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libxml2/xmlreader.c
Nick Wellnhofer e75e878e02 doc: Update and fix documentation
2024-05-20 14:23:39 +02:00

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/*
* xmlreader.c: implements the xmlTextReader streaming node API
*
* NOTE:
* XmlTextReader.Normalization Property won't be supported, since
* it makes the parser non compliant to the XML recommendation
*
* See Copyright for the status of this software.
*
* daniel@veillard.com
*/
/*
* TODOs:
* - XML Schemas validation
*/
#define IN_LIBXML
#include "libxml.h"
#ifdef LIBXML_READER_ENABLED
#include <string.h> /* for memset() only ! */
#include <stdarg.h>
#include <ctype.h>
#include <stdlib.h>
#include <libxml/xmlmemory.h>
#include <libxml/xmlIO.h>
#include <libxml/xmlreader.h>
#include <libxml/parserInternals.h>
#ifdef LIBXML_SCHEMAS_ENABLED
#include <libxml/relaxng.h>
#include <libxml/xmlschemas.h>
#endif
#include <libxml/uri.h>
#ifdef LIBXML_XINCLUDE_ENABLED
#include <libxml/xinclude.h>
#endif
#ifdef LIBXML_PATTERN_ENABLED
#include <libxml/pattern.h>
#endif
#include "private/buf.h"
#include "private/error.h"
#include "private/tree.h"
#include "private/parser.h"
#ifdef LIBXML_XINCLUDE_ENABLED
#include "private/xinclude.h"
#endif
#ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION
/* Keeping free objects can hide memory errors. */
#define MAX_FREE_NODES 1
#else
#define MAX_FREE_NODES 100
#endif
#ifndef va_copy
#ifdef __va_copy
#define va_copy(dest, src) __va_copy(dest, src)
#else
#define va_copy(dest, src) memcpy(dest, src, sizeof(va_list))
#endif
#endif
#define CHUNK_SIZE 512
/************************************************************************
* *
* The parser: maps the Text Reader API on top of the existing *
* parsing routines building a tree *
* *
************************************************************************/
#define XML_TEXTREADER_INPUT 1
#define XML_TEXTREADER_CTXT 2
typedef enum {
XML_TEXTREADER_NONE = -1,
XML_TEXTREADER_START= 0,
XML_TEXTREADER_ELEMENT= 1,
XML_TEXTREADER_END= 2,
XML_TEXTREADER_EMPTY= 3,
XML_TEXTREADER_BACKTRACK= 4,
XML_TEXTREADER_DONE= 5,
XML_TEXTREADER_ERROR= 6
} xmlTextReaderState;
typedef enum {
XML_TEXTREADER_NOT_VALIDATE = 0,
XML_TEXTREADER_VALIDATE_DTD = 1,
XML_TEXTREADER_VALIDATE_RNG = 2,
XML_TEXTREADER_VALIDATE_XSD = 4
} xmlTextReaderValidate;
struct _xmlTextReader {
int mode; /* the parsing mode */
xmlDocPtr doc; /* when walking an existing doc */
xmlTextReaderValidate validate;/* is there any validation */
int allocs; /* what structure were deallocated */
xmlTextReaderState state;
xmlParserCtxtPtr ctxt; /* the parser context */
xmlSAXHandlerPtr sax; /* the parser SAX callbacks */
xmlParserInputBufferPtr input; /* the input */
startElementSAXFunc startElement;/* initial SAX callbacks */
endElementSAXFunc endElement; /* idem */
startElementNsSAX2Func startElementNs;/* idem */
endElementNsSAX2Func endElementNs; /* idem */
charactersSAXFunc characters;
cdataBlockSAXFunc cdataBlock;
unsigned int base; /* base of the segment in the input */
unsigned int cur; /* current position in the input */
xmlNodePtr node; /* current node */
xmlNodePtr curnode;/* current attribute node */
int depth; /* depth of the current node */
xmlNodePtr faketext;/* fake xmlNs chld */
int preserve;/* preserve the resulting document */
xmlBufPtr buffer; /* used to return const xmlChar * */
xmlDictPtr dict; /* the context dictionary */
/* entity stack when traversing entities content */
xmlNodePtr ent; /* Current Entity Ref Node */
int entNr; /* Depth of the entities stack */
int entMax; /* Max depth of the entities stack */
xmlNodePtr *entTab; /* array of entities */
/* error handling */
xmlTextReaderErrorFunc errorFunc; /* callback function */
void *errorFuncArg; /* callback function user argument */
#ifdef LIBXML_SCHEMAS_ENABLED
/* Handling of RelaxNG validation */
xmlRelaxNGPtr rngSchemas; /* The Relax NG schemas */
xmlRelaxNGValidCtxtPtr rngValidCtxt;/* The Relax NG validation context */
int rngPreserveCtxt; /* 1 if the context was provided by the user */
int rngValidErrors;/* The number of errors detected */
xmlNodePtr rngFullNode; /* the node if RNG not progressive */
/* Handling of Schemas validation */
xmlSchemaPtr xsdSchemas; /* The Schemas schemas */
xmlSchemaValidCtxtPtr xsdValidCtxt;/* The Schemas validation context */
int xsdPreserveCtxt; /* 1 if the context was provided by the user */
int xsdValidErrors;/* The number of errors detected */
xmlSchemaSAXPlugPtr xsdPlug; /* the schemas plug in SAX pipeline */
#endif
#ifdef LIBXML_XINCLUDE_ENABLED
/* Handling of XInclude processing */
int xinclude; /* is xinclude asked for */
const xmlChar * xinclude_name; /* the xinclude name from dict */
xmlXIncludeCtxtPtr xincctxt; /* the xinclude context */
int in_xinclude; /* counts for xinclude */
#endif
#ifdef LIBXML_PATTERN_ENABLED
int patternNr; /* number of preserve patterns */
int patternMax; /* max preserve patterns */
xmlPatternPtr *patternTab; /* array of preserve patterns */
#endif
int preserves; /* level of preserves */
int parserFlags; /* the set of options set */
/* Structured error handling */
xmlStructuredErrorFunc sErrorFunc; /* callback function */
};
#define NODE_IS_EMPTY 0x1
#define NODE_IS_PRESERVED 0x2
#define NODE_IS_SPRESERVED 0x4
static int xmlTextReaderReadTree(xmlTextReaderPtr reader);
static int xmlTextReaderNextTree(xmlTextReaderPtr reader);
/**
* 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));
static void xmlTextReaderFreeNode(xmlTextReaderPtr reader, xmlNodePtr cur);
static void xmlTextReaderFreeNodeList(xmlTextReaderPtr reader, xmlNodePtr cur);
static void
xmlTextReaderErrMemory(xmlTextReaderPtr reader) {
if (reader->ctxt != NULL)
xmlCtxtErrMemory(reader->ctxt);
else
xmlRaiseMemoryError(NULL, NULL, NULL, XML_FROM_PARSER, NULL);
reader->mode = XML_TEXTREADER_MODE_ERROR;
reader->state = XML_TEXTREADER_ERROR;
}
static xmlChar *
readerStrdup(xmlTextReaderPtr reader, const xmlChar *string) {
xmlChar *copy;
if (string == NULL)
return(NULL);
copy = xmlStrdup(string);
if (copy == NULL)
xmlTextReaderErrMemory(reader);
return(copy);
}
static const xmlChar *
constString(xmlTextReaderPtr reader, const xmlChar *string) {
const xmlChar *dictString;
if (string == NULL)
return(NULL);
dictString = xmlDictLookup(reader->dict, string, -1);
if (dictString == NULL)
xmlTextReaderErrMemory(reader);
return(dictString);
}
static const xmlChar *
constQString(xmlTextReaderPtr reader, const xmlChar *prefix,
const xmlChar *name) {
const xmlChar *dictString;
if (name == NULL)
return(NULL);
dictString = xmlDictQLookup(reader->dict, prefix, name);
if (dictString == NULL)
xmlTextReaderErrMemory(reader);
return(dictString);
}
/************************************************************************
* *
* Our own version of the freeing routines as we recycle nodes *
* *
************************************************************************/
/**
* xmlTextReaderFreeProp:
* @reader: the xmlTextReaderPtr used
* @cur: the node
*
* Free a node.
*/
static void
xmlTextReaderFreeProp(xmlTextReaderPtr reader, xmlAttrPtr cur) {
xmlDictPtr dict;
if ((reader != NULL) && (reader->ctxt != NULL))
dict = reader->ctxt->dict;
else
dict = NULL;
if (cur == NULL) return;
if ((__xmlRegisterCallbacks) && (xmlDeregisterNodeDefaultValue))
xmlDeregisterNodeDefaultValue((xmlNodePtr) cur);
if (cur->children != NULL)
xmlTextReaderFreeNodeList(reader, cur->children);
if (cur->id != NULL) {
/*
* Operating in streaming mode, attr is gonna disappear
*/
cur->id->attr = NULL;
if (cur->id->name != NULL)
DICT_FREE(cur->id->name);
cur->id->name = cur->name;
cur->name = NULL;
} else {
DICT_FREE(cur->name);
}
if ((reader != NULL) && (reader->ctxt != NULL) &&
(reader->ctxt->freeAttrsNr < MAX_FREE_NODES)) {
cur->next = reader->ctxt->freeAttrs;
reader->ctxt->freeAttrs = cur;
reader->ctxt->freeAttrsNr++;
} else {
xmlFree(cur);
}
}
/**
* xmlTextReaderFreePropList:
* @reader: the xmlTextReaderPtr used
* @cur: the first property in the list
*
* Free a property and all its siblings, all the children are freed too.
*/
static void
xmlTextReaderFreePropList(xmlTextReaderPtr reader, xmlAttrPtr cur) {
xmlAttrPtr next;
while (cur != NULL) {
next = cur->next;
xmlTextReaderFreeProp(reader, cur);
cur = next;
}
}
/**
* xmlTextReaderFreeNodeList:
* @reader: the xmlTextReaderPtr used
* @cur: the first node in the list
*
* Free a node and all its siblings, this is a recursive behaviour, all
* the children are freed too.
*/
static void
xmlTextReaderFreeNodeList(xmlTextReaderPtr reader, xmlNodePtr cur) {
xmlNodePtr next;
xmlNodePtr parent;
xmlDictPtr dict;
size_t depth = 0;
if ((reader != NULL) && (reader->ctxt != NULL))
dict = reader->ctxt->dict;
else
dict = NULL;
if (cur == NULL) return;
if (cur->type == XML_NAMESPACE_DECL) {
xmlFreeNsList((xmlNsPtr) cur);
return;
}
if ((cur->type == XML_DOCUMENT_NODE) ||
(cur->type == XML_HTML_DOCUMENT_NODE)) {
xmlFreeDoc((xmlDocPtr) cur);
return;
}
while (1) {
while ((cur->type != XML_DTD_NODE) &&
(cur->type != XML_ENTITY_REF_NODE) &&
(cur->children != NULL) &&
(cur->children->parent == cur)) {
cur = cur->children;
depth += 1;
}
next = cur->next;
parent = cur->parent;
/* unroll to speed up freeing the document */
if (cur->type != XML_DTD_NODE) {
if ((__xmlRegisterCallbacks) && (xmlDeregisterNodeDefaultValue))
xmlDeregisterNodeDefaultValue(cur);
if (((cur->type == XML_ELEMENT_NODE) ||
(cur->type == XML_XINCLUDE_START) ||
(cur->type == XML_XINCLUDE_END)) &&
(cur->properties != NULL))
xmlTextReaderFreePropList(reader, cur->properties);
if ((cur->content != (xmlChar *) &(cur->properties)) &&
(cur->type != XML_ELEMENT_NODE) &&
(cur->type != XML_XINCLUDE_START) &&
(cur->type != XML_XINCLUDE_END) &&
(cur->type != XML_ENTITY_REF_NODE)) {
DICT_FREE(cur->content);
}
if (((cur->type == XML_ELEMENT_NODE) ||
(cur->type == XML_XINCLUDE_START) ||
(cur->type == XML_XINCLUDE_END)) &&
(cur->nsDef != NULL))
xmlFreeNsList(cur->nsDef);
/*
* we don't free element names here they are interned now
*/
if ((cur->type != XML_TEXT_NODE) &&
(cur->type != XML_COMMENT_NODE))
DICT_FREE(cur->name);
if (((cur->type == XML_ELEMENT_NODE) ||
(cur->type == XML_TEXT_NODE)) &&
(reader != NULL) && (reader->ctxt != NULL) &&
(reader->ctxt->freeElemsNr < MAX_FREE_NODES)) {
cur->next = reader->ctxt->freeElems;
reader->ctxt->freeElems = cur;
reader->ctxt->freeElemsNr++;
} else {
xmlFree(cur);
}
}
if (next != NULL) {
cur = next;
} else {
if ((depth == 0) || (parent == NULL))
break;
depth -= 1;
cur = parent;
cur->children = NULL;
}
}
}
/**
* xmlTextReaderFreeNode:
* @reader: the xmlTextReaderPtr used
* @cur: the node
*
* Free a node, this is a recursive behaviour, all the children are freed too.
* This doesn't unlink the child from the list, use xmlUnlinkNode() first.
*/
static void
xmlTextReaderFreeNode(xmlTextReaderPtr reader, xmlNodePtr cur) {
xmlDictPtr dict;
if ((reader != NULL) && (reader->ctxt != NULL))
dict = reader->ctxt->dict;
else
dict = NULL;
if (cur->type == XML_DTD_NODE) {
xmlFreeDtd((xmlDtdPtr) cur);
return;
}
if (cur->type == XML_NAMESPACE_DECL) {
xmlFreeNs((xmlNsPtr) cur);
return;
}
if (cur->type == XML_ATTRIBUTE_NODE) {
xmlTextReaderFreeProp(reader, (xmlAttrPtr) cur);
return;
}
if ((cur->children != NULL) &&
(cur->type != XML_ENTITY_REF_NODE)) {
if (cur->children->parent == cur)
xmlTextReaderFreeNodeList(reader, cur->children);
cur->children = NULL;
}
if ((__xmlRegisterCallbacks) && (xmlDeregisterNodeDefaultValue))
xmlDeregisterNodeDefaultValue(cur);
if (((cur->type == XML_ELEMENT_NODE) ||
(cur->type == XML_XINCLUDE_START) ||
(cur->type == XML_XINCLUDE_END)) &&
(cur->properties != NULL))
xmlTextReaderFreePropList(reader, cur->properties);
if ((cur->content != (xmlChar *) &(cur->properties)) &&
(cur->type != XML_ELEMENT_NODE) &&
(cur->type != XML_XINCLUDE_START) &&
(cur->type != XML_XINCLUDE_END) &&
(cur->type != XML_ENTITY_REF_NODE)) {
DICT_FREE(cur->content);
}
if (((cur->type == XML_ELEMENT_NODE) ||
(cur->type == XML_XINCLUDE_START) ||
(cur->type == XML_XINCLUDE_END)) &&
(cur->nsDef != NULL))
xmlFreeNsList(cur->nsDef);
/*
* we don't free names here they are interned now
*/
if ((cur->type != XML_TEXT_NODE) &&
(cur->type != XML_COMMENT_NODE))
DICT_FREE(cur->name);
if (((cur->type == XML_ELEMENT_NODE) ||
(cur->type == XML_TEXT_NODE)) &&
(reader != NULL) && (reader->ctxt != NULL) &&
(reader->ctxt->freeElemsNr < MAX_FREE_NODES)) {
cur->next = reader->ctxt->freeElems;
reader->ctxt->freeElems = cur;
reader->ctxt->freeElemsNr++;
} else {
xmlFree(cur);
}
}
/**
* xmlTextReaderFreeDoc:
* @reader: the xmlTextReaderPtr used
* @cur: pointer to the document
*
* Free up all the structures used by a document, tree included.
*/
static void
xmlTextReaderFreeDoc(xmlTextReaderPtr reader, xmlDocPtr cur) {
xmlDtdPtr extSubset, intSubset;
if (cur == NULL) return;
if ((__xmlRegisterCallbacks) && (xmlDeregisterNodeDefaultValue))
xmlDeregisterNodeDefaultValue((xmlNodePtr) cur);
/*
* Do this before freeing the children list to avoid ID lookups
*/
if (cur->ids != NULL) xmlFreeIDTable((xmlIDTablePtr) cur->ids);
cur->ids = NULL;
if (cur->refs != NULL) xmlFreeRefTable((xmlRefTablePtr) cur->refs);
cur->refs = NULL;
extSubset = cur->extSubset;
intSubset = cur->intSubset;
if (intSubset == extSubset)
extSubset = NULL;
if (extSubset != NULL) {
xmlUnlinkNode((xmlNodePtr) cur->extSubset);
cur->extSubset = NULL;
xmlFreeDtd(extSubset);
}
if (intSubset != NULL) {
xmlUnlinkNode((xmlNodePtr) cur->intSubset);
cur->intSubset = NULL;
xmlFreeDtd(intSubset);
}
if (cur->children != NULL) xmlTextReaderFreeNodeList(reader, cur->children);
if (cur->version != NULL) xmlFree((char *) cur->version);
if (cur->name != NULL) xmlFree((char *) cur->name);
if (cur->encoding != NULL) xmlFree((char *) cur->encoding);
if (cur->oldNs != NULL) xmlFreeNsList(cur->oldNs);
if (cur->URL != NULL) xmlFree((char *) cur->URL);
if (cur->dict != NULL) xmlDictFree(cur->dict);
xmlFree(cur);
}
/************************************************************************
* *
* The reader core parser *
* *
************************************************************************/
static void
xmlTextReaderStructuredRelay(void *userData, const xmlError *error)
{
xmlTextReaderPtr reader = (xmlTextReaderPtr) userData;
if (reader->sErrorFunc != NULL) {
reader->sErrorFunc(reader->errorFuncArg, error);
} else if (reader->errorFunc != NULL) {
xmlParserSeverities severity;
if ((error->domain == XML_FROM_VALID) ||
(error->domain == XML_FROM_DTD)) {
if (error->level == XML_ERR_WARNING)
severity = XML_PARSER_SEVERITY_VALIDITY_WARNING;
else
severity = XML_PARSER_SEVERITY_VALIDITY_ERROR;
} else {
if (error->level == XML_ERR_WARNING)
severity = XML_PARSER_SEVERITY_WARNING;
else
severity = XML_PARSER_SEVERITY_ERROR;
}
reader->errorFunc(reader->errorFuncArg, error->message, severity,
reader->ctxt);
}
}
/**
* xmlTextReaderEntPush:
* @reader: the xmlTextReaderPtr used
* @value: the entity reference node
*
* Pushes a new entity reference node on top of the entities stack
*
* Returns -1 in case of error, the index in the stack otherwise
*/
static int
xmlTextReaderEntPush(xmlTextReaderPtr reader, xmlNodePtr value)
{
if (reader->entNr >= reader->entMax) {
size_t newSize = reader->entMax == 0 ? 10 : reader->entMax * 2;
xmlNodePtr *tmp;
tmp = (xmlNodePtr *) xmlRealloc(reader->entTab,
newSize * sizeof(*tmp));
if (tmp == NULL) {
xmlTextReaderErrMemory(reader);
return (-1);
}
reader->entTab = tmp;
reader->entMax = newSize;
}
reader->entTab[reader->entNr] = value;
reader->ent = value;
return (reader->entNr++);
}
/**
* xmlTextReaderEntPop:
* @reader: the xmlTextReaderPtr used
*
* Pops the top element entity from the entities stack
*
* Returns the entity just removed
*/
static xmlNodePtr
xmlTextReaderEntPop(xmlTextReaderPtr reader)
{
xmlNodePtr ret;
if (reader->entNr <= 0)
return (NULL);
reader->entNr--;
if (reader->entNr > 0)
reader->ent = reader->entTab[reader->entNr - 1];
else
reader->ent = NULL;
ret = reader->entTab[reader->entNr];
reader->entTab[reader->entNr] = NULL;
return (ret);
}
/**
* xmlTextReaderStartElement:
* @ctx: the user data (XML parser context)
* @fullname: The element name, including namespace prefix
* @atts: An array of name/value attributes pairs, NULL terminated
*
* called when an opening tag has been processed.
*/
static void
xmlTextReaderStartElement(void *ctx, const xmlChar *fullname,
const xmlChar **atts) {
xmlParserCtxtPtr ctxt = (xmlParserCtxtPtr) ctx;
xmlTextReaderPtr reader = ctxt->_private;
if ((reader != NULL) && (reader->startElement != NULL)) {
reader->startElement(ctx, fullname, atts);
if ((ctxt->node != NULL) && (ctxt->input != NULL) &&
(ctxt->input->cur != NULL) && (ctxt->input->cur[0] == '/') &&
(ctxt->input->cur[1] == '>'))
ctxt->node->extra = NODE_IS_EMPTY;
}
if (reader != NULL)
reader->state = XML_TEXTREADER_ELEMENT;
}
/**
* xmlTextReaderEndElement:
* @ctx: the user data (XML parser context)
* @fullname: The element name, including namespace prefix
*
* called when an ending tag has been processed.
*/
static void
xmlTextReaderEndElement(void *ctx, const xmlChar *fullname) {
xmlParserCtxtPtr ctxt = (xmlParserCtxtPtr) ctx;
xmlTextReaderPtr reader = ctxt->_private;
if ((reader != NULL) && (reader->endElement != NULL)) {
reader->endElement(ctx, fullname);
}
}
/**
* xmlTextReaderStartElementNs:
* @ctx: the user data (XML parser context)
* @localname: the local name of the element
* @prefix: the element namespace prefix if available
* @URI: the element namespace name if available
* @nb_namespaces: number of namespace definitions on that node
* @namespaces: pointer to the array of prefix/URI pairs namespace definitions
* @nb_attributes: the number of attributes on that node
* nb_defaulted: the number of defaulted attributes.
