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|
/* -*- Mode: c; c-basic-offset: 2 -*-
*
* raptor_libxml.c - Raptor libxml functions
*
* $Id$
*
* Copyright (C) 2000-2004, David Beckett http://purl.org/net/dajobe/
* Institute for Learning and Research Technology http://www.ilrt.bristol.ac.uk/
* University of Bristol, UK http://www.bristol.ac.uk/
*
* This package is Free Software and part of Redland http://librdf.org/
*
* It is licensed under the following three licenses as alternatives:
* 1. GNU Lesser General Public License (LGPL) V2.1 or any newer version
* 2. GNU General Public License (GPL) V2 or any newer version
* 3. Apache License, V2.0 or any newer version
*
* You may not use this file except in compliance with at least one of
* the above three licenses.
*
* See LICENSE.html or LICENSE.txt at the top of this package for the
* complete terms and further detail along with the license texts for
* the licenses in COPYING.LIB, COPYING and LICENSE-2.0.txt respectively.
*
*
*/
#ifdef HAVE_CONFIG_H
#include <raptor_config.h>
#endif
#ifdef WIN32
#include <win32_raptor_config.h>
#endif
#include <stdio.h>
#include <string.h>
#include <ctype.h>
#include <stdarg.h>
#ifdef HAVE_ERRNO_H
#include <errno.h>
#endif
#ifdef HAVE_STDLIB_H
#include <stdlib.h>
#endif
/* Raptor includes */
#include "raptor.h"
#include "raptor_internal.h"
#ifdef RAPTOR_XML_LIBXML
/* prototypes */
static void raptor_libxml_warning(void *context, const char *msg, ...);
static void raptor_libxml_error(void *context, const char *msg, ...);
static void raptor_libxml_fatal_error(void *context, const char *msg, ...);
static const char* xml_warning_prefix="XML parser warning - ";
static const char* xml_error_prefix="XML parser error - ";
static const char* xml_fatal_error_prefix="XML parser fatal error - ";
static const char* xml_validation_error_prefix="XML parser validation error - ";
static const char* xml_validation_warning_prefix="XML parser validation warning - ";
#ifdef HAVE_LIBXML_SAX2_H
/* SAX2 - 2.6.0 or later */
#define libxml2_internalSubset xmlSAX2InternalSubset
#define libxml2_externalSubset xmlSAX2ExternalSubset
#define libxml2_isStandalone xmlSAX2IsStandalone
#define libxml2_hasInternalSubset xmlSAX2HasInternalSubset
#define libxml2_hasExternalSubset xmlSAX2HasExternalSubset
#define libxml2_resolveEntity xmlSAX2ResolveEntity
#define libxml2_getEntity xmlSAX2GetEntity
#define libxml2_getParameterEntity xmlSAX2GetParameterEntity
#define libxml2_entityDecl xmlSAX2EntityDecl
#define libxml2_unparsedEntityDecl xmlSAX2UnparsedEntityDecl
#define libxml2_startDocument xmlSAX2StartDocument
#define libxml2_endDocument xmlSAX2EndDocument
#else
/* SAX1 - before libxml2 2.6.0 */
#define libxml2_internalSubset internalSubset
#define libxml2_externalSubset externalSubset
#define libxml2_isStandalone isStandalone
#define libxml2_hasInternalSubset hasInternalSubset
#define libxml2_hasExternalSubset hasExternalSubset
#define libxml2_resolveEntity resolveEntity
#define libxml2_getEntity getEntity
#define libxml2_getParameterEntity getParameterEntity
#define libxml2_entityDecl entityDecl
#define libxml2_unparsedEntityDecl unparsedEntityDecl
#define libxml2_startDocument startDocument
#define libxml2_endDocument endDocument
#endif
static void
raptor_libxml_internalSubset(void *ctx, const xmlChar *name,
const xmlChar *ExternalID, const xmlChar *SystemID) {
raptor_parser* rdf_parser=(raptor_parser*)ctx;
libxml2_internalSubset(raptor_get_libxml_context(rdf_parser), name, ExternalID, SystemID);
}
#ifdef RAPTOR_LIBXML_XMLSAXHANDLER_EXTERNALSUBSET
static void
raptor_libxml_externalSubset(void *ctx, const xmlChar *name,
