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02f519e67b
libxml2/parser.c
Mike Dalessio bbbbbb4649 parser: implement xmlCtxtGetOptions 
In 712a31ab, the `options` struct member was deprecated. To allow
callers to check the status of options bits, introduce
xmlCtxtGetOptions.
2024-06-20 20:39:54 +00:00

14104 lines
382 KiB
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/*
* parser.c : an XML 1.0 parser, namespaces and validity support are mostly
* implemented on top of the SAX interfaces
*
* References:
* The XML specification:
* http://www.w3.org/TR/REC-xml
* Original 1.0 version:
* http://www.w3.org/TR/1998/REC-xml-19980210
* XML second edition working draft
* http://www.w3.org/TR/2000/WD-xml-2e-20000814
*
* Okay this is a big file, the parser core is around 7000 lines, then it
* is followed by the progressive parser top routines, then the various
* high level APIs to call the parser and a few miscellaneous functions.
* A number of helper functions and deprecated ones have been moved to
* parserInternals.c to reduce this file size.
* As much as possible the functions are associated with their relative
* production in the XML specification. A few productions defining the
* different ranges of character are actually implanted either in
* parserInternals.h or parserInternals.c
* The DOM tree build is realized from the default SAX callbacks in
* the module SAX2.c.
* The routines doing the validation checks are in valid.c and called either
* from the SAX callbacks or as standalone functions using a preparsed
* document.
*
* See Copyright for the status of this software.
*
* daniel@veillard.com
*/
/* To avoid EBCDIC trouble when parsing on zOS */
#if defined(__MVS__)
#pragma convert("ISO8859-1")
#endif
#define IN_LIBXML
#include "libxml.h"
#if defined(_WIN32)
#define XML_DIR_SEP '\\'
#else
#define XML_DIR_SEP '/'
#endif
#include <stdlib.h>
#include <limits.h>
#include <string.h>
#include <stdarg.h>
#include <stddef.h>
#include <ctype.h>
#include <stdlib.h>
#include <libxml/parser.h>
#include <libxml/xmlmemory.h>
#include <libxml/tree.h>
#include <libxml/parserInternals.h>
#include <libxml/valid.h>
#include <libxml/entities.h>
#include <libxml/xmlerror.h>
#include <libxml/encoding.h>
#include <libxml/xmlIO.h>
#include <libxml/uri.h>
#include <libxml/SAX2.h>
#ifdef LIBXML_CATALOG_ENABLED
#include <libxml/catalog.h>
#endif
#include "private/buf.h"
#include "private/dict.h"
#include "private/entities.h"
#include "private/error.h"
#include "private/html.h"
#include "private/io.h"
#include "private/parser.h"
#define NS_INDEX_EMPTY INT_MAX
#define NS_INDEX_XML (INT_MAX - 1)
#define URI_HASH_EMPTY 0xD943A04E
#define URI_HASH_XML 0xF0451F02
#ifndef STDIN_FILENO
#define STDIN_FILENO 0
#endif
struct _xmlStartTag {
const xmlChar *prefix;
const xmlChar *URI;
int line;
int nsNr;
};
typedef struct {
void *saxData;
unsigned prefixHashValue;
unsigned uriHashValue;
unsigned elementId;
int oldIndex;
} xmlParserNsExtra;
typedef struct {
unsigned hashValue;
int index;
} xmlParserNsBucket;
struct _xmlParserNsData {
xmlParserNsExtra *extra;
unsigned hashSize;
unsigned hashElems;
xmlParserNsBucket *hash;
unsigned elementId;
int defaultNsIndex;
int minNsIndex;
};
struct _xmlAttrHashBucket {
int index;
};
static int
xmlParseElementStart(xmlParserCtxtPtr ctxt);
static void
xmlParseElementEnd(xmlParserCtxtPtr ctxt);
static xmlEntityPtr
xmlLookupGeneralEntity(xmlParserCtxtPtr ctxt, const xmlChar *name, int inAttr);
static const xmlChar *
xmlParseEntityRefInternal(xmlParserCtxtPtr ctxt);
/************************************************************************
* *
* Arbitrary limits set in the parser. See XML_PARSE_HUGE *
* *
************************************************************************/
#define XML_PARSER_BIG_ENTITY 1000
#define XML_PARSER_LOT_ENTITY 5000
/*
* Constants for protection against abusive entity expansion
* ("billion laughs").
*/
/*
* A certain amount of entity expansion which is always allowed.
*/
#define XML_PARSER_ALLOWED_EXPANSION 1000000
/*
* Fixed cost for each entity reference. This crudely models processing time
* as well to protect, for example, against exponential expansion of empty
* or very short entities.
*/
#define XML_ENT_FIXED_COST 20
/**
* xmlParserMaxDepth:
*
* arbitrary depth limit for the XML documents that we allow to
* process. This is not a limitation of the parser but a safety
* boundary feature. It can be disabled with the XML_PARSE_HUGE
* parser option.
*/
const unsigned int xmlParserMaxDepth = 256;
#define XML_PARSER_BIG_BUFFER_SIZE 300
#define XML_PARSER_BUFFER_SIZE 100
#define SAX_COMPAT_MODE BAD_CAST "SAX compatibility mode document"
/**
* XML_PARSER_CHUNK_SIZE
*
* When calling GROW that's the minimal amount of data
* the parser expected to have received. It is not a hard
* limit but an optimization when reading strings like Names
* It is not strictly needed as long as inputs available characters
* are followed by 0, which should be provided by the I/O level
*/
#define XML_PARSER_CHUNK_SIZE 100
/**
* xmlParserVersion:
*
* Constant string describing the internal version of the library
*/
const char *const
xmlParserVersion = LIBXML_VERSION_STRING LIBXML_VERSION_EXTRA;
/*
* List of XML prefixed PI allowed by W3C specs
*/
static const char* const xmlW3CPIs[] = {
"xml-stylesheet",
"xml-model",
NULL
};
/* DEPR void xmlParserHandleReference(xmlParserCtxtPtr ctxt); */
static xmlEntityPtr xmlParseStringPEReference(xmlParserCtxtPtr ctxt,
const xmlChar **str);
static void
xmlCtxtParseEntity(xmlParserCtxtPtr ctxt, xmlEntityPtr ent);
static int
xmlLoadEntityContent(xmlParserCtxtPtr ctxt, xmlEntityPtr entity);
/************************************************************************
* *
* Some factorized error routines *
* *
************************************************************************/
static void
xmlErrMemory(xmlParserCtxtPtr ctxt) {
xmlCtxtErrMemory(ctxt);
}
/**
* xmlErrAttributeDup:
* @ctxt: an XML parser context
* @prefix: the attribute prefix
* @localname: the attribute localname
*
* Handle a redefinition of attribute error
*/
static void
xmlErrAttributeDup(xmlParserCtxtPtr ctxt, const xmlChar * prefix,
const xmlChar * localname)
{
if (prefix == NULL)
xmlCtxtErr(ctxt, NULL, XML_FROM_PARSER, XML_ERR_ATTRIBUTE_REDEFINED,
XML_ERR_FATAL, localname, NULL, NULL, 0,
"Attribute %s redefined\n", localname);
else
xmlCtxtErr(ctxt, NULL, XML_FROM_PARSER, XML_ERR_ATTRIBUTE_REDEFINED,
XML_ERR_FATAL, prefix, localname, NULL, 0,
"Attribute %s:%s redefined\n", prefix, localname);
}
/**
* xmlFatalErrMsg:
* @ctxt: an XML parser context
* @error: the error number
* @msg: the error message
*
* Handle a fatal parser error, i.e. violating Well-Formedness constraints
*/
static void LIBXML_ATTR_FORMAT(3,0)
xmlFatalErrMsg(xmlParserCtxtPtr ctxt, xmlParserErrors error,
const char *msg)
{
xmlCtxtErr(ctxt, NULL, XML_FROM_PARSER, error, XML_ERR_FATAL,
NULL, NULL, NULL, 0, "%s", msg);
}
/**
* xmlWarningMsg:
* @ctxt: an XML parser context
* @error: the error number
* @msg: the error message
* @str1: extra data
* @str2: extra data
*
* Handle a warning.
*/
void LIBXML_ATTR_FORMAT(3,0)
xmlWarningMsg(xmlParserCtxtPtr ctxt, xmlParserErrors error,
const char *msg, const xmlChar *str1, const xmlChar *str2)
{
xmlCtxtErr(ctxt, NULL, XML_FROM_PARSER, error, XML_ERR_WARNING,
str1, str2, NULL, 0, msg, str1, str2);
}
/**
* xmlValidityError:
* @ctxt: an XML parser context
* @error: the error number
* @msg: the error message
* @str1: extra data
*
* Handle a validity error.
*/
static void LIBXML_ATTR_FORMAT(3,0)
xmlValidityError(xmlParserCtxtPtr ctxt, xmlParserErrors error,
const char *msg, const xmlChar *str1, const xmlChar *str2)
{
ctxt->valid = 0;
xmlCtxtErr(ctxt, NULL, XML_FROM_DTD, error, XML_ERR_ERROR,
str1, str2, NULL, 0, msg, str1, str2);
}
/**
* xmlFatalErrMsgInt:
* @ctxt: an XML parser context
* @error: the error number
* @msg: the error message
* @val: an integer value
*
* Handle a fatal parser error, i.e. violating Well-Formedness constraints
*/
static void LIBXML_ATTR_FORMAT(3,0)
xmlFatalErrMsgInt(xmlParserCtxtPtr ctxt, xmlParserErrors error,
const char *msg, int val)
{
xmlCtxtErr(ctxt, NULL, XML_FROM_PARSER, error, XML_ERR_FATAL,
NULL, NULL, NULL, val, msg, val);
}
/**
* xmlFatalErrMsgStrIntStr:
* @ctxt: an XML parser context
* @error: the error number
* @msg: the error message
* @str1: an string info
* @val: an integer value
* @str2: an string info
*
* Handle a fatal parser error, i.e. violating Well-Formedness constraints
*/
static void LIBXML_ATTR_FORMAT(3,0)
xmlFatalErrMsgStrIntStr(xmlParserCtxtPtr ctxt, xmlParserErrors error,
const char *msg, const xmlChar *str1, int val,
const xmlChar *str2)
{
xmlCtxtErr(ctxt, NULL, XML_FROM_PARSER, error, XML_ERR_FATAL,
str1, str2, NULL, val, msg, str1, val, str2);
}
/**
* xmlFatalErrMsgStr:
* @ctxt: an XML parser context
* @error: the error number
* @msg: the error message
* @val: a string value
*
* Handle a fatal parser error, i.e. violating Well-Formedness constraints
*/
static void LIBXML_ATTR_FORMAT(3,0)
xmlFatalErrMsgStr(xmlParserCtxtPtr ctxt, xmlParserErrors error,
const char *msg, const xmlChar * val)
{
xmlCtxtErr(ctxt, NULL, XML_FROM_PARSER, error, XML_ERR_FATAL,
val, NULL, NULL, 0, msg, val);
}
/**
* xmlErrMsgStr:
* @ctxt: an XML parser context
* @error: the error number
* @msg: the error message
* @val: a string value
*
* Handle a non fatal parser error
*/
static void LIBXML_ATTR_FORMAT(3,0)
xmlErrMsgStr(xmlParserCtxtPtr ctxt, xmlParserErrors error,
const char *msg, const xmlChar * val)
{
xmlCtxtErr(ctxt, NULL, XML_FROM_PARSER, error, XML_ERR_ERROR,
val, NULL, NULL, 0, msg, val);
}
/**
* xmlNsErr:
* @ctxt: an XML parser context
* @error: the error number
* @msg: the message
* @info1: extra information string
* @info2: extra information string
*
* Handle a fatal parser error, i.e. violating Well-Formedness constraints
*/
static void LIBXML_ATTR_FORMAT(3,0)
xmlNsErr(xmlParserCtxtPtr ctxt, xmlParserErrors error,
const char *msg,
const xmlChar * info1, const xmlChar * info2,
const xmlChar * info3)
{
ctxt->nsWellFormed = 0;
xmlCtxtErr(ctxt, NULL, XML_FROM_NAMESPACE, error, XML_ERR_ERROR,
info1, info2, info3, 0, msg, info1, info2, info3);
}
/**
* xmlNsWarn
* @ctxt: an XML parser context
* @error: the error number
* @msg: the message
* @info1: extra information string
* @info2: extra information string
*
* Handle a namespace warning error
*/
static void LIBXML_ATTR_FORMAT(3,0)
xmlNsWarn(xmlParserCtxtPtr ctxt, xmlParserErrors error,
const char *msg,
const xmlChar * info1, const xmlChar * info2,
const xmlChar * info3)
{
xmlCtxtErr(ctxt, NULL, XML_FROM_NAMESPACE, error, XML_ERR_WARNING,
info1, info2, info3, 0, msg, info1, info2, info3);
}
static void
xmlSaturatedAdd(unsigned long *dst, unsigned long val) {
if (val > ULONG_MAX - *dst)
*dst = ULONG_MAX;
else
*dst += val;
}
static void
xmlSaturatedAddSizeT(unsigned long *dst, unsigned long val) {
if (val > ULONG_MAX - *dst)
*dst = ULONG_MAX;
else
*dst += val;
}
/**
* xmlParserEntityCheck:
* @ctxt: parser context
* @extra: sum of unexpanded entity sizes
*
* Check for non-linear entity expansion behaviour.
*
* In some cases like xmlExpandEntityInAttValue, this function is called
* for each, possibly nested entity and its unexpanded content length.
*
* In other cases like xmlParseReference, it's only called for each
* top-level entity with its unexpanded content length plus the sum of
* the unexpanded content lengths (plus fixed cost) of all nested
* entities.
*
* Summing the unexpanded lengths also adds the length of the reference.
* This is by design. Taking the length of the entity name into account
* discourages attacks that try to waste CPU time with abusively long
* entity names. See test/recurse/lol6.xml for example. Each call also
* adds some fixed cost XML_ENT_FIXED_COST to discourage attacks with
* short entities.
*
* Returns 1 on error, 0 on success.
*/
static int
xmlParserEntityCheck(xmlParserCtxtPtr ctxt, unsigned long extra)
{
unsigned long consumed;
unsigned long *expandedSize;
xmlParserInputPtr input = ctxt->input;
xmlEntityPtr entity = input->entity;
if ((entity) && (entity->flags & XML_ENT_CHECKED))
return(0);
/*
* Compute total consumed bytes so far, including input streams of
* external entities.
*/
consumed = input->consumed;
xmlSaturatedAddSizeT(&consumed, input->cur - input->base);
xmlSaturatedAdd(&consumed, ctxt->sizeentities);
if (entity)
expandedSize = &entity->expandedSize;
else
expandedSize = &ctxt->sizeentcopy;
/*
* Add extra cost and some fixed cost.
*/
xmlSaturatedAdd(expandedSize, extra);
xmlSaturatedAdd(expandedSize, XML_ENT_FIXED_COST);
/*
* It's important to always use saturation arithmetic when tracking
* entity sizes to make the size checks reliable. If "sizeentcopy"
* overflows, we have to abort.
*/
if ((*expandedSize > XML_PARSER_ALLOWED_EXPANSION) &&
((*expandedSize >= ULONG_MAX) ||
(*expandedSize / ctxt->maxAmpl > consumed))) {
xmlFatalErrMsg(ctxt, XML_ERR_RESOURCE_LIMIT,
"Maximum entity amplification factor exceeded, see "
"xmlCtxtSetMaxAmplification.\n");
xmlHaltParser(ctxt);
return(1);
}
return(0);
}
/************************************************************************
* *
* Library wide options *
* *
************************************************************************/
/**
* xmlHasFeature:
* @feature: the feature to be examined
*
* Examines if the library has been compiled with a given feature.
*
* Returns a non-zero value if the feature exist, otherwise zero.
* Returns zero (0) if the feature does not exist or an unknown
* unknown feature is requested, non-zero otherwise.
*/
int
xmlHasFeature(xmlFeature feature)
{
switch (feature) {
case XML_WITH_THREAD:
#ifdef LIBXML_THREAD_ENABLED
return(1);
#else
return(0);
#endif
case XML_WITH_TREE:
return(1);
case XML_WITH_OUTPUT:
#ifdef LIBXML_OUTPUT_ENABLED
return(1);
#else
return(0);
#endif
case XML_WITH_PUSH:
#ifdef LIBXML_PUSH_ENABLED
return(1);
#else
return(0);
#endif
case XML_WITH_READER:
#ifdef LIBXML_READER_ENABLED
return(1);
#else
return(0);
#endif
case XML_WITH_PATTERN:
#ifdef LIBXML_PATTERN_ENABLED
return(1);
#else
return(0);
#endif
case XML_WITH_WRITER:
#ifdef LIBXML_WRITER_ENABLED
return(1);
#else
return(0);
#endif
case XML_WITH_SAX1:
#ifdef LIBXML_SAX1_ENABLED
return(1);
#else
return(0);
#endif
case XML_WITH_HTTP:
#ifdef LIBXML_HTTP_ENABLED
return(1);
#else
return(0);
#endif
case XML_WITH_VALID:
#ifdef LIBXML_VALID_ENABLED
return(1);
#else
return(0);
#endif
case XML_WITH_HTML:
#ifdef LIBXML_HTML_ENABLED
return(1);
#else
return(0);
#endif
case XML_WITH_LEGACY:
#ifdef LIBXML_LEGACY_ENABLED
return(1);
#else
return(0);
#endif
case XML_WITH_C14N:
#ifdef LIBXML_C14N_ENABLED
return(1);
#else
return(0);
#endif
case XML_WITH_CATALOG:
#ifdef LIBXML_CATALOG_ENABLED
return(1);
#else
return(0);
#endif
case XML_WITH_XPATH:
#ifdef LIBXML_XPATH_ENABLED
return(1);
#else
return(0);
#endif
case XML_WITH_XPTR:
#ifdef LIBXML_XPTR_ENABLED
return(1);
#else
return(0);
#endif
case XML_WITH_XINCLUDE:
#ifdef LIBXML_XINCLUDE_ENABLED
return(1);
#else
return(0);
#endif
case XML_WITH_ICONV:
#ifdef LIBXML_ICONV_ENABLED
return(1);
#else
return(0);
#endif
case XML_WITH_ISO8859X:
#ifdef LIBXML_ISO8859X_ENABLED
return(1);
#else
return(0);
#endif
case XML_WITH_UNICODE:
#ifdef LIBXML_UNICODE_ENABLED
return(1);
#else
return(0);
#endif
case XML_WITH_REGEXP:
#ifdef LIBXML_REGEXP_ENABLED
return(1);
#else
return(0);
#endif
case XML_WITH_AUTOMATA:
#ifdef LIBXML_REGEXP_ENABLED
return(1);
#else
return(0);
#endif
case XML_WITH_EXPR:
#ifdef LIBXML_EXPR_ENABLED
return(1);
#else
return(0);
#endif
case XML_WITH_SCHEMAS:
#ifdef LIBXML_SCHEMAS_ENABLED
return(1);
#else
return(0);
#endif
case XML_WITH_SCHEMATRON:
#ifdef LIBXML_SCHEMATRON_ENABLED
return(1);
#else
return(0);
#endif
case XML_WITH_MODULES:
#ifdef LIBXML_MODULES_ENABLED
return(1);
#else
return(0);
#endif
case XML_WITH_DEBUG:
#ifdef LIBXML_DEBUG_ENABLED
return(1);
#else
return(0);
#endif
case XML_WITH_DEBUG_MEM:
return(0);
case XML_WITH_ZLIB:
#ifdef LIBXML_ZLIB_ENABLED
return(1);
#else
return(0);
#endif
case XML_WITH_LZMA:
#ifdef LIBXML_LZMA_ENABLED
return(1);
#else
return(0);
#endif
case XML_WITH_ICU:
#ifdef LIBXML_ICU_ENABLED
return(1);
#else
return(0);
#endif
default:
break;
}
return(0);
}
/************************************************************************
* *
* Simple string buffer *
* *
************************************************************************/
typedef struct {
xmlChar *mem;
unsigned size;
unsigned cap; /* size < cap */
unsigned max; /* size <= max */
xmlParserErrors code;
} xmlSBuf;
static void
xmlSBufInit(xmlSBuf *buf, unsigned max) {
buf->mem = NULL;
buf->size = 0;
buf->cap = 0;
buf->max = max;
buf->code = XML_ERR_OK;
}
static int
xmlSBufGrow(xmlSBuf *buf, unsigned len) {
xmlChar *mem;
unsigned cap;
if (len >= UINT_MAX / 2 - buf->size) {
if (buf->code == XML_ERR_OK)
buf->code = XML_ERR_RESOURCE_LIMIT;
return(-1);
}
cap = (buf->size + len) * 2;
if (cap < 240)
cap = 240;
mem = xmlRealloc(buf->mem, cap);
if (mem == NULL) {
buf->code = XML_ERR_NO_MEMORY;
return(-1);
}
buf->mem = mem;
buf->cap = cap;
return(0);
}
static void
xmlSBufAddString(xmlSBuf *buf, const xmlChar *str, unsigned len) {
if (buf->max - buf->size < len) {
if (buf->code == XML_ERR_OK)
buf->code = XML_ERR_RESOURCE_LIMIT;
return;
}
if (buf->cap - buf->size <= len) {
if (xmlSBufGrow(buf, len) < 0)
return;
}
if (len > 0)
memcpy(buf->mem + buf->size, str, len);
buf->size += len;
}
static void
xmlSBufAddCString(xmlSBuf *buf, const char *str, unsigned len) {
xmlSBufAddString(buf, (const xmlChar *) str, len);
}
static void
xmlSBufAddChar(xmlSBuf *buf, int c) {
xmlChar *end;
if (buf->max - buf->size < 4) {
if (buf->code == XML_ERR_OK)
buf->code = XML_ERR_RESOURCE_LIMIT;
return;
}
if (buf->cap - buf->size <= 4) {
if (xmlSBufGrow(buf, 4) < 0)
return;
}
end = buf->mem + buf->size;
if (c < 0x80) {
*end = (xmlChar) c;
buf->size += 1;
} else {
buf->size += xmlCopyCharMultiByte(end, c);
}
}
static void
xmlSBufAddReplChar(xmlSBuf *buf) {
xmlSBufAddCString(buf, "\xEF\xBF\xBD", 3);
}
static void
xmlSBufReportError(xmlSBuf *buf, xmlParserCtxtPtr ctxt, const char *errMsg) {
if (buf->code == XML_ERR_NO_MEMORY)
xmlCtxtErrMemory(ctxt);
else
xmlFatalErr(ctxt, buf->code, errMsg);
}
static xmlChar *
xmlSBufFinish(xmlSBuf *buf, int *sizeOut, xmlParserCtxtPtr ctxt,
const char *errMsg) {
if (buf->mem == NULL) {
buf->mem = xmlMalloc(1);
if (buf->mem == NULL) {
buf->code = XML_ERR_NO_MEMORY;
} else {
buf->mem[0] = 0;
}
} else {
buf->mem[buf->size] = 0;
}
if (buf->code == XML_ERR_OK) {
if (sizeOut != NULL)
*sizeOut = buf->size;
return(buf->mem);
}
xmlSBufReportError(buf, ctxt, errMsg);
xmlFree(buf->mem);
if (sizeOut != NULL)
*sizeOut = 0;
return(NULL);
}
static void
xmlSBufCleanup(xmlSBuf *buf, xmlParserCtxtPtr ctxt, const char *errMsg) {
if (buf->code != XML_ERR_OK)
xmlSBufReportError(buf, ctxt, errMsg);
xmlFree(buf->mem);
}
static int
xmlUTF8MultibyteLen(xmlParserCtxtPtr ctxt, const xmlChar *str,
const char *errMsg) {
int c = str[0];
int c1 = str[1];
if ((c1 & 0xC0) != 0x80)
goto encoding_error;
if (c < 0xE0) {
/* 2-byte sequence */
if (c < 0xC2)
goto encoding_error;
return(2);
} else {
int c2 = str[2];
if ((c2 & 0xC0) != 0x80)
goto encoding_error;
if (c < 0xF0) {
/* 3-byte sequence */
if (c == 0xE0) {
/* overlong */
if (c1 < 0xA0)
goto encoding_error;
} else if (c == 0xED) {
/* surrogate */
if (c1 >= 0xA0)
goto encoding_error;
} else if (c == 0xEF) {
/* U+FFFE and U+FFFF are invalid Chars */
if ((c1 == 0xBF) && (c2 >= 0xBE))
xmlFatalErrMsg(ctxt, XML_ERR_INVALID_CHAR, errMsg);
}
return(3);
} else {
/* 4-byte sequence */
if ((str[3] & 0xC0) != 0x80)
goto encoding_error;
if (c == 0xF0) {
/* overlong */
if (c1 < 0x90)
goto encoding_error;
} else if (c >= 0xF4) {
/* greater than 0x10FFFF */
if ((c > 0xF4) || (c1 >= 0x90))
goto encoding_error;
}
return(4);
}
}
encoding_error:
/* Only report the first error */
if ((ctxt->input->flags & XML_INPUT_ENCODING_ERROR) == 0) {
xmlCtxtErrIO(ctxt, XML_ERR_INVALID_ENCODING, NULL);
ctxt->input->flags |= XML_INPUT_ENCODING_ERROR;
}
return(0);
}
/************************************************************************
* *
* SAX2 defaulted attributes handling *
* *
************************************************************************/
/**
* xmlCtxtInitializeLate:
* @ctxt: an XML parser context
*
* Final initialization of the parser context before starting to parse.
*
* This accounts for users modifying struct members of parser context
* directly.
*/
static void
xmlCtxtInitializeLate(xmlParserCtxtPtr ctxt) {
xmlSAXHandlerPtr sax;
/* Avoid unused variable warning if features are disabled. */
(void) sax;
/*
* Changing the SAX struct directly is still widespread practice
* in internal and external code.
*/
if (ctxt == NULL) return;
sax = ctxt->sax;
#ifdef LIBXML_SAX1_ENABLED
/*
* Only enable SAX2 if there SAX2 element handlers, except when there
* are no element handlers at all.
*/
if (((ctxt->options & XML_PARSE_SAX1) == 0) &&
(sax) &&
(sax->initialized == XML_SAX2_MAGIC) &&
((sax->startElementNs != NULL) ||
(sax->endElementNs != NULL) ||
((sax->startElement == NULL) && (sax->endElement == NULL))))
ctxt->sax2 = 1;
#else
ctxt->sax2 = 1;
#endif /* LIBXML_SAX1_ENABLED */
/*
* Some users replace the dictionary directly in the context struct.
* We really need an API function to do that cleanly.
*/
ctxt->str_xml = xmlDictLookup(ctxt->dict, BAD_CAST "xml", 3);
ctxt->str_xmlns = xmlDictLookup(ctxt->dict, BAD_CAST "xmlns", 5);
ctxt->str_xml_ns = xmlDictLookup(ctxt->dict, XML_XML_NAMESPACE, 36);
if ((ctxt->str_xml==NULL) || (ctxt->str_xmlns==NULL) ||
(ctxt->str_xml_ns == NULL)) {
xmlErrMemory(ctxt);
}
}
typedef struct {
xmlHashedString prefix;
xmlHashedString name;
xmlHashedString value;
const xmlChar *valueEnd;
int external;
int expandedSize;
} xmlDefAttr;
typedef struct _xmlDefAttrs xmlDefAttrs;
typedef xmlDefAttrs *xmlDefAttrsPtr;
struct _xmlDefAttrs {
int nbAttrs; /* number of defaulted attributes on that element */
int maxAttrs; /* the size of the array */
#if __STDC_VERSION__ >= 199901L
/* Using a C99 flexible array member avoids UBSan errors. */
xmlDefAttr attrs[]; /* array of localname/prefix/values/external */
#else
xmlDefAttr attrs[1];
#endif
};
/**
* xmlAttrNormalizeSpace:
* @src: the source string
* @dst: the target string
*
* Normalize the space in non CDATA attribute values:
* If the attribute type is not CDATA, then the XML processor MUST further
* process the normalized attribute value by discarding any leading and
* trailing space (#x20) characters, and by replacing sequences of space
* (#x20) characters by a single space (#x20) character.
* Note that the size of dst need to be at least src, and if one doesn't need
* to preserve dst (and it doesn't come from a dictionary or read-only) then
* passing src as dst is just fine.
*
* Returns a pointer to the normalized value (dst) or NULL if no conversion
* is needed.
*/
static xmlChar *
xmlAttrNormalizeSpace(const xmlChar *src, xmlChar *dst)
{
if ((src == NULL) || (dst == NULL))
return(NULL);
while (*src == 0x20) src++;
while (*src != 0) {
if (*src == 0x20) {
while (*src == 0x20) src++;
if (*src != 0)
*dst++ = 0x20;
} else {
*dst++ = *src++;
}
}
*dst = 0;
if (dst == src)
return(NULL);
return(dst);
}
/**
* xmlAddDefAttrs:
* @ctxt: an XML parser context
* @fullname: the element fullname
* @fullattr: the attribute fullname
* @value: the attribute value
*
* Add a defaulted attribute for an element
*/
static void
xmlAddDefAttrs(xmlParserCtxtPtr ctxt,
const xmlChar *fullname,
const xmlChar *fullattr,
const xmlChar *value) {
xmlDefAttrsPtr defaults;
xmlDefAttr *attr;
int len, expandedSize;
xmlHashedString name;
xmlHashedString prefix;
xmlHashedString hvalue;
const xmlChar *localname;
/*
* Allows to detect attribute redefinitions
*/
if (ctxt->attsSpecial != NULL) {
if (xmlHashLookup2(ctxt->attsSpecial, fullname, fullattr) != NULL)
return;
}
if (ctxt->attsDefault == NULL) {
ctxt->attsDefault = xmlHashCreateDict(10, ctxt->dict);
if (ctxt->attsDefault == NULL)
goto mem_error;
}
/*
* split the element name into prefix:localname , the string found
* are within the DTD and then not associated to namespace names.
*/
localname = xmlSplitQName3(fullname, &len);
if (localname == NULL) {
name = xmlDictLookupHashed(ctxt->dict, fullname, -1);
prefix.name = NULL;
} else {
name = xmlDictLookupHashed(ctxt->dict, localname, -1);
prefix = xmlDictLookupHashed(ctxt->dict, fullname, len);
if (prefix.name == NULL)
goto mem_error;
}
if (name.name == NULL)
goto mem_error;
/*
* make sure there is some storage
*/
defaults = xmlHashLookup2(ctxt->attsDefault, name.name, prefix.name);
if ((defaults == NULL) ||
(defaults->nbAttrs >= defaults->maxAttrs)) {
xmlDefAttrsPtr temp;
int newSize;
newSize = (defaults != NULL) ? 2 * defaults->maxAttrs : 4;
temp = xmlRealloc(defaults,
sizeof(*defaults) + newSize * sizeof(xmlDefAttr));
if (temp == NULL)
goto mem_error;
if (defaults == NULL)
temp->nbAttrs = 0;
temp->maxAttrs = newSize;
defaults = temp;
if (xmlHashUpdateEntry2(ctxt->attsDefault, name.name, prefix.name,
defaults, NULL) < 0) {
xmlFree(defaults);
goto mem_error;
}
}
/*
* Split the attribute name into prefix:localname , the string found
* are within the DTD and hen not associated to namespace names.
*/
localname = xmlSplitQName3(fullattr, &len);
if (localname == NULL) {
name = xmlDictLookupHashed(ctxt->dict, fullattr, -1);
prefix.name = NULL;
} else {
name = xmlDictLookupHashed(ctxt->dict, localname, -1);
prefix = xmlDictLookupHashed(ctxt->dict, fullattr, len);
if (prefix.name == NULL)
goto mem_error;
}
if (name.name == NULL)
goto mem_error;
/* intern the string and precompute the end */
len = strlen((const char *) value);
hvalue = xmlDictLookupHashed(ctxt->dict, value, len);
if (hvalue.name == NULL)
goto mem_error;
expandedSize = strlen((const char *) name.name);
if (prefix.name != NULL)
expandedSize += strlen((const char *) prefix.name);
expandedSize += len;
attr = &defaults->attrs[defaults->nbAttrs++];
attr->name = name;
attr->prefix = prefix;
attr->value = hvalue;
attr->valueEnd = hvalue.name + len;
attr->external = PARSER_EXTERNAL(ctxt);
attr->expandedSize = expandedSize;
return;
mem_error:
xmlErrMemory(ctxt);
}
/**
* xmlAddSpecialAttr:
* @ctxt: an XML parser context
* @fullname: the element fullname
* @fullattr: the attribute fullname
* @type: the attribute type
*
* Register this attribute type
*/
static void
xmlAddSpecialAttr(xmlParserCtxtPtr ctxt,
const xmlChar *fullname,
const xmlChar *fullattr,
int type)
{
if (ctxt->attsSpecial == NULL) {
ctxt->attsSpecial = xmlHashCreateDict(10, ctxt->dict);
if (ctxt->attsSpecial == NULL)
goto mem_error;
}
if (xmlHashAdd2(ctxt->attsSpecial, fullname, fullattr,
(void *) (ptrdiff_t) type) < 0)
goto mem_error;
return;
mem_error:
xmlErrMemory(ctxt);
}
/**
* xmlCleanSpecialAttrCallback:
*
* Removes CDATA attributes from the special attribute table
*/
static void
xmlCleanSpecialAttrCallback(void *payload, void *data,
const xmlChar *fullname, const xmlChar *fullattr,
const xmlChar *unused ATTRIBUTE_UNUSED) {
xmlParserCtxtPtr ctxt = (xmlParserCtxtPtr) data;
if (((ptrdiff_t) payload) == XML_ATTRIBUTE_CDATA) {
xmlHashRemoveEntry2(ctxt->attsSpecial, fullname, fullattr, NULL);
}
}
/**
* xmlCleanSpecialAttr:
* @ctxt: an XML parser context
*
* Trim the list of attributes defined to remove all those of type
* CDATA as they are not special. This call should be done when finishing
* to parse the DTD and before starting to parse the document root.
*/
static void
xmlCleanSpecialAttr(xmlParserCtxtPtr ctxt)
{
if (ctxt->attsSpecial == NULL)
return;
xmlHashScanFull(ctxt->attsSpecial, xmlCleanSpecialAttrCallback, ctxt);
if (xmlHashSize(ctxt->attsSpecial) == 0) {
xmlHashFree(ctxt->attsSpecial, NULL);
ctxt->attsSpecial = NULL;
}
}
/**
* xmlCheckLanguageID:
* @lang: pointer to the string value
*
* DEPRECATED: Internal function, do not use.
*
* Checks that the value conforms to the LanguageID production:
*
* NOTE: this is somewhat deprecated, those productions were removed from
* the XML Second edition.
*
* [33] LanguageID ::= Langcode ('-' Subcode)*
* [34] Langcode ::= ISO639Code | IanaCode | UserCode
* [35] ISO639Code ::= ([a-z] | [A-Z]) ([a-z] | [A-Z])
* [36] IanaCode ::= ('i' | 'I') '-' ([a-z] | [A-Z])+
* [37] UserCode ::= ('x' | 'X') '-' ([a-z] | [A-Z])+
* [38] Subcode ::= ([a-z] | [A-Z])+
*
* The current REC reference the successors of RFC 1766, currently 5646
*
* http://www.rfc-editor.org/rfc/rfc5646.txt
* langtag = language
* ["-" script]
* ["-" region]
* *("-" variant)
* *("-" extension)
* ["-" privateuse]
* language = 2*3ALPHA ; shortest ISO 639 code
* ["-" extlang] ; sometimes followed by
* ; extended language subtags
* / 4ALPHA ; or reserved for future use
* / 5*8ALPHA ; or registered language subtag
*
* extlang = 3ALPHA ; selected ISO 639 codes
* *2("-" 3ALPHA) ; permanently reserved
*
* script = 4ALPHA ; ISO 15924 code
*
* region = 2ALPHA ; ISO 3166-1 code
* / 3DIGIT ; UN M.49 code
*
* variant = 5*8alphanum ; registered variants
* / (DIGIT 3alphanum)
*
* extension = singleton 1*("-" (2*8alphanum))
*
* ; Single alphanumerics
* ; "x" reserved for private use
* singleton = DIGIT ; 0 - 9
* / %x41-57 ; A - W
* / %x59-5A ; Y - Z
* / %x61-77 ; a - w
* / %x79-7A ; y - z
*
* it sounds right to still allow Irregular i-xxx IANA and user codes too
* The parser below doesn't try to cope with extension or privateuse
* that could be added but that's not interoperable anyway
*
* Returns 1 if correct 0 otherwise
**/
int
xmlCheckLanguageID(const xmlChar * lang)
{
const xmlChar *cur = lang, *nxt;
if (cur == NULL)
return (0);
if (((cur[0] == 'i') && (cur[1] == '-')) ||
((cur[0] == 'I') && (cur[1] == '-')) ||
((cur[0] == 'x') && (cur[1] == '-')) ||
((cur[0] == 'X') && (cur[1] == '-'))) {
/*
* Still allow IANA code and user code which were coming
* from the previous version of the XML-1.0 specification
* it's deprecated but we should not fail
*/
cur += 2;
while (((cur[0] >= 'A') && (cur[0] <= 'Z')) ||
((cur[0] >= 'a') && (cur[0] <= 'z')))
cur++;
return(cur[0] == 0);
}
nxt = cur;
while (((nxt[0] >= 'A') && (nxt[0] <= 'Z')) ||
((nxt[0] >= 'a') && (nxt[0] <= 'z')))
nxt++;
if (nxt - cur >= 4) {
/*
* Reserved
*/
if ((nxt - cur > 8) || (nxt[0] != 0))
return(0);
return(1);
}
if (nxt - cur < 2)
return(0);
/* we got an ISO 639 code */
if (nxt[0] == 0)
return(1);
if (nxt[0] != '-')
return(0);
nxt++;
cur = nxt;
/* now we can have extlang or script or region or variant */
if ((nxt[0] >= '0') && (nxt[0] <= '9'))
goto region_m49;
while (((nxt[0] >= 'A') && (nxt[0] <= 'Z')) ||
((nxt[0] >= 'a') && (nxt[0] <= 'z')))
nxt++;
if (nxt - cur == 4)
goto script;
if (nxt - cur == 2)
goto region;
if ((nxt - cur >= 5) && (nxt - cur <= 8))
goto variant;
if (nxt - cur != 3)
return(0);
/* we parsed an extlang */
if (nxt[0] == 0)
return(1);
if (nxt[0] != '-')
return(0);
nxt++;
cur = nxt;
/* now we can have script or region or variant */
if ((nxt[0] >= '0') && (nxt[0] <= '9'))
goto region_m49;
while (((nxt[0] >= 'A') && (nxt[0] <= 'Z')) ||
((nxt[0] >= 'a') && (nxt[0] <= 'z')))
nxt++;
if (nxt - cur == 2)
goto region;
if ((nxt - cur >= 5) && (nxt - cur <= 8))
goto variant;
if (nxt - cur != 4)
return(0);
/* we parsed a script */
script:
if (nxt[0] == 0)
return(1);
if (nxt[0] != '-')
return(0);
nxt++;
cur = nxt;
/* now we can have region or variant */
if ((nxt[0] >= '0') && (nxt[0] <= '9'))
goto region_m49;
while (((nxt[0] >= 'A') && (nxt[0] <= 'Z')) ||
((nxt[0] >= 'a') && (nxt[0] <= 'z')))
nxt++;
if ((nxt - cur >= 5) && (nxt - cur <= 8))
goto variant;
if (nxt - cur != 2)
return(0);
/* we parsed a region */
region:
if (nxt[0] == 0)
return(1);
if (nxt[0] != '-')
return(0);
nxt++;
cur = nxt;
/* now we can just have a variant */
while (((nxt[0] >= 'A') && (nxt[0] <= 'Z')) ||
((nxt[0] >= 'a') && (nxt[0] <= 'z')))
nxt++;
if ((nxt - cur < 5) || (nxt - cur > 8))
return(0);
/* we parsed a variant */
variant:
if (nxt[0] == 0)
return(1);
if (nxt[0] != '-')
return(0);
/* extensions and private use subtags not checked */
return (1);
region_m49:
if (((nxt[1] >= '0') && (nxt[1] <= '9')) &&
((nxt[2] >= '0') && (nxt[2] <= '9'))) {
nxt += 3;
goto region;
}
return(0);
}
/************************************************************************
* *
* Parser stacks related functions and macros *
* *
************************************************************************/
static xmlChar *
xmlParseStringEntityRef(xmlParserCtxtPtr ctxt, const xmlChar **str);
/**
* xmlParserNsCreate:
*
* Create a new namespace database.
*
* Returns the new obejct.
*/
xmlParserNsData *
xmlParserNsCreate(void) {
xmlParserNsData *nsdb = xmlMalloc(sizeof(*nsdb));
if (nsdb == NULL)
return(NULL);
memset(nsdb, 0, sizeof(*nsdb));
nsdb->defaultNsIndex = INT_MAX;
return(nsdb);
}
/**
* xmlParserNsFree:
* @nsdb: namespace database
*
* Free a namespace database.
*/
void
xmlParserNsFree(xmlParserNsData *nsdb) {
if (nsdb == NULL)
return;
xmlFree(nsdb->extra);
xmlFree(nsdb->hash);
xmlFree(nsdb);
}
/**
* xmlParserNsReset:
* @nsdb: namespace database
*
* Reset a namespace database.
*/
static void
xmlParserNsReset(xmlParserNsData *nsdb) {
if (nsdb == NULL)
return;
nsdb->hashElems = 0;
nsdb->elementId = 0;
nsdb->defaultNsIndex = INT_MAX;
if (nsdb->hash)
memset(nsdb->hash, 0, nsdb->hashSize * sizeof(nsdb->hash[0]));
}
/**
* xmlParserStartElement:
* @nsdb: namespace database
*
* Signal that a new element has started.
*
* Returns 0 on success, -1 if the element counter overflowed.
*/
static int
xmlParserNsStartElement(xmlParserNsData *nsdb) {
if (nsdb->elementId == UINT_MAX)
return(-1);
nsdb->elementId++;
return(0);
}
/**
* xmlParserNsLookup:
* @ctxt: parser context
* @prefix: namespace prefix
* @bucketPtr: optional bucket (return value)
*
* Lookup namespace with given prefix. If @bucketPtr is non-NULL, it will
* be set to the matching bucket, or the first empty bucket if no match
* was found.
*
* Returns the namespace index on success, INT_MAX if no namespace was
* found.
*/
static int
xmlParserNsLookup(xmlParserCtxtPtr ctxt, const xmlHashedString *prefix,
xmlParserNsBucket **bucketPtr) {
xmlParserNsBucket *bucket, *tombstone;
unsigned index, hashValue;
if (prefix->name == NULL)
return(ctxt->nsdb->defaultNsIndex);
if (ctxt->nsdb->hashSize == 0)
return(INT_MAX);
hashValue = prefix->hashValue;
index = hashValue & (ctxt->nsdb->hashSize - 1);
bucket = &ctxt->nsdb->hash[index];
tombstone = NULL;
while (bucket->hashValue) {
if (bucket->index == INT_MAX) {
if (tombstone == NULL)
tombstone = bucket;
} else if (bucket->hashValue == hashValue) {
if (ctxt->nsTab[bucket->index * 2] == prefix->name) {
if (bucketPtr != NULL)
*bucketPtr = bucket;
return(bucket->index);
}
}
index++;
bucket++;
if (index == ctxt->nsdb->hashSize) {
index = 0;
bucket = ctxt->nsdb->hash;
}
}
if (bucketPtr != NULL)
*bucketPtr = tombstone ? tombstone : bucket;
return(INT_MAX);
}
/**
* xmlParserNsLookupUri:
* @ctxt: parser context
* @prefix: namespace prefix
*
* Lookup namespace URI with given prefix.
*
* Returns the namespace URI on success, NULL if no namespace was found.
*/
static const xmlChar *
xmlParserNsLookupUri(xmlParserCtxtPtr ctxt, const xmlHashedString *prefix) {
const xmlChar *ret;
int nsIndex;
if (prefix->name == ctxt->str_xml)
return(ctxt->str_xml_ns);
/*
* minNsIndex is used when building an entity tree. We must
* ignore namespaces declared outside the entity.
*/
nsIndex = xmlParserNsLookup(ctxt, prefix, NULL);
if ((nsIndex == INT_MAX) || (nsIndex < ctxt->nsdb->minNsIndex))
return(NULL);
ret = ctxt->nsTab[nsIndex * 2 + 1];
if (ret[0] == 0)
ret = NULL;
return(ret);
}
/**
* xmlParserNsLookupSax:
* @ctxt: parser context
* @prefix: namespace prefix
*
* Lookup extra data for the given prefix. This returns data stored
* with xmlParserNsUdpateSax.
*
* Returns the data on success, NULL if no namespace was found.
*/
void *
xmlParserNsLookupSax(xmlParserCtxtPtr ctxt, const xmlChar *prefix) {
xmlHashedString hprefix;
int nsIndex;
if (prefix == ctxt->str_xml)
return(NULL);
hprefix.name = prefix;
if (prefix != NULL)
hprefix.hashValue = xmlDictComputeHash(ctxt->dict, prefix);
else
hprefix.hashValue = 0;
nsIndex = xmlParserNsLookup(ctxt, &hprefix, NULL);
if ((nsIndex == INT_MAX) || (nsIndex < ctxt->nsdb->minNsIndex))
return(NULL);
return(ctxt->nsdb->extra[nsIndex].saxData);
}
/**
* xmlParserNsUpdateSax:
* @ctxt: parser context
* @prefix: namespace prefix
* @saxData: extra data for SAX handler
*
* Sets or updates extra data for the given prefix. This value will be
* returned by xmlParserNsLookupSax as long as the namespace with the
* given prefix is in scope.
*
* Returns the data on success, NULL if no namespace was found.
*/
int
xmlParserNsUpdateSax(xmlParserCtxtPtr ctxt, const xmlChar *prefix,
void *saxData) {
xmlHashedString hprefix;
int nsIndex;
if (prefix == ctxt->str_xml)
return(-1);
hprefix.name = prefix;
if (prefix != NULL)
hprefix.hashValue = xmlDictComputeHash(ctxt->dict, prefix);
else
hprefix.hashValue = 0;
nsIndex = xmlParserNsLookup(ctxt, &hprefix, NULL);
if ((nsIndex == INT_MAX) || (nsIndex < ctxt->nsdb->minNsIndex))
return(-1);
ctxt->nsdb->extra[nsIndex].saxData = saxData;
return(0);
}
/**
* xmlParserNsGrow:
* @ctxt: parser context
*
* Grows the namespace tables.
*
* Returns 0 on success, -1 if a memory allocation failed.
*/
static int
xmlParserNsGrow(xmlParserCtxtPtr ctxt) {
const xmlChar **table;
xmlParserNsExtra *extra;
int newSize;
if (ctxt->nsMax > INT_MAX / 2)
goto error;
newSize = ctxt->nsMax ? ctxt->nsMax * 2 : 16;
table = xmlRealloc(ctxt->nsTab, 2 * newSize * sizeof(table[0]));
if (table == NULL)
goto error;
ctxt->nsTab = table;
extra = xmlRealloc(ctxt->nsdb->extra, newSize * sizeof(extra[0]));
if (extra == NULL)
goto error;
ctxt->nsdb->extra = extra;
ctxt->nsMax = newSize;
return(0);
error:
xmlErrMemory(ctxt);
return(-1);
}
/**
* xmlParserNsPush:
* @ctxt: parser context
* @prefix: prefix with hash value
* @uri: uri with hash value
* @saxData: extra data for SAX handler
* @defAttr: whether the namespace comes from a default attribute
*
* Push a new namespace on the table.
*
* Returns 1 if the namespace was pushed, 0 if the namespace was ignored,
* -1 if a memory allocation failed.
*/
static int
xmlParserNsPush(xmlParserCtxtPtr ctxt, const xmlHashedString *prefix,
const xmlHashedString *uri, void *saxData, int defAttr) {
xmlParserNsBucket *bucket = NULL;
xmlParserNsExtra *extra;
const xmlChar **ns;
unsigned hashValue, nsIndex, oldIndex;
if ((prefix != NULL) && (prefix->name == ctxt->str_xml))
return(0);
if ((ctxt->nsNr >= ctxt->nsMax) && (xmlParserNsGrow(ctxt) < 0)) {
xmlErrMemory(ctxt);
return(-1);
}
/*
* Default namespace and 'xml' namespace
*/
if ((prefix == NULL) || (prefix->name == NULL)) {
oldIndex = ctxt->nsdb->defaultNsIndex;
if (oldIndex != INT_MAX) {
extra = &ctxt->nsdb->extra[oldIndex];
if (extra->elementId == ctxt->nsdb->elementId) {
if (defAttr == 0)
xmlErrAttributeDup(ctxt, NULL, BAD_CAST "xmlns");
return(0);
}
if ((ctxt->options & XML_PARSE_NSCLEAN) &&
(uri->name == ctxt->nsTab[oldIndex * 2 + 1]))
return(0);
}
ctxt->nsdb->defaultNsIndex = ctxt->nsNr;
goto populate_entry;
}
/*
* Hash table lookup
*/
oldIndex = xmlParserNsLookup(ctxt, prefix, &bucket);
if (oldIndex != INT_MAX) {
extra = &ctxt->nsdb->extra[oldIndex];
/*
* Check for duplicate definitions on the same element.
*/
if (extra->elementId == ctxt->nsdb->elementId) {
if (defAttr == 0)
xmlErrAttributeDup(ctxt, BAD_CAST "xmlns", prefix->name);
return(0);
}
if ((ctxt->options & XML_PARSE_NSCLEAN) &&
(uri->name == ctxt->nsTab[bucket->index * 2 + 1]))
return(0);
bucket->index = ctxt->nsNr;
goto populate_entry;
}
/*
* Insert new bucket
*/
hashValue = prefix->hashValue;
/*
* Grow hash table, 50% fill factor
*/
if (ctxt->nsdb->hashElems + 1 > ctxt->nsdb->hashSize / 2) {
xmlParserNsBucket *newHash;
unsigned newSize, i, index;
if (ctxt->nsdb->hashSize > UINT_MAX / 2) {
xmlErrMemory(ctxt);
return(-1);
}
newSize = ctxt->nsdb->hashSize ? ctxt->nsdb->hashSize * 2 : 16;
newHash = xmlMalloc(newSize * sizeof(newHash[0]));
if (newHash == NULL) {
xmlErrMemory(ctxt);
return(-1);
}
memset(newHash, 0, newSize * sizeof(newHash[0]));
for (i = 0; i < ctxt->nsdb->hashSize; i++) {
unsigned hv = ctxt->nsdb->hash[i].hashValue;
unsigned newIndex;
if ((hv == 0) || (ctxt->nsdb->hash[i].index == INT_MAX))
continue;
newIndex = hv & (newSize - 1);
while (newHash[newIndex].hashValue != 0) {
newIndex++;
if (newIndex == newSize)
newIndex = 0;
}
newHash[newIndex] = ctxt->nsdb->hash[i];
}
xmlFree(ctxt->nsdb->hash);
ctxt->nsdb->hash = newHash;
ctxt->nsdb->hashSize = newSize;
/*
* Relookup
*/
index = hashValue & (newSize - 1);
while (newHash[index].hashValue != 0) {
index++;
if (index == newSize)
index = 0;
}
bucket = &newHash[index];
}
bucket->hashValue = hashValue;
bucket->index = ctxt->nsNr;
ctxt->nsdb->hashElems++;
oldIndex = INT_MAX;
populate_entry:
nsIndex = ctxt->nsNr;
ns = &ctxt->nsTab[nsIndex * 2];
ns[0] = prefix ? prefix->name : NULL;
ns[1] = uri->name;
extra = &ctxt->nsdb->extra[nsIndex];
extra->saxData = saxData;
extra->prefixHashValue = prefix ? prefix->hashValue : 0;
extra->uriHashValue = uri->hashValue;
extra->elementId = ctxt->nsdb->elementId;
extra->oldIndex = oldIndex;
ctxt->nsNr++;
return(1);
}
/**
* xmlParserNsPop:
* @ctxt: an XML parser context
* @nr: the number to pop
*
* Pops the top @nr namespaces and restores the hash table.
*
* Returns the number of namespaces popped.