* @attributes: pointer to the array of (localname/prefix/URI/value/end)
* attribute values.
*
* called when an opening tag has been processed.
*/
static void
xmlTextReaderStartElementNs(void *ctx,
const xmlChar *localname,
const xmlChar *prefix,
const xmlChar *URI,
int nb_namespaces,
const xmlChar **namespaces,
int nb_attributes,
int nb_defaulted,
const xmlChar **attributes)
{
xmlParserCtxtPtr ctxt = (xmlParserCtxtPtr) ctx;
xmlTextReaderPtr reader = ctxt->_private;
if ((reader != NULL) && (reader->startElementNs != NULL)) {
reader->startElementNs(ctx, localname, prefix, URI, nb_namespaces,
namespaces, nb_attributes, nb_defaulted,
attributes);
if ((ctxt->node != NULL) && (ctxt->input != NULL) &&
(ctxt->input->cur != NULL) && (ctxt->input->cur[0] == '/') &&
(ctxt->input->cur[1] == '>'))
ctxt->node->extra = NODE_IS_EMPTY;
}
if (reader != NULL)
reader->state = XML_TEXTREADER_ELEMENT;
}
/**
* xmlTextReaderEndElementNs:
* @ctx: the user data (XML parser context)
* @localname: the local name of the element
* @prefix: the element namespace prefix if available
* @URI: the element namespace name if available
*
* called when an ending tag has been processed.
*/
static void
xmlTextReaderEndElementNs(void *ctx,
const xmlChar * localname,
const xmlChar * prefix,
const xmlChar * URI)
{
xmlParserCtxtPtr ctxt = (xmlParserCtxtPtr) ctx;
xmlTextReaderPtr reader = ctxt->_private;
if ((reader != NULL) && (reader->endElementNs != NULL)) {
reader->endElementNs(ctx, localname, prefix, URI);
}
}
/**
* xmlTextReaderCharacters:
* @ctx: the user data (XML parser context)
* @ch: a xmlChar string
* @len: the number of xmlChar
*
* receiving some chars from the parser.
*/
static void
xmlTextReaderCharacters(void *ctx, const xmlChar *ch, int len)
{
xmlParserCtxtPtr ctxt = (xmlParserCtxtPtr) ctx;
xmlTextReaderPtr reader = ctxt->_private;
if ((reader != NULL) && (reader->characters != NULL)) {
reader->characters(ctx, ch, len);
}
}
/**
* xmlTextReaderCDataBlock:
* @ctx: the user data (XML parser context)
* @value: The pcdata content
* @len: the block length
*
* called when a pcdata block has been parsed
*/
static void
xmlTextReaderCDataBlock(void *ctx, const xmlChar *ch, int len)
{
xmlParserCtxtPtr ctxt = (xmlParserCtxtPtr) ctx;
xmlTextReaderPtr reader = ctxt->_private;
if ((reader != NULL) && (reader->cdataBlock != NULL)) {
reader->cdataBlock(ctx, ch, len);
}
}
/**
* xmlTextReaderPushData:
* @reader: the xmlTextReaderPtr used
*
* Push data down the progressive parser until a significant callback
* got raised.
*
* Returns -1 in case of failure, 0 otherwise
*/
static int
xmlTextReaderPushData(xmlTextReaderPtr reader) {
xmlBufPtr inbuf;
int val, s;
xmlTextReaderState oldstate;
if ((reader->input == NULL) || (reader->input->buffer == NULL))
return(-1);
oldstate = reader->state;
reader->state = XML_TEXTREADER_NONE;
inbuf = reader->input->buffer;
while (reader->state == XML_TEXTREADER_NONE) {
if (xmlBufUse(inbuf) < reader->cur + CHUNK_SIZE) {
/*
* Refill the buffer unless we are at the end of the stream
*/
if (reader->mode != XML_TEXTREADER_MODE_EOF) {
val = xmlParserInputBufferRead(reader->input, 4096);
if (val == 0) {
if (xmlBufUse(inbuf) == reader->cur) {
reader->mode = XML_TEXTREADER_MODE_EOF;
break;
}
} else if (val < 0) {
xmlCtxtErrIO(reader->ctxt, reader->input->error, NULL);
reader->mode = XML_TEXTREADER_MODE_ERROR;
reader->state = XML_TEXTREADER_ERROR;
return(-1);
}
} else
break;
}
/*
* parse by block of CHUNK_SIZE bytes, various tests show that
* it's the best tradeoff at least on a 1.2GH Duron
*/
if (xmlBufUse(inbuf) >= reader->cur + CHUNK_SIZE) {
val = xmlParseChunk(reader->ctxt,
(const char *) xmlBufContent(inbuf) + reader->cur,
CHUNK_SIZE, 0);
reader->cur += CHUNK_SIZE;
if (val != 0)
reader->ctxt->wellFormed = 0;
if (reader->ctxt->wellFormed == 0)
break;
} else {
s = xmlBufUse(inbuf) - reader->cur;
val = xmlParseChunk(reader->ctxt,
(const char *) xmlBufContent(inbuf) + reader->cur,
s, 0);
reader->cur += s;
if (val != 0)
reader->ctxt->wellFormed = 0;
break;
}
}
reader->state = oldstate;
/*
* Discard the consumed input when needed and possible
*/
if (reader->mode == XML_TEXTREADER_MODE_INTERACTIVE) {
if (reader->input->readcallback != NULL) {
if ((reader->cur >= 4096) &&
(xmlBufUse(inbuf) - reader->cur <= CHUNK_SIZE)) {
val = xmlBufShrink(inbuf, reader->cur);
if (val >= 0) {
reader->cur -= val;
}
}
}
}
/*
* At the end of the stream signal that the work is done to the Push
* parser.
*/
else if (reader->mode == XML_TEXTREADER_MODE_EOF) {
if (reader->state != XML_TEXTREADER_DONE) {
s = xmlBufUse(inbuf) - reader->cur;
val = xmlParseChunk(reader->ctxt,
(const char *) xmlBufContent(inbuf) + reader->cur,
s, 1);
reader->cur = xmlBufUse(inbuf);
reader->state = XML_TEXTREADER_DONE;
if (val != 0) {
if (reader->ctxt->wellFormed)
reader->ctxt->wellFormed = 0;
else
return(-1);
}
}
}
if (reader->ctxt->wellFormed == 0) {
reader->mode = XML_TEXTREADER_MODE_EOF;
return(-1);
}
return(0);
}
#ifdef LIBXML_REGEXP_ENABLED
/**
* xmlTextReaderValidatePush:
* @reader: the xmlTextReaderPtr used
*
* Push the current node for validation
*/
static int
xmlTextReaderValidatePush(xmlTextReaderPtr reader) {
xmlNodePtr node = reader->node;
#ifdef LIBXML_VALID_ENABLED
if ((reader->validate == XML_TEXTREADER_VALIDATE_DTD) &&
(reader->ctxt != NULL) && (reader->ctxt->validate == 1)) {
if ((node->ns == NULL) || (node->ns->prefix == NULL)) {
reader->ctxt->valid &= xmlValidatePushElement(&reader->ctxt->vctxt,
reader->ctxt->myDoc, node, node->name);
} else {
xmlChar buf[50];
xmlChar *qname;
qname = xmlBuildQName(node->name, node->ns->prefix, buf, 50);
if (qname == NULL) {
xmlTextReaderErrMemory(reader);
return(-1);
}
reader->ctxt->valid &= xmlValidatePushElement(&reader->ctxt->vctxt,
reader->ctxt->myDoc, node, qname);
if (qname != buf)
xmlFree(qname);
}
/*if (reader->ctxt->errNo == XML_ERR_NO_MEMORY) {
reader->mode = XML_TEXTREADER_MODE_ERROR;
reader->state = XML_TEXTREADER_ERROR;
return(-1);
}*/
}
#endif /* LIBXML_VALID_ENABLED */
#ifdef LIBXML_SCHEMAS_ENABLED
if ((reader->validate == XML_TEXTREADER_VALIDATE_RNG) &&
(reader->rngValidCtxt != NULL)) {
int ret;
if (reader->rngFullNode != NULL) return(0);
ret = xmlRelaxNGValidatePushElement(reader->rngValidCtxt,
reader->ctxt->myDoc,
node);
if (ret == 0) {
/*
* this element requires a full tree
*/
node = xmlTextReaderExpand(reader);
if (node == NULL) {
ret = -1;
} else {
ret = xmlRelaxNGValidateFullElement(reader->rngValidCtxt,
reader->ctxt->myDoc,
node);
reader->rngFullNode = node;
}
}
if (ret != 1)
reader->rngValidErrors++;
}
#endif
return(0);
}
/**
* xmlTextReaderValidateCData:
* @reader: the xmlTextReaderPtr used
* @data: pointer to the CData
* @len: length of the CData block in bytes.
*
* Push some CData for validation
*/
static void
xmlTextReaderValidateCData(xmlTextReaderPtr reader,
const xmlChar *data, int len) {
#ifdef LIBXML_VALID_ENABLED
if ((reader->validate == XML_TEXTREADER_VALIDATE_DTD) &&
(reader->ctxt != NULL) && (reader->ctxt->validate == 1)) {
reader->ctxt->valid &= xmlValidatePushCData(&reader->ctxt->vctxt,
data, len);
}
#endif /* LIBXML_VALID_ENABLED */
#ifdef LIBXML_SCHEMAS_ENABLED
if ((reader->validate == XML_TEXTREADER_VALIDATE_RNG) &&
(reader->rngValidCtxt != NULL)) {
int ret;
if (reader->rngFullNode != NULL) return;
ret = xmlRelaxNGValidatePushCData(reader->rngValidCtxt, data, len);
if (ret != 1)
reader->rngValidErrors++;
}
#endif
}
/**
* xmlTextReaderValidatePop:
* @reader: the xmlTextReaderPtr used
*
* Pop the current node from validation
*/
static int
xmlTextReaderValidatePop(xmlTextReaderPtr reader) {
xmlNodePtr node = reader->node;
#ifdef LIBXML_VALID_ENABLED
if ((reader->validate == XML_TEXTREADER_VALIDATE_DTD) &&
(reader->ctxt != NULL) && (reader->ctxt->validate == 1)) {
if ((node->ns == NULL) || (node->ns->prefix == NULL)) {
reader->ctxt->valid &= xmlValidatePopElement(&reader->ctxt->vctxt,
reader->ctxt->myDoc, node, node->name);
} else {
xmlChar buf[50];
xmlChar *qname;
qname = xmlBuildQName(node->name, node->ns->prefix, buf, 50);
if (qname == NULL) {
xmlTextReaderErrMemory(reader);
return(-1);
}
reader->ctxt->valid &= xmlValidatePopElement(&reader->ctxt->vctxt,
reader->ctxt->myDoc, node, qname);
if (qname != buf)
xmlFree(qname);
}
/*if (reader->ctxt->errNo == XML_ERR_NO_MEMORY) {
reader->mode = XML_TEXTREADER_MODE_ERROR;
reader->state = XML_TEXTREADER_ERROR;
return(-1);
}*/
}
#endif /* LIBXML_VALID_ENABLED */
#ifdef LIBXML_SCHEMAS_ENABLED
if ((reader->validate == XML_TEXTREADER_VALIDATE_RNG) &&
(reader->rngValidCtxt != NULL)) {
int ret;
if (reader->rngFullNode != NULL) {
if (node == reader->rngFullNode)
reader->rngFullNode = NULL;
return(0);
}
ret = xmlRelaxNGValidatePopElement(reader->rngValidCtxt,
reader->ctxt->myDoc,
node);
if (ret != 1)
reader->rngValidErrors++;
}
#endif
return(0);
}
/**
* xmlTextReaderValidateEntity:
* @reader: the xmlTextReaderPtr used
*
* Handle the validation when an entity reference is encountered and
* entity substitution is not activated. As a result the parser interface
* must walk through the entity and do the validation calls
*/
static int
xmlTextReaderValidateEntity(xmlTextReaderPtr reader) {
xmlNodePtr oldnode = reader->node;
xmlNodePtr node = reader->node;
do {
if (node->type == XML_ENTITY_REF_NODE) {
if ((node->children != NULL) &&
(node->children->type == XML_ENTITY_DECL) &&
(node->children->children != NULL)) {
if (xmlTextReaderEntPush(reader, node) < 0) {
if (node == oldnode)
break;
goto skip_children;
}
node = node->children->children;
continue;
} else {
/*
* The error has probably been raised already.
*/
if (node == oldnode)
break;
goto skip_children;
}
#ifdef LIBXML_REGEXP_ENABLED
} else if (node->type == XML_ELEMENT_NODE) {
reader->node = node;
if (xmlTextReaderValidatePush(reader) < 0)
return(-1);
} else if ((node->type == XML_TEXT_NODE) ||
(node->type == XML_CDATA_SECTION_NODE)) {
xmlTextReaderValidateCData(reader, node->content,
xmlStrlen(node->content));
#endif
}
/*
* go to next node
*/
if (node->children != NULL) {
node = node->children;
continue;
} else if (node->type == XML_ELEMENT_NODE) {
if (xmlTextReaderValidatePop(reader) < 0)
return(-1);
}
skip_children:
if (node->next != NULL) {
node = node->next;
continue;
}
do {
node = node->parent;
if (node->type == XML_ELEMENT_NODE) {
xmlNodePtr tmp;
if (reader->entNr == 0) {
while ((tmp = node->last) != NULL) {
if ((tmp->extra & NODE_IS_PRESERVED) == 0) {
xmlUnlinkNode(tmp);
xmlTextReaderFreeNode(reader, tmp);
} else
break;
}
}
reader->node = node;
if (xmlTextReaderValidatePop(reader) < 0)
return(-1);
}
if ((node->type == XML_ENTITY_DECL) &&
(reader->ent != NULL) && (reader->ent->children == node)) {
node = xmlTextReaderEntPop(reader);
}
if (node == oldnode)
break;
if (node->next != NULL) {
node = node->next;
break;
}
} while ((node != NULL) && (node != oldnode));
} while ((node != NULL) && (node != oldnode));
reader->node = oldnode;
return(0);
}
#endif /* LIBXML_REGEXP_ENABLED */
/**
* xmlTextReaderGetSuccessor:
* @cur: the current node
*
* Get the successor of a node if available.
*
* Returns the successor node or NULL
*/
static xmlNodePtr
xmlTextReaderGetSuccessor(xmlNodePtr cur) {
if (cur == NULL) return(NULL) ; /* ERROR */
if (cur->next != NULL) return(cur->next) ;
do {
cur = cur->parent;
if (cur == NULL) break;
if (cur->next != NULL) return(cur->next);
} while (cur != NULL);
return(cur);
}
/**
* xmlTextReaderDoExpand:
* @reader: the xmlTextReaderPtr used
*
* Makes sure that the current node is fully read as well as all its
* descendant. It means the full DOM subtree must be available at the
* end of the call.
*
* Returns 1 if the node was expanded successfully, 0 if there is no more
* nodes to read, or -1 in case of error
*/
static int
xmlTextReaderDoExpand(xmlTextReaderPtr reader) {
int val;
if ((reader == NULL) || (reader->node == NULL) || (reader->ctxt == NULL))
return(-1);
do {
if (PARSER_STOPPED(reader->ctxt))
return(1);
if (xmlTextReaderGetSuccessor(reader->node) != NULL)
return(1);
if (reader->ctxt->nodeNr < reader->depth)
return(1);
if (reader->mode == XML_TEXTREADER_MODE_EOF)
return(1);
val = xmlTextReaderPushData(reader);
if (val < 0){
reader->mode = XML_TEXTREADER_MODE_ERROR;
reader->state = XML_TEXTREADER_ERROR;
return(-1);
}
} while(reader->mode != XML_TEXTREADER_MODE_EOF);
return(1);
}
/**
* xmlTextReaderRead:
* @reader: the xmlTextReaderPtr used
*
* Moves the position of the current instance to the next node in
* the stream, exposing its properties.
*
* Returns 1 if the node was read successfully, 0 if there is no more
* nodes to read, or -1 in case of error
*/
int
xmlTextReaderRead(xmlTextReaderPtr reader) {
int val, olddepth = 0;
xmlTextReaderState oldstate = XML_TEXTREADER_START;
xmlNodePtr oldnode = NULL;
if (reader == NULL)
return(-1);
if (reader->state == XML_TEXTREADER_ERROR)
return(-1);
reader->curnode = NULL;
if (reader->doc != NULL)
return(xmlTextReaderReadTree(reader));
if (reader->ctxt == NULL)
return(-1);
if (reader->mode == XML_TEXTREADER_MODE_INITIAL) {
reader->mode = XML_TEXTREADER_MODE_INTERACTIVE;
/*
* Initial state
*/
do {
val = xmlTextReaderPushData(reader);
if (val < 0) {
reader->mode = XML_TEXTREADER_MODE_ERROR;
reader->state = XML_TEXTREADER_ERROR;
return(-1);
}
} while ((reader->ctxt->node == NULL) &&
((reader->mode != XML_TEXTREADER_MODE_EOF) &&
(reader->state != XML_TEXTREADER_DONE)));
if (reader->ctxt->node == NULL) {
if (reader->ctxt->myDoc != NULL) {
reader->node = reader->ctxt->myDoc->children;
}
if (reader->node == NULL) {
reader->mode = XML_TEXTREADER_MODE_ERROR;
reader->state = XML_TEXTREADER_ERROR;
return(-1);
}
reader->state = XML_TEXTREADER_ELEMENT;
} else {
if (reader->ctxt->myDoc != NULL) {
reader->node = reader->ctxt->myDoc->children;
}
if (reader->node == NULL)
reader->node = reader->ctxt->nodeTab[0];
reader->state = XML_TEXTREADER_ELEMENT;
}
reader->depth = 0;
reader->ctxt->parseMode = XML_PARSE_READER;
goto node_found;
}
oldstate = reader->state;
olddepth = reader->ctxt->nodeNr;
oldnode = reader->node;
get_next_node:
if (reader->node == NULL) {
if (reader->mode == XML_TEXTREADER_MODE_EOF) {
return(0);
} else {
reader->mode = XML_TEXTREADER_MODE_ERROR;
reader->state = XML_TEXTREADER_ERROR;
return(-1);
}
}
/*
* If we are not backtracking on ancestors or examined nodes,
* that the parser didn't finished or that we aren't at the end
* of stream, continue processing.
