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b0fc67aa22
This option would allow for a smaller, but mostly useless minimal build. But it complicates the symbol availability logic in an insane way and requires specialized tools like our custom C parser in doc/apibuild.py. See #717.
978 lines
25 KiB
C
978 lines
25 KiB
C
/*
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* entities.c : implementation for the XML entities handling
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*
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* See Copyright for the status of this software.
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*
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* daniel@veillard.com
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*/
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/* To avoid EBCDIC trouble when parsing on zOS */
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#if defined(__MVS__)
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#pragma convert("ISO8859-1")
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#endif
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#define IN_LIBXML
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#include "libxml.h"
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#include <string.h>
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#include <stdlib.h>
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#include <libxml/xmlmemory.h>
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#include <libxml/hash.h>
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#include <libxml/entities.h>
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#include <libxml/parser.h>
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#include <libxml/parserInternals.h>
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#include <libxml/xmlerror.h>
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#include <libxml/dict.h>
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#include <libxml/xmlsave.h>
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#include "private/entities.h"
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#include "private/error.h"
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/*
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* The XML predefined entities.
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*/
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static xmlEntity xmlEntityLt = {
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NULL, XML_ENTITY_DECL, BAD_CAST "lt",
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NULL, NULL, NULL, NULL, NULL, NULL,
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BAD_CAST "<", BAD_CAST "<", 1,
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XML_INTERNAL_PREDEFINED_ENTITY,
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NULL, NULL, NULL, NULL, 0, 0, 0
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};
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static xmlEntity xmlEntityGt = {
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NULL, XML_ENTITY_DECL, BAD_CAST "gt",
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NULL, NULL, NULL, NULL, NULL, NULL,
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BAD_CAST ">", BAD_CAST ">", 1,
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XML_INTERNAL_PREDEFINED_ENTITY,
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NULL, NULL, NULL, NULL, 0, 0, 0
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};
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static xmlEntity xmlEntityAmp = {
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NULL, XML_ENTITY_DECL, BAD_CAST "amp",
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NULL, NULL, NULL, NULL, NULL, NULL,
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BAD_CAST "&", BAD_CAST "&", 1,
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XML_INTERNAL_PREDEFINED_ENTITY,
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NULL, NULL, NULL, NULL, 0, 0, 0
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};
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static xmlEntity xmlEntityQuot = {
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NULL, XML_ENTITY_DECL, BAD_CAST "quot",
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NULL, NULL, NULL, NULL, NULL, NULL,
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BAD_CAST "\"", BAD_CAST "\"", 1,
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XML_INTERNAL_PREDEFINED_ENTITY,
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NULL, NULL, NULL, NULL, 0, 0, 0
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};
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static xmlEntity xmlEntityApos = {
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NULL, XML_ENTITY_DECL, BAD_CAST "apos",
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NULL, NULL, NULL, NULL, NULL, NULL,
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BAD_CAST "'", BAD_CAST "'", 1,
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XML_INTERNAL_PREDEFINED_ENTITY,
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NULL, NULL, NULL, NULL, 0, 0, 0
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};
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/*
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* xmlFreeEntity:
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* @entity: an entity
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*
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* Frees the entity.
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*/
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void
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xmlFreeEntity(xmlEntityPtr entity)
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{
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xmlDictPtr dict = NULL;
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if (entity == NULL)
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return;
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if (entity->doc != NULL)
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dict = entity->doc->dict;
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if ((entity->children) &&
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(entity == (xmlEntityPtr) entity->children->parent))
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xmlFreeNodeList(entity->children);
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if ((entity->name != NULL) &&
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((dict == NULL) || (!xmlDictOwns(dict, entity->name))))
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xmlFree((char *) entity->name);
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if (entity->ExternalID != NULL)
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xmlFree((char *) entity->ExternalID);
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if (entity->SystemID != NULL)
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xmlFree((char *) entity->SystemID);
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if (entity->URI != NULL)
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xmlFree((char *) entity->URI);
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if (entity->content != NULL)
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xmlFree((char *) entity->content);
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if (entity->orig != NULL)
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xmlFree((char *) entity->orig);
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xmlFree(entity);
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}
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/*
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* xmlCreateEntity:
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*
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* internal routine doing the entity node structures allocations
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*/
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static xmlEntityPtr
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xmlCreateEntity(xmlDocPtr doc, const xmlChar *name, int type,
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const xmlChar *ExternalID, const xmlChar *SystemID,
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const xmlChar *content) {
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xmlEntityPtr ret;
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ret = (xmlEntityPtr) xmlMalloc(sizeof(xmlEntity));
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if (ret == NULL)
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return(NULL);
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memset(ret, 0, sizeof(xmlEntity));
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ret->doc = doc;
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ret->type = XML_ENTITY_DECL;
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/*
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* fill the structure.