*/
static int
xmlParserNsPop(xmlParserCtxtPtr ctxt, int nr)
{
int i;
/* assert(nr <= ctxt->nsNr); */
for (i = ctxt->nsNr - 1; i >= ctxt->nsNr - nr; i--) {
const xmlChar *prefix = ctxt->nsTab[i * 2];
xmlParserNsExtra *extra = &ctxt->nsdb->extra[i];
if (prefix == NULL) {
ctxt->nsdb->defaultNsIndex = extra->oldIndex;
} else {
xmlHashedString hprefix;
xmlParserNsBucket *bucket = NULL;
hprefix.name = prefix;
hprefix.hashValue = extra->prefixHashValue;
xmlParserNsLookup(ctxt, &hprefix, &bucket);
/* assert(bucket && bucket->hashValue); */
bucket->index = extra->oldIndex;
}
}
ctxt->nsNr -= nr;
return(nr);
}
static int
xmlCtxtGrowAttrs(xmlParserCtxtPtr ctxt, int nr) {
const xmlChar **atts;
unsigned *attallocs;
int maxatts;
if (nr + 5 > ctxt->maxatts) {
maxatts = ctxt->maxatts == 0 ? 55 : (nr + 5) * 2;
atts = (const xmlChar **) xmlMalloc(
maxatts * sizeof(const xmlChar *));
if (atts == NULL) goto mem_error;
attallocs = xmlRealloc(ctxt->attallocs,
(maxatts / 5) * sizeof(attallocs[0]));
if (attallocs == NULL) {
xmlFree(atts);
goto mem_error;
}
if (ctxt->maxatts > 0)
memcpy(atts, ctxt->atts, ctxt->maxatts * sizeof(const xmlChar *));
xmlFree(ctxt->atts);
ctxt->atts = atts;
ctxt->attallocs = attallocs;
ctxt->maxatts = maxatts;
}
return(ctxt->maxatts);
mem_error:
xmlErrMemory(ctxt);
return(-1);
}
/**
* inputPush:
* @ctxt: an XML parser context
* @value: the parser input
*
* Pushes a new parser input on top of the input stack
*
* Returns -1 in case of error, the index in the stack otherwise
*/
int
inputPush(xmlParserCtxtPtr ctxt, xmlParserInputPtr value)
{
if ((ctxt == NULL) || (value == NULL))
return(-1);
if (ctxt->inputNr >= ctxt->inputMax) {
size_t newSize = ctxt->inputMax * 2;
xmlParserInputPtr *tmp;
tmp = (xmlParserInputPtr *) xmlRealloc(ctxt->inputTab,
newSize * sizeof(*tmp));
if (tmp == NULL) {
xmlErrMemory(ctxt);
return (-1);
}
ctxt->inputTab = tmp;
ctxt->inputMax = newSize;
}
ctxt->inputTab[ctxt->inputNr] = value;
ctxt->input = value;
return (ctxt->inputNr++);
}
/**
* inputPop:
* @ctxt: an XML parser context
*
* Pops the top parser input from the input stack
*
* Returns the input just removed
*/
xmlParserInputPtr
inputPop(xmlParserCtxtPtr ctxt)
{
xmlParserInputPtr ret;
if (ctxt == NULL)
return(NULL);
if (ctxt->inputNr <= 0)
return (NULL);
ctxt->inputNr--;
if (ctxt->inputNr > 0)
ctxt->input = ctxt->inputTab[ctxt->inputNr - 1];
else
ctxt->input = NULL;
ret = ctxt->inputTab[ctxt->inputNr];
ctxt->inputTab[ctxt->inputNr] = NULL;
return (ret);
}
/**
* nodePush:
* @ctxt: an XML parser context
* @value: the element node
*
* DEPRECATED: Internal function, do not use.
*
* Pushes a new element node on top of the node stack
*
* Returns -1 in case of error, the index in the stack otherwise
*/
int
nodePush(xmlParserCtxtPtr ctxt, xmlNodePtr value)
{
int maxDepth;
if (ctxt == NULL)
return(0);
maxDepth = (ctxt->options & XML_PARSE_HUGE) ? 2048 : 256;
if (ctxt->nodeNr > maxDepth) {
xmlFatalErrMsgInt(ctxt, XML_ERR_RESOURCE_LIMIT,
"Excessive depth in document: %d use XML_PARSE_HUGE option\n",
ctxt->nodeNr);
xmlHaltParser(ctxt);
return(-1);
}
if (ctxt->nodeNr >= ctxt->nodeMax) {
xmlNodePtr *tmp;
tmp = (xmlNodePtr *) xmlRealloc(ctxt->nodeTab,
ctxt->nodeMax * 2 *
sizeof(ctxt->nodeTab[0]));
if (tmp == NULL) {
xmlErrMemory(ctxt);
return (-1);
}
ctxt->nodeTab = tmp;
ctxt->nodeMax *= 2;
}
ctxt->nodeTab[ctxt->nodeNr] = value;
ctxt->node = value;
return (ctxt->nodeNr++);
}
/**
* nodePop:
* @ctxt: an XML parser context
*
* DEPRECATED: Internal function, do not use.
*
* Pops the top element node from the node stack
*
* Returns the node just removed
*/
xmlNodePtr
nodePop(xmlParserCtxtPtr ctxt)
{
xmlNodePtr ret;
if (ctxt == NULL) return(NULL);
if (ctxt->nodeNr <= 0)
return (NULL);
ctxt->nodeNr--;
if (ctxt->nodeNr > 0)
ctxt->node = ctxt->nodeTab[ctxt->nodeNr - 1];
else
ctxt->node = NULL;
ret = ctxt->nodeTab[ctxt->nodeNr];
ctxt->nodeTab[ctxt->nodeNr] = NULL;
return (ret);
}
/**
* nameNsPush:
* @ctxt: an XML parser context
* @value: the element name
* @prefix: the element prefix
* @URI: the element namespace name
* @line: the current line number for error messages
* @nsNr: the number of namespaces pushed on the namespace table
*
* Pushes a new element name/prefix/URL on top of the name stack
*
* Returns -1 in case of error, the index in the stack otherwise
*/
static int
nameNsPush(xmlParserCtxtPtr ctxt, const xmlChar * value,
const xmlChar *prefix, const xmlChar *URI, int line, int nsNr)
{
xmlStartTag *tag;
if (ctxt->nameNr >= ctxt->nameMax) {
const xmlChar * *tmp;
xmlStartTag *tmp2;
ctxt->nameMax *= 2;
tmp = (const xmlChar * *) xmlRealloc((xmlChar * *)ctxt->nameTab,
ctxt->nameMax *
sizeof(ctxt->nameTab[0]));
if (tmp == NULL) {
ctxt->nameMax /= 2;
goto mem_error;
}
ctxt->nameTab = tmp;
tmp2 = (xmlStartTag *) xmlRealloc((void * *)ctxt->pushTab,
ctxt->nameMax *
sizeof(ctxt->pushTab[0]));
if (tmp2 == NULL) {
ctxt->nameMax /= 2;
goto mem_error;
}
ctxt->pushTab = tmp2;
} else if (ctxt->pushTab == NULL) {
ctxt->pushTab = (xmlStartTag *) xmlMalloc(ctxt->nameMax *
sizeof(ctxt->pushTab[0]));
if (ctxt->pushTab == NULL)
goto mem_error;
}
ctxt->nameTab[ctxt->nameNr] = value;
ctxt->name = value;
tag = &ctxt->pushTab[ctxt->nameNr];
tag->prefix = prefix;
tag->URI = URI;
tag->line = line;
tag->nsNr = nsNr;
return (ctxt->nameNr++);
mem_error:
xmlErrMemory(ctxt);
return (-1);
}
#ifdef LIBXML_PUSH_ENABLED
/**
* nameNsPop:
* @ctxt: an XML parser context
*
* Pops the top element/prefix/URI name from the name stack
*
* Returns the name just removed
*/
static const xmlChar *
nameNsPop(xmlParserCtxtPtr ctxt)
{
const xmlChar *ret;
if (ctxt->nameNr <= 0)
return (NULL);
ctxt->nameNr--;
if (ctxt->nameNr > 0)
ctxt->name = ctxt->nameTab[ctxt->nameNr - 1];
else
ctxt->name = NULL;
ret = ctxt->nameTab[ctxt->nameNr];
ctxt->nameTab[ctxt->nameNr] = NULL;
return (ret);
}
#endif /* LIBXML_PUSH_ENABLED */
/**
* namePush:
* @ctxt: an XML parser context
* @value: the element name
*
* DEPRECATED: Internal function, do not use.
*
* Pushes a new element name on top of the name stack
*
* Returns -1 in case of error, the index in the stack otherwise
*/
int
namePush(xmlParserCtxtPtr ctxt, const xmlChar * value)
{
if (ctxt == NULL) return (-1);
if (ctxt->nameNr >= ctxt->nameMax) {
const xmlChar * *tmp;
tmp = (const xmlChar * *) xmlRealloc((xmlChar * *)ctxt->nameTab,
ctxt->nameMax * 2 *
sizeof(ctxt->nameTab[0]));
if (tmp == NULL) {
goto mem_error;
}
ctxt->nameTab = tmp;
ctxt->nameMax *= 2;
}
ctxt->nameTab[ctxt->nameNr] = value;
ctxt->name = value;
return (ctxt->nameNr++);
mem_error:
xmlErrMemory(ctxt);
return (-1);
}
/**
* namePop:
* @ctxt: an XML parser context
*
* DEPRECATED: Internal function, do not use.
*
* Pops the top element name from the name stack
*
* Returns the name just removed
*/
const xmlChar *
namePop(xmlParserCtxtPtr ctxt)
{
const xmlChar *ret;
if ((ctxt == NULL) || (ctxt->nameNr <= 0))
return (NULL);
ctxt->nameNr--;
if (ctxt->nameNr > 0)
ctxt->name = ctxt->nameTab[ctxt->nameNr - 1];
else
ctxt->name = NULL;
ret = ctxt->nameTab[ctxt->nameNr];
ctxt->nameTab[ctxt->nameNr] = NULL;
return (ret);
}
static int spacePush(xmlParserCtxtPtr ctxt, int val) {
if (ctxt->spaceNr >= ctxt->spaceMax) {
int *tmp;
ctxt->spaceMax *= 2;
tmp = (int *) xmlRealloc(ctxt->spaceTab,
ctxt->spaceMax * sizeof(ctxt->spaceTab[0]));
if (tmp == NULL) {
xmlErrMemory(ctxt);
ctxt->spaceMax /=2;
return(-1);
}
ctxt->spaceTab = tmp;
}
ctxt->spaceTab[ctxt->spaceNr] = val;
ctxt->space = &ctxt->spaceTab[ctxt->spaceNr];
return(ctxt->spaceNr++);
}
static int spacePop(xmlParserCtxtPtr ctxt) {
int ret;
if (ctxt->spaceNr <= 0) return(0);
ctxt->spaceNr--;
if (ctxt->spaceNr > 0)
ctxt->space = &ctxt->spaceTab[ctxt->spaceNr - 1];
else
ctxt->space = &ctxt->spaceTab[0];
ret = ctxt->spaceTab[ctxt->spaceNr];
ctxt->spaceTab[ctxt->spaceNr] = -1;
return(ret);
}
/*
* Macros for accessing the content. Those should be used only by the parser,
* and not exported.
*
* Dirty macros, i.e. one often need to make assumption on the context to
* use them
*
* CUR_PTR return the current pointer to the xmlChar to be parsed.
* To be used with extreme caution since operations consuming
* characters may move the input buffer to a different location !
* CUR returns the current xmlChar value, i.e. a 8 bit value if compiled
* This should be used internally by the parser
* only to compare to ASCII values otherwise it would break when
* running with UTF-8 encoding.
* RAW same as CUR but in the input buffer, bypass any token
* extraction that may have been done
* NXT(n) returns the n'th next xmlChar. Same as CUR is should be used only
* to compare on ASCII based substring.
* SKIP(n) Skip n xmlChar, and must also be used only to skip ASCII defined
* strings without newlines within the parser.
* NEXT1(l) Skip 1 xmlChar, and must also be used only to skip 1 non-newline ASCII
* defined char within the parser.
* Clean macros, not dependent of an ASCII context, expect UTF-8 encoding
*
* NEXT Skip to the next character, this does the proper decoding
* in UTF-8 mode. It also pop-up unfinished entities on the fly.
* NEXTL(l) Skip the current unicode character of l xmlChars long.
* CUR_CHAR(l) returns the current unicode character (int), set l
* to the number of xmlChars used for the encoding [0-5].
* CUR_SCHAR same but operate on a string instead of the context
* COPY_BUF copy the current unicode char to the target buffer, increment
* the index
* GROW, SHRINK handling of input buffers
*/
#define RAW (*ctxt->input->cur)
#define CUR (*ctxt->input->cur)
#define NXT(val) ctxt->input->cur[(val)]
#define CUR_PTR ctxt->input->cur
#define BASE_PTR ctxt->input->base
#define CMP4( s, c1, c2, c3, c4 ) \
( ((unsigned char *) s)[ 0 ] == c1 && ((unsigned char *) s)[ 1 ] == c2 && \
((unsigned char *) s)[ 2 ] == c3 && ((unsigned char *) s)[ 3 ] == c4 )
#define CMP5( s, c1, c2, c3, c4, c5 ) \
( CMP4( s, c1, c2, c3, c4 ) && ((unsigned char *) s)[ 4 ] == c5 )
#define CMP6( s, c1, c2, c3, c4, c5, c6 ) \
( CMP5( s, c1, c2, c3, c4, c5 ) && ((unsigned char *) s)[ 5 ] == c6 )
#define CMP7( s, c1, c2, c3, c4, c5, c6, c7 ) \
( CMP6( s, c1, c2, c3, c4, c5, c6 ) && ((unsigned char *) s)[ 6 ] == c7 )
#define CMP8( s, c1, c2, c3, c4, c5, c6, c7, c8 ) \
( CMP7( s, c1, c2, c3, c4, c5, c6, c7 ) && ((unsigned char *) s)[ 7 ] == c8 )
#define CMP9( s, c1, c2, c3, c4, c5, c6, c7, c8, c9 ) \
( CMP8( s, c1, c2, c3, c4, c5, c6, c7, c8 ) && \
((unsigned char *) s)[ 8 ] == c9 )
#define CMP10( s, c1, c2, c3, c4, c5, c6, c7, c8, c9, c10 ) \
( CMP9( s, c1, c2, c3, c4, c5, c6, c7, c8, c9 ) && \
((unsigned char *) s)[ 9 ] == c10 )
#define SKIP(val) do { \
ctxt->input->cur += (val),ctxt->input->col+=(val); \
if (*ctxt->input->cur == 0) \
xmlParserGrow(ctxt); \
} while (0)
#define SKIPL(val) do { \
int skipl; \
for(skipl=0; skipl<val; skipl++) { \
if (*(ctxt->input->cur) == '\n') { \
ctxt->input->line++; ctxt->input->col = 1; \
} else ctxt->input->col++; \
ctxt->input->cur++; \
} \
if (*ctxt->input->cur == 0) \
xmlParserGrow(ctxt); \
} while (0)
#define SHRINK \
if ((!PARSER_PROGRESSIVE(ctxt)) && \
(ctxt->input->cur - ctxt->input->base > 2 * INPUT_CHUNK) && \
(ctxt->input->end - ctxt->input->cur < 2 * INPUT_CHUNK)) \
xmlParserShrink(ctxt);
#define GROW \
if ((!PARSER_PROGRESSIVE(ctxt)) && \
(ctxt->input->end - ctxt->input->cur < INPUT_CHUNK)) \
xmlParserGrow(ctxt);
#define SKIP_BLANKS xmlSkipBlankChars(ctxt)
#define SKIP_BLANKS_PE xmlSkipBlankCharsPE(ctxt)
#define NEXT xmlNextChar(ctxt)
#define NEXT1 { \
ctxt->input->col++; \
ctxt->input->cur++; \
if (*ctxt->input->cur == 0) \
xmlParserGrow(ctxt); \
}
#define NEXTL(l) do { \
if (*(ctxt->input->cur) == '\n') { \
ctxt->input->line++; ctxt->input->col = 1; \
} else ctxt->input->col++; \
ctxt->input->cur += l; \
} while (0)
#define CUR_CHAR(l) xmlCurrentChar(ctxt, &l)
#define CUR_SCHAR(s, l) xmlStringCurrentChar(ctxt, s, &l)
#define COPY_BUF(b, i, v) \
if (v < 0x80) b[i++] = v; \
else i += xmlCopyCharMultiByte(&b[i],v)
/**
* xmlSkipBlankChars:
* @ctxt: the XML parser context
*
* DEPRECATED: Internal function, do not use.
*
* Skip whitespace in the input stream.
*
* Returns the number of space chars skipped
*/
int
xmlSkipBlankChars(xmlParserCtxtPtr ctxt) {
const xmlChar *cur;
int res = 0;
/*
* It's Okay to use CUR/NEXT here since all the blanks are on
* the ASCII range.
*/
cur = ctxt->input->cur;
while (IS_BLANK_CH(*cur)) {
if (*cur == '\n') {
ctxt->input->line++; ctxt->input->col = 1;
} else {
ctxt->input->col++;
}
cur++;
if (res < INT_MAX)
res++;
if (*cur == 0) {
ctxt->input->cur = cur;
xmlParserGrow(ctxt);
cur = ctxt->input->cur;
}
}
ctxt->input->cur = cur;
return(res);
}
static void
xmlPopPE(xmlParserCtxtPtr ctxt) {
unsigned long consumed;
xmlEntityPtr ent;
ent = ctxt->input->entity;
ent->flags &= ~XML_ENT_EXPANDING;
if ((ent->flags & XML_ENT_CHECKED) == 0) {
int result;
/*
* Read the rest of the stream in case of errors. We want
* to account for the whole entity size.
*/
do {
ctxt->input->cur = ctxt->input->end;
xmlParserShrink(ctxt);
result = xmlParserGrow(ctxt);
} while (result > 0);
consumed = ctxt->input->consumed;
xmlSaturatedAddSizeT(&consumed,
ctxt->input->end - ctxt->input->base);
xmlSaturatedAdd(&ent->expandedSize, consumed);
/*
* Add to sizeentities when parsing an external entity
* for the first time.
*/
if (ent->etype == XML_EXTERNAL_PARAMETER_ENTITY) {
xmlSaturatedAdd(&ctxt->sizeentities, consumed);
}
ent->flags |= XML_ENT_CHECKED;
}
xmlPopInput(ctxt);
xmlParserEntityCheck(ctxt, ent->expandedSize);
}
/**
* xmlSkipBlankCharsPE:
* @ctxt: the XML parser context
*
* Skip whitespace in the input stream, also handling parameter
* entities.
*
* Returns the number of space chars skipped
*/
static int
xmlSkipBlankCharsPE(xmlParserCtxtPtr ctxt) {
int res = 0;
int inParam;
int expandParam;
inParam = PARSER_IN_PE(ctxt);
expandParam = PARSER_EXTERNAL(ctxt);
if (!inParam && !expandParam)
return(xmlSkipBlankChars(ctxt));
while (PARSER_STOPPED(ctxt) == 0) {
if (IS_BLANK_CH(CUR)) { /* CHECKED tstblanks.xml */
NEXT;
} else if (CUR == '%') {
if ((expandParam == 0) ||
(IS_BLANK_CH(NXT(1))) || (NXT(1) == 0))
break;
/*
* Expand parameter entity. We continue to consume
* whitespace at the start of the entity and possible
* even consume the whole entity and pop it. We might
* even pop multiple PEs in this loop.
*/
xmlParsePEReference(ctxt);
inParam = PARSER_IN_PE(ctxt);
expandParam = PARSER_EXTERNAL(ctxt);
} else if (CUR == 0) {
if (inParam == 0)
break;
xmlPopPE(ctxt);
inParam = PARSER_IN_PE(ctxt);
expandParam = PARSER_EXTERNAL(ctxt);
} else {
break;
}
/*
* Also increase the counter when entering or exiting a PERef.
* The spec says: "When a parameter-entity reference is recognized
* in the DTD and included, its replacement text MUST be enlarged
* by the attachment of one leading and one following space (#x20)
* character."
*/
if (res < INT_MAX)
res++;
}
return(res);
}
/************************************************************************
* *
* Commodity functions to handle entities *
* *
************************************************************************/
/**
* xmlPopInput:
* @ctxt: an XML parser context
*
* xmlPopInput: the current input pointed by ctxt->input came to an end
* pop it and return the next char.
*
* Returns the current xmlChar in the parser context
*/
xmlChar
xmlPopInput(xmlParserCtxtPtr ctxt) {
xmlParserInputPtr input;
if ((ctxt == NULL) || (ctxt->inputNr <= 1)) return(0);
input = inputPop(ctxt);
xmlFreeInputStream(input);
if (*ctxt->input->cur == 0)
xmlParserGrow(ctxt);
return(CUR);
}
/**
* xmlPushInput:
* @ctxt: an XML parser context
* @input: an XML parser input fragment (entity, XML fragment ...).
*
* Push an input stream onto the stack.
*
* Returns -1 in case of error or the index in the input stack
*/
int
xmlPushInput(xmlParserCtxtPtr ctxt, xmlParserInputPtr input) {
int maxDepth;
int ret;
if ((ctxt == NULL) || (input == NULL))
return(-1);
maxDepth = (ctxt->options & XML_PARSE_HUGE) ? 40 : 20;
if (ctxt->inputNr > maxDepth) {
xmlFatalErrMsg(ctxt, XML_ERR_RESOURCE_LIMIT,
"Maximum entity nesting depth exceeded");
xmlHaltParser(ctxt);
return(-1);
}
ret = inputPush(ctxt, input);
GROW;
return(ret);
}
/**
* xmlParseCharRef:
* @ctxt: an XML parser context
*
* DEPRECATED: Internal function, don't use.
*
* Parse a numeric character reference. Always consumes '&'.
*
* [66] CharRef ::= '&#' [0-9]+ ';' |
* '&#x' [0-9a-fA-F]+ ';'
*
* [ WFC: Legal Character ]
* Characters referred to using character references must match the
* production for Char.
*
* Returns the value parsed (as an int), 0 in case of error
*/
int
xmlParseCharRef(xmlParserCtxtPtr ctxt) {
int val = 0;
int count = 0;
/*
* Using RAW/CUR/NEXT is okay since we are working on ASCII range here
*/
if ((RAW == '&') && (NXT(1) == '#') &&
(NXT(2) == 'x')) {
SKIP(3);
GROW;
while ((RAW != ';') && (PARSER_STOPPED(ctxt) == 0)) {
if (count++ > 20) {
count = 0;
GROW;
}
if ((RAW >= '0') && (RAW <= '9'))
val = val * 16 + (CUR - '0');
else if ((RAW >= 'a') && (RAW <= 'f') && (count < 20))
val = val * 16 + (CUR - 'a') + 10;
else if ((RAW >= 'A') && (RAW <= 'F') && (count < 20))
val = val * 16 + (CUR - 'A') + 10;
else {
xmlFatalErr(ctxt, XML_ERR_INVALID_HEX_CHARREF, NULL);
val = 0;
break;
}
if (val > 0x110000)
val = 0x110000;
NEXT;
count++;
}
if (RAW == ';') {
/* on purpose to avoid reentrancy problems with NEXT and SKIP */
ctxt->input->col++;
ctxt->input->cur++;
}
} else if ((RAW == '&') && (NXT(1) == '#')) {
SKIP(2);
GROW;
while (RAW != ';') { /* loop blocked by count */
if (count++ > 20) {
count = 0;
GROW;
}
if ((RAW >= '0') && (RAW <= '9'))
val = val * 10 + (CUR - '0');
else {
xmlFatalErr(ctxt, XML_ERR_INVALID_DEC_CHARREF, NULL);
val = 0;
break;
}
if (val > 0x110000)
val = 0x110000;
NEXT;
count++;
}
if (RAW == ';') {
/* on purpose to avoid reentrancy problems with NEXT and SKIP */
ctxt->input->col++;
ctxt->input->cur++;
}
} else {
if (RAW == '&')
SKIP(1);
xmlFatalErr(ctxt, XML_ERR_INVALID_CHARREF, NULL);
}
/*
* [ WFC: Legal Character ]
* Characters referred to using character references must match the
* production for Char.
*/
if (val >= 0x110000) {
xmlFatalErrMsgInt(ctxt, XML_ERR_INVALID_CHAR,
"xmlParseCharRef: character reference out of bounds\n",
val);
} else if (IS_CHAR(val)) {
return(val);
} else {
xmlFatalErrMsgInt(ctxt, XML_ERR_INVALID_CHAR,
"xmlParseCharRef: invalid xmlChar value %d\n",
val);
}
return(0);
}
/**
* xmlParseStringCharRef:
* @ctxt: an XML parser context
* @str: a pointer to an index in the string
*
* parse Reference declarations, variant parsing from a string rather
* than an an input flow.
*
* [66] CharRef ::= '&#' [0-9]+ ';' |
* '&#x' [0-9a-fA-F]+ ';'
*
* [ WFC: Legal Character ]
* Characters referred to using character references must match the
* production for Char.
*
* Returns the value parsed (as an int), 0 in case of error, str will be
* updated to the current value of the index
*/
static int
xmlParseStringCharRef(xmlParserCtxtPtr ctxt, const xmlChar **str) {
const xmlChar *ptr;
xmlChar cur;
int val = 0;
if ((str == NULL) || (*str == NULL)) return(0);
ptr = *str;
cur = *ptr;
if ((cur == '&') && (ptr[1] == '#') && (ptr[2] == 'x')) {
ptr += 3;
cur = *ptr;
while (cur != ';') { /* Non input consuming loop */
if ((cur >= '0') && (cur <= '9'))
val = val * 16 + (cur - '0');
else if ((cur >= 'a') && (cur <= 'f'))
val = val * 16 + (cur - 'a') + 10;
else if ((cur >= 'A') && (cur <= 'F'))
val = val * 16 + (cur - 'A') + 10;
else {
xmlFatalErr(ctxt, XML_ERR_INVALID_HEX_CHARREF, NULL);
val = 0;
break;
}
if (val > 0x110000)
val = 0x110000;
ptr++;
cur = *ptr;
}
if (cur == ';')
ptr++;
} else if ((cur == '&') && (ptr[1] == '#')){
ptr += 2;
cur = *ptr;
while (cur != ';') { /* Non input consuming loops */
if ((cur >= '0') && (cur <= '9'))
val = val * 10 + (cur - '0');
else {
xmlFatalErr(ctxt, XML_ERR_INVALID_DEC_CHARREF, NULL);
val = 0;
break;
}
if (val > 0x110000)
val = 0x110000;
ptr++;
cur = *ptr;
}
if (cur == ';')
ptr++;
} else {
xmlFatalErr(ctxt, XML_ERR_INVALID_CHARREF, NULL);
return(0);
}
*str = ptr;
/*
* [ WFC: Legal Character ]
* Characters referred to using character references must match the
* production for Char.
*/
if (val >= 0x110000) {
xmlFatalErrMsgInt(ctxt, XML_ERR_INVALID_CHAR,
"xmlParseStringCharRef: character reference out of bounds\n",
val);
} else if (IS_CHAR(val)) {
return(val);
} else {
xmlFatalErrMsgInt(ctxt, XML_ERR_INVALID_CHAR,
"xmlParseStringCharRef: invalid xmlChar value %d\n",
val);
}
return(0);
}
/**
* xmlParserHandlePEReference:
* @ctxt: the parser context
*
* DEPRECATED: Internal function, do not use.
*
* [69] PEReference ::= '%' Name ';'
*
* [ WFC: No Recursion ]
* A parsed entity must not contain a recursive
* reference to itself, either directly or indirectly.
*
* [ WFC: Entity Declared ]
* In a document without any DTD, a document with only an internal DTD
* subset which contains no parameter entity references, or a document
* with "standalone='yes'", ... ... The declaration of a parameter
* entity must precede any reference to it...
*
* [ VC: Entity Declared ]
* In a document with an external subset or external parameter entities
* with "standalone='no'", ... ... The declaration of a parameter entity
* must precede any reference to it...
*
* [ WFC: In DTD ]
* Parameter-entity references may only appear in the DTD.
* NOTE: misleading but this is handled.
*
* A PEReference may have been detected in the current input stream
* the handling is done accordingly to
* http://www.w3.org/TR/REC-xml#entproc
* i.e.
* - Included in literal in entity values
* - Included as Parameter Entity reference within DTDs
*/
void
xmlParserHandlePEReference(xmlParserCtxtPtr ctxt) {
xmlParsePEReference(ctxt);
}
/**
* xmlStringLenDecodeEntities:
* @ctxt: the parser context
* @str: the input string
* @len: the string length
* @what: combination of XML_SUBSTITUTE_REF and XML_SUBSTITUTE_PEREF
* @end: an end marker xmlChar, 0 if none
* @end2: an end marker xmlChar, 0 if none
* @end3: an end marker xmlChar, 0 if none
*
* DEPRECATED: Internal function, don't use.
*
* Returns A newly allocated string with the substitution done. The caller
* must deallocate it !
*/
xmlChar *
xmlStringLenDecodeEntities(xmlParserCtxtPtr ctxt, const xmlChar *str, int len,
int what ATTRIBUTE_UNUSED,
xmlChar end, xmlChar end2, xmlChar end3) {
if ((ctxt == NULL) || (str == NULL) || (len < 0))
return(NULL);
if ((str[len] != 0) ||
(end != 0) || (end2 != 0) || (end3 != 0))
return(NULL);
return(xmlExpandEntitiesInAttValue(ctxt, str, 0));
}
/**
* xmlStringDecodeEntities:
* @ctxt: the parser context
* @str: the input string
* @what: combination of XML_SUBSTITUTE_REF and XML_SUBSTITUTE_PEREF
* @end: an end marker xmlChar, 0 if none
* @end2: an end marker xmlChar, 0 if none
* @end3: an end marker xmlChar, 0 if none
*
* DEPRECATED: Internal function, don't use.
*
* Returns A newly allocated string with the substitution done. The caller
* must deallocate it !
*/
xmlChar *
xmlStringDecodeEntities(xmlParserCtxtPtr ctxt, const xmlChar *str,
int what ATTRIBUTE_UNUSED,
xmlChar end, xmlChar end2, xmlChar end3) {
if ((ctxt == NULL) || (str == NULL))
return(NULL);
if ((end != 0) || (end2 != 0) || (end3 != 0))
return(NULL);
return(xmlExpandEntitiesInAttValue(ctxt, str, 0));
}
/************************************************************************
* *
* Commodity functions, cleanup needed ? *
* *
************************************************************************/
/**
* areBlanks:
* @ctxt: an XML parser context
* @str: a xmlChar *
* @len: the size of @str
* @blank_chars: we know the chars are blanks
*
* Is this a sequence of blank chars that one can ignore ?
*
* Returns 1 if ignorable 0 otherwise.
*/
static int areBlanks(xmlParserCtxtPtr ctxt, const xmlChar *str, int len,
int blank_chars) {
int i;
xmlNodePtr lastChild;
/*
* Don't spend time trying to differentiate them, the same callback is
* used !
*/
if (ctxt->sax->ignorableWhitespace == ctxt->sax->characters)
return(0);
/*
* Check for xml:space value.
*/
if ((ctxt->space == NULL) || (*(ctxt->space) == 1) ||
(*(ctxt->space) == -2))
return(0);
/*
* Check that the string is made of blanks
*/
if (blank_chars == 0) {
for (i = 0;i < len;i++)
if (!(IS_BLANK_CH(str[i]))) return(0);
}
/*
* Look if the element is mixed content in the DTD if available
*/
if (ctxt->node == NULL) return(0);
if (ctxt->myDoc != NULL) {
xmlElementPtr elemDecl = NULL;
xmlDocPtr doc = ctxt->myDoc;
const xmlChar *prefix = NULL;
if (ctxt->node->ns)
prefix = ctxt->node->ns->prefix;
if (doc->intSubset != NULL)
elemDecl = xmlHashLookup2(doc->intSubset->elements, ctxt->node->name,
prefix);
if ((elemDecl == NULL) && (doc->extSubset != NULL))
elemDecl = xmlHashLookup2(doc->extSubset->elements, ctxt->node->name,
prefix);
if (elemDecl != NULL) {
if (elemDecl->etype == XML_ELEMENT_TYPE_ELEMENT)
return(1);
if ((elemDecl->etype == XML_ELEMENT_TYPE_ANY) ||
(elemDecl->etype == XML_ELEMENT_TYPE_MIXED))
return(0);
}
}
/*
* Otherwise, heuristic :-\
*/
if ((RAW != '<') && (RAW != 0xD)) return(0);
if ((ctxt->node->children == NULL) &&
(RAW == '<') && (NXT(1) == '/')) return(0);
lastChild = xmlGetLastChild(ctxt->node);
if (lastChild == NULL) {
if ((ctxt->node->type != XML_ELEMENT_NODE) &&
(ctxt->node->content != NULL)) return(0);
} else if (xmlNodeIsText(lastChild))
return(0);
else if ((ctxt->node->children != NULL) &&
(xmlNodeIsText(ctxt->node->children)))
return(0);
return(1);
}
/************************************************************************
* *
* Extra stuff for namespace support *
* Relates to http://www.w3.org/TR/WD-xml-names *
* *
************************************************************************/
/**
* xmlSplitQName:
* @ctxt: an XML parser context
* @name: an XML parser context
* @prefixOut: a xmlChar **
*
* parse an UTF8 encoded XML qualified name string
*
* [NS 5] QName ::= (Prefix ':')? LocalPart
*
* [NS 6] Prefix ::= NCName
*
* [NS 7] LocalPart ::= NCName
*
* Returns the local part, and prefix is updated
* to get the Prefix if any.
*/
xmlChar *
xmlSplitQName(xmlParserCtxtPtr ctxt, const xmlChar *name, xmlChar **prefixOut) {
xmlChar buf[XML_MAX_NAMELEN + 5];
xmlChar *buffer = NULL;
int len = 0;
int max = XML_MAX_NAMELEN;
xmlChar *ret = NULL;
xmlChar *prefix;
const xmlChar *cur = name;
int c;
if (prefixOut == NULL) return(NULL);
*prefixOut = NULL;
if (cur == NULL) return(NULL);
/* nasty but well=formed */
if (cur[0] == ':')
return(xmlStrdup(name));
c = *cur++;
while ((c != 0) && (c != ':') && (len < max)) { /* tested bigname.xml */
buf[len++] = c;
c = *cur++;
}
if (len >= max) {
/*
* Okay someone managed to make a huge name, so he's ready to pay
* for the processing speed.
*/
max = len * 2;
buffer = (xmlChar *) xmlMallocAtomic(max);
if (buffer == NULL) {
xmlErrMemory(ctxt);
return(NULL);
}
memcpy(buffer, buf, len);
while ((c != 0) && (c != ':')) { /* tested bigname.xml */
if (len + 10 > max) {
xmlChar *tmp;
max *= 2;
tmp = (xmlChar *) xmlRealloc(buffer, max);
if (tmp == NULL) {
xmlFree(buffer);
xmlErrMemory(ctxt);
return(NULL);
}
buffer = tmp;
}
buffer[len++] = c;
c = *cur++;
}
buffer[len] = 0;
}
if ((c == ':') && (*cur == 0)) {
if (buffer != NULL)
xmlFree(buffer);
return(xmlStrdup(name));
}
if (buffer == NULL) {
ret = xmlStrndup(buf, len);
if (ret == NULL) {
xmlErrMemory(ctxt);
return(NULL);
}
} else {
ret = buffer;
buffer = NULL;
max = XML_MAX_NAMELEN;
}
if (c == ':') {
c = *cur;
prefix = ret;
if (c == 0) {
ret = xmlStrndup(BAD_CAST "", 0);
if (ret == NULL) {
xmlFree(prefix);
return(NULL);
}
*prefixOut = prefix;
return(ret);
}
len = 0;
/*
* Check that the first character is proper to start
* a new name
*/
if (!(((c >= 0x61) && (c <= 0x7A)) ||
((c >= 0x41) && (c <= 0x5A)) ||
(c == '_') || (c == ':'))) {
int l;
int first = CUR_SCHAR(cur, l);
if (!IS_LETTER(first) && (first != '_')) {
xmlFatalErrMsgStr(ctxt, XML_NS_ERR_QNAME,
"Name %s is not XML Namespace compliant\n",
name);
}
}
cur++;
while ((c != 0) && (len < max)) { /* tested bigname2.xml */
buf[len++] = c;
c = *cur++;
}
if (len >= max) {
/*
* Okay someone managed to make a huge name, so he's ready to pay
* for the processing speed.
*/
max = len * 2;
buffer = (xmlChar *) xmlMallocAtomic(max);
if (buffer == NULL) {
xmlErrMemory(ctxt);
xmlFree(prefix);
return(NULL);
}
memcpy(buffer, buf, len);
while (c != 0) { /* tested bigname2.xml */
if (len + 10 > max) {
xmlChar *tmp;
max *= 2;
tmp = (xmlChar *) xmlRealloc(buffer, max);
if (tmp == NULL) {
xmlErrMemory(ctxt);
xmlFree(prefix);
xmlFree(buffer);
return(NULL);
}
buffer = tmp;
}
buffer[len++] = c;
c = *cur++;
}
buffer[len] = 0;
}
if (buffer == NULL) {
ret = xmlStrndup(buf, len);
if (ret == NULL) {
xmlFree(prefix);
return(NULL);
}
} else {
ret = buffer;
}
*prefixOut = prefix;
}
return(ret);
}
/************************************************************************
* *
* The parser itself *
* Relates to http://www.w3.org/TR/REC-xml *
* *
************************************************************************/
/************************************************************************
* *
* Routines to parse Name, NCName and NmToken *
* *
************************************************************************/
/*
* The two following functions are related to the change of accepted
* characters for Name and NmToken in the Revision 5 of XML-1.0
* They correspond to the modified production [4] and the new production [4a]
* changes in that revision. Also note that the macros used for the
* productions Letter, Digit, CombiningChar and Extender are not needed
* anymore.
* We still keep compatibility to pre-revision5 parsing semantic if the
* new XML_PARSE_OLD10 option is given to the parser.
*/
static int
xmlIsNameStartChar(xmlParserCtxtPtr ctxt, int c) {
if ((ctxt->options & XML_PARSE_OLD10) == 0) {
/*
* Use the new checks of production [4] [4a] amd [5] of the
* Update 5 of XML-1.0
*/
if ((c != ' ') && (c != '>') && (c != '/') && /* accelerators */
(((c >= 'a') && (c <= 'z')) ||
((c >= 'A') && (c <= 'Z')) ||
(c == '_') || (c == ':') ||
((c >= 0xC0) && (c <= 0xD6)) ||
((c >= 0xD8) && (c <= 0xF6)) ||
((c >= 0xF8) && (c <= 0x2FF)) ||
((c >= 0x370) && (c <= 0x37D)) ||
((c >= 0x37F) && (c <= 0x1FFF)) ||
((c >= 0x200C) && (c <= 0x200D)) ||
((c >= 0x2070) && (c <= 0x218F)) ||
((c >= 0x2C00) && (c <= 0x2FEF)) ||
((c >= 0x3001) && (c <= 0xD7FF)) ||
((c >= 0xF900) && (c <= 0xFDCF)) ||
((c >= 0xFDF0) && (c <= 0xFFFD)) ||
((c >= 0x10000) && (c <= 0xEFFFF))))
return(1);
} else {
if (IS_LETTER(c) || (c == '_') || (c == ':'))
return(1);
}
return(0);
}
static int
xmlIsNameChar(xmlParserCtxtPtr ctxt, int c) {
if ((ctxt->options & XML_PARSE_OLD10) == 0) {
/*
* Use the new checks of production [4] [4a] amd [5] of the
* Update 5 of XML-1.0
*/
if ((c != ' ') && (c != '>') && (c != '/') && /* accelerators */
(((c >= 'a') && (c <= 'z')) ||
((c >= 'A') && (c <= 'Z')) ||
((c >= '0') && (c <= '9')) || /* !start */
(c == '_') || (c == ':') ||
(c == '-') || (c == '.') || (c == 0xB7) || /* !start */
((c >= 0xC0) && (c <= 0xD6)) ||
((c >= 0xD8) && (c <= 0xF6)) ||
((c >= 0xF8) && (c <= 0x2FF)) ||
((c >= 0x300) && (c <= 0x36F)) || /* !start */
((c >= 0x370) && (c <= 0x37D)) ||
((c >= 0x37F) && (c <= 0x1FFF)) ||
((c >= 0x200C) && (c <= 0x200D)) ||
((c >= 0x203F) && (c <= 0x2040)) || /* !start */
((c >= 0x2070) && (c <= 0x218F)) ||
((c >= 0x2C00) && (c <= 0x2FEF)) ||
((c >= 0x3001) && (c <= 0xD7FF)) ||
((c >= 0xF900) && (c <= 0xFDCF)) ||
((c >= 0xFDF0) && (c <= 0xFFFD)) ||
((c >= 0x10000) && (c <= 0xEFFFF))))
return(1);
} else {
if ((IS_LETTER(c)) || (IS_DIGIT(c)) ||
(c == '.') || (c == '-') ||
(c == '_') || (c == ':') ||
(IS_COMBINING(c)) ||
(IS_EXTENDER(c)))
return(1);
}
return(0);
}
static const xmlChar *
xmlParseNameComplex(xmlParserCtxtPtr ctxt) {
const xmlChar *ret;
int len = 0, l;
int c;
int maxLength = (ctxt->options & XML_PARSE_HUGE) ?
XML_MAX_TEXT_LENGTH :
XML_MAX_NAME_LENGTH;
/*
* Handler for more complex cases
*/
c = CUR_CHAR(l);
if ((ctxt->options & XML_PARSE_OLD10) == 0) {
/*
* Use the new checks of production [4] [4a] amd [5] of the
* Update 5 of XML-1.0
*/
if ((c == ' ') || (c == '>') || (c == '/') || /* accelerators */
(!(((c >= 'a') && (c <= 'z')) ||
((c >= 'A') && (c <= 'Z')) ||
(c == '_') || (c == ':') ||
((c >= 0xC0) && (c <= 0xD6)) ||
((c >= 0xD8) && (c <= 0xF6)) ||
((c >= 0xF8) && (c <= 0x2FF)) ||
((c >= 0x370) && (c <= 0x37D)) ||
((c >= 0x37F) && (c <= 0x1FFF)) ||
((c >= 0x200C) && (c <= 0x200D)) ||
((c >= 0x2070) && (c <= 0x218F)) ||
((c >= 0x2C00) && (c <= 0x2FEF)) ||
((c >= 0x3001) && (c <= 0xD7FF)) ||
((c >= 0xF900) && (c <= 0xFDCF)) ||
((c >= 0xFDF0) && (c <= 0xFFFD)) ||
((c >= 0x10000) && (c <= 0xEFFFF))))) {
return(NULL);
}
len += l;
NEXTL(l);
c = CUR_CHAR(l);
while ((c != ' ') && (c != '>') && (c != '/') && /* accelerators */
(((c >= 'a') && (c <= 'z')) ||
((c >= 'A') && (c <= 'Z')) ||
((c >= '0') && (c <= '9')) || /* !start */
(c == '_') || (c == ':') ||
(c == '-') || (c == '.') || (c == 0xB7) || /* !start */
((c >= 0xC0) && (c <= 0xD6)) ||
((c >= 0xD8) && (c <= 0xF6)) ||
((c >= 0xF8) && (c <= 0x2FF)) ||
((c >= 0x300) && (c <= 0x36F)) || /* !start */
((c >= 0x370) && (c <= 0x37D)) ||
((c >= 0x37F) && (c <= 0x1FFF)) ||
((c >= 0x200C) && (c <= 0x200D)) ||
((c >= 0x203F) && (c <= 0x2040)) || /* !start */
((c >= 0x2070) && (c <= 0x218F)) ||
((c >= 0x2C00) && (c <= 0x2FEF)) ||
((c >= 0x3001) && (c <= 0xD7FF)) ||
((c >= 0xF900) && (c <= 0xFDCF)) ||
((c >= 0xFDF0) && (c <= 0xFFFD)) ||
((c >= 0x10000) && (c <= 0xEFFFF))
)) {
if (len <= INT_MAX - l)
len += l;
NEXTL(l);
c = CUR_CHAR(l);
}
} else {
if ((c == ' ') || (c == '>') || (c == '/') || /* accelerators */
(!IS_LETTER(c) && (c != '_') &&
(c != ':'))) {
return(NULL);
}
len += l;
NEXTL(l);
c = CUR_CHAR(l);
while ((c != ' ') && (c != '>') && (c != '/') && /* test bigname.xml */
((IS_LETTER(c)) || (IS_DIGIT(c)) ||
(c == '.') || (c == '-') ||
(c == '_') || (c == ':') ||
(IS_COMBINING(c)) ||
(IS_EXTENDER(c)))) {
if (len <= INT_MAX - l)
len += l;
NEXTL(l);
c = CUR_CHAR(l);
}
}
if (len > maxLength) {
xmlFatalErr(ctxt, XML_ERR_NAME_TOO_LONG, "Name");
return(NULL);
}
if (ctxt->input->cur - ctxt->input->base < len) {
/*
* There were a couple of bugs where PERefs lead to to a change
* of the buffer. Check the buffer size to avoid passing an invalid
* pointer to xmlDictLookup.
*/
xmlFatalErr(ctxt, XML_ERR_INTERNAL_ERROR,
"unexpected change of input buffer");
return (NULL);
}
if ((*ctxt->input->cur == '\n') && (ctxt->input->cur[-1] == '\r'))
ret = xmlDictLookup(ctxt->dict, ctxt->input->cur - (len + 1), len);
else
ret = xmlDictLookup(ctxt->dict, ctxt->input->cur - len, len);
if (ret == NULL)
xmlErrMemory(ctxt);
return(ret);
}
/**
* xmlParseName:
* @ctxt: an XML parser context
*
* DEPRECATED: Internal function, don't use.
*
* parse an XML name.
*
* [4] NameChar ::= Letter | Digit | '.' | '-' | '_' | ':' |
* CombiningChar | Extender
*
* [5] Name ::= (Letter | '_' | ':') (NameChar)*
*
* [6] Names ::= Name (#x20 Name)*
*
* Returns the Name parsed or NULL
*/
const xmlChar *
xmlParseName(xmlParserCtxtPtr ctxt) {
const xmlChar *in;
const xmlChar *ret;
size_t count = 0;
size_t maxLength = (ctxt->options & XML_PARSE_HUGE) ?
XML_MAX_TEXT_LENGTH :
XML_MAX_NAME_LENGTH;
GROW;
/*
* Accelerator for simple ASCII names
*/
in = ctxt->input->cur;
if (((*in >= 0x61) && (*in <= 0x7A)) ||
((*in >= 0x41) && (*in <= 0x5A)) ||
(*in == '_') || (*in == ':')) {
in++;
while (((*in >= 0x61) && (*in <= 0x7A)) ||
((*in >= 0x41) && (*in <= 0x5A)) ||
((*in >= 0x30) && (*in <= 0x39)) ||
(*in == '_') || (*in == '-') ||
(*in == ':') || (*in == '.'))
in++;
if ((*in > 0) && (*in < 0x80)) {
count = in - ctxt->input->cur;
if (count > maxLength) {
xmlFatalErr(ctxt, XML_ERR_NAME_TOO_LONG, "Name");
return(NULL);
}
ret = xmlDictLookup(ctxt->dict, ctxt->input->cur, count);
ctxt->input->cur = in;
ctxt->input->col += count;
if (ret == NULL)
xmlErrMemory(ctxt);
return(ret);
}
}
/* accelerator for special cases */
return(xmlParseNameComplex(ctxt));
}
static xmlHashedString
xmlParseNCNameComplex(xmlParserCtxtPtr ctxt) {
xmlHashedString ret;
int len = 0, l;
int c;
int maxLength = (ctxt->options & XML_PARSE_HUGE) ?
XML_MAX_TEXT_LENGTH :
XML_MAX_NAME_LENGTH;
size_t startPosition = 0;
ret.name = NULL;
ret.hashValue = 0;
/*
* Handler for more complex cases
*/
startPosition = CUR_PTR - BASE_PTR;
c = CUR_CHAR(l);
if ((c == ' ') || (c == '>') || (c == '/') || /* accelerators */
(!xmlIsNameStartChar(ctxt, c) || (c == ':'))) {
return(ret);
}
while ((c != ' ') && (c != '>') && (c != '/') && /* test bigname.xml */
(xmlIsNameChar(ctxt, c) && (c != ':'))) {
if (len <= INT_MAX - l)
len += l;
NEXTL(l);
c = CUR_CHAR(l);
}
if (len > maxLength) {
xmlFatalErr(ctxt, XML_ERR_NAME_TOO_LONG, "NCName");
return(ret);
}
ret = xmlDictLookupHashed(ctxt->dict, (BASE_PTR + startPosition), len);
if (ret.name == NULL)
xmlErrMemory(ctxt);
return(ret);
}
/**
* xmlParseNCName:
* @ctxt: an XML parser context
* @len: length of the string parsed
*
* parse an XML name.
*
* [4NS] NCNameChar ::= Letter | Digit | '.' | '-' | '_' |
* CombiningChar | Extender
*
* [5NS] NCName ::= (Letter | '_') (NCNameChar)*
*
* Returns the Name parsed or NULL
*/
static xmlHashedString
xmlParseNCName(xmlParserCtxtPtr ctxt) {
const xmlChar *in, *e;
xmlHashedString ret;
size_t count = 0;
size_t maxLength = (ctxt->options & XML_PARSE_HUGE) ?
XML_MAX_TEXT_LENGTH :
XML_MAX_NAME_LENGTH;
ret.name = NULL;
/*
* Accelerator for simple ASCII names
*/
in = ctxt->input->cur;
e = ctxt->input->end;
if ((((*in >= 0x61) && (*in <= 0x7A)) ||
((*in >= 0x41) && (*in <= 0x5A)) ||
(*in == '_')) && (in < e)) {
in++;
while ((((*in >= 0x61) && (*in <= 0x7A)) ||
((*in >= 0x41) && (*in <= 0x5A)) ||
((*in >= 0x30) && (*in <= 0x39)) ||
(*in == '_') || (*in == '-') ||
(*in == '.')) && (in < e))
in++;
if (in >= e)
goto complex;
if ((*in > 0) && (*in < 0x80)) {
count = in - ctxt->input->cur;
if (count > maxLength) {
xmlFatalErr(ctxt, XML_ERR_NAME_TOO_LONG, "NCName");
return(ret);
}
ret = xmlDictLookupHashed(ctxt->dict, ctxt->input->cur, count);
ctxt->input->cur = in;
ctxt->input->col += count;
if (ret.name == NULL) {
xmlErrMemory(ctxt);
}
return(ret);
}
}
complex:
return(xmlParseNCNameComplex(ctxt));
}
/**
* xmlParseNameAndCompare:
* @ctxt: an XML parser context
*
* parse an XML name and compares for match
* (specialized for endtag parsing)
*
* Returns NULL for an illegal name, (xmlChar*) 1 for success
* and the name for mismatch
*/
static const xmlChar *
xmlParseNameAndCompare(xmlParserCtxtPtr ctxt, xmlChar const *other) {
register const xmlChar *cmp = other;
register const xmlChar *in;
const xmlChar *ret;
GROW;
in = ctxt->input->cur;
while (*in != 0 && *in == *cmp) {
++in;
++cmp;
}
if (*cmp == 0 && (*in == '>' || IS_BLANK_CH (*in))) {
/* success */
ctxt->input->col += in - ctxt->input->cur;
ctxt->input->cur = in;
return (const xmlChar*) 1;
}
/* failure (or end of input buffer), check with full function */
ret = xmlParseName (ctxt);
/* strings coming from the dictionary direct compare possible */
if (ret == other) {
return (const xmlChar*) 1;
}
return ret;
}
/**
* xmlParseStringName:
* @ctxt: an XML parser context
* @str: a pointer to the string pointer (IN/OUT)
*
* parse an XML name.
*
* [4] NameChar ::= Letter | Digit | '.' | '-' | '_' | ':' |
* CombiningChar | Extender
*
* [5] Name ::= (Letter | '_' | ':') (NameChar)*
*
* [6] Names ::= Name (#x20 Name)*
*
* Returns the Name parsed or NULL. The @str pointer
* is updated to the current location in the string.
*/
static xmlChar *
xmlParseStringName(xmlParserCtxtPtr ctxt, const xmlChar** str) {
xmlChar buf[XML_MAX_NAMELEN + 5];
xmlChar *ret;
const xmlChar *cur = *str;
int len = 0, l;
int c;
int maxLength = (ctxt->options & XML_PARSE_HUGE) ?