*/
while ((reader->node != NULL) && (reader->node->next == NULL) &&
(reader->ctxt->nodeNr == olddepth) &&
((oldstate == XML_TEXTREADER_BACKTRACK) ||
(reader->node->children == NULL) ||
(reader->node->type == XML_ENTITY_REF_NODE) ||
((reader->node->children != NULL) &&
(reader->node->children->type == XML_TEXT_NODE) &&
(reader->node->children->next == NULL)) ||
(reader->node->type == XML_DTD_NODE) ||
(reader->node->type == XML_DOCUMENT_NODE) ||
(reader->node->type == XML_HTML_DOCUMENT_NODE)) &&
((reader->ctxt->node == NULL) ||
(reader->ctxt->node == reader->node) ||
(reader->ctxt->node == reader->node->parent)) &&
(reader->ctxt->instate != XML_PARSER_EOF) &&
(PARSER_STOPPED(reader->ctxt) == 0)) {
val = xmlTextReaderPushData(reader);
if (val < 0) {
reader->mode = XML_TEXTREADER_MODE_ERROR;
reader->state = XML_TEXTREADER_ERROR;
return(-1);
}
if (reader->node == NULL)
goto node_end;
}
if (oldstate != XML_TEXTREADER_BACKTRACK) {
if ((reader->node->children != NULL) &&
(reader->node->type != XML_ENTITY_REF_NODE) &&
(reader->node->type != XML_XINCLUDE_START) &&
(reader->node->type != XML_DTD_NODE)) {
reader->node = reader->node->children;
reader->depth++;
reader->state = XML_TEXTREADER_ELEMENT;
goto node_found;
}
}
if (reader->node->next != NULL) {
if ((oldstate == XML_TEXTREADER_ELEMENT) &&
(reader->node->type == XML_ELEMENT_NODE) &&
(reader->node->children == NULL) &&
((reader->node->extra & NODE_IS_EMPTY) == 0)
#ifdef LIBXML_XINCLUDE_ENABLED
&& (reader->in_xinclude <= 0)
#endif
) {
reader->state = XML_TEXTREADER_END;
goto node_found;
}
#ifdef LIBXML_REGEXP_ENABLED
if ((reader->validate) &&
(reader->node->type == XML_ELEMENT_NODE))
if (xmlTextReaderValidatePop(reader) < 0)
return(-1);
#endif /* LIBXML_REGEXP_ENABLED */
if ((reader->preserves > 0) &&
(reader->node->extra & NODE_IS_SPRESERVED))
reader->preserves--;
reader->node = reader->node->next;
reader->state = XML_TEXTREADER_ELEMENT;
/*
* Cleanup of the old node
*/
if ((reader->preserves == 0) &&
#ifdef LIBXML_XINCLUDE_ENABLED
(reader->in_xinclude == 0) &&
#endif
(reader->entNr == 0) &&
(reader->node->prev != NULL) &&
(reader->node->prev->type != XML_DTD_NODE)) {
xmlNodePtr tmp = reader->node->prev;
if ((tmp->extra & NODE_IS_PRESERVED) == 0) {
if (oldnode == tmp)
oldnode = NULL;
xmlUnlinkNode(tmp);
xmlTextReaderFreeNode(reader, tmp);
}
}
goto node_found;
}
if ((oldstate == XML_TEXTREADER_ELEMENT) &&
(reader->node->type == XML_ELEMENT_NODE) &&
(reader->node->children == NULL) &&
((reader->node->extra & NODE_IS_EMPTY) == 0)) {;
reader->state = XML_TEXTREADER_END;
goto node_found;
}
#ifdef LIBXML_REGEXP_ENABLED
if ((reader->validate != XML_TEXTREADER_NOT_VALIDATE) &&
(reader->node->type == XML_ELEMENT_NODE)) {
if (xmlTextReaderValidatePop(reader) < 0)
return(-1);
}
#endif /* LIBXML_REGEXP_ENABLED */
if ((reader->preserves > 0) &&
(reader->node->extra & NODE_IS_SPRESERVED))
reader->preserves--;
reader->node = reader->node->parent;
if ((reader->node == NULL) ||
(reader->node->type == XML_DOCUMENT_NODE) ||
(reader->node->type == XML_HTML_DOCUMENT_NODE)) {
if (reader->mode != XML_TEXTREADER_MODE_EOF) {
val = xmlParseChunk(reader->ctxt, "", 0, 1);
reader->state = XML_TEXTREADER_DONE;
if (val != 0) {
reader->mode = XML_TEXTREADER_MODE_ERROR;
reader->state = XML_TEXTREADER_ERROR;
return(-1);
}
}
reader->node = NULL;
reader->depth = -1;
/*
* Cleanup of the old node
*/
if ((oldnode != NULL) && (reader->preserves == 0) &&
#ifdef LIBXML_XINCLUDE_ENABLED
(reader->in_xinclude == 0) &&
#endif
(reader->entNr == 0) &&
(oldnode->type != XML_DTD_NODE) &&
((oldnode->extra & NODE_IS_PRESERVED) == 0)) {
xmlUnlinkNode(oldnode);
xmlTextReaderFreeNode(reader, oldnode);
}
goto node_end;
}
if ((reader->preserves == 0) &&
#ifdef LIBXML_XINCLUDE_ENABLED
(reader->in_xinclude == 0) &&
#endif
(reader->entNr == 0) &&
(reader->node->last != NULL) &&
((reader->node->last->extra & NODE_IS_PRESERVED) == 0)) {
xmlNodePtr tmp = reader->node->last;
xmlUnlinkNode(tmp);
xmlTextReaderFreeNode(reader, tmp);
}
reader->depth--;
reader->state = XML_TEXTREADER_BACKTRACK;
node_found:
/*
* If we are in the middle of a piece of CDATA make sure it's finished
*/
if ((reader->node != NULL) &&
(reader->node->next == NULL) &&
((reader->node->type == XML_TEXT_NODE) ||
(reader->node->type == XML_CDATA_SECTION_NODE))) {
if (xmlTextReaderExpand(reader) == NULL)
return -1;
}
#ifdef LIBXML_XINCLUDE_ENABLED
/*
* Handle XInclude if asked for
*/
if ((reader->xinclude) && (reader->in_xinclude == 0) &&
(reader->state != XML_TEXTREADER_BACKTRACK) &&
(reader->node != NULL) &&
(reader->node->type == XML_ELEMENT_NODE) &&
(reader->node->ns != NULL) &&
((xmlStrEqual(reader->node->ns->href, XINCLUDE_NS)) ||
(xmlStrEqual(reader->node->ns->href, XINCLUDE_OLD_NS)))) {
if (reader->xincctxt == NULL) {
reader->xincctxt = xmlXIncludeNewContext(reader->ctxt->myDoc);
if (reader->xincctxt == NULL) {
xmlTextReaderErrMemory(reader);
return(-1);
}
xmlXIncludeSetFlags(reader->xincctxt,
reader->parserFlags & (~XML_PARSE_NOXINCNODE));
xmlXIncludeSetStreamingMode(reader->xincctxt, 1);
if ((reader->errorFunc != NULL) || (reader->sErrorFunc != NULL))
xmlXIncludeSetErrorHandler(reader->xincctxt,
xmlTextReaderStructuredRelay, reader);
}
/*
* expand that node and process it
*/
if (xmlTextReaderExpand(reader) == NULL)
return(-1);
if (xmlXIncludeProcessNode(reader->xincctxt, reader->node) < 0) {
int err = xmlXIncludeGetLastError(reader->xincctxt);
if (err == XML_ERR_NO_MEMORY)
xmlTextReaderErrMemory(reader);
return(-1);
}
}
if ((reader->node != NULL) && (reader->node->type == XML_XINCLUDE_START)) {
reader->in_xinclude++;
goto get_next_node;
}
if ((reader->node != NULL) && (reader->node->type == XML_XINCLUDE_END)) {
reader->in_xinclude--;
goto get_next_node;
}
#endif
/*
* Handle entities enter and exit when in entity replacement mode
*/
if ((reader->node != NULL) &&
(reader->node->type == XML_ENTITY_REF_NODE) &&
(reader->ctxt != NULL) && (reader->ctxt->replaceEntities == 1)) {
if ((reader->node->children != NULL) &&
(reader->node->children->type == XML_ENTITY_DECL) &&
(reader->node->children->children != NULL)) {
if (xmlTextReaderEntPush(reader, reader->node) < 0)
goto get_next_node;
reader->node = reader->node->children->children;
}
#ifdef LIBXML_REGEXP_ENABLED
} else if ((reader->node != NULL) &&
(reader->node->type == XML_ENTITY_REF_NODE) &&
(reader->ctxt != NULL) && (reader->validate)) {
if (xmlTextReaderValidateEntity(reader) < 0)
return(-1);
#endif /* LIBXML_REGEXP_ENABLED */
}
if ((reader->node != NULL) &&
(reader->node->type == XML_ENTITY_DECL) &&
(reader->ent != NULL) && (reader->ent->children == reader->node)) {
reader->node = xmlTextReaderEntPop(reader);
reader->depth++;
goto get_next_node;
}
#ifdef LIBXML_REGEXP_ENABLED
if ((reader->validate != XML_TEXTREADER_NOT_VALIDATE) && (reader->node != NULL)) {
xmlNodePtr node = reader->node;
if ((node->type == XML_ELEMENT_NODE) &&
((reader->state != XML_TEXTREADER_END) &&
(reader->state != XML_TEXTREADER_BACKTRACK))) {
if (xmlTextReaderValidatePush(reader) < 0)
return(-1);
} else if ((node->type == XML_TEXT_NODE) ||
(node->type == XML_CDATA_SECTION_NODE)) {
xmlTextReaderValidateCData(reader, node->content,
xmlStrlen(node->content));
}
}
#endif /* LIBXML_REGEXP_ENABLED */
#ifdef LIBXML_PATTERN_ENABLED
if ((reader->patternNr > 0) && (reader->state != XML_TEXTREADER_END) &&
(reader->state != XML_TEXTREADER_BACKTRACK)) {
int i;
for (i = 0;i < reader->patternNr;i++) {
if (xmlPatternMatch(reader->patternTab[i], reader->node) == 1) {
xmlTextReaderPreserve(reader);
break;
}
}
}
#endif /* LIBXML_PATTERN_ENABLED */
#ifdef LIBXML_SCHEMAS_ENABLED
if ((reader->validate == XML_TEXTREADER_VALIDATE_XSD) &&
(reader->xsdValidErrors == 0) &&
(reader->xsdValidCtxt != NULL)) {
reader->xsdValidErrors = !xmlSchemaIsValid(reader->xsdValidCtxt);
}
#endif /* LIBXML_PATTERN_ENABLED */
return(1);
node_end:
reader->state = XML_TEXTREADER_DONE;
return(0);
}
/**
* xmlTextReaderReadState:
* @reader: the xmlTextReaderPtr used
*
* Gets the read state of the reader.
*
* Returns the state value, or -1 in case of error
*/
int
xmlTextReaderReadState(xmlTextReaderPtr reader) {
if (reader == NULL)
return(-1);
return(reader->mode);
}
/**
* xmlTextReaderExpand:
* @reader: the xmlTextReaderPtr used
*
* Reads the contents of the current node and the full subtree. It then makes
* the subtree available until the next xmlTextReaderRead() call
*
* Returns a node pointer valid until the next xmlTextReaderRead() call
* or NULL in case of error.
*/
xmlNodePtr
xmlTextReaderExpand(xmlTextReaderPtr reader) {
if ((reader == NULL) || (reader->node == NULL))
return(NULL);
if (reader->doc != NULL)
return(reader->node);
if (reader->ctxt == NULL)
return(NULL);
if (xmlTextReaderDoExpand(reader) < 0)
return(NULL);
return(reader->node);
}
/**
* xmlTextReaderNext:
* @reader: the xmlTextReaderPtr used
*
* Skip to the node following the current one in document order while
* avoiding the subtree if any.
*
* Returns 1 if the node was read successfully, 0 if there is no more
* nodes to read, or -1 in case of error
*/
int
xmlTextReaderNext(xmlTextReaderPtr reader) {
int ret;
xmlNodePtr cur;
if (reader == NULL)
return(-1);
if (reader->doc != NULL)
return(xmlTextReaderNextTree(reader));
cur = reader->node;
if ((cur == NULL) || (cur->type != XML_ELEMENT_NODE))
return(xmlTextReaderRead(reader));
if (reader->state == XML_TEXTREADER_END || reader->state == XML_TEXTREADER_BACKTRACK)
return(xmlTextReaderRead(reader));
if (cur->extra & NODE_IS_EMPTY)
return(xmlTextReaderRead(reader));
do {
ret = xmlTextReaderRead(reader);
if (ret != 1)
return(ret);
} while (reader->node != cur);
return(xmlTextReaderRead(reader));
}
#ifdef LIBXML_WRITER_ENABLED
static void
xmlTextReaderDumpCopy(xmlTextReaderPtr reader, xmlOutputBufferPtr output,
xmlNodePtr node) {
if ((node->type == XML_DTD_NODE) ||
(node->type == XML_ELEMENT_DECL) ||
(node->type == XML_ATTRIBUTE_DECL) ||
(node->type == XML_ENTITY_DECL))
return;
if ((node->type == XML_DOCUMENT_NODE) ||
(node->type == XML_HTML_DOCUMENT_NODE)) {
xmlNodeDumpOutput(output, node->doc, node, 0, 0, NULL);
} else {
xmlNodePtr copy;
/*
* Create a copy to make sure that namespace declarations from
* ancestors are added.
*/
copy = xmlDocCopyNode(node, node->doc, 1);
if (copy == NULL) {
xmlTextReaderErrMemory(reader);
return;
}
xmlNodeDumpOutput(output, copy->doc, copy, 0, 0, NULL);
xmlFreeNode(copy);
}
}
/**
* xmlTextReaderReadInnerXml:
* @reader: the xmlTextReaderPtr used
*
* Reads the contents of the current node, including child nodes and markup.
*
* Returns a string containing the XML content, or NULL if the current node
* is neither an element nor attribute, or has no child nodes. The
* string must be deallocated by the caller.
*/
xmlChar *
xmlTextReaderReadInnerXml(xmlTextReaderPtr reader)
{
xmlOutputBufferPtr output;
xmlNodePtr cur;
xmlChar *ret;
if (xmlTextReaderExpand(reader) == NULL)
return(NULL);
if (reader->node == NULL)
return(NULL);
output = xmlAllocOutputBuffer(NULL);
if (output == NULL) {
xmlTextReaderErrMemory(reader);
return(NULL);
}
for (cur = reader->node->children; cur != NULL; cur = cur->next)
xmlTextReaderDumpCopy(reader, output, cur);
if (output->error)
xmlCtxtErrIO(reader->ctxt, output->error, NULL);
ret = xmlBufDetach(output->buffer);
xmlOutputBufferClose(output);
return(ret);
}
/**
* xmlTextReaderReadOuterXml:
* @reader: the xmlTextReaderPtr used
*
* Reads the contents of the current node, including child nodes and markup.
*
* Returns a string containing the node and any XML content, or NULL if the
* current node cannot be serialized. The string must be deallocated
* by the caller.
*/
xmlChar *
xmlTextReaderReadOuterXml(xmlTextReaderPtr reader)
{
xmlOutputBufferPtr output;
xmlNodePtr node;
xmlChar *ret;
if (xmlTextReaderExpand(reader) == NULL)
return(NULL);
node = reader->node;
if (node == NULL)
return(NULL);
output = xmlAllocOutputBuffer(NULL);
if (output == NULL) {
xmlTextReaderErrMemory(reader);
return(NULL);
}
xmlTextReaderDumpCopy(reader, output, node);
if (output->error)
xmlCtxtErrIO(reader->ctxt, output->error, NULL);
ret = xmlBufDetach(output->buffer);
xmlOutputBufferClose(output);
return(ret);
}
#endif
/**
* xmlTextReaderReadString:
* @reader: the xmlTextReaderPtr used
*
* Reads the contents of an element or a text node as a string.
*
* Returns a string containing the contents of the Element or Text node,
* or NULL if the reader is positioned on any other type of node.
* The string must be deallocated by the caller.
*/
xmlChar *
xmlTextReaderReadString(xmlTextReaderPtr reader)
{
xmlNodePtr node, cur;
xmlBufPtr buf;
xmlChar *ret;
if ((reader == NULL) || (reader->node == NULL))
return(NULL);
node = (reader->curnode != NULL) ? reader->curnode : reader->node;
switch (node->type) {
case XML_TEXT_NODE:
case XML_CDATA_SECTION_NODE:
case XML_ELEMENT_NODE:
break;
case XML_ATTRIBUTE_NODE:
/* TODO */
break;
default:
break;
}
buf = xmlBufCreateSize(30);
if (buf == NULL) {
xmlTextReaderErrMemory(reader);
return(NULL);
}
xmlBufSetAllocationScheme(buf, XML_BUFFER_ALLOC_DOUBLEIT);
cur = node;
while (cur != NULL) {
switch (cur->type) {
case XML_TEXT_NODE:
case XML_CDATA_SECTION_NODE:
xmlBufCat(buf, cur->content);
break;
case XML_ELEMENT_NODE:
if (cur->children != NULL) {
cur = cur->children;
continue;
}
break;
default:
break;
}
if (cur == node)
goto done;
while (cur->next == NULL) {
cur = cur->parent;
if (cur == node)
goto done;
}
cur = cur->next;
}
done:
ret = xmlBufDetach(buf);
if (ret == NULL)
xmlTextReaderErrMemory(reader);
xmlBufFree(buf);
return(ret);
}
#if 0
/**
* xmlTextReaderReadBase64:
* @reader: the xmlTextReaderPtr used
* @array: a byte array to store the content.
* @offset: the zero-based index into array where the method should
* begin to write.
* @len: the number of bytes to write.
*
* Reads and decodes the Base64 encoded contents of an element and
* stores the result in a byte buffer.
*
* Returns the number of bytes written to array, or zero if the current
* instance is not positioned on an element or -1 in case of error.
*/
int
xmlTextReaderReadBase64(xmlTextReaderPtr reader,
unsigned char *array ATTRIBUTE_UNUSED,
int offset ATTRIBUTE_UNUSED,
int len ATTRIBUTE_UNUSED) {
if ((reader == NULL) || (reader->ctxt == NULL))
return(-1);
if (reader->ctxt->wellFormed != 1)
return(-1);
if ((reader->node == NULL) || (reader->node->type == XML_ELEMENT_NODE))
return(0);
return(0);
}
/**
* xmlTextReaderReadBinHex:
* @reader: the xmlTextReaderPtr used
* @array: a byte array to store the content.
* @offset: the zero-based index into array where the method should
* begin to write.
* @len: the number of bytes to write.
*
* Reads and decodes the BinHex encoded contents of an element and
* stores the result in a byte buffer.
*
* Returns the number of bytes written to array, or zero if the current
* instance is not positioned on an element or -1 in case of error.
*/
int
xmlTextReaderReadBinHex(xmlTextReaderPtr reader,
unsigned char *array ATTRIBUTE_UNUSED,
int offset ATTRIBUTE_UNUSED,
int len ATTRIBUTE_UNUSED) {
if ((reader == NULL) || (reader->ctxt == NULL))
return(-1);
if (reader->ctxt->wellFormed != 1)
return(-1);
if ((reader->node == NULL) || (reader->node->type == XML_ELEMENT_NODE))
return(0);
return(0);
}
#endif
/************************************************************************
* *
* Operating on a preparsed tree *
* *
************************************************************************/
static int
xmlTextReaderNextTree(xmlTextReaderPtr reader)
{
if (reader == NULL)
return(-1);
if (reader->state == XML_TEXTREADER_END)
return(0);
if (reader->node == NULL) {
if (reader->doc->children == NULL) {
reader->state = XML_TEXTREADER_END;
return(0);
}
reader->node = reader->doc->children;
reader->state = XML_TEXTREADER_START;
return(1);
}
if (reader->state != XML_TEXTREADER_BACKTRACK) {
/* Here removed traversal to child, because we want to skip the subtree,
replace with traversal to sibling to skip subtree */
if (reader->node->next != 0) {
/* Move to sibling if present,skipping sub-tree */
reader->node = reader->node->next;
reader->state = XML_TEXTREADER_START;
return(1);
}
/* if reader->node->next is NULL mean no subtree for current node,
so need to move to sibling of parent node if present */
reader->state = XML_TEXTREADER_BACKTRACK;
/* This will move to parent if present */
xmlTextReaderRead(reader);
}
if (reader->node->next != 0) {
reader->node = reader->node->next;
reader->state = XML_TEXTREADER_START;
return(1);
}
if (reader->node->parent != 0) {
if (reader->node->parent->type == XML_DOCUMENT_NODE) {
reader->state = XML_TEXTREADER_END;
return(0);
}
reader->node = reader->node->parent;
reader->depth--;
reader->state = XML_TEXTREADER_BACKTRACK;
/* Repeat process to move to sibling of parent node if present */
xmlTextReaderNextTree(reader);
}
reader->state = XML_TEXTREADER_END;
return(1);
}
/**
* xmlTextReaderReadTree:
* @reader: the xmlTextReaderPtr used
*
* Moves the position of the current instance to the next node in
* the stream, exposing its properties.
*
* Returns 1 if the node was read successfully, 0 if there is no more
* nodes to read, or -1 in case of error
*/
static int
xmlTextReaderReadTree(xmlTextReaderPtr reader) {
if (reader->state == XML_TEXTREADER_END)
return(0);
next_node:
if (reader->node == NULL) {
if (reader->doc->children == NULL) {
reader->state = XML_TEXTREADER_END;
return(0);
}
reader->node = reader->doc->children;
reader->state = XML_TEXTREADER_START;
goto found_node;
}
if ((reader->state != XML_TEXTREADER_BACKTRACK) &&
(reader->node->type != XML_DTD_NODE) &&
(reader->node->type != XML_XINCLUDE_START) &&
(reader->node->type != XML_ENTITY_REF_NODE)) {
if (reader->node->children != NULL) {
reader->node = reader->node->children;
reader->depth++;
reader->state = XML_TEXTREADER_START;
goto found_node;
}
if (reader->node->type == XML_ATTRIBUTE_NODE) {
reader->state = XML_TEXTREADER_BACKTRACK;
goto found_node;
}
}
if (reader->node->next != NULL) {
reader->node = reader->node->next;
reader->state = XML_TEXTREADER_START;
goto found_node;
}
if (reader->node->parent != NULL) {
if ((reader->node->parent->type == XML_DOCUMENT_NODE) ||
(reader->node->parent->type == XML_HTML_DOCUMENT_NODE)) {
reader->state = XML_TEXTREADER_END;
return(0);
}
reader->node = reader->node->parent;
reader->depth--;
reader->state = XML_TEXTREADER_BACKTRACK;
goto found_node;
}
reader->state = XML_TEXTREADER_END;
found_node:
if ((reader->node->type == XML_XINCLUDE_START) ||
(reader->node->type == XML_XINCLUDE_END))
goto next_node;
return(1);
}
/**
* xmlTextReaderNextSibling:
* @reader: the xmlTextReaderPtr used
*
* Skip to the node following the current one in document order while
* avoiding the subtree if any.