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*/
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ret->etype = (xmlEntityType) type;
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if ((doc == NULL) || (doc->dict == NULL))
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ret->name = xmlStrdup(name);
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else
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ret->name = xmlDictLookup(doc->dict, name, -1);
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if (ret->name == NULL)
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goto error;
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if (ExternalID != NULL) {
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ret->ExternalID = xmlStrdup(ExternalID);
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if (ret->ExternalID == NULL)
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goto error;
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}
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if (SystemID != NULL) {
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ret->SystemID = xmlStrdup(SystemID);
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if (ret->SystemID == NULL)
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goto error;
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}
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if (content != NULL) {
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ret->length = xmlStrlen(content);
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ret->content = xmlStrndup(content, ret->length);
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if (ret->content == NULL)
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goto error;
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} else {
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ret->length = 0;
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ret->content = NULL;
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}
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ret->URI = NULL; /* to be computed by the layer knowing
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the defining entity */
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ret->orig = NULL;
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return(ret);
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error:
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xmlFreeEntity(ret);
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return(NULL);
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}
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/**
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* xmlAddEntity:
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* @doc: the document
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* @extSubset: add to the external or internal subset
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* @name: the entity name
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* @type: the entity type XML_xxx_yyy_ENTITY
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* @ExternalID: the entity external ID if available
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* @SystemID: the entity system ID if available
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* @content: the entity content
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* @out: pointer to resulting entity (optional)
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*
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* Register a new entity for this document.
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*
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* Available since 2.13.0.
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*
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* Returns an xmlParserErrors error code.
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*/
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int
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xmlAddEntity(xmlDocPtr doc, int extSubset, const xmlChar *name, int type,
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const xmlChar *ExternalID, const xmlChar *SystemID,
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const xmlChar *content, xmlEntityPtr *out) {
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xmlDtdPtr dtd;
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xmlDictPtr dict = NULL;
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xmlEntitiesTablePtr table = NULL;
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xmlEntityPtr ret, predef;
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int res;
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if (out != NULL)
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*out = NULL;
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if ((doc == NULL) || (name == NULL))
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return(XML_ERR_ARGUMENT);
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dict = doc->dict;
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if (extSubset)
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dtd = doc->extSubset;
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else
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dtd = doc->intSubset;
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if (dtd == NULL)
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return(XML_DTD_NO_DTD);
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switch (type) {
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case XML_INTERNAL_GENERAL_ENTITY:
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case XML_EXTERNAL_GENERAL_PARSED_ENTITY:
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case XML_EXTERNAL_GENERAL_UNPARSED_ENTITY:
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predef = xmlGetPredefinedEntity(name);
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if (predef != NULL) {
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int valid = 0;
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/* 4.6 Predefined Entities */
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if ((type == XML_INTERNAL_GENERAL_ENTITY) &&
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(content != NULL)) {
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int c = predef->content[0];
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if (((content[0] == c) && (content[1] == 0)) &&
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((c == '>') || (c == '\'') || (c == '"'))) {
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valid = 1;
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} else if ((content[0] == '&') && (content[1] == '#')) {
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if (content[2] == 'x') {
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xmlChar *hex = BAD_CAST "0123456789ABCDEF";
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xmlChar ref[] = "00;";
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ref[0] = hex[c / 16 % 16];
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ref[1] = hex[c % 16];
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if (xmlStrcasecmp(&content[3], ref) == 0)
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valid = 1;
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} else {
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xmlChar ref[] = "00;";
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ref[0] = '0' + c / 10 % 10;
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ref[1] = '0' + c % 10;
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if (xmlStrEqual(&content[2], ref))
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valid = 1;
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}
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}
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}
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if (!valid)
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return(XML_ERR_REDECL_PREDEF_ENTITY);
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}
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if (dtd->entities == NULL) {
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dtd->entities = xmlHashCreateDict(0, dict);
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if (dtd->entities == NULL)
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return(XML_ERR_NO_MEMORY);
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}
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table = dtd->entities;
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break;
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case XML_INTERNAL_PARAMETER_ENTITY:
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case XML_EXTERNAL_PARAMETER_ENTITY:
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if (dtd->pentities == NULL) {
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dtd->pentities = xmlHashCreateDict(0, dict);
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if (dtd->pentities == NULL)
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return(XML_ERR_NO_MEMORY);
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}
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table = dtd->pentities;
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break;
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default:
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return(XML_ERR_ARGUMENT);
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}
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ret = xmlCreateEntity(dtd->doc, name, type, ExternalID, SystemID, content);
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if (ret == NULL)
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return(XML_ERR_NO_MEMORY);
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res = xmlHashAdd(table, name, ret);
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if (res < 0) {
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xmlFreeEntity(ret);
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return(XML_ERR_NO_MEMORY);
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} else if (res == 0) {
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/*
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* entity was already defined at another level.