XML_MAX_TEXT_LENGTH :
XML_MAX_NAME_LENGTH;
c = CUR_SCHAR(cur, l);
if (!xmlIsNameStartChar(ctxt, c)) {
return(NULL);
}
COPY_BUF(buf, len, c);
cur += l;
c = CUR_SCHAR(cur, l);
while (xmlIsNameChar(ctxt, c)) {
COPY_BUF(buf, len, c);
cur += l;
c = CUR_SCHAR(cur, l);
if (len >= XML_MAX_NAMELEN) { /* test bigentname.xml */
/*
* Okay someone managed to make a huge name, so he's ready to pay
* for the processing speed.
*/
xmlChar *buffer;
int max = len * 2;
buffer = (xmlChar *) xmlMallocAtomic(max);
if (buffer == NULL) {
xmlErrMemory(ctxt);
return(NULL);
}
memcpy(buffer, buf, len);
while (xmlIsNameChar(ctxt, c)) {
if (len + 10 > max) {
xmlChar *tmp;
max *= 2;
tmp = (xmlChar *) xmlRealloc(buffer, max);
if (tmp == NULL) {
xmlErrMemory(ctxt);
xmlFree(buffer);
return(NULL);
}
buffer = tmp;
}
COPY_BUF(buffer, len, c);
cur += l;
c = CUR_SCHAR(cur, l);
if (len > maxLength) {
xmlFatalErr(ctxt, XML_ERR_NAME_TOO_LONG, "NCName");
xmlFree(buffer);
return(NULL);
}
}
buffer[len] = 0;
*str = cur;
return(buffer);
}
}
if (len > maxLength) {
xmlFatalErr(ctxt, XML_ERR_NAME_TOO_LONG, "NCName");
return(NULL);
}
*str = cur;
ret = xmlStrndup(buf, len);
if (ret == NULL)
xmlErrMemory(ctxt);
return(ret);
}
/**
* xmlParseNmtoken:
* @ctxt: an XML parser context
*
* DEPRECATED: Internal function, don't use.
*
* parse an XML Nmtoken.
*
* [7] Nmtoken ::= (NameChar)+
*
* [8] Nmtokens ::= Nmtoken (#x20 Nmtoken)*
*
* Returns the Nmtoken parsed or NULL
*/
xmlChar *
xmlParseNmtoken(xmlParserCtxtPtr ctxt) {
xmlChar buf[XML_MAX_NAMELEN + 5];
xmlChar *ret;
int len = 0, l;
int c;
int maxLength = (ctxt->options & XML_PARSE_HUGE) ?
XML_MAX_TEXT_LENGTH :
XML_MAX_NAME_LENGTH;
c = CUR_CHAR(l);
while (xmlIsNameChar(ctxt, c)) {
COPY_BUF(buf, len, c);
NEXTL(l);
c = CUR_CHAR(l);
if (len >= XML_MAX_NAMELEN) {
/*
* Okay someone managed to make a huge token, so he's ready to pay
* for the processing speed.
*/
xmlChar *buffer;
int max = len * 2;
buffer = (xmlChar *) xmlMallocAtomic(max);
if (buffer == NULL) {
xmlErrMemory(ctxt);
return(NULL);
}
memcpy(buffer, buf, len);
while (xmlIsNameChar(ctxt, c)) {
if (len + 10 > max) {
xmlChar *tmp;
max *= 2;
tmp = (xmlChar *) xmlRealloc(buffer, max);
if (tmp == NULL) {
xmlErrMemory(ctxt);
xmlFree(buffer);
return(NULL);
}
buffer = tmp;
}
COPY_BUF(buffer, len, c);
if (len > maxLength) {
xmlFatalErr(ctxt, XML_ERR_NAME_TOO_LONG, "NmToken");
xmlFree(buffer);
return(NULL);
}
NEXTL(l);
c = CUR_CHAR(l);
}
buffer[len] = 0;
return(buffer);
}
}
if (len == 0)
return(NULL);
if (len > maxLength) {
xmlFatalErr(ctxt, XML_ERR_NAME_TOO_LONG, "NmToken");
return(NULL);
}
ret = xmlStrndup(buf, len);
if (ret == NULL)
xmlErrMemory(ctxt);
return(ret);
}
/**
* xmlExpandPEsInEntityValue:
* @ctxt: parser context
* @buf: string buffer
* @str: entity value
* @length: size of entity value
* @depth: nesting depth
*
* Validate an entity value and expand parameter entities.
*/
static void
xmlExpandPEsInEntityValue(xmlParserCtxtPtr ctxt, xmlSBuf *buf,
const xmlChar *str, int length, int depth) {
int maxDepth = (ctxt->options & XML_PARSE_HUGE) ? 40 : 20;
const xmlChar *end, *chunk;
int c, l;
if (str == NULL)
return;
depth += 1;
if (depth > maxDepth) {
xmlFatalErrMsg(ctxt, XML_ERR_RESOURCE_LIMIT,
"Maximum entity nesting depth exceeded");
return;
}
end = str + length;
chunk = str;
while ((str < end) && (!PARSER_STOPPED(ctxt))) {
c = *str;
if (c >= 0x80) {
l = xmlUTF8MultibyteLen(ctxt, str,
"invalid character in entity value\n");
if (l == 0) {
if (chunk < str)
xmlSBufAddString(buf, chunk, str - chunk);
xmlSBufAddReplChar(buf);
str += 1;
chunk = str;
} else {
str += l;
}
} else if (c == '&') {
if (str[1] == '#') {
if (chunk < str)
xmlSBufAddString(buf, chunk, str - chunk);
c = xmlParseStringCharRef(ctxt, &str);
if (c == 0)
return;
xmlSBufAddChar(buf, c);
chunk = str;
} else {
xmlChar *name;
/*
* General entity references are checked for
* syntactic validity.
*/
str++;
name = xmlParseStringName(ctxt, &str);
if ((name == NULL) || (*str++ != ';')) {
xmlFatalErrMsg(ctxt, XML_ERR_ENTITY_CHAR_ERROR,
"EntityValue: '&' forbidden except for entities "
"references\n");
xmlFree(name);
return;
}
xmlFree(name);
}
} else if (c == '%') {
xmlEntityPtr ent;
if (chunk < str)
xmlSBufAddString(buf, chunk, str - chunk);
ent = xmlParseStringPEReference(ctxt, &str);
if (ent == NULL)
return;
if (!PARSER_EXTERNAL(ctxt)) {
xmlFatalErr(ctxt, XML_ERR_ENTITY_PE_INTERNAL, NULL);
return;
}
if (ent->content == NULL) {
/*
* Note: external parsed entities will not be loaded,
* it is not required for a non-validating parser to
* complete external PEReferences coming from the
* internal subset
*/
if (((ctxt->options & XML_PARSE_NO_XXE) == 0) &&
((ctxt->replaceEntities) ||
(ctxt->validate))) {
xmlLoadEntityContent(ctxt, ent);
} else {
xmlWarningMsg(ctxt, XML_ERR_ENTITY_PROCESSING,
"not validating will not read content for "
"PE entity %s\n", ent->name, NULL);
}
}
/*
* TODO: Skip if ent->content is still NULL.
*/
if (xmlParserEntityCheck(ctxt, ent->length))
return;
if (ent->flags & XML_ENT_EXPANDING) {
xmlFatalErr(ctxt, XML_ERR_ENTITY_LOOP, NULL);
xmlHaltParser(ctxt);
return;
}
ent->flags |= XML_ENT_EXPANDING;
xmlExpandPEsInEntityValue(ctxt, buf, ent->content, ent->length,
depth);
ent->flags &= ~XML_ENT_EXPANDING;
chunk = str;
} else {
/* Normal ASCII char */
if (!IS_BYTE_CHAR(c)) {
xmlFatalErrMsg(ctxt, XML_ERR_INVALID_CHAR,
"invalid character in entity value\n");
if (chunk < str)
xmlSBufAddString(buf, chunk, str - chunk);
xmlSBufAddReplChar(buf);
str += 1;
chunk = str;
} else {
str += 1;
}
}
}
if (chunk < str)
xmlSBufAddString(buf, chunk, str - chunk);
}
/**
* xmlParseEntityValue:
* @ctxt: an XML parser context
* @orig: if non-NULL store a copy of the original entity value
*
* DEPRECATED: Internal function, don't use.
*
* parse a value for ENTITY declarations
*
* [9] EntityValue ::= '"' ([^%&"] | PEReference | Reference)* '"' |
* "'" ([^%&'] | PEReference | Reference)* "'"
*
* Returns the EntityValue parsed with reference substituted or NULL
*/
xmlChar *
xmlParseEntityValue(xmlParserCtxtPtr ctxt, xmlChar **orig) {
unsigned maxLength = (ctxt->options & XML_PARSE_HUGE) ?
XML_MAX_HUGE_LENGTH :
XML_MAX_TEXT_LENGTH;
xmlSBuf buf;
const xmlChar *start;
int quote, length;
xmlSBufInit(&buf, maxLength);
GROW;
quote = CUR;
if ((quote != '"') && (quote != '\'')) {
xmlFatalErr(ctxt, XML_ERR_ATTRIBUTE_NOT_STARTED, NULL);
return(NULL);
}
CUR_PTR++;
length = 0;
/*
* Copy raw content of the entity into a buffer
*/
while (1) {
int c;
if (PARSER_STOPPED(ctxt))
goto error;
if (CUR_PTR >= ctxt->input->end) {
xmlFatalErrMsg(ctxt, XML_ERR_ENTITY_NOT_FINISHED, NULL);
goto error;
}
c = CUR;
if (c == 0) {
xmlFatalErrMsg(ctxt, XML_ERR_INVALID_CHAR,
"invalid character in entity value\n");
goto error;
}
if (c == quote)
break;
NEXTL(1);
length += 1;
/*
* TODO: Check growth threshold
*/
if (ctxt->input->end - CUR_PTR < 10)
GROW;
}
start = CUR_PTR - length;
if (orig != NULL) {
*orig = xmlStrndup(start, length);
if (*orig == NULL)
xmlErrMemory(ctxt);
}
xmlExpandPEsInEntityValue(ctxt, &buf, start, length, ctxt->inputNr);
NEXTL(1);
return(xmlSBufFinish(&buf, NULL, ctxt, "entity length too long"));
error:
xmlSBufCleanup(&buf, ctxt, "entity length too long");
return(NULL);
}
/**
* xmlCheckEntityInAttValue:
* @ctxt: parser context
* @pent: entity
* @depth: nesting depth
*
* Check an entity reference in an attribute value for validity
* without expanding it.
*/
static void
xmlCheckEntityInAttValue(xmlParserCtxtPtr ctxt, xmlEntityPtr pent, int depth) {
int maxDepth = (ctxt->options & XML_PARSE_HUGE) ? 40 : 20;
const xmlChar *str;
unsigned long expandedSize = pent->length;
int c, flags;
depth += 1;
if (depth > maxDepth) {
xmlFatalErrMsg(ctxt, XML_ERR_RESOURCE_LIMIT,
"Maximum entity nesting depth exceeded");
return;
}
if (pent->flags & XML_ENT_EXPANDING) {
xmlFatalErr(ctxt, XML_ERR_ENTITY_LOOP, NULL);
xmlHaltParser(ctxt);
return;
}
/*
* If we're parsing a default attribute value in DTD content,
* the entity might reference other entities which weren't
* defined yet, so the check isn't reliable.
*/
if (ctxt->inSubset == 0)
flags = XML_ENT_CHECKED | XML_ENT_VALIDATED;
else
flags = XML_ENT_VALIDATED;
str = pent->content;
if (str == NULL)
goto done;
/*
* Note that entity values are already validated. We only check
* for illegal less-than signs and compute the expanded size
* of the entity. No special handling for multi-byte characters
* is needed.
*/
while (!PARSER_STOPPED(ctxt)) {
c = *str;
if (c != '&') {
if (c == 0)
break;
if (c == '<')
xmlFatalErrMsgStr(ctxt, XML_ERR_LT_IN_ATTRIBUTE,
"'<' in entity '%s' is not allowed in attributes "
"values\n", pent->name);
str += 1;
} else if (str[1] == '#') {
int val;
val = xmlParseStringCharRef(ctxt, &str);
if (val == 0) {
pent->content[0] = 0;
break;
}
} else {
xmlChar *name;
xmlEntityPtr ent;
name = xmlParseStringEntityRef(ctxt, &str);
if (name == NULL) {
pent->content[0] = 0;
break;
}
ent = xmlLookupGeneralEntity(ctxt, name, /* inAttr */ 1);
xmlFree(name);
if ((ent != NULL) &&
(ent->etype != XML_INTERNAL_PREDEFINED_ENTITY)) {
if ((ent->flags & flags) != flags) {
pent->flags |= XML_ENT_EXPANDING;
xmlCheckEntityInAttValue(ctxt, ent, depth);
pent->flags &= ~XML_ENT_EXPANDING;
}
xmlSaturatedAdd(&expandedSize, ent->expandedSize);
xmlSaturatedAdd(&expandedSize, XML_ENT_FIXED_COST);
}
}
}
done:
if (ctxt->inSubset == 0)
pent->expandedSize = expandedSize;
pent->flags |= flags;
}
/**
* xmlExpandEntityInAttValue:
* @ctxt: parser context
* @buf: string buffer
* @str: entity or attribute value
* @pent: entity for entity value, NULL for attribute values
* @normalize: whether to collapse whitespace
* @inSpace: whitespace state
* @depth: nesting depth
* @check: whether to check for amplification
*
* Expand general entity references in an entity or attribute value.
* Perform attribute value normalization.
*/
static void
xmlExpandEntityInAttValue(xmlParserCtxtPtr ctxt, xmlSBuf *buf,
const xmlChar *str, xmlEntityPtr pent, int normalize,
int *inSpace, int depth, int check) {
int maxDepth = (ctxt->options & XML_PARSE_HUGE) ? 40 : 20;
int c, chunkSize;
if (str == NULL)
return;
depth += 1;
if (depth > maxDepth) {
xmlFatalErrMsg(ctxt, XML_ERR_RESOURCE_LIMIT,
"Maximum entity nesting depth exceeded");
return;
}
if (pent != NULL) {
if (pent->flags & XML_ENT_EXPANDING) {
xmlFatalErr(ctxt, XML_ERR_ENTITY_LOOP, NULL);
xmlHaltParser(ctxt);
return;
}
if (check) {
if (xmlParserEntityCheck(ctxt, pent->length))
return;
}
}
chunkSize = 0;
/*
* Note that entity values are already validated. No special
* handling for multi-byte characters is needed.
*/
while (!PARSER_STOPPED(ctxt)) {
c = *str;
if (c != '&') {
if (c == 0)
break;
/*
* If this function is called without an entity, it is used to
* expand entities in an attribute content where less-than was
* already unscaped and is allowed.
*/
if ((pent != NULL) && (c == '<')) {
xmlFatalErrMsgStr(ctxt, XML_ERR_LT_IN_ATTRIBUTE,
"'<' in entity '%s' is not allowed in attributes "
"values\n", pent->name);
break;
}
if (c <= 0x20) {
if ((normalize) && (*inSpace)) {
/* Skip char */
if (chunkSize > 0) {
xmlSBufAddString(buf, str - chunkSize, chunkSize);
chunkSize = 0;
}
} else if (c < 0x20) {
if (chunkSize > 0) {
xmlSBufAddString(buf, str - chunkSize, chunkSize);
chunkSize = 0;
}
xmlSBufAddCString(buf, " ", 1);
} else {
chunkSize += 1;
}
*inSpace = 1;
} else {
chunkSize += 1;
*inSpace = 0;
}
str += 1;
} else if (str[1] == '#') {
int val;
if (chunkSize > 0) {
xmlSBufAddString(buf, str - chunkSize, chunkSize);
chunkSize = 0;
}
val = xmlParseStringCharRef(ctxt, &str);
if (val == 0) {
if (pent != NULL)
pent->content[0] = 0;
break;
}
if (val == ' ') {
if ((!normalize) || (!*inSpace))
xmlSBufAddCString(buf, " ", 1);
*inSpace = 1;
} else {
xmlSBufAddChar(buf, val);
*inSpace = 0;
}
} else {
xmlChar *name;
xmlEntityPtr ent;
if (chunkSize > 0) {
xmlSBufAddString(buf, str - chunkSize, chunkSize);
chunkSize = 0;
}
name = xmlParseStringEntityRef(ctxt, &str);
if (name == NULL) {
if (pent != NULL)
pent->content[0] = 0;
break;
}
ent = xmlLookupGeneralEntity(ctxt, name, /* inAttr */ 1);
xmlFree(name);
if ((ent != NULL) &&
(ent->etype == XML_INTERNAL_PREDEFINED_ENTITY)) {
if (ent->content == NULL) {
xmlFatalErrMsg(ctxt, XML_ERR_INTERNAL_ERROR,
"predefined entity has no content\n");
break;
}
xmlSBufAddString(buf, ent->content, ent->length);
*inSpace = 0;
} else if ((ent != NULL) && (ent->content != NULL)) {
if (pent != NULL)
pent->flags |= XML_ENT_EXPANDING;
xmlExpandEntityInAttValue(ctxt, buf, ent->content, ent,
normalize, inSpace, depth, check);
if (pent != NULL)
pent->flags &= ~XML_ENT_EXPANDING;
}
}
}
if (chunkSize > 0)
xmlSBufAddString(buf, str - chunkSize, chunkSize);
}
/**
* xmlExpandEntitiesInAttValue:
* @ctxt: parser context
* @str: entity or attribute value
* @normalize: whether to collapse whitespace
*
* Expand general entity references in an entity or attribute value.
* Perform attribute value normalization.
*
* Returns the expanded attribtue value.
*/
xmlChar *
xmlExpandEntitiesInAttValue(xmlParserCtxtPtr ctxt, const xmlChar *str,
int normalize) {
unsigned maxLength = (ctxt->options & XML_PARSE_HUGE) ?
XML_MAX_HUGE_LENGTH :
XML_MAX_TEXT_LENGTH;
xmlSBuf buf;
int inSpace = 1;
xmlSBufInit(&buf, maxLength);
xmlExpandEntityInAttValue(ctxt, &buf, str, NULL, normalize, &inSpace,
ctxt->inputNr, /* check */ 0);
if ((normalize) && (inSpace) && (buf.size > 0))
buf.size--;
return(xmlSBufFinish(&buf, NULL, ctxt, "AttValue length too long"));
}
/**
* xmlParseAttValueInternal:
* @ctxt: an XML parser context
* @len: attribute len result
* @alloc: whether the attribute was reallocated as a new string
* @normalize: if 1 then further non-CDATA normalization must be done
*
* parse a value for an attribute.
* NOTE: if no normalization is needed, the routine will return pointers
* directly from the data buffer.
*
* 3.3.3 Attribute-Value Normalization:
* Before the value of an attribute is passed to the application or
* checked for validity, the XML processor must normalize it as follows:
* - a character reference is processed by appending the referenced
* character to the attribute value
* - an entity reference is processed by recursively processing the
* replacement text of the entity
* - a whitespace character (#x20, #xD, #xA, #x9) is processed by
* appending #x20 to the normalized value, except that only a single
* #x20 is appended for a "#xD#xA" sequence that is part of an external
* parsed entity or the literal entity value of an internal parsed entity
* - other characters are processed by appending them to the normalized value
* If the declared value is not CDATA, then the XML processor must further
* process the normalized attribute value by discarding any leading and
* trailing space (#x20) characters, and by replacing sequences of space
* (#x20) characters by a single space (#x20) character.
* All attributes for which no declaration has been read should be treated
* by a non-validating parser as if declared CDATA.
*
* Returns the AttValue parsed or NULL. The value has to be freed by the
* caller if it was copied, this can be detected by val[*len] == 0.
*/
static xmlChar *
xmlParseAttValueInternal(xmlParserCtxtPtr ctxt, int *attlen, int *alloc,
int normalize, int isNamespace) {
unsigned maxLength = (ctxt->options & XML_PARSE_HUGE) ?
XML_MAX_HUGE_LENGTH :
XML_MAX_TEXT_LENGTH;
xmlSBuf buf;
xmlChar *ret;
int c, l, quote, flags, chunkSize;
int inSpace = 1;
int replaceEntities;
/* Always expand namespace URIs */
replaceEntities = (ctxt->replaceEntities) || (isNamespace);
xmlSBufInit(&buf, maxLength);
GROW;
quote = CUR;
if ((quote != '"') && (quote != '\'')) {
xmlFatalErr(ctxt, XML_ERR_ATTRIBUTE_NOT_STARTED, NULL);
return(NULL);
}
NEXTL(1);
if (ctxt->inSubset == 0)
flags = XML_ENT_CHECKED | XML_ENT_VALIDATED;
else
flags = XML_ENT_VALIDATED;
inSpace = 1;
chunkSize = 0;
while (1) {
if (PARSER_STOPPED(ctxt))
goto error;
if (CUR_PTR >= ctxt->input->end) {
xmlFatalErrMsg(ctxt, XML_ERR_ATTRIBUTE_NOT_FINISHED,
"AttValue: ' expected\n");
goto error;
}
/*
* TODO: Check growth threshold
*/
if (ctxt->input->end - CUR_PTR < 10)
GROW;
c = CUR;
if (c >= 0x80) {
l = xmlUTF8MultibyteLen(ctxt, CUR_PTR,
"invalid character in attribute value\n");
if (l == 0) {
if (chunkSize > 0) {
xmlSBufAddString(&buf, CUR_PTR - chunkSize, chunkSize);
chunkSize = 0;
}
xmlSBufAddReplChar(&buf);
NEXTL(1);
} else {
chunkSize += l;
NEXTL(l);
}
inSpace = 0;
} else if (c != '&') {
if (c > 0x20) {
if (c == quote)
break;
if (c == '<')
xmlFatalErr(ctxt, XML_ERR_LT_IN_ATTRIBUTE, NULL);
chunkSize += 1;
inSpace = 0;
} else if (!IS_BYTE_CHAR(c)) {
xmlFatalErrMsg(ctxt, XML_ERR_INVALID_CHAR,
"invalid character in attribute value\n");
if (chunkSize > 0) {
xmlSBufAddString(&buf, CUR_PTR - chunkSize, chunkSize);
chunkSize = 0;
}
xmlSBufAddReplChar(&buf);
inSpace = 0;
} else {
/* Whitespace */
if ((normalize) && (inSpace)) {
/* Skip char */
if (chunkSize > 0) {
xmlSBufAddString(&buf, CUR_PTR - chunkSize, chunkSize);
chunkSize = 0;
}
} else if (c < 0x20) {
/* Convert to space */
if (chunkSize > 0) {
xmlSBufAddString(&buf, CUR_PTR - chunkSize, chunkSize);
chunkSize = 0;
}
xmlSBufAddCString(&buf, " ", 1);
} else {
chunkSize += 1;
}
inSpace = 1;
if ((c == 0xD) && (NXT(1) == 0xA))
CUR_PTR++;
}
NEXTL(1);
} else if (NXT(1) == '#') {
int val;
if (chunkSize > 0) {
xmlSBufAddString(&buf, CUR_PTR - chunkSize, chunkSize);
chunkSize = 0;
}
val = xmlParseCharRef(ctxt);
if (val == 0)
goto error;
if ((val == '&') && (!replaceEntities)) {
/*
* The reparsing will be done in xmlNodeParseContent()
* called from SAX2.c
*/
xmlSBufAddCString(&buf, "&#38;", 5);
inSpace = 0;
} else if (val == ' ') {
if ((!normalize) || (!inSpace))
xmlSBufAddCString(&buf, " ", 1);
inSpace = 1;
} else {
xmlSBufAddChar(&buf, val);
inSpace = 0;
}
} else {
const xmlChar *name;
xmlEntityPtr ent;
if (chunkSize > 0) {
xmlSBufAddString(&buf, CUR_PTR - chunkSize, chunkSize);
chunkSize = 0;
}
name = xmlParseEntityRefInternal(ctxt);
if (name == NULL) {
/*
* Probably a literal '&' which wasn't escaped.
* TODO: Handle gracefully in recovery mode.
*/
continue;
}
ent = xmlLookupGeneralEntity(ctxt, name, /* isAttr */ 1);
if (ent == NULL)
continue;
if (ent->etype == XML_INTERNAL_PREDEFINED_ENTITY) {
if ((ent->content[0] == '&') && (!replaceEntities))
xmlSBufAddCString(&buf, "&#38;", 5);
else
xmlSBufAddString(&buf, ent->content, ent->length);
inSpace = 0;
} else if (replaceEntities) {
xmlExpandEntityInAttValue(ctxt, &buf, ent->content, ent,
normalize, &inSpace, ctxt->inputNr,
/* check */ 1);
} else {
if ((ent->flags & flags) != flags)
xmlCheckEntityInAttValue(ctxt, ent, ctxt->inputNr);
if (xmlParserEntityCheck(ctxt, ent->expandedSize)) {
ent->content[0] = 0;
goto error;
}
/*
* Just output the reference
*/
xmlSBufAddCString(&buf, "&", 1);
xmlSBufAddString(&buf, ent->name, xmlStrlen(ent->name));
xmlSBufAddCString(&buf, ";", 1);
inSpace = 0;
}
}
}
if ((buf.mem == NULL) && (alloc != NULL)) {
ret = (xmlChar *) CUR_PTR - chunkSize;
if (attlen != NULL)
*attlen = chunkSize;
if ((normalize) && (inSpace) && (chunkSize > 0))
*attlen -= 1;
*alloc = 0;
/* Report potential error */
xmlSBufCleanup(&buf, ctxt, "AttValue length too long");
} else {
if (chunkSize > 0)
xmlSBufAddString(&buf, CUR_PTR - chunkSize, chunkSize);
if ((normalize) && (inSpace) && (buf.size > 0))
buf.size--;
ret = xmlSBufFinish(&buf, attlen, ctxt, "AttValue length too long");
if (ret != NULL) {
if (attlen != NULL)
*attlen = buf.size;
if (alloc != NULL)
*alloc = 1;
}
}
NEXTL(1);
return(ret);
error:
xmlSBufCleanup(&buf, ctxt, "AttValue length too long");
return(NULL);
}
/**
* xmlParseAttValue:
* @ctxt: an XML parser context
*
* DEPRECATED: Internal function, don't use.
*
* parse a value for an attribute
* Note: the parser won't do substitution of entities here, this
* will be handled later in xmlStringGetNodeList
*
* [10] AttValue ::= '"' ([^<&"] | Reference)* '"' |
* "'" ([^<&'] | Reference)* "'"
*
* 3.3.3 Attribute-Value Normalization:
* Before the value of an attribute is passed to the application or
* checked for validity, the XML processor must normalize it as follows:
* - a character reference is processed by appending the referenced
* character to the attribute value
* - an entity reference is processed by recursively processing the
* replacement text of the entity
* - a whitespace character (#x20, #xD, #xA, #x9) is processed by
* appending #x20 to the normalized value, except that only a single
* #x20 is appended for a "#xD#xA" sequence that is part of an external
* parsed entity or the literal entity value of an internal parsed entity
* - other characters are processed by appending them to the normalized value
* If the declared value is not CDATA, then the XML processor must further
* process the normalized attribute value by discarding any leading and
* trailing space (#x20) characters, and by replacing sequences of space
* (#x20) characters by a single space (#x20) character.
* All attributes for which no declaration has been read should be treated
* by a non-validating parser as if declared CDATA.
*
* Returns the AttValue parsed or NULL. The value has to be freed by the caller.
*/
xmlChar *
xmlParseAttValue(xmlParserCtxtPtr ctxt) {
if ((ctxt == NULL) || (ctxt->input == NULL)) return(NULL);
return(xmlParseAttValueInternal(ctxt, NULL, NULL, 0, 0));
}
/**
* xmlParseSystemLiteral:
* @ctxt: an XML parser context
*
* DEPRECATED: Internal function, don't use.
*
* parse an XML Literal
*
* [11] SystemLiteral ::= ('"' [^"]* '"') | ("'" [^']* "'")
*
* Returns the SystemLiteral parsed or NULL
*/
xmlChar *
xmlParseSystemLiteral(xmlParserCtxtPtr ctxt) {
xmlChar *buf = NULL;
int len = 0;
int size = XML_PARSER_BUFFER_SIZE;
int cur, l;
int maxLength = (ctxt->options & XML_PARSE_HUGE) ?
XML_MAX_TEXT_LENGTH :
XML_MAX_NAME_LENGTH;
xmlChar stop;
if (RAW == '"') {
NEXT;
stop = '"';
} else if (RAW == '\'') {
NEXT;
stop = '\'';
} else {
xmlFatalErr(ctxt, XML_ERR_LITERAL_NOT_STARTED, NULL);
return(NULL);
}
buf = (xmlChar *) xmlMallocAtomic(size);
if (buf == NULL) {
xmlErrMemory(ctxt);
return(NULL);
}
cur = CUR_CHAR(l);
while ((IS_CHAR(cur)) && (cur != stop)) { /* checked */
if (len + 5 >= size) {
xmlChar *tmp;
size *= 2;
tmp = (xmlChar *) xmlRealloc(buf, size);
if (tmp == NULL) {
xmlFree(buf);
xmlErrMemory(ctxt);
return(NULL);
}
buf = tmp;
}
COPY_BUF(buf, len, cur);
if (len > maxLength) {
xmlFatalErr(ctxt, XML_ERR_NAME_TOO_LONG, "SystemLiteral");
xmlFree(buf);
return(NULL);
}
NEXTL(l);
cur = CUR_CHAR(l);
}
buf[len] = 0;
if (!IS_CHAR(cur)) {
xmlFatalErr(ctxt, XML_ERR_LITERAL_NOT_FINISHED, NULL);
} else {
NEXT;
}
return(buf);
}
/**
* xmlParsePubidLiteral:
* @ctxt: an XML parser context
*
* DEPRECATED: Internal function, don't use.
*
* parse an XML public literal
*
* [12] PubidLiteral ::= '"' PubidChar* '"' | "'" (PubidChar - "'")* "'"
*
* Returns the PubidLiteral parsed or NULL.
*/
xmlChar *
xmlParsePubidLiteral(xmlParserCtxtPtr ctxt) {
xmlChar *buf = NULL;
int len = 0;
int size = XML_PARSER_BUFFER_SIZE;
int maxLength = (ctxt->options & XML_PARSE_HUGE) ?
XML_MAX_TEXT_LENGTH :
XML_MAX_NAME_LENGTH;
xmlChar cur;
xmlChar stop;
if (RAW == '"') {
NEXT;
stop = '"';
} else if (RAW == '\'') {
NEXT;
stop = '\'';
} else {
xmlFatalErr(ctxt, XML_ERR_LITERAL_NOT_STARTED, NULL);
return(NULL);
}
buf = (xmlChar *) xmlMallocAtomic(size);
if (buf == NULL) {
xmlErrMemory(ctxt);
return(NULL);
}
cur = CUR;
while ((IS_PUBIDCHAR_CH(cur)) && (cur != stop) &&
(PARSER_STOPPED(ctxt) == 0)) { /* checked */
if (len + 1 >= size) {
xmlChar *tmp;
size *= 2;
tmp = (xmlChar *) xmlRealloc(buf, size);
if (tmp == NULL) {
xmlErrMemory(ctxt);
xmlFree(buf);
return(NULL);
}
buf = tmp;
}
buf[len++] = cur;
if (len > maxLength) {
xmlFatalErr(ctxt, XML_ERR_NAME_TOO_LONG, "Public ID");
xmlFree(buf);
return(NULL);
}
NEXT;
cur = CUR;
}
buf[len] = 0;
if (cur != stop) {
xmlFatalErr(ctxt, XML_ERR_LITERAL_NOT_FINISHED, NULL);
} else {
NEXTL(1);
}
return(buf);
}
static void xmlParseCharDataComplex(xmlParserCtxtPtr ctxt, int partial);
/*
* used for the test in the inner loop of the char data testing
*/
static const unsigned char test_char_data[256] = {
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x09, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x9, CR/LF separated */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x00, 0x27, /* & */
0x28, 0x29, 0x2A, 0x2B, 0x2C, 0x2D, 0x2E, 0x2F,
0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37,
0x38, 0x39, 0x3A, 0x3B, 0x00, 0x3D, 0x3E, 0x3F, /* < */
0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47,
0x48, 0x49, 0x4A, 0x4B, 0x4C, 0x4D, 0x4E, 0x4F,
0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57,
0x58, 0x59, 0x5A, 0x5B, 0x5C, 0x00, 0x5E, 0x5F, /* ] */
0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67,
0x68, 0x69, 0x6A, 0x6B, 0x6C, 0x6D, 0x6E, 0x6F,
0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77,
0x78, 0x79, 0x7A, 0x7B, 0x7C, 0x7D, 0x7E, 0x7F,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* non-ascii */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
};
/**
* xmlParseCharDataInternal:
* @ctxt: an XML parser context
* @partial: buffer may contain partial UTF-8 sequences
*
* Parse character data. Always makes progress if the first char isn't
* '<' or '&'.
*
* The right angle bracket (>) may be represented using the string "&gt;",
* and must, for compatibility, be escaped using "&gt;" or a character
* reference when it appears in the string "]]>" in content, when that
* string is not marking the end of a CDATA section.
*
* [14] CharData ::= [^<&]* - ([^<&]* ']]>' [^<&]*)
*/
static void
xmlParseCharDataInternal(xmlParserCtxtPtr ctxt, int partial) {
const xmlChar *in;
int nbchar = 0;
int line = ctxt->input->line;
int col = ctxt->input->col;
int ccol;
GROW;
/*
* Accelerated common case where input don't need to be
* modified before passing it to the handler.
*/
in = ctxt->input->cur;
do {
get_more_space:
while (*in == 0x20) { in++; ctxt->input->col++; }
if (*in == 0xA) {
do {
ctxt->input->line++; ctxt->input->col = 1;
in++;
} while (*in == 0xA);
goto get_more_space;
}
if (*in == '<') {
nbchar = in - ctxt->input->cur;
if (nbchar > 0) {
const xmlChar *tmp = ctxt->input->cur;
ctxt->input->cur = in;
if ((ctxt->sax != NULL) &&
(ctxt->disableSAX == 0) &&
(ctxt->sax->ignorableWhitespace !=
ctxt->sax->characters)) {
if (areBlanks(ctxt, tmp, nbchar, 1)) {
if (ctxt->sax->ignorableWhitespace != NULL)
ctxt->sax->ignorableWhitespace(ctxt->userData,
tmp, nbchar);
} else {
if (ctxt->sax->characters != NULL)
ctxt->sax->characters(ctxt->userData,
tmp, nbchar);
if (*ctxt->space == -1)
*ctxt->space = -2;
}
} else if ((ctxt->sax != NULL) &&
(ctxt->disableSAX == 0) &&
(ctxt->sax->characters != NULL)) {
ctxt->sax->characters(ctxt->userData,
tmp, nbchar);
}
}
return;
}
get_more:
ccol = ctxt->input->col;
while (test_char_data[*in]) {
in++;
ccol++;
}
ctxt->input->col = ccol;
if (*in == 0xA) {
do {
ctxt->input->line++; ctxt->input->col = 1;
in++;
} while (*in == 0xA);
goto get_more;
}
if (*in == ']') {
if ((in[1] == ']') && (in[2] == '>')) {
xmlFatalErr(ctxt, XML_ERR_MISPLACED_CDATA_END, NULL);
ctxt->input->cur = in + 1;
return;
}
in++;
ctxt->input->col++;
goto get_more;
}
nbchar = in - ctxt->input->cur;
if (nbchar > 0) {
if ((ctxt->sax != NULL) &&
(ctxt->disableSAX == 0) &&
(ctxt->sax->ignorableWhitespace !=
ctxt->sax->characters) &&
(IS_BLANK_CH(*ctxt->input->cur))) {
const xmlChar *tmp = ctxt->input->cur;
ctxt->input->cur = in;
if (areBlanks(ctxt, tmp, nbchar, 0)) {
if (ctxt->sax->ignorableWhitespace != NULL)
ctxt->sax->ignorableWhitespace(ctxt->userData,
tmp, nbchar);
} else {
if (ctxt->sax->characters != NULL)
ctxt->sax->characters(ctxt->userData,
tmp, nbchar);
if (*ctxt->space == -1)
*ctxt->space = -2;
}
line = ctxt->input->line;
col = ctxt->input->col;
} else if ((ctxt->sax != NULL) &&
(ctxt->disableSAX == 0)) {
if (ctxt->sax->characters != NULL)
ctxt->sax->characters(ctxt->userData,
ctxt->input->cur, nbchar);
line = ctxt->input->line;
col = ctxt->input->col;
}
}
ctxt->input->cur = in;
if (*in == 0xD) {
in++;
if (*in == 0xA) {
ctxt->input->cur = in;
in++;
ctxt->input->line++; ctxt->input->col = 1;
continue; /* while */
}
in--;
}
if (*in == '<') {
return;
}
if (*in == '&') {
return;
}
SHRINK;
GROW;
in = ctxt->input->cur;
} while (((*in >= 0x20) && (*in <= 0x7F)) ||
(*in == 0x09) || (*in == 0x0a));
ctxt->input->line = line;
ctxt->input->col = col;
xmlParseCharDataComplex(ctxt, partial);
}
/**
* xmlParseCharDataComplex:
* @ctxt: an XML parser context
* @cdata: int indicating whether we are within a CDATA section
*
* Always makes progress if the first char isn't '<' or '&'.
*
* parse a CharData section.this is the fallback function
* of xmlParseCharData() when the parsing requires handling
* of non-ASCII characters.
*/
static void
xmlParseCharDataComplex(xmlParserCtxtPtr ctxt, int partial) {
xmlChar buf[XML_PARSER_BIG_BUFFER_SIZE + 5];
int nbchar = 0;
int cur, l;
cur = CUR_CHAR(l);
while ((cur != '<') && /* checked */
(cur != '&') &&
(IS_CHAR(cur))) {
if ((cur == ']') && (NXT(1) == ']') && (NXT(2) == '>')) {
xmlFatalErr(ctxt, XML_ERR_MISPLACED_CDATA_END, NULL);
}
COPY_BUF(buf, nbchar, cur);
/* move current position before possible calling of ctxt->sax->characters */
NEXTL(l);
if (nbchar >= XML_PARSER_BIG_BUFFER_SIZE) {
buf[nbchar] = 0;
/*
* OK the segment is to be consumed as chars.
*/
if ((ctxt->sax != NULL) && (!ctxt->disableSAX)) {
if (areBlanks(ctxt, buf, nbchar, 0)) {
if (ctxt->sax->ignorableWhitespace != NULL)
ctxt->sax->ignorableWhitespace(ctxt->userData,
buf, nbchar);
} else {
if (ctxt->sax->characters != NULL)
ctxt->sax->characters(ctxt->userData, buf, nbchar);
if ((ctxt->sax->characters !=
ctxt->sax->ignorableWhitespace) &&
(*ctxt->space == -1))
*ctxt->space = -2;
}
}
nbchar = 0;
SHRINK;
}
cur = CUR_CHAR(l);
}
if (nbchar != 0) {
buf[nbchar] = 0;
/*
* OK the segment is to be consumed as chars.
*/
if ((ctxt->sax != NULL) && (!ctxt->disableSAX)) {
if (areBlanks(ctxt, buf, nbchar, 0)) {
if (ctxt->sax->ignorableWhitespace != NULL)
ctxt->sax->ignorableWhitespace(ctxt->userData, buf, nbchar);
} else {
if (ctxt->sax->characters != NULL)
ctxt->sax->characters(ctxt->userData, buf, nbchar);
if ((ctxt->sax->characters != ctxt->sax->ignorableWhitespace) &&
(*ctxt->space == -1))
*ctxt->space = -2;
}
}
}
/*
* cur == 0 can mean
*
* - End of buffer.
* - An actual 0 character.
* - An incomplete UTF-8 sequence. This is allowed if partial is set.
*/
if (ctxt->input->cur < ctxt->input->end) {
if ((cur == 0) && (CUR != 0)) {
if (partial == 0) {
xmlFatalErrMsgInt(ctxt, XML_ERR_INVALID_CHAR,
"Incomplete UTF-8 sequence starting with %02X\n", CUR);
NEXTL(1);
}
} else if ((cur != '<') && (cur != '&')) {
/* Generate the error and skip the offending character */
xmlFatalErrMsgInt(ctxt, XML_ERR_INVALID_CHAR,
"PCDATA invalid Char value %d\n", cur);
NEXTL(l);
}
}
}
/**
* xmlParseCharData:
* @ctxt: an XML parser context
* @cdata: unused
*
* DEPRECATED: Internal function, don't use.
*/
void
xmlParseCharData(xmlParserCtxtPtr ctxt, ATTRIBUTE_UNUSED int cdata) {
xmlParseCharDataInternal(ctxt, 0);
}
/**
* xmlParseExternalID:
* @ctxt: an XML parser context
* @publicID: a xmlChar** receiving PubidLiteral
* @strict: indicate whether we should restrict parsing to only
* production [75], see NOTE below
*
* DEPRECATED: Internal function, don't use.
*
* Parse an External ID or a Public ID
*
* NOTE: Productions [75] and [83] interact badly since [75] can generate
* 'PUBLIC' S PubidLiteral S SystemLiteral
*
* [75] ExternalID ::= 'SYSTEM' S SystemLiteral
* | 'PUBLIC' S PubidLiteral S SystemLiteral
*
* [83] PublicID ::= 'PUBLIC' S PubidLiteral
*
* Returns the function returns SystemLiteral and in the second
* case publicID receives PubidLiteral, is strict is off
* it is possible to return NULL and have publicID set.
*/
xmlChar *
xmlParseExternalID(xmlParserCtxtPtr ctxt, xmlChar **publicID, int strict) {
xmlChar *URI = NULL;
*publicID = NULL;
if (CMP6(CUR_PTR, 'S', 'Y', 'S', 'T', 'E', 'M')) {
SKIP(6);
if (SKIP_BLANKS == 0) {
xmlFatalErrMsg(ctxt, XML_ERR_SPACE_REQUIRED,
"Space required after 'SYSTEM'\n");
}
URI = xmlParseSystemLiteral(ctxt);
if (URI == NULL) {
xmlFatalErr(ctxt, XML_ERR_URI_REQUIRED, NULL);
}
} else if (CMP6(CUR_PTR, 'P', 'U', 'B', 'L', 'I', 'C')) {
SKIP(6);
if (SKIP_BLANKS == 0) {
xmlFatalErrMsg(ctxt, XML_ERR_SPACE_REQUIRED,
"Space required after 'PUBLIC'\n");
}
*publicID = xmlParsePubidLiteral(ctxt);
if (*publicID == NULL) {
xmlFatalErr(ctxt, XML_ERR_PUBID_REQUIRED, NULL);
}
if (strict) {
/*
* We don't handle [83] so "S SystemLiteral" is required.
*/
if (SKIP_BLANKS == 0) {
xmlFatalErrMsg(ctxt, XML_ERR_SPACE_REQUIRED,
"Space required after the Public Identifier\n");
}
} else {
/*
* We handle [83] so we return immediately, if
* "S SystemLiteral" is not detected. We skip blanks if no
* system literal was found, but this is harmless since we must
* be at the end of a NotationDecl.
*/
if (SKIP_BLANKS == 0) return(NULL);
if ((CUR != '\'') && (CUR != '"')) return(NULL);
}
URI = xmlParseSystemLiteral(ctxt);
if (URI == NULL) {
xmlFatalErr(ctxt, XML_ERR_URI_REQUIRED, NULL);
}
}
return(URI);
}
/**
* xmlParseCommentComplex:
* @ctxt: an XML parser context
* @buf: the already parsed part of the buffer
* @len: number of bytes in the buffer
* @size: allocated size of the buffer
*
* Skip an XML (SGML) comment <!-- .... -->
* The spec says that "For compatibility, the string "--" (double-hyphen)
* must not occur within comments. "
* This is the slow routine in case the accelerator for ascii didn't work
*
* [15] Comment ::= '<!--' ((Char - '-') | ('-' (Char - '-')))* '-->'
*/
static void
xmlParseCommentComplex(xmlParserCtxtPtr ctxt, xmlChar *buf,
size_t len, size_t size) {
int q, ql;
int r, rl;
int cur, l;
size_t maxLength = (ctxt->options & XML_PARSE_HUGE) ?
XML_MAX_HUGE_LENGTH :
XML_MAX_TEXT_LENGTH;
if (buf == NULL) {
len = 0;
size = XML_PARSER_BUFFER_SIZE;
buf = (xmlChar *) xmlMallocAtomic(size);
if (buf == NULL) {
xmlErrMemory(ctxt);
return;
}
}
q = CUR_CHAR(ql);
if (q == 0)
goto not_terminated;
if (!IS_CHAR(q)) {
xmlFatalErrMsgInt(ctxt, XML_ERR_INVALID_CHAR,
"xmlParseComment: invalid xmlChar value %d\n",
q);
xmlFree (buf);
return;
}
NEXTL(ql);
r = CUR_CHAR(rl);
if (r == 0)
goto not_terminated;
if (!IS_CHAR(r)) {
xmlFatalErrMsgInt(ctxt, XML_ERR_INVALID_CHAR,
"xmlParseComment: invalid xmlChar value %d\n",
r);
xmlFree (buf);
return;
}
NEXTL(rl);
cur = CUR_CHAR(l);
if (cur == 0)
goto not_terminated;
while (IS_CHAR(cur) && /* checked */
((cur != '>') ||
(r != '-') || (q != '-'))) {
if ((r == '-') && (q == '-')) {
xmlFatalErr(ctxt, XML_ERR_HYPHEN_IN_COMMENT, NULL);
}
if (len + 5 >= size) {
xmlChar *new_buf;
size_t new_size;
new_size = size * 2;
new_buf = (xmlChar *) xmlRealloc(buf, new_size);
if (new_buf == NULL) {
xmlFree (buf);
xmlErrMemory(ctxt);
return;
}
buf = new_buf;
size = new_size;
}
COPY_BUF(buf, len, q);
if (len > maxLength) {
xmlFatalErrMsgStr(ctxt, XML_ERR_COMMENT_NOT_FINISHED,
"Comment too big found", NULL);
xmlFree (buf);
return;
}
q = r;
ql = rl;
r = cur;
rl = l;
NEXTL(l);
cur = CUR_CHAR(l);
}
buf[len] = 0;
if (cur == 0) {
xmlFatalErrMsgStr(ctxt, XML_ERR_COMMENT_NOT_FINISHED,
"Comment not terminated \n<!--%.50s\n", buf);
} else if (!IS_CHAR(cur)) {
xmlFatalErrMsgInt(ctxt, XML_ERR_INVALID_CHAR,
"xmlParseComment: invalid xmlChar value %d\n",
cur);
} else {
NEXT;
if ((ctxt->sax != NULL) && (ctxt->sax->comment != NULL) &&
(!ctxt->disableSAX))
ctxt->sax->comment(ctxt->userData, buf);
}
xmlFree(buf);
return;
not_terminated:
xmlFatalErrMsgStr(ctxt, XML_ERR_COMMENT_NOT_FINISHED,
"Comment not terminated\n", NULL);
xmlFree(buf);
}
/**
* xmlParseComment:
* @ctxt: an XML parser context
*
* DEPRECATED: Internal function, don't use.
*
* Parse an XML (SGML) comment. Always consumes '<!'.
*
* The spec says that "For compatibility, the string "--" (double-hyphen)
* must not occur within comments. "
*
* [15] Comment ::= '<!--' ((Char - '-') | ('-' (Char - '-')))* '-->'
*/
void
xmlParseComment(xmlParserCtxtPtr ctxt) {
xmlChar *buf = NULL;
size_t size = XML_PARSER_BUFFER_SIZE;
size_t len = 0;
size_t maxLength = (ctxt->options & XML_PARSE_HUGE) ?
XML_MAX_HUGE_LENGTH :
XML_MAX_TEXT_LENGTH;
const xmlChar *in;
size_t nbchar = 0;
int ccol;
/*
* Check that there is a comment right here.
*/
if ((RAW != '<') || (NXT(1) != '!'))
return;
SKIP(2);
if ((RAW != '-') || (NXT(1) != '-'))
return;
SKIP(2);
GROW;
/*
* Accelerated common case where input don't need to be
* modified before passing it to the handler.
*/
in = ctxt->input->cur;
do {
if (*in == 0xA) {
do {
ctxt->input->line++; ctxt->input->col = 1;
in++;
} while (*in == 0xA);
}
get_more:
ccol = ctxt->input->col;
while (((*in > '-') && (*in <= 0x7F)) ||
((*in >= 0x20) && (*in < '-')) ||
(*in == 0x09)) {
in++;
ccol++;
}
ctxt->input->col = ccol;
if (*in == 0xA) {
do {
ctxt->input->line++; ctxt->input->col = 1;
in++;
} while (*in == 0xA);
goto get_more;
}
nbchar = in - ctxt->input->cur;
/*
* save current set of data
*/
if (nbchar > 0) {
if (buf == NULL) {
if ((*in == '-') && (in[1] == '-'))
size = nbchar + 1;
else
size = XML_PARSER_BUFFER_SIZE + nbchar;
buf = (xmlChar *) xmlMallocAtomic(size);
if (buf == NULL) {
xmlErrMemory(ctxt);
return;
}
len = 0;
} else if (len + nbchar + 1 >= size) {
xmlChar *new_buf;
size += len + nbchar + XML_PARSER_BUFFER_SIZE;
new_buf = (xmlChar *) xmlRealloc(buf, size);
if (new_buf == NULL) {
xmlFree (buf);
xmlErrMemory(ctxt);
return;
}
buf = new_buf;
}
memcpy(&buf[len], ctxt->input->cur, nbchar);
len += nbchar;
buf[len] = 0;
}
if (len > maxLength) {
xmlFatalErrMsgStr(ctxt, XML_ERR_COMMENT_NOT_FINISHED,
"Comment too big found", NULL);
xmlFree (buf);
return;
}
ctxt->input->cur = in;
if (*in == 0xA) {
in++;
ctxt->input->line++; ctxt->input->col = 1;
}
if (*in == 0xD) {
in++;
if (*in == 0xA) {
ctxt->input->cur = in;
in++;
ctxt->input->line++; ctxt->input->col = 1;
goto get_more;
}
in--;
}
SHRINK;
GROW;
in = ctxt->input->cur;
if (*in == '-') {
if (in[1] == '-') {
if (in[2] == '>') {
SKIP(3);
if ((ctxt->sax != NULL) && (ctxt->sax->comment != NULL) &&
(!ctxt->disableSAX)) {
if (buf != NULL)
ctxt->sax->comment(ctxt->userData, buf);
else
ctxt->sax->comment(ctxt->userData, BAD_CAST "");
}
if (buf != NULL)
xmlFree(buf);
return;
}
if (buf != NULL) {
xmlFatalErrMsgStr(ctxt, XML_ERR_HYPHEN_IN_COMMENT,
"Double hyphen within comment: "
"<!--%.50s\n",
buf);
} else
xmlFatalErrMsgStr(ctxt, XML_ERR_HYPHEN_IN_COMMENT,
"Double hyphen within comment\n", NULL);
in++;
ctxt->input->col++;
}
in++;
ctxt->input->col++;
goto get_more;
}
} while (((*in >= 0x20) && (*in <= 0x7F)) || (*in == 0x09) || (*in == 0x0a));
xmlParseCommentComplex(ctxt, buf, len, size);
}
/**
* xmlParsePITarget:
* @ctxt: an XML parser context
*
* DEPRECATED: Internal function, don't use.
*
* parse the name of a PI
*
* [17] PITarget ::= Name - (('X' | 'x') ('M' | 'm') ('L' | 'l'))
*
* Returns the PITarget name or NULL
*/
const xmlChar *
xmlParsePITarget(xmlParserCtxtPtr ctxt) {
const xmlChar *name;
name = xmlParseName(ctxt);
if ((name != NULL) &&
((name[0] == 'x') || (name[0] == 'X')) &&
((name[1] == 'm') || (name[1] == 'M')) &&
((name[2] == 'l') || (name[2] == 'L'))) {
int i;
if ((name[0] == 'x') && (name[1] == 'm') &&
(name[2] == 'l') && (name[3] == 0)) {
xmlFatalErrMsg(ctxt, XML_ERR_RESERVED_XML_NAME,
"XML declaration allowed only at the start of the document\n");
return(name);
} else if (name[3] == 0) {
xmlFatalErr(ctxt, XML_ERR_RESERVED_XML_NAME, NULL);
return(name);
}
for (i = 0;;i++) {
if (xmlW3CPIs[i] == NULL) break;
if (xmlStrEqual(name, (const xmlChar *)xmlW3CPIs[i]))
return(name);
}
xmlWarningMsg(ctxt, XML_ERR_RESERVED_XML_NAME,
"xmlParsePITarget: invalid name prefix 'xml'\n",
NULL, NULL);
}
if ((name != NULL) && (xmlStrchr(name, ':') != NULL)) {
xmlNsErr(ctxt, XML_NS_ERR_COLON,
"colons are forbidden from PI names '%s'\n", name, NULL, NULL);
}
return(name);
}
#ifdef LIBXML_CATALOG_ENABLED
/**
* xmlParseCatalogPI:
* @ctxt: an XML parser context
* @catalog: the PI value string
*
* parse an XML Catalog Processing Instruction.