* Currently implemented only for Readers built on a document
*
* Returns 1 if the node was read successfully, 0 if there is no more
* nodes to read, or -1 in case of error
*/
int
xmlTextReaderNextSibling(xmlTextReaderPtr reader) {
if (reader == NULL)
return(-1);
if (reader->doc == NULL) {
/* TODO */
return(-1);
}
if (reader->state == XML_TEXTREADER_END)
return(0);
if (reader->node == NULL)
return(xmlTextReaderNextTree(reader));
if (reader->node->next != NULL) {
reader->node = reader->node->next;
reader->state = XML_TEXTREADER_START;
return(1);
}
return(0);
}
/************************************************************************
* *
* Constructor and destructors *
* *
************************************************************************/
/**
* xmlNewTextReader:
* @input: the xmlParserInputBufferPtr used to read data
* @URI: the URI information for the source if available
*
* Create an xmlTextReader structure fed with @input
*
* Returns the new xmlTextReaderPtr or NULL in case of error
*/
xmlTextReaderPtr
xmlNewTextReader(xmlParserInputBufferPtr input, const char *URI) {
xmlTextReaderPtr ret;
if (input == NULL)
return(NULL);
ret = xmlMalloc(sizeof(xmlTextReader));
if (ret == NULL)
return(NULL);
memset(ret, 0, sizeof(xmlTextReader));
ret->doc = NULL;
ret->entTab = NULL;
ret->entMax = 0;
ret->entNr = 0;
ret->input = input;
ret->buffer = xmlBufCreateSize(100);
if (ret->buffer == NULL) {
xmlFree(ret);
return(NULL);
}
/* no operation on a reader should require a huge buffer */
xmlBufSetAllocationScheme(ret->buffer,
XML_BUFFER_ALLOC_DOUBLEIT);
ret->sax = (xmlSAXHandler *) xmlMalloc(sizeof(xmlSAXHandler));
if (ret->sax == NULL) {
xmlBufFree(ret->buffer);
xmlFree(ret);
return(NULL);
}
xmlSAXVersion(ret->sax, 2);
ret->startElement = ret->sax->startElement;
ret->sax->startElement = xmlTextReaderStartElement;
ret->endElement = ret->sax->endElement;
ret->sax->endElement = xmlTextReaderEndElement;
#ifdef LIBXML_SAX1_ENABLED
if (ret->sax->initialized == XML_SAX2_MAGIC) {
#endif /* LIBXML_SAX1_ENABLED */
ret->startElementNs = ret->sax->startElementNs;
ret->sax->startElementNs = xmlTextReaderStartElementNs;
ret->endElementNs = ret->sax->endElementNs;
ret->sax->endElementNs = xmlTextReaderEndElementNs;
#ifdef LIBXML_SAX1_ENABLED
} else {
ret->startElementNs = NULL;
ret->endElementNs = NULL;
}
#endif /* LIBXML_SAX1_ENABLED */
ret->characters = ret->sax->characters;
ret->sax->characters = xmlTextReaderCharacters;
ret->sax->ignorableWhitespace = xmlTextReaderCharacters;
ret->cdataBlock = ret->sax->cdataBlock;
ret->sax->cdataBlock = xmlTextReaderCDataBlock;
ret->mode = XML_TEXTREADER_MODE_INITIAL;
ret->node = NULL;
ret->curnode = NULL;
if (xmlBufUse(ret->input->buffer) < 4) {
xmlParserInputBufferRead(input, 4);
}
if (xmlBufUse(ret->input->buffer) >= 4) {
ret->ctxt = xmlCreatePushParserCtxt(ret->sax, NULL,
(const char *) xmlBufContent(ret->input->buffer),
4, URI);
ret->base = 0;
ret->cur = 4;
} else {
ret->ctxt = xmlCreatePushParserCtxt(ret->sax, NULL, NULL, 0, URI);
ret->base = 0;
ret->cur = 0;
}
if (ret->ctxt == NULL) {
xmlBufFree(ret->buffer);
xmlFree(ret->sax);
xmlFree(ret);
return(NULL);
}
ret->ctxt->parseMode = XML_PARSE_READER;
ret->ctxt->_private = ret;
ret->ctxt->linenumbers = 1;
ret->ctxt->dictNames = 1;
ret->allocs = XML_TEXTREADER_CTXT;
/*
* use the parser dictionary to allocate all elements and attributes names
*/
ret->dict = ret->ctxt->dict;
#ifdef LIBXML_XINCLUDE_ENABLED
ret->xinclude = 0;
#endif
#ifdef LIBXML_PATTERN_ENABLED
ret->patternMax = 0;
ret->patternTab = NULL;
#endif
return(ret);
}
/**
* xmlNewTextReaderFilename:
* @URI: the URI of the resource to process
*
* Create an xmlTextReader structure fed with the resource at @URI
*
* Returns the new xmlTextReaderPtr or NULL in case of error
*/
xmlTextReaderPtr
xmlNewTextReaderFilename(const char *URI) {
xmlParserInputBufferPtr input;
xmlTextReaderPtr ret;
input = xmlParserInputBufferCreateFilename(URI, XML_CHAR_ENCODING_NONE);
if (input == NULL)
return(NULL);
ret = xmlNewTextReader(input, URI);
if (ret == NULL) {
xmlFreeParserInputBuffer(input);
return(NULL);
}
ret->allocs |= XML_TEXTREADER_INPUT;
return(ret);
}
/**
* xmlFreeTextReader:
* @reader: the xmlTextReaderPtr
*
* Deallocate all the resources associated to the reader
*/
void
xmlFreeTextReader(xmlTextReaderPtr reader) {
if (reader == NULL)
return;
#ifdef LIBXML_SCHEMAS_ENABLED
if (reader->rngSchemas != NULL) {
xmlRelaxNGFree(reader->rngSchemas);
reader->rngSchemas = NULL;
}
if (reader->rngValidCtxt != NULL) {
if (! reader->rngPreserveCtxt)
xmlRelaxNGFreeValidCtxt(reader->rngValidCtxt);
reader->rngValidCtxt = NULL;
}
if (reader->xsdPlug != NULL) {
xmlSchemaSAXUnplug(reader->xsdPlug);
reader->xsdPlug = NULL;
}
if (reader->xsdValidCtxt != NULL) {
if (! reader->xsdPreserveCtxt)
xmlSchemaFreeValidCtxt(reader->xsdValidCtxt);
reader->xsdValidCtxt = NULL;
}
if (reader->xsdSchemas != NULL) {
xmlSchemaFree(reader->xsdSchemas);
reader->xsdSchemas = NULL;
}
#endif
#ifdef LIBXML_XINCLUDE_ENABLED
if (reader->xincctxt != NULL)
xmlXIncludeFreeContext(reader->xincctxt);
#endif
#ifdef LIBXML_PATTERN_ENABLED
if (reader->patternTab != NULL) {
int i;
for (i = 0;i < reader->patternNr;i++) {
if (reader->patternTab[i] != NULL)
xmlFreePattern(reader->patternTab[i]);
}
xmlFree(reader->patternTab);
}
#endif
if (reader->mode != XML_TEXTREADER_MODE_CLOSED)
xmlTextReaderClose(reader);
if (reader->ctxt != NULL) {
if (reader->dict == reader->ctxt->dict)
reader->dict = NULL;
if (reader->allocs & XML_TEXTREADER_CTXT)
xmlFreeParserCtxt(reader->ctxt);
}
if (reader->sax != NULL)
xmlFree(reader->sax);
if (reader->buffer != NULL)
xmlBufFree(reader->buffer);
if (reader->entTab != NULL)
xmlFree(reader->entTab);
if (reader->dict != NULL)
xmlDictFree(reader->dict);
xmlFree(reader);
}
/************************************************************************
* *
* Methods for XmlTextReader *
* *
************************************************************************/
/**
* xmlTextReaderClose:
* @reader: the xmlTextReaderPtr used
*
* This method releases any resources allocated by the current instance
* changes the state to Closed and close any underlying input.
*
* Returns 0 or -1 in case of error
*/
int
xmlTextReaderClose(xmlTextReaderPtr reader) {
if (reader == NULL)
return(-1);
reader->node = NULL;
reader->curnode = NULL;
reader->mode = XML_TEXTREADER_MODE_CLOSED;
if (reader->faketext != NULL) {
xmlFreeNode(reader->faketext);
reader->faketext = NULL;
}
if (reader->ctxt != NULL) {
#ifdef LIBXML_VALID_ENABLED
if ((reader->ctxt->vctxt.vstateTab != NULL) &&
(reader->ctxt->vctxt.vstateMax > 0)){
#ifdef LIBXML_REGEXP_ENABLED
while (reader->ctxt->vctxt.vstateNr > 0)
xmlValidatePopElement(&reader->ctxt->vctxt, NULL, NULL, NULL);
#endif /* LIBXML_REGEXP_ENABLED */
xmlFree(reader->ctxt->vctxt.vstateTab);
reader->ctxt->vctxt.vstateTab = NULL;
reader->ctxt->vctxt.vstateMax = 0;
}
#endif /* LIBXML_VALID_ENABLED */
xmlStopParser(reader->ctxt);
if (reader->ctxt->myDoc != NULL) {
if (reader->preserve == 0)
xmlTextReaderFreeDoc(reader, reader->ctxt->myDoc);
reader->ctxt->myDoc = NULL;
}
}
if ((reader->input != NULL) && (reader->allocs & XML_TEXTREADER_INPUT)) {
xmlFreeParserInputBuffer(reader->input);
reader->allocs -= XML_TEXTREADER_INPUT;
}
return(0);
}
/**
* xmlTextReaderGetAttributeNo:
* @reader: the xmlTextReaderPtr used
* @no: the zero-based index of the attribute relative to the containing element
*
* Provides the value of the attribute with the specified index relative
* to the containing element.
*
* Returns a string containing the value of the specified attribute, or NULL
* in case of error. The string must be deallocated by the caller.
*/
xmlChar *
xmlTextReaderGetAttributeNo(xmlTextReaderPtr reader, int no) {
xmlChar *ret;
int i;
xmlAttrPtr cur;
xmlNsPtr ns;
if (reader == NULL)
return(NULL);
if (reader->node == NULL)
return(NULL);
if (reader->curnode != NULL)
return(NULL);
/* TODO: handle the xmlDecl */
if (reader->node->type != XML_ELEMENT_NODE)
return(NULL);
ns = reader->node->nsDef;
for (i = 0;(i < no) && (ns != NULL);i++) {
ns = ns->next;
}
if (ns != NULL)
return(readerStrdup(reader, ns->href));
cur = reader->node->properties;
if (cur == NULL)
return(NULL);
for (;i < no;i++) {
cur = cur->next;
if (cur == NULL)
return(NULL);
}
/* TODO walk the DTD if present */
ret = xmlNodeListGetString(reader->node->doc, cur->children, 1);
if (ret == NULL)
xmlTextReaderErrMemory(reader);
return(ret);
}
/**
* xmlTextReaderGetAttribute:
* @reader: the xmlTextReaderPtr used
* @name: the qualified name of the attribute.
*
* Provides the value of the attribute with the specified qualified name.
*
* Returns a string containing the value of the specified attribute, or NULL
* in case of error. The string must be deallocated by the caller.
*/
xmlChar *
xmlTextReaderGetAttribute(xmlTextReaderPtr reader, const xmlChar *name) {
xmlChar *prefix = NULL;
const xmlChar *localname;
xmlNsPtr ns;
xmlChar *ret = NULL;
int result;
if ((reader == NULL) || (name == NULL))
return(NULL);
if (reader->node == NULL)
return(NULL);
if (reader->curnode != NULL)
return(NULL);
/* TODO: handle the xmlDecl */
if (reader->node->type != XML_ELEMENT_NODE)
return(NULL);
localname = xmlSplitQName4(name, &prefix);
if (localname == NULL) {
xmlTextReaderErrMemory(reader);
return(NULL);
}
if (prefix == NULL) {
/*
* Namespace default decl
*/
if (xmlStrEqual(name, BAD_CAST "xmlns")) {
ns = reader->node->nsDef;
while (ns != NULL) {
if (ns->prefix == NULL) {
return(readerStrdup(reader, ns->href));
}
ns = ns->next;
}
return NULL;
}
result = xmlNodeGetAttrValue(reader->node, name, NULL, &ret);
if (result < 0)
xmlTextReaderErrMemory(reader);
return(ret);
}
/*
* Namespace default decl
*/
if (xmlStrEqual(prefix, BAD_CAST "xmlns")) {
ns = reader->node->nsDef;
while (ns != NULL) {
if ((ns->prefix != NULL) && (xmlStrEqual(ns->prefix, localname))) {
ret = readerStrdup(reader, ns->href);
break;
}
ns = ns->next;
}
} else {
result = xmlSearchNsSafe(reader->node, prefix, &ns);
if (result < 0)
xmlTextReaderErrMemory(reader);
if (ns != NULL) {
result = xmlNodeGetAttrValue(reader->node, localname, ns->href,
&ret);
if (result < 0)
xmlTextReaderErrMemory(reader);
}
}
if (prefix != NULL)
xmlFree(prefix);
return(ret);
}
/**
* xmlTextReaderGetAttributeNs:
* @reader: the xmlTextReaderPtr used
* @localName: the local name of the attribute.
* @namespaceURI: the namespace URI of the attribute.
*
* Provides the value of the specified attribute
*
* Returns a string containing the value of the specified attribute, or NULL
* in case of error. The string must be deallocated by the caller.
*/
xmlChar *
xmlTextReaderGetAttributeNs(xmlTextReaderPtr reader, const xmlChar *localName,
const xmlChar *namespaceURI) {
xmlChar *ret = NULL;
xmlChar *prefix = NULL;
xmlNsPtr ns;
int result;
if ((reader == NULL) || (localName == NULL))
return(NULL);
if (reader->node == NULL)
return(NULL);
if (reader->curnode != NULL)
return(NULL);
/* TODO: handle the xmlDecl */
if (reader->node->type != XML_ELEMENT_NODE)
return(NULL);
if (xmlStrEqual(namespaceURI, BAD_CAST "http://www.w3.org/2000/xmlns/")) {
if (! xmlStrEqual(localName, BAD_CAST "xmlns")) {
prefix = BAD_CAST localName;
}
ns = reader->node->nsDef;
while (ns != NULL) {
if ((prefix == NULL && ns->prefix == NULL) ||
((ns->prefix != NULL) && (xmlStrEqual(ns->prefix, localName)))) {
return readerStrdup(reader, ns->href);
}
ns = ns->next;
}
return NULL;
}
result = xmlNodeGetAttrValue(reader->node, localName, namespaceURI, &ret);
if (result < 0)
xmlTextReaderErrMemory(reader);
return(ret);
}
/**
* xmlTextReaderGetRemainder:
* @reader: the xmlTextReaderPtr used
*
* Method to get the remainder of the buffered XML. this method stops the
* parser, set its state to End Of File and return the input stream with
* what is left that the parser did not use.
*
* The implementation is not good, the parser certainly progressed past
* what's left in reader->input, and there is an allocation problem. Best
* would be to rewrite it differently.
*
* Returns the xmlParserInputBufferPtr attached to the XML or NULL
* in case of error.
*/
xmlParserInputBufferPtr
xmlTextReaderGetRemainder(xmlTextReaderPtr reader) {
xmlParserInputBufferPtr ret = NULL;
if (reader == NULL)
return(NULL);
if (reader->node == NULL)
return(NULL);
reader->node = NULL;
reader->curnode = NULL;
reader->mode = XML_TEXTREADER_MODE_EOF;
if (reader->ctxt != NULL) {
xmlStopParser(reader->ctxt);
if (reader->ctxt->myDoc != NULL) {
if (reader->preserve == 0)
xmlTextReaderFreeDoc(reader, reader->ctxt->myDoc);
reader->ctxt->myDoc = NULL;
}
}
if (reader->allocs & XML_TEXTREADER_INPUT) {
ret = reader->input;
reader->input = NULL;
reader->allocs -= XML_TEXTREADER_INPUT;
} else {
/*
* Hum, one may need to duplicate the data structure because
* without reference counting the input may be freed twice:
* - by the layer which allocated it.
* - by the layer to which would have been returned to.
*/
return(NULL);
}
return(ret);
}
/**
* xmlTextReaderLookupNamespace:
* @reader: the xmlTextReaderPtr used
* @prefix: the prefix whose namespace URI is to be resolved. To return
* the default namespace, specify NULL
*
* Resolves a namespace prefix in the scope of the current element.
*
* Returns a string containing the namespace URI to which the prefix maps
* or NULL in case of error. The string must be deallocated by the caller.
*/
xmlChar *
xmlTextReaderLookupNamespace(xmlTextReaderPtr reader, const xmlChar *prefix) {
xmlNsPtr ns;
int result;
if (reader == NULL)
return(NULL);
if (reader->node == NULL)
return(NULL);
result = xmlSearchNsSafe(reader->node, prefix, &ns);
if (result < 0) {
xmlTextReaderErrMemory(reader);
return(NULL);
}
if (ns == NULL)
return(NULL);
return(readerStrdup(reader, ns->href));
}
/**
* xmlTextReaderMoveToAttributeNo:
* @reader: the xmlTextReaderPtr used
* @no: the zero-based index of the attribute relative to the containing
* element.
*
* Moves the position of the current instance to the attribute with
* the specified index relative to the containing element.
*
* Returns 1 in case of success, -1 in case of error, 0 if not found
*/
int
xmlTextReaderMoveToAttributeNo(xmlTextReaderPtr reader, int no) {
int i;
xmlAttrPtr cur;
xmlNsPtr ns;
if (reader == NULL)
return(-1);
if (reader->node == NULL)
return(-1);
/* TODO: handle the xmlDecl */
if (reader->node->type != XML_ELEMENT_NODE)
return(-1);
reader->curnode = NULL;
ns = reader->node->nsDef;
for (i = 0;(i < no) && (ns != NULL);i++) {
ns = ns->next;
}
if (ns != NULL) {
reader->curnode = (xmlNodePtr) ns;
return(1);
}
cur = reader->node->properties;
if (cur == NULL)
return(0);
for (;i < no;i++) {
cur = cur->next;
if (cur == NULL)
return(0);
}
/* TODO walk the DTD if present */
reader->curnode = (xmlNodePtr) cur;
return(1);
}
/**
* xmlTextReaderMoveToAttribute:
* @reader: the xmlTextReaderPtr used
* @name: the qualified name of the attribute.
*
* Moves the position of the current instance to the attribute with
* the specified qualified name.
*
* Returns 1 in case of success, -1 in case of error, 0 if not found
*/
int
xmlTextReaderMoveToAttribute(xmlTextReaderPtr reader, const xmlChar *name) {
xmlChar *prefix = NULL;
const xmlChar *localname;
xmlNsPtr ns;
xmlAttrPtr prop;
if ((reader == NULL) || (name == NULL))
return(-1);
if (reader->node == NULL)
return(-1);
/* TODO: handle the xmlDecl */
if (reader->node->type != XML_ELEMENT_NODE)
return(0);
localname = xmlSplitQName4(name, &prefix);
if (localname == NULL) {
xmlTextReaderErrMemory(reader);
return(-1);
}
if (prefix == NULL) {
/*
* Namespace default decl
*/
if (xmlStrEqual(name, BAD_CAST "xmlns")) {
ns = reader->node->nsDef;
while (ns != NULL) {
if (ns->prefix == NULL) {
reader->curnode = (xmlNodePtr) ns;
return(1);
}
ns = ns->next;
}
return(0);
}
prop = reader->node->properties;
while (prop != NULL) {
/*
* One need to have
* - same attribute names
* - and the attribute carrying that namespace
*/
if ((xmlStrEqual(prop->name, name)) &&
((prop->ns == NULL) || (prop->ns->prefix == NULL))) {
reader->curnode = (xmlNodePtr) prop;
return(1);
}
prop = prop->next;
}
return(0);
}
/*
* Namespace default decl
*/
if (xmlStrEqual(prefix, BAD_CAST "xmlns")) {
ns = reader->node->nsDef;
while (ns != NULL) {
if ((ns->prefix != NULL) && (xmlStrEqual(ns->prefix, localname))) {
reader->curnode = (xmlNodePtr) ns;
goto found;
}
ns = ns->next;
}
goto not_found;
}
prop = reader->node->properties;
while (prop != NULL) {
/*
* One need to have
* - same attribute names
* - and the attribute carrying that namespace
*/
if ((xmlStrEqual(prop->name, localname)) &&
(prop->ns != NULL) && (xmlStrEqual(prop->ns->prefix, prefix))) {
reader->curnode = (xmlNodePtr) prop;
goto found;
}
prop = prop->next;
}
not_found:
if (prefix != NULL)
xmlFree(prefix);
return(0);
found:
if (prefix != NULL)
xmlFree(prefix);
return(1);
}
/**
* xmlTextReaderMoveToAttributeNs:
* @reader: the xmlTextReaderPtr used
* @localName: the local name of the attribute.
* @namespaceURI: the namespace URI of the attribute.
*
* Moves the position of the current instance to the attribute with the
* specified local name and namespace URI.
*
* Returns 1 in case of success, -1 in case of error, 0 if not found
*/
int
xmlTextReaderMoveToAttributeNs(xmlTextReaderPtr reader,
const xmlChar *localName, const xmlChar *namespaceURI) {
xmlAttrPtr prop;
xmlNodePtr node;
xmlNsPtr ns;
xmlChar *prefix = NULL;
if ((reader == NULL) || (localName == NULL) || (namespaceURI == NULL))
return(-1);
if (reader->node == NULL)
return(-1);
if (reader->node->type != XML_ELEMENT_NODE)
return(0);
node = reader->node;
if (xmlStrEqual(namespaceURI, BAD_CAST "http://www.w3.org/2000/xmlns/")) {
if (! xmlStrEqual(localName, BAD_CAST "xmlns")) {
prefix = BAD_CAST localName;
}
ns = reader->node->nsDef;
while (ns != NULL) {
if ((prefix == NULL && ns->prefix == NULL) ||
((ns->prefix != NULL) && (xmlStrEqual(ns->prefix, localName)))) {
reader->curnode = (xmlNodePtr) ns;
return(1);
}
ns = ns->next;
}
return(0);
}
prop = node->properties;
while (prop != NULL) {
/*
* One need to have
* - same attribute names
* - and the attribute carrying that namespace
*/
if (xmlStrEqual(prop->name, localName) &&
((prop->ns != NULL) &&
(xmlStrEqual(prop->ns->href, namespaceURI)))) {
reader->curnode = (xmlNodePtr) prop;
return(1);
}
prop = prop->next;
}
return(0);
}
/**
* xmlTextReaderMoveToFirstAttribute:
* @reader: the xmlTextReaderPtr used
*
* Moves the position of the current instance to the first attribute
* associated with the current node.
*
* Returns 1 in case of success, -1 in case of error, 0 if not found
*/
int
xmlTextReaderMoveToFirstAttribute(xmlTextReaderPtr reader) {
if (reader == NULL)
return(-1);
if (reader->node == NULL)
return(-1);
if (reader->node->type != XML_ELEMENT_NODE)
return(0);
if (reader->node->nsDef != NULL) {
reader->curnode = (xmlNodePtr) reader->node->nsDef;
return(1);
}
if (reader->node->properties != NULL) {
reader->curnode = (xmlNodePtr) reader->node->properties;
return(1);
}
return(0);
}
/**
* xmlTextReaderMoveToNextAttribute:
* @reader: the xmlTextReaderPtr used
*
* Moves the position of the current instance to the next attribute
* associated with the current node.