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*/
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xmlFreeEntity(ret);
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return(XML_WAR_ENTITY_REDEFINED);
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}
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/*
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* Link it to the DTD
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*/
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ret->parent = dtd;
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ret->doc = dtd->doc;
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if (dtd->last == NULL) {
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dtd->children = dtd->last = (xmlNodePtr) ret;
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} else {
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dtd->last->next = (xmlNodePtr) ret;
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ret->prev = dtd->last;
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dtd->last = (xmlNodePtr) ret;
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}
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if (out != NULL)
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*out = ret;
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return(0);
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}
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/**
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* xmlGetPredefinedEntity:
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* @name: the entity name
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*
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* Check whether this name is an predefined entity.
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*
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* Returns NULL if not, otherwise the entity
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*/
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xmlEntityPtr
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xmlGetPredefinedEntity(const xmlChar *name) {
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if (name == NULL) return(NULL);
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switch (name[0]) {
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case 'l':
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if (xmlStrEqual(name, BAD_CAST "lt"))
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return(&xmlEntityLt);
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break;
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case 'g':
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if (xmlStrEqual(name, BAD_CAST "gt"))
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return(&xmlEntityGt);
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break;
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case 'a':
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if (xmlStrEqual(name, BAD_CAST "amp"))
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return(&xmlEntityAmp);
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if (xmlStrEqual(name, BAD_CAST "apos"))
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return(&xmlEntityApos);
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break;
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case 'q':
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if (xmlStrEqual(name, BAD_CAST "quot"))
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return(&xmlEntityQuot);
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break;
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default:
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break;
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}
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return(NULL);
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}
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/**
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* xmlAddDtdEntity:
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* @doc: the document
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* @name: the entity name
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* @type: the entity type XML_xxx_yyy_ENTITY
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* @ExternalID: the entity external ID if available
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* @SystemID: the entity system ID if available
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* @content: the entity content
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*
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* Register a new entity for this document DTD external subset.
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*
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* Returns a pointer to the entity or NULL in case of error
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*/
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xmlEntityPtr
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xmlAddDtdEntity(xmlDocPtr doc, const xmlChar *name, int type,
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const xmlChar *ExternalID, const xmlChar *SystemID,
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const xmlChar *content) {
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xmlEntityPtr ret;
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xmlAddEntity(doc, 1, name, type, ExternalID, SystemID, content, &ret);
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return(ret);
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}
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/**
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* xmlAddDocEntity:
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* @doc: the document
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* @name: the entity name
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* @type: the entity type XML_xxx_yyy_ENTITY
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* @ExternalID: the entity external ID if available
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* @SystemID: the entity system ID if available
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* @content: the entity content
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*
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* Register a new entity for this document.
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*
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* Returns a pointer to the entity or NULL in case of error
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*/
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xmlEntityPtr
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xmlAddDocEntity(xmlDocPtr doc, const xmlChar *name, int type,
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const xmlChar *ExternalID, const xmlChar *SystemID,
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const xmlChar *content) {
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xmlEntityPtr ret;
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xmlAddEntity(doc, 0, name, type, ExternalID, SystemID, content, &ret);
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return(ret);
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}
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/**
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* xmlNewEntity:
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* @doc: the document
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* @name: the entity name
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* @type: the entity type XML_xxx_yyy_ENTITY
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* @ExternalID: the entity external ID if available
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* @SystemID: the entity system ID if available
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* @content: the entity content
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*
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* Create a new entity, this differs from xmlAddDocEntity() that if
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* the document is NULL or has no internal subset defined, then an
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* unlinked entity structure will be returned, it is then the responsibility
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* of the caller to link it to the document later or free it when not needed
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* anymore.