*
* <?oasis-xml-catalog catalog="http://example.com/catalog.xml"?>
*
* Occurs only if allowed by the user and if happening in the Misc
* part of the document before any doctype information
* This will add the given catalog to the parsing context in order
* to be used if there is a resolution need further down in the document
*/
static void
xmlParseCatalogPI(xmlParserCtxtPtr ctxt, const xmlChar *catalog) {
xmlChar *URL = NULL;
const xmlChar *tmp, *base;
xmlChar marker;
tmp = catalog;
while (IS_BLANK_CH(*tmp)) tmp++;
if (xmlStrncmp(tmp, BAD_CAST"catalog", 7))
goto error;
tmp += 7;
while (IS_BLANK_CH(*tmp)) tmp++;
if (*tmp != '=') {
return;
}
tmp++;
while (IS_BLANK_CH(*tmp)) tmp++;
marker = *tmp;
if ((marker != '\'') && (marker != '"'))
goto error;
tmp++;
base = tmp;
while ((*tmp != 0) && (*tmp != marker)) tmp++;
if (*tmp == 0)
goto error;
URL = xmlStrndup(base, tmp - base);
tmp++;
while (IS_BLANK_CH(*tmp)) tmp++;
if (*tmp != 0)
goto error;
if (URL != NULL) {
/*
* Unfortunately, the catalog API doesn't report OOM errors.
* xmlGetLastError isn't very helpful since we don't know
* where the last error came from. We'd have to reset it
* before this call and restore it afterwards.
*/
ctxt->catalogs = xmlCatalogAddLocal(ctxt->catalogs, URL);
xmlFree(URL);
}
return;
error:
xmlWarningMsg(ctxt, XML_WAR_CATALOG_PI,
"Catalog PI syntax error: %s\n",
catalog, NULL);
if (URL != NULL)
xmlFree(URL);
}
#endif
/**
* xmlParsePI:
* @ctxt: an XML parser context
*
* DEPRECATED: Internal function, don't use.
*
* parse an XML Processing Instruction.
*
* [16] PI ::= '<?' PITarget (S (Char* - (Char* '?>' Char*)))? '?>'
*
* The processing is transferred to SAX once parsed.
*/
void
xmlParsePI(xmlParserCtxtPtr ctxt) {
xmlChar *buf = NULL;
size_t len = 0;
size_t size = XML_PARSER_BUFFER_SIZE;
size_t maxLength = (ctxt->options & XML_PARSE_HUGE) ?
XML_MAX_HUGE_LENGTH :
XML_MAX_TEXT_LENGTH;
int cur, l;
const xmlChar *target;
if ((RAW == '<') && (NXT(1) == '?')) {
/*
* this is a Processing Instruction.
*/
SKIP(2);
/*
* Parse the target name and check for special support like
* namespace.
*/
target = xmlParsePITarget(ctxt);
if (target != NULL) {
if ((RAW == '?') && (NXT(1) == '>')) {
SKIP(2);
/*
* SAX: PI detected.
*/
if ((ctxt->sax) && (!ctxt->disableSAX) &&
(ctxt->sax->processingInstruction != NULL))
ctxt->sax->processingInstruction(ctxt->userData,
target, NULL);
return;
}
buf = (xmlChar *) xmlMallocAtomic(size);
if (buf == NULL) {
xmlErrMemory(ctxt);
return;
}
if (SKIP_BLANKS == 0) {
xmlFatalErrMsgStr(ctxt, XML_ERR_SPACE_REQUIRED,
"ParsePI: PI %s space expected\n", target);
}
cur = CUR_CHAR(l);
while (IS_CHAR(cur) && /* checked */
((cur != '?') || (NXT(1) != '>'))) {
if (len + 5 >= size) {
xmlChar *tmp;
size_t new_size = size * 2;
tmp = (xmlChar *) xmlRealloc(buf, new_size);
if (tmp == NULL) {
xmlErrMemory(ctxt);
xmlFree(buf);
return;
}
buf = tmp;
size = new_size;
}
COPY_BUF(buf, len, cur);
if (len > maxLength) {
xmlFatalErrMsgStr(ctxt, XML_ERR_PI_NOT_FINISHED,
"PI %s too big found", target);
xmlFree(buf);
return;
}
NEXTL(l);
cur = CUR_CHAR(l);
}
buf[len] = 0;
if (cur != '?') {
xmlFatalErrMsgStr(ctxt, XML_ERR_PI_NOT_FINISHED,
"ParsePI: PI %s never end ...\n", target);
} else {
SKIP(2);
#ifdef LIBXML_CATALOG_ENABLED
if ((ctxt->inSubset == 0) &&
(xmlStrEqual(target, XML_CATALOG_PI))) {
xmlCatalogAllow allow = xmlCatalogGetDefaults();
if ((allow == XML_CATA_ALLOW_DOCUMENT) ||
(allow == XML_CATA_ALLOW_ALL))
xmlParseCatalogPI(ctxt, buf);
}
#endif
/*
* SAX: PI detected.
*/
if ((ctxt->sax) && (!ctxt->disableSAX) &&
(ctxt->sax->processingInstruction != NULL))
ctxt->sax->processingInstruction(ctxt->userData,
target, buf);
}
xmlFree(buf);
} else {
xmlFatalErr(ctxt, XML_ERR_PI_NOT_STARTED, NULL);
}
}
}
/**
* xmlParseNotationDecl:
* @ctxt: an XML parser context
*
* DEPRECATED: Internal function, don't use.
*
* Parse a notation declaration. Always consumes '<!'.
*
* [82] NotationDecl ::= '<!NOTATION' S Name S (ExternalID | PublicID) S? '>'
*
* Hence there is actually 3 choices:
* 'PUBLIC' S PubidLiteral
* 'PUBLIC' S PubidLiteral S SystemLiteral
* and 'SYSTEM' S SystemLiteral
*
* See the NOTE on xmlParseExternalID().
*/
void
xmlParseNotationDecl(xmlParserCtxtPtr ctxt) {
const xmlChar *name;
xmlChar *Pubid;
xmlChar *Systemid;
if ((CUR != '<') || (NXT(1) != '!'))
return;
SKIP(2);
if (CMP8(CUR_PTR, 'N', 'O', 'T', 'A', 'T', 'I', 'O', 'N')) {
int inputid = ctxt->input->id;
SKIP(8);
if (SKIP_BLANKS_PE == 0) {
xmlFatalErrMsg(ctxt, XML_ERR_SPACE_REQUIRED,
"Space required after '<!NOTATION'\n");
return;
}
name = xmlParseName(ctxt);
if (name == NULL) {
xmlFatalErr(ctxt, XML_ERR_NOTATION_NOT_STARTED, NULL);
return;
}
if (xmlStrchr(name, ':') != NULL) {
xmlNsErr(ctxt, XML_NS_ERR_COLON,
"colons are forbidden from notation names '%s'\n",
name, NULL, NULL);
}
if (SKIP_BLANKS_PE == 0) {
xmlFatalErrMsg(ctxt, XML_ERR_SPACE_REQUIRED,
"Space required after the NOTATION name'\n");
return;
}
/*
* Parse the IDs.
*/
Systemid = xmlParseExternalID(ctxt, &Pubid, 0);
SKIP_BLANKS_PE;
if (RAW == '>') {
if (inputid != ctxt->input->id) {
xmlFatalErrMsg(ctxt, XML_ERR_ENTITY_BOUNDARY,
"Notation declaration doesn't start and stop"
" in the same entity\n");
}
NEXT;
if ((ctxt->sax != NULL) && (!ctxt->disableSAX) &&
(ctxt->sax->notationDecl != NULL))
ctxt->sax->notationDecl(ctxt->userData, name, Pubid, Systemid);
} else {
xmlFatalErr(ctxt, XML_ERR_NOTATION_NOT_FINISHED, NULL);
}
if (Systemid != NULL) xmlFree(Systemid);
if (Pubid != NULL) xmlFree(Pubid);
}
}
/**
* xmlParseEntityDecl:
* @ctxt: an XML parser context
*
* DEPRECATED: Internal function, don't use.
*
* Parse an entity declaration. Always consumes '<!'.
*
* [70] EntityDecl ::= GEDecl | PEDecl
*
* [71] GEDecl ::= '<!ENTITY' S Name S EntityDef S? '>'
*
* [72] PEDecl ::= '<!ENTITY' S '%' S Name S PEDef S? '>'
*
* [73] EntityDef ::= EntityValue | (ExternalID NDataDecl?)
*
* [74] PEDef ::= EntityValue | ExternalID
*
* [76] NDataDecl ::= S 'NDATA' S Name
*
* [ VC: Notation Declared ]
* The Name must match the declared name of a notation.
*/
void
xmlParseEntityDecl(xmlParserCtxtPtr ctxt) {
const xmlChar *name = NULL;
xmlChar *value = NULL;
xmlChar *URI = NULL, *literal = NULL;
const xmlChar *ndata = NULL;
int isParameter = 0;
xmlChar *orig = NULL;
if ((CUR != '<') || (NXT(1) != '!'))
return;
SKIP(2);
/* GROW; done in the caller */
if (CMP6(CUR_PTR, 'E', 'N', 'T', 'I', 'T', 'Y')) {
int inputid = ctxt->input->id;
SKIP(6);
if (SKIP_BLANKS_PE == 0) {
xmlFatalErrMsg(ctxt, XML_ERR_SPACE_REQUIRED,
"Space required after '<!ENTITY'\n");
}
if (RAW == '%') {
NEXT;
if (SKIP_BLANKS_PE == 0) {
xmlFatalErrMsg(ctxt, XML_ERR_SPACE_REQUIRED,
"Space required after '%%'\n");
}
isParameter = 1;
}
name = xmlParseName(ctxt);
if (name == NULL) {
xmlFatalErrMsg(ctxt, XML_ERR_NAME_REQUIRED,
"xmlParseEntityDecl: no name\n");
return;
}
if (xmlStrchr(name, ':') != NULL) {
xmlNsErr(ctxt, XML_NS_ERR_COLON,
"colons are forbidden from entities names '%s'\n",
name, NULL, NULL);
}
if (SKIP_BLANKS_PE == 0) {
xmlFatalErrMsg(ctxt, XML_ERR_SPACE_REQUIRED,
"Space required after the entity name\n");
}
/*
* handle the various case of definitions...
*/
if (isParameter) {
if ((RAW == '"') || (RAW == '\'')) {
value = xmlParseEntityValue(ctxt, &orig);
if (value) {
if ((ctxt->sax != NULL) &&
(!ctxt->disableSAX) && (ctxt->sax->entityDecl != NULL))
ctxt->sax->entityDecl(ctxt->userData, name,
XML_INTERNAL_PARAMETER_ENTITY,
NULL, NULL, value);
}
} else {
URI = xmlParseExternalID(ctxt, &literal, 1);
if ((URI == NULL) && (literal == NULL)) {
xmlFatalErr(ctxt, XML_ERR_VALUE_REQUIRED, NULL);
}
if (URI) {
if (xmlStrchr(URI, '#')) {
xmlFatalErr(ctxt, XML_ERR_URI_FRAGMENT, NULL);
} else {
if ((ctxt->sax != NULL) &&
(!ctxt->disableSAX) &&
(ctxt->sax->entityDecl != NULL))
ctxt->sax->entityDecl(ctxt->userData, name,
XML_EXTERNAL_PARAMETER_ENTITY,
literal, URI, NULL);
}
}
}
} else {
if ((RAW == '"') || (RAW == '\'')) {
value = xmlParseEntityValue(ctxt, &orig);
if ((ctxt->sax != NULL) &&
(!ctxt->disableSAX) && (ctxt->sax->entityDecl != NULL))
ctxt->sax->entityDecl(ctxt->userData, name,
XML_INTERNAL_GENERAL_ENTITY,
NULL, NULL, value);
/*
* For expat compatibility in SAX mode.
*/
if ((ctxt->myDoc == NULL) ||
(xmlStrEqual(ctxt->myDoc->version, SAX_COMPAT_MODE))) {
if (ctxt->myDoc == NULL) {
ctxt->myDoc = xmlNewDoc(SAX_COMPAT_MODE);
if (ctxt->myDoc == NULL) {
xmlErrMemory(ctxt);
goto done;
}
ctxt->myDoc->properties = XML_DOC_INTERNAL;
}
if (ctxt->myDoc->intSubset == NULL) {
ctxt->myDoc->intSubset = xmlNewDtd(ctxt->myDoc,
BAD_CAST "fake", NULL, NULL);
if (ctxt->myDoc->intSubset == NULL) {
xmlErrMemory(ctxt);
goto done;
}
}
xmlSAX2EntityDecl(ctxt, name, XML_INTERNAL_GENERAL_ENTITY,
NULL, NULL, value);
}
} else {
URI = xmlParseExternalID(ctxt, &literal, 1);
if ((URI == NULL) && (literal == NULL)) {
xmlFatalErr(ctxt, XML_ERR_VALUE_REQUIRED, NULL);
}
if (URI) {
if (xmlStrchr(URI, '#')) {
xmlFatalErr(ctxt, XML_ERR_URI_FRAGMENT, NULL);
}
}
if ((RAW != '>') && (SKIP_BLANKS_PE == 0)) {
xmlFatalErrMsg(ctxt, XML_ERR_SPACE_REQUIRED,
"Space required before 'NDATA'\n");
}
if (CMP5(CUR_PTR, 'N', 'D', 'A', 'T', 'A')) {
SKIP(5);
if (SKIP_BLANKS_PE == 0) {
xmlFatalErrMsg(ctxt, XML_ERR_SPACE_REQUIRED,
"Space required after 'NDATA'\n");
}
ndata = xmlParseName(ctxt);
if ((ctxt->sax != NULL) && (!ctxt->disableSAX) &&
(ctxt->sax->unparsedEntityDecl != NULL))
ctxt->sax->unparsedEntityDecl(ctxt->userData, name,
literal, URI, ndata);
} else {
if ((ctxt->sax != NULL) &&
(!ctxt->disableSAX) && (ctxt->sax->entityDecl != NULL))
ctxt->sax->entityDecl(ctxt->userData, name,
XML_EXTERNAL_GENERAL_PARSED_ENTITY,
literal, URI, NULL);
/*
* For expat compatibility in SAX mode.
* assuming the entity replacement was asked for
*/
if ((ctxt->replaceEntities != 0) &&
((ctxt->myDoc == NULL) ||
(xmlStrEqual(ctxt->myDoc->version, SAX_COMPAT_MODE)))) {
if (ctxt->myDoc == NULL) {
ctxt->myDoc = xmlNewDoc(SAX_COMPAT_MODE);
if (ctxt->myDoc == NULL) {
xmlErrMemory(ctxt);
goto done;
}
ctxt->myDoc->properties = XML_DOC_INTERNAL;
}
if (ctxt->myDoc->intSubset == NULL) {
ctxt->myDoc->intSubset = xmlNewDtd(ctxt->myDoc,
BAD_CAST "fake", NULL, NULL);
if (ctxt->myDoc->intSubset == NULL) {
xmlErrMemory(ctxt);
goto done;
}
}
xmlSAX2EntityDecl(ctxt, name,
XML_EXTERNAL_GENERAL_PARSED_ENTITY,
literal, URI, NULL);
}
}
}
}
SKIP_BLANKS_PE;
if (RAW != '>') {
xmlFatalErrMsgStr(ctxt, XML_ERR_ENTITY_NOT_FINISHED,
"xmlParseEntityDecl: entity %s not terminated\n", name);
xmlHaltParser(ctxt);
} else {
if (inputid != ctxt->input->id) {
xmlFatalErrMsg(ctxt, XML_ERR_ENTITY_BOUNDARY,
"Entity declaration doesn't start and stop in"
" the same entity\n");
}
NEXT;
}
if (orig != NULL) {
/*
* Ugly mechanism to save the raw entity value.
*/
xmlEntityPtr cur = NULL;
if (isParameter) {
if ((ctxt->sax != NULL) &&
(ctxt->sax->getParameterEntity != NULL))
cur = ctxt->sax->getParameterEntity(ctxt->userData, name);
} else {
if ((ctxt->sax != NULL) &&
(ctxt->sax->getEntity != NULL))
cur = ctxt->sax->getEntity(ctxt->userData, name);
if ((cur == NULL) && (ctxt->userData==ctxt)) {
cur = xmlSAX2GetEntity(ctxt, name);
}
}
if ((cur != NULL) && (cur->orig == NULL)) {
cur->orig = orig;
orig = NULL;
}
}
done:
if (value != NULL) xmlFree(value);
if (URI != NULL) xmlFree(URI);
if (literal != NULL) xmlFree(literal);
if (orig != NULL) xmlFree(orig);
}
}
/**
* xmlParseDefaultDecl:
* @ctxt: an XML parser context
* @value: Receive a possible fixed default value for the attribute
*
* DEPRECATED: Internal function, don't use.
*
* Parse an attribute default declaration
*
* [60] DefaultDecl ::= '#REQUIRED' | '#IMPLIED' | (('#FIXED' S)? AttValue)
*
* [ VC: Required Attribute ]
* if the default declaration is the keyword #REQUIRED, then the
* attribute must be specified for all elements of the type in the
* attribute-list declaration.
*
* [ VC: Attribute Default Legal ]
* The declared default value must meet the lexical constraints of
* the declared attribute type c.f. xmlValidateAttributeDecl()
*
* [ VC: Fixed Attribute Default ]
* if an attribute has a default value declared with the #FIXED
* keyword, instances of that attribute must match the default value.
*
* [ WFC: No < in Attribute Values ]
* handled in xmlParseAttValue()
*
* returns: XML_ATTRIBUTE_NONE, XML_ATTRIBUTE_REQUIRED, XML_ATTRIBUTE_IMPLIED
* or XML_ATTRIBUTE_FIXED.
*/
int
xmlParseDefaultDecl(xmlParserCtxtPtr ctxt, xmlChar **value) {
int val;
xmlChar *ret;
*value = NULL;
if (CMP9(CUR_PTR, '#', 'R', 'E', 'Q', 'U', 'I', 'R', 'E', 'D')) {
SKIP(9);
return(XML_ATTRIBUTE_REQUIRED);
}
if (CMP8(CUR_PTR, '#', 'I', 'M', 'P', 'L', 'I', 'E', 'D')) {
SKIP(8);
return(XML_ATTRIBUTE_IMPLIED);
}
val = XML_ATTRIBUTE_NONE;
if (CMP6(CUR_PTR, '#', 'F', 'I', 'X', 'E', 'D')) {
SKIP(6);
val = XML_ATTRIBUTE_FIXED;
if (SKIP_BLANKS_PE == 0) {
xmlFatalErrMsg(ctxt, XML_ERR_SPACE_REQUIRED,
"Space required after '#FIXED'\n");
}
}
ret = xmlParseAttValue(ctxt);
if (ret == NULL) {
xmlFatalErrMsg(ctxt, (xmlParserErrors)ctxt->errNo,
"Attribute default value declaration error\n");
} else
*value = ret;
return(val);
}
/**
* xmlParseNotationType:
* @ctxt: an XML parser context
*
* DEPRECATED: Internal function, don't use.
*
* parse an Notation attribute type.
*
* Note: the leading 'NOTATION' S part has already being parsed...
*
* [58] NotationType ::= 'NOTATION' S '(' S? Name (S? '|' S? Name)* S? ')'
*
* [ VC: Notation Attributes ]
* Values of this type must match one of the notation names included
* in the declaration; all notation names in the declaration must be declared.
*
* Returns: the notation attribute tree built while parsing
*/
xmlEnumerationPtr
xmlParseNotationType(xmlParserCtxtPtr ctxt) {
const xmlChar *name;
xmlEnumerationPtr ret = NULL, last = NULL, cur, tmp;
if (RAW != '(') {
xmlFatalErr(ctxt, XML_ERR_NOTATION_NOT_STARTED, NULL);
return(NULL);
}
do {
NEXT;
SKIP_BLANKS_PE;
name = xmlParseName(ctxt);
if (name == NULL) {
xmlFatalErrMsg(ctxt, XML_ERR_NAME_REQUIRED,
"Name expected in NOTATION declaration\n");
xmlFreeEnumeration(ret);
return(NULL);
}
tmp = ret;
while (tmp != NULL) {
if (xmlStrEqual(name, tmp->name)) {
xmlValidityError(ctxt, XML_DTD_DUP_TOKEN,
"standalone: attribute notation value token %s duplicated\n",
name, NULL);
if (!xmlDictOwns(ctxt->dict, name))
xmlFree((xmlChar *) name);
break;
}
tmp = tmp->next;
}
if (tmp == NULL) {
cur = xmlCreateEnumeration(name);
if (cur == NULL) {
xmlErrMemory(ctxt);
xmlFreeEnumeration(ret);
return(NULL);
}
if (last == NULL) ret = last = cur;
else {
last->next = cur;
last = cur;
}
}
SKIP_BLANKS_PE;
} while (RAW == '|');
if (RAW != ')') {
xmlFatalErr(ctxt, XML_ERR_NOTATION_NOT_FINISHED, NULL);
xmlFreeEnumeration(ret);
return(NULL);
}
NEXT;
return(ret);
}
/**
* xmlParseEnumerationType:
* @ctxt: an XML parser context
*
* DEPRECATED: Internal function, don't use.
*
* parse an Enumeration attribute type.
*
* [59] Enumeration ::= '(' S? Nmtoken (S? '|' S? Nmtoken)* S? ')'
*
* [ VC: Enumeration ]
* Values of this type must match one of the Nmtoken tokens in
* the declaration
*
* Returns: the enumeration attribute tree built while parsing
*/
xmlEnumerationPtr
xmlParseEnumerationType(xmlParserCtxtPtr ctxt) {
xmlChar *name;
xmlEnumerationPtr ret = NULL, last = NULL, cur, tmp;
if (RAW != '(') {
xmlFatalErr(ctxt, XML_ERR_ATTLIST_NOT_STARTED, NULL);
return(NULL);
}
do {
NEXT;
SKIP_BLANKS_PE;
name = xmlParseNmtoken(ctxt);
if (name == NULL) {
xmlFatalErr(ctxt, XML_ERR_NMTOKEN_REQUIRED, NULL);
return(ret);
}
tmp = ret;
while (tmp != NULL) {
if (xmlStrEqual(name, tmp->name)) {
xmlValidityError(ctxt, XML_DTD_DUP_TOKEN,
"standalone: attribute enumeration value token %s duplicated\n",
name, NULL);
if (!xmlDictOwns(ctxt->dict, name))
xmlFree(name);
break;
}
tmp = tmp->next;
}
if (tmp == NULL) {
cur = xmlCreateEnumeration(name);
if (!xmlDictOwns(ctxt->dict, name))
xmlFree(name);
if (cur == NULL) {
xmlErrMemory(ctxt);
xmlFreeEnumeration(ret);
return(NULL);
}
if (last == NULL) ret = last = cur;
else {
last->next = cur;
last = cur;
}
}
SKIP_BLANKS_PE;
} while (RAW == '|');
if (RAW != ')') {
xmlFatalErr(ctxt, XML_ERR_ATTLIST_NOT_FINISHED, NULL);
return(ret);
}
NEXT;
return(ret);
}
/**
* xmlParseEnumeratedType:
* @ctxt: an XML parser context
* @tree: the enumeration tree built while parsing
*
* DEPRECATED: Internal function, don't use.
*
* parse an Enumerated attribute type.
*
* [57] EnumeratedType ::= NotationType | Enumeration
*
* [58] NotationType ::= 'NOTATION' S '(' S? Name (S? '|' S? Name)* S? ')'
*
*
* Returns: XML_ATTRIBUTE_ENUMERATION or XML_ATTRIBUTE_NOTATION
*/
int
xmlParseEnumeratedType(xmlParserCtxtPtr ctxt, xmlEnumerationPtr *tree) {
if (CMP8(CUR_PTR, 'N', 'O', 'T', 'A', 'T', 'I', 'O', 'N')) {
SKIP(8);
if (SKIP_BLANKS_PE == 0) {
xmlFatalErrMsg(ctxt, XML_ERR_SPACE_REQUIRED,
"Space required after 'NOTATION'\n");
return(0);
}
*tree = xmlParseNotationType(ctxt);
if (*tree == NULL) return(0);
return(XML_ATTRIBUTE_NOTATION);
}
*tree = xmlParseEnumerationType(ctxt);
if (*tree == NULL) return(0);
return(XML_ATTRIBUTE_ENUMERATION);
}
/**
* xmlParseAttributeType:
* @ctxt: an XML parser context
* @tree: the enumeration tree built while parsing
*
* DEPRECATED: Internal function, don't use.
*
* parse the Attribute list def for an element
*
* [54] AttType ::= StringType | TokenizedType | EnumeratedType
*
* [55] StringType ::= 'CDATA'
*
* [56] TokenizedType ::= 'ID' | 'IDREF' | 'IDREFS' | 'ENTITY' |
* 'ENTITIES' | 'NMTOKEN' | 'NMTOKENS'
*
* Validity constraints for attribute values syntax are checked in
* xmlValidateAttributeValue()
*
* [ VC: ID ]
* Values of type ID must match the Name production. A name must not
* appear more than once in an XML document as a value of this type;
* i.e., ID values must uniquely identify the elements which bear them.
*
* [ VC: One ID per Element Type ]
* No element type may have more than one ID attribute specified.
*
* [ VC: ID Attribute Default ]
* An ID attribute must have a declared default of #IMPLIED or #REQUIRED.
*
* [ VC: IDREF ]
* Values of type IDREF must match the Name production, and values
* of type IDREFS must match Names; each IDREF Name must match the value
* of an ID attribute on some element in the XML document; i.e. IDREF
* values must match the value of some ID attribute.
*
* [ VC: Entity Name ]
* Values of type ENTITY must match the Name production, values
* of type ENTITIES must match Names; each Entity Name must match the
* name of an unparsed entity declared in the DTD.
*
* [ VC: Name Token ]
* Values of type NMTOKEN must match the Nmtoken production; values
* of type NMTOKENS must match Nmtokens.
*
* Returns the attribute type
*/
int
xmlParseAttributeType(xmlParserCtxtPtr ctxt, xmlEnumerationPtr *tree) {
if (CMP5(CUR_PTR, 'C', 'D', 'A', 'T', 'A')) {
SKIP(5);
return(XML_ATTRIBUTE_CDATA);
} else if (CMP6(CUR_PTR, 'I', 'D', 'R', 'E', 'F', 'S')) {
SKIP(6);
return(XML_ATTRIBUTE_IDREFS);
} else if (CMP5(CUR_PTR, 'I', 'D', 'R', 'E', 'F')) {
SKIP(5);
return(XML_ATTRIBUTE_IDREF);
} else if ((RAW == 'I') && (NXT(1) == 'D')) {
SKIP(2);
return(XML_ATTRIBUTE_ID);
} else if (CMP6(CUR_PTR, 'E', 'N', 'T', 'I', 'T', 'Y')) {
SKIP(6);
return(XML_ATTRIBUTE_ENTITY);
} else if (CMP8(CUR_PTR, 'E', 'N', 'T', 'I', 'T', 'I', 'E', 'S')) {
SKIP(8);
return(XML_ATTRIBUTE_ENTITIES);
} else if (CMP8(CUR_PTR, 'N', 'M', 'T', 'O', 'K', 'E', 'N', 'S')) {
SKIP(8);
return(XML_ATTRIBUTE_NMTOKENS);
} else if (CMP7(CUR_PTR, 'N', 'M', 'T', 'O', 'K', 'E', 'N')) {
SKIP(7);
return(XML_ATTRIBUTE_NMTOKEN);
}
return(xmlParseEnumeratedType(ctxt, tree));
}
/**
* xmlParseAttributeListDecl:
* @ctxt: an XML parser context
*
* DEPRECATED: Internal function, don't use.
*
* Parse an attribute list declaration for an element. Always consumes '<!'.
*
* [52] AttlistDecl ::= '<!ATTLIST' S Name AttDef* S? '>'
*
* [53] AttDef ::= S Name S AttType S DefaultDecl
*
*/
void
xmlParseAttributeListDecl(xmlParserCtxtPtr ctxt) {
const xmlChar *elemName;
const xmlChar *attrName;
xmlEnumerationPtr tree;
if ((CUR != '<') || (NXT(1) != '!'))
return;
SKIP(2);
if (CMP7(CUR_PTR, 'A', 'T', 'T', 'L', 'I', 'S', 'T')) {
int inputid = ctxt->input->id;
SKIP(7);
if (SKIP_BLANKS_PE == 0) {
xmlFatalErrMsg(ctxt, XML_ERR_SPACE_REQUIRED,
"Space required after '<!ATTLIST'\n");
}
elemName = xmlParseName(ctxt);
if (elemName == NULL) {
xmlFatalErrMsg(ctxt, XML_ERR_NAME_REQUIRED,
"ATTLIST: no name for Element\n");
return;
}
SKIP_BLANKS_PE;
GROW;
while ((RAW != '>') && (PARSER_STOPPED(ctxt) == 0)) {
int type;
int def;
xmlChar *defaultValue = NULL;
GROW;
tree = NULL;
attrName = xmlParseName(ctxt);
if (attrName == NULL) {
xmlFatalErrMsg(ctxt, XML_ERR_NAME_REQUIRED,
"ATTLIST: no name for Attribute\n");
break;
}
GROW;
if (SKIP_BLANKS_PE == 0) {
xmlFatalErrMsg(ctxt, XML_ERR_SPACE_REQUIRED,
"Space required after the attribute name\n");
break;
}
type = xmlParseAttributeType(ctxt, &tree);
if (type <= 0) {
break;
}
GROW;
if (SKIP_BLANKS_PE == 0) {
xmlFatalErrMsg(ctxt, XML_ERR_SPACE_REQUIRED,
"Space required after the attribute type\n");
if (tree != NULL)
xmlFreeEnumeration(tree);
break;
}
def = xmlParseDefaultDecl(ctxt, &defaultValue);
if (def <= 0) {
if (defaultValue != NULL)
xmlFree(defaultValue);
if (tree != NULL)
xmlFreeEnumeration(tree);
break;
}
if ((type != XML_ATTRIBUTE_CDATA) && (defaultValue != NULL))
xmlAttrNormalizeSpace(defaultValue, defaultValue);
GROW;
if (RAW != '>') {
if (SKIP_BLANKS_PE == 0) {
xmlFatalErrMsg(ctxt, XML_ERR_SPACE_REQUIRED,
"Space required after the attribute default value\n");
if (defaultValue != NULL)
xmlFree(defaultValue);
if (tree != NULL)
xmlFreeEnumeration(tree);
break;
}
}
if ((ctxt->sax != NULL) && (!ctxt->disableSAX) &&
(ctxt->sax->attributeDecl != NULL))
ctxt->sax->attributeDecl(ctxt->userData, elemName, attrName,
type, def, defaultValue, tree);
else if (tree != NULL)
xmlFreeEnumeration(tree);
if ((ctxt->sax2) && (defaultValue != NULL) &&
(def != XML_ATTRIBUTE_IMPLIED) &&
(def != XML_ATTRIBUTE_REQUIRED)) {
xmlAddDefAttrs(ctxt, elemName, attrName, defaultValue);
}
if (ctxt->sax2) {
xmlAddSpecialAttr(ctxt, elemName, attrName, type);
}
if (defaultValue != NULL)
xmlFree(defaultValue);
GROW;
}
if (RAW == '>') {
if (inputid != ctxt->input->id) {
xmlFatalErrMsg(ctxt, XML_ERR_ENTITY_BOUNDARY,
"Attribute list declaration doesn't start and"
" stop in the same entity\n");
}
NEXT;
}
}
}
/**
* xmlParseElementMixedContentDecl:
* @ctxt: an XML parser context
* @inputchk: the input used for the current entity, needed for boundary checks
*
* DEPRECATED: Internal function, don't use.
*
* parse the declaration for a Mixed Element content
* The leading '(' and spaces have been skipped in xmlParseElementContentDecl
*
* [51] Mixed ::= '(' S? '#PCDATA' (S? '|' S? Name)* S? ')*' |
* '(' S? '#PCDATA' S? ')'
*
* [ VC: Proper Group/PE Nesting ] applies to [51] too (see [49])
*
* [ VC: No Duplicate Types ]
* The same name must not appear more than once in a single
* mixed-content declaration.
*
* returns: the list of the xmlElementContentPtr describing the element choices
*/
xmlElementContentPtr
xmlParseElementMixedContentDecl(xmlParserCtxtPtr ctxt, int inputchk) {
xmlElementContentPtr ret = NULL, cur = NULL, n;
const xmlChar *elem = NULL;
GROW;
if (CMP7(CUR_PTR, '#', 'P', 'C', 'D', 'A', 'T', 'A')) {
SKIP(7);
SKIP_BLANKS_PE;
if (RAW == ')') {
if (ctxt->input->id != inputchk) {
xmlFatalErrMsg(ctxt, XML_ERR_ENTITY_BOUNDARY,
"Element content declaration doesn't start and"
" stop in the same entity\n");
}
NEXT;
ret = xmlNewDocElementContent(ctxt->myDoc, NULL, XML_ELEMENT_CONTENT_PCDATA);
if (ret == NULL)
goto mem_error;
if (RAW == '*') {
ret->ocur = XML_ELEMENT_CONTENT_MULT;
NEXT;
}
return(ret);
}
if ((RAW == '(') || (RAW == '|')) {
ret = cur = xmlNewDocElementContent(ctxt->myDoc, NULL, XML_ELEMENT_CONTENT_PCDATA);
if (ret == NULL)
goto mem_error;
}
while ((RAW == '|') && (PARSER_STOPPED(ctxt) == 0)) {
NEXT;
n = xmlNewDocElementContent(ctxt->myDoc, NULL, XML_ELEMENT_CONTENT_OR);
if (n == NULL)
goto mem_error;
if (elem == NULL) {
n->c1 = cur;
if (cur != NULL)
cur->parent = n;
ret = cur = n;
} else {
cur->c2 = n;
n->parent = cur;
n->c1 = xmlNewDocElementContent(ctxt->myDoc, elem, XML_ELEMENT_CONTENT_ELEMENT);
if (n->c1 == NULL)
goto mem_error;
n->c1->parent = n;
cur = n;
}
SKIP_BLANKS_PE;
elem = xmlParseName(ctxt);
if (elem == NULL) {
xmlFatalErrMsg(ctxt, XML_ERR_NAME_REQUIRED,
"xmlParseElementMixedContentDecl : Name expected\n");
xmlFreeDocElementContent(ctxt->myDoc, ret);
return(NULL);
}
SKIP_BLANKS_PE;
GROW;
}
if ((RAW == ')') && (NXT(1) == '*')) {
if (elem != NULL) {
cur->c2 = xmlNewDocElementContent(ctxt->myDoc, elem,
XML_ELEMENT_CONTENT_ELEMENT);
if (cur->c2 == NULL)
goto mem_error;
cur->c2->parent = cur;
}
if (ret != NULL)
ret->ocur = XML_ELEMENT_CONTENT_MULT;
if (ctxt->input->id != inputchk) {
xmlFatalErrMsg(ctxt, XML_ERR_ENTITY_BOUNDARY,
"Element content declaration doesn't start and"
" stop in the same entity\n");
}
SKIP(2);
} else {
xmlFreeDocElementContent(ctxt->myDoc, ret);
xmlFatalErr(ctxt, XML_ERR_MIXED_NOT_STARTED, NULL);
return(NULL);
}
} else {
xmlFatalErr(ctxt, XML_ERR_PCDATA_REQUIRED, NULL);
}
return(ret);
mem_error:
xmlErrMemory(ctxt);
xmlFreeDocElementContent(ctxt->myDoc, ret);
return(NULL);
}
/**
* xmlParseElementChildrenContentDeclPriv:
* @ctxt: an XML parser context
* @inputchk: the input used for the current entity, needed for boundary checks
* @depth: the level of recursion
*
* parse the declaration for a Mixed Element content
* The leading '(' and spaces have been skipped in xmlParseElementContentDecl
*
*
* [47] children ::= (choice | seq) ('?' | '*' | '+')?
*
* [48] cp ::= (Name | choice | seq) ('?' | '*' | '+')?
*
* [49] choice ::= '(' S? cp ( S? '|' S? cp )* S? ')'
*
* [50] seq ::= '(' S? cp ( S? ',' S? cp )* S? ')'
*
* [ VC: Proper Group/PE Nesting ] applies to [49] and [50]
* TODO Parameter-entity replacement text must be properly nested
* with parenthesized groups. That is to say, if either of the
* opening or closing parentheses in a choice, seq, or Mixed
* construct is contained in the replacement text for a parameter
* entity, both must be contained in the same replacement text. For
* interoperability, if a parameter-entity reference appears in a
* choice, seq, or Mixed construct, its replacement text should not
* be empty, and neither the first nor last non-blank character of
* the replacement text should be a connector (| or ,).
*
* Returns the tree of xmlElementContentPtr describing the element
* hierarchy.
*/
static xmlElementContentPtr
xmlParseElementChildrenContentDeclPriv(xmlParserCtxtPtr ctxt, int inputchk,
int depth) {
int maxDepth = (ctxt->options & XML_PARSE_HUGE) ? 2048 : 256;
xmlElementContentPtr ret = NULL, cur = NULL, last = NULL, op = NULL;
const xmlChar *elem;
xmlChar type = 0;
if (depth > maxDepth) {
xmlFatalErrMsgInt(ctxt, XML_ERR_RESOURCE_LIMIT,
"xmlParseElementChildrenContentDecl : depth %d too deep, "
"use XML_PARSE_HUGE\n", depth);
return(NULL);
}
SKIP_BLANKS_PE;
GROW;
if (RAW == '(') {
int inputid = ctxt->input->id;
/* Recurse on first child */
NEXT;
SKIP_BLANKS_PE;
cur = ret = xmlParseElementChildrenContentDeclPriv(ctxt, inputid,
depth + 1);
if (cur == NULL)
return(NULL);
SKIP_BLANKS_PE;
GROW;
} else {
elem = xmlParseName(ctxt);
if (elem == NULL) {
xmlFatalErr(ctxt, XML_ERR_ELEMCONTENT_NOT_STARTED, NULL);
return(NULL);
}
cur = ret = xmlNewDocElementContent(ctxt->myDoc, elem, XML_ELEMENT_CONTENT_ELEMENT);
if (cur == NULL) {
xmlErrMemory(ctxt);
return(NULL);
}
GROW;
if (RAW == '?') {
cur->ocur = XML_ELEMENT_CONTENT_OPT;
NEXT;
} else if (RAW == '*') {
cur->ocur = XML_ELEMENT_CONTENT_MULT;
NEXT;
} else if (RAW == '+') {
cur->ocur = XML_ELEMENT_CONTENT_PLUS;
NEXT;
} else {
cur->ocur = XML_ELEMENT_CONTENT_ONCE;
}
GROW;
}
SKIP_BLANKS_PE;
while ((RAW != ')') && (PARSER_STOPPED(ctxt) == 0)) {
/*
* Each loop we parse one separator and one element.
*/
if (RAW == ',') {
if (type == 0) type = CUR;
/*
* Detect "Name | Name , Name" error
*/
else if (type != CUR) {
xmlFatalErrMsgInt(ctxt, XML_ERR_SEPARATOR_REQUIRED,
"xmlParseElementChildrenContentDecl : '%c' expected\n",
type);
if ((last != NULL) && (last != ret))
xmlFreeDocElementContent(ctxt->myDoc, last);
if (ret != NULL)
xmlFreeDocElementContent(ctxt->myDoc, ret);
return(NULL);
}
NEXT;
op = xmlNewDocElementContent(ctxt->myDoc, NULL, XML_ELEMENT_CONTENT_SEQ);
if (op == NULL) {
xmlErrMemory(ctxt);
if ((last != NULL) && (last != ret))
xmlFreeDocElementContent(ctxt->myDoc, last);
xmlFreeDocElementContent(ctxt->myDoc, ret);
return(NULL);
}
if (last == NULL) {
op->c1 = ret;
if (ret != NULL)
ret->parent = op;
ret = cur = op;
} else {
cur->c2 = op;
if (op != NULL)
op->parent = cur;
op->c1 = last;
if (last != NULL)
last->parent = op;
cur =op;
last = NULL;
}
} else if (RAW == '|') {
if (type == 0) type = CUR;
/*
* Detect "Name , Name | Name" error
*/
else if (type != CUR) {
xmlFatalErrMsgInt(ctxt, XML_ERR_SEPARATOR_REQUIRED,
"xmlParseElementChildrenContentDecl : '%c' expected\n",
type);
if ((last != NULL) && (last != ret))
xmlFreeDocElementContent(ctxt->myDoc, last);
if (ret != NULL)
xmlFreeDocElementContent(ctxt->myDoc, ret);
return(NULL);
}
NEXT;
op = xmlNewDocElementContent(ctxt->myDoc, NULL, XML_ELEMENT_CONTENT_OR);
if (op == NULL) {
xmlErrMemory(ctxt);
if ((last != NULL) && (last != ret))
xmlFreeDocElementContent(ctxt->myDoc, last);
if (ret != NULL)
xmlFreeDocElementContent(ctxt->myDoc, ret);
return(NULL);
}
if (last == NULL) {
op->c1 = ret;
if (ret != NULL)
ret->parent = op;
ret = cur = op;
} else {
cur->c2 = op;
if (op != NULL)
op->parent = cur;
op->c1 = last;
if (last != NULL)
last->parent = op;
cur =op;
last = NULL;
}
} else {
xmlFatalErr(ctxt, XML_ERR_ELEMCONTENT_NOT_FINISHED, NULL);
if ((last != NULL) && (last != ret))
xmlFreeDocElementContent(ctxt->myDoc, last);
if (ret != NULL)
xmlFreeDocElementContent(ctxt->myDoc, ret);
return(NULL);
}
GROW;
SKIP_BLANKS_PE;
GROW;
if (RAW == '(') {
int inputid = ctxt->input->id;
/* Recurse on second child */
NEXT;
SKIP_BLANKS_PE;
last = xmlParseElementChildrenContentDeclPriv(ctxt, inputid,
depth + 1);
if (last == NULL) {
if (ret != NULL)
xmlFreeDocElementContent(ctxt->myDoc, ret);
return(NULL);
}
SKIP_BLANKS_PE;
} else {
elem = xmlParseName(ctxt);
if (elem == NULL) {
xmlFatalErr(ctxt, XML_ERR_ELEMCONTENT_NOT_STARTED, NULL);
if (ret != NULL)
xmlFreeDocElementContent(ctxt->myDoc, ret);
return(NULL);
}
last = xmlNewDocElementContent(ctxt->myDoc, elem, XML_ELEMENT_CONTENT_ELEMENT);
if (last == NULL) {
xmlErrMemory(ctxt);
if (ret != NULL)
xmlFreeDocElementContent(ctxt->myDoc, ret);
return(NULL);
}
if (RAW == '?') {
last->ocur = XML_ELEMENT_CONTENT_OPT;
NEXT;
} else if (RAW == '*') {
last->ocur = XML_ELEMENT_CONTENT_MULT;
NEXT;
} else if (RAW == '+') {
last->ocur = XML_ELEMENT_CONTENT_PLUS;
NEXT;
} else {
last->ocur = XML_ELEMENT_CONTENT_ONCE;
}
}
SKIP_BLANKS_PE;
GROW;
}
if ((cur != NULL) && (last != NULL)) {
cur->c2 = last;
if (last != NULL)
last->parent = cur;
}
if (ctxt->input->id != inputchk) {
xmlFatalErrMsg(ctxt, XML_ERR_ENTITY_BOUNDARY,
"Element content declaration doesn't start and stop in"
" the same entity\n");
}
NEXT;
if (RAW == '?') {
if (ret != NULL) {
if ((ret->ocur == XML_ELEMENT_CONTENT_PLUS) ||
(ret->ocur == XML_ELEMENT_CONTENT_MULT))
ret->ocur = XML_ELEMENT_CONTENT_MULT;
else
ret->ocur = XML_ELEMENT_CONTENT_OPT;
}
NEXT;
} else if (RAW == '*') {
if (ret != NULL) {
ret->ocur = XML_ELEMENT_CONTENT_MULT;
cur = ret;
/*
* Some normalization:
* (a | b* | c?)* == (a | b | c)*
*/
while ((cur != NULL) && (cur->type == XML_ELEMENT_CONTENT_OR)) {
if ((cur->c1 != NULL) &&
((cur->c1->ocur == XML_ELEMENT_CONTENT_OPT) ||
(cur->c1->ocur == XML_ELEMENT_CONTENT_MULT)))
cur->c1->ocur = XML_ELEMENT_CONTENT_ONCE;
if ((cur->c2 != NULL) &&
((cur->c2->ocur == XML_ELEMENT_CONTENT_OPT) ||
(cur->c2->ocur == XML_ELEMENT_CONTENT_MULT)))
cur->c2->ocur = XML_ELEMENT_CONTENT_ONCE;
cur = cur->c2;
}
}
NEXT;
} else if (RAW == '+') {
if (ret != NULL) {
int found = 0;
if ((ret->ocur == XML_ELEMENT_CONTENT_OPT) ||
(ret->ocur == XML_ELEMENT_CONTENT_MULT))
ret->ocur = XML_ELEMENT_CONTENT_MULT;
else
ret->ocur = XML_ELEMENT_CONTENT_PLUS;
/*
* Some normalization:
* (a | b*)+ == (a | b)*
* (a | b?)+ == (a | b)*
*/
while ((cur != NULL) && (cur->type == XML_ELEMENT_CONTENT_OR)) {
if ((cur->c1 != NULL) &&
((cur->c1->ocur == XML_ELEMENT_CONTENT_OPT) ||
(cur->c1->ocur == XML_ELEMENT_CONTENT_MULT))) {
cur->c1->ocur = XML_ELEMENT_CONTENT_ONCE;
found = 1;
}
if ((cur->c2 != NULL) &&
((cur->c2->ocur == XML_ELEMENT_CONTENT_OPT) ||
(cur->c2->ocur == XML_ELEMENT_CONTENT_MULT))) {
cur->c2->ocur = XML_ELEMENT_CONTENT_ONCE;
found = 1;
}
cur = cur->c2;
}
if (found)
ret->ocur = XML_ELEMENT_CONTENT_MULT;
}
NEXT;
}
return(ret);
}
/**
* xmlParseElementChildrenContentDecl:
* @ctxt: an XML parser context
* @inputchk: the input used for the current entity, needed for boundary checks
*
* DEPRECATED: Internal function, don't use.
*
* parse the declaration for a Mixed Element content
* The leading '(' and spaces have been skipped in xmlParseElementContentDecl
*
* [47] children ::= (choice | seq) ('?' | '*' | '+')?
*
* [48] cp ::= (Name | choice | seq) ('?' | '*' | '+')?
*
* [49] choice ::= '(' S? cp ( S? '|' S? cp )* S? ')'
*
* [50] seq ::= '(' S? cp ( S? ',' S? cp )* S? ')'
*
* [ VC: Proper Group/PE Nesting ] applies to [49] and [50]
* TODO Parameter-entity replacement text must be properly nested
* with parenthesized groups. That is to say, if either of the
* opening or closing parentheses in a choice, seq, or Mixed
* construct is contained in the replacement text for a parameter
* entity, both must be contained in the same replacement text. For
* interoperability, if a parameter-entity reference appears in a
* choice, seq, or Mixed construct, its replacement text should not
* be empty, and neither the first nor last non-blank character of
* the replacement text should be a connector (| or ,).
*
* Returns the tree of xmlElementContentPtr describing the element
* hierarchy.
*/
xmlElementContentPtr
xmlParseElementChildrenContentDecl(xmlParserCtxtPtr ctxt, int inputchk) {
/* stub left for API/ABI compat */
return(xmlParseElementChildrenContentDeclPriv(ctxt, inputchk, 1));
}
/**
* xmlParseElementContentDecl:
* @ctxt: an XML parser context
* @name: the name of the element being defined.
* @result: the Element Content pointer will be stored here if any
*
* DEPRECATED: Internal function, don't use.
*
* parse the declaration for an Element content either Mixed or Children,
* the cases EMPTY and ANY are handled directly in xmlParseElementDecl
*
* [46] contentspec ::= 'EMPTY' | 'ANY' | Mixed | children
*
* returns: the type of element content XML_ELEMENT_TYPE_xxx
*/
int
xmlParseElementContentDecl(xmlParserCtxtPtr ctxt, const xmlChar *name,
xmlElementContentPtr *result) {
xmlElementContentPtr tree = NULL;
int inputid = ctxt->input->id;
int res;
*result = NULL;
if (RAW != '(') {
xmlFatalErrMsgStr(ctxt, XML_ERR_ELEMCONTENT_NOT_STARTED,
"xmlParseElementContentDecl : %s '(' expected\n", name);
return(-1);
}
NEXT;
GROW;
SKIP_BLANKS_PE;
if (CMP7(CUR_PTR, '#', 'P', 'C', 'D', 'A', 'T', 'A')) {
tree = xmlParseElementMixedContentDecl(ctxt, inputid);
res = XML_ELEMENT_TYPE_MIXED;
} else {
tree = xmlParseElementChildrenContentDeclPriv(ctxt, inputid, 1);
res = XML_ELEMENT_TYPE_ELEMENT;
}
SKIP_BLANKS_PE;
*result = tree;
return(res);
}
/**
* xmlParseElementDecl:
* @ctxt: an XML parser context
*
* DEPRECATED: Internal function, don't use.
*
* Parse an element declaration. Always consumes '<!'.
*
* [45] elementdecl ::= '<!ELEMENT' S Name S contentspec S? '>'
*
* [ VC: Unique Element Type Declaration ]
* No element type may be declared more than once
*
* Returns the type of the element, or -1 in case of error
*/
int
xmlParseElementDecl(xmlParserCtxtPtr ctxt) {
const xmlChar *name;
int ret = -1;
xmlElementContentPtr content = NULL;
if ((CUR != '<') || (NXT(1) != '!'))
return(ret);
SKIP(2);
/* GROW; done in the caller */
if (CMP7(CUR_PTR, 'E', 'L', 'E', 'M', 'E', 'N', 'T')) {
int inputid = ctxt->input->id;
SKIP(7);
if (SKIP_BLANKS_PE == 0) {
xmlFatalErrMsg(ctxt, XML_ERR_SPACE_REQUIRED,
"Space required after 'ELEMENT'\n");
return(-1);
}
name = xmlParseName(ctxt);
if (name == NULL) {
xmlFatalErrMsg(ctxt, XML_ERR_NAME_REQUIRED,
"xmlParseElementDecl: no name for Element\n");
return(-1);
}
if (SKIP_BLANKS_PE == 0) {
xmlFatalErrMsg(ctxt, XML_ERR_SPACE_REQUIRED,
"Space required after the element name\n");
}
if (CMP5(CUR_PTR, 'E', 'M', 'P', 'T', 'Y')) {
SKIP(5);
/*
* Element must always be empty.
*/
ret = XML_ELEMENT_TYPE_EMPTY;
} else if ((RAW == 'A') && (NXT(1) == 'N') &&
(NXT(2) == 'Y')) {
SKIP(3);
/*
* Element is a generic container.
*/
ret = XML_ELEMENT_TYPE_ANY;
} else if (RAW == '(') {
ret = xmlParseElementContentDecl(ctxt, name, &content);
} else {
/*
* [ WFC: PEs in Internal Subset ] error handling.