*
* Returns 1 in case of success, -1 in case of error, 0 if not found
*/
int
xmlTextReaderMoveToNextAttribute(xmlTextReaderPtr reader) {
if (reader == NULL)
return(-1);
if (reader->node == NULL)
return(-1);
if (reader->node->type != XML_ELEMENT_NODE)
return(0);
if (reader->curnode == NULL)
return(xmlTextReaderMoveToFirstAttribute(reader));
if (reader->curnode->type == XML_NAMESPACE_DECL) {
xmlNsPtr ns = (xmlNsPtr) reader->curnode;
if (ns->next != NULL) {
reader->curnode = (xmlNodePtr) ns->next;
return(1);
}
if (reader->node->properties != NULL) {
reader->curnode = (xmlNodePtr) reader->node->properties;
return(1);
}
return(0);
} else if ((reader->curnode->type == XML_ATTRIBUTE_NODE) &&
(reader->curnode->next != NULL)) {
reader->curnode = reader->curnode->next;
return(1);
}
return(0);
}
/**
* xmlTextReaderMoveToElement:
* @reader: the xmlTextReaderPtr used
*
* Moves the position of the current instance to the node that
* contains the current Attribute node.
*
* Returns 1 in case of success, -1 in case of error, 0 if not moved
*/
int
xmlTextReaderMoveToElement(xmlTextReaderPtr reader) {
if (reader == NULL)
return(-1);
if (reader->node == NULL)
return(-1);
if (reader->node->type != XML_ELEMENT_NODE)
return(0);
if (reader->curnode != NULL) {
reader->curnode = NULL;
return(1);
}
return(0);
}
/**
* xmlTextReaderReadAttributeValue:
* @reader: the xmlTextReaderPtr used
*
* Parses an attribute value into one or more Text and EntityReference nodes.
*
* Returns 1 in case of success, 0 if the reader was not positioned on an
* attribute node or all the attribute values have been read, or -1
* in case of error.
*/
int
xmlTextReaderReadAttributeValue(xmlTextReaderPtr reader) {
if (reader == NULL)
return(-1);
if (reader->node == NULL)
return(-1);
if (reader->curnode == NULL)
return(0);
if (reader->curnode->type == XML_ATTRIBUTE_NODE) {
if (reader->curnode->children == NULL)
return(0);
reader->curnode = reader->curnode->children;
} else if (reader->curnode->type == XML_NAMESPACE_DECL) {
xmlNsPtr ns = (xmlNsPtr) reader->curnode;
if (reader->faketext == NULL) {
reader->faketext = xmlNewDocText(reader->node->doc,
ns->href);
if (reader->faketext == NULL) {
xmlTextReaderErrMemory(reader);
return(-1);
}
} else {
if ((reader->faketext->content != NULL) &&
(reader->faketext->content !=
(xmlChar *) &(reader->faketext->properties)))
xmlFree(reader->faketext->content);
if (ns->href == NULL) {
reader->faketext->content = NULL;
} else {
reader->faketext->content = xmlStrdup(ns->href);
if (reader->faketext->content == NULL) {
xmlTextReaderErrMemory(reader);
return(-1);
}
}
}
reader->curnode = reader->faketext;
} else {
if (reader->curnode->next == NULL)
return(0);
reader->curnode = reader->curnode->next;
}
return(1);
}
/**
* xmlTextReaderConstEncoding:
* @reader: the xmlTextReaderPtr used
*
* Determine the encoding of the document being read.
*
* Returns a string containing the encoding of the document or NULL in
* case of error. The string is deallocated with the reader.
*/
const xmlChar *
xmlTextReaderConstEncoding(xmlTextReaderPtr reader) {
const xmlChar *encoding = NULL;
if (reader == NULL)
return(NULL);
if (reader->ctxt != NULL)
encoding = xmlGetActualEncoding(reader->ctxt);
else if (reader->doc != NULL)
encoding = reader->doc->encoding;
return(constString(reader, encoding));
}
/************************************************************************
* *
* Access API to the current node *
* *
************************************************************************/
/**
* xmlTextReaderAttributeCount:
* @reader: the xmlTextReaderPtr used
*
* Provides the number of attributes of the current node
*
* Returns 0 i no attributes, -1 in case of error or the attribute count
*/
int
xmlTextReaderAttributeCount(xmlTextReaderPtr reader) {
int ret;
xmlAttrPtr attr;
xmlNsPtr ns;
xmlNodePtr node;
if (reader == NULL)
return(-1);
if (reader->node == NULL)
return(0);
if (reader->curnode != NULL)
node = reader->curnode;
else
node = reader->node;
if (node->type != XML_ELEMENT_NODE)
return(0);
if ((reader->state == XML_TEXTREADER_END) ||
(reader->state == XML_TEXTREADER_BACKTRACK))
return(0);
ret = 0;
attr = node->properties;
while (attr != NULL) {
ret++;
attr = attr->next;
}
ns = node->nsDef;
while (ns != NULL) {
ret++;
ns = ns->next;
}
return(ret);
}
/**
* xmlTextReaderNodeType:
* @reader: the xmlTextReaderPtr used
*
* Get the node type of the current node
* Reference:
* http://www.gnu.org/software/dotgnu/pnetlib-doc/System/Xml/XmlNodeType.html
*
* Returns the xmlReaderTypes of the current node or -1 in case of error
*/
int
xmlTextReaderNodeType(xmlTextReaderPtr reader) {
xmlNodePtr node;
if (reader == NULL)
return(-1);
if (reader->node == NULL)
return(XML_READER_TYPE_NONE);
if (reader->curnode != NULL)
node = reader->curnode;
else
node = reader->node;
switch (node->type) {
case XML_ELEMENT_NODE:
if ((reader->state == XML_TEXTREADER_END) ||
(reader->state == XML_TEXTREADER_BACKTRACK))
return(XML_READER_TYPE_END_ELEMENT);
return(XML_READER_TYPE_ELEMENT);
case XML_NAMESPACE_DECL:
case XML_ATTRIBUTE_NODE:
return(XML_READER_TYPE_ATTRIBUTE);
case XML_TEXT_NODE:
if (xmlIsBlankNode(reader->node)) {
if (xmlNodeGetSpacePreserve(reader->node))
return(XML_READER_TYPE_SIGNIFICANT_WHITESPACE);
else
return(XML_READER_TYPE_WHITESPACE);
} else {
return(XML_READER_TYPE_TEXT);
}
case XML_CDATA_SECTION_NODE:
return(XML_READER_TYPE_CDATA);
case XML_ENTITY_REF_NODE:
return(XML_READER_TYPE_ENTITY_REFERENCE);
case XML_ENTITY_NODE:
return(XML_READER_TYPE_ENTITY);
case XML_PI_NODE:
return(XML_READER_TYPE_PROCESSING_INSTRUCTION);
case XML_COMMENT_NODE:
return(XML_READER_TYPE_COMMENT);
case XML_DOCUMENT_NODE:
case XML_HTML_DOCUMENT_NODE:
return(XML_READER_TYPE_DOCUMENT);
case XML_DOCUMENT_FRAG_NODE:
return(XML_READER_TYPE_DOCUMENT_FRAGMENT);
case XML_NOTATION_NODE:
return(XML_READER_TYPE_NOTATION);
case XML_DOCUMENT_TYPE_NODE:
case XML_DTD_NODE:
return(XML_READER_TYPE_DOCUMENT_TYPE);
case XML_ELEMENT_DECL:
case XML_ATTRIBUTE_DECL:
case XML_ENTITY_DECL:
case XML_XINCLUDE_START:
case XML_XINCLUDE_END:
return(XML_READER_TYPE_NONE);
}
return(-1);
}
/**
* xmlTextReaderIsEmptyElement:
* @reader: the xmlTextReaderPtr used
*
* Check if the current node is empty
*
* Returns 1 if empty, 0 if not and -1 in case of error
*/
int
xmlTextReaderIsEmptyElement(xmlTextReaderPtr reader) {
if ((reader == NULL) || (reader->node == NULL))
return(-1);
if (reader->node->type != XML_ELEMENT_NODE)
return(0);
if (reader->curnode != NULL)
return(0);
if (reader->node->children != NULL)
return(0);
if (reader->state == XML_TEXTREADER_END)
return(0);
if (reader->doc != NULL)
return(1);
#ifdef LIBXML_XINCLUDE_ENABLED
if (reader->in_xinclude > 0)
return(1);
#endif
return((reader->node->extra & NODE_IS_EMPTY) != 0);
}
/**
* xmlTextReaderLocalName:
* @reader: the xmlTextReaderPtr used
*
* The local name of the node.
*
* Returns the local name or NULL if not available,
* if non NULL it need to be freed by the caller.
*/
xmlChar *
xmlTextReaderLocalName(xmlTextReaderPtr reader) {
xmlNodePtr node;
if ((reader == NULL) || (reader->node == NULL))
return(NULL);
if (reader->curnode != NULL)
node = reader->curnode;
else
node = reader->node;
if (node->type == XML_NAMESPACE_DECL) {
xmlNsPtr ns = (xmlNsPtr) node;
if (ns->prefix == NULL)
return(readerStrdup(reader, BAD_CAST "xmlns"));
else
return(readerStrdup(reader, ns->prefix));
}
if ((node->type != XML_ELEMENT_NODE) &&
(node->type != XML_ATTRIBUTE_NODE))
return(xmlTextReaderName(reader));
return(readerStrdup(reader, node->name));
}
/**
* xmlTextReaderConstLocalName:
* @reader: the xmlTextReaderPtr used
*
* The local name of the node.
*
* Returns the local name or NULL if not available, the
* string will be deallocated with the reader.
*/
const xmlChar *
xmlTextReaderConstLocalName(xmlTextReaderPtr reader) {
xmlNodePtr node;
if ((reader == NULL) || (reader->node == NULL))
return(NULL);
if (reader->curnode != NULL)
node = reader->curnode;
else
node = reader->node;
if (node->type == XML_NAMESPACE_DECL) {
xmlNsPtr ns = (xmlNsPtr) node;
if (ns->prefix == NULL)
return(constString(reader, BAD_CAST "xmlns"));
else
return(ns->prefix);
}
if ((node->type != XML_ELEMENT_NODE) &&
(node->type != XML_ATTRIBUTE_NODE))
return(xmlTextReaderConstName(reader));
return(node->name);
}
/**
* xmlTextReaderName:
* @reader: the xmlTextReaderPtr used
*
* The qualified name of the node, equal to Prefix :LocalName.
*
* Returns the local name or NULL if not available,
* if non NULL it need to be freed by the caller.
*/
xmlChar *
xmlTextReaderName(xmlTextReaderPtr reader) {
xmlNodePtr node;
xmlChar *ret;
if ((reader == NULL) || (reader->node == NULL))
return(NULL);
if (reader->curnode != NULL)
node = reader->curnode;
else
node = reader->node;
switch (node->type) {
case XML_ELEMENT_NODE:
case XML_ATTRIBUTE_NODE:
if ((node->ns == NULL) ||
(node->ns->prefix == NULL))
return(readerStrdup(reader, node->name));
ret = xmlBuildQName(node->name, node->ns->prefix, NULL, 0);
if (ret == NULL)
xmlTextReaderErrMemory(reader);
return(ret);
case XML_TEXT_NODE:
return(readerStrdup(reader, BAD_CAST "#text"));
case XML_CDATA_SECTION_NODE:
return(readerStrdup(reader, BAD_CAST "#cdata-section"));
case XML_ENTITY_NODE:
case XML_ENTITY_REF_NODE:
return(readerStrdup(reader, node->name));
case XML_PI_NODE:
return(readerStrdup(reader, node->name));
case XML_COMMENT_NODE:
return(readerStrdup(reader, BAD_CAST "#comment"));
case XML_DOCUMENT_NODE:
case XML_HTML_DOCUMENT_NODE:
return(readerStrdup(reader, BAD_CAST "#document"));
case XML_DOCUMENT_FRAG_NODE:
return(readerStrdup(reader, BAD_CAST "#document-fragment"));
case XML_NOTATION_NODE:
return(readerStrdup(reader, node->name));
case XML_DOCUMENT_TYPE_NODE:
case XML_DTD_NODE:
return(readerStrdup(reader, node->name));
case XML_NAMESPACE_DECL: {
xmlNsPtr ns = (xmlNsPtr) node;
if (ns->prefix == NULL)
return(readerStrdup(reader, BAD_CAST "xmlns"));
ret = xmlBuildQName(ns->prefix, BAD_CAST "xmlns", NULL, 0);
if (ret == NULL)
xmlTextReaderErrMemory(reader);
return(ret);
}
case XML_ELEMENT_DECL:
case XML_ATTRIBUTE_DECL:
case XML_ENTITY_DECL:
case XML_XINCLUDE_START:
case XML_XINCLUDE_END:
return(NULL);
}
return(NULL);
}
/**
* xmlTextReaderConstName:
* @reader: the xmlTextReaderPtr used
*
* The qualified name of the node, equal to Prefix :LocalName.
*
* Returns the local name or NULL if not available, the string is
* deallocated with the reader.
*/
const xmlChar *
xmlTextReaderConstName(xmlTextReaderPtr reader) {
xmlNodePtr node;
if ((reader == NULL) || (reader->node == NULL))
return(NULL);
if (reader->curnode != NULL)
node = reader->curnode;
else
node = reader->node;
switch (node->type) {
case XML_ELEMENT_NODE:
case XML_ATTRIBUTE_NODE:
if ((node->ns == NULL) ||
(node->ns->prefix == NULL))
return(node->name);
return(constQString(reader, node->ns->prefix, node->name));
case XML_TEXT_NODE:
return(constString(reader, BAD_CAST "#text"));
case XML_CDATA_SECTION_NODE:
return(constString(reader, BAD_CAST "#cdata-section"));
case XML_ENTITY_NODE:
case XML_ENTITY_REF_NODE:
return(constString(reader, node->name));
case XML_PI_NODE:
return(constString(reader, node->name));
case XML_COMMENT_NODE:
return(constString(reader, BAD_CAST "#comment"));
case XML_DOCUMENT_NODE:
case XML_HTML_DOCUMENT_NODE:
return(constString(reader, BAD_CAST "#document"));
case XML_DOCUMENT_FRAG_NODE:
return(constString(reader, BAD_CAST "#document-fragment"));
case XML_NOTATION_NODE:
return(constString(reader, node->name));
case XML_DOCUMENT_TYPE_NODE:
case XML_DTD_NODE:
return(constString(reader, node->name));
case XML_NAMESPACE_DECL: {
xmlNsPtr ns = (xmlNsPtr) node;
if (ns->prefix == NULL)
return(constString(reader, BAD_CAST "xmlns"));
return(constQString(reader, BAD_CAST "xmlns", ns->prefix));
}
case XML_ELEMENT_DECL:
case XML_ATTRIBUTE_DECL:
case XML_ENTITY_DECL:
case XML_XINCLUDE_START:
case XML_XINCLUDE_END:
return(NULL);
}
return(NULL);
}
/**
* xmlTextReaderPrefix:
* @reader: the xmlTextReaderPtr used
*
* A shorthand reference to the namespace associated with the node.
*
* Returns the prefix or NULL if not available,
* if non NULL it need to be freed by the caller.
*/
xmlChar *
xmlTextReaderPrefix(xmlTextReaderPtr reader) {
xmlNodePtr node;
if ((reader == NULL) || (reader->node == NULL))
return(NULL);
if (reader->curnode != NULL)
node = reader->curnode;
else
node = reader->node;
if (node->type == XML_NAMESPACE_DECL) {
xmlNsPtr ns = (xmlNsPtr) node;
if (ns->prefix == NULL)
return(NULL);
return(readerStrdup(reader, BAD_CAST "xmlns"));
}
if ((node->type != XML_ELEMENT_NODE) &&
(node->type != XML_ATTRIBUTE_NODE))
return(NULL);
if ((node->ns != NULL) && (node->ns->prefix != NULL))
return(readerStrdup(reader, node->ns->prefix));
return(NULL);
}
/**
* xmlTextReaderConstPrefix:
* @reader: the xmlTextReaderPtr used
*
* A shorthand reference to the namespace associated with the node.
*
* Returns the prefix or NULL if not available, the string is deallocated
* with the reader.
*/
const xmlChar *
xmlTextReaderConstPrefix(xmlTextReaderPtr reader) {
xmlNodePtr node;
if ((reader == NULL) || (reader->node == NULL))
return(NULL);
if (reader->curnode != NULL)
node = reader->curnode;
else
node = reader->node;
if (node->type == XML_NAMESPACE_DECL) {
xmlNsPtr ns = (xmlNsPtr) node;
if (ns->prefix == NULL)
return(NULL);
return(constString(reader, BAD_CAST "xmlns"));
}
if ((node->type != XML_ELEMENT_NODE) &&
(node->type != XML_ATTRIBUTE_NODE))
return(NULL);
if ((node->ns != NULL) && (node->ns->prefix != NULL))
return(constString(reader, node->ns->prefix));
return(NULL);
}
/**
* xmlTextReaderNamespaceUri:
* @reader: the xmlTextReaderPtr used
*
* The URI defining the namespace associated with the node.
*
* Returns the namespace URI or NULL if not available,
* if non NULL it need to be freed by the caller.
*/
xmlChar *
xmlTextReaderNamespaceUri(xmlTextReaderPtr reader) {
xmlNodePtr node;
if ((reader == NULL) || (reader->node == NULL))
return(NULL);
if (reader->curnode != NULL)
node = reader->curnode;
else
node = reader->node;
if (node->type == XML_NAMESPACE_DECL)
return(readerStrdup(reader, BAD_CAST "http://www.w3.org/2000/xmlns/"));
if ((node->type != XML_ELEMENT_NODE) &&
(node->type != XML_ATTRIBUTE_NODE))
return(NULL);
if (node->ns != NULL)
return(readerStrdup(reader, node->ns->href));
return(NULL);
}
/**
* xmlTextReaderConstNamespaceUri:
* @reader: the xmlTextReaderPtr used
*
* The URI defining the namespace associated with the node.
*
* Returns the namespace URI or NULL if not available, the string
* will be deallocated with the reader
*/
const xmlChar *
xmlTextReaderConstNamespaceUri(xmlTextReaderPtr reader) {
xmlNodePtr node;
if ((reader == NULL) || (reader->node == NULL))
return(NULL);
if (reader->curnode != NULL)
node = reader->curnode;
else
node = reader->node;
if (node->type == XML_NAMESPACE_DECL)
return(constString(reader, BAD_CAST "http://www.w3.org/2000/xmlns/"));
if ((node->type != XML_ELEMENT_NODE) &&
(node->type != XML_ATTRIBUTE_NODE))
return(NULL);
if (node->ns != NULL)
return(constString(reader, node->ns->href));
return(NULL);
}
/**
* xmlTextReaderBaseUri:
* @reader: the xmlTextReaderPtr used
*
* The base URI of the node.
*
* Returns the base URI or NULL if not available,
* if non NULL it need to be freed by the caller.
*/
xmlChar *
xmlTextReaderBaseUri(xmlTextReaderPtr reader) {
xmlChar *ret = NULL;
int result;
if ((reader == NULL) || (reader->node == NULL))
return(NULL);
result = xmlNodeGetBaseSafe(NULL, reader->node, &ret);
if (result < 0)
xmlTextReaderErrMemory(reader);
return(ret);
}
/**
* xmlTextReaderConstBaseUri:
* @reader: the xmlTextReaderPtr used
*
* The base URI of the node.
*
* Returns the base URI or NULL if not available, the string
* will be deallocated with the reader
*/
const xmlChar *
xmlTextReaderConstBaseUri(xmlTextReaderPtr reader) {
xmlChar *tmp;
const xmlChar *ret;
int result;
if ((reader == NULL) || (reader->node == NULL))
return(NULL);
result = xmlNodeGetBaseSafe(NULL, reader->node, &tmp);
if (result < 0)
xmlTextReaderErrMemory(reader);
if (tmp == NULL)
return(NULL);
ret = constString(reader, tmp);
xmlFree(tmp);
return(ret);
}
/**
* xmlTextReaderDepth:
* @reader: the xmlTextReaderPtr used
*
* The depth of the node in the tree.
*
* Returns the depth or -1 in case of error
*/
int
xmlTextReaderDepth(xmlTextReaderPtr reader) {
if (reader == NULL)
return(-1);
if (reader->node == NULL)
return(0);
if (reader->curnode != NULL) {
if ((reader->curnode->type == XML_ATTRIBUTE_NODE) ||
(reader->curnode->type == XML_NAMESPACE_DECL))
return(reader->depth + 1);
return(reader->depth + 2);
}
return(reader->depth);
}
/**
* xmlTextReaderHasAttributes:
* @reader: the xmlTextReaderPtr used
*
* Whether the node has attributes.
*
* Returns 1 if true, 0 if false, and -1 in case or error
*/
int
xmlTextReaderHasAttributes(xmlTextReaderPtr reader) {
xmlNodePtr node;
if (reader == NULL)
return(-1);
if (reader->node == NULL)
return(0);
if (reader->curnode != NULL)
node = reader->curnode;
else
node = reader->node;
if ((node->type == XML_ELEMENT_NODE) &&
((node->properties != NULL) || (node->nsDef != NULL)))
return(1);
/* TODO: handle the xmlDecl */
return(0);
}
/**
* xmlTextReaderHasValue:
* @reader: the xmlTextReaderPtr used
*
* Whether the node can have a text value.