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*
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* Returns a pointer to the entity or NULL in case of error
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*/
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xmlEntityPtr
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xmlNewEntity(xmlDocPtr doc, const xmlChar *name, int type,
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const xmlChar *ExternalID, const xmlChar *SystemID,
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const xmlChar *content) {
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if ((doc != NULL) && (doc->intSubset != NULL)) {
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return(xmlAddDocEntity(doc, name, type, ExternalID, SystemID, content));
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}
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if (name == NULL)
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return(NULL);
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return(xmlCreateEntity(doc, name, type, ExternalID, SystemID, content));
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}
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/**
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* xmlGetEntityFromTable:
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* @table: an entity table
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* @name: the entity name
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* @parameter: look for parameter entities
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*
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* Do an entity lookup in the table.
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* returns the corresponding parameter entity, if found.
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*
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* Returns A pointer to the entity structure or NULL if not found.
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*/
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static xmlEntityPtr
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xmlGetEntityFromTable(xmlEntitiesTablePtr table, const xmlChar *name) {
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return((xmlEntityPtr) xmlHashLookup(table, name));
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}
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/**
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* xmlGetParameterEntity:
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* @doc: the document referencing the entity
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* @name: the entity name
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*
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* Do an entity lookup in the internal and external subsets and
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* returns the corresponding parameter entity, if found.
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*
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* Returns A pointer to the entity structure or NULL if not found.
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*/
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xmlEntityPtr
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xmlGetParameterEntity(xmlDocPtr doc, const xmlChar *name) {
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xmlEntitiesTablePtr table;
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xmlEntityPtr ret;
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if (doc == NULL)
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return(NULL);
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if ((doc->intSubset != NULL) && (doc->intSubset->pentities != NULL)) {
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table = (xmlEntitiesTablePtr) doc->intSubset->pentities;
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ret = xmlGetEntityFromTable(table, name);
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if (ret != NULL)
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return(ret);
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}
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if ((doc->extSubset != NULL) && (doc->extSubset->pentities != NULL)) {
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table = (xmlEntitiesTablePtr) doc->extSubset->pentities;
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return(xmlGetEntityFromTable(table, name));
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}
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return(NULL);
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}
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/**
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* xmlGetDtdEntity:
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* @doc: the document referencing the entity
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* @name: the entity name
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*
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* Do an entity lookup in the DTD entity hash table and
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* returns the corresponding entity, if found.
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* Note: the first argument is the document node, not the DTD node.
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*
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* Returns A pointer to the entity structure or NULL if not found.
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*/
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xmlEntityPtr
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xmlGetDtdEntity(xmlDocPtr doc, const xmlChar *name) {
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xmlEntitiesTablePtr table;
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if (doc == NULL)
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return(NULL);
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if ((doc->extSubset != NULL) && (doc->extSubset->entities != NULL)) {
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table = (xmlEntitiesTablePtr) doc->extSubset->entities;
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return(xmlGetEntityFromTable(table, name));
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}
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return(NULL);
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}
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/**
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* xmlGetDocEntity:
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* @doc: the document referencing the entity
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* @name: the entity name
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*
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* Do an entity lookup in the document entity hash table and
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* returns the corresponding entity, otherwise a lookup is done
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* in the predefined entities too.
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*
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* Returns A pointer to the entity structure or NULL if not found.
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*/
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xmlEntityPtr
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xmlGetDocEntity(const xmlDoc *doc, const xmlChar *name) {
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xmlEntityPtr cur;
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xmlEntitiesTablePtr table;
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if (doc != NULL) {
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if ((doc->intSubset != NULL) && (doc->intSubset->entities != NULL)) {
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table = (xmlEntitiesTablePtr) doc->intSubset->entities;
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cur = xmlGetEntityFromTable(table, name);
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if (cur != NULL)
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return(cur);
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}
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if (doc->standalone != 1) {
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if ((doc->extSubset != NULL) &&
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(doc->extSubset->entities != NULL)) {
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table = (xmlEntitiesTablePtr) doc->extSubset->entities;
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cur = xmlGetEntityFromTable(table, name);
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if (cur != NULL)
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return(cur);
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}
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}
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}
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return(xmlGetPredefinedEntity(name));
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}
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/*
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* Macro used to grow the current buffer.