*/
xmlFatalErrMsg(ctxt, XML_ERR_ELEMCONTENT_NOT_STARTED,
"xmlParseElementDecl: 'EMPTY', 'ANY' or '(' expected\n");
return(-1);
}
SKIP_BLANKS_PE;
if (RAW != '>') {
xmlFatalErr(ctxt, XML_ERR_GT_REQUIRED, NULL);
if (content != NULL) {
xmlFreeDocElementContent(ctxt->myDoc, content);
}
} else {
if (inputid != ctxt->input->id) {
xmlFatalErrMsg(ctxt, XML_ERR_ENTITY_BOUNDARY,
"Element declaration doesn't start and stop in"
" the same entity\n");
}
NEXT;
if ((ctxt->sax != NULL) && (!ctxt->disableSAX) &&
(ctxt->sax->elementDecl != NULL)) {
if (content != NULL)
content->parent = NULL;
ctxt->sax->elementDecl(ctxt->userData, name, ret,
content);
if ((content != NULL) && (content->parent == NULL)) {
/*
* this is a trick: if xmlAddElementDecl is called,
* instead of copying the full tree it is plugged directly
* if called from the parser. Avoid duplicating the
* interfaces or change the API/ABI
*/
xmlFreeDocElementContent(ctxt->myDoc, content);
}
} else if (content != NULL) {
xmlFreeDocElementContent(ctxt->myDoc, content);
}
}
}
return(ret);
}
/**
* xmlParseConditionalSections
* @ctxt: an XML parser context
*
* Parse a conditional section. Always consumes '<!['.
*
* [61] conditionalSect ::= includeSect | ignoreSect
* [62] includeSect ::= '<![' S? 'INCLUDE' S? '[' extSubsetDecl ']]>'
* [63] ignoreSect ::= '<![' S? 'IGNORE' S? '[' ignoreSectContents* ']]>'
* [64] ignoreSectContents ::= Ignore ('<![' ignoreSectContents ']]>' Ignore)*
* [65] Ignore ::= Char* - (Char* ('<![' | ']]>') Char*)
*/
static void
xmlParseConditionalSections(xmlParserCtxtPtr ctxt) {
int *inputIds = NULL;
size_t inputIdsSize = 0;
size_t depth = 0;
while (PARSER_STOPPED(ctxt) == 0) {
if ((RAW == '<') && (NXT(1) == '!') && (NXT(2) == '[')) {
int id = ctxt->input->id;
SKIP(3);
SKIP_BLANKS_PE;
if (CMP7(CUR_PTR, 'I', 'N', 'C', 'L', 'U', 'D', 'E')) {
SKIP(7);
SKIP_BLANKS_PE;
if (RAW != '[') {
xmlFatalErr(ctxt, XML_ERR_CONDSEC_INVALID, NULL);
xmlHaltParser(ctxt);
goto error;
}
if (ctxt->input->id != id) {
xmlFatalErrMsg(ctxt, XML_ERR_ENTITY_BOUNDARY,
"All markup of the conditional section is"
" not in the same entity\n");
}
NEXT;
if (inputIdsSize <= depth) {
int *tmp;
inputIdsSize = (inputIdsSize == 0 ? 4 : inputIdsSize * 2);
tmp = (int *) xmlRealloc(inputIds,
inputIdsSize * sizeof(int));
if (tmp == NULL) {
xmlErrMemory(ctxt);
goto error;
}
inputIds = tmp;
}
inputIds[depth] = id;
depth++;
} else if (CMP6(CUR_PTR, 'I', 'G', 'N', 'O', 'R', 'E')) {
size_t ignoreDepth = 0;
SKIP(6);
SKIP_BLANKS_PE;
if (RAW != '[') {
xmlFatalErr(ctxt, XML_ERR_CONDSEC_INVALID, NULL);
xmlHaltParser(ctxt);
goto error;
}
if (ctxt->input->id != id) {
xmlFatalErrMsg(ctxt, XML_ERR_ENTITY_BOUNDARY,
"All markup of the conditional section is"
" not in the same entity\n");
}
NEXT;
while (PARSER_STOPPED(ctxt) == 0) {
if (RAW == 0) {
xmlFatalErr(ctxt, XML_ERR_CONDSEC_NOT_FINISHED, NULL);
goto error;
}
if ((RAW == '<') && (NXT(1) == '!') && (NXT(2) == '[')) {
SKIP(3);
ignoreDepth++;
/* Check for integer overflow */
if (ignoreDepth == 0) {
xmlErrMemory(ctxt);
goto error;
}
} else if ((RAW == ']') && (NXT(1) == ']') &&
(NXT(2) == '>')) {
SKIP(3);
if (ignoreDepth == 0)
break;
ignoreDepth--;
} else {
NEXT;
}
}
if (ctxt->input->id != id) {
xmlFatalErrMsg(ctxt, XML_ERR_ENTITY_BOUNDARY,
"All markup of the conditional section is"
" not in the same entity\n");
}
} else {
xmlFatalErr(ctxt, XML_ERR_CONDSEC_INVALID_KEYWORD, NULL);
xmlHaltParser(ctxt);
goto error;
}
} else if ((depth > 0) &&
(RAW == ']') && (NXT(1) == ']') && (NXT(2) == '>')) {
depth--;
if (ctxt->input->id != inputIds[depth]) {
xmlFatalErrMsg(ctxt, XML_ERR_ENTITY_BOUNDARY,
"All markup of the conditional section is not"
" in the same entity\n");
}
SKIP(3);
} else if ((RAW == '<') && ((NXT(1) == '!') || (NXT(1) == '?'))) {
xmlParseMarkupDecl(ctxt);
} else {
xmlFatalErr(ctxt, XML_ERR_EXT_SUBSET_NOT_FINISHED, NULL);
xmlHaltParser(ctxt);
goto error;
}
if (depth == 0)
break;
SKIP_BLANKS_PE;
SHRINK;
GROW;
}
error:
xmlFree(inputIds);
}
/**
* xmlParseMarkupDecl:
* @ctxt: an XML parser context
*
* DEPRECATED: Internal function, don't use.
*
* Parse markup declarations. Always consumes '<!' or '<?'.
*
* [29] markupdecl ::= elementdecl | AttlistDecl | EntityDecl |
* NotationDecl | PI | Comment
*
* [ VC: Proper Declaration/PE Nesting ]
* Parameter-entity replacement text must be properly nested with
* markup declarations. That is to say, if either the first character
* or the last character of a markup declaration (markupdecl above) is
* contained in the replacement text for a parameter-entity reference,
* both must be contained in the same replacement text.
*
* [ WFC: PEs in Internal Subset ]
* In the internal DTD subset, parameter-entity references can occur
* only where markup declarations can occur, not within markup declarations.
* (This does not apply to references that occur in external parameter
* entities or to the external subset.)
*/
void
xmlParseMarkupDecl(xmlParserCtxtPtr ctxt) {
GROW;
if (CUR == '<') {
if (NXT(1) == '!') {
switch (NXT(2)) {
case 'E':
if (NXT(3) == 'L')
xmlParseElementDecl(ctxt);
else if (NXT(3) == 'N')
xmlParseEntityDecl(ctxt);
else
SKIP(2);
break;
case 'A':
xmlParseAttributeListDecl(ctxt);
break;
case 'N':
xmlParseNotationDecl(ctxt);
break;
case '-':
xmlParseComment(ctxt);
break;
default:
/* there is an error but it will be detected later */
SKIP(2);
break;
}
} else if (NXT(1) == '?') {
xmlParsePI(ctxt);
}
}
}
/**
* xmlParseTextDecl:
* @ctxt: an XML parser context
*
* DEPRECATED: Internal function, don't use.
*
* parse an XML declaration header for external entities
*
* [77] TextDecl ::= '<?xml' VersionInfo? EncodingDecl S? '?>'
*/
void
xmlParseTextDecl(xmlParserCtxtPtr ctxt) {
xmlChar *version;
/*
* We know that '<?xml' is here.
*/
if ((CMP5(CUR_PTR, '<', '?', 'x', 'm', 'l')) && (IS_BLANK_CH(NXT(5)))) {
SKIP(5);
} else {
xmlFatalErr(ctxt, XML_ERR_XMLDECL_NOT_STARTED, NULL);
return;
}
if (SKIP_BLANKS == 0) {
xmlFatalErrMsg(ctxt, XML_ERR_SPACE_REQUIRED,
"Space needed after '<?xml'\n");
}
/*
* We may have the VersionInfo here.
*/
version = xmlParseVersionInfo(ctxt);
if (version == NULL) {
version = xmlCharStrdup(XML_DEFAULT_VERSION);
if (version == NULL) {
xmlErrMemory(ctxt);
return;
}
} else {
if (SKIP_BLANKS == 0) {
xmlFatalErrMsg(ctxt, XML_ERR_SPACE_REQUIRED,
"Space needed here\n");
}
}
ctxt->input->version = version;
/*
* We must have the encoding declaration
*/
xmlParseEncodingDecl(ctxt);
SKIP_BLANKS;
if ((RAW == '?') && (NXT(1) == '>')) {
SKIP(2);
} else if (RAW == '>') {
/* Deprecated old WD ... */
xmlFatalErr(ctxt, XML_ERR_XMLDECL_NOT_FINISHED, NULL);
NEXT;
} else {
int c;
xmlFatalErr(ctxt, XML_ERR_XMLDECL_NOT_FINISHED, NULL);
while ((PARSER_STOPPED(ctxt) == 0) && ((c = CUR) != 0)) {
NEXT;
if (c == '>')
break;
}
}
}
/**
* xmlParseExternalSubset:
* @ctxt: an XML parser context
* @ExternalID: the external identifier
* @SystemID: the system identifier (or URL)
*
* parse Markup declarations from an external subset
*
* [30] extSubset ::= textDecl? extSubsetDecl
*
* [31] extSubsetDecl ::= (markupdecl | conditionalSect | PEReference | S) *
*/
void
xmlParseExternalSubset(xmlParserCtxtPtr ctxt, const xmlChar *ExternalID,
const xmlChar *SystemID) {
int oldInputNr;
xmlCtxtInitializeLate(ctxt);
xmlDetectEncoding(ctxt);
if (CMP5(CUR_PTR, '<', '?', 'x', 'm', 'l')) {
xmlParseTextDecl(ctxt);
}
if (ctxt->myDoc == NULL) {
ctxt->myDoc = xmlNewDoc(BAD_CAST "1.0");
if (ctxt->myDoc == NULL) {
xmlErrMemory(ctxt);
return;
}
ctxt->myDoc->properties = XML_DOC_INTERNAL;
}
if ((ctxt->myDoc != NULL) && (ctxt->myDoc->intSubset == NULL) &&
(xmlCreateIntSubset(ctxt->myDoc, NULL, ExternalID, SystemID) == NULL)) {
xmlErrMemory(ctxt);
}
ctxt->inSubset = 2;
oldInputNr = ctxt->inputNr;
SKIP_BLANKS_PE;
while (((RAW != 0) || (ctxt->inputNr > oldInputNr)) &&
(!PARSER_STOPPED(ctxt))) {
GROW;
if ((RAW == '<') && (NXT(1) == '!') && (NXT(2) == '[')) {
xmlParseConditionalSections(ctxt);
} else if ((RAW == '<') && ((NXT(1) == '!') || (NXT(1) == '?'))) {
xmlParseMarkupDecl(ctxt);
} else {
xmlFatalErr(ctxt, XML_ERR_EXT_SUBSET_NOT_FINISHED, NULL);
xmlHaltParser(ctxt);
return;
}
SKIP_BLANKS_PE;
SHRINK;
}
while (ctxt->inputNr > oldInputNr)
xmlPopPE(ctxt);
if (RAW != 0) {
xmlFatalErr(ctxt, XML_ERR_EXT_SUBSET_NOT_FINISHED, NULL);
}
}
/**
* xmlParseReference:
* @ctxt: an XML parser context
*
* DEPRECATED: Internal function, don't use.
*
* parse and handle entity references in content, depending on the SAX
* interface, this may end-up in a call to character() if this is a
* CharRef, a predefined entity, if there is no reference() callback.
* or if the parser was asked to switch to that mode.
*
* Always consumes '&'.
*
* [67] Reference ::= EntityRef | CharRef
*/
void
xmlParseReference(xmlParserCtxtPtr ctxt) {
xmlEntityPtr ent = NULL;
const xmlChar *name;
xmlChar *val;
if (RAW != '&')
return;
/*
* Simple case of a CharRef
*/
if (NXT(1) == '#') {
int i = 0;
xmlChar out[16];
int value = xmlParseCharRef(ctxt);
if (value == 0)
return;
/*
* Just encode the value in UTF-8
*/
COPY_BUF(out, i, value);
out[i] = 0;
if ((ctxt->sax != NULL) && (ctxt->sax->characters != NULL) &&
(!ctxt->disableSAX))
ctxt->sax->characters(ctxt->userData, out, i);
return;
}
/*
* We are seeing an entity reference
*/
name = xmlParseEntityRefInternal(ctxt);
if (name == NULL)
return;
ent = xmlLookupGeneralEntity(ctxt, name, /* isAttr */ 0);
if (ent == NULL) {
/*
* Create a reference for undeclared entities.
*/
if ((ctxt->replaceEntities == 0) &&
(ctxt->sax != NULL) &&
(ctxt->disableSAX == 0) &&
(ctxt->sax->reference != NULL)) {
ctxt->sax->reference(ctxt->userData, name);
}
return;
}
if (!ctxt->wellFormed)
return;
/* special case of predefined entities */
if ((ent->name == NULL) ||
(ent->etype == XML_INTERNAL_PREDEFINED_ENTITY)) {
val = ent->content;
if (val == NULL) return;
/*
* inline the entity.
*/
if ((ctxt->sax != NULL) && (ctxt->sax->characters != NULL) &&
(!ctxt->disableSAX))
ctxt->sax->characters(ctxt->userData, val, xmlStrlen(val));
return;
}
/*
* The first reference to the entity trigger a parsing phase
* where the ent->children is filled with the result from
* the parsing.
* Note: external parsed entities will not be loaded, it is not
* required for a non-validating parser, unless the parsing option
* of validating, or substituting entities were given. Doing so is
* far more secure as the parser will only process data coming from
* the document entity by default.
*
* FIXME: This doesn't work correctly since entities can be
* expanded with different namespace declarations in scope.
* For example:
*
* <!DOCTYPE doc [
* <!ENTITY ent "<ns:elem/>">
* ]>
* <doc>
* <decl1 xmlns:ns="urn:ns1">
* &ent;
* </decl1>
* <decl2 xmlns:ns="urn:ns2">
* &ent;
* </decl2>
* </doc>
*
* Proposed fix:
*
* - Ignore current namespace declarations when parsing the
* entity. If a prefix can't be resolved, don't report an error
* but mark it as unresolved.
* - Try to resolve these prefixes when expanding the entity.
* This will require a specialized version of xmlStaticCopyNode
* which can also make use of the namespace hash table to avoid
* quadratic behavior.
*
* Alternatively, we could simply reparse the entity on each
* expansion like we already do with custom SAX callbacks.
* External entity content should be cached in this case.
*/
if ((ent->etype == XML_INTERNAL_GENERAL_ENTITY) ||
(((ctxt->options & XML_PARSE_NO_XXE) == 0) &&
((ctxt->replaceEntities) ||
(ctxt->validate)))) {
if ((ent->flags & XML_ENT_PARSED) == 0) {
xmlCtxtParseEntity(ctxt, ent);
} else if (ent->children == NULL) {
/*
* Probably running in SAX mode and the callbacks don't
* build the entity content. Parse the entity again.
*
* This will also be triggered in normal tree builder mode
* if an entity happens to be empty, causing unnecessary
* reloads. It's hard to come up with a reliable check in
* which mode we're running.
*/
xmlCtxtParseEntity(ctxt, ent);
}
}
/*
* We also check for amplification if entities aren't substituted.
* They might be expanded later.
*/
if (xmlParserEntityCheck(ctxt, ent->expandedSize))
return;
if ((ctxt->sax == NULL) || (ctxt->disableSAX))
return;
if (ctxt->replaceEntities == 0) {
/*
* Create a reference
*/
if (ctxt->sax->reference != NULL)
ctxt->sax->reference(ctxt->userData, ent->name);
} else if ((ent->children != NULL) && (ctxt->node != NULL)) {
xmlNodePtr copy, cur;
/*
* Seems we are generating the DOM content, copy the tree
*/
cur = ent->children;
/*
* Handle first text node with SAX to coalesce text efficiently
*/
if ((cur->type == XML_TEXT_NODE) ||
(cur->type == XML_CDATA_SECTION_NODE)) {
int len = xmlStrlen(cur->content);
if ((cur->type == XML_TEXT_NODE) ||
(ctxt->sax->cdataBlock == NULL)) {
if (ctxt->sax->characters != NULL)
ctxt->sax->characters(ctxt, cur->content, len);
} else {
if (ctxt->sax->cdataBlock != NULL)
ctxt->sax->cdataBlock(ctxt, cur->content, len);
}
cur = cur->next;
}
while (cur != NULL) {
xmlNodePtr last;
/*
* Handle last text node with SAX to coalesce text efficiently
*/
if ((cur->next == NULL) &&
((cur->type == XML_TEXT_NODE) ||
(cur->type == XML_CDATA_SECTION_NODE))) {
int len = xmlStrlen(cur->content);
if ((cur->type == XML_TEXT_NODE) ||
(ctxt->sax->cdataBlock == NULL)) {
if (ctxt->sax->characters != NULL)
ctxt->sax->characters(ctxt, cur->content, len);
} else {
if (ctxt->sax->cdataBlock != NULL)
ctxt->sax->cdataBlock(ctxt, cur->content, len);
}
break;
}
/*
* Reset coalesce buffer stats only for non-text nodes.
*/
ctxt->nodemem = 0;
ctxt->nodelen = 0;
copy = xmlDocCopyNode(cur, ctxt->myDoc, 1);
if (copy == NULL) {
xmlErrMemory(ctxt);
break;
}
if (ctxt->parseMode == XML_PARSE_READER) {
/* Needed for reader */
copy->extra = cur->extra;
/* Maybe needed for reader */
copy->_private = cur->_private;
}
copy->parent = ctxt->node;
last = ctxt->node->last;
if (last == NULL) {
ctxt->node->children = copy;
} else {
last->next = copy;
copy->prev = last;
}
ctxt->node->last = copy;
cur = cur->next;
}
}
}
static void
xmlHandleUndeclaredEntity(xmlParserCtxtPtr ctxt, const xmlChar *name) {
/*
* [ WFC: Entity Declared ]
* In a document without any DTD, a document with only an
* internal DTD subset which contains no parameter entity
* references, or a document with "standalone='yes'", the
* Name given in the entity reference must match that in an
* entity declaration, except that well-formed documents
* need not declare any of the following entities: amp, lt,
* gt, apos, quot.
* The declaration of a parameter entity must precede any
* reference to it.
* Similarly, the declaration of a general entity must
* precede any reference to it which appears in a default
* value in an attribute-list declaration. Note that if
* entities are declared in the external subset or in
* external parameter entities, a non-validating processor
* is not obligated to read and process their declarations;
* for such documents, the rule that an entity must be
* declared is a well-formedness constraint only if
* standalone='yes'.
*/
if ((ctxt->standalone == 1) ||
((ctxt->hasExternalSubset == 0) &&
(ctxt->hasPErefs == 0))) {
xmlFatalErrMsgStr(ctxt, XML_ERR_UNDECLARED_ENTITY,
"Entity '%s' not defined\n", name);
} else if (ctxt->validate) {
/*
* [ VC: Entity Declared ]
* In a document with an external subset or external
* parameter entities with "standalone='no'", ...
* ... The declaration of a parameter entity must
* precede any reference to it...
*/
xmlValidityError(ctxt, XML_ERR_UNDECLARED_ENTITY,
"Entity '%s' not defined\n", name, NULL);
} else if ((ctxt->loadsubset) ||
((ctxt->replaceEntities) &&
((ctxt->options & XML_PARSE_NO_XXE) == 0))) {
/*
* Also raise a non-fatal error
*
* - if the external subset is loaded and all entity declarations
* should be available, or
* - entity substition was requested without restricting
* external entity access.
*/
xmlErrMsgStr(ctxt, XML_WAR_UNDECLARED_ENTITY,
"Entity '%s' not defined\n", name);
} else {
xmlWarningMsg(ctxt, XML_WAR_UNDECLARED_ENTITY,
"Entity '%s' not defined\n", name, NULL);
}
ctxt->valid = 0;
}
static xmlEntityPtr
xmlLookupGeneralEntity(xmlParserCtxtPtr ctxt, const xmlChar *name, int inAttr) {
xmlEntityPtr ent;
/*
* Predefined entities override any extra definition
*/
if ((ctxt->options & XML_PARSE_OLDSAX) == 0) {
ent = xmlGetPredefinedEntity(name);
if (ent != NULL)
return(ent);
}
/*
* Ask first SAX for entity resolution, otherwise try the
* entities which may have stored in the parser context.
*/
if (ctxt->sax != NULL) {
if (ctxt->sax->getEntity != NULL)
ent = ctxt->sax->getEntity(ctxt->userData, name);
if ((ctxt->wellFormed == 1 ) && (ent == NULL) &&
(ctxt->options & XML_PARSE_OLDSAX))
ent = xmlGetPredefinedEntity(name);
if ((ctxt->wellFormed == 1 ) && (ent == NULL) &&
(ctxt->userData==ctxt)) {
ent = xmlSAX2GetEntity(ctxt, name);
}
}
if (ent == NULL) {
xmlHandleUndeclaredEntity(ctxt, name);
}
/*
* [ WFC: Parsed Entity ]
* An entity reference must not contain the name of an
* unparsed entity
*/
else if (ent->etype == XML_EXTERNAL_GENERAL_UNPARSED_ENTITY) {
xmlFatalErrMsgStr(ctxt, XML_ERR_UNPARSED_ENTITY,
"Entity reference to unparsed entity %s\n", name);
ent = NULL;
}
/*
* [ WFC: No External Entity References ]
* Attribute values cannot contain direct or indirect
* entity references to external entities.
*/
else if (ent->etype == XML_EXTERNAL_GENERAL_PARSED_ENTITY) {
if (inAttr) {
xmlFatalErrMsgStr(ctxt, XML_ERR_ENTITY_IS_EXTERNAL,
"Attribute references external entity '%s'\n", name);
ent = NULL;
}
}
return(ent);
}
/**
* xmlParseEntityRefInternal:
* @ctxt: an XML parser context
* @inAttr: whether we are in an attribute value
*
* Parse an entity reference. Always consumes '&'.
*
* [68] EntityRef ::= '&' Name ';'
*
* Returns the name, or NULL in case of error.
*/
static const xmlChar *
xmlParseEntityRefInternal(xmlParserCtxtPtr ctxt) {
const xmlChar *name;
GROW;
if (RAW != '&')
return(NULL);
NEXT;
name = xmlParseName(ctxt);
if (name == NULL) {
xmlFatalErrMsg(ctxt, XML_ERR_NAME_REQUIRED,
"xmlParseEntityRef: no name\n");
return(NULL);
}
if (RAW != ';') {
xmlFatalErr(ctxt, XML_ERR_ENTITYREF_SEMICOL_MISSING, NULL);
return(NULL);
}
NEXT;
return(name);
}
/**
* xmlParseEntityRef:
* @ctxt: an XML parser context
*
* DEPRECATED: Internal function, don't use.
*
* Returns the xmlEntityPtr if found, or NULL otherwise.
*/
xmlEntityPtr
xmlParseEntityRef(xmlParserCtxtPtr ctxt) {
const xmlChar *name;
if (ctxt == NULL)
return(NULL);
name = xmlParseEntityRefInternal(ctxt);
if (name == NULL)
return(NULL);
return(xmlLookupGeneralEntity(ctxt, name, /* inAttr */ 0));
}
/**
* xmlParseStringEntityRef:
* @ctxt: an XML parser context
* @str: a pointer to an index in the string
*
* parse ENTITY references declarations, but this version parses it from
* a string value.
*
* [68] EntityRef ::= '&' Name ';'
*
* [ WFC: Entity Declared ]
* In a document without any DTD, a document with only an internal DTD
* subset which contains no parameter entity references, or a document
* with "standalone='yes'", the Name given in the entity reference
* must match that in an entity declaration, except that well-formed
* documents need not declare any of the following entities: amp, lt,
* gt, apos, quot. The declaration of a parameter entity must precede
* any reference to it. Similarly, the declaration of a general entity
* must precede any reference to it which appears in a default value in an
* attribute-list declaration. Note that if entities are declared in the
* external subset or in external parameter entities, a non-validating
* processor is not obligated to read and process their declarations;
* for such documents, the rule that an entity must be declared is a
* well-formedness constraint only if standalone='yes'.
*
* [ WFC: Parsed Entity ]
* An entity reference must not contain the name of an unparsed entity
*
* Returns the xmlEntityPtr if found, or NULL otherwise. The str pointer
* is updated to the current location in the string.
*/
static xmlChar *
xmlParseStringEntityRef(xmlParserCtxtPtr ctxt, const xmlChar ** str) {
xmlChar *name;
const xmlChar *ptr;
xmlChar cur;
if ((str == NULL) || (*str == NULL))
return(NULL);
ptr = *str;
cur = *ptr;
if (cur != '&')
return(NULL);
ptr++;
name = xmlParseStringName(ctxt, &ptr);
if (name == NULL) {
xmlFatalErrMsg(ctxt, XML_ERR_NAME_REQUIRED,
"xmlParseStringEntityRef: no name\n");
*str = ptr;
return(NULL);
}
if (*ptr != ';') {
xmlFatalErr(ctxt, XML_ERR_ENTITYREF_SEMICOL_MISSING, NULL);
xmlFree(name);
*str = ptr;
return(NULL);
}
ptr++;
*str = ptr;
return(name);
}
/**
* xmlParsePEReference:
* @ctxt: an XML parser context
*
* DEPRECATED: Internal function, don't use.
*
* Parse a parameter entity reference. Always consumes '%'.
*
* The entity content is handled directly by pushing it's content as
* a new input stream.
*
* [69] PEReference ::= '%' Name ';'
*
* [ WFC: No Recursion ]
* A parsed entity must not contain a recursive
* reference to itself, either directly or indirectly.
*
* [ WFC: Entity Declared ]
* In a document without any DTD, a document with only an internal DTD
* subset which contains no parameter entity references, or a document
* with "standalone='yes'", ... ... The declaration of a parameter
* entity must precede any reference to it...
*
* [ VC: Entity Declared ]
* In a document with an external subset or external parameter entities
* with "standalone='no'", ... ... The declaration of a parameter entity
* must precede any reference to it...
*
* [ WFC: In DTD ]
* Parameter-entity references may only appear in the DTD.
* NOTE: misleading but this is handled.
*/
void
xmlParsePEReference(xmlParserCtxtPtr ctxt)
{
const xmlChar *name;
xmlEntityPtr entity = NULL;
xmlParserInputPtr input;
if (RAW != '%')
return;
NEXT;
name = xmlParseName(ctxt);
if (name == NULL) {
xmlFatalErrMsg(ctxt, XML_ERR_PEREF_NO_NAME, "PEReference: no name\n");
return;
}
if (RAW != ';') {
xmlFatalErr(ctxt, XML_ERR_PEREF_SEMICOL_MISSING, NULL);
return;
}
NEXT;
/* Must be set before xmlHandleUndeclaredEntity */
ctxt->hasPErefs = 1;
/*
* Request the entity from SAX
*/
if ((ctxt->sax != NULL) &&
(ctxt->sax->getParameterEntity != NULL))
entity = ctxt->sax->getParameterEntity(ctxt->userData, name);
if (entity == NULL) {
xmlHandleUndeclaredEntity(ctxt, name);
} else {
/*
* Internal checking in case the entity quest barfed
*/
if ((entity->etype != XML_INTERNAL_PARAMETER_ENTITY) &&
(entity->etype != XML_EXTERNAL_PARAMETER_ENTITY)) {
xmlWarningMsg(ctxt, XML_WAR_UNDECLARED_ENTITY,
"Internal: %%%s; is not a parameter entity\n",
name, NULL);
} else {
if ((entity->etype == XML_EXTERNAL_PARAMETER_ENTITY) &&
((ctxt->options & XML_PARSE_NO_XXE) ||
((ctxt->loadsubset == 0) &&
(ctxt->replaceEntities == 0) &&
(ctxt->validate == 0))))
return;
if (entity->flags & XML_ENT_EXPANDING) {
xmlFatalErr(ctxt, XML_ERR_ENTITY_LOOP, NULL);
xmlHaltParser(ctxt);
return;
}
if (ctxt->input_id >= INT_MAX) {
xmlFatalErr(ctxt, XML_ERR_RESOURCE_LIMIT,
"Input ID overflow\n");
return;
}
input = xmlNewEntityInputStream(ctxt, entity);
if (xmlPushInput(ctxt, input) < 0) {
xmlFreeInputStream(input);
return;
}
input->id = ++ctxt->input_id;
entity->flags |= XML_ENT_EXPANDING;
if (entity->etype == XML_EXTERNAL_PARAMETER_ENTITY) {
xmlDetectEncoding(ctxt);
if ((CMP5(CUR_PTR, '<', '?', 'x', 'm', 'l')) &&
(IS_BLANK_CH(NXT(5)))) {
xmlParseTextDecl(ctxt);
}
}
}
}
}
/**
* xmlLoadEntityContent:
* @ctxt: an XML parser context
* @entity: an unloaded system entity
*
* Load the content of an entity.
*
* Returns 0 in case of success and -1 in case of failure
*/
static int
xmlLoadEntityContent(xmlParserCtxtPtr ctxt, xmlEntityPtr entity) {
xmlParserInputPtr oldinput, input = NULL;
xmlParserInputPtr *oldinputTab;
const xmlChar *oldencoding;
xmlChar *content = NULL;
xmlResourceType rtype;
size_t length, i;
int oldinputNr, oldinputMax;
int ret = -1;
int res;
if ((ctxt == NULL) || (entity == NULL) ||
((entity->etype != XML_EXTERNAL_PARAMETER_ENTITY) &&
(entity->etype != XML_EXTERNAL_GENERAL_PARSED_ENTITY)) ||
(entity->content != NULL)) {
xmlFatalErr(ctxt, XML_ERR_ARGUMENT,
"xmlLoadEntityContent parameter error");
return(-1);
}
if (entity->etype == XML_EXTERNAL_PARAMETER_ENTITY)
rtype = XML_RESOURCE_PARAMETER_ENTITY;
else
rtype = XML_RESOURCE_GENERAL_ENTITY;
input = xmlLoadResource(ctxt, (char *) entity->URI,
(char *) entity->ExternalID, rtype);
if (input == NULL)
return(-1);
oldinput = ctxt->input;
oldinputNr = ctxt->inputNr;
oldinputMax = ctxt->inputMax;
oldinputTab = ctxt->inputTab;
oldencoding = ctxt->encoding;
ctxt->input = NULL;
ctxt->inputNr = 0;
ctxt->inputMax = 1;
ctxt->encoding = NULL;
ctxt->inputTab = xmlMalloc(sizeof(xmlParserInputPtr));
if (ctxt->inputTab == NULL) {
xmlErrMemory(ctxt);
xmlFreeInputStream(input);
goto error;
}
xmlBufResetInput(input->buf->buffer, input);
inputPush(ctxt, input);
xmlDetectEncoding(ctxt);
/*
* Parse a possible text declaration first
*/
if ((CMP5(CUR_PTR, '<', '?', 'x', 'm', 'l')) && (IS_BLANK_CH(NXT(5)))) {
xmlParseTextDecl(ctxt);
/*
* An XML-1.0 document can't reference an entity not XML-1.0
*/
if ((xmlStrEqual(ctxt->version, BAD_CAST "1.0")) &&
(!xmlStrEqual(ctxt->input->version, BAD_CAST "1.0"))) {
xmlFatalErrMsg(ctxt, XML_ERR_VERSION_MISMATCH,
"Version mismatch between document and entity\n");
}
}
length = input->cur - input->base;
xmlBufShrink(input->buf->buffer, length);
xmlSaturatedAdd(&ctxt->sizeentities, length);
while ((res = xmlParserInputBufferGrow(input->buf, 4096)) > 0)
;
xmlBufResetInput(input->buf->buffer, input);
if (res < 0) {
xmlCtxtErrIO(ctxt, input->buf->error, NULL);
goto error;
}
length = xmlBufUse(input->buf->buffer);
content = xmlBufDetach(input->buf->buffer);
if (length > INT_MAX) {
xmlErrMemory(ctxt);
goto error;
}
for (i = 0; i < length; ) {
int clen = length - i;
int c = xmlGetUTF8Char(content + i, &clen);
if ((c < 0) || (!IS_CHAR(c))) {
xmlFatalErrMsgInt(ctxt, XML_ERR_INVALID_CHAR,
"xmlLoadEntityContent: invalid char value %d\n",
content[i]);
goto error;
}
i += clen;
}
xmlSaturatedAdd(&ctxt->sizeentities, length);
entity->content = content;
entity->length = length;
content = NULL;
ret = 0;
error:
while (ctxt->inputNr > 0)
xmlFreeInputStream(inputPop(ctxt));
xmlFree(ctxt->inputTab);
xmlFree((xmlChar *) ctxt->encoding);
ctxt->input = oldinput;
ctxt->inputNr = oldinputNr;
ctxt->inputMax = oldinputMax;
ctxt->inputTab = oldinputTab;
ctxt->encoding = oldencoding;
xmlFree(content);
return(ret);
}
/**
* xmlParseStringPEReference:
* @ctxt: an XML parser context
* @str: a pointer to an index in the string
*
* parse PEReference declarations
*
* [69] PEReference ::= '%' Name ';'
*
* [ WFC: No Recursion ]
* A parsed entity must not contain a recursive
* reference to itself, either directly or indirectly.
*
* [ WFC: Entity Declared ]
* In a document without any DTD, a document with only an internal DTD
* subset which contains no parameter entity references, or a document
* with "standalone='yes'", ... ... The declaration of a parameter
* entity must precede any reference to it...
*
* [ VC: Entity Declared ]
* In a document with an external subset or external parameter entities
* with "standalone='no'", ... ... The declaration of a parameter entity
* must precede any reference to it...
*
* [ WFC: In DTD ]
* Parameter-entity references may only appear in the DTD.
* NOTE: misleading but this is handled.
*
* Returns the string of the entity content.
* str is updated to the current value of the index
*/
static xmlEntityPtr
xmlParseStringPEReference(xmlParserCtxtPtr ctxt, const xmlChar **str) {
const xmlChar *ptr;
xmlChar cur;
xmlChar *name;
xmlEntityPtr entity = NULL;
if ((str == NULL) || (*str == NULL)) return(NULL);
ptr = *str;
cur = *ptr;
if (cur != '%')
return(NULL);
ptr++;
name = xmlParseStringName(ctxt, &ptr);
if (name == NULL) {
xmlFatalErrMsg(ctxt, XML_ERR_NAME_REQUIRED,
"xmlParseStringPEReference: no name\n");
*str = ptr;
return(NULL);
}
cur = *ptr;
if (cur != ';') {
xmlFatalErr(ctxt, XML_ERR_ENTITYREF_SEMICOL_MISSING, NULL);
xmlFree(name);
*str = ptr;
return(NULL);
}
ptr++;
/* Must be set before xmlHandleUndeclaredEntity */
ctxt->hasPErefs = 1;
/*
* Request the entity from SAX
*/
if ((ctxt->sax != NULL) &&
(ctxt->sax->getParameterEntity != NULL))
entity = ctxt->sax->getParameterEntity(ctxt->userData, name);
if (entity == NULL) {
xmlHandleUndeclaredEntity(ctxt, name);
} else {
/*
* Internal checking in case the entity quest barfed
*/
if ((entity->etype != XML_INTERNAL_PARAMETER_ENTITY) &&
(entity->etype != XML_EXTERNAL_PARAMETER_ENTITY)) {
xmlWarningMsg(ctxt, XML_WAR_UNDECLARED_ENTITY,
"%%%s; is not a parameter entity\n",
name, NULL);
}
}
xmlFree(name);
*str = ptr;
return(entity);
}
/**
* xmlParseDocTypeDecl:
* @ctxt: an XML parser context
*
* DEPRECATED: Internal function, don't use.
*
* parse a DOCTYPE declaration
*
* [28] doctypedecl ::= '<!DOCTYPE' S Name (S ExternalID)? S?
* ('[' (markupdecl | PEReference | S)* ']' S?)? '>'
*
* [ VC: Root Element Type ]
* The Name in the document type declaration must match the element
* type of the root element.
*/
void
xmlParseDocTypeDecl(xmlParserCtxtPtr ctxt) {
const xmlChar *name = NULL;
xmlChar *ExternalID = NULL;
xmlChar *URI = NULL;
/*
* We know that '<!DOCTYPE' has been detected.
*/
SKIP(9);
SKIP_BLANKS;
/*
* Parse the DOCTYPE name.
*/
name = xmlParseName(ctxt);
if (name == NULL) {
xmlFatalErrMsg(ctxt, XML_ERR_NAME_REQUIRED,
"xmlParseDocTypeDecl : no DOCTYPE name !\n");
}
ctxt->intSubName = name;
SKIP_BLANKS;
/*
* Check for SystemID and ExternalID
*/
URI = xmlParseExternalID(ctxt, &ExternalID, 1);
if ((URI != NULL) || (ExternalID != NULL)) {
ctxt->hasExternalSubset = 1;
}
ctxt->extSubURI = URI;
ctxt->extSubSystem = ExternalID;
SKIP_BLANKS;
/*
* Create and update the internal subset.
*/
if ((ctxt->sax != NULL) && (ctxt->sax->internalSubset != NULL) &&
(!ctxt->disableSAX))
ctxt->sax->internalSubset(ctxt->userData, name, ExternalID, URI);
/*
* Is there any internal subset declarations ?
* they are handled separately in xmlParseInternalSubset()
*/
if (RAW == '[')
return;
/*
* We should be at the end of the DOCTYPE declaration.
*/
if (RAW != '>') {
xmlFatalErr(ctxt, XML_ERR_DOCTYPE_NOT_FINISHED, NULL);
}
NEXT;
}
/**
* xmlParseInternalSubset:
* @ctxt: an XML parser context
*
* parse the internal subset declaration
*
* [28 end] ('[' (markupdecl | PEReference | S)* ']' S?)? '>'
*/
static void
xmlParseInternalSubset(xmlParserCtxtPtr ctxt) {
/*
* Is there any DTD definition ?
*/
if (RAW == '[') {
int oldInputNr = ctxt->inputNr;
NEXT;
/*
* Parse the succession of Markup declarations and
* PEReferences.
* Subsequence (markupdecl | PEReference | S)*
*/
SKIP_BLANKS;
while (((RAW != ']') || (ctxt->inputNr > oldInputNr)) &&
(PARSER_STOPPED(ctxt) == 0)) {
/*
* Conditional sections are allowed from external entities included
* by PE References in the internal subset.
*/
if ((PARSER_EXTERNAL(ctxt)) &&
(RAW == '<') && (NXT(1) == '!') && (NXT(2) == '[')) {
xmlParseConditionalSections(ctxt);
} else if ((RAW == '<') && ((NXT(1) == '!') || (NXT(1) == '?'))) {
xmlParseMarkupDecl(ctxt);
} else if (RAW == '%') {
xmlParsePEReference(ctxt);
} else {
xmlFatalErr(ctxt, XML_ERR_INT_SUBSET_NOT_FINISHED, NULL);
break;
}
SKIP_BLANKS_PE;
SHRINK;
GROW;
}
while (ctxt->inputNr > oldInputNr)
xmlPopPE(ctxt);
if (RAW == ']') {
NEXT;
SKIP_BLANKS;
}
}
/*
* We should be at the end of the DOCTYPE declaration.
*/
if ((ctxt->wellFormed) && (RAW != '>')) {
xmlFatalErr(ctxt, XML_ERR_DOCTYPE_NOT_FINISHED, NULL);
return;
}
NEXT;
}
#ifdef LIBXML_SAX1_ENABLED
/**
* xmlParseAttribute:
* @ctxt: an XML parser context
* @value: a xmlChar ** used to store the value of the attribute
*
* DEPRECATED: Internal function, don't use.
*
* parse an attribute
*
* [41] Attribute ::= Name Eq AttValue
*
* [ WFC: No External Entity References ]
* Attribute values cannot contain direct or indirect entity references
* to external entities.
*
* [ WFC: No < in Attribute Values ]
* The replacement text of any entity referred to directly or indirectly in
* an attribute value (other than "&lt;") must not contain a <.
*
* [ VC: Attribute Value Type ]
* The attribute must have been declared; the value must be of the type
* declared for it.
*
* [25] Eq ::= S? '=' S?
*
* With namespace:
*
* [NS 11] Attribute ::= QName Eq AttValue
*
* Also the case QName == xmlns:??? is handled independently as a namespace
* definition.
*
* Returns the attribute name, and the value in *value.
*/
const xmlChar *
xmlParseAttribute(xmlParserCtxtPtr ctxt, xmlChar **value) {
const xmlChar *name;
xmlChar *val;
*value = NULL;
GROW;
name = xmlParseName(ctxt);
if (name == NULL) {
xmlFatalErrMsg(ctxt, XML_ERR_NAME_REQUIRED,
"error parsing attribute name\n");
return(NULL);
}
/*
* read the value
*/
SKIP_BLANKS;
if (RAW == '=') {
NEXT;
SKIP_BLANKS;
val = xmlParseAttValue(ctxt);
} else {
xmlFatalErrMsgStr(ctxt, XML_ERR_ATTRIBUTE_WITHOUT_VALUE,
"Specification mandates value for attribute %s\n", name);
return(name);
}
/*
* Check that xml:lang conforms to the specification
* No more registered as an error, just generate a warning now
* since this was deprecated in XML second edition
*/
if ((ctxt->pedantic) && (xmlStrEqual(name, BAD_CAST "xml:lang"))) {
if (!xmlCheckLanguageID(val)) {
xmlWarningMsg(ctxt, XML_WAR_LANG_VALUE,
"Malformed value for xml:lang : %s\n",
val, NULL);
}
}
/*
* Check that xml:space conforms to the specification
*/
if (xmlStrEqual(name, BAD_CAST "xml:space")) {
if (xmlStrEqual(val, BAD_CAST "default"))
*(ctxt->space) = 0;
else if (xmlStrEqual(val, BAD_CAST "preserve"))
*(ctxt->space) = 1;
else {
xmlWarningMsg(ctxt, XML_WAR_SPACE_VALUE,
"Invalid value \"%s\" for xml:space : \"default\" or \"preserve\" expected\n",
val, NULL);
}
}
*value = val;
return(name);
}
/**
* xmlParseStartTag:
* @ctxt: an XML parser context
*
* DEPRECATED: Internal function, don't use.
*
* Parse a start tag. Always consumes '<'.
*
* [40] STag ::= '<' Name (S Attribute)* S? '>'
*
* [ WFC: Unique Att Spec ]
* No attribute name may appear more than once in the same start-tag or
* empty-element tag.
*
* [44] EmptyElemTag ::= '<' Name (S Attribute)* S? '/>'
*
* [ WFC: Unique Att Spec ]
* No attribute name may appear more than once in the same start-tag or
* empty-element tag.
*
* With namespace:
*
* [NS 8] STag ::= '<' QName (S Attribute)* S? '>'
*
* [NS 10] EmptyElement ::= '<' QName (S Attribute)* S? '/>'
*
* Returns the element name parsed
*/
const xmlChar *
xmlParseStartTag(xmlParserCtxtPtr ctxt) {
const xmlChar *name;
const xmlChar *attname;
xmlChar *attvalue;
const xmlChar **atts = ctxt->atts;
int nbatts = 0;
int maxatts = ctxt->maxatts;
int i;
if (RAW != '<') return(NULL);
NEXT1;
name = xmlParseName(ctxt);
if (name == NULL) {
xmlFatalErrMsg(ctxt, XML_ERR_NAME_REQUIRED,
"xmlParseStartTag: invalid element name\n");
return(NULL);
}
/*
* Now parse the attributes, it ends up with the ending
*
* (S Attribute)* S?
*/
SKIP_BLANKS;
GROW;
while (((RAW != '>') &&
((RAW != '/') || (NXT(1) != '>')) &&
(IS_BYTE_CHAR(RAW))) && (PARSER_STOPPED(ctxt) == 0)) {
attname = xmlParseAttribute(ctxt, &attvalue);
if (attname == NULL)
break;
if (attvalue != NULL) {
/*
* [ WFC: Unique Att Spec ]
* No attribute name may appear more than once in the same
* start-tag or empty-element tag.
*/
for (i = 0; i < nbatts;i += 2) {
if (xmlStrEqual(atts[i], attname)) {
xmlErrAttributeDup(ctxt, NULL, attname);
xmlFree(attvalue);
goto failed;
}
}
/*
* Add the pair to atts
*/
if (atts == NULL) {
maxatts = 22; /* allow for 10 attrs by default */
atts = (const xmlChar **)
xmlMalloc(maxatts * sizeof(xmlChar *));
if (atts == NULL) {
xmlErrMemory(ctxt);
if (attvalue != NULL)
xmlFree(attvalue);
goto failed;
}
ctxt->atts = atts;
ctxt->maxatts = maxatts;
} else if (nbatts + 4 > maxatts) {
const xmlChar **n;
maxatts *= 2;
n = (const xmlChar **) xmlRealloc((void *) atts,
maxatts * sizeof(const xmlChar *));
if (n == NULL) {
xmlErrMemory(ctxt);
if (attvalue != NULL)
xmlFree(attvalue);
goto failed;
}
atts = n;
ctxt->atts = atts;
ctxt->maxatts = maxatts;
}
atts[nbatts++] = attname;
atts[nbatts++] = attvalue;
atts[nbatts] = NULL;
atts[nbatts + 1] = NULL;
} else {
if (attvalue != NULL)
xmlFree(attvalue);
}
failed:
GROW
if ((RAW == '>') || (((RAW == '/') && (NXT(1) == '>'))))
break;
if (SKIP_BLANKS == 0) {
xmlFatalErrMsg(ctxt, XML_ERR_SPACE_REQUIRED,
"attributes construct error\n");
}
SHRINK;
GROW;
}
/*
* SAX: Start of Element !
*/
if ((ctxt->sax != NULL) && (ctxt->sax->startElement != NULL) &&
(!ctxt->disableSAX)) {
if (nbatts > 0)
ctxt->sax->startElement(ctxt->userData, name, atts);
else
ctxt->sax->startElement(ctxt->userData, name, NULL);
}
if (atts != NULL) {
/* Free only the content strings */
for (i = 1;i < nbatts;i+=2)
if (atts[i] != NULL)
xmlFree((xmlChar *) atts[i]);
}
return(name);
}
/**
* xmlParseEndTag1:
* @ctxt: an XML parser context
* @line: line of the start tag
* @nsNr: number of namespaces on the start tag
*
* Parse an end tag. Always consumes '</'.
*
* [42] ETag ::= '</' Name S? '>'
*
* With namespace
*
* [NS 9] ETag ::= '</' QName S? '>'
*/
static void
xmlParseEndTag1(xmlParserCtxtPtr ctxt, int line) {
const xmlChar *name;
GROW;
if ((RAW != '<') || (NXT(1) != '/')) {
xmlFatalErrMsg(ctxt, XML_ERR_LTSLASH_REQUIRED,
"xmlParseEndTag: '</' not found\n");
return;
}
SKIP(2);
name = xmlParseNameAndCompare(ctxt,ctxt->name);
/*
* We should definitely be at the ending "S? '>'" part
*/
GROW;
SKIP_BLANKS;
if ((!IS_BYTE_CHAR(RAW)) || (RAW != '>')) {
xmlFatalErr(ctxt, XML_ERR_GT_REQUIRED, NULL);
} else
NEXT1;
/*
* [ WFC: Element Type Match ]
* The Name in an element's end-tag must match the element type in the
* start-tag.
*
*/
if (name != (xmlChar*)1) {
if (name == NULL) name = BAD_CAST "unparsable";
xmlFatalErrMsgStrIntStr(ctxt, XML_ERR_TAG_NAME_MISMATCH,
"Opening and ending tag mismatch: %s line %d and %s\n",
ctxt->name, line, name);
}
/*
* SAX: End of Tag
*/
if ((ctxt->sax != NULL) && (ctxt->sax->endElement != NULL) &&
(!ctxt->disableSAX))
ctxt->sax->endElement(ctxt->userData, ctxt->name);
namePop(ctxt);
spacePop(ctxt);
}
/**
* xmlParseEndTag:
* @ctxt: an XML parser context
*
* DEPRECATED: Internal function, don't use.
*
* parse an end of tag
*
* [42] ETag ::= '</' Name S? '>'
*
* With namespace
*
* [NS 9] ETag ::= '</' QName S? '>'
*/
void
xmlParseEndTag(xmlParserCtxtPtr ctxt) {
xmlParseEndTag1(ctxt, 0);
}
#endif /* LIBXML_SAX1_ENABLED */
/************************************************************************
* *
* SAX 2 specific operations *
* *
************************************************************************/
/**
* xmlParseQNameHashed:
* @ctxt: an XML parser context
* @prefix: pointer to store the prefix part
*
* parse an XML Namespace QName
*
* [6] QName ::= (Prefix ':')? LocalPart
* [7] Prefix ::= NCName
* [8] LocalPart ::= NCName
*
* Returns the Name parsed or NULL
*/
static xmlHashedString
xmlParseQNameHashed(xmlParserCtxtPtr ctxt, xmlHashedString *prefix) {
xmlHashedString l, p;
int start, isNCName = 0;
l.name = NULL;
p.name = NULL;
GROW;
start = CUR_PTR - BASE_PTR;
l = xmlParseNCName(ctxt);
if (l.name != NULL) {
isNCName = 1;
if (CUR == ':') {
NEXT;
p = l;
l = xmlParseNCName(ctxt);
}
}
if ((l.name == NULL) || (CUR == ':')) {
xmlChar *tmp;
l.name = NULL;
p.name = NULL;
if ((isNCName == 0) && (CUR != ':'))
return(l);
tmp = xmlParseNmtoken(ctxt);
if (tmp != NULL)
xmlFree(tmp);
l = xmlDictLookupHashed(ctxt->dict, BASE_PTR + start,
CUR_PTR - (BASE_PTR + start));
if (l.name == NULL) {
xmlErrMemory(ctxt);
return(l);
}
xmlNsErr(ctxt, XML_NS_ERR_QNAME,
"Failed to parse QName '%s'\n", l.name, NULL, NULL);
}
*prefix = p;
return(l);
}
/**
* xmlParseQName:
* @ctxt: an XML parser context
* @prefix: pointer to store the prefix part
*
* parse an XML Namespace QName
*
* [6] QName ::= (Prefix ':')? LocalPart
* [7] Prefix ::= NCName
* [8] LocalPart ::= NCName
*
* Returns the Name parsed or NULL
*/
static const xmlChar *
xmlParseQName(xmlParserCtxtPtr ctxt, const xmlChar **prefix) {
xmlHashedString n, p;
n = xmlParseQNameHashed(ctxt, &p);
if (n.name == NULL)
return(NULL);
*prefix = p.name;
return(n.name);
}
/**
* xmlParseQNameAndCompare:
* @ctxt: an XML parser context
* @name: the localname
* @prefix: the prefix, if any.
*
* parse an XML name and compares for match
* (specialized for endtag parsing)
*
* Returns NULL for an illegal name, (xmlChar*) 1 for success
* and the name for mismatch
*/
static const xmlChar *
xmlParseQNameAndCompare(xmlParserCtxtPtr ctxt, xmlChar const *name,
xmlChar const *prefix) {
const xmlChar *cmp;
const xmlChar *in;
const xmlChar *ret;
const xmlChar *prefix2;
if (prefix == NULL) return(xmlParseNameAndCompare(ctxt, name));
GROW;
in = ctxt->input->cur;
cmp = prefix;
while (*in != 0 && *in == *cmp) {
++in;
++cmp;
}
if ((*cmp == 0) && (*in == ':')) {
in++;
cmp = name;
while (*in != 0 && *in == *cmp) {
++in;
++cmp;
}
if (*cmp == 0 && (*in == '>' || IS_BLANK_CH (*in))) {
/* success */
ctxt->input->col += in - ctxt->input->cur;
ctxt->input->cur = in;
return((const xmlChar*) 1);
}
}
/*
* all strings coms from the dictionary, equality can be done directly
*/
ret = xmlParseQName (ctxt, &prefix2);
if (ret == NULL)
return(NULL);
if ((ret == name) && (prefix == prefix2))
return((const xmlChar*) 1);
return ret;
}
/**
* xmlParseAttribute2:
* @ctxt: an XML parser context
* @pref: the element prefix
* @elem: the element name
* @prefix: a xmlChar ** used to store the value of the attribute prefix
* @value: a xmlChar ** used to store the value of the attribute
* @len: an int * to save the length of the attribute
* @alloc: an int * to indicate if the attribute was allocated
*
* parse an attribute in the new SAX2 framework.