*
* Returns 1 if true, 0 if false, and -1 in case or error
*/
int
xmlTextReaderHasValue(xmlTextReaderPtr reader) {
xmlNodePtr node;
if (reader == NULL)
return(-1);
if (reader->node == NULL)
return(0);
if (reader->curnode != NULL)
node = reader->curnode;
else
node = reader->node;
switch (node->type) {
case XML_ATTRIBUTE_NODE:
case XML_TEXT_NODE:
case XML_CDATA_SECTION_NODE:
case XML_PI_NODE:
case XML_COMMENT_NODE:
case XML_NAMESPACE_DECL:
return(1);
default:
break;
}
return(0);
}
/**
* xmlTextReaderValue:
* @reader: the xmlTextReaderPtr used
*
* Provides the text value of the node if present
*
* Returns the string or NULL if not available. The result must be deallocated
* with xmlFree()
*/
xmlChar *
xmlTextReaderValue(xmlTextReaderPtr reader) {
xmlNodePtr node;
if (reader == NULL)
return(NULL);
if (reader->node == NULL)
return(NULL);
if (reader->curnode != NULL)
node = reader->curnode;
else
node = reader->node;
switch (node->type) {
case XML_NAMESPACE_DECL:
return(readerStrdup(reader, ((xmlNsPtr) node)->href));
case XML_ATTRIBUTE_NODE:{
xmlAttrPtr attr = (xmlAttrPtr) node;
xmlDocPtr doc = NULL;
xmlChar *ret;
if (attr->parent != NULL)
doc = attr->parent->doc;
ret = xmlNodeListGetString(doc, attr->children, 1);
if (ret == NULL)
xmlTextReaderErrMemory(reader);
return(ret);
}
case XML_TEXT_NODE:
case XML_CDATA_SECTION_NODE:
case XML_PI_NODE:
case XML_COMMENT_NODE:
return(readerStrdup(reader, node->content));
default:
break;
}
return(NULL);
}
/**
* xmlTextReaderConstValue:
* @reader: the xmlTextReaderPtr used
*
* Provides the text value of the node if present
*
* Returns the string or NULL if not available. The result will be
* deallocated on the next Read() operation.
*/
const xmlChar *
xmlTextReaderConstValue(xmlTextReaderPtr reader) {
xmlNodePtr node;
if (reader == NULL)
return(NULL);
if (reader->node == NULL)
return(NULL);
if (reader->curnode != NULL)
node = reader->curnode;
else
node = reader->node;
switch (node->type) {
case XML_NAMESPACE_DECL:
return(((xmlNsPtr) node)->href);
case XML_ATTRIBUTE_NODE:{
xmlAttrPtr attr = (xmlAttrPtr) node;
const xmlChar *ret;
if ((attr->children != NULL) &&
(attr->children->type == XML_TEXT_NODE) &&
(attr->children->next == NULL))
return(attr->children->content);
else {
if (reader->buffer == NULL) {
reader->buffer = xmlBufCreateSize(100);
if (reader->buffer == NULL)
return (NULL);
xmlBufSetAllocationScheme(reader->buffer,
XML_BUFFER_ALLOC_DOUBLEIT);
} else
xmlBufEmpty(reader->buffer);
xmlBufGetNodeContent(reader->buffer, node);
ret = xmlBufContent(reader->buffer);
if (ret == NULL) {
xmlTextReaderErrMemory(reader);
/* error on the buffer best to reallocate */
xmlBufFree(reader->buffer);
reader->buffer = xmlBufCreateSize(100);
xmlBufSetAllocationScheme(reader->buffer,
XML_BUFFER_ALLOC_DOUBLEIT);
}
return(ret);
}
break;
}
case XML_TEXT_NODE:
case XML_CDATA_SECTION_NODE:
case XML_PI_NODE:
case XML_COMMENT_NODE:
return(node->content);
default:
break;
}
return(NULL);
}
/**
* xmlTextReaderIsDefault:
* @reader: the xmlTextReaderPtr used
*
* Whether an Attribute node was generated from the default value
* defined in the DTD or schema.
*
* Returns 0 if not defaulted, 1 if defaulted, and -1 in case of error
*/
int
xmlTextReaderIsDefault(xmlTextReaderPtr reader) {
if (reader == NULL)
return(-1);
return(0);
}
/**
* xmlTextReaderQuoteChar:
* @reader: the xmlTextReaderPtr used
*
* The quotation mark character used to enclose the value of an attribute.
*
* Returns " or ' and -1 in case of error
*/
int
xmlTextReaderQuoteChar(xmlTextReaderPtr reader) {
if (reader == NULL)
return(-1);
/* TODO maybe lookup the attribute value for " first */
return('"');
}
/**
* xmlTextReaderXmlLang:
* @reader: the xmlTextReaderPtr used
*
* The xml:lang scope within which the node resides.
*
* Returns the xml:lang value or NULL if none exists.,
* if non NULL it need to be freed by the caller.
*/
xmlChar *
xmlTextReaderXmlLang(xmlTextReaderPtr reader) {
if (reader == NULL)
return(NULL);
if (reader->node == NULL)
return(NULL);
return(xmlNodeGetLang(reader->node));
}
/**
* xmlTextReaderConstXmlLang:
* @reader: the xmlTextReaderPtr used
*
* The xml:lang scope within which the node resides.
*
* Returns the xml:lang value or NULL if none exists.
*/
const xmlChar *
xmlTextReaderConstXmlLang(xmlTextReaderPtr reader) {
xmlChar *tmp;
const xmlChar *ret;
if (reader == NULL)
return(NULL);
if (reader->node == NULL)
return(NULL);
tmp = xmlNodeGetLang(reader->node);
if (tmp == NULL)
return(NULL);
ret = constString(reader, tmp);
xmlFree(tmp);
return(ret);
}
/**
* xmlTextReaderConstString:
* @reader: the xmlTextReaderPtr used
* @str: the string to intern.
*
* Get an interned string from the reader, allows for example to
* speedup string name comparisons
*
* Returns an interned copy of the string or NULL in case of error. The
* string will be deallocated with the reader.
*/
const xmlChar *
xmlTextReaderConstString(xmlTextReaderPtr reader, const xmlChar *str) {
if (reader == NULL)
return(NULL);
return(constString(reader, str));
}
/**
* xmlTextReaderNormalization:
* @reader: the xmlTextReaderPtr used
*
* The value indicating whether to normalize white space and attribute values.
* Since attribute value and end of line normalizations are a MUST in the XML
* specification only the value true is accepted. The broken behaviour of
* accepting out of range character entities like &#0; is of course not
* supported either.
*
* Returns 1 or -1 in case of error.
*/
int
xmlTextReaderNormalization(xmlTextReaderPtr reader) {
if (reader == NULL)
return(-1);
return(1);
}
/************************************************************************
* *
* Extensions to the base APIs *
* *
************************************************************************/
/**
* xmlTextReaderSetParserProp:
* @reader: the xmlTextReaderPtr used
* @prop: the xmlParserProperties to set
* @value: usually 0 or 1 to (de)activate it
*
* Change the parser processing behaviour by changing some of its internal
* properties. Note that some properties can only be changed before any
* read has been done.
*
* Returns 0 if the call was successful, or -1 in case of error
*/
int
xmlTextReaderSetParserProp(xmlTextReaderPtr reader, int prop, int value) {
xmlParserProperties p = (xmlParserProperties) prop;
xmlParserCtxtPtr ctxt;
if ((reader == NULL) || (reader->ctxt == NULL))
return(-1);
ctxt = reader->ctxt;
switch (p) {
case XML_PARSER_LOADDTD:
if (value != 0) {
if (ctxt->loadsubset == 0) {
if (reader->mode != XML_TEXTREADER_MODE_INITIAL)
return(-1);
ctxt->options |= XML_PARSE_DTDLOAD;
ctxt->loadsubset |= XML_DETECT_IDS;
}
} else {
ctxt->options &= ~XML_PARSE_DTDLOAD;
ctxt->loadsubset &= ~XML_DETECT_IDS;
}
return(0);
case XML_PARSER_DEFAULTATTRS:
if (value != 0) {
ctxt->options |= XML_PARSE_DTDATTR;
ctxt->loadsubset |= XML_COMPLETE_ATTRS;
} else {
ctxt->options &= ~XML_PARSE_DTDATTR;
ctxt->loadsubset &= ~XML_COMPLETE_ATTRS;
}
return(0);
case XML_PARSER_VALIDATE:
if (value != 0) {
ctxt->options |= XML_PARSE_DTDVALID;
ctxt->validate = 1;
reader->validate = XML_TEXTREADER_VALIDATE_DTD;
} else {
ctxt->options &= ~XML_PARSE_DTDVALID;
ctxt->validate = 0;
}
return(0);
case XML_PARSER_SUBST_ENTITIES:
if (value != 0) {
ctxt->options |= XML_PARSE_NOENT;
ctxt->replaceEntities = 1;
} else {
ctxt->options &= ~XML_PARSE_NOENT;
ctxt->replaceEntities = 0;
}
return(0);
}
return(-1);
}
/**
* xmlTextReaderGetParserProp:
* @reader: the xmlTextReaderPtr used
* @prop: the xmlParserProperties to get
*
* Read the parser internal property.
*
* Returns the value, usually 0 or 1, or -1 in case of error.
*/
int
xmlTextReaderGetParserProp(xmlTextReaderPtr reader, int prop) {
xmlParserProperties p = (xmlParserProperties) prop;
xmlParserCtxtPtr ctxt;
if ((reader == NULL) || (reader->ctxt == NULL))
return(-1);
ctxt = reader->ctxt;
switch (p) {
case XML_PARSER_LOADDTD:
if ((ctxt->loadsubset != 0) || (ctxt->validate != 0))
return(1);
return(0);
case XML_PARSER_DEFAULTATTRS:
if (ctxt->loadsubset & XML_COMPLETE_ATTRS)
return(1);
return(0);
case XML_PARSER_VALIDATE:
return(reader->validate);
case XML_PARSER_SUBST_ENTITIES:
return(ctxt->replaceEntities);
}
return(-1);
}
/**
* xmlTextReaderGetParserLineNumber:
* @reader: the user data (XML reader context)
*
* Provide the line number of the current parsing point.
*
* Returns an int or 0 if not available
*/
int
xmlTextReaderGetParserLineNumber(xmlTextReaderPtr reader)
{
if ((reader == NULL) || (reader->ctxt == NULL) ||
(reader->ctxt->input == NULL)) {
return (0);
}
return (reader->ctxt->input->line);
}
/**
* xmlTextReaderGetParserColumnNumber:
* @reader: the user data (XML reader context)
*
* Provide the column number of the current parsing point.
*
* Returns an int or 0 if not available
*/
int
xmlTextReaderGetParserColumnNumber(xmlTextReaderPtr reader)
{
if ((reader == NULL) || (reader->ctxt == NULL) ||
(reader->ctxt->input == NULL)) {
return (0);
}
return (reader->ctxt->input->col);
}
/**
* xmlTextReaderCurrentNode:
* @reader: the xmlTextReaderPtr used
*
* Hacking interface allowing to get the xmlNodePtr corresponding to the
* current node being accessed by the xmlTextReader. This is dangerous
* because the underlying node may be destroyed on the next Reads.
*
* Returns the xmlNodePtr or NULL in case of error.
*/
xmlNodePtr
xmlTextReaderCurrentNode(xmlTextReaderPtr reader) {
if (reader == NULL)
return(NULL);
if (reader->curnode != NULL)
return(reader->curnode);
return(reader->node);
}
/**
* xmlTextReaderPreserve:
* @reader: the xmlTextReaderPtr used
*
* This tells the XML Reader to preserve the current node.
* The caller must also use xmlTextReaderCurrentDoc() to
* keep an handle on the resulting document once parsing has finished
*
* Returns the xmlNodePtr or NULL in case of error.
*/
xmlNodePtr
xmlTextReaderPreserve(xmlTextReaderPtr reader) {
xmlNodePtr cur, parent;
if (reader == NULL)
return(NULL);
cur = reader->node;
if (cur == NULL)
return(NULL);
if ((cur->type != XML_DOCUMENT_NODE) && (cur->type != XML_DTD_NODE)) {
cur->extra |= NODE_IS_PRESERVED;
cur->extra |= NODE_IS_SPRESERVED;
}
reader->preserves++;
parent = cur->parent;;
while (parent != NULL) {
if (parent->type == XML_ELEMENT_NODE)
parent->extra |= NODE_IS_PRESERVED;
parent = parent->parent;
}
return(cur);
}
#ifdef LIBXML_PATTERN_ENABLED
/**
* xmlTextReaderPreservePattern:
* @reader: the xmlTextReaderPtr used
* @pattern: an XPath subset pattern
* @namespaces: the prefix definitions, array of [URI, prefix] or NULL
*
* This tells the XML Reader to preserve all nodes matched by the
* pattern. The caller must also use xmlTextReaderCurrentDoc() to
* keep an handle on the resulting document once parsing has finished
*
* Returns a non-negative number in case of success and -1 in case of error
*/
int
xmlTextReaderPreservePattern(xmlTextReaderPtr reader, const xmlChar *pattern,
const xmlChar **namespaces)
{
xmlPatternPtr comp;
if ((reader == NULL) || (pattern == NULL))
return(-1);
comp = xmlPatterncompile(pattern, reader->dict, 0, namespaces);
if (comp == NULL)
return(-1);
if (reader->patternMax <= 0) {
reader->patternMax = 4;
reader->patternTab = (xmlPatternPtr *) xmlMalloc(reader->patternMax *
sizeof(reader->patternTab[0]));
if (reader->patternTab == NULL) {
xmlTextReaderErrMemory(reader);
return (-1);
}
}
if (reader->patternNr >= reader->patternMax) {
xmlPatternPtr *tmp;
reader->patternMax *= 2;
tmp = (xmlPatternPtr *) xmlRealloc(reader->patternTab,
reader->patternMax *
sizeof(reader->patternTab[0]));
if (tmp == NULL) {
xmlTextReaderErrMemory(reader);
reader->patternMax /= 2;
return (-1);
}
reader->patternTab = tmp;
}
reader->patternTab[reader->patternNr] = comp;
return(reader->patternNr++);
}
#endif
/**
* xmlTextReaderCurrentDoc:
* @reader: the xmlTextReaderPtr used
*
* Hacking interface allowing to get the xmlDocPtr corresponding to the
* current document being accessed by the xmlTextReader.
* NOTE: as a result of this call, the reader will not destroy the
* associated XML document and calling xmlFreeDoc() on the result
* is needed once the reader parsing has finished.
*
* Returns the xmlDocPtr or NULL in case of error.
*/
xmlDocPtr
xmlTextReaderCurrentDoc(xmlTextReaderPtr reader) {
if (reader == NULL)
return(NULL);
if (reader->doc != NULL)
return(reader->doc);
if ((reader->ctxt == NULL) || (reader->ctxt->myDoc == NULL))
return(NULL);
reader->preserve = 1;
return(reader->ctxt->myDoc);
}
#ifdef LIBXML_SCHEMAS_ENABLED
/**
* xmlTextReaderRelaxNGSetSchema:
* @reader: the xmlTextReaderPtr used
* @schema: a precompiled RelaxNG schema
*
* Use RelaxNG to validate the document as it is processed.
* Activation is only possible before the first Read().
* if @schema is NULL, then RelaxNG validation is deactivated.
@ The @schema should not be freed until the reader is deallocated
* or its use has been deactivated.
*
* Returns 0 in case the RelaxNG validation could be (de)activated and
* -1 in case of error.
*/
int
xmlTextReaderRelaxNGSetSchema(xmlTextReaderPtr reader, xmlRelaxNGPtr schema) {
if (reader == NULL)
return(-1);
if (schema == NULL) {
if (reader->rngSchemas != NULL) {
xmlRelaxNGFree(reader->rngSchemas);
reader->rngSchemas = NULL;
}
if (reader->rngValidCtxt != NULL) {
if (! reader->rngPreserveCtxt)
xmlRelaxNGFreeValidCtxt(reader->rngValidCtxt);
reader->rngValidCtxt = NULL;
}
reader->rngPreserveCtxt = 0;
return(0);
}
if (reader->mode != XML_TEXTREADER_MODE_INITIAL)
return(-1);
if (reader->rngSchemas != NULL) {
xmlRelaxNGFree(reader->rngSchemas);
reader->rngSchemas = NULL;
}
if (reader->rngValidCtxt != NULL) {
if (! reader->rngPreserveCtxt)
xmlRelaxNGFreeValidCtxt(reader->rngValidCtxt);
reader->rngValidCtxt = NULL;
}
reader->rngPreserveCtxt = 0;
reader->rngValidCtxt = xmlRelaxNGNewValidCtxt(schema);
if (reader->rngValidCtxt == NULL)
return(-1);
if ((reader->errorFunc != NULL) || (reader->sErrorFunc != NULL))
xmlRelaxNGSetValidStructuredErrors(reader->rngValidCtxt,
xmlTextReaderStructuredRelay, reader);
reader->rngValidErrors = 0;
reader->rngFullNode = NULL;
reader->validate = XML_TEXTREADER_VALIDATE_RNG;
return(0);
}
/**
* xmlTextReaderLocator:
* @ctx: the xmlTextReaderPtr used
* @file: returned file information
* @line: returned line information
*
* Internal locator function for the readers
*
* Returns 0 in case the Schema validation could be (de)activated and
* -1 in case of error.
*/
static int
xmlTextReaderLocator(void *ctx, const char **file, unsigned long *line) {
xmlTextReaderPtr reader;
if ((ctx == NULL) || ((file == NULL) && (line == NULL)))
return(-1);
if (file != NULL)
*file = NULL;
if (line != NULL)
*line = 0;
reader = (xmlTextReaderPtr) ctx;
if ((reader->ctxt != NULL) && (reader->ctxt->input != NULL)) {
if (file != NULL)
*file = reader->ctxt->input->filename;
if (line != NULL)
*line = reader->ctxt->input->line;
return(0);
}
if (reader->node != NULL) {
long res;
int ret = 0;
if (line != NULL) {
res = xmlGetLineNo(reader->node);
if (res > 0)
*line = (unsigned long) res;
else
ret = -1;
}
if (file != NULL) {
xmlDocPtr doc = reader->node->doc;
if ((doc != NULL) && (doc->URL != NULL))
*file = (const char *) doc->URL;
else
ret = -1;
}
return(ret);
}
return(-1);
}
/**
* xmlTextReaderSetSchema:
* @reader: the xmlTextReaderPtr used
* @schema: a precompiled Schema schema
*
* Use XSD Schema to validate the document as it is processed.
* Activation is only possible before the first Read().
* if @schema is NULL, then Schema validation is deactivated.
* The @schema should not be freed until the reader is deallocated
* or its use has been deactivated.
*
* Returns 0 in case the Schema validation could be (de)activated and
* -1 in case of error.
*/
int
xmlTextReaderSetSchema(xmlTextReaderPtr reader, xmlSchemaPtr schema) {
if (reader == NULL)
return(-1);
if (schema == NULL) {
if (reader->xsdPlug != NULL) {
xmlSchemaSAXUnplug(reader->xsdPlug);
reader->xsdPlug = NULL;
}
if (reader->xsdValidCtxt != NULL) {
if (! reader->xsdPreserveCtxt)
xmlSchemaFreeValidCtxt(reader->xsdValidCtxt);
reader->xsdValidCtxt = NULL;
}
reader->xsdPreserveCtxt = 0;
if (reader->xsdSchemas != NULL) {
xmlSchemaFree(reader->xsdSchemas);
reader->xsdSchemas = NULL;
}
return(0);
}
if (reader->mode != XML_TEXTREADER_MODE_INITIAL)
return(-1);
if (reader->xsdPlug != NULL) {
xmlSchemaSAXUnplug(reader->xsdPlug);
reader->xsdPlug = NULL;
}
if (reader->xsdValidCtxt != NULL) {
if (! reader->xsdPreserveCtxt)
xmlSchemaFreeValidCtxt(reader->xsdValidCtxt);
reader->xsdValidCtxt = NULL;
}
reader->xsdPreserveCtxt = 0;
if (reader->xsdSchemas != NULL) {
xmlSchemaFree(reader->xsdSchemas);
reader->xsdSchemas = NULL;
}
reader->xsdValidCtxt = xmlSchemaNewValidCtxt(schema);
if (reader->xsdValidCtxt == NULL) {
xmlSchemaFree(reader->xsdSchemas);
reader->xsdSchemas = NULL;
return(-1);
}
reader->xsdPlug = xmlSchemaSAXPlug(reader->xsdValidCtxt,
&(reader->ctxt->sax),
&(reader->ctxt->userData));
if (reader->xsdPlug == NULL) {
xmlSchemaFree(reader->xsdSchemas);
reader->xsdSchemas = NULL;
xmlSchemaFreeValidCtxt(reader->xsdValidCtxt);
reader->xsdValidCtxt = NULL;
return(-1);
}
xmlSchemaValidateSetLocator(reader->xsdValidCtxt,
xmlTextReaderLocator,
(void *) reader);
if ((reader->errorFunc != NULL) || (reader->sErrorFunc != NULL))
xmlSchemaSetValidStructuredErrors(reader->xsdValidCtxt,
xmlTextReaderStructuredRelay, reader);
reader->xsdValidErrors = 0;
reader->validate = XML_TEXTREADER_VALIDATE_XSD;
return(0);
}
/**
* xmlTextReaderRelaxNGValidateInternal:
* @reader: the xmlTextReaderPtr used
* @rng: the path to a RelaxNG schema or NULL
* @ctxt: the RelaxNG schema validation context or NULL
* @options: options (not yet used)
*
* Use RelaxNG to validate the document as it is processed.