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*/
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#define growBufferReentrant() { \
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xmlChar *tmp; \
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size_t new_size = buffer_size * 2; \
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if (new_size < buffer_size) goto mem_error; \
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tmp = (xmlChar *) xmlRealloc(buffer, new_size); \
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if (tmp == NULL) goto mem_error; \
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buffer = tmp; \
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buffer_size = new_size; \
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}
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/**
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* xmlEncodeEntitiesInternal:
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* @doc: the document containing the string
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* @input: A string to convert to XML.
|
|
* @attr: are we handling an attribute value
|
|
*
|
|
* Do a global encoding of a string, replacing the predefined entities
|
|
* and non ASCII values with their entities and CharRef counterparts.
|
|
* Contrary to xmlEncodeEntities, this routine is reentrant, and result
|
|
* must be deallocated.
|
|
*
|
|
* Returns A newly allocated string with the substitution done.
|
|
*/
|
|
static xmlChar *
|
|
xmlEncodeEntitiesInternal(xmlDocPtr doc, const xmlChar *input, int attr) {
|
|
const xmlChar *cur = input;
|
|
xmlChar *buffer = NULL;
|
|
xmlChar *out = NULL;
|
|
size_t buffer_size = 0;
|
|
int html = 0;
|
|
|
|
if (input == NULL) return(NULL);
|
|
if (doc != NULL)
|
|
html = (doc->type == XML_HTML_DOCUMENT_NODE);
|
|
|
|
/*
|
|
* allocate an translation buffer.
|
|
*/
|
|
buffer_size = 1000;
|
|
buffer = (xmlChar *) xmlMalloc(buffer_size);
|
|
if (buffer == NULL)
|
|
return(NULL);
|
|
out = buffer;
|
|
|
|
while (*cur != '\0') {
|
|
size_t indx = out - buffer;
|
|
if (indx + 100 > buffer_size) {
|
|
|
|
growBufferReentrant();
|
|
out = &buffer[indx];
|
|
}
|
|
|
|
/*
|
|
* By default one have to encode at least '<', '>', '"' and '&' !
|
|
*/
|
|
if (*cur == '<') {
|
|
const xmlChar *end;
|
|
|
|
/*
|
|
* Special handling of server side include in HTML attributes
|
|
*/
|
|
if (html && attr &&
|
|
(cur[1] == '!') && (cur[2] == '-') && (cur[3] == '-') &&
|
|
((end = xmlStrstr(cur, BAD_CAST "-->")) != NULL)) {
|
|
while (cur != end) {
|
|
*out++ = *cur++;
|
|
indx = out - buffer;
|
|
if (indx + 100 > buffer_size) {
|
|
growBufferReentrant();
|
|
out = &buffer[indx];
|
|
}
|
|
}
|
|
*out++ = *cur++;
|
|
*out++ = *cur++;
|
|
*out++ = *cur++;
|
|
continue;
|
|
}
|
|
*out++ = '&';
|
|
*out++ = 'l';
|
|
*out++ = 't';
|
|
*out++ = ';';
|
|
} else if (*cur == '>') {
|
|
*out++ = '&';
|
|
*out++ = 'g';
|
|
*out++ = 't';
|
|
*out++ = ';';
|
|
} else if (*cur == '&') {
|
|
/*
|
|
* Special handling of &{...} construct from HTML 4, see
|
|
* http://www.w3.org/TR/html401/appendix/notes.html#h-B.7.1
|
|
*/
|
|
if (html && attr && (cur[1] == '{') &&
|
|
(strchr((const char *) cur, '}'))) {
|
|
while (*cur != '}') {
|
|
*out++ = *cur++;
|
|
indx = out - buffer;
|
|
if (indx + 100 > buffer_size) {
|
|
growBufferReentrant();
|
|
out = &buffer[indx];
|
|
}
|
|
}
|
|
*out++ = *cur++;
|
|
continue;
|
|
}
|
|
*out++ = '&';
|
|
*out++ = 'a';
|
|
*out++ = 'm';
|
|
*out++ = 'p';
|
|
*out++ = ';';
|
|
} else if (((*cur >= 0x20) && (*cur < 0x80)) ||
|
|
(*cur == '\n') || (*cur == '\t') || ((html) && (*cur == '\r'))) {
|
|
/*
|
|
* default case, just copy !