*
* Returns the attribute name, and the value in *value, .
*/
static xmlHashedString
xmlParseAttribute2(xmlParserCtxtPtr ctxt,
const xmlChar * pref, const xmlChar * elem,
xmlHashedString * hprefix, xmlChar ** value,
int *len, int *alloc)
{
xmlHashedString hname;
const xmlChar *prefix, *name;
xmlChar *val = NULL, *internal_val = NULL;
int normalize = 0;
int isNamespace;
*value = NULL;
GROW;
hname = xmlParseQNameHashed(ctxt, hprefix);
if (hname.name == NULL) {
xmlFatalErrMsg(ctxt, XML_ERR_NAME_REQUIRED,
"error parsing attribute name\n");
return(hname);
}
name = hname.name;
if (hprefix->name != NULL)
prefix = hprefix->name;
else
prefix = NULL;
/*
* get the type if needed
*/
if (ctxt->attsSpecial != NULL) {
int type;
type = (int) (ptrdiff_t) xmlHashQLookup2(ctxt->attsSpecial,
pref, elem,
prefix, name);
if (type != 0)
normalize = 1;
}
/*
* read the value
*/
SKIP_BLANKS;
if (RAW == '=') {
NEXT;
SKIP_BLANKS;
isNamespace = (((prefix == NULL) && (name == ctxt->str_xmlns)) ||
(prefix == ctxt->str_xmlns));
val = xmlParseAttValueInternal(ctxt, len, alloc, normalize,
isNamespace);
if (val == NULL)
goto error;
} else {
xmlFatalErrMsgStr(ctxt, XML_ERR_ATTRIBUTE_WITHOUT_VALUE,
"Specification mandates value for attribute %s\n",
name);
goto error;
}
if (prefix == ctxt->str_xml) {
/*
* Check that xml:lang conforms to the specification
* No more registered as an error, just generate a warning now
* since this was deprecated in XML second edition
*/
if ((ctxt->pedantic) && (xmlStrEqual(name, BAD_CAST "lang"))) {
internal_val = xmlStrndup(val, *len);
if (internal_val == NULL)
goto mem_error;
if (!xmlCheckLanguageID(internal_val)) {
xmlWarningMsg(ctxt, XML_WAR_LANG_VALUE,
"Malformed value for xml:lang : %s\n",
internal_val, NULL);
}
}
/*
* Check that xml:space conforms to the specification
*/
if (xmlStrEqual(name, BAD_CAST "space")) {
internal_val = xmlStrndup(val, *len);
if (internal_val == NULL)
goto mem_error;
if (xmlStrEqual(internal_val, BAD_CAST "default"))
*(ctxt->space) = 0;
else if (xmlStrEqual(internal_val, BAD_CAST "preserve"))
*(ctxt->space) = 1;
else {
xmlWarningMsg(ctxt, XML_WAR_SPACE_VALUE,
"Invalid value \"%s\" for xml:space : \"default\" or \"preserve\" expected\n",
internal_val, NULL);
}
}
if (internal_val) {
xmlFree(internal_val);
}
}
*value = val;
return (hname);
mem_error:
xmlErrMemory(ctxt);
error:
if ((val != NULL) && (*alloc != 0))
xmlFree(val);
return(hname);
}
/**
* xmlAttrHashInsert:
* @ctxt: parser context
* @size: size of the hash table
* @name: attribute name
* @uri: namespace uri
* @hashValue: combined hash value of name and uri
* @aindex: attribute index (this is a multiple of 5)
*
* Inserts a new attribute into the hash table.
*
* Returns INT_MAX if no existing attribute was found, the attribute
* index if an attribute was found, -1 if a memory allocation failed.
*/
static int
xmlAttrHashInsert(xmlParserCtxtPtr ctxt, unsigned size, const xmlChar *name,
const xmlChar *uri, unsigned hashValue, int aindex) {
xmlAttrHashBucket *table = ctxt->attrHash;
xmlAttrHashBucket *bucket;
unsigned hindex;
hindex = hashValue & (size - 1);
bucket = &table[hindex];
while (bucket->index >= 0) {
const xmlChar **atts = &ctxt->atts[bucket->index];
if (name == atts[0]) {
int nsIndex = (int) (ptrdiff_t) atts[2];
if ((nsIndex == NS_INDEX_EMPTY) ? (uri == NULL) :
(nsIndex == NS_INDEX_XML) ? (uri == ctxt->str_xml_ns) :
(uri == ctxt->nsTab[nsIndex * 2 + 1]))
return(bucket->index);
}
hindex++;
bucket++;
if (hindex >= size) {
hindex = 0;
bucket = table;
}
}
bucket->index = aindex;
return(INT_MAX);
}
/**
* xmlParseStartTag2:
* @ctxt: an XML parser context
*
* Parse a start tag. Always consumes '<'.
*
* This routine is called when running SAX2 parsing
*
* [40] STag ::= '<' Name (S Attribute)* S? '>'
*
* [ WFC: Unique Att Spec ]
* No attribute name may appear more than once in the same start-tag or
* empty-element tag.
*
* [44] EmptyElemTag ::= '<' Name (S Attribute)* S? '/>'
*
* [ WFC: Unique Att Spec ]
* No attribute name may appear more than once in the same start-tag or
* empty-element tag.
*
* With namespace:
*
* [NS 8] STag ::= '<' QName (S Attribute)* S? '>'
*
* [NS 10] EmptyElement ::= '<' QName (S Attribute)* S? '/>'
*
* Returns the element name parsed
*/
static const xmlChar *
xmlParseStartTag2(xmlParserCtxtPtr ctxt, const xmlChar **pref,
const xmlChar **URI, int *nbNsPtr) {
xmlHashedString hlocalname;
xmlHashedString hprefix;
xmlHashedString hattname;
xmlHashedString haprefix;
const xmlChar *localname;
const xmlChar *prefix;
const xmlChar *attname;
const xmlChar *aprefix;
const xmlChar *uri;
xmlChar *attvalue = NULL;
const xmlChar **atts = ctxt->atts;
unsigned attrHashSize = 0;
int maxatts = ctxt->maxatts;
int nratts, nbatts, nbdef;
int i, j, nbNs, nbTotalDef, attval, nsIndex, maxAtts;
int alloc = 0;
if (RAW != '<') return(NULL);
NEXT1;
nbatts = 0;
nratts = 0;
nbdef = 0;
nbNs = 0;
nbTotalDef = 0;
attval = 0;
if (xmlParserNsStartElement(ctxt->nsdb) < 0) {
xmlErrMemory(ctxt);
return(NULL);
}
hlocalname = xmlParseQNameHashed(ctxt, &hprefix);
if (hlocalname.name == NULL) {
xmlFatalErrMsg(ctxt, XML_ERR_NAME_REQUIRED,
"StartTag: invalid element name\n");
return(NULL);
}
localname = hlocalname.name;
prefix = hprefix.name;
/*
* Now parse the attributes, it ends up with the ending
*
* (S Attribute)* S?
*/
SKIP_BLANKS;
GROW;
/*
* The ctxt->atts array will be ultimately passed to the SAX callback
* containing five xmlChar pointers for each attribute:
*
* [0] attribute name
* [1] attribute prefix
* [2] namespace URI
* [3] attribute value
* [4] end of attribute value
*
* To save memory, we reuse this array temporarily and store integers
* in these pointer variables.
*
* [0] attribute name
* [1] attribute prefix
* [2] hash value of attribute prefix, and later namespace index
* [3] for non-allocated values: ptrdiff_t offset into input buffer
* [4] for non-allocated values: ptrdiff_t offset into input buffer
*
* The ctxt->attallocs array contains an additional unsigned int for
* each attribute, containing the hash value of the attribute name
* and the alloc flag in bit 31.
*/
while (((RAW != '>') &&
((RAW != '/') || (NXT(1) != '>')) &&
(IS_BYTE_CHAR(RAW))) && (PARSER_STOPPED(ctxt) == 0)) {
int len = -1;
hattname = xmlParseAttribute2(ctxt, prefix, localname,
&haprefix, &attvalue, &len,
&alloc);
if (hattname.name == NULL)
break;
if (attvalue == NULL)
goto next_attr;
attname = hattname.name;
aprefix = haprefix.name;
if (len < 0) len = xmlStrlen(attvalue);
if ((attname == ctxt->str_xmlns) && (aprefix == NULL)) {
xmlHashedString huri;
xmlURIPtr parsedUri;
huri = xmlDictLookupHashed(ctxt->dict, attvalue, len);
uri = huri.name;
if (uri == NULL) {
xmlErrMemory(ctxt);
goto next_attr;
}
if (*uri != 0) {
if (xmlParseURISafe((const char *) uri, &parsedUri) < 0) {
xmlErrMemory(ctxt);
goto next_attr;
}
if (parsedUri == NULL) {
xmlNsErr(ctxt, XML_WAR_NS_URI,
"xmlns: '%s' is not a valid URI\n",
uri, NULL, NULL);
} else {
if (parsedUri->scheme == NULL) {
xmlNsWarn(ctxt, XML_WAR_NS_URI_RELATIVE,
"xmlns: URI %s is not absolute\n",
uri, NULL, NULL);
}
xmlFreeURI(parsedUri);
}
if (uri == ctxt->str_xml_ns) {
if (attname != ctxt->str_xml) {
xmlNsErr(ctxt, XML_NS_ERR_XML_NAMESPACE,
"xml namespace URI cannot be the default namespace\n",
NULL, NULL, NULL);
}
goto next_attr;
}
if ((len == 29) &&
(xmlStrEqual(uri,
BAD_CAST "http://www.w3.org/2000/xmlns/"))) {
xmlNsErr(ctxt, XML_NS_ERR_XML_NAMESPACE,
"reuse of the xmlns namespace name is forbidden\n",
NULL, NULL, NULL);
goto next_attr;
}
}
if (xmlParserNsPush(ctxt, NULL, &huri, NULL, 0) > 0)
nbNs++;
} else if (aprefix == ctxt->str_xmlns) {
xmlHashedString huri;
xmlURIPtr parsedUri;
huri = xmlDictLookupHashed(ctxt->dict, attvalue, len);
uri = huri.name;
if (uri == NULL) {
xmlErrMemory(ctxt);
goto next_attr;
}
if (attname == ctxt->str_xml) {
if (uri != ctxt->str_xml_ns) {
xmlNsErr(ctxt, XML_NS_ERR_XML_NAMESPACE,
"xml namespace prefix mapped to wrong URI\n",
NULL, NULL, NULL);
}
/*
* Do not keep a namespace definition node
*/
goto next_attr;
}
if (uri == ctxt->str_xml_ns) {
if (attname != ctxt->str_xml) {
xmlNsErr(ctxt, XML_NS_ERR_XML_NAMESPACE,
"xml namespace URI mapped to wrong prefix\n",
NULL, NULL, NULL);
}
goto next_attr;
}
if (attname == ctxt->str_xmlns) {
xmlNsErr(ctxt, XML_NS_ERR_XML_NAMESPACE,
"redefinition of the xmlns prefix is forbidden\n",
NULL, NULL, NULL);
goto next_attr;
}
if ((len == 29) &&
(xmlStrEqual(uri,
BAD_CAST "http://www.w3.org/2000/xmlns/"))) {
xmlNsErr(ctxt, XML_NS_ERR_XML_NAMESPACE,
"reuse of the xmlns namespace name is forbidden\n",
NULL, NULL, NULL);
goto next_attr;
}
if ((uri == NULL) || (uri[0] == 0)) {
xmlNsErr(ctxt, XML_NS_ERR_XML_NAMESPACE,
"xmlns:%s: Empty XML namespace is not allowed\n",
attname, NULL, NULL);
goto next_attr;
} else {
if (xmlParseURISafe((const char *) uri, &parsedUri) < 0) {
xmlErrMemory(ctxt);
goto next_attr;
}
if (parsedUri == NULL) {
xmlNsErr(ctxt, XML_WAR_NS_URI,
"xmlns:%s: '%s' is not a valid URI\n",
attname, uri, NULL);
} else {
if ((ctxt->pedantic) && (parsedUri->scheme == NULL)) {
xmlNsWarn(ctxt, XML_WAR_NS_URI_RELATIVE,
"xmlns:%s: URI %s is not absolute\n",
attname, uri, NULL);
}
xmlFreeURI(parsedUri);
}
}
if (xmlParserNsPush(ctxt, &hattname, &huri, NULL, 0) > 0)
nbNs++;
} else {
/*
* Populate attributes array, see above for repurposing
* of xmlChar pointers.
*/
if ((atts == NULL) || (nbatts + 5 > maxatts)) {
if (xmlCtxtGrowAttrs(ctxt, nbatts + 5) < 0) {
goto next_attr;
}
maxatts = ctxt->maxatts;
atts = ctxt->atts;
}
ctxt->attallocs[nratts++] = (hattname.hashValue & 0x7FFFFFFF) |
((unsigned) alloc << 31);
atts[nbatts++] = attname;
atts[nbatts++] = aprefix;
atts[nbatts++] = (const xmlChar *) (size_t) haprefix.hashValue;
if (alloc) {
atts[nbatts++] = attvalue;
attvalue += len;
atts[nbatts++] = attvalue;
} else {
/*
* attvalue points into the input buffer which can be
* reallocated. Store differences to input->base instead.
* The pointers will be reconstructed later.
*/
atts[nbatts++] = (void *) (attvalue - BASE_PTR);
attvalue += len;
atts[nbatts++] = (void *) (attvalue - BASE_PTR);
}
/*
* tag if some deallocation is needed
*/
if (alloc != 0) attval = 1;
attvalue = NULL; /* moved into atts */
}
next_attr:
if ((attvalue != NULL) && (alloc != 0)) {
xmlFree(attvalue);
attvalue = NULL;
}
GROW
if ((RAW == '>') || (((RAW == '/') && (NXT(1) == '>'))))
break;
if (SKIP_BLANKS == 0) {
xmlFatalErrMsg(ctxt, XML_ERR_SPACE_REQUIRED,
"attributes construct error\n");
break;
}
GROW;
}
/*
* Namespaces from default attributes
*/
if (ctxt->attsDefault != NULL) {
xmlDefAttrsPtr defaults;
defaults = xmlHashLookup2(ctxt->attsDefault, localname, prefix);
if (defaults != NULL) {
for (i = 0; i < defaults->nbAttrs; i++) {
xmlDefAttr *attr = &defaults->attrs[i];
attname = attr->name.name;
aprefix = attr->prefix.name;
if ((attname == ctxt->str_xmlns) && (aprefix == NULL)) {
xmlParserEntityCheck(ctxt, attr->expandedSize);
if (xmlParserNsPush(ctxt, NULL, &attr->value, NULL, 1) > 0)
nbNs++;
} else if (aprefix == ctxt->str_xmlns) {
xmlParserEntityCheck(ctxt, attr->expandedSize);
if (xmlParserNsPush(ctxt, &attr->name, &attr->value,
NULL, 1) > 0)
nbNs++;
} else {
nbTotalDef += 1;
}
}
}
}
/*
* Resolve attribute namespaces
*/
for (i = 0; i < nbatts; i += 5) {
attname = atts[i];
aprefix = atts[i+1];
/*
* The default namespace does not apply to attribute names.
*/
if (aprefix == NULL) {
nsIndex = NS_INDEX_EMPTY;
} else if (aprefix == ctxt->str_xml) {
nsIndex = NS_INDEX_XML;
} else {
haprefix.name = aprefix;
haprefix.hashValue = (size_t) atts[i+2];
nsIndex = xmlParserNsLookup(ctxt, &haprefix, NULL);
if ((nsIndex == INT_MAX) || (nsIndex < ctxt->nsdb->minNsIndex)) {
xmlNsErr(ctxt, XML_NS_ERR_UNDEFINED_NAMESPACE,
"Namespace prefix %s for %s on %s is not defined\n",
aprefix, attname, localname);
nsIndex = NS_INDEX_EMPTY;
}
}
atts[i+2] = (const xmlChar *) (ptrdiff_t) nsIndex;
}
/*
* Maximum number of attributes including default attributes.
*/
maxAtts = nratts + nbTotalDef;
/*
* Verify that attribute names are unique.
*/
if (maxAtts > 1) {
attrHashSize = 4;
while (attrHashSize / 2 < (unsigned) maxAtts)
attrHashSize *= 2;
if (attrHashSize > ctxt->attrHashMax) {
xmlAttrHashBucket *tmp;
tmp = xmlRealloc(ctxt->attrHash, attrHashSize * sizeof(tmp[0]));
if (tmp == NULL) {
xmlErrMemory(ctxt);
goto done;
}
ctxt->attrHash = tmp;
ctxt->attrHashMax = attrHashSize;
}
memset(ctxt->attrHash, -1, attrHashSize * sizeof(ctxt->attrHash[0]));
for (i = 0, j = 0; j < nratts; i += 5, j++) {
const xmlChar *nsuri;
unsigned hashValue, nameHashValue, uriHashValue;
int res;
attname = atts[i];
aprefix = atts[i+1];
nsIndex = (ptrdiff_t) atts[i+2];
/* Hash values always have bit 31 set, see dict.c */
nameHashValue = ctxt->attallocs[j] | 0x80000000;
if (nsIndex == NS_INDEX_EMPTY) {
/*
* Prefix with empty namespace means an undeclared
* prefix which was already reported above.
*/
if (aprefix != NULL)
continue;
nsuri = NULL;
uriHashValue = URI_HASH_EMPTY;
} else if (nsIndex == NS_INDEX_XML) {
nsuri = ctxt->str_xml_ns;
uriHashValue = URI_HASH_XML;
} else {
nsuri = ctxt->nsTab[nsIndex * 2 + 1];
uriHashValue = ctxt->nsdb->extra[nsIndex].uriHashValue;
}
hashValue = xmlDictCombineHash(nameHashValue, uriHashValue);
res = xmlAttrHashInsert(ctxt, attrHashSize, attname, nsuri,
hashValue, i);
if (res < 0)
continue;
/*
* [ WFC: Unique Att Spec ]
* No attribute name may appear more than once in the same
* start-tag or empty-element tag.
* As extended by the Namespace in XML REC.
*/
if (res < INT_MAX) {
if (aprefix == atts[res+1]) {
xmlErrAttributeDup(ctxt, aprefix, attname);
} else {
xmlNsErr(ctxt, XML_NS_ERR_ATTRIBUTE_REDEFINED,
"Namespaced Attribute %s in '%s' redefined\n",
attname, nsuri, NULL);
}
}
}
}
/*
* Default attributes
*/
if (ctxt->attsDefault != NULL) {
xmlDefAttrsPtr defaults;
defaults = xmlHashLookup2(ctxt->attsDefault, localname, prefix);
if (defaults != NULL) {
for (i = 0; i < defaults->nbAttrs; i++) {
xmlDefAttr *attr = &defaults->attrs[i];
const xmlChar *nsuri;
unsigned hashValue, uriHashValue;
int res;
attname = attr->name.name;
aprefix = attr->prefix.name;
if ((attname == ctxt->str_xmlns) && (aprefix == NULL))
continue;
if (aprefix == ctxt->str_xmlns)
continue;
if (aprefix == NULL) {
nsIndex = NS_INDEX_EMPTY;
nsuri = NULL;
uriHashValue = URI_HASH_EMPTY;
} if (aprefix == ctxt->str_xml) {
nsIndex = NS_INDEX_XML;
nsuri = ctxt->str_xml_ns;
uriHashValue = URI_HASH_XML;
} else if (aprefix != NULL) {
nsIndex = xmlParserNsLookup(ctxt, &attr->prefix, NULL);
if ((nsIndex == INT_MAX) ||
(nsIndex < ctxt->nsdb->minNsIndex)) {
xmlNsErr(ctxt, XML_NS_ERR_UNDEFINED_NAMESPACE,
"Namespace prefix %s for %s on %s is not "
"defined\n",
aprefix, attname, localname);
nsIndex = NS_INDEX_EMPTY;
nsuri = NULL;
uriHashValue = URI_HASH_EMPTY;
} else {
nsuri = ctxt->nsTab[nsIndex * 2 + 1];
uriHashValue = ctxt->nsdb->extra[nsIndex].uriHashValue;
}
}
/*
* Check whether the attribute exists
*/
if (maxAtts > 1) {
hashValue = xmlDictCombineHash(attr->name.hashValue,
uriHashValue);
res = xmlAttrHashInsert(ctxt, attrHashSize, attname, nsuri,
hashValue, nbatts);
if (res < 0)
continue;
if (res < INT_MAX) {
if (aprefix == atts[res+1])
continue;
xmlNsErr(ctxt, XML_NS_ERR_ATTRIBUTE_REDEFINED,
"Namespaced Attribute %s in '%s' redefined\n",
attname, nsuri, NULL);
}
}
xmlParserEntityCheck(ctxt, attr->expandedSize);
if ((atts == NULL) || (nbatts + 5 > maxatts)) {
if (xmlCtxtGrowAttrs(ctxt, nbatts + 5) < 0) {
localname = NULL;
goto done;
}
maxatts = ctxt->maxatts;
atts = ctxt->atts;
}
atts[nbatts++] = attname;
atts[nbatts++] = aprefix;
atts[nbatts++] = (const xmlChar *) (ptrdiff_t) nsIndex;
atts[nbatts++] = attr->value.name;
atts[nbatts++] = attr->valueEnd;
if ((ctxt->standalone == 1) && (attr->external != 0)) {
xmlValidityError(ctxt, XML_DTD_STANDALONE_DEFAULTED,
"standalone: attribute %s on %s defaulted "
"from external subset\n",
attname, localname);
}
nbdef++;
}
}
}
/*
* Reconstruct attribute pointers
*/
for (i = 0, j = 0; i < nbatts; i += 5, j++) {
/* namespace URI */
nsIndex = (ptrdiff_t) atts[i+2];
if (nsIndex == INT_MAX)
atts[i+2] = NULL;
else if (nsIndex == INT_MAX - 1)
atts[i+2] = ctxt->str_xml_ns;
else
atts[i+2] = ctxt->nsTab[nsIndex * 2 + 1];
if ((j < nratts) && (ctxt->attallocs[j] & 0x80000000) == 0) {
atts[i+3] = BASE_PTR + (ptrdiff_t) atts[i+3]; /* value */
atts[i+4] = BASE_PTR + (ptrdiff_t) atts[i+4]; /* valuend */
}
}
uri = xmlParserNsLookupUri(ctxt, &hprefix);
if ((prefix != NULL) && (uri == NULL)) {
xmlNsErr(ctxt, XML_NS_ERR_UNDEFINED_NAMESPACE,
"Namespace prefix %s on %s is not defined\n",
prefix, localname, NULL);
}
*pref = prefix;
*URI = uri;
/*
* SAX callback
*/
if ((ctxt->sax != NULL) && (ctxt->sax->startElementNs != NULL) &&
(!ctxt->disableSAX)) {
if (nbNs > 0)
ctxt->sax->startElementNs(ctxt->userData, localname, prefix, uri,
nbNs, ctxt->nsTab + 2 * (ctxt->nsNr - nbNs),
nbatts / 5, nbdef, atts);
else
ctxt->sax->startElementNs(ctxt->userData, localname, prefix, uri,
0, NULL, nbatts / 5, nbdef, atts);
}
done:
/*
* Free allocated attribute values
*/
if (attval != 0) {
for (i = 0, j = 0; j < nratts; i += 5, j++)
if (ctxt->attallocs[j] & 0x80000000)
xmlFree((xmlChar *) atts[i+3]);
}
*nbNsPtr = nbNs;
return(localname);
}
/**
* xmlParseEndTag2:
* @ctxt: an XML parser context
* @line: line of the start tag
* @nsNr: number of namespaces on the start tag
*
* Parse an end tag. Always consumes '</'.
*
* [42] ETag ::= '</' Name S? '>'
*
* With namespace
*
* [NS 9] ETag ::= '</' QName S? '>'
*/
static void
xmlParseEndTag2(xmlParserCtxtPtr ctxt, const xmlStartTag *tag) {
const xmlChar *name;
GROW;
if ((RAW != '<') || (NXT(1) != '/')) {
xmlFatalErr(ctxt, XML_ERR_LTSLASH_REQUIRED, NULL);
return;
}
SKIP(2);
if (tag->prefix == NULL)
name = xmlParseNameAndCompare(ctxt, ctxt->name);
else
name = xmlParseQNameAndCompare(ctxt, ctxt->name, tag->prefix);
/*
* We should definitely be at the ending "S? '>'" part
*/
GROW;
SKIP_BLANKS;
if ((!IS_BYTE_CHAR(RAW)) || (RAW != '>')) {
xmlFatalErr(ctxt, XML_ERR_GT_REQUIRED, NULL);
} else
NEXT1;
/*
* [ WFC: Element Type Match ]
* The Name in an element's end-tag must match the element type in the
* start-tag.
*
*/
if (name != (xmlChar*)1) {
if (name == NULL) name = BAD_CAST "unparsable";
xmlFatalErrMsgStrIntStr(ctxt, XML_ERR_TAG_NAME_MISMATCH,
"Opening and ending tag mismatch: %s line %d and %s\n",
ctxt->name, tag->line, name);
}
/*
* SAX: End of Tag
*/
if ((ctxt->sax != NULL) && (ctxt->sax->endElementNs != NULL) &&
(!ctxt->disableSAX))
ctxt->sax->endElementNs(ctxt->userData, ctxt->name, tag->prefix,
tag->URI);
spacePop(ctxt);
if (tag->nsNr != 0)
xmlParserNsPop(ctxt, tag->nsNr);
}
/**
* xmlParseCDSect:
* @ctxt: an XML parser context
*
* DEPRECATED: Internal function, don't use.
*
* Parse escaped pure raw content. Always consumes '<!['.
*
* [18] CDSect ::= CDStart CData CDEnd
*
* [19] CDStart ::= '<![CDATA['
*
* [20] Data ::= (Char* - (Char* ']]>' Char*))
*
* [21] CDEnd ::= ']]>'
*/
void
xmlParseCDSect(xmlParserCtxtPtr ctxt) {
xmlChar *buf = NULL;
int len = 0;
int size = XML_PARSER_BUFFER_SIZE;
int r, rl;
int s, sl;
int cur, l;
int maxLength = (ctxt->options & XML_PARSE_HUGE) ?
XML_MAX_HUGE_LENGTH :
XML_MAX_TEXT_LENGTH;
if ((CUR != '<') || (NXT(1) != '!') || (NXT(2) != '['))
return;
SKIP(3);
if (!CMP6(CUR_PTR, 'C', 'D', 'A', 'T', 'A', '['))
return;
SKIP(6);
r = CUR_CHAR(rl);
if (!IS_CHAR(r)) {
xmlFatalErr(ctxt, XML_ERR_CDATA_NOT_FINISHED, NULL);
goto out;
}
NEXTL(rl);
s = CUR_CHAR(sl);
if (!IS_CHAR(s)) {
xmlFatalErr(ctxt, XML_ERR_CDATA_NOT_FINISHED, NULL);
goto out;
}
NEXTL(sl);
cur = CUR_CHAR(l);
buf = (xmlChar *) xmlMallocAtomic(size);
if (buf == NULL) {
xmlErrMemory(ctxt);
goto out;
}
while (IS_CHAR(cur) &&
((r != ']') || (s != ']') || (cur != '>'))) {
if (len + 5 >= size) {
xmlChar *tmp;
tmp = (xmlChar *) xmlRealloc(buf, size * 2);
if (tmp == NULL) {
xmlErrMemory(ctxt);
goto out;
}
buf = tmp;
size *= 2;
}
COPY_BUF(buf, len, r);
if (len > maxLength) {
xmlFatalErrMsg(ctxt, XML_ERR_CDATA_NOT_FINISHED,
"CData section too big found\n");
goto out;
}
r = s;
rl = sl;
s = cur;
sl = l;
NEXTL(l);
cur = CUR_CHAR(l);
}
buf[len] = 0;
if (cur != '>') {
xmlFatalErrMsgStr(ctxt, XML_ERR_CDATA_NOT_FINISHED,
"CData section not finished\n%.50s\n", buf);
goto out;
}
NEXTL(l);
/*
* OK the buffer is to be consumed as cdata.
*/
if ((ctxt->sax != NULL) && (!ctxt->disableSAX)) {
if (ctxt->sax->cdataBlock != NULL)
ctxt->sax->cdataBlock(ctxt->userData, buf, len);
else if (ctxt->sax->characters != NULL)
ctxt->sax->characters(ctxt->userData, buf, len);
}
out:
xmlFree(buf);
}
/**
* xmlParseContentInternal:
* @ctxt: an XML parser context
*
* Parse a content sequence. Stops at EOF or '</'. Leaves checking of
* unexpected EOF to the caller.
*/
static void
xmlParseContentInternal(xmlParserCtxtPtr ctxt) {
int oldNameNr = ctxt->nameNr;
int oldSpaceNr = ctxt->spaceNr;
int oldNodeNr = ctxt->nodeNr;
GROW;
while ((ctxt->input->cur < ctxt->input->end) &&
(PARSER_STOPPED(ctxt) == 0)) {
const xmlChar *cur = ctxt->input->cur;
/*
* First case : a Processing Instruction.
*/
if ((*cur == '<') && (cur[1] == '?')) {
xmlParsePI(ctxt);
}
/*
* Second case : a CDSection
*/
/* 2.6.0 test was *cur not RAW */
else if (CMP9(CUR_PTR, '<', '!', '[', 'C', 'D', 'A', 'T', 'A', '[')) {
xmlParseCDSect(ctxt);
}
/*
* Third case : a comment
*/
else if ((*cur == '<') && (NXT(1) == '!') &&
(NXT(2) == '-') && (NXT(3) == '-')) {
xmlParseComment(ctxt);
}
/*
* Fourth case : a sub-element.
*/
else if (*cur == '<') {
if (NXT(1) == '/') {
if (ctxt->nameNr <= oldNameNr)
break;
xmlParseElementEnd(ctxt);
} else {
xmlParseElementStart(ctxt);
}
}
/*
* Fifth case : a reference. If if has not been resolved,
* parsing returns it's Name, create the node
*/
else if (*cur == '&') {
xmlParseReference(ctxt);
}
/*
* Last case, text. Note that References are handled directly.
*/
else {
xmlParseCharDataInternal(ctxt, 0);
}
SHRINK;
GROW;
}
if ((ctxt->nameNr > oldNameNr) &&
(ctxt->input->cur >= ctxt->input->end) &&
(ctxt->wellFormed)) {
const xmlChar *name = ctxt->nameTab[ctxt->nameNr - 1];
int line = ctxt->pushTab[ctxt->nameNr - 1].line;
xmlFatalErrMsgStrIntStr(ctxt, XML_ERR_TAG_NOT_FINISHED,
"Premature end of data in tag %s line %d\n",
name, line, NULL);
}
/*
* Clean up in error case
*/
while (ctxt->nodeNr > oldNodeNr)
nodePop(ctxt);
while (ctxt->nameNr > oldNameNr) {
xmlStartTag *tag = &ctxt->pushTab[ctxt->nameNr - 1];
if (tag->nsNr != 0)
xmlParserNsPop(ctxt, tag->nsNr);
namePop(ctxt);
}
while (ctxt->spaceNr > oldSpaceNr)
spacePop(ctxt);
}
/**
* xmlParseContent:
* @ctxt: an XML parser context
*
* Parse XML element content. This is useful if you're only interested
* in custom SAX callbacks. If you want a node list, use
* xmlParseInNodeContext.
*/
void
xmlParseContent(xmlParserCtxtPtr ctxt) {
if ((ctxt == NULL) || (ctxt->input == NULL))
return;
xmlCtxtInitializeLate(ctxt);
xmlParseContentInternal(ctxt);
if (ctxt->input->cur < ctxt->input->end)
xmlFatalErr(ctxt, XML_ERR_NOT_WELL_BALANCED, NULL);
}
/**
* xmlParseElement:
* @ctxt: an XML parser context
*
* DEPRECATED: Internal function, don't use.
*
* parse an XML element
*
* [39] element ::= EmptyElemTag | STag content ETag
*
* [ WFC: Element Type Match ]
* The Name in an element's end-tag must match the element type in the
* start-tag.
*
*/
void
xmlParseElement(xmlParserCtxtPtr ctxt) {
if (xmlParseElementStart(ctxt) != 0)
return;
xmlParseContentInternal(ctxt);
if (ctxt->input->cur >= ctxt->input->end) {
if (ctxt->wellFormed) {
const xmlChar *name = ctxt->nameTab[ctxt->nameNr - 1];
int line = ctxt->pushTab[ctxt->nameNr - 1].line;
xmlFatalErrMsgStrIntStr(ctxt, XML_ERR_TAG_NOT_FINISHED,
"Premature end of data in tag %s line %d\n",
name, line, NULL);
}
return;
}
xmlParseElementEnd(ctxt);
}
/**
* xmlParseElementStart:
* @ctxt: an XML parser context
*
* Parse the start of an XML element. Returns -1 in case of error, 0 if an
* opening tag was parsed, 1 if an empty element was parsed.
*
* Always consumes '<'.
*/
static int
xmlParseElementStart(xmlParserCtxtPtr ctxt) {
int maxDepth = (ctxt->options & XML_PARSE_HUGE) ? 2048 : 256;
const xmlChar *name;
const xmlChar *prefix = NULL;
const xmlChar *URI = NULL;
xmlParserNodeInfo node_info;
int line;
xmlNodePtr cur;
int nbNs = 0;
if (ctxt->nameNr > maxDepth) {
xmlFatalErrMsgInt(ctxt, XML_ERR_RESOURCE_LIMIT,
"Excessive depth in document: %d use XML_PARSE_HUGE option\n",
ctxt->nameNr);
xmlHaltParser(ctxt);
return(-1);
}
/* Capture start position */
if (ctxt->record_info) {
node_info.begin_pos = ctxt->input->consumed +
(CUR_PTR - ctxt->input->base);
node_info.begin_line = ctxt->input->line;
}
if (ctxt->spaceNr == 0)
spacePush(ctxt, -1);
else if (*ctxt->space == -2)
spacePush(ctxt, -1);
else
spacePush(ctxt, *ctxt->space);
line = ctxt->input->line;
#ifdef LIBXML_SAX1_ENABLED
if (ctxt->sax2)
#endif /* LIBXML_SAX1_ENABLED */
name = xmlParseStartTag2(ctxt, &prefix, &URI, &nbNs);
#ifdef LIBXML_SAX1_ENABLED
else
name = xmlParseStartTag(ctxt);
#endif /* LIBXML_SAX1_ENABLED */
if (name == NULL) {
spacePop(ctxt);
return(-1);
}
nameNsPush(ctxt, name, prefix, URI, line, nbNs);
cur = ctxt->node;
#ifdef LIBXML_VALID_ENABLED
/*
* [ VC: Root Element Type ]
* The Name in the document type declaration must match the element
* type of the root element.
*/
if (ctxt->validate && ctxt->wellFormed && ctxt->myDoc &&
ctxt->node && (ctxt->node == ctxt->myDoc->children))
ctxt->valid &= xmlValidateRoot(&ctxt->vctxt, ctxt->myDoc);
#endif /* LIBXML_VALID_ENABLED */
/*
* Check for an Empty Element.
*/
if ((RAW == '/') && (NXT(1) == '>')) {
SKIP(2);
if (ctxt->sax2) {
if ((ctxt->sax != NULL) && (ctxt->sax->endElementNs != NULL) &&
(!ctxt->disableSAX))
ctxt->sax->endElementNs(ctxt->userData, name, prefix, URI);
#ifdef LIBXML_SAX1_ENABLED
} else {
if ((ctxt->sax != NULL) && (ctxt->sax->endElement != NULL) &&
(!ctxt->disableSAX))
ctxt->sax->endElement(ctxt->userData, name);
#endif /* LIBXML_SAX1_ENABLED */
}
namePop(ctxt);
spacePop(ctxt);
if (nbNs > 0)
xmlParserNsPop(ctxt, nbNs);
if (cur != NULL && ctxt->record_info) {
node_info.node = cur;
node_info.end_pos = ctxt->input->consumed +
(CUR_PTR - ctxt->input->base);
node_info.end_line = ctxt->input->line;
xmlParserAddNodeInfo(ctxt, &node_info);
}
return(1);
}
if (RAW == '>') {
NEXT1;
if (cur != NULL && ctxt->record_info) {
node_info.node = cur;
node_info.end_pos = 0;
node_info.end_line = 0;
xmlParserAddNodeInfo(ctxt, &node_info);
}
} else {
xmlFatalErrMsgStrIntStr(ctxt, XML_ERR_GT_REQUIRED,
"Couldn't find end of Start Tag %s line %d\n",
name, line, NULL);
/*
* end of parsing of this node.
*/
nodePop(ctxt);
namePop(ctxt);
spacePop(ctxt);
if (nbNs > 0)
xmlParserNsPop(ctxt, nbNs);
return(-1);
}
return(0);
}
/**
* xmlParseElementEnd:
* @ctxt: an XML parser context
*
* Parse the end of an XML element. Always consumes '</'.
*/
static void
xmlParseElementEnd(xmlParserCtxtPtr ctxt) {
xmlNodePtr cur = ctxt->node;
if (ctxt->nameNr <= 0) {
if ((RAW == '<') && (NXT(1) == '/'))
SKIP(2);
return;
}
/*
* parse the end of tag: '</' should be here.
*/
if (ctxt->sax2) {
xmlParseEndTag2(ctxt, &ctxt->pushTab[ctxt->nameNr - 1]);
namePop(ctxt);
}
#ifdef LIBXML_SAX1_ENABLED
else
xmlParseEndTag1(ctxt, 0);
#endif /* LIBXML_SAX1_ENABLED */
/*
* Capture end position
*/
if (cur != NULL && ctxt->record_info) {
xmlParserNodeInfoPtr node_info;
node_info = (xmlParserNodeInfoPtr) xmlParserFindNodeInfo(ctxt, cur);
if (node_info != NULL) {
node_info->end_pos = ctxt->input->consumed +
(CUR_PTR - ctxt->input->base);
node_info->end_line = ctxt->input->line;
}
}
}
/**
* xmlParseVersionNum:
* @ctxt: an XML parser context
*
* DEPRECATED: Internal function, don't use.
*
* parse the XML version value.
*
* [26] VersionNum ::= '1.' [0-9]+
*
* In practice allow [0-9].[0-9]+ at that level
*
* Returns the string giving the XML version number, or NULL
*/
xmlChar *
xmlParseVersionNum(xmlParserCtxtPtr ctxt) {
xmlChar *buf = NULL;
int len = 0;
int size = 10;
xmlChar cur;
buf = (xmlChar *) xmlMallocAtomic(size);
if (buf == NULL) {
xmlErrMemory(ctxt);
return(NULL);
}
cur = CUR;
if (!((cur >= '0') && (cur <= '9'))) {
xmlFree(buf);
return(NULL);
}
buf[len++] = cur;
NEXT;
cur=CUR;
if (cur != '.') {
xmlFree(buf);
return(NULL);
}
buf[len++] = cur;
NEXT;
cur=CUR;
while ((cur >= '0') && (cur <= '9')) {
if (len + 1 >= size) {
xmlChar *tmp;
size *= 2;
tmp = (xmlChar *) xmlRealloc(buf, size);
if (tmp == NULL) {
xmlFree(buf);
xmlErrMemory(ctxt);
return(NULL);
}
buf = tmp;
}
buf[len++] = cur;
NEXT;
cur=CUR;
}
buf[len] = 0;
return(buf);
}
/**
* xmlParseVersionInfo:
* @ctxt: an XML parser context
*
* DEPRECATED: Internal function, don't use.
*
* parse the XML version.
*
* [24] VersionInfo ::= S 'version' Eq (' VersionNum ' | " VersionNum ")
*
* [25] Eq ::= S? '=' S?
*
* Returns the version string, e.g. "1.0"
*/
xmlChar *
xmlParseVersionInfo(xmlParserCtxtPtr ctxt) {
xmlChar *version = NULL;
if (CMP7(CUR_PTR, 'v', 'e', 'r', 's', 'i', 'o', 'n')) {
SKIP(7);
SKIP_BLANKS;
if (RAW != '=') {
xmlFatalErr(ctxt, XML_ERR_EQUAL_REQUIRED, NULL);
return(NULL);
}
NEXT;
SKIP_BLANKS;
if (RAW == '"') {
NEXT;
version = xmlParseVersionNum(ctxt);
if (RAW != '"') {
xmlFatalErr(ctxt, XML_ERR_STRING_NOT_CLOSED, NULL);
} else
NEXT;
} else if (RAW == '\''){
NEXT;
version = xmlParseVersionNum(ctxt);
if (RAW != '\'') {
xmlFatalErr(ctxt, XML_ERR_STRING_NOT_CLOSED, NULL);
} else
NEXT;
} else {
xmlFatalErr(ctxt, XML_ERR_STRING_NOT_STARTED, NULL);
}
}
return(version);
}
/**
* xmlParseEncName:
* @ctxt: an XML parser context
*
* DEPRECATED: Internal function, don't use.
*
* parse the XML encoding name
*
* [81] EncName ::= [A-Za-z] ([A-Za-z0-9._] | '-')*
*
* Returns the encoding name value or NULL
*/
xmlChar *
xmlParseEncName(xmlParserCtxtPtr ctxt) {
xmlChar *buf = NULL;
int len = 0;
int size = 10;
int maxLength = (ctxt->options & XML_PARSE_HUGE) ?
XML_MAX_TEXT_LENGTH :
XML_MAX_NAME_LENGTH;
xmlChar cur;
cur = CUR;
if (((cur >= 'a') && (cur <= 'z')) ||
((cur >= 'A') && (cur <= 'Z'))) {
buf = (xmlChar *) xmlMallocAtomic(size);
if (buf == NULL) {
xmlErrMemory(ctxt);
return(NULL);
}
buf[len++] = cur;
NEXT;
cur = CUR;
while (((cur >= 'a') && (cur <= 'z')) ||
((cur >= 'A') && (cur <= 'Z')) ||
((cur >= '0') && (cur <= '9')) ||
(cur == '.') || (cur == '_') ||
(cur == '-')) {
if (len + 1 >= size) {
xmlChar *tmp;
size *= 2;
tmp = (xmlChar *) xmlRealloc(buf, size);
if (tmp == NULL) {
xmlErrMemory(ctxt);
xmlFree(buf);
return(NULL);
}
buf = tmp;
}
buf[len++] = cur;
if (len > maxLength) {
xmlFatalErr(ctxt, XML_ERR_NAME_TOO_LONG, "EncName");
xmlFree(buf);
return(NULL);
}
NEXT;
cur = CUR;
}
buf[len] = 0;
} else {
xmlFatalErr(ctxt, XML_ERR_ENCODING_NAME, NULL);
}
return(buf);
}
/**
* xmlParseEncodingDecl:
* @ctxt: an XML parser context
*
* DEPRECATED: Internal function, don't use.
*
* parse the XML encoding declaration
*
* [80] EncodingDecl ::= S 'encoding' Eq ('"' EncName '"' | "'" EncName "'")
*
* this setups the conversion filters.
*
* Returns the encoding value or NULL
*/
const xmlChar *
xmlParseEncodingDecl(xmlParserCtxtPtr ctxt) {
xmlChar *encoding = NULL;
SKIP_BLANKS;
if (CMP8(CUR_PTR, 'e', 'n', 'c', 'o', 'd', 'i', 'n', 'g') == 0)
return(NULL);
SKIP(8);
SKIP_BLANKS;
if (RAW != '=') {
xmlFatalErr(ctxt, XML_ERR_EQUAL_REQUIRED, NULL);
return(NULL);
}
NEXT;
SKIP_BLANKS;
if (RAW == '"') {
NEXT;
encoding = xmlParseEncName(ctxt);
if (RAW != '"') {
xmlFatalErr(ctxt, XML_ERR_STRING_NOT_CLOSED, NULL);
xmlFree((xmlChar *) encoding);
return(NULL);
} else
NEXT;
} else if (RAW == '\''){
NEXT;
encoding = xmlParseEncName(ctxt);
if (RAW != '\'') {
xmlFatalErr(ctxt, XML_ERR_STRING_NOT_CLOSED, NULL);
xmlFree((xmlChar *) encoding);
return(NULL);
} else
NEXT;
} else {
xmlFatalErr(ctxt, XML_ERR_STRING_NOT_STARTED, NULL);
}
if (encoding == NULL)
return(NULL);
xmlSetDeclaredEncoding(ctxt, encoding);
return(ctxt->encoding);
}
/**
* xmlParseSDDecl:
* @ctxt: an XML parser context
*
* DEPRECATED: Internal function, don't use.
*
* parse the XML standalone declaration
*
* [32] SDDecl ::= S 'standalone' Eq
* (("'" ('yes' | 'no') "'") | ('"' ('yes' | 'no')'"'))
*
* [ VC: Standalone Document Declaration ]
* TODO The standalone document declaration must have the value "no"
* if any external markup declarations contain declarations of:
* - attributes with default values, if elements to which these
* attributes apply appear in the document without specifications
* of values for these attributes, or
* - entities (other than amp, lt, gt, apos, quot), if references
* to those entities appear in the document, or
* - attributes with values subject to normalization, where the
* attribute appears in the document with a value which will change
* as a result of normalization, or
* - element types with element content, if white space occurs directly
* within any instance of those types.
*
* Returns:
* 1 if standalone="yes"
* 0 if standalone="no"
* -2 if standalone attribute is missing or invalid
* (A standalone value of -2 means that the XML declaration was found,
* but no value was specified for the standalone attribute).
*/
int
xmlParseSDDecl(xmlParserCtxtPtr ctxt) {
int standalone = -2;
SKIP_BLANKS;
if (CMP10(CUR_PTR, 's', 't', 'a', 'n', 'd', 'a', 'l', 'o', 'n', 'e')) {
SKIP(10);
SKIP_BLANKS;
if (RAW != '=') {
xmlFatalErr(ctxt, XML_ERR_EQUAL_REQUIRED, NULL);
return(standalone);
}
NEXT;
SKIP_BLANKS;
if (RAW == '\''){
NEXT;
if ((RAW == 'n') && (NXT(1) == 'o')) {
standalone = 0;
SKIP(2);
} else if ((RAW == 'y') && (NXT(1) == 'e') &&
(NXT(2) == 's')) {
standalone = 1;
SKIP(3);
} else {
xmlFatalErr(ctxt, XML_ERR_STANDALONE_VALUE, NULL);
}
if (RAW != '\'') {
xmlFatalErr(ctxt, XML_ERR_STRING_NOT_CLOSED, NULL);
} else
NEXT;
} else if (RAW == '"'){
NEXT;
if ((RAW == 'n') && (NXT(1) == 'o')) {
standalone = 0;
SKIP(2);
} else if ((RAW == 'y') && (NXT(1) == 'e') &&
(NXT(2) == 's')) {
standalone = 1;
SKIP(3);
} else {
xmlFatalErr(ctxt, XML_ERR_STANDALONE_VALUE, NULL);
}
if (RAW != '"') {
xmlFatalErr(ctxt, XML_ERR_STRING_NOT_CLOSED, NULL);
} else
NEXT;
} else {
xmlFatalErr(ctxt, XML_ERR_STRING_NOT_STARTED, NULL);
}
}
return(standalone);
}
/**
* xmlParseXMLDecl:
* @ctxt: an XML parser context
*
* DEPRECATED: Internal function, don't use.
*
* parse an XML declaration header
*
* [23] XMLDecl ::= '<?xml' VersionInfo EncodingDecl? SDDecl? S? '?>'
*/
void
xmlParseXMLDecl(xmlParserCtxtPtr ctxt) {
xmlChar *version;
/*
* This value for standalone indicates that the document has an
* XML declaration but it does not have a standalone attribute.
* It will be overwritten later if a standalone attribute is found.
*/
ctxt->standalone = -2;
/*
* We know that '<?xml' is here.
*/
SKIP(5);
if (!IS_BLANK_CH(RAW)) {
xmlFatalErrMsg(ctxt, XML_ERR_SPACE_REQUIRED,
"Blank needed after '<?xml'\n");
}
SKIP_BLANKS;
/*
* We must have the VersionInfo here.
*/
version = xmlParseVersionInfo(ctxt);
if (version == NULL) {
xmlFatalErr(ctxt, XML_ERR_VERSION_MISSING, NULL);
} else {
if (!xmlStrEqual(version, (const xmlChar *) XML_DEFAULT_VERSION)) {
/*
* Changed here for XML-1.0 5th edition
*/
if (ctxt->options & XML_PARSE_OLD10) {
xmlFatalErrMsgStr(ctxt, XML_ERR_UNKNOWN_VERSION,
"Unsupported version '%s'\n",
version);
} else {
if ((version[0] == '1') && ((version[1] == '.'))) {
xmlWarningMsg(ctxt, XML_WAR_UNKNOWN_VERSION,
"Unsupported version '%s'\n",
version, NULL);
} else {
xmlFatalErrMsgStr(ctxt, XML_ERR_UNKNOWN_VERSION,
"Unsupported version '%s'\n",
version);
}
}
}
if (ctxt->version != NULL)
xmlFree((void *) ctxt->version);
ctxt->version = version;
}
/*
* We may have the encoding declaration
*/
if (!IS_BLANK_CH(RAW)) {
if ((RAW == '?') && (NXT(1) == '>')) {
SKIP(2);
return;
}
xmlFatalErrMsg(ctxt, XML_ERR_SPACE_REQUIRED, "Blank needed here\n");
}
xmlParseEncodingDecl(ctxt);
/*
* We may have the standalone status.
*/
if ((ctxt->encoding != NULL) && (!IS_BLANK_CH(RAW))) {
if ((RAW == '?') && (NXT(1) == '>')) {
SKIP(2);
return;
}
xmlFatalErrMsg(ctxt, XML_ERR_SPACE_REQUIRED, "Blank needed here\n");
}
/*
* We can grow the input buffer freely at that point
*/
GROW;
SKIP_BLANKS;
ctxt->standalone = xmlParseSDDecl(ctxt);
SKIP_BLANKS;
if ((RAW == '?') && (NXT(1) == '>')) {
SKIP(2);
} else if (RAW == '>') {
/* Deprecated old WD ... */
xmlFatalErr(ctxt, XML_ERR_XMLDECL_NOT_FINISHED, NULL);
NEXT;
} else {
int c;
xmlFatalErr(ctxt, XML_ERR_XMLDECL_NOT_FINISHED, NULL);
while ((PARSER_STOPPED(ctxt) == 0) &&
((c = CUR) != 0)) {
NEXT;
if (c == '>')
break;
}
}
}
/**
* xmlParseMisc:
* @ctxt: an XML parser context
*
* DEPRECATED: Internal function, don't use.
*
* parse an XML Misc* optional field.
*
* [27] Misc ::= Comment | PI | S
*/
void
xmlParseMisc(xmlParserCtxtPtr ctxt) {
while (PARSER_STOPPED(ctxt) == 0) {
SKIP_BLANKS;
GROW;
if ((RAW == '<') && (NXT(1) == '?')) {
xmlParsePI(ctxt);
} else if (CMP4(CUR_PTR, '<', '!', '-', '-')) {
xmlParseComment(ctxt);
} else {
break;
}
}
}
static void
xmlFinishDocument(xmlParserCtxtPtr ctxt) {
xmlDocPtr doc;
/*
* SAX: end of the document processing.
*/
if ((ctxt->sax) && (ctxt->sax->endDocument != NULL))
ctxt->sax->endDocument(ctxt->userData);
doc = ctxt->myDoc;
if (doc != NULL) {
if (ctxt->wellFormed) {
doc->properties |= XML_DOC_WELLFORMED;
if (ctxt->valid)
doc->properties |= XML_DOC_DTDVALID;
if (ctxt->nsWellFormed)
doc->properties |= XML_DOC_NSVALID;
}
if (ctxt->options & XML_PARSE_OLD10)
doc->properties |= XML_DOC_OLD10;
/*
* Remove locally kept entity definitions if the tree was not built
*/
if (xmlStrEqual(doc->version, SAX_COMPAT_MODE)) {
xmlFreeDoc(doc);
ctxt->myDoc = NULL;
}
}
}
/**
* xmlParseDocument:
* @ctxt: an XML parser context
*
* Parse an XML document and invoke the SAX handlers. This is useful
* if you're only interested in custom SAX callbacks. If you want a
* document tree, use xmlCtxtParseDocument.
*
* Returns 0, -1 in case of error.