* Activation is only possible before the first Read().
* If both @rng and @ctxt are NULL, then RelaxNG validation is deactivated.
*
* Returns 0 in case the RelaxNG validation could be (de)activated and
* -1 in case of error.
*/
static int
xmlTextReaderRelaxNGValidateInternal(xmlTextReaderPtr reader,
const char *rng,
xmlRelaxNGValidCtxtPtr ctxt,
int options ATTRIBUTE_UNUSED)
{
if (reader == NULL)
return(-1);
if ((rng != NULL) && (ctxt != NULL))
return (-1);
if (((rng != NULL) || (ctxt != NULL)) &&
((reader->mode != XML_TEXTREADER_MODE_INITIAL) ||
(reader->ctxt == NULL)))
return(-1);
/* Cleanup previous validation stuff. */
if (reader->rngValidCtxt != NULL) {
if ( !reader->rngPreserveCtxt)
xmlRelaxNGFreeValidCtxt(reader->rngValidCtxt);
reader->rngValidCtxt = NULL;
}
reader->rngPreserveCtxt = 0;
if (reader->rngSchemas != NULL) {
xmlRelaxNGFree(reader->rngSchemas);
reader->rngSchemas = NULL;
}
if ((rng == NULL) && (ctxt == NULL)) {
/* We just want to deactivate the validation, so get out. */
return(0);
}
if (rng != NULL) {
xmlRelaxNGParserCtxtPtr pctxt;
/* Parse the schema and create validation environment. */
pctxt = xmlRelaxNGNewParserCtxt(rng);
if ((reader->errorFunc != NULL) || (reader->sErrorFunc != NULL))
xmlRelaxNGSetParserStructuredErrors(pctxt,
xmlTextReaderStructuredRelay, reader);
reader->rngSchemas = xmlRelaxNGParse(pctxt);
xmlRelaxNGFreeParserCtxt(pctxt);
if (reader->rngSchemas == NULL)
return(-1);
reader->rngValidCtxt = xmlRelaxNGNewValidCtxt(reader->rngSchemas);
if (reader->rngValidCtxt == NULL) {
xmlRelaxNGFree(reader->rngSchemas);
reader->rngSchemas = NULL;
return(-1);
}
} else {
/* Use the given validation context. */
reader->rngValidCtxt = ctxt;
reader->rngPreserveCtxt = 1;
}
/*
* Redirect the validation context's error channels to use
* the reader channels.
* TODO: In case the user provides the validation context we
* could make this redirection optional.
*/
if ((reader->errorFunc != NULL) || (reader->sErrorFunc != NULL))
xmlRelaxNGSetValidStructuredErrors(reader->rngValidCtxt,
xmlTextReaderStructuredRelay, reader);
reader->rngValidErrors = 0;
reader->rngFullNode = NULL;
reader->validate = XML_TEXTREADER_VALIDATE_RNG;
return(0);
}
/**
* xmlTextReaderSchemaValidateInternal:
* @reader: the xmlTextReaderPtr used
* @xsd: the path to a W3C XSD schema or NULL
* @ctxt: the XML Schema validation context or NULL
* @options: options (not used yet)
*
* Validate the document as it is processed using XML Schema.
* Activation is only possible before the first Read().
* If both @xsd and @ctxt are NULL then XML Schema validation is deactivated.
*
* Returns 0 in case the schemas validation could be (de)activated and
* -1 in case of error.
*/
static int
xmlTextReaderSchemaValidateInternal(xmlTextReaderPtr reader,
const char *xsd,
xmlSchemaValidCtxtPtr ctxt,
int options ATTRIBUTE_UNUSED)
{
if (reader == NULL)
return(-1);
if ((xsd != NULL) && (ctxt != NULL))
return(-1);
if (((xsd != NULL) || (ctxt != NULL)) &&
((reader->mode != XML_TEXTREADER_MODE_INITIAL) ||
(reader->ctxt == NULL)))
return(-1);
/* Cleanup previous validation stuff. */
if (reader->xsdPlug != NULL) {
xmlSchemaSAXUnplug(reader->xsdPlug);
reader->xsdPlug = NULL;
}
if (reader->xsdValidCtxt != NULL) {
if (! reader->xsdPreserveCtxt)
xmlSchemaFreeValidCtxt(reader->xsdValidCtxt);
reader->xsdValidCtxt = NULL;
}
reader->xsdPreserveCtxt = 0;
if (reader->xsdSchemas != NULL) {
xmlSchemaFree(reader->xsdSchemas);
reader->xsdSchemas = NULL;
}
if ((xsd == NULL) && (ctxt == NULL)) {
/* We just want to deactivate the validation, so get out. */
return(0);
}
if (xsd != NULL) {
xmlSchemaParserCtxtPtr pctxt;
/* Parse the schema and create validation environment. */
pctxt = xmlSchemaNewParserCtxt(xsd);
if ((reader->errorFunc != NULL) || (reader->sErrorFunc != NULL))
xmlSchemaSetParserStructuredErrors(pctxt,
xmlTextReaderStructuredRelay, reader);
reader->xsdSchemas = xmlSchemaParse(pctxt);
xmlSchemaFreeParserCtxt(pctxt);
if (reader->xsdSchemas == NULL)
return(-1);
reader->xsdValidCtxt = xmlSchemaNewValidCtxt(reader->xsdSchemas);
if (reader->xsdValidCtxt == NULL) {
xmlSchemaFree(reader->xsdSchemas);
reader->xsdSchemas = NULL;
return(-1);
}
reader->xsdPlug = xmlSchemaSAXPlug(reader->xsdValidCtxt,
&(reader->ctxt->sax),
&(reader->ctxt->userData));
if (reader->xsdPlug == NULL) {
xmlSchemaFree(reader->xsdSchemas);
reader->xsdSchemas = NULL;
xmlSchemaFreeValidCtxt(reader->xsdValidCtxt);
reader->xsdValidCtxt = NULL;
return(-1);
}
} else {
/* Use the given validation context. */
reader->xsdValidCtxt = ctxt;
reader->xsdPreserveCtxt = 1;
reader->xsdPlug = xmlSchemaSAXPlug(reader->xsdValidCtxt,
&(reader->ctxt->sax),
&(reader->ctxt->userData));
if (reader->xsdPlug == NULL) {
reader->xsdValidCtxt = NULL;
reader->xsdPreserveCtxt = 0;
return(-1);
}
}
xmlSchemaValidateSetLocator(reader->xsdValidCtxt,
xmlTextReaderLocator,
(void *) reader);
/*
* Redirect the validation context's error channels to use
* the reader channels.
* TODO: In case the user provides the validation context we
* could make this redirection optional.
*/
if ((reader->errorFunc != NULL) || (reader->sErrorFunc != NULL))
xmlSchemaSetValidStructuredErrors(reader->xsdValidCtxt,
xmlTextReaderStructuredRelay, reader);
reader->xsdValidErrors = 0;
reader->validate = XML_TEXTREADER_VALIDATE_XSD;
return(0);
}
/**
* xmlTextReaderSchemaValidateCtxt:
* @reader: the xmlTextReaderPtr used
* @ctxt: the XML Schema validation context or NULL
* @options: options (not used yet)
*
* Use W3C XSD schema context to validate the document as it is processed.
* Activation is only possible before the first Read().
* If @ctxt is NULL, then XML Schema validation is deactivated.
*
* Returns 0 in case the schemas validation could be (de)activated and
* -1 in case of error.
*/
int
xmlTextReaderSchemaValidateCtxt(xmlTextReaderPtr reader,
xmlSchemaValidCtxtPtr ctxt,
int options)
{
return(xmlTextReaderSchemaValidateInternal(reader, NULL, ctxt, options));
}
/**
* xmlTextReaderSchemaValidate:
* @reader: the xmlTextReaderPtr used
* @xsd: the path to a W3C XSD schema or NULL
*
* Use W3C XSD schema to validate the document as it is processed.
* Activation is only possible before the first Read().
* If @xsd is NULL, then XML Schema validation is deactivated.
*
* Returns 0 in case the schemas validation could be (de)activated and
* -1 in case of error.
*/
int
xmlTextReaderSchemaValidate(xmlTextReaderPtr reader, const char *xsd)
{
return(xmlTextReaderSchemaValidateInternal(reader, xsd, NULL, 0));
}
/**
* xmlTextReaderRelaxNGValidateCtxt:
* @reader: the xmlTextReaderPtr used
* @ctxt: the RelaxNG schema validation context or NULL
* @options: options (not used yet)
*
* Use RelaxNG schema context to validate the document as it is processed.
* Activation is only possible before the first Read().
* If @ctxt is NULL, then RelaxNG schema validation is deactivated.
*
* Returns 0 in case the schemas validation could be (de)activated and
* -1 in case of error.
*/
int
xmlTextReaderRelaxNGValidateCtxt(xmlTextReaderPtr reader,
xmlRelaxNGValidCtxtPtr ctxt,
int options)
{
return(xmlTextReaderRelaxNGValidateInternal(reader, NULL, ctxt, options));
}
/**
* xmlTextReaderRelaxNGValidate:
* @reader: the xmlTextReaderPtr used
* @rng: the path to a RelaxNG schema or NULL
*
* Use RelaxNG schema to validate the document as it is processed.
* Activation is only possible before the first Read().
* If @rng is NULL, then RelaxNG schema validation is deactivated.
*
* Returns 0 in case the schemas validation could be (de)activated and
* -1 in case of error.
*/
int
xmlTextReaderRelaxNGValidate(xmlTextReaderPtr reader, const char *rng)
{
return(xmlTextReaderRelaxNGValidateInternal(reader, rng, NULL, 0));
}
#endif
/**
* xmlTextReaderIsNamespaceDecl:
* @reader: the xmlTextReaderPtr used
*
* Determine whether the current node is a namespace declaration
* rather than a regular attribute.
*
* Returns 1 if the current node is a namespace declaration, 0 if it
* is a regular attribute or other type of node, or -1 in case of
* error.
*/
int
xmlTextReaderIsNamespaceDecl(xmlTextReaderPtr reader) {
xmlNodePtr node;
if (reader == NULL)
return(-1);
if (reader->node == NULL)
return(-1);
if (reader->curnode != NULL)
node = reader->curnode;
else
node = reader->node;
if (XML_NAMESPACE_DECL == node->type)
return(1);
else
return(0);
}
/**
* xmlTextReaderConstXmlVersion:
* @reader: the xmlTextReaderPtr used
*
* Determine the XML version of the document being read.
*
* Returns a string containing the XML version of the document or NULL
* in case of error. The string is deallocated with the reader.
*/
const xmlChar *
xmlTextReaderConstXmlVersion(xmlTextReaderPtr reader) {
xmlDocPtr doc = NULL;
if (reader == NULL)
return(NULL);
if (reader->doc != NULL)
doc = reader->doc;
else if (reader->ctxt != NULL)
doc = reader->ctxt->myDoc;
if (doc == NULL)
return(NULL);
if (doc->version == NULL)
return(NULL);
else
return(constString(reader, doc->version));
}
/**
* xmlTextReaderStandalone:
* @reader: the xmlTextReaderPtr used
*
* Determine the standalone status of the document being read.
*
* Returns 1 if the document was declared to be standalone, 0 if it
* was declared to be not standalone, or -1 if the document did not
* specify its standalone status or in case of error.
*/
int
xmlTextReaderStandalone(xmlTextReaderPtr reader) {
xmlDocPtr doc = NULL;
if (reader == NULL)
return(-1);
if (reader->doc != NULL)
doc = reader->doc;
else if (reader->ctxt != NULL)
doc = reader->ctxt->myDoc;
if (doc == NULL)
return(-1);
return(doc->standalone);
}
/************************************************************************
* *
* Error Handling Extensions *
* *
************************************************************************/
/**
* xmlTextReaderLocatorLineNumber:
* @locator: the xmlTextReaderLocatorPtr used
*
* Obtain the line number for the given locator.
*
* Returns the line number or -1 in case of error.
*/
int
xmlTextReaderLocatorLineNumber(xmlTextReaderLocatorPtr locator) {
/* we know that locator is a xmlParserCtxtPtr */
xmlParserCtxtPtr ctx = (xmlParserCtxtPtr)locator;
int ret = -1;
if (locator == NULL)
return(-1);
if (ctx->node != NULL) {
ret = xmlGetLineNo(ctx->node);
}
else {
/* inspired from error.c */
xmlParserInputPtr input;
input = ctx->input;
if ((input->filename == NULL) && (ctx->inputNr > 1))
input = ctx->inputTab[ctx->inputNr - 2];
if (input != NULL) {
ret = input->line;
}
else {
ret = -1;
}
}
return ret;
}
/**
* xmlTextReaderLocatorBaseURI:
* @locator: the xmlTextReaderLocatorPtr used
*
* Obtain the base URI for the given locator.
*
* Returns the base URI or NULL in case of error,
* if non NULL it need to be freed by the caller.
*/
xmlChar *
xmlTextReaderLocatorBaseURI(xmlTextReaderLocatorPtr locator) {
/* we know that locator is a xmlParserCtxtPtr */
xmlParserCtxtPtr ctx = (xmlParserCtxtPtr)locator;
xmlChar *ret = NULL;
if (locator == NULL)
return(NULL);
if (ctx->node != NULL) {
ret = xmlNodeGetBase(NULL,ctx->node);
}
else {
/* inspired from error.c */
xmlParserInputPtr input;
input = ctx->input;
if ((input->filename == NULL) && (ctx->inputNr > 1))
input = ctx->inputTab[ctx->inputNr - 2];
if (input != NULL) {
ret = xmlStrdup(BAD_CAST input->filename);
}
else {
ret = NULL;
}
}
return ret;
}
/**
* xmlTextReaderSetErrorHandler:
* @reader: the xmlTextReaderPtr used
* @f: the callback function to call on error and warnings
* @arg: a user argument to pass to the callback function
*
* DEPRECATED: Use xmlTextReaderSetStructuredErrorHandler.
*
* Register a callback function that will be called on error and warnings.
*
* If @f is NULL, the default error and warning handlers are restored.
*/
void
xmlTextReaderSetErrorHandler(xmlTextReaderPtr reader,
xmlTextReaderErrorFunc f, void *arg)
{
if (f != NULL) {
reader->errorFunc = f;
reader->sErrorFunc = NULL;
reader->errorFuncArg = arg;
xmlCtxtSetErrorHandler(reader->ctxt,
xmlTextReaderStructuredRelay, reader);
#ifdef LIBXML_SCHEMAS_ENABLED
if (reader->rngValidCtxt) {
xmlRelaxNGSetValidStructuredErrors(reader->rngValidCtxt,
xmlTextReaderStructuredRelay, reader);
}
if (reader->xsdValidCtxt) {
xmlSchemaSetValidStructuredErrors(reader->xsdValidCtxt,
xmlTextReaderStructuredRelay, reader);
}
#endif
} else {
/* restore defaults */
reader->errorFunc = NULL;
reader->sErrorFunc = NULL;
reader->errorFuncArg = NULL;
xmlCtxtSetErrorHandler(reader->ctxt, NULL, NULL);
#ifdef LIBXML_SCHEMAS_ENABLED
if (reader->rngValidCtxt) {
xmlRelaxNGSetValidStructuredErrors(reader->rngValidCtxt, NULL,
NULL);
}
if (reader->xsdValidCtxt) {
xmlSchemaSetValidStructuredErrors(reader->xsdValidCtxt, NULL,
NULL);
}
#endif
}
}
/**
* xmlTextReaderSetStructuredErrorHandler:
* @reader: the xmlTextReaderPtr used
* @f: the callback function to call on error and warnings
* @arg: a user argument to pass to the callback function
*
* Register a callback function that will be called on error and warnings.
*
* If @f is NULL, the default error and warning handlers are restored.
*/
void
xmlTextReaderSetStructuredErrorHandler(xmlTextReaderPtr reader,
xmlStructuredErrorFunc f, void *arg)
{
if (f != NULL) {
reader->sErrorFunc = f;
reader->errorFunc = NULL;
reader->errorFuncArg = arg;
xmlCtxtSetErrorHandler(reader->ctxt,
xmlTextReaderStructuredRelay, reader);
#ifdef LIBXML_SCHEMAS_ENABLED
if (reader->rngValidCtxt) {
xmlRelaxNGSetValidStructuredErrors(reader->rngValidCtxt,
xmlTextReaderStructuredRelay, reader);
}
if (reader->xsdValidCtxt) {
xmlSchemaSetValidStructuredErrors(reader->xsdValidCtxt,
xmlTextReaderStructuredRelay, reader);
}
#endif
} else {
/* restore defaults */
reader->errorFunc = NULL;
reader->sErrorFunc = NULL;
reader->errorFuncArg = NULL;
xmlCtxtSetErrorHandler(reader->ctxt, NULL, NULL);
#ifdef LIBXML_SCHEMAS_ENABLED
if (reader->rngValidCtxt) {
xmlRelaxNGSetValidStructuredErrors(reader->rngValidCtxt, NULL,
NULL);
}
if (reader->xsdValidCtxt) {
xmlSchemaSetValidStructuredErrors(reader->xsdValidCtxt, NULL,
NULL);
}
#endif
}
}
/**
* xmlTextReaderIsValid:
* @reader: the xmlTextReaderPtr used
*
* Retrieve the validity status from the parser context
*
* Returns the flag value 1 if valid, 0 if no, and -1 in case of error
*/
int
xmlTextReaderIsValid(xmlTextReaderPtr reader)
{
if (reader == NULL)
return (-1);
#ifdef LIBXML_SCHEMAS_ENABLED
if (reader->validate == XML_TEXTREADER_VALIDATE_RNG)
return (reader->rngValidErrors == 0);
if (reader->validate == XML_TEXTREADER_VALIDATE_XSD)
return (reader->xsdValidErrors == 0);
#endif
if ((reader->ctxt != NULL) && (reader->ctxt->validate == 1))
return (reader->ctxt->valid);
return (0);
}
/**
* xmlTextReaderGetErrorHandler:
* @reader: the xmlTextReaderPtr used
* @f: the callback function or NULL is no callback has been registered
* @arg: a user argument
*
* Retrieve the error callback function and user argument.
*/
void
xmlTextReaderGetErrorHandler(xmlTextReaderPtr reader,
xmlTextReaderErrorFunc * f, void **arg)
{
if (f != NULL)
*f = reader->errorFunc;
if (arg != NULL)
*arg = reader->errorFuncArg;
}
/************************************************************************
* *
* New set (2.6.0) of simpler and more flexible APIs *
* *
************************************************************************/
/**
* xmlTextReaderSetup:
* @reader: an XML reader
* @input: xmlParserInputBufferPtr used to feed the reader, will
* be destroyed with it.
* @URL: the base URL to use for the document
* @encoding: the document encoding, or NULL
* @options: a combination of xmlParserOption
*
* Setup an XML reader with new options
*
* Returns 0 in case of success and -1 in case of error.