|
|
*/
|
|
*out++ = *cur;
|
|
} else if (*cur >= 0x80) {
|
|
if (((doc != NULL) && (doc->encoding != NULL)) || (html)) {
|
|
/*
|
|
* Bjørn Reese <br@sseusa.com> provided the patch
|
|
xmlChar xc;
|
|
xc = (*cur & 0x3F) << 6;
|
|
if (cur[1] != 0) {
|
|
xc += *(++cur) & 0x3F;
|
|
*out++ = xc;
|
|
} else
|
|
*/
|
|
*out++ = *cur;
|
|
} else {
|
|
/*
|
|
* We assume we have UTF-8 input.
|
|
* It must match either:
|
|
* 110xxxxx 10xxxxxx
|
|
* 1110xxxx 10xxxxxx 10xxxxxx
|
|
* 11110xxx 10xxxxxx 10xxxxxx 10xxxxxx
|
|
* That is:
|
|
* cur[0] is 11xxxxxx
|
|
* cur[1] is 10xxxxxx
|
|
* cur[2] is 10xxxxxx if cur[0] is 111xxxxx
|
|
* cur[3] is 10xxxxxx if cur[0] is 1111xxxx
|
|
* cur[0] is not 11111xxx
|
|
*/
|
|
char buf[13], *ptr;
|
|
int val, l;
|
|
|
|
l = 4;
|
|
val = xmlGetUTF8Char(cur, &l);
|
|
if (val < 0) {
|
|
val = 0xFFFD;
|
|
cur++;
|
|
} else {
|
|
if (!IS_CHAR(val))
|
|
val = 0xFFFD;
|
|
cur += l;
|
|
}
|
|
/*
|
|
* We could do multiple things here. Just save as a char ref
|
|
*/
|
|
snprintf(buf, sizeof(buf), "&#x%X;", val);
|
|
buf[sizeof(buf) - 1] = 0;
|
|
ptr = buf;
|
|
while (*ptr != 0) *out++ = *ptr++;
|
|
continue;
|
|
}
|
|
} else if (IS_BYTE_CHAR(*cur)) {
|
|
char buf[11], *ptr;
|
|
|
|
snprintf(buf, sizeof(buf), "&#%d;", *cur);
|
|
buf[sizeof(buf) - 1] = 0;
|
|
ptr = buf;
|
|
while (*ptr != 0) *out++ = *ptr++;
|
|
}
|
|
cur++;
|
|
}
|
|
*out = 0;
|
|
return(buffer);
|
|
|
|
mem_error:
|
|
xmlFree(buffer);
|
|
return(NULL);
|
|
}
|
|
|
|
/**
|
|
* xmlEncodeAttributeEntities:
|
|
* @doc: the document containing the string
|
|
* @input: A string to convert to XML.
|
|
*
|
|
* Do a global encoding of a string, replacing the predefined entities
|
|
* and non ASCII values with their entities and CharRef counterparts for
|
|
* attribute values.
|
|
*
|
|
* Returns A newly allocated string with the substitution done.
|
|
*/
|
|
xmlChar *
|
|
xmlEncodeAttributeEntities(xmlDocPtr doc, const xmlChar *input) {
|
|
return xmlEncodeEntitiesInternal(doc, input, 1);
|
|
}
|
|
|
|
/**
|
|
* xmlEncodeEntitiesReentrant:
|
|
* @doc: the document containing the string
|
|
* @input: A string to convert to XML.
|
|
*
|
|
* Do a global encoding of a string, replacing the predefined entities
|
|
* and non ASCII values with their entities and CharRef counterparts.
|
|
* Contrary to xmlEncodeEntities, this routine is reentrant, and result
|
|
* must be deallocated.
|
|
*
|
|
* Returns A newly allocated string with the substitution done.
|
|
*/
|
|
xmlChar *
|
|
xmlEncodeEntitiesReentrant(xmlDocPtr doc, const xmlChar *input) {
|
|
return xmlEncodeEntitiesInternal(doc, input, 0);
|
|
}
|
|
|
|
/**
|
|
* xmlEncodeSpecialChars:
|
|
* @doc: the document containing the string
|
|
* @input: A string to convert to XML.
|
|
*
|
|
* Do a global encoding of a string, replacing the predefined entities
|
|
* this routine is reentrant, and result must be deallocated.
|
|
*
|
|
* Returns A newly allocated string with the substitution done.