*/
int
xmlParseDocument(xmlParserCtxtPtr ctxt) {
if ((ctxt == NULL) || (ctxt->input == NULL))
return(-1);
GROW;
/*
* SAX: detecting the level.
*/
xmlCtxtInitializeLate(ctxt);
if ((ctxt->sax) && (ctxt->sax->setDocumentLocator)) {
ctxt->sax->setDocumentLocator(ctxt->userData,
(xmlSAXLocator *) &xmlDefaultSAXLocator);
}
xmlDetectEncoding(ctxt);
if (CUR == 0) {
xmlFatalErr(ctxt, XML_ERR_DOCUMENT_EMPTY, NULL);
return(-1);
}
GROW;
if ((CMP5(CUR_PTR, '<', '?', 'x', 'm', 'l')) && (IS_BLANK_CH(NXT(5)))) {
/*
* Note that we will switch encoding on the fly.
*/
xmlParseXMLDecl(ctxt);
SKIP_BLANKS;
} else {
ctxt->version = xmlCharStrdup(XML_DEFAULT_VERSION);
if (ctxt->version == NULL) {
xmlErrMemory(ctxt);
return(-1);
}
}
if ((ctxt->sax) && (ctxt->sax->startDocument) && (!ctxt->disableSAX))
ctxt->sax->startDocument(ctxt->userData);
if ((ctxt->myDoc != NULL) && (ctxt->input != NULL) &&
(ctxt->input->buf != NULL) && (ctxt->input->buf->compressed >= 0)) {
ctxt->myDoc->compression = ctxt->input->buf->compressed;
}
/*
* The Misc part of the Prolog
*/
xmlParseMisc(ctxt);
/*
* Then possibly doc type declaration(s) and more Misc
* (doctypedecl Misc*)?
*/
GROW;
if (CMP9(CUR_PTR, '<', '!', 'D', 'O', 'C', 'T', 'Y', 'P', 'E')) {
ctxt->inSubset = 1;
xmlParseDocTypeDecl(ctxt);
if (RAW == '[') {
xmlParseInternalSubset(ctxt);
}
/*
* Create and update the external subset.
*/
ctxt->inSubset = 2;
if ((ctxt->sax != NULL) && (ctxt->sax->externalSubset != NULL) &&
(!ctxt->disableSAX))
ctxt->sax->externalSubset(ctxt->userData, ctxt->intSubName,
ctxt->extSubSystem, ctxt->extSubURI);
ctxt->inSubset = 0;
xmlCleanSpecialAttr(ctxt);
xmlParseMisc(ctxt);
}
/*
* Time to start parsing the tree itself
*/
GROW;
if (RAW != '<') {
if (ctxt->wellFormed)
xmlFatalErrMsg(ctxt, XML_ERR_DOCUMENT_EMPTY,
"Start tag expected, '<' not found\n");
} else {
xmlParseElement(ctxt);
/*
* The Misc part at the end
*/
xmlParseMisc(ctxt);
if (ctxt->input->cur < ctxt->input->end) {
if (ctxt->wellFormed)
xmlFatalErr(ctxt, XML_ERR_DOCUMENT_END, NULL);
} else if ((ctxt->input->buf != NULL) &&
(ctxt->input->buf->encoder != NULL) &&
(ctxt->input->buf->error == 0) &&
(!xmlBufIsEmpty(ctxt->input->buf->raw))) {
xmlFatalErrMsg(ctxt, XML_ERR_INVALID_CHAR,
"Truncated multi-byte sequence at EOF\n");
}
}
ctxt->instate = XML_PARSER_EOF;
xmlFinishDocument(ctxt);
if (! ctxt->wellFormed) {
ctxt->valid = 0;
return(-1);
}
return(0);
}
/**
* xmlParseExtParsedEnt:
* @ctxt: an XML parser context
*
* parse a general parsed entity
* An external general parsed entity is well-formed if it matches the
* production labeled extParsedEnt.
*
* [78] extParsedEnt ::= TextDecl? content
*
* Returns 0, -1 in case of error. the parser context is augmented
* as a result of the parsing.
*/
int
xmlParseExtParsedEnt(xmlParserCtxtPtr ctxt) {
if ((ctxt == NULL) || (ctxt->input == NULL))
return(-1);
xmlCtxtInitializeLate(ctxt);
if ((ctxt->sax) && (ctxt->sax->setDocumentLocator)) {
ctxt->sax->setDocumentLocator(ctxt->userData,
(xmlSAXLocator *) &xmlDefaultSAXLocator);
}
xmlDetectEncoding(ctxt);
if (CUR == 0) {
xmlFatalErr(ctxt, XML_ERR_DOCUMENT_EMPTY, NULL);
}
/*
* Check for the XMLDecl in the Prolog.
*/
GROW;
if ((CMP5(CUR_PTR, '<', '?', 'x', 'm', 'l')) && (IS_BLANK_CH(NXT(5)))) {
/*
* Note that we will switch encoding on the fly.
*/
xmlParseXMLDecl(ctxt);
SKIP_BLANKS;
} else {
ctxt->version = xmlCharStrdup(XML_DEFAULT_VERSION);
}
if ((ctxt->sax) && (ctxt->sax->startDocument) && (!ctxt->disableSAX))
ctxt->sax->startDocument(ctxt->userData);
/*
* Doing validity checking on chunk doesn't make sense
*/
ctxt->options &= ~XML_PARSE_DTDVALID;
ctxt->validate = 0;
ctxt->depth = 0;
xmlParseContentInternal(ctxt);
if (ctxt->input->cur < ctxt->input->end)
xmlFatalErr(ctxt, XML_ERR_NOT_WELL_BALANCED, NULL);
/*
* SAX: end of the document processing.
*/
if ((ctxt->sax) && (ctxt->sax->endDocument != NULL))
ctxt->sax->endDocument(ctxt->userData);
if (! ctxt->wellFormed) return(-1);
return(0);
}
#ifdef LIBXML_PUSH_ENABLED
/************************************************************************
* *
* Progressive parsing interfaces *
* *
************************************************************************/
/**
* xmlParseLookupChar:
* @ctxt: an XML parser context
* @c: character
*
* Check whether the input buffer contains a character.
*/
static int
xmlParseLookupChar(xmlParserCtxtPtr ctxt, int c) {
const xmlChar *cur;
if (ctxt->checkIndex == 0) {
cur = ctxt->input->cur + 1;
} else {
cur = ctxt->input->cur + ctxt->checkIndex;
}
if (memchr(cur, c, ctxt->input->end - cur) == NULL) {
size_t index = ctxt->input->end - ctxt->input->cur;
if (index > LONG_MAX) {
ctxt->checkIndex = 0;
return(1);
}
ctxt->checkIndex = index;
return(0);
} else {
ctxt->checkIndex = 0;
return(1);
}
}
/**
* xmlParseLookupString:
* @ctxt: an XML parser context
* @startDelta: delta to apply at the start
* @str: string
* @strLen: length of string
*
* Check whether the input buffer contains a string.
*/
static const xmlChar *
xmlParseLookupString(xmlParserCtxtPtr ctxt, size_t startDelta,
const char *str, size_t strLen) {
const xmlChar *cur, *term;
if (ctxt->checkIndex == 0) {
cur = ctxt->input->cur + startDelta;
} else {
cur = ctxt->input->cur + ctxt->checkIndex;
}
term = BAD_CAST strstr((const char *) cur, str);
if (term == NULL) {
const xmlChar *end = ctxt->input->end;
size_t index;
/* Rescan (strLen - 1) characters. */
if ((size_t) (end - cur) < strLen)
end = cur;
else
end -= strLen - 1;
index = end - ctxt->input->cur;
if (index > LONG_MAX) {
ctxt->checkIndex = 0;
return(ctxt->input->end - strLen);
}
ctxt->checkIndex = index;
} else {
ctxt->checkIndex = 0;
}
return(term);
}
/**
* xmlParseLookupCharData:
* @ctxt: an XML parser context
*
* Check whether the input buffer contains terminated char data.
*/
static int
xmlParseLookupCharData(xmlParserCtxtPtr ctxt) {
const xmlChar *cur = ctxt->input->cur + ctxt->checkIndex;
const xmlChar *end = ctxt->input->end;
size_t index;
while (cur < end) {
if ((*cur == '<') || (*cur == '&')) {
ctxt->checkIndex = 0;
return(1);
}
cur++;
}
index = cur - ctxt->input->cur;
if (index > LONG_MAX) {
ctxt->checkIndex = 0;
return(1);
}
ctxt->checkIndex = index;
return(0);
}
/**
* xmlParseLookupGt:
* @ctxt: an XML parser context
*
* Check whether there's enough data in the input buffer to finish parsing
* a start tag. This has to take quotes into account.
*/
static int
xmlParseLookupGt(xmlParserCtxtPtr ctxt) {
const xmlChar *cur;
const xmlChar *end = ctxt->input->end;
int state = ctxt->endCheckState;
size_t index;
if (ctxt->checkIndex == 0)
cur = ctxt->input->cur + 1;
else
cur = ctxt->input->cur + ctxt->checkIndex;
while (cur < end) {
if (state) {
if (*cur == state)
state = 0;
} else if (*cur == '\'' || *cur == '"') {
state = *cur;
} else if (*cur == '>') {
ctxt->checkIndex = 0;
ctxt->endCheckState = 0;
return(1);
}
cur++;
}
index = cur - ctxt->input->cur;
if (index > LONG_MAX) {
ctxt->checkIndex = 0;
ctxt->endCheckState = 0;
return(1);
}
ctxt->checkIndex = index;
ctxt->endCheckState = state;
return(0);
}
/**
* xmlParseLookupInternalSubset:
* @ctxt: an XML parser context
*
* Check whether there's enough data in the input buffer to finish parsing
* the internal subset.
*/
static int
xmlParseLookupInternalSubset(xmlParserCtxtPtr ctxt) {
/*
* Sorry, but progressive parsing of the internal subset is not
* supported. We first check that the full content of the internal
* subset is available and parsing is launched only at that point.
* Internal subset ends with "']' S? '>'" in an unescaped section and
* not in a ']]>' sequence which are conditional sections.
*/
const xmlChar *cur, *start;
const xmlChar *end = ctxt->input->end;
int state = ctxt->endCheckState;
size_t index;
if (ctxt->checkIndex == 0) {
cur = ctxt->input->cur + 1;
} else {
cur = ctxt->input->cur + ctxt->checkIndex;
}
start = cur;
while (cur < end) {
if (state == '-') {
if ((*cur == '-') &&
(cur[1] == '-') &&
(cur[2] == '>')) {
state = 0;
cur += 3;
start = cur;
continue;
}
}
else if (state == ']') {
if (*cur == '>') {
ctxt->checkIndex = 0;
ctxt->endCheckState = 0;
return(1);
}
if (IS_BLANK_CH(*cur)) {
state = ' ';
} else if (*cur != ']') {
state = 0;
start = cur;
continue;
}
}
else if (state == ' ') {
if (*cur == '>') {
ctxt->checkIndex = 0;
ctxt->endCheckState = 0;
return(1);
}
if (!IS_BLANK_CH(*cur)) {
state = 0;
start = cur;
continue;
}
}
else if (state != 0) {
if (*cur == state) {
state = 0;
start = cur + 1;
}
}
else if (*cur == '<') {
if ((cur[1] == '!') &&
(cur[2] == '-') &&
(cur[3] == '-')) {
state = '-';
cur += 4;
/* Don't treat <!--> as comment */
start = cur;
continue;
}
}
else if ((*cur == '"') || (*cur == '\'') || (*cur == ']')) {
state = *cur;
}
cur++;
}
/*
* Rescan the three last characters to detect "<!--" and "-->"
* split across chunks.
*/
if ((state == 0) || (state == '-')) {
if (cur - start < 3)
cur = start;
else
cur -= 3;
}
index = cur - ctxt->input->cur;
if (index > LONG_MAX) {
ctxt->checkIndex = 0;
ctxt->endCheckState = 0;
return(1);
}
ctxt->checkIndex = index;
ctxt->endCheckState = state;
return(0);
}
/**
* xmlCheckCdataPush:
* @cur: pointer to the block of characters
* @len: length of the block in bytes
* @complete: 1 if complete CDATA block is passed in, 0 if partial block
*
* Check that the block of characters is okay as SCdata content [20]
*
* Returns the number of bytes to pass if okay, a negative index where an
* UTF-8 error occurred otherwise
*/
static int
xmlCheckCdataPush(const xmlChar *utf, int len, int complete) {
int ix;
unsigned char c;
int codepoint;
if ((utf == NULL) || (len <= 0))
return(0);
for (ix = 0; ix < len;) { /* string is 0-terminated */
c = utf[ix];
if ((c & 0x80) == 0x00) { /* 1-byte code, starts with 10 */
if (c >= 0x20)
ix++;
else if ((c == 0xA) || (c == 0xD) || (c == 0x9))
ix++;
else
return(-ix);
} else if ((c & 0xe0) == 0xc0) {/* 2-byte code, starts with 110 */
if (ix + 2 > len) return(complete ? -ix : ix);
if ((utf[ix+1] & 0xc0 ) != 0x80)
return(-ix);
codepoint = (utf[ix] & 0x1f) << 6;
codepoint |= utf[ix+1] & 0x3f;
if (!xmlIsCharQ(codepoint))
return(-ix);
ix += 2;
} else if ((c & 0xf0) == 0xe0) {/* 3-byte code, starts with 1110 */
if (ix + 3 > len) return(complete ? -ix : ix);
if (((utf[ix+1] & 0xc0) != 0x80) ||
((utf[ix+2] & 0xc0) != 0x80))
return(-ix);
codepoint = (utf[ix] & 0xf) << 12;
codepoint |= (utf[ix+1] & 0x3f) << 6;
codepoint |= utf[ix+2] & 0x3f;
if (!xmlIsCharQ(codepoint))
return(-ix);
ix += 3;
} else if ((c & 0xf8) == 0xf0) {/* 4-byte code, starts with 11110 */
if (ix + 4 > len) return(complete ? -ix : ix);
if (((utf[ix+1] & 0xc0) != 0x80) ||
((utf[ix+2] & 0xc0) != 0x80) ||
((utf[ix+3] & 0xc0) != 0x80))
return(-ix);
codepoint = (utf[ix] & 0x7) << 18;
codepoint |= (utf[ix+1] & 0x3f) << 12;
codepoint |= (utf[ix+2] & 0x3f) << 6;
codepoint |= utf[ix+3] & 0x3f;
if (!xmlIsCharQ(codepoint))
return(-ix);
ix += 4;
} else /* unknown encoding */
return(-ix);
}
return(ix);
}
/**
* xmlParseTryOrFinish:
* @ctxt: an XML parser context
* @terminate: last chunk indicator
*
* Try to progress on parsing
*
* Returns zero if no parsing was possible
*/
static int
xmlParseTryOrFinish(xmlParserCtxtPtr ctxt, int terminate) {
int ret = 0;
size_t avail;
xmlChar cur, next;
if (ctxt->input == NULL)
return(0);
if ((ctxt->input != NULL) &&
(ctxt->input->cur - ctxt->input->base > 4096)) {
xmlParserShrink(ctxt);
}
while (ctxt->disableSAX == 0) {
avail = ctxt->input->end - ctxt->input->cur;
if (avail < 1)
goto done;
switch (ctxt->instate) {
case XML_PARSER_EOF:
/*
* Document parsing is done !
*/
goto done;
case XML_PARSER_START:
/*
* Very first chars read from the document flow.
*/
if ((!terminate) && (avail < 4))
goto done;
/*
* We need more bytes to detect EBCDIC code pages.
* See xmlDetectEBCDIC.
*/
if ((CMP4(CUR_PTR, 0x4C, 0x6F, 0xA7, 0x94)) &&
(!terminate) && (avail < 200))
goto done;
xmlDetectEncoding(ctxt);
ctxt->instate = XML_PARSER_XML_DECL;
break;
case XML_PARSER_XML_DECL:
if ((!terminate) && (avail < 2))
goto done;
cur = ctxt->input->cur[0];
next = ctxt->input->cur[1];
if ((cur == '<') && (next == '?')) {
/* PI or XML decl */
if ((!terminate) &&
(!xmlParseLookupString(ctxt, 2, "?>", 2)))
goto done;
if ((ctxt->input->cur[2] == 'x') &&
(ctxt->input->cur[3] == 'm') &&
(ctxt->input->cur[4] == 'l') &&
(IS_BLANK_CH(ctxt->input->cur[5]))) {
ret += 5;
xmlParseXMLDecl(ctxt);
} else {
ctxt->version = xmlCharStrdup(XML_DEFAULT_VERSION);
if (ctxt->version == NULL) {
xmlErrMemory(ctxt);
break;
}
}
} else {
ctxt->version = xmlCharStrdup(XML_DEFAULT_VERSION);
if (ctxt->version == NULL) {
xmlErrMemory(ctxt);
break;
}
}
if ((ctxt->sax) && (ctxt->sax->setDocumentLocator)) {
ctxt->sax->setDocumentLocator(ctxt->userData,
(xmlSAXLocator *) &xmlDefaultSAXLocator);
}
if ((ctxt->sax) && (ctxt->sax->startDocument) &&
(!ctxt->disableSAX))
ctxt->sax->startDocument(ctxt->userData);
ctxt->instate = XML_PARSER_MISC;
break;
case XML_PARSER_START_TAG: {
const xmlChar *name;
const xmlChar *prefix = NULL;
const xmlChar *URI = NULL;
int line = ctxt->input->line;
int nbNs = 0;
if ((!terminate) && (avail < 2))
goto done;
cur = ctxt->input->cur[0];
if (cur != '<') {
xmlFatalErrMsg(ctxt, XML_ERR_DOCUMENT_EMPTY,
"Start tag expected, '<' not found");
ctxt->instate = XML_PARSER_EOF;
xmlFinishDocument(ctxt);
goto done;
}
if ((!terminate) && (!xmlParseLookupGt(ctxt)))
goto done;
if (ctxt->spaceNr == 0)
spacePush(ctxt, -1);
else if (*ctxt->space == -2)
spacePush(ctxt, -1);
else
spacePush(ctxt, *ctxt->space);
#ifdef LIBXML_SAX1_ENABLED
if (ctxt->sax2)
#endif /* LIBXML_SAX1_ENABLED */
name = xmlParseStartTag2(ctxt, &prefix, &URI, &nbNs);
#ifdef LIBXML_SAX1_ENABLED
else
name = xmlParseStartTag(ctxt);
#endif /* LIBXML_SAX1_ENABLED */
if (name == NULL) {
spacePop(ctxt);
ctxt->instate = XML_PARSER_EOF;
xmlFinishDocument(ctxt);
goto done;
}
#ifdef LIBXML_VALID_ENABLED
/*
* [ VC: Root Element Type ]
* The Name in the document type declaration must match
* the element type of the root element.
*/
if (ctxt->validate && ctxt->wellFormed && ctxt->myDoc &&
ctxt->node && (ctxt->node == ctxt->myDoc->children))
ctxt->valid &= xmlValidateRoot(&ctxt->vctxt, ctxt->myDoc);
#endif /* LIBXML_VALID_ENABLED */
/*
* Check for an Empty Element.
*/
if ((RAW == '/') && (NXT(1) == '>')) {
SKIP(2);
if (ctxt->sax2) {
if ((ctxt->sax != NULL) &&
(ctxt->sax->endElementNs != NULL) &&
(!ctxt->disableSAX))
ctxt->sax->endElementNs(ctxt->userData, name,
prefix, URI);
if (nbNs > 0)
xmlParserNsPop(ctxt, nbNs);
#ifdef LIBXML_SAX1_ENABLED
} else {
if ((ctxt->sax != NULL) &&
(ctxt->sax->endElement != NULL) &&
(!ctxt->disableSAX))
ctxt->sax->endElement(ctxt->userData, name);
#endif /* LIBXML_SAX1_ENABLED */
}
spacePop(ctxt);
} else if (RAW == '>') {
NEXT;
nameNsPush(ctxt, name, prefix, URI, line, nbNs);
} else {
xmlFatalErrMsgStr(ctxt, XML_ERR_GT_REQUIRED,
"Couldn't find end of Start Tag %s\n",
name);
nodePop(ctxt);
spacePop(ctxt);
if (nbNs > 0)
xmlParserNsPop(ctxt, nbNs);
}
if (ctxt->nameNr == 0)
ctxt->instate = XML_PARSER_EPILOG;
else
ctxt->instate = XML_PARSER_CONTENT;
break;
}
case XML_PARSER_CONTENT: {
cur = ctxt->input->cur[0];
if (cur == '<') {
if ((!terminate) && (avail < 2))
goto done;
next = ctxt->input->cur[1];
if (next == '/') {
ctxt->instate = XML_PARSER_END_TAG;
break;
} else if (next == '?') {
if ((!terminate) &&
(!xmlParseLookupString(ctxt, 2, "?>", 2)))
goto done;
xmlParsePI(ctxt);
ctxt->instate = XML_PARSER_CONTENT;
break;
} else if (next == '!') {
if ((!terminate) && (avail < 3))
goto done;
next = ctxt->input->cur[2];
if (next == '-') {
if ((!terminate) && (avail < 4))
goto done;
if (ctxt->input->cur[3] == '-') {
if ((!terminate) &&
(!xmlParseLookupString(ctxt, 4, "-->", 3)))
goto done;
xmlParseComment(ctxt);
ctxt->instate = XML_PARSER_CONTENT;
break;
}
} else if (next == '[') {
if ((!terminate) && (avail < 9))
goto done;
if ((ctxt->input->cur[2] == '[') &&
(ctxt->input->cur[3] == 'C') &&
(ctxt->input->cur[4] == 'D') &&
(ctxt->input->cur[5] == 'A') &&
(ctxt->input->cur[6] == 'T') &&
(ctxt->input->cur[7] == 'A') &&
(ctxt->input->cur[8] == '[')) {
SKIP(9);
ctxt->instate = XML_PARSER_CDATA_SECTION;
break;
}
}
}
} else if (cur == '&') {
if ((!terminate) && (!xmlParseLookupChar(ctxt, ';')))
goto done;
xmlParseReference(ctxt);
break;
} else {
/* TODO Avoid the extra copy, handle directly !!! */
/*
* Goal of the following test is:
* - minimize calls to the SAX 'character' callback
* when they are mergeable
* - handle an problem for isBlank when we only parse
* a sequence of blank chars and the next one is
* not available to check against '<' presence.
* - tries to homogenize the differences in SAX
* callbacks between the push and pull versions
* of the parser.
*/
if (avail < XML_PARSER_BIG_BUFFER_SIZE) {
if ((!terminate) && (!xmlParseLookupCharData(ctxt)))
goto done;
}
ctxt->checkIndex = 0;
xmlParseCharDataInternal(ctxt, !terminate);
break;
}
ctxt->instate = XML_PARSER_START_TAG;
break;
}
case XML_PARSER_END_TAG:
if ((!terminate) && (!xmlParseLookupChar(ctxt, '>')))
goto done;
if (ctxt->sax2) {
xmlParseEndTag2(ctxt, &ctxt->pushTab[ctxt->nameNr - 1]);
nameNsPop(ctxt);
}
#ifdef LIBXML_SAX1_ENABLED
else
xmlParseEndTag1(ctxt, 0);
#endif /* LIBXML_SAX1_ENABLED */
if (ctxt->nameNr == 0) {
ctxt->instate = XML_PARSER_EPILOG;
} else {
ctxt->instate = XML_PARSER_CONTENT;
}
break;
case XML_PARSER_CDATA_SECTION: {
/*
* The Push mode need to have the SAX callback for
* cdataBlock merge back contiguous callbacks.
*/
const xmlChar *term;
if (terminate) {
/*
* Don't call xmlParseLookupString. If 'terminate'
* is set, checkIndex is invalid.
*/
term = BAD_CAST strstr((const char *) ctxt->input->cur,
"]]>");
} else {
term = xmlParseLookupString(ctxt, 0, "]]>", 3);
}
if (term == NULL) {
int tmp, size;
if (terminate) {
/* Unfinished CDATA section */
size = ctxt->input->end - ctxt->input->cur;
} else {
if (avail < XML_PARSER_BIG_BUFFER_SIZE + 2)
goto done;
ctxt->checkIndex = 0;
/* XXX: Why don't we pass the full buffer? */
size = XML_PARSER_BIG_BUFFER_SIZE;
}
tmp = xmlCheckCdataPush(ctxt->input->cur, size, 0);
if (tmp <= 0) {
tmp = -tmp;
ctxt->input->cur += tmp;
goto encoding_error;
}
if ((ctxt->sax != NULL) && (!ctxt->disableSAX)) {
if (ctxt->sax->cdataBlock != NULL)
ctxt->sax->cdataBlock(ctxt->userData,
ctxt->input->cur, tmp);
else if (ctxt->sax->characters != NULL)
ctxt->sax->characters(ctxt->userData,
ctxt->input->cur, tmp);
}
SKIPL(tmp);
} else {
int base = term - CUR_PTR;
int tmp;
tmp = xmlCheckCdataPush(ctxt->input->cur, base, 1);
if ((tmp < 0) || (tmp != base)) {
tmp = -tmp;
ctxt->input->cur += tmp;
goto encoding_error;
}
if ((ctxt->sax != NULL) && (base == 0) &&
(ctxt->sax->cdataBlock != NULL) &&
(!ctxt->disableSAX)) {
/*
* Special case to provide identical behaviour
* between pull and push parsers on enpty CDATA
* sections
*/
if ((ctxt->input->cur - ctxt->input->base >= 9) &&
(!strncmp((const char *)&ctxt->input->cur[-9],
"<![CDATA[", 9)))
ctxt->sax->cdataBlock(ctxt->userData,
BAD_CAST "", 0);
} else if ((ctxt->sax != NULL) && (base > 0) &&
(!ctxt->disableSAX)) {
if (ctxt->sax->cdataBlock != NULL)
ctxt->sax->cdataBlock(ctxt->userData,
ctxt->input->cur, base);
else if (ctxt->sax->characters != NULL)
ctxt->sax->characters(ctxt->userData,
ctxt->input->cur, base);
}
SKIPL(base + 3);
ctxt->instate = XML_PARSER_CONTENT;
}
break;
}
case XML_PARSER_MISC:
case XML_PARSER_PROLOG:
case XML_PARSER_EPILOG:
SKIP_BLANKS;
avail = ctxt->input->end - ctxt->input->cur;
if (avail < 1)
goto done;
if (ctxt->input->cur[0] == '<') {
if ((!terminate) && (avail < 2))
goto done;
next = ctxt->input->cur[1];
if (next == '?') {
if ((!terminate) &&
(!xmlParseLookupString(ctxt, 2, "?>", 2)))
goto done;
xmlParsePI(ctxt);
break;
} else if (next == '!') {
if ((!terminate) && (avail < 3))
goto done;
if (ctxt->input->cur[2] == '-') {
if ((!terminate) && (avail < 4))
goto done;
if (ctxt->input->cur[3] == '-') {
if ((!terminate) &&
(!xmlParseLookupString(ctxt, 4, "-->", 3)))
goto done;
xmlParseComment(ctxt);
break;
}
} else if (ctxt->instate == XML_PARSER_MISC) {
if ((!terminate) && (avail < 9))
goto done;
if ((ctxt->input->cur[2] == 'D') &&
(ctxt->input->cur[3] == 'O') &&
(ctxt->input->cur[4] == 'C') &&
(ctxt->input->cur[5] == 'T') &&
(ctxt->input->cur[6] == 'Y') &&
(ctxt->input->cur[7] == 'P') &&
(ctxt->input->cur[8] == 'E')) {
if ((!terminate) && (!xmlParseLookupGt(ctxt)))
goto done;
ctxt->inSubset = 1;
xmlParseDocTypeDecl(ctxt);
if (RAW == '[') {
ctxt->instate = XML_PARSER_DTD;
} else {
/*
* Create and update the external subset.
*/
ctxt->inSubset = 2;
if ((ctxt->sax != NULL) &&
(!ctxt->disableSAX) &&
(ctxt->sax->externalSubset != NULL))
ctxt->sax->externalSubset(
ctxt->userData,
ctxt->intSubName,
ctxt->extSubSystem,
ctxt->extSubURI);
ctxt->inSubset = 0;
xmlCleanSpecialAttr(ctxt);
ctxt->instate = XML_PARSER_PROLOG;
}
break;
}
}
}
}
if (ctxt->instate == XML_PARSER_EPILOG) {
if (ctxt->errNo == XML_ERR_OK)
xmlFatalErr(ctxt, XML_ERR_DOCUMENT_END, NULL);
ctxt->instate = XML_PARSER_EOF;
xmlFinishDocument(ctxt);
} else {
ctxt->instate = XML_PARSER_START_TAG;
}
break;
case XML_PARSER_DTD: {
if ((!terminate) && (!xmlParseLookupInternalSubset(ctxt)))
goto done;
xmlParseInternalSubset(ctxt);
ctxt->inSubset = 2;
if ((ctxt->sax != NULL) && (!ctxt->disableSAX) &&
(ctxt->sax->externalSubset != NULL))
ctxt->sax->externalSubset(ctxt->userData, ctxt->intSubName,
ctxt->extSubSystem, ctxt->extSubURI);
ctxt->inSubset = 0;
xmlCleanSpecialAttr(ctxt);
ctxt->instate = XML_PARSER_PROLOG;
break;
}
default:
xmlFatalErrMsg(ctxt, XML_ERR_INTERNAL_ERROR,
"PP: internal error\n");
ctxt->instate = XML_PARSER_EOF;
break;
}
}
done:
return(ret);
encoding_error:
/* Only report the first error */
if ((ctxt->input->flags & XML_INPUT_ENCODING_ERROR) == 0) {
xmlCtxtErrIO(ctxt, XML_ERR_INVALID_ENCODING, NULL);
ctxt->input->flags |= XML_INPUT_ENCODING_ERROR;
}
return(0);
}
/**
* xmlParseChunk:
* @ctxt: an XML parser context
* @chunk: chunk of memory
* @size: size of chunk in bytes
* @terminate: last chunk indicator
*
* Parse a chunk of memory in push parser mode.
*
* Assumes that the parser context was initialized with
* xmlCreatePushParserCtxt.
*
* The last chunk, which will often be empty, must be marked with
* the @terminate flag. With the default SAX callbacks, the resulting
* document will be available in ctxt->myDoc. This pointer will not
* be freed by the library.
*
* If the document isn't well-formed, ctxt->myDoc is set to NULL.
* The push parser doesn't support recovery mode.
*
* Returns an xmlParserErrors code (0 on success).
*/
int
xmlParseChunk(xmlParserCtxtPtr ctxt, const char *chunk, int size,
int terminate) {
size_t curBase;
size_t maxLength;
int end_in_lf = 0;
if ((ctxt == NULL) || (size < 0))
return(XML_ERR_ARGUMENT);
if (ctxt->disableSAX != 0)
return(ctxt->errNo);
if (ctxt->input == NULL)
return(XML_ERR_INTERNAL_ERROR);
ctxt->input->flags |= XML_INPUT_PROGRESSIVE;
if (ctxt->instate == XML_PARSER_START)
xmlCtxtInitializeLate(ctxt);
if ((size > 0) && (chunk != NULL) && (!terminate) &&
(chunk[size - 1] == '\r')) {
end_in_lf = 1;
size--;
}
if ((size > 0) && (chunk != NULL) && (ctxt->input != NULL) &&
(ctxt->input->buf != NULL)) {
size_t pos = ctxt->input->cur - ctxt->input->base;
int res;
res = xmlParserInputBufferPush(ctxt->input->buf, size, chunk);
xmlBufUpdateInput(ctxt->input->buf->buffer, ctxt->input, pos);
if (res < 0) {
xmlCtxtErrIO(ctxt, ctxt->input->buf->error, NULL);
xmlHaltParser(ctxt);
return(ctxt->errNo);
}
}
xmlParseTryOrFinish(ctxt, terminate);
curBase = ctxt->input->cur - ctxt->input->base;
maxLength = (ctxt->options & XML_PARSE_HUGE) ?
XML_MAX_HUGE_LENGTH :
XML_MAX_LOOKUP_LIMIT;
if (curBase > maxLength) {
xmlFatalErr(ctxt, XML_ERR_RESOURCE_LIMIT,
"Buffer size limit exceeded, try XML_PARSE_HUGE\n");
xmlHaltParser(ctxt);
}
if ((ctxt->errNo != XML_ERR_OK) && (ctxt->disableSAX == 1))
return(ctxt->errNo);
if ((end_in_lf == 1) && (ctxt->input != NULL) &&
(ctxt->input->buf != NULL)) {
size_t pos = ctxt->input->cur - ctxt->input->base;
int res;
res = xmlParserInputBufferPush(ctxt->input->buf, 1, "\r");
xmlBufUpdateInput(ctxt->input->buf->buffer, ctxt->input, pos);
if (res < 0) {
xmlCtxtErrIO(ctxt, ctxt->input->buf->error, NULL);
xmlHaltParser(ctxt);
return(ctxt->errNo);
}
}
if (terminate) {
/*
* Check for termination
*/
if ((ctxt->instate != XML_PARSER_EOF) &&
(ctxt->instate != XML_PARSER_EPILOG)) {
if (ctxt->nameNr > 0) {
const xmlChar *name = ctxt->nameTab[ctxt->nameNr - 1];
int line = ctxt->pushTab[ctxt->nameNr - 1].line;
xmlFatalErrMsgStrIntStr(ctxt, XML_ERR_TAG_NOT_FINISHED,
"Premature end of data in tag %s line %d\n",
name, line, NULL);
} else if (ctxt->instate == XML_PARSER_START) {
xmlFatalErr(ctxt, XML_ERR_DOCUMENT_EMPTY, NULL);
} else {
xmlFatalErrMsg(ctxt, XML_ERR_DOCUMENT_EMPTY,
"Start tag expected, '<' not found\n");
}
} else if ((ctxt->input->buf != NULL) &&
(ctxt->input->buf->encoder != NULL) &&
(ctxt->input->buf->error == 0) &&
(!xmlBufIsEmpty(ctxt->input->buf->raw))) {
xmlFatalErrMsg(ctxt, XML_ERR_INVALID_CHAR,
"Truncated multi-byte sequence at EOF\n");
}
if (ctxt->instate != XML_PARSER_EOF) {
ctxt->instate = XML_PARSER_EOF;
xmlFinishDocument(ctxt);
}
}
if (ctxt->wellFormed == 0)
return((xmlParserErrors) ctxt->errNo);
else
return(0);
}
/************************************************************************
* *
* I/O front end functions to the parser *
* *
************************************************************************/
/**
* xmlCreatePushParserCtxt:
* @sax: a SAX handler (optional)
* @user_data: user data for SAX callbacks (optional)
* @chunk: initial chunk (optional, deprecated)
* @size: size of initial chunk in bytes
* @filename: file name or URI (optional)
*
* Create a parser context for using the XML parser in push mode.
* See xmlParseChunk.
*
* Passing an initial chunk is useless and deprecated.
*
* @filename is used as base URI to fetch external entities and for
* error reports.
*
* Returns the new parser context or NULL if a memory allocation
* failed.
*/
xmlParserCtxtPtr
xmlCreatePushParserCtxt(xmlSAXHandlerPtr sax, void *user_data,
const char *chunk, int size, const char *filename) {
xmlParserCtxtPtr ctxt;
xmlParserInputPtr input;
ctxt = xmlNewSAXParserCtxt(sax, user_data);
if (ctxt == NULL)
return(NULL);
ctxt->options &= ~XML_PARSE_NODICT;
ctxt->dictNames = 1;
input = xmlInputCreatePush(filename, chunk, size);
if (input == NULL) {
xmlFreeParserCtxt(ctxt);
return(NULL);
}
inputPush(ctxt, input);
return(ctxt);
}
#endif /* LIBXML_PUSH_ENABLED */
/**
* xmlStopParser:
* @ctxt: an XML parser context
*
* Blocks further parser processing
*/
void
xmlStopParser(xmlParserCtxtPtr ctxt) {
if (ctxt == NULL)
return;
xmlHaltParser(ctxt);
if (ctxt->errNo != XML_ERR_NO_MEMORY)
ctxt->errNo = XML_ERR_USER_STOP;
}
/**
* xmlCreateIOParserCtxt:
* @sax: a SAX handler (optional)
* @user_data: user data for SAX callbacks (optional)
* @ioread: an I/O read function
* @ioclose: an I/O close function (optional)
* @ioctx: an I/O handler
* @enc: the charset encoding if known (deprecated)
*
* Create a parser context for using the XML parser with an existing
* I/O stream
*
* Returns the new parser context or NULL
*/
xmlParserCtxtPtr
xmlCreateIOParserCtxt(xmlSAXHandlerPtr sax, void *user_data,
xmlInputReadCallback ioread,
xmlInputCloseCallback ioclose,
void *ioctx, xmlCharEncoding enc) {
xmlParserCtxtPtr ctxt;
xmlParserInputPtr input;
const char *encoding;
ctxt = xmlNewSAXParserCtxt(sax, user_data);
if (ctxt == NULL)
return(NULL);
encoding = xmlGetCharEncodingName(enc);
input = xmlNewInputIO(ctxt, NULL, ioread, ioclose, ioctx, encoding, 0);
if (input == NULL) {
xmlFreeParserCtxt(ctxt);
return (NULL);
}
inputPush(ctxt, input);
return(ctxt);
}
#ifdef LIBXML_VALID_ENABLED
/************************************************************************
* *
* Front ends when parsing a DTD *
* *
************************************************************************/
/**
* xmlIOParseDTD:
* @sax: the SAX handler block or NULL
* @input: an Input Buffer
* @enc: the charset encoding if known
*
* Load and parse a DTD
*
* Returns the resulting xmlDtdPtr or NULL in case of error.
* @input will be freed by the function in any case.
*/
xmlDtdPtr
xmlIOParseDTD(xmlSAXHandlerPtr sax, xmlParserInputBufferPtr input,
xmlCharEncoding enc) {
xmlDtdPtr ret = NULL;
xmlParserCtxtPtr ctxt;
xmlParserInputPtr pinput = NULL;
if (input == NULL)
return(NULL);
ctxt = xmlNewSAXParserCtxt(sax, NULL);
if (ctxt == NULL) {
xmlFreeParserInputBuffer(input);
return(NULL);
}
/*
* generate a parser input from the I/O handler
*/
pinput = xmlNewIOInputStream(ctxt, input, XML_CHAR_ENCODING_NONE);
if (pinput == NULL) {
xmlFreeParserInputBuffer(input);
xmlFreeParserCtxt(ctxt);
return(NULL);
}
/*
* plug some encoding conversion routines here.
*/
if (xmlPushInput(ctxt, pinput) < 0) {
xmlFreeParserCtxt(ctxt);
return(NULL);
}
if (enc != XML_CHAR_ENCODING_NONE) {
xmlSwitchEncoding(ctxt, enc);
}
/*
* let's parse that entity knowing it's an external subset.
*/
ctxt->myDoc = xmlNewDoc(BAD_CAST "1.0");
if (ctxt->myDoc == NULL) {
xmlErrMemory(ctxt);
return(NULL);
}
ctxt->myDoc->properties = XML_DOC_INTERNAL;
ctxt->myDoc->extSubset = xmlNewDtd(ctxt->myDoc, BAD_CAST "none",
BAD_CAST "none", BAD_CAST "none");
xmlParseExternalSubset(ctxt, BAD_CAST "none", BAD_CAST "none");
if (ctxt->myDoc != NULL) {
if (ctxt->wellFormed) {
ret = ctxt->myDoc->extSubset;
ctxt->myDoc->extSubset = NULL;
if (ret != NULL) {
xmlNodePtr tmp;
ret->doc = NULL;
tmp = ret->children;
while (tmp != NULL) {
tmp->doc = NULL;
tmp = tmp->next;
}
}
} else {
ret = NULL;
}
xmlFreeDoc(ctxt->myDoc);
ctxt->myDoc = NULL;
}
xmlFreeParserCtxt(ctxt);
return(ret);
}
/**
* xmlSAXParseDTD:
* @sax: the SAX handler block
* @ExternalID: a NAME* containing the External ID of the DTD
* @SystemID: a NAME* containing the URL to the DTD
*
* DEPRECATED: Don't use.
*
* Load and parse an external subset.
*
* Returns the resulting xmlDtdPtr or NULL in case of error.
*/
xmlDtdPtr
xmlSAXParseDTD(xmlSAXHandlerPtr sax, const xmlChar *ExternalID,
const xmlChar *SystemID) {
xmlDtdPtr ret = NULL;
xmlParserCtxtPtr ctxt;
xmlParserInputPtr input = NULL;
xmlChar* systemIdCanonic;
if ((ExternalID == NULL) && (SystemID == NULL)) return(NULL);
ctxt = xmlNewSAXParserCtxt(sax, NULL);
if (ctxt == NULL) {
return(NULL);
}
/*
* Canonicalise the system ID
*/
systemIdCanonic = xmlCanonicPath(SystemID);
if ((SystemID != NULL) && (systemIdCanonic == NULL)) {
xmlFreeParserCtxt(ctxt);
return(NULL);
}
/*
* Ask the Entity resolver to load the damn thing
*/
if ((ctxt->sax != NULL) && (ctxt->sax->resolveEntity != NULL))
input = ctxt->sax->resolveEntity(ctxt->userData, ExternalID,
systemIdCanonic);
if (input == NULL) {
xmlFreeParserCtxt(ctxt);
if (systemIdCanonic != NULL)
xmlFree(systemIdCanonic);
return(NULL);
}
/*
* plug some encoding conversion routines here.
*/
if (xmlPushInput(ctxt, input) < 0) {
xmlFreeParserCtxt(ctxt);
if (systemIdCanonic != NULL)
xmlFree(systemIdCanonic);
return(NULL);
}
xmlDetectEncoding(ctxt);
if (input->filename == NULL)
input->filename = (char *) systemIdCanonic;
else
xmlFree(systemIdCanonic);
/*
* let's parse that entity knowing it's an external subset.
*/
ctxt->myDoc = xmlNewDoc(BAD_CAST "1.0");
if (ctxt->myDoc == NULL) {
xmlErrMemory(ctxt);
xmlFreeParserCtxt(ctxt);
return(NULL);
}
ctxt->myDoc->properties = XML_DOC_INTERNAL;
ctxt->myDoc->extSubset = xmlNewDtd(ctxt->myDoc, BAD_CAST "none",
ExternalID, SystemID);
if (ctxt->myDoc->extSubset == NULL) {
xmlFreeDoc(ctxt->myDoc);
xmlFreeParserCtxt(ctxt);
return(NULL);
}
xmlParseExternalSubset(ctxt, ExternalID, SystemID);
if (ctxt->myDoc != NULL) {
if (ctxt->wellFormed) {
ret = ctxt->myDoc->extSubset;
ctxt->myDoc->extSubset = NULL;
if (ret != NULL) {
xmlNodePtr tmp;
ret->doc = NULL;
tmp = ret->children;
while (tmp != NULL) {
tmp->doc = NULL;
tmp = tmp->next;
}
}
} else {
ret = NULL;
}
xmlFreeDoc(ctxt->myDoc);
ctxt->myDoc = NULL;
}
xmlFreeParserCtxt(ctxt);
return(ret);
}
/**
* xmlParseDTD:
* @ExternalID: a NAME* containing the External ID of the DTD
* @SystemID: a NAME* containing the URL to the DTD
*
* Load and parse an external subset.
*
* Returns the resulting xmlDtdPtr or NULL in case of error.
*/
xmlDtdPtr
xmlParseDTD(const xmlChar *ExternalID, const xmlChar *SystemID) {
return(xmlSAXParseDTD(NULL, ExternalID, SystemID));
}
#endif /* LIBXML_VALID_ENABLED */
/************************************************************************
* *
* Front ends when parsing an Entity *
* *
************************************************************************/
static xmlNodePtr
xmlCtxtParseContent(xmlParserCtxtPtr ctxt, xmlParserInputPtr input,
int hasTextDecl, int buildTree) {
xmlNodePtr root = NULL;
xmlNodePtr list = NULL;
xmlChar *rootName = BAD_CAST "#root";
int result;
if (buildTree) {
root = xmlNewDocNode(ctxt->myDoc, NULL, rootName, NULL);
if (root == NULL) {
xmlErrMemory(ctxt);
goto error;
}
}
if (xmlPushInput(ctxt, input) < 0)
goto error;
nameNsPush(ctxt, rootName, NULL, NULL, 0, 0);
spacePush(ctxt, -1);
if (buildTree)
nodePush(ctxt, root);
if (hasTextDecl) {
xmlDetectEncoding(ctxt);
/*
* Parse a possible text declaration first
*/
if ((CMP5(CUR_PTR, '<', '?', 'x', 'm', 'l')) &&
(IS_BLANK_CH(NXT(5)))) {
xmlParseTextDecl(ctxt);
/*
* An XML-1.0 document can't reference an entity not XML-1.0
*/
if ((xmlStrEqual(ctxt->version, BAD_CAST "1.0")) &&
(!xmlStrEqual(ctxt->input->version, BAD_CAST "1.0"))) {
xmlFatalErrMsg(ctxt, XML_ERR_VERSION_MISMATCH,
"Version mismatch between document and "
"entity\n");
}
}
}
xmlParseContentInternal(ctxt);
if (ctxt->input->cur < ctxt->input->end)
xmlFatalErr(ctxt, XML_ERR_NOT_WELL_BALANCED, NULL);
if ((ctxt->wellFormed) ||
((ctxt->recovery) && (ctxt->errNo != XML_ERR_NO_MEMORY))) {
if (root != NULL) {
xmlNodePtr cur;
/*
* Return the newly created nodeset after unlinking it from
* its pseudo parent.
*/
cur = root->children;
list = cur;
while (cur != NULL) {
cur->parent = NULL;
cur = cur->next;
}
root->children = NULL;
root->last = NULL;
}
}
/*
* Read the rest of the stream in case of errors. We want
* to account for the whole entity size.
*/
do {
ctxt->input->cur = ctxt->input->end;
xmlParserShrink(ctxt);
result = xmlParserGrow(ctxt);
} while (result > 0);
if (buildTree)
nodePop(ctxt);
namePop(ctxt);
spacePop(ctxt);
/* xmlPopInput would free the stream */
inputPop(ctxt);
error:
xmlFreeNode(root);
return(list);
}
static void
xmlCtxtParseEntity(xmlParserCtxtPtr ctxt, xmlEntityPtr ent) {
xmlParserInputPtr input;
xmlNodePtr list;
unsigned long consumed;
int isExternal;
int buildTree;
int oldMinNsIndex;
int oldNodelen, oldNodemem;
isExternal = (ent->etype == XML_EXTERNAL_GENERAL_PARSED_ENTITY);
buildTree = (ctxt->node != NULL);
/*
* Recursion check
*/
if (ent->flags & XML_ENT_EXPANDING) {
xmlFatalErr(ctxt, XML_ERR_ENTITY_LOOP, NULL);
xmlHaltParser(ctxt);
goto error;
}
/*
* Load entity
*/
input = xmlNewEntityInputStream(ctxt, ent);
if (input == NULL)
goto error;
/*
* When building a tree, we need to limit the scope of namespace
* declarations, so that entities don't reference xmlNs structs
* from the parent of a reference.
*/
oldMinNsIndex = ctxt->nsdb->minNsIndex;
if (buildTree)
ctxt->nsdb->minNsIndex = ctxt->nsNr;
oldNodelen = ctxt->nodelen;
oldNodemem = ctxt->nodemem;
ctxt->nodelen = 0;
ctxt->nodemem = 0;
/*
* Parse content
*
* This initiates a recursive call chain:
*
* - xmlCtxtParseContent
* - xmlParseContentInternal
* - xmlParseReference
* - xmlCtxtParseEntity
*
* The nesting depth is limited by the maximum number of inputs,
* see xmlPushInput.
*
* It's possible to make this non-recursive (minNsIndex must be
* stored in the input struct) at the expense of code readability.
*/
ent->flags |= XML_ENT_EXPANDING;
list = xmlCtxtParseContent(ctxt, input, isExternal, buildTree);
ent->flags &= ~XML_ENT_EXPANDING;
ctxt->nsdb->minNsIndex = oldMinNsIndex;
ctxt->nodelen = oldNodelen;
ctxt->nodemem = oldNodemem;
/*
* Entity size accounting
*/
consumed = input->consumed;
xmlSaturatedAddSizeT(&consumed, input->end - input->base);
if ((ent->flags & XML_ENT_CHECKED) == 0)
xmlSaturatedAdd(&ent->expandedSize, consumed);
if ((ent->flags & XML_ENT_PARSED) == 0) {
if (isExternal)
xmlSaturatedAdd(&ctxt->sizeentities, consumed);
ent->children = list;
while (list != NULL) {
list->parent = (xmlNodePtr) ent;
if (list->next == NULL)
ent->last = list;
list = list->next;
}
} else {
xmlFreeNodeList(list);
}
xmlFreeInputStream(input);
error:
ent->flags |= XML_ENT_PARSED | XML_ENT_CHECKED;
}
/**
* xmlParseCtxtExternalEntity:
* @ctxt: the existing parsing context
* @URL: the URL for the entity to load
* @ID: the System ID for the entity to load
* @listOut: the return value for the set of parsed nodes
*
* Parse an external general entity within an existing parsing context
* An external general parsed entity is well-formed if it matches the
* production labeled extParsedEnt.
*
* [78] extParsedEnt ::= TextDecl? content
*
* Returns 0 if the entity is well formed, -1 in case of args problem and
* the parser error code otherwise
*/
int
xmlParseCtxtExternalEntity(xmlParserCtxtPtr ctxt, const xmlChar *URL,
const xmlChar *ID, xmlNodePtr *listOut) {
xmlParserInputPtr input;
xmlNodePtr list;
if (listOut != NULL)
*listOut = NULL;
if (ctxt == NULL)
return(XML_ERR_ARGUMENT);
input = xmlLoadResource(ctxt, (char *) URL, (char *) ID,
XML_RESOURCE_GENERAL_ENTITY);
if (input == NULL)
return(ctxt->errNo);
xmlCtxtInitializeLate(ctxt);
list = xmlCtxtParseContent(ctxt, input, /* hasTextDecl */ 1, 1);
if (listOut != NULL)
*listOut = list;
else
xmlFreeNodeList(list);
xmlFreeInputStream(input);
return(ctxt->errNo);
}
#ifdef LIBXML_SAX1_ENABLED
/**
* xmlParseExternalEntity:
* @doc: the document the chunk pertains to
* @sax: the SAX handler block (possibly NULL)
* @user_data: The user data returned on SAX callbacks (possibly NULL)
* @depth: Used for loop detection, use 0
* @URL: the URL for the entity to load
* @ID: the System ID for the entity to load
* @list: the return value for the set of parsed nodes
*
* DEPRECATED: Use xmlParseCtxtExternalEntity.
*
* Parse an external general entity
* An external general parsed entity is well-formed if it matches the
* production labeled extParsedEnt.
*
* [78] extParsedEnt ::= TextDecl? content
*
* Returns 0 if the entity is well formed, -1 in case of args problem and
* the parser error code otherwise
*/
int
xmlParseExternalEntity(xmlDocPtr doc, xmlSAXHandlerPtr sax, void *user_data,
int depth, const xmlChar *URL, const xmlChar *ID, xmlNodePtr *list) {
xmlParserCtxtPtr ctxt;
int ret;
if (list != NULL)
*list = NULL;
if (doc == NULL)
return(XML_ERR_ARGUMENT);
ctxt = xmlNewSAXParserCtxt(sax, user_data);
if (ctxt == NULL)
return(XML_ERR_NO_MEMORY);
ctxt->depth = depth;
ctxt->myDoc = doc;
ret = xmlParseCtxtExternalEntity(ctxt, URL, ID, list);
xmlFreeParserCtxt(ctxt);
return(ret);
}
/**
* xmlParseBalancedChunkMemory:
* @doc: the document the chunk pertains to (must not be NULL)
* @sax: the SAX handler block (possibly NULL)
* @user_data: The user data returned on SAX callbacks (possibly NULL)
* @depth: Used for loop detection, use 0
* @string: the input string in UTF8 or ISO-Latin (zero terminated)
* @lst: the return value for the set of parsed nodes
*
* Parse a well-balanced chunk of an XML document
* called by the parser
* The allowed sequence for the Well Balanced Chunk is the one defined by
* the content production in the XML grammar:
*
* [43] content ::= (element | CharData | Reference | CDSect | PI | Comment)*
*
* Returns 0 if the chunk is well balanced, -1 in case of args problem and
* the parser error code otherwise
*/
int
xmlParseBalancedChunkMemory(xmlDocPtr doc, xmlSAXHandlerPtr sax,
void *user_data, int depth, const xmlChar *string, xmlNodePtr *lst) {
return xmlParseBalancedChunkMemoryRecover( doc, sax, user_data,
depth, string, lst, 0 );
}
#endif /* LIBXML_SAX1_ENABLED */
/**
* xmlParseInNodeContext:
* @node: the context node
* @data: the input string
* @datalen: the input string length in bytes
* @options: a combination of xmlParserOption
* @lst: the return value for the set of parsed nodes
*
* Parse a well-balanced chunk of an XML document
* within the context (DTD, namespaces, etc ...) of the given node.