*/
int
xmlTextReaderSetup(xmlTextReaderPtr reader,
xmlParserInputBufferPtr input, const char *URL,
const char *encoding, int options)
{
if (reader == NULL) {
if (input != NULL)
xmlFreeParserInputBuffer(input);
return (-1);
}
/*
* we force the generation of compact text nodes on the reader
* since usr applications should never modify the tree
*/
options |= XML_PARSE_COMPACT;
reader->doc = NULL;
reader->entNr = 0;
reader->parserFlags = options;
reader->validate = XML_TEXTREADER_NOT_VALIDATE;
if ((input != NULL) && (reader->input != NULL) &&
(reader->allocs & XML_TEXTREADER_INPUT)) {
xmlFreeParserInputBuffer(reader->input);
reader->input = NULL;
reader->allocs -= XML_TEXTREADER_INPUT;
}
if (input != NULL) {
reader->input = input;
reader->allocs |= XML_TEXTREADER_INPUT;
}
if (reader->buffer == NULL)
reader->buffer = xmlBufCreateSize(100);
if (reader->buffer == NULL) {
return (-1);
}
/* no operation on a reader should require a huge buffer */
xmlBufSetAllocationScheme(reader->buffer,
XML_BUFFER_ALLOC_DOUBLEIT);
if (reader->sax == NULL)
reader->sax = (xmlSAXHandler *) xmlMalloc(sizeof(xmlSAXHandler));
if (reader->sax == NULL) {
return (-1);
}
xmlSAXVersion(reader->sax, 2);
reader->startElement = reader->sax->startElement;
reader->sax->startElement = xmlTextReaderStartElement;
reader->endElement = reader->sax->endElement;
reader->sax->endElement = xmlTextReaderEndElement;
#ifdef LIBXML_SAX1_ENABLED
if (reader->sax->initialized == XML_SAX2_MAGIC) {
#endif /* LIBXML_SAX1_ENABLED */
reader->startElementNs = reader->sax->startElementNs;
reader->sax->startElementNs = xmlTextReaderStartElementNs;
reader->endElementNs = reader->sax->endElementNs;
reader->sax->endElementNs = xmlTextReaderEndElementNs;
#ifdef LIBXML_SAX1_ENABLED
} else {
reader->startElementNs = NULL;
reader->endElementNs = NULL;
}
#endif /* LIBXML_SAX1_ENABLED */
reader->characters = reader->sax->characters;
reader->sax->characters = xmlTextReaderCharacters;
reader->sax->ignorableWhitespace = xmlTextReaderCharacters;
reader->cdataBlock = reader->sax->cdataBlock;
reader->sax->cdataBlock = xmlTextReaderCDataBlock;
reader->mode = XML_TEXTREADER_MODE_INITIAL;
reader->node = NULL;
reader->curnode = NULL;
if (input != NULL) {
if (xmlBufUse(reader->input->buffer) < 4) {
xmlParserInputBufferRead(input, 4);
}
if (reader->ctxt == NULL) {
if (xmlBufUse(reader->input->buffer) >= 4) {
reader->ctxt = xmlCreatePushParserCtxt(reader->sax, NULL,
(const char *) xmlBufContent(reader->input->buffer),
4, URL);
reader->base = 0;
reader->cur = 4;
} else {
reader->ctxt =
xmlCreatePushParserCtxt(reader->sax, NULL, NULL, 0, URL);
reader->base = 0;
reader->cur = 0;
}
if (reader->ctxt == NULL) {
return (-1);
}
} else {
xmlParserInputPtr inputStream;
xmlParserInputBufferPtr buf;
xmlCtxtReset(reader->ctxt);
buf = xmlAllocParserInputBuffer(XML_CHAR_ENCODING_NONE);
if (buf == NULL) return(-1);
inputStream = xmlNewInputStream(reader->ctxt);
if (inputStream == NULL) {
xmlFreeParserInputBuffer(buf);
return(-1);
}
if (URL == NULL)
inputStream->filename = NULL;
else
inputStream->filename = (char *)
xmlCanonicPath((const xmlChar *) URL);
inputStream->buf = buf;
xmlBufResetInput(buf->buffer, inputStream);
inputPush(reader->ctxt, inputStream);
reader->cur = 0;
}
}
if (reader->dict != NULL) {
if (reader->ctxt->dict != NULL) {
if (reader->dict != reader->ctxt->dict) {
xmlDictFree(reader->dict);
reader->dict = reader->ctxt->dict;
}
} else {
reader->ctxt->dict = reader->dict;
}
} else {
if (reader->ctxt->dict == NULL)
reader->ctxt->dict = xmlDictCreate();
reader->dict = reader->ctxt->dict;
}
reader->ctxt->_private = reader;
reader->ctxt->linenumbers = 1;
reader->ctxt->dictNames = 1;
/*
* use the parser dictionary to allocate all elements and attributes names
*/
reader->ctxt->parseMode = XML_PARSE_READER;
#ifdef LIBXML_XINCLUDE_ENABLED
if (reader->xincctxt != NULL) {
xmlXIncludeFreeContext(reader->xincctxt);
reader->xincctxt = NULL;
}
if (options & XML_PARSE_XINCLUDE) {
reader->xinclude = 1;
reader->xinclude_name = xmlDictLookup(reader->dict, XINCLUDE_NODE, -1);
if (reader->xinclude_name == NULL)
return(-1);
options -= XML_PARSE_XINCLUDE;
} else
reader->xinclude = 0;
reader->in_xinclude = 0;
#endif
#ifdef LIBXML_PATTERN_ENABLED
if (reader->patternTab == NULL) {
reader->patternNr = 0;
reader->patternMax = 0;
}
while (reader->patternNr > 0) {
reader->patternNr--;
if (reader->patternTab[reader->patternNr] != NULL) {
xmlFreePattern(reader->patternTab[reader->patternNr]);
reader->patternTab[reader->patternNr] = NULL;
}
}
#endif
if (options & XML_PARSE_DTDVALID)
reader->validate = XML_TEXTREADER_VALIDATE_DTD;
xmlCtxtUseOptions(reader->ctxt, options);
if (encoding != NULL)
xmlSwitchEncodingName(reader->ctxt, encoding);
if ((URL != NULL) && (reader->ctxt->input != NULL) &&
(reader->ctxt->input->filename == NULL)) {
reader->ctxt->input->filename = (char *)
xmlStrdup((const xmlChar *) URL);
if (reader->ctxt->input->filename == NULL)
return(-1);
}
reader->doc = NULL;
return (0);
}
/**
* xmlTextReaderSetMaxAmplification:
* @reader: an XML reader
* @maxAmpl: maximum amplification factor
*
* Set the maximum amplification factor. See xmlCtxtSetMaxAmplification.
*/
void
xmlTextReaderSetMaxAmplification(xmlTextReaderPtr reader, unsigned maxAmpl)
{
xmlCtxtSetMaxAmplification(reader->ctxt, maxAmpl);
}
/**
* xmlTextReaderGetLastError:
* @reader: an XML reader
*
* Available since 2.13.0.
*
* Returns the last error.
*/
const xmlError *
xmlTextReaderGetLastError(xmlTextReaderPtr reader)
{
if (reader == NULL)
return(NULL);
return(&reader->ctxt->lastError);
}
/**
* xmlTextReaderByteConsumed:
* @reader: an XML reader
*
* This function provides the current index of the parser used
* by the reader, relative to the start of the current entity.
* This function actually just wraps a call to xmlBytesConsumed()
* for the parser context associated with the reader.
* See xmlBytesConsumed() for more information.
*
* Returns the index in bytes from the beginning of the entity or -1
* in case the index could not be computed.
*/
long
xmlTextReaderByteConsumed(xmlTextReaderPtr reader) {
if ((reader == NULL) || (reader->ctxt == NULL))
return(-1);
return(xmlByteConsumed(reader->ctxt));
}
/**
* xmlReaderWalker:
* @doc: a preparsed document
*
* Create an xmltextReader for a preparsed document.
*
* Returns the new reader or NULL in case of error.
*/
xmlTextReaderPtr
xmlReaderWalker(xmlDocPtr doc)
{
xmlTextReaderPtr ret;
if (doc == NULL)
return(NULL);
ret = xmlMalloc(sizeof(xmlTextReader));
if (ret == NULL) {
return(NULL);
}
memset(ret, 0, sizeof(xmlTextReader));
ret->entNr = 0;
ret->input = NULL;
ret->mode = XML_TEXTREADER_MODE_INITIAL;
ret->node = NULL;
ret->curnode = NULL;
ret->base = 0;
ret->cur = 0;
ret->allocs = XML_TEXTREADER_CTXT;
ret->doc = doc;
ret->state = XML_TEXTREADER_START;
ret->dict = xmlDictCreate();
return(ret);
}
/**
* xmlReaderForDoc:
* @cur: a pointer to a zero terminated string
* @URL: the base URL to use for the document
* @encoding: the document encoding, or NULL
* @options: a combination of xmlParserOption
*
* Create an xmltextReader for an XML in-memory document.
* The parsing flags @options are a combination of xmlParserOption.
*
* Returns the new reader or NULL in case of error.
*/
xmlTextReaderPtr
xmlReaderForDoc(const xmlChar * cur, const char *URL, const char *encoding,
int options)
{
int len;
if (cur == NULL)
return (NULL);
len = xmlStrlen(cur);
return (xmlReaderForMemory
((const char *) cur, len, URL, encoding, options));
}
/**
* xmlReaderForFile:
* @filename: a file or URL
* @encoding: the document encoding, or NULL
* @options: a combination of xmlParserOption
*
* parse an XML file from the filesystem or the network.
* The parsing flags @options are a combination of xmlParserOption.
*
* Returns the new reader or NULL in case of error.
*/
xmlTextReaderPtr
xmlReaderForFile(const char *filename, const char *encoding, int options)
{
xmlTextReaderPtr reader;
reader = xmlNewTextReaderFilename(filename);
if (reader == NULL)
return (NULL);
if (xmlTextReaderSetup(reader, NULL, NULL, encoding, options) < 0) {
xmlFreeTextReader(reader);
return (NULL);
}
return (reader);
}
/**
* xmlReaderForMemory:
* @buffer: a pointer to a char array
* @size: the size of the array
* @URL: the base URL to use for the document
* @encoding: the document encoding, or NULL
* @options: a combination of xmlParserOption
*
* Create an xmltextReader for an XML in-memory document.
* The parsing flags @options are a combination of xmlParserOption.
*
* Returns the new reader or NULL in case of error.
*/
xmlTextReaderPtr
xmlReaderForMemory(const char *buffer, int size, const char *URL,
const char *encoding, int options)
{
xmlTextReaderPtr reader;
xmlParserInputBufferPtr buf;
buf = xmlParserInputBufferCreateMem(buffer, size, XML_CHAR_ENCODING_NONE);
if (buf == NULL) {
return (NULL);
}
reader = xmlNewTextReader(buf, URL);
if (reader == NULL) {
xmlFreeParserInputBuffer(buf);
return (NULL);
}
reader->allocs |= XML_TEXTREADER_INPUT;
if (xmlTextReaderSetup(reader, NULL, URL, encoding, options) < 0) {
xmlFreeTextReader(reader);
return (NULL);
}
return (reader);
}
/**
* xmlReaderForFd:
* @fd: an open file descriptor
* @URL: the base URL to use for the document
* @encoding: the document encoding, or NULL
* @options: a combination of xmlParserOption
*
* Create an xmltextReader for an XML from a file descriptor.
* The parsing flags @options are a combination of xmlParserOption.
* NOTE that the file descriptor will not be closed when the
* reader is closed or reset.
*
* Returns the new reader or NULL in case of error.
*/
xmlTextReaderPtr
xmlReaderForFd(int fd, const char *URL, const char *encoding, int options)
{
xmlTextReaderPtr reader;
xmlParserInputBufferPtr input;
if (fd < 0)
return (NULL);
input = xmlParserInputBufferCreateFd(fd, XML_CHAR_ENCODING_NONE);
if (input == NULL)
return (NULL);
input->closecallback = NULL;
reader = xmlNewTextReader(input, URL);
if (reader == NULL) {
xmlFreeParserInputBuffer(input);
return (NULL);
}
reader->allocs |= XML_TEXTREADER_INPUT;
if (xmlTextReaderSetup(reader, NULL, URL, encoding, options) < 0) {
xmlFreeTextReader(reader);
return (NULL);
}
return (reader);
}
/**
* xmlReaderForIO:
* @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
*
* Create an xmltextReader for an XML document from I/O functions and source.
* The parsing flags @options are a combination of xmlParserOption.
*
* Returns the new reader or NULL in case of error.
*/
xmlTextReaderPtr
xmlReaderForIO(xmlInputReadCallback ioread, xmlInputCloseCallback ioclose,
void *ioctx, const char *URL, const char *encoding,
int options)
{
xmlTextReaderPtr reader;
xmlParserInputBufferPtr input;
if (ioread == NULL)
return (NULL);
input = xmlParserInputBufferCreateIO(ioread, ioclose, ioctx,
XML_CHAR_ENCODING_NONE);
if (input == NULL) {
if (ioclose != NULL)
ioclose(ioctx);
return (NULL);
}
reader = xmlNewTextReader(input, URL);
if (reader == NULL) {
xmlFreeParserInputBuffer(input);
return (NULL);
}
reader->allocs |= XML_TEXTREADER_INPUT;
if (xmlTextReaderSetup(reader, NULL, URL, encoding, options) < 0) {
xmlFreeTextReader(reader);
return (NULL);
}
return (reader);
}
/**
* xmlReaderNewWalker:
* @reader: an XML reader
* @doc: a preparsed document
*
* Setup an xmltextReader to parse a preparsed XML document.
* This reuses the existing @reader xmlTextReader.
*
* Returns 0 in case of success and -1 in case of error
*/
int
xmlReaderNewWalker(xmlTextReaderPtr reader, xmlDocPtr doc)
{
if (doc == NULL)
return (-1);
if (reader == NULL)
return (-1);
if (reader->input != NULL) {
xmlFreeParserInputBuffer(reader->input);
}
if (reader->ctxt != NULL) {
xmlCtxtReset(reader->ctxt);
}
reader->entNr = 0;
reader->input = NULL;
reader->mode = XML_TEXTREADER_MODE_INITIAL;
reader->node = NULL;
reader->curnode = NULL;
reader->base = 0;
reader->cur = 0;
reader->allocs = XML_TEXTREADER_CTXT;
reader->doc = doc;
reader->state = XML_TEXTREADER_START;
if (reader->dict == NULL) {
if ((reader->ctxt != NULL) && (reader->ctxt->dict != NULL))
reader->dict = reader->ctxt->dict;
else
reader->dict = xmlDictCreate();
}
return(0);
}
/**
* xmlReaderNewDoc:
* @reader: an XML reader
* @cur: a pointer to a zero terminated string
* @URL: the base URL to use for the document
* @encoding: the document encoding, or NULL
* @options: a combination of xmlParserOption
*
* Setup an xmltextReader to parse an XML in-memory document.
* The parsing flags @options are a combination of xmlParserOption.
* This reuses the existing @reader xmlTextReader.
*
* Returns 0 in case of success and -1 in case of error
*/
int
xmlReaderNewDoc(xmlTextReaderPtr reader, const xmlChar * cur,
const char *URL, const char *encoding, int options)
{
int len;
if (cur == NULL)
return (-1);
if (reader == NULL)
return (-1);
len = xmlStrlen(cur);
return (xmlReaderNewMemory(reader, (const char *)cur, len,
URL, encoding, options));
}
/**
* xmlReaderNewFile:
* @reader: an XML reader
* @filename: a file or URL
* @encoding: the document encoding, or NULL
* @options: a combination of xmlParserOption
*
* parse an XML file from the filesystem or the network.
* The parsing flags @options are a combination of xmlParserOption.
* This reuses the existing @reader xmlTextReader.
*
* Returns 0 in case of success and -1 in case of error
*/
int
xmlReaderNewFile(xmlTextReaderPtr reader, const char *filename,
const char *encoding, int options)
{
xmlParserInputBufferPtr input;
if (filename == NULL)
return (-1);
if (reader == NULL)
return (-1);
input =
xmlParserInputBufferCreateFilename(filename,
XML_CHAR_ENCODING_NONE);
if (input == NULL)
return (-1);
return (xmlTextReaderSetup(reader, input, filename, encoding, options));
}
/**
* xmlReaderNewMemory:
* @reader: an XML reader
* @buffer: a pointer to a char array
* @size: the size of the array
* @URL: the base URL to use for the document
* @encoding: the document encoding, or NULL
* @options: a combination of xmlParserOption
*
* Setup an xmltextReader to parse an XML in-memory document.
* The parsing flags @options are a combination of xmlParserOption.
* This reuses the existing @reader xmlTextReader.
*
* Returns 0 in case of success and -1 in case of error
*/
int
xmlReaderNewMemory(xmlTextReaderPtr reader, const char *buffer, int size,
const char *URL, const char *encoding, int options)
{
xmlParserInputBufferPtr input;
if (reader == NULL)
return (-1);
if (buffer == NULL)
return (-1);
input = xmlParserInputBufferCreateMem(buffer, size,
XML_CHAR_ENCODING_NONE);
if (input == NULL) {
return (-1);
}
return (xmlTextReaderSetup(reader, input, URL, encoding, options));
}
/**
* xmlReaderNewFd:
* @reader: an XML reader
* @fd: an open file descriptor
* @URL: the base URL to use for the document
* @encoding: the document encoding, or NULL
* @options: a combination of xmlParserOption
*
* Setup an xmltextReader to parse an XML from a file descriptor.
* NOTE that the file descriptor will not be closed when the
* reader is closed or reset.
* The parsing flags @options are a combination of xmlParserOption.
* This reuses the existing @reader xmlTextReader.
*
* Returns 0 in case of success and -1 in case of error
*/
int
xmlReaderNewFd(xmlTextReaderPtr reader, int fd,
const char *URL, const char *encoding, int options)
{
xmlParserInputBufferPtr input;
if (fd < 0)
return (-1);
if (reader == NULL)
return (-1);
input = xmlParserInputBufferCreateFd(fd, XML_CHAR_ENCODING_NONE);
if (input == NULL)
return (-1);
input->closecallback = NULL;
return (xmlTextReaderSetup(reader, input, URL, encoding, options));
}
/**
* xmlReaderNewIO:
* @reader: an XML reader
* @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
*
* Setup an xmltextReader to parse an XML document from I/O functions
* and source.
* The parsing flags @options are a combination of xmlParserOption.
* This reuses the existing @reader xmlTextReader.
*
* Returns 0 in case of success and -1 in case of error
*/
int
xmlReaderNewIO(xmlTextReaderPtr reader, xmlInputReadCallback ioread,
xmlInputCloseCallback ioclose, void *ioctx,
const char *URL, const char *encoding, int options)
{
xmlParserInputBufferPtr input;
if (ioread == NULL)
return (-1);
if (reader == NULL)
return (-1);
input = xmlParserInputBufferCreateIO(ioread, ioclose, ioctx,
XML_CHAR_ENCODING_NONE);
if (input == NULL) {
if (ioclose != NULL)
ioclose(ioctx);
return (-1);
}
return (xmlTextReaderSetup(reader, input, URL, encoding, options));
}
/************************************************************************
* *
* Utilities *
* *
************************************************************************/
#ifdef NOT_USED_YET
/**
* xmlBase64Decode:
* @in: the input buffer
* @inlen: the size of the input (in), the size read from it (out)
* @to: the output buffer
* @tolen: the size of the output (in), the size written to (out)
*
* Base64 decoder, reads from @in and save in @to
* TODO: tell jody when this is actually exported
*
* Returns 0 if all the input was consumer, 1 if the Base64 end was reached,
* 2 if there wasn't enough space on the output or -1 in case of error.
*/
static int
xmlBase64Decode(const unsigned char *in, unsigned long *inlen,
unsigned char *to, unsigned long *tolen)
{
unsigned long incur; /* current index in in[] */
unsigned long inblk; /* last block index in in[] */
unsigned long outcur; /* current index in out[] */
unsigned long inmax; /* size of in[] */
unsigned long outmax; /* size of out[] */
unsigned char cur; /* the current value read from in[] */
unsigned char intmp[4], outtmp[4]; /* temporary buffers for the convert */
int nbintmp; /* number of byte in intmp[] */
int is_ignore; /* cur should be ignored */
int is_end = 0; /* the end of the base64 was found */
int retval = 1;
int i;
if ((in == NULL) || (inlen == NULL) || (to == NULL) || (tolen == NULL))
return (-1);
incur = 0;
inblk = 0;
outcur = 0;
inmax = *inlen;
outmax = *tolen;
nbintmp = 0;
while (1) {
if (incur >= inmax)
break;
cur = in[incur++];
is_ignore = 0;
if ((cur >= 'A') && (cur <= 'Z'))
cur = cur - 'A';
else if ((cur >= 'a') && (cur <= 'z'))
cur = cur - 'a' + 26;
else if ((cur >= '0') && (cur <= '9'))
cur = cur - '0' + 52;
else if (cur == '+')
cur = 62;
else if (cur == '/')
cur = 63;
else if (cur == '.')
cur = 0;
else if (cur == '=') /*no op , end of the base64 stream */
is_end = 1;
else {
is_ignore = 1;
if (nbintmp == 0)
inblk = incur;
}
if (!is_ignore) {
int nbouttmp = 3;
int is_break = 0;
if (is_end) {
if (nbintmp == 0)
break;
if ((nbintmp == 1) || (nbintmp == 2))
nbouttmp = 1;
else
nbouttmp = 2;
nbintmp = 3;
is_break = 1;
}
intmp[nbintmp++] = cur;
/*
* if intmp is full, push the 4byte sequence as a 3 byte
* sequence out
*/
if (nbintmp == 4) {
nbintmp = 0;
outtmp[0] = (intmp[0] << 2) | ((intmp[1] & 0x30) >> 4);
outtmp[1] =
((intmp[1] & 0x0F) << 4) | ((intmp[2] & 0x3C) >> 2);
outtmp[2] = ((intmp[2] & 0x03) << 6) | (intmp[3] & 0x3F);
if (outcur + 3 >= outmax) {
retval = 2;
break;
}
for (i = 0; i < nbouttmp; i++)
to[outcur++] = outtmp[i];
inblk = incur;
}
if (is_break) {
retval = 0;
break;
}
}
}
*tolen = outcur;
*inlen = inblk;
return (retval);
}
/*
* Test routine for the xmlBase64Decode function
*/
#if 0
int
main(int argc, char **argv)
{
char *input = " VW4 gcGV0 \n aXQgdGVzdCAuCg== ";
char output[100];
char output2[100];
char output3[100];
unsigned long inlen = strlen(input);
unsigned long outlen = 100;
int ret;
unsigned long cons, tmp, tmp2, prod;
/*
* Direct
*/
ret = xmlBase64Decode(input, &inlen, output, &outlen);
output[outlen] = 0;
printf("ret: %d, inlen: %ld , outlen: %ld, output: '%s'\n", ret, inlen,
outlen, output)indent: Standard input:179: Error:Unmatched #endif
;
/*
* output chunking
*/
cons = 0;
prod = 0;
while (cons < inlen) {
tmp = 5;
tmp2 = inlen - cons;
printf("%ld %ld\n", cons, prod);
ret = xmlBase64Decode(&input[cons], &tmp2, &output2[prod], &tmp);
cons += tmp2;
prod += tmp;
printf("%ld %ld\n", cons, prod);
}
output2[outlen] = 0;
printf("ret: %d, cons: %ld , prod: %ld, output: '%s'\n", ret, cons,
prod, output2);
/*
* input chunking
*/
cons = 0;
prod = 0;
while (cons < inlen) {
tmp = 100 - prod;
tmp2 = inlen - cons;
if (tmp2 > 5)
tmp2 = 5;
printf("%ld %ld\n", cons, prod);
ret = xmlBase64Decode(&input[cons], &tmp2, &output3[prod], &tmp);
cons += tmp2;
prod += tmp;
printf("%ld %ld\n", cons, prod);
}
output3[outlen] = 0;
printf("ret: %d, cons: %ld , prod: %ld, output: '%s'\n", ret, cons,
prod, output3);
return (0);
}
#endif
#endif /* NOT_USED_YET */
#endif /* LIBXML_READER_ENABLED */
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