|
|
*/
|
|
xmlChar *
|
|
xmlEncodeSpecialChars(const xmlDoc *doc ATTRIBUTE_UNUSED, const xmlChar *input) {
|
|
const xmlChar *cur = input;
|
|
xmlChar *buffer = NULL;
|
|
xmlChar *out = NULL;
|
|
size_t buffer_size = 0;
|
|
if (input == NULL) return(NULL);
|
|
|
|
/*
|
|
* allocate an translation buffer.
|
|
*/
|
|
buffer_size = 1000;
|
|
buffer = (xmlChar *) xmlMalloc(buffer_size);
|
|
if (buffer == NULL)
|
|
return(NULL);
|
|
out = buffer;
|
|
|
|
while (*cur != '\0') {
|
|
size_t indx = out - buffer;
|
|
if (indx + 10 > buffer_size) {
|
|
|
|
growBufferReentrant();
|
|
out = &buffer[indx];
|
|
}
|
|
|
|
/*
|
|
* By default one have to encode at least '<', '>', '"' and '&' !
|
|
*/
|
|
if (*cur == '<') {
|
|
*out++ = '&';
|
|
*out++ = 'l';
|
|
*out++ = 't';
|
|
*out++ = ';';
|
|
} else if (*cur == '>') {
|
|
*out++ = '&';
|
|
*out++ = 'g';
|
|
*out++ = 't';
|
|
*out++ = ';';
|
|
} else if (*cur == '&') {
|
|
*out++ = '&';
|
|
*out++ = 'a';
|
|
*out++ = 'm';
|
|
*out++ = 'p';
|
|
*out++ = ';';
|
|
} else if (*cur == '"') {
|
|
*out++ = '&';
|
|
*out++ = 'q';
|
|
*out++ = 'u';
|
|
*out++ = 'o';
|
|
*out++ = 't';
|
|
*out++ = ';';
|
|
} else if (*cur == '\r') {
|
|
*out++ = '&';
|
|
*out++ = '#';
|
|
*out++ = '1';
|
|
*out++ = '3';
|
|
*out++ = ';';
|
|
} else {
|
|
/*
|
|
* Works because on UTF-8, all extended sequences cannot
|
|
* result in bytes in the ASCII range.
|
|
*/
|
|
*out++ = *cur;
|
|
}
|
|
cur++;
|
|
}
|
|
*out = 0;
|
|
return(buffer);
|
|
|
|
mem_error:
|
|
xmlFree(buffer);
|
|
return(NULL);
|
|
}
|
|
|
|
/**
|
|
* xmlCreateEntitiesTable:
|
|
*
|
|
* create and initialize an empty entities hash table.
|
|
* This really doesn't make sense and should be deprecated
|
|
*
|
|
* Returns the xmlEntitiesTablePtr just created or NULL in case of error.
|
|
*/
|
|
xmlEntitiesTablePtr
|
|
xmlCreateEntitiesTable(void) {
|
|
return((xmlEntitiesTablePtr) xmlHashCreate(0));
|
|
}
|
|
|
|
/**
|
|
* xmlFreeEntityWrapper:
|
|
* @entity: An entity
|
|
* @name: its name
|
|
*
|
|
* Deallocate the memory used by an entities in the hash table.
|
|
*/
|
|
static void
|
|
xmlFreeEntityWrapper(void *entity, const xmlChar *name ATTRIBUTE_UNUSED) {
|
|
if (entity != NULL)
|
|
xmlFreeEntity((xmlEntityPtr) entity);
|
|
}
|
|
|
|
/**
|
|
* xmlFreeEntitiesTable:
|
|
* @table: An entity table
|
|
*
|
|
* Deallocate the memory used by an entities hash table.
|
|
*/
|
|
void
|
|
xmlFreeEntitiesTable(xmlEntitiesTablePtr table) {
|
|
xmlHashFree(table, xmlFreeEntityWrapper);
|
|
}
|
|
|
|
/**
|
|
* xmlCopyEntity:
|
|
* @ent: An entity
|
|
*
|
|
* Build a copy of an entity
|
|
*
|
|
* Returns the new xmlEntitiesPtr or NULL in case of error.