*
* The allowed sequence for the data is a Well Balanced Chunk defined by
* the content production in the XML grammar:
*
* [43] content ::= (element | CharData | Reference | CDSect | PI | Comment)*
*
* Returns XML_ERR_OK if the chunk is well balanced, and the parser
* error code otherwise
*/
xmlParserErrors
xmlParseInNodeContext(xmlNodePtr node, const char *data, int datalen,
int options, xmlNodePtr *lst) {
xmlParserCtxtPtr ctxt;
xmlDocPtr doc = NULL;
xmlNodePtr fake, cur;
int nsnr = 0;
xmlParserErrors ret = XML_ERR_OK;
/*
* check all input parameters, grab the document
*/
if ((lst == NULL) || (node == NULL) || (data == NULL) || (datalen < 0))
return(XML_ERR_ARGUMENT);
switch (node->type) {
case XML_ELEMENT_NODE:
case XML_ATTRIBUTE_NODE:
case XML_TEXT_NODE:
case XML_CDATA_SECTION_NODE:
case XML_ENTITY_REF_NODE:
case XML_PI_NODE:
case XML_COMMENT_NODE:
case XML_DOCUMENT_NODE:
case XML_HTML_DOCUMENT_NODE:
break;
default:
return(XML_ERR_INTERNAL_ERROR);
}
while ((node != NULL) && (node->type != XML_ELEMENT_NODE) &&
(node->type != XML_DOCUMENT_NODE) &&
(node->type != XML_HTML_DOCUMENT_NODE))
node = node->parent;
if (node == NULL)
return(XML_ERR_INTERNAL_ERROR);
if (node->type == XML_ELEMENT_NODE)
doc = node->doc;
else
doc = (xmlDocPtr) node;
if (doc == NULL)
return(XML_ERR_INTERNAL_ERROR);
/*
* allocate a context and set-up everything not related to the
* node position in the tree
*/
if (doc->type == XML_DOCUMENT_NODE)
ctxt = xmlCreateMemoryParserCtxt((char *) data, datalen);
#ifdef LIBXML_HTML_ENABLED
else if (doc->type == XML_HTML_DOCUMENT_NODE) {
ctxt = htmlCreateMemoryParserCtxt((char *) data, datalen);
/*
* When parsing in context, it makes no sense to add implied
* elements like html/body/etc...
*/
options |= HTML_PARSE_NOIMPLIED;
}
#endif
else
return(XML_ERR_INTERNAL_ERROR);
if (ctxt == NULL)
return(XML_ERR_NO_MEMORY);
/*
* Use input doc's dict if present, else assure XML_PARSE_NODICT is set.
* We need a dictionary for xmlCtxtInitializeLate, so if there's no doc dict
* we must wait until the last moment to free the original one.
*/
if (doc->dict != NULL) {
if (ctxt->dict != NULL)
xmlDictFree(ctxt->dict);
ctxt->dict = doc->dict;
} else {
options |= XML_PARSE_NODICT;
ctxt->dictNames = 0;
}
if (doc->encoding != NULL)
xmlSwitchEncodingName(ctxt, (const char *) doc->encoding);
xmlCtxtUseOptions(ctxt, options);
xmlCtxtInitializeLate(ctxt);
ctxt->myDoc = doc;
/* parsing in context, i.e. as within existing content */
ctxt->input_id = 2;
/*
* TODO: Use xmlCtxtParseContent
*/
fake = xmlNewDocComment(node->doc, NULL);
if (fake == NULL) {
xmlFreeParserCtxt(ctxt);
return(XML_ERR_NO_MEMORY);
}
xmlAddChild(node, fake);
if (node->type == XML_ELEMENT_NODE)
nodePush(ctxt, node);
if ((ctxt->html == 0) && (node->type == XML_ELEMENT_NODE)) {
/*
* initialize the SAX2 namespaces stack
*/
cur = node;
while ((cur != NULL) && (cur->type == XML_ELEMENT_NODE)) {
xmlNsPtr ns = cur->nsDef;
xmlHashedString hprefix, huri;
while (ns != NULL) {
hprefix = xmlDictLookupHashed(ctxt->dict, ns->prefix, -1);
huri = xmlDictLookupHashed(ctxt->dict, ns->href, -1);
if (xmlParserNsPush(ctxt, &hprefix, &huri, ns, 1) > 0)
nsnr++;
ns = ns->next;
}
cur = cur->parent;
}
}
if ((ctxt->validate) || (ctxt->replaceEntities != 0)) {
/*
* ID/IDREF registration will be done in xmlValidateElement below
*/
ctxt->loadsubset |= XML_SKIP_IDS;
}
#ifdef LIBXML_HTML_ENABLED
if (doc->type == XML_HTML_DOCUMENT_NODE)
__htmlParseContent(ctxt);
else
#endif
xmlParseContentInternal(ctxt);
if (ctxt->input->cur < ctxt->input->end)
xmlFatalErr(ctxt, XML_ERR_NOT_WELL_BALANCED, NULL);
xmlParserNsPop(ctxt, nsnr);
if ((ctxt->wellFormed) ||
((ctxt->recovery) && (ctxt->errNo != XML_ERR_NO_MEMORY))) {
ret = XML_ERR_OK;
} else {
ret = (xmlParserErrors) ctxt->errNo;
}
/*
* Return the newly created nodeset after unlinking it from
* the pseudo sibling.
*/
cur = fake->next;
fake->next = NULL;
node->last = fake;
if (cur != NULL) {
cur->prev = NULL;
}
*lst = cur;
while (cur != NULL) {
cur->parent = NULL;
cur = cur->next;
}
xmlUnlinkNode(fake);
xmlFreeNode(fake);
if (ret != XML_ERR_OK) {
xmlFreeNodeList(*lst);
*lst = NULL;
}
if (doc->dict != NULL)
ctxt->dict = NULL;
xmlFreeParserCtxt(ctxt);
return(ret);
}
#ifdef LIBXML_SAX1_ENABLED
/**
* xmlParseBalancedChunkMemoryRecover:
* @doc: the document the chunk pertains to (must not be NULL)
* @sax: the SAX handler block (possibly NULL)
* @user_data: The user data returned on SAX callbacks (possibly NULL)
* @depth: Used for loop detection, use 0
* @string: the input string in UTF8 or ISO-Latin (zero terminated)
* @listOut: the return value for the set of parsed nodes
* @recover: return nodes even if the data is broken (use 0)
*
* Parse a well-balanced chunk of an XML document
*
* The allowed sequence for the Well Balanced Chunk is the one defined by
* the content production in the XML grammar:
*
* [43] content ::= (element | CharData | Reference | CDSect | PI | Comment)*
*
* Returns 0 if the chunk is well balanced, or thehe parser error code
* otherwise.
*
* In case recover is set to 1, the nodelist will not be empty even if
* the parsed chunk is not well balanced, assuming the parsing succeeded to
* some extent.
*/
int
xmlParseBalancedChunkMemoryRecover(xmlDocPtr doc, xmlSAXHandlerPtr sax,
void *user_data, int depth, const xmlChar *string, xmlNodePtr *listOut,
int recover) {
xmlParserCtxtPtr ctxt;
xmlParserInputPtr input;
xmlNodePtr list;
int ret;
if (listOut != NULL)
*listOut = NULL;
if (string == NULL)
return(XML_ERR_ARGUMENT);
ctxt = xmlNewSAXParserCtxt(sax, user_data);
if (ctxt == NULL)
return(XML_ERR_NO_MEMORY);
xmlCtxtInitializeLate(ctxt);
ctxt->depth = depth;
ctxt->myDoc = doc;
if (recover) {
ctxt->options |= XML_PARSE_RECOVER;
ctxt->recovery = 1;
}
input = xmlNewStringInputStream(ctxt, string);
if (input == NULL)
return(ctxt->errNo);
list = xmlCtxtParseContent(ctxt, input, /* hasTextDecl */ 0, 1);
if (listOut != NULL)
*listOut = list;
else
xmlFreeNodeList(list);
ret = ctxt->errNo;
xmlFreeInputStream(input);
xmlFreeParserCtxt(ctxt);
return(ret);
}
/**
* xmlSAXParseEntity:
* @sax: the SAX handler block
* @filename: the filename
*
* DEPRECATED: Don't use.
*
* parse an XML external entity out of context and build a tree.
* It use the given SAX function block to handle the parsing callback.
* If sax is NULL, fallback to the default DOM tree building routines.
*
* [78] extParsedEnt ::= TextDecl? content
*
* This correspond to a "Well Balanced" chunk
*
* Returns the resulting document tree
*/
xmlDocPtr
xmlSAXParseEntity(xmlSAXHandlerPtr sax, const char *filename) {
xmlDocPtr ret;
xmlParserCtxtPtr ctxt;
ctxt = xmlCreateFileParserCtxt(filename);
if (ctxt == NULL) {
return(NULL);
}
if (sax != NULL) {
if (sax->initialized == XML_SAX2_MAGIC) {
*ctxt->sax = *sax;
} else {
memset(ctxt->sax, 0, sizeof(*ctxt->sax));
memcpy(ctxt->sax, sax, sizeof(xmlSAXHandlerV1));
}
ctxt->userData = NULL;
}
xmlParseExtParsedEnt(ctxt);
if (ctxt->wellFormed) {
ret = ctxt->myDoc;
} else {
ret = NULL;
xmlFreeDoc(ctxt->myDoc);
}
xmlFreeParserCtxt(ctxt);
return(ret);
}
/**
* xmlParseEntity:
* @filename: the filename
*
* parse an XML external entity out of context and build a tree.
*
* [78] extParsedEnt ::= TextDecl? content
*
* This correspond to a "Well Balanced" chunk
*
* Returns the resulting document tree
*/
xmlDocPtr
xmlParseEntity(const char *filename) {
return(xmlSAXParseEntity(NULL, filename));
}
#endif /* LIBXML_SAX1_ENABLED */
/**
* xmlCreateEntityParserCtxt:
* @URL: the entity URL
* @ID: the entity PUBLIC ID
* @base: a possible base for the target URI
*
* DEPRECATED: Don't use.
*
* Create a parser context for an external entity
* Automatic support for ZLIB/Compress compressed document is provided
* by default if found at compile-time.
*
* Returns the new parser context or NULL
*/
xmlParserCtxtPtr
xmlCreateEntityParserCtxt(const xmlChar *URL, const xmlChar *ID,
const xmlChar *base) {
xmlParserCtxtPtr ctxt;
xmlParserInputPtr input;
xmlChar *uri = NULL;
ctxt = xmlNewParserCtxt();
if (ctxt == NULL)
return(NULL);
if (base != NULL) {
if (xmlBuildURISafe(URL, base, &uri) < 0)
goto error;
if (uri != NULL)
URL = uri;
}
input = xmlLoadResource(ctxt, (char *) URL, (char *) ID,
XML_RESOURCE_UNKNOWN);
if (input == NULL)
goto error;
if (inputPush(ctxt, input) < 0)
goto error;
xmlFree(uri);
return(ctxt);
error:
xmlFree(uri);
xmlFreeParserCtxt(ctxt);
return(NULL);
}
/************************************************************************
* *
* Front ends when parsing from a file *
* *
************************************************************************/
/**
* xmlCreateURLParserCtxt:
* @filename: the filename or URL
* @options: a combination of xmlParserOption
*
* DEPRECATED: Use xmlNewParserCtxt and xmlCtxtReadFile.
*
* Create a parser context for a file or URL content.
* Automatic support for ZLIB/Compress compressed document is provided
* by default if found at compile-time and for file accesses
*
* Returns the new parser context or NULL
*/
xmlParserCtxtPtr
xmlCreateURLParserCtxt(const char *filename, int options)
{
xmlParserCtxtPtr ctxt;
xmlParserInputPtr input;
ctxt = xmlNewParserCtxt();
if (ctxt == NULL)
return(NULL);
xmlCtxtUseOptions(ctxt, options);
ctxt->linenumbers = 1;
input = xmlLoadResource(ctxt, filename, NULL, XML_RESOURCE_MAIN_DOCUMENT);
if (input == NULL) {
xmlFreeParserCtxt(ctxt);
return(NULL);
}
inputPush(ctxt, input);
return(ctxt);
}
/**
* xmlCreateFileParserCtxt:
* @filename: the filename
*
* DEPRECATED: Use xmlNewParserCtxt and xmlCtxtReadFile.
*
* Create a parser context for a file content.
* Automatic support for ZLIB/Compress compressed document is provided
* by default if found at compile-time.
*
* Returns the new parser context or NULL
*/
xmlParserCtxtPtr
xmlCreateFileParserCtxt(const char *filename)
{
return(xmlCreateURLParserCtxt(filename, 0));
}
#ifdef LIBXML_SAX1_ENABLED
/**
* xmlSAXParseFileWithData:
* @sax: the SAX handler block
* @filename: the filename
* @recovery: work in recovery mode, i.e. tries to read no Well Formed
* documents
* @data: the userdata
*
* DEPRECATED: Use xmlNewSAXParserCtxt and xmlCtxtReadFile.
*
* parse an XML file and build a tree. Automatic support for ZLIB/Compress
* compressed document is provided by default if found at compile-time.
* It use the given SAX function block to handle the parsing callback.
* If sax is NULL, fallback to the default DOM tree building routines.
*
* User data (void *) is stored within the parser context in the
* context's _private member, so it is available nearly everywhere in libxml
*
* Returns the resulting document tree
*/
xmlDocPtr
xmlSAXParseFileWithData(xmlSAXHandlerPtr sax, const char *filename,
int recovery, void *data) {
xmlDocPtr ret;
xmlParserCtxtPtr ctxt;
xmlParserInputPtr input;
ctxt = xmlNewSAXParserCtxt(sax, NULL);
if (ctxt == NULL)
return(NULL);
if (data != NULL)
ctxt->_private = data;
if (recovery) {
ctxt->options |= XML_PARSE_RECOVER;
ctxt->recovery = 1;
}
if ((filename != NULL) && (filename[0] == '-') && (filename[1] == 0))
input = xmlNewInputFd(ctxt, filename, STDIN_FILENO, NULL, 0);
else
input = xmlNewInputURL(ctxt, filename, NULL, NULL, 0);
ret = xmlCtxtParseDocument(ctxt, input);
xmlFreeParserCtxt(ctxt);
return(ret);
}
/**
* xmlSAXParseFile:
* @sax: the SAX handler block
* @filename: the filename
* @recovery: work in recovery mode, i.e. tries to read no Well Formed
* documents
*
* DEPRECATED: Use xmlNewSAXParserCtxt and xmlCtxtReadFile.
*
* parse an XML file and build a tree. Automatic support for ZLIB/Compress
* compressed document is provided by default if found at compile-time.
* It use the given SAX function block to handle the parsing callback.
* If sax is NULL, fallback to the default DOM tree building routines.
*
* Returns the resulting document tree
*/
xmlDocPtr
xmlSAXParseFile(xmlSAXHandlerPtr sax, const char *filename,
int recovery) {
return(xmlSAXParseFileWithData(sax,filename,recovery,NULL));
}
/**
* xmlRecoverDoc:
* @cur: a pointer to an array of xmlChar
*
* DEPRECATED: Use xmlReadDoc with XML_PARSE_RECOVER.
*
* parse an XML in-memory document and build a tree.
* In the case the document is not Well Formed, a attempt to build a
* tree is tried anyway
*
* Returns the resulting document tree or NULL in case of failure
*/
xmlDocPtr
xmlRecoverDoc(const xmlChar *cur) {
return(xmlSAXParseDoc(NULL, cur, 1));
}
/**
* xmlParseFile:
* @filename: the filename
*
* DEPRECATED: Use xmlReadFile.
*
* parse an XML file and build a tree. Automatic support for ZLIB/Compress
* compressed document is provided by default if found at compile-time.
*
* Returns the resulting document tree if the file was wellformed,
* NULL otherwise.
*/
xmlDocPtr
xmlParseFile(const char *filename) {
return(xmlSAXParseFile(NULL, filename, 0));
}
/**
* xmlRecoverFile:
* @filename: the filename
*
* DEPRECATED: Use xmlReadFile with XML_PARSE_RECOVER.
*
* parse an XML file and build a tree. Automatic support for ZLIB/Compress
* compressed document is provided by default if found at compile-time.
* In the case the document is not Well Formed, it attempts to build
* a tree anyway
*
* Returns the resulting document tree or NULL in case of failure
*/
xmlDocPtr
xmlRecoverFile(const char *filename) {
return(xmlSAXParseFile(NULL, filename, 1));
}
/**
* xmlSetupParserForBuffer:
* @ctxt: an XML parser context
* @buffer: a xmlChar * buffer
* @filename: a file name
*
* DEPRECATED: Don't use.
*
* Setup the parser context to parse a new buffer; Clears any prior
* contents from the parser context. The buffer parameter must not be
* NULL, but the filename parameter can be
*/
void
xmlSetupParserForBuffer(xmlParserCtxtPtr ctxt, const xmlChar* buffer,
const char* filename)
{
xmlParserInputPtr input;
if ((ctxt == NULL) || (buffer == NULL))
return;
xmlClearParserCtxt(ctxt);
input = xmlNewInputString(ctxt, filename, (const char *) buffer, NULL, 0);
if (input == NULL)
return;
inputPush(ctxt, input);
}
/**
* xmlSAXUserParseFile:
* @sax: a SAX handler
* @user_data: The user data returned on SAX callbacks
* @filename: a file name
*
* DEPRECATED: Use xmlNewSAXParserCtxt and xmlCtxtReadFile.
*
* parse an XML file and call the given SAX handler routines.
* Automatic support for ZLIB/Compress compressed document is provided
*
* Returns 0 in case of success or a error number otherwise
*/
int
xmlSAXUserParseFile(xmlSAXHandlerPtr sax, void *user_data,
const char *filename) {
int ret = 0;
xmlParserCtxtPtr ctxt;
ctxt = xmlCreateFileParserCtxt(filename);
if (ctxt == NULL) return -1;
if (sax != NULL) {
if (sax->initialized == XML_SAX2_MAGIC) {
*ctxt->sax = *sax;
} else {
memset(ctxt->sax, 0, sizeof(*ctxt->sax));
memcpy(ctxt->sax, sax, sizeof(xmlSAXHandlerV1));
}
ctxt->userData = user_data;
}
xmlParseDocument(ctxt);
if (ctxt->wellFormed)
ret = 0;
else {
if (ctxt->errNo != 0)
ret = ctxt->errNo;
else
ret = -1;
}
if (ctxt->myDoc != NULL) {
xmlFreeDoc(ctxt->myDoc);
ctxt->myDoc = NULL;
}
xmlFreeParserCtxt(ctxt);
return ret;
}
#endif /* LIBXML_SAX1_ENABLED */
/************************************************************************
* *
* Front ends when parsing from memory *
* *
************************************************************************/
/**
* xmlCreateMemoryParserCtxt:
* @buffer: a pointer to a char array
* @size: the size of the array
*
* Create a parser context for an XML in-memory document. The input buffer
* must not contain a terminating null byte.
*
* Returns the new parser context or NULL
*/
xmlParserCtxtPtr
xmlCreateMemoryParserCtxt(const char *buffer, int size) {
xmlParserCtxtPtr ctxt;
xmlParserInputPtr input;
if (size < 0)
return(NULL);
ctxt = xmlNewParserCtxt();
if (ctxt == NULL)
return(NULL);
input = xmlNewInputMemory(ctxt, NULL, buffer, size, NULL, 0);
if (input == NULL) {
xmlFreeParserCtxt(ctxt);
return(NULL);
}
inputPush(ctxt, input);
return(ctxt);
}
#ifdef LIBXML_SAX1_ENABLED
/**
* xmlSAXParseMemoryWithData:
* @sax: the SAX handler block
* @buffer: an pointer to a char array
* @size: the size of the array
* @recovery: work in recovery mode, i.e. tries to read no Well Formed
* documents
* @data: the userdata
*
* DEPRECATED: Use xmlNewSAXParserCtxt and xmlCtxtReadMemory.
*
* parse an XML in-memory block and use the given SAX function block
* to handle the parsing callback. If sax is NULL, fallback to the default
* DOM tree building routines.
*
* User data (void *) is stored within the parser context in the
* context's _private member, so it is available nearly everywhere in libxml
*
* Returns the resulting document tree
*/
xmlDocPtr
xmlSAXParseMemoryWithData(xmlSAXHandlerPtr sax, const char *buffer,
int size, int recovery, void *data) {
xmlDocPtr ret;
xmlParserCtxtPtr ctxt;
xmlParserInputPtr input;
if (size < 0)
return(NULL);
ctxt = xmlNewSAXParserCtxt(sax, NULL);
if (ctxt == NULL)
return(NULL);
if (data != NULL)
ctxt->_private=data;
if (recovery) {
ctxt->options |= XML_PARSE_RECOVER;
ctxt->recovery = 1;
}
input = xmlNewInputMemory(ctxt, NULL, buffer, size, NULL,
XML_INPUT_BUF_STATIC);
ret = xmlCtxtParseDocument(ctxt, input);
xmlFreeParserCtxt(ctxt);
return(ret);
}
/**
* xmlSAXParseMemory:
* @sax: the SAX handler block
* @buffer: an pointer to a char array
* @size: the size of the array
* @recovery: work in recovery mode, i.e. tries to read not Well Formed
* documents
*
* DEPRECATED: Use xmlNewSAXParserCtxt and xmlCtxtReadMemory.
*
* parse an XML in-memory block and use the given SAX function block
* to handle the parsing callback. If sax is NULL, fallback to the default
* DOM tree building routines.
*
* Returns the resulting document tree
*/
xmlDocPtr
xmlSAXParseMemory(xmlSAXHandlerPtr sax, const char *buffer,
int size, int recovery) {
return xmlSAXParseMemoryWithData(sax, buffer, size, recovery, NULL);
}
/**
* xmlParseMemory:
* @buffer: an pointer to a char array
* @size: the size of the array
*
* DEPRECATED: Use xmlReadMemory.
*
* parse an XML in-memory block and build a tree.
*
* Returns the resulting document tree
*/
xmlDocPtr xmlParseMemory(const char *buffer, int size) {
return(xmlSAXParseMemory(NULL, buffer, size, 0));
}
/**
* xmlRecoverMemory:
* @buffer: an pointer to a char array
* @size: the size of the array
*
* DEPRECATED: Use xmlReadMemory with XML_PARSE_RECOVER.
*
* parse an XML in-memory block and build a tree.
* In the case the document is not Well Formed, an attempt to
* build a tree is tried anyway
*
* Returns the resulting document tree or NULL in case of error
*/
xmlDocPtr xmlRecoverMemory(const char *buffer, int size) {
return(xmlSAXParseMemory(NULL, buffer, size, 1));
}
/**
* xmlSAXUserParseMemory:
* @sax: a SAX handler
* @user_data: The user data returned on SAX callbacks
* @buffer: an in-memory XML document input
* @size: the length of the XML document in bytes
*
* DEPRECATED: Use xmlNewSAXParserCtxt and xmlCtxtReadMemory.
*
* parse an XML in-memory buffer and call the given SAX handler routines.
*
* Returns 0 in case of success or a error number otherwise
*/
int xmlSAXUserParseMemory(xmlSAXHandlerPtr sax, void *user_data,
const char *buffer, int size) {
int ret = 0;
xmlParserCtxtPtr ctxt;
ctxt = xmlCreateMemoryParserCtxt(buffer, size);
if (ctxt == NULL) return -1;
if (sax != NULL) {
if (sax->initialized == XML_SAX2_MAGIC) {
*ctxt->sax = *sax;
} else {
memset(ctxt->sax, 0, sizeof(*ctxt->sax));
memcpy(ctxt->sax, sax, sizeof(xmlSAXHandlerV1));
}
ctxt->userData = user_data;
}
xmlParseDocument(ctxt);
if (ctxt->wellFormed)
ret = 0;
else {
if (ctxt->errNo != 0)
ret = ctxt->errNo;
else
ret = -1;
}
if (ctxt->myDoc != NULL) {
xmlFreeDoc(ctxt->myDoc);
ctxt->myDoc = NULL;
}
xmlFreeParserCtxt(ctxt);
return ret;
}
#endif /* LIBXML_SAX1_ENABLED */
/**
* xmlCreateDocParserCtxt:
* @str: a pointer to an array of xmlChar
*
* Creates a parser context for an XML in-memory document.
*
* Returns the new parser context or NULL
*/
xmlParserCtxtPtr
xmlCreateDocParserCtxt(const xmlChar *str) {
xmlParserCtxtPtr ctxt;
xmlParserInputPtr input;
ctxt = xmlNewParserCtxt();
if (ctxt == NULL)
return(NULL);
input = xmlNewInputString(ctxt, NULL, (const char *) str, NULL, 0);
if (input == NULL) {
xmlFreeParserCtxt(ctxt);
return(NULL);
}
inputPush(ctxt, input);
return(ctxt);
}
#ifdef LIBXML_SAX1_ENABLED
/**
* xmlSAXParseDoc:
* @sax: the SAX handler block
* @cur: a pointer to an array of xmlChar
* @recovery: work in recovery mode, i.e. tries to read no Well Formed
* documents
*
* DEPRECATED: Use xmlNewSAXParserCtxt and xmlCtxtReadDoc.
*
* parse an XML in-memory document and build a tree.
* It use the given SAX function block to handle the parsing callback.
* If sax is NULL, fallback to the default DOM tree building routines.
*
* Returns the resulting document tree
*/
xmlDocPtr
xmlSAXParseDoc(xmlSAXHandlerPtr sax, const xmlChar *cur, int recovery) {
xmlDocPtr ret;
xmlParserCtxtPtr ctxt;
xmlSAXHandlerPtr oldsax = NULL;
if (cur == NULL) return(NULL);
ctxt = xmlCreateDocParserCtxt(cur);
if (ctxt == NULL) return(NULL);
if (sax != NULL) {
oldsax = ctxt->sax;
ctxt->sax = sax;
ctxt->userData = NULL;
}
xmlParseDocument(ctxt);
if ((ctxt->wellFormed) || recovery) ret = ctxt->myDoc;
else {
ret = NULL;
xmlFreeDoc(ctxt->myDoc);
ctxt->myDoc = NULL;
}
if (sax != NULL)
ctxt->sax = oldsax;
xmlFreeParserCtxt(ctxt);
return(ret);
}
/**
* xmlParseDoc:
* @cur: a pointer to an array of xmlChar
*
* DEPRECATED: Use xmlReadDoc.
*
* parse an XML in-memory document and build a tree.
*
* Returns the resulting document tree
*/
xmlDocPtr
xmlParseDoc(const xmlChar *cur) {
return(xmlSAXParseDoc(NULL, cur, 0));
}
#endif /* LIBXML_SAX1_ENABLED */
/************************************************************************
* *
* New set (2.6.0) of simpler and more flexible APIs *
* *
************************************************************************/
/**
* DICT_FREE:
* @str: a string
*
* Free a string if it is not owned by the "dict" dictionary in the
* current scope
*/
#define DICT_FREE(str) \
if ((str) && ((!dict) || \
(xmlDictOwns(dict, (const xmlChar *)(str)) == 0))) \
xmlFree((char *)(str));
/**
* xmlCtxtReset:
* @ctxt: an XML parser context
*
* Reset a parser context
*/
void
xmlCtxtReset(xmlParserCtxtPtr ctxt)
{
xmlParserInputPtr input;
xmlDictPtr dict;
if (ctxt == NULL)
return;
dict = ctxt->dict;
while ((input = inputPop(ctxt)) != NULL) { /* Non consuming */
xmlFreeInputStream(input);
}
ctxt->inputNr = 0;
ctxt->input = NULL;
ctxt->spaceNr = 0;
if (ctxt->spaceTab != NULL) {
ctxt->spaceTab[0] = -1;
ctxt->space = &ctxt->spaceTab[0];
} else {
ctxt->space = NULL;
}
ctxt->nodeNr = 0;
ctxt->node = NULL;
ctxt->nameNr = 0;
ctxt->name = NULL;
ctxt->nsNr = 0;
xmlParserNsReset(ctxt->nsdb);
DICT_FREE(ctxt->version);
ctxt->version = NULL;
DICT_FREE(ctxt->encoding);
ctxt->encoding = NULL;
DICT_FREE(ctxt->extSubURI);
ctxt->extSubURI = NULL;
DICT_FREE(ctxt->extSubSystem);
ctxt->extSubSystem = NULL;
if (ctxt->myDoc != NULL)
xmlFreeDoc(ctxt->myDoc);
ctxt->myDoc = NULL;
ctxt->standalone = -1;
ctxt->hasExternalSubset = 0;
ctxt->hasPErefs = 0;
ctxt->html = 0;
ctxt->instate = XML_PARSER_START;
ctxt->wellFormed = 1;
ctxt->nsWellFormed = 1;
ctxt->disableSAX = 0;
ctxt->valid = 1;
#if 0
ctxt->vctxt.userData = ctxt;
ctxt->vctxt.error = xmlParserValidityError;
ctxt->vctxt.warning = xmlParserValidityWarning;
#endif
ctxt->record_info = 0;
ctxt->checkIndex = 0;
ctxt->endCheckState = 0;
ctxt->inSubset = 0;
ctxt->errNo = XML_ERR_OK;
ctxt->depth = 0;
ctxt->catalogs = NULL;
ctxt->sizeentities = 0;
ctxt->sizeentcopy = 0;
xmlInitNodeInfoSeq(&ctxt->node_seq);
if (ctxt->attsDefault != NULL) {
xmlHashFree(ctxt->attsDefault, xmlHashDefaultDeallocator);
ctxt->attsDefault = NULL;
}
if (ctxt->attsSpecial != NULL) {
xmlHashFree(ctxt->attsSpecial, NULL);
ctxt->attsSpecial = NULL;
}
#ifdef LIBXML_CATALOG_ENABLED
if (ctxt->catalogs != NULL)
xmlCatalogFreeLocal(ctxt->catalogs);
#endif
ctxt->nbErrors = 0;
ctxt->nbWarnings = 0;
if (ctxt->lastError.code != XML_ERR_OK)
xmlResetError(&ctxt->lastError);
}
/**
* xmlCtxtResetPush:
* @ctxt: an XML parser context
* @chunk: a pointer to an array of chars
* @size: number of chars in the array
* @filename: an optional file name or URI
* @encoding: the document encoding, or NULL
*
* Reset a push parser context
*
* Returns 0 in case of success and 1 in case of error
*/
int
xmlCtxtResetPush(xmlParserCtxtPtr ctxt, const char *chunk,
int size, const char *filename, const char *encoding)
{
xmlParserInputPtr input;
if (ctxt == NULL)
return(1);
xmlCtxtReset(ctxt);
input = xmlInputCreatePush(filename, chunk, size);
if (input == NULL)
return(1);
inputPush(ctxt, input);
if (encoding != NULL)
xmlSwitchEncodingName(ctxt, encoding);
return(0);
}
static int
xmlCtxtSetOptionsInternal(xmlParserCtxtPtr ctxt, int options, int keepMask)
{
int allMask;
if (ctxt == NULL)
return(-1);
/*
* XInclude options aren't handled by the parser.
*
* XML_PARSE_XINCLUDE
* XML_PARSE_NOXINCNODE
* XML_PARSE_NOBASEFIX
*/
allMask = XML_PARSE_RECOVER |
XML_PARSE_NOENT |
XML_PARSE_DTDLOAD |
XML_PARSE_DTDATTR |
XML_PARSE_DTDVALID |
XML_PARSE_NOERROR |
XML_PARSE_NOWARNING |
XML_PARSE_PEDANTIC |
XML_PARSE_NOBLANKS |
#ifdef LIBXML_SAX1_ENABLED
XML_PARSE_SAX1 |
#endif
XML_PARSE_NONET |
XML_PARSE_NODICT |
XML_PARSE_NSCLEAN |
XML_PARSE_NOCDATA |
XML_PARSE_COMPACT |
XML_PARSE_OLD10 |
XML_PARSE_HUGE |
XML_PARSE_OLDSAX |
XML_PARSE_IGNORE_ENC |
XML_PARSE_BIG_LINES |
XML_PARSE_NO_XXE;
ctxt->options = (ctxt->options & keepMask) | (options & allMask);
/*
* For some options, struct members are historically the source
* of truth. The values are initalized from global variables and
* old code could also modify them directly. Several older API
* functions that don't take an options argument rely on these
* deprecated mechanisms.
*
* Once public access to struct members and the globals are
* disabled, we can use the options bitmask as source of
* truth, making all these struct members obsolete.
*
* The XML_DETECT_IDS flags is misnamed. It simply enables
* loading of the external subset.
*/
ctxt->recovery = (options & XML_PARSE_RECOVER) ? 1 : 0;
ctxt->replaceEntities = (options & XML_PARSE_NOENT) ? 1 : 0;
ctxt->loadsubset = (options & XML_PARSE_DTDLOAD) ? XML_DETECT_IDS : 0;
ctxt->loadsubset |= (options & XML_PARSE_DTDATTR) ? XML_COMPLETE_ATTRS : 0;
ctxt->validate = (options & XML_PARSE_DTDVALID) ? 1 : 0;
ctxt->pedantic = (options & XML_PARSE_PEDANTIC) ? 1 : 0;
ctxt->keepBlanks = (options & XML_PARSE_NOBLANKS) ? 0 : 1;
ctxt->dictNames = (options & XML_PARSE_NODICT) ? 0 : 1;
/*
* Changing SAX callbacks is a bad idea. This should be fixed.
*/
if (options & XML_PARSE_NOBLANKS) {
ctxt->sax->ignorableWhitespace = xmlSAX2IgnorableWhitespace;
}
if (options & XML_PARSE_NOCDATA) {
ctxt->sax->cdataBlock = NULL;
}
if (options & XML_PARSE_HUGE) {
if (ctxt->dict != NULL)
xmlDictSetLimit(ctxt->dict, 0);
}
ctxt->linenumbers = 1;
return(options & ~allMask);
}
/**
* xmlCtxtSetOptions:
* @ctxt: an XML parser context
* @options: a bitmask of xmlParserOption values
*
* Applies the options to the parser context. Unset options are
* cleared.
*
* Available since 2.13.0. With older versions, you can use
* xmlCtxtUseOptions.
*
* XML_PARSE_RECOVER
*
* Enable "recovery" mode which allows non-wellformed documents.
* How this mode behaves exactly is unspecified and may change
* without further notice. Use of this feature is DISCOURAGED.
*
* XML_PARSE_NOENT
*
* Despite the confusing name, this option enables substitution
* of entities. The resulting tree won't contain any entity
* reference nodes.
*
* This option also enables loading of external entities (both
* general and parameter entities) which is dangerous. If you
* process untrusted data, it's recommended to set the
* XML_PARSE_NO_XXE option to disable loading of external
* entities.
*
* XML_PARSE_DTDLOAD
*
* Enables loading of an external DTD and the loading and
* substitution of external parameter entities. Has no effect
* if XML_PARSE_NO_XXE is set.
*
* XML_PARSE_DTDATTR
*
* Adds default attributes from the DTD to the result document.
*
* Implies XML_PARSE_DTDLOAD, but loading of external content
* can be disabled with XML_PARSE_NO_XXE.
*
* XML_PARSE_DTDVALID
*
* This option enables DTD validation which requires to load
* external DTDs and external entities (both general and
* parameter entities) unless XML_PARSE_NO_XXE was set.
*
* XML_PARSE_NO_XXE
*
* Disables loading of external DTDs or entities.
*
* XML_PARSE_NOERROR
*
* Disable error and warning reports to the error handlers.
* Errors are still accessible with xmlCtxtGetLastError.
*
* XML_PARSE_NOWARNING
*
* Disable warning reports.
*
* XML_PARSE_PEDANTIC
*
* Enable some pedantic warnings.
*
* XML_PARSE_NOBLANKS
*
* Remove some text nodes containing only whitespace from the
* result document. Which nodes are removed depends on DTD
* element declarations or a conservative heuristic. The
* reindenting feature of the serialization code relies on this
* option to be set when parsing. Use of this option is
* DISCOURAGED.
*
* XML_PARSE_SAX1
*
* Always invoke the deprecated SAX1 startElement and endElement
* handlers. This option is DEPRECATED.
*
* XML_PARSE_NONET
*
* Disable network access with the builtin HTTP client.
*
* XML_PARSE_NODICT
*
* Create a document without interned strings, making all
* strings separate memory allocations.
*
* XML_PARSE_NSCLEAN
*
* Remove redundant namespace declarations from the result
* document.
*
* XML_PARSE_NOCDATA
*
* Output normal text nodes instead of CDATA nodes.
*
* XML_PARSE_COMPACT
*
* Store small strings directly in the node struct to save
* memory.
*
* XML_PARSE_OLD10
*
* Use old Name productions from before XML 1.0 Fifth Edition.
* This options is DEPRECATED.
*
* XML_PARSE_HUGE
*
* Relax some internal limits.
*
* Maximum size of text nodes, tags, comments, processing instructions,
* CDATA sections, entity values
*
* normal: 10M
* huge: 1B
*
* Maximum size of names, system literals, pubid literals
*
* normal: 50K
* huge: 10M
*
* Maximum nesting depth of elements
*
* normal: 256
* huge: 2048
*
* Maximum nesting depth of entities
*
* normal: 20
* huge: 40
*
* XML_PARSE_OLDSAX
*
* Enable an unspecified legacy mode for SAX parsers. This
* option is DEPRECATED.
*
* XML_PARSE_IGNORE_ENC
*
* Ignore the encoding in the XML declaration. This option is
* mostly unneeded these days. The only effect is to enforce
* UTF-8 decoding of ASCII-like data.
*
* XML_PARSE_BIG_LINES
*
* Enable reporting of line numbers larger than 65535.
*
* XML_PARSE_NO_UNZIP
*
* Disables input decompression. Setting this option is recommended
* to avoid zip bombs.
*
* Available since 2.14.0.
*
* Returns 0 in case of success, the set of unknown or unimplemented options
* in case of error.
*/
int
xmlCtxtSetOptions(xmlParserCtxtPtr ctxt, int options)
{
return(xmlCtxtSetOptionsInternal(ctxt, options, 0));
}
/**
* xmlCtxtGetOptions:
* @ctxt: an XML parser context
*
* Get the current options of the parser context.
*
* Available since 2.14.0.
*
* Returns the current options set in the parser context, or -1 if ctxt is NULL.
*/
int
xmlCtxtGetOptions(xmlParserCtxtPtr ctxt)
{
if (ctxt == NULL)
return(-1);
return(ctxt->options);
}
/**
* xmlCtxtUseOptions:
* @ctxt: an XML parser context
* @options: a combination of xmlParserOption
*
* DEPRECATED: Use xmlCtxtSetOptions.
*
* Applies the options to the parser context. The following options
* are never cleared and can only be enabled:
*
* XML_PARSE_NOERROR
* XML_PARSE_NOWARNING
* XML_PARSE_NONET
* XML_PARSE_NSCLEAN
* XML_PARSE_NOCDATA
* XML_PARSE_COMPACT
* XML_PARSE_OLD10
* XML_PARSE_HUGE
* XML_PARSE_OLDSAX
* XML_PARSE_IGNORE_ENC
* XML_PARSE_BIG_LINES
*
* Returns 0 in case of success, the set of unknown or unimplemented options
* in case of error.
*/
int
xmlCtxtUseOptions(xmlParserCtxtPtr ctxt, int options)
{
int keepMask;
/*
* For historic reasons, some options can only be enabled.
*/
keepMask = XML_PARSE_NOERROR |
XML_PARSE_NOWARNING |
XML_PARSE_NONET |
XML_PARSE_NSCLEAN |
XML_PARSE_NOCDATA |
XML_PARSE_COMPACT |
XML_PARSE_OLD10 |
XML_PARSE_HUGE |
XML_PARSE_OLDSAX |
XML_PARSE_IGNORE_ENC |
XML_PARSE_BIG_LINES;
return(xmlCtxtSetOptionsInternal(ctxt, options, keepMask));
}
/**
* xmlCtxtSetMaxAmplification:
* @ctxt: an XML parser context
* @maxAmpl: maximum amplification factor
*
* To protect against exponential entity expansion ("billion laughs"), the
* size of serialized output is (roughly) limited to the input size
* multiplied by this factor. The default value is 5.
*
* When working with documents making heavy use of entity expansion, it can
* be necessary to increase the value. For security reasons, this should only
* be considered when processing trusted input.
*/
void
xmlCtxtSetMaxAmplification(xmlParserCtxtPtr ctxt, unsigned maxAmpl)
{
ctxt->maxAmpl = maxAmpl;
}
/**
* xmlCtxtParseDocument:
* @ctxt: an XML parser context
* @input: parser input
*
* Parse an XML document and return the resulting document tree.
* Takes ownership of the input object.
*
* Available since 2.13.0.
*
* Returns the resulting document tree or NULL
*/
xmlDocPtr
xmlCtxtParseDocument(xmlParserCtxtPtr ctxt, xmlParserInputPtr input)
{
xmlDocPtr ret = NULL;
if ((ctxt == NULL) || (input == NULL))
return(NULL);
/* assert(ctxt->inputNr == 0); */
while (ctxt->inputNr > 0)
xmlFreeInputStream(inputPop(ctxt));
if (inputPush(ctxt, input) < 0) {
xmlFreeInputStream(input);
return(NULL);
}
xmlParseDocument(ctxt);
if ((ctxt->wellFormed) ||
((ctxt->recovery) && (ctxt->errNo != XML_ERR_NO_MEMORY))) {
ret = ctxt->myDoc;
} else {
if (ctxt->errNo == XML_ERR_OK)
xmlFatalErrMsg(ctxt, XML_ERR_INTERNAL_ERROR, "unknown error\n");
ret = NULL;
xmlFreeDoc(ctxt->myDoc);
}
ctxt->myDoc = NULL;
/* assert(ctxt->inputNr == 1); */
while (ctxt->inputNr > 0)
xmlFreeInputStream(inputPop(ctxt));
return(ret);
}
/**
* xmlReadDoc:
* @cur: a pointer to a zero terminated string
* @URL: base URL (optional)
* @encoding: the document encoding (optional)
* @options: a combination of xmlParserOption
*
* Convenience function to parse an XML document from a
* zero-terminated string.
*
* See xmlCtxtReadDoc for details.
*
* Returns the resulting document tree
*/
xmlDocPtr
xmlReadDoc(const xmlChar *cur, const char *URL, const char *encoding,
int options)
{
xmlParserCtxtPtr ctxt;
xmlParserInputPtr input;
xmlDocPtr doc;
ctxt = xmlNewParserCtxt();
if (ctxt == NULL)
return(NULL);
xmlCtxtUseOptions(ctxt, options);
input = xmlNewInputString(ctxt, URL, (const char *) cur, encoding,
XML_INPUT_BUF_STATIC);
doc = xmlCtxtParseDocument(ctxt, input);
xmlFreeParserCtxt(ctxt);
return(doc);
}
/**
* xmlReadFile:
* @filename: a file or URL
* @encoding: the document encoding (optional)
* @options: a combination of xmlParserOption
*
* Convenience function to parse an XML file from the filesystem,
* the network or a global user-define resource loader.
*
* See xmlCtxtReadFile for details.
*
* Returns the resulting document tree
*/
xmlDocPtr
xmlReadFile(const char *filename, const char *encoding, int options)
{
xmlParserCtxtPtr ctxt;
xmlParserInputPtr input;
xmlDocPtr doc;
ctxt = xmlNewParserCtxt();
if (ctxt == NULL)
return(NULL);
xmlCtxtUseOptions(ctxt, options);
/*
* Backward compatibility for users of command line utilities like
* xmlstarlet expecting "-" to mean stdin. This is dangerous and
* should be removed at some point.
*/
if ((filename != NULL) && (filename[0] == '-') && (filename[1] == 0))
input = xmlNewInputFd(ctxt, filename, STDIN_FILENO, encoding, 0);
else
input = xmlNewInputURL(ctxt, filename, NULL, encoding, 0);
doc = xmlCtxtParseDocument(ctxt, input);
xmlFreeParserCtxt(ctxt);
return(doc);
}
/**
* xmlReadMemory:
* @buffer: a pointer to a char array
* @size: the size of the array
* @url: base URL (optional)
* @encoding: the document encoding (optional)
* @options: a combination of xmlParserOption
*
* Parse an XML in-memory document and build a tree. The input buffer must
* not contain a terminating null byte.
*
* See xmlCtxtReadMemory for details.
*
* Returns the resulting document tree
*/
xmlDocPtr
xmlReadMemory(const char *buffer, int size, const char *url,
const char *encoding, int options)
{
xmlParserCtxtPtr ctxt;
xmlParserInputPtr input;
xmlDocPtr doc;
if (size < 0)
return(NULL);
ctxt = xmlNewParserCtxt();
if (ctxt == NULL)
return(NULL);
xmlCtxtUseOptions(ctxt, options);
input = xmlNewInputMemory(ctxt, url, buffer, size, encoding,
XML_INPUT_BUF_STATIC);
doc = xmlCtxtParseDocument(ctxt, input);
xmlFreeParserCtxt(ctxt);
return(doc);
}
/**
* xmlReadFd:
* @fd: an open file descriptor
* @URL: base URL (optional)
* @encoding: the document encoding (optional)
* @options: a combination of xmlParserOption
*
* Parse an XML from a file descriptor and build a tree.
*
* See xmlCtxtReadFd for details.
*
* NOTE that the file descriptor will not be closed when the
* context is freed or reset.
*
* Returns the resulting document tree
*/
xmlDocPtr
xmlReadFd(int fd, const char *URL, const char *encoding, int options)
{
xmlParserCtxtPtr ctxt;
xmlParserInputPtr input;
xmlDocPtr doc;
ctxt = xmlNewParserCtxt();
if (ctxt == NULL)
return(NULL);
xmlCtxtUseOptions(ctxt, options);
input = xmlNewInputFd(ctxt, URL, fd, encoding, 0);
doc = xmlCtxtParseDocument(ctxt, input);
xmlFreeParserCtxt(ctxt);
return(doc);
}
/**
* xmlReadIO:
* @ioread: an I/O read function
* @ioclose: an I/O close function (optional)
* @ioctx: an I/O handler
* @URL: base URL (optional)
* @encoding: the document encoding (optional)
* @options: a combination of xmlParserOption
*
* Parse an XML document from I/O functions and context and build a tree.
*
* See xmlCtxtReadIO for details.
*
* Returns the resulting document tree
*/
xmlDocPtr
xmlReadIO(xmlInputReadCallback ioread, xmlInputCloseCallback ioclose,
void *ioctx, const char *URL, const char *encoding, int options)
{
xmlParserCtxtPtr ctxt;
xmlParserInputPtr input;
xmlDocPtr doc;
ctxt = xmlNewParserCtxt();
if (ctxt == NULL)
return(NULL);
xmlCtxtUseOptions(ctxt, options);
input = xmlNewInputIO(ctxt, URL, ioread, ioclose, ioctx, encoding, 0);
doc = xmlCtxtParseDocument(ctxt, input);
xmlFreeParserCtxt(ctxt);
return(doc);
}
/**
* xmlCtxtReadDoc:
* @ctxt: an XML parser context
* @str: a pointer to a zero terminated string
* @URL: base URL (optional)
* @encoding: the document encoding (optional)
* @options: a combination of xmlParserOption
*
* Parse an XML in-memory document and build a tree.
*
* @URL is used as base to resolve external entities and for error
* reporting.
*
* See xmlCtxtUseOptions for details.
*
* Returns the resulting document tree
*/
xmlDocPtr
xmlCtxtReadDoc(xmlParserCtxtPtr ctxt, const xmlChar *str,
const char *URL, const char *encoding, int options)
{
xmlParserInputPtr input;
if (ctxt == NULL)
return(NULL);
xmlCtxtReset(ctxt);
xmlCtxtUseOptions(ctxt, options);
input = xmlNewInputString(ctxt, URL, (const char *) str, encoding,
XML_INPUT_BUF_STATIC);
return(xmlCtxtParseDocument(ctxt, input));
}
/**
* xmlCtxtReadFile:
* @ctxt: an XML parser context
* @filename: a file or URL
* @encoding: the document encoding (optional)
* @options: a combination of xmlParserOption
*
* Parse an XML file from the filesystem, the network or a user-defined
* resource loader.
*
* Returns the resulting document tree
*/
xmlDocPtr
xmlCtxtReadFile(xmlParserCtxtPtr ctxt, const char *filename,
const char *encoding, int options)
{
xmlParserInputPtr input;
if (ctxt == NULL)
return(NULL);
xmlCtxtReset(ctxt);
xmlCtxtUseOptions(ctxt, options);
input = xmlNewInputURL(ctxt, filename, NULL, encoding, 0);
return(xmlCtxtParseDocument(ctxt, input));
}
/**
* xmlCtxtReadMemory:
* @ctxt: an XML parser context
* @buffer: a pointer to a char array
* @size: the size of the array
* @URL: base URL (optional)
* @encoding: the document encoding (optional)
* @options: a combination of xmlParserOption
*
* Parse an XML in-memory document and build a tree. The input buffer must
* not contain a terminating null byte.
*
* @URL is used as base to resolve external entities and for error
* reporting.
*
* See xmlCtxtUseOptions for details.
*
* Returns the resulting document tree
*/
xmlDocPtr
xmlCtxtReadMemory(xmlParserCtxtPtr ctxt, const char *buffer, int size,
const char *URL, const char *encoding, int options)
{
xmlParserInputPtr input;
if ((ctxt == NULL) || (size < 0))
return(NULL);
xmlCtxtReset(ctxt);
xmlCtxtUseOptions(ctxt, options);
input = xmlNewInputMemory(ctxt, URL, buffer, size, encoding,
XML_INPUT_BUF_STATIC);
return(xmlCtxtParseDocument(ctxt, input));
}
/**
* xmlCtxtReadFd:
* @ctxt: an XML parser context
* @fd: an open file descriptor
* @URL: base URL (optional)
* @encoding: the document encoding (optional)
* @options: a combination of xmlParserOption
*
* Parse an XML document from a file descriptor and build a tree.
*
* NOTE that the file descriptor will not be closed when the
* context is freed or reset.
*
* @URL is used as base to resolve external entities and for error
* reporting.
*
* See xmlCtxtUseOptions for details.
*
* Returns the resulting document tree
*/
xmlDocPtr
xmlCtxtReadFd(xmlParserCtxtPtr ctxt, int fd,
const char *URL, const char *encoding, int options)
{
xmlParserInputPtr input;
if (ctxt == NULL)
return(NULL);
xmlCtxtReset(ctxt);
xmlCtxtUseOptions(ctxt, options);
input = xmlNewInputFd(ctxt, URL, fd, encoding, 0);
return(xmlCtxtParseDocument(ctxt, input));
}
/**
* xmlCtxtReadIO:
* @ctxt: an XML parser context
* @ioread: an I/O read function
* @ioclose: an I/O close function
* @ioctx: an I/O handler
* @URL: the base URL to use for the document
* @encoding: the document encoding, or NULL
* @options: a combination of xmlParserOption
*
* parse an XML document from I/O functions and source and build a tree.
* This reuses the existing @ctxt parser context
*
* @URL is used as base to resolve external entities and for error
* reporting.
*
* See xmlCtxtUseOptions for details.
*
* Returns the resulting document tree
*/
xmlDocPtr
xmlCtxtReadIO(xmlParserCtxtPtr ctxt, xmlInputReadCallback ioread,
xmlInputCloseCallback ioclose, void *ioctx,
const char *URL,
const char *encoding, int options)
{
xmlParserInputPtr input;
if (ctxt == NULL)
return(NULL);
xmlCtxtReset(ctxt);
xmlCtxtUseOptions(ctxt, options);
input = xmlNewInputIO(ctxt, URL, ioread, ioclose, ioctx, encoding, 0);
return(xmlCtxtParseDocument(ctxt, input));
}
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