|
|
*/
|
|
static void *
|
|
xmlCopyEntity(void *payload, const xmlChar *name ATTRIBUTE_UNUSED) {
|
|
xmlEntityPtr ent = (xmlEntityPtr) payload;
|
|
xmlEntityPtr cur;
|
|
|
|
cur = (xmlEntityPtr) xmlMalloc(sizeof(xmlEntity));
|
|
if (cur == NULL)
|
|
return(NULL);
|
|
memset(cur, 0, sizeof(xmlEntity));
|
|
cur->type = XML_ENTITY_DECL;
|
|
|
|
cur->etype = ent->etype;
|
|
if (ent->name != NULL) {
|
|
cur->name = xmlStrdup(ent->name);
|
|
if (cur->name == NULL)
|
|
goto error;
|
|
}
|
|
if (ent->ExternalID != NULL) {
|
|
cur->ExternalID = xmlStrdup(ent->ExternalID);
|
|
if (cur->ExternalID == NULL)
|
|
goto error;
|
|
}
|
|
if (ent->SystemID != NULL) {
|
|
cur->SystemID = xmlStrdup(ent->SystemID);
|
|
if (cur->SystemID == NULL)
|
|
goto error;
|
|
}
|
|
if (ent->content != NULL) {
|
|
cur->content = xmlStrdup(ent->content);
|
|
if (cur->content == NULL)
|
|
goto error;
|
|
}
|
|
if (ent->orig != NULL) {
|
|
cur->orig = xmlStrdup(ent->orig);
|
|
if (cur->orig == NULL)
|
|
goto error;
|
|
}
|
|
if (ent->URI != NULL) {
|
|
cur->URI = xmlStrdup(ent->URI);
|
|
if (cur->URI == NULL)
|
|
goto error;
|
|
}
|
|
return(cur);
|
|
|
|
error:
|
|
xmlFreeEntity(cur);
|
|
return(NULL);
|
|
}
|
|
|
|
/**
|
|
* xmlCopyEntitiesTable:
|
|
* @table: An entity table
|
|
*
|
|
* Build a copy of an entity table.
|
|
*
|
|
* Returns the new xmlEntitiesTablePtr or NULL in case of error.
|
|
*/
|
|
xmlEntitiesTablePtr
|
|
xmlCopyEntitiesTable(xmlEntitiesTablePtr table) {
|
|
return(xmlHashCopySafe(table, xmlCopyEntity, xmlFreeEntityWrapper));
|
|
}
|
|
|
|
#ifdef LIBXML_OUTPUT_ENABLED
|
|
|
|
/**
|
|
* xmlDumpEntityDecl:
|
|
* @buf: An XML buffer.
|
|
* @ent: An entity table
|
|
*
|
|
* This will dump the content of the entity table as an XML DTD definition
|
|
*/
|
|
void
|
|
xmlDumpEntityDecl(xmlBufferPtr buf, xmlEntityPtr ent) {
|
|
xmlSaveCtxtPtr save;
|
|
|
|
if ((buf == NULL) || (ent == NULL))
|
|
return;
|
|
|
|
save = xmlSaveToBuffer(buf, NULL, 0);
|
|
xmlSaveTree(save, (xmlNodePtr) ent);
|
|
if (xmlSaveFinish(save) != XML_ERR_OK)
|
|
xmlFree(xmlBufferDetach(buf));
|
|
}
|
|
|
|
/**
|
|
* xmlDumpEntityDeclScan:
|
|
* @ent: An entity table
|
|
* @buf: An XML buffer.
|
|
*
|
|
* When using the hash table scan function, arguments need to be reversed
|
|
*/
|
|
static void
|
|
xmlDumpEntityDeclScan(void *ent, void *save,
|
|
const xmlChar *name ATTRIBUTE_UNUSED) {
|
|
xmlSaveTree(save, ent);
|
|
}
|
|
|
|
/**
|
|
* xmlDumpEntitiesTable:
|
|
* @buf: An XML buffer.
|
|
* @table: An entity table
|
|
*
|
|
* This will dump the content of the entity table as an XML DTD definition
|
|
*/
|
|
void
|
|
xmlDumpEntitiesTable(xmlBufferPtr buf, xmlEntitiesTablePtr table) {
|
|
xmlSaveCtxtPtr save;
|
|
|
|
if ((buf == NULL) || (table == NULL))
|
|
return;
|
|
|
|
save = xmlSaveToBuffer(buf, NULL, 0);
|
|
xmlHashScan(table, xmlDumpEntityDeclScan, save);
|
|
if (xmlSaveFinish(save) != XML_ERR_OK)
|
|
xmlFree(xmlBufferDetach(buf));
|
|
}
|
|
#endif /* LIBXML_OUTPUT_ENABLED */
|