const xmlChar *ExternalID, const xmlChar *SystemID)
{
raptor_parser* rdf_parser=(raptor_parser*)ctx;
libxml2_externalSubset(raptor_get_libxml_context(rdf_parser), name, ExternalID, SystemID);
}
#endif
static int
raptor_libxml_isStandalone (void *ctx)
{
raptor_parser* rdf_parser=(raptor_parser*)ctx;
return libxml2_isStandalone(raptor_get_libxml_context(rdf_parser));
}
static int
raptor_libxml_hasInternalSubset (void *ctx)
{
raptor_parser* rdf_parser=(raptor_parser*)ctx;
return libxml2_hasInternalSubset(raptor_get_libxml_context(rdf_parser));
}
static int
raptor_libxml_hasExternalSubset (void *ctx)
{
raptor_parser* rdf_parser=(raptor_parser*)ctx;
return libxml2_hasExternalSubset(raptor_get_libxml_context(rdf_parser));
}
static xmlParserInputPtr
raptor_libxml_resolveEntity(void *ctx,
const xmlChar *publicId, const xmlChar *systemId) {
raptor_parser* rdf_parser=(raptor_parser*)ctx;
return libxml2_resolveEntity(raptor_get_libxml_context(rdf_parser), publicId, systemId);
}
static xmlEntityPtr
raptor_libxml_getEntity(void *ctx, const xmlChar *name) {
raptor_parser* rdf_parser=(raptor_parser*)ctx;
return libxml2_getEntity(raptor_get_libxml_context(rdf_parser), name);
}
static xmlEntityPtr
raptor_libxml_getParameterEntity(void *ctx, const xmlChar *name) {
raptor_parser* rdf_parser=(raptor_parser*)ctx;
return libxml2_getParameterEntity(raptor_get_libxml_context(rdf_parser), name);
}
static void
raptor_libxml_entityDecl(void *ctx, const xmlChar *name, int type,
const xmlChar *publicId, const xmlChar *systemId,
xmlChar *content) {
raptor_parser* rdf_parser=(raptor_parser*)ctx;
libxml2_entityDecl(raptor_get_libxml_context(rdf_parser), name, type, publicId, systemId, content);
}
static void
raptor_libxml_unparsedEntityDecl(void *ctx, const xmlChar *name,
const xmlChar *publicId, const xmlChar *systemId,
const xmlChar *notationName) {
raptor_parser* rdf_parser=(raptor_parser*)ctx;
libxml2_unparsedEntityDecl(raptor_get_libxml_context(rdf_parser), name, publicId, systemId, notationName);
}
static void
raptor_libxml_startDocument(void *ctx) {
raptor_parser* rdf_parser=(raptor_parser*)ctx;
libxml2_startDocument(raptor_get_libxml_context(rdf_parser));
}
static void
raptor_libxml_endDocument(void *ctx) {
raptor_parser* rdf_parser=(raptor_parser*)ctx;
xmlParserCtxtPtr xc=raptor_get_libxml_context(rdf_parser);
libxml2_endDocument(raptor_get_libxml_context(rdf_parser));
if(xc->myDoc) {
xmlFreeDoc(xc->myDoc);
xc->myDoc=NULL;
}
}
static void
raptor_libxml_set_document_locator (void *ctx, xmlSAXLocatorPtr loc) {
raptor_parser* rdf_parser=(raptor_parser*)ctx;
raptor_set_libxml_document_locator(rdf_parser, loc);
}
void
raptor_libxml_update_document_locator (raptor_parser *rdf_parser) {
/* for storing error info */
raptor_locator *locator=raptor_get_locator(rdf_parser);
xmlSAXLocatorPtr loc=raptor_get_libxml_document_locator(rdf_parser);
xmlParserCtxtPtr xc=raptor_get_libxml_context(rdf_parser);
if(xc && xc->inSubset)
return;
locator->line= -1;
locator->column= -1;
if(!xc)
return;
if(loc) {
locator->line=loc->getLineNumber(xc);
/* Seems to be broken */
/* locator->column=loc->getColumnNumber(xc); */
}
}
static void
raptor_libxml_warning(void *ctx, const char *msg, ...)
{
raptor_parser* rdf_parser;
va_list args;
int prefix_length=strlen(xml_warning_prefix);
int length;
char *nmsg;
/* Work around libxml2 bug - sometimes the sax2->error
* returns a ctx, sometimes the userdata
*/
if(((raptor_parser*)ctx)->magic == RAPTOR_LIBXML_MAGIC)
rdf_parser=(raptor_parser*)ctx;
else
/* ctx is not userData */
rdf_parser=(raptor_parser*)((xmlParserCtxtPtr)ctx)->userData;
va_start(args, msg);
raptor_libxml_update_document_locator(rdf_parser);
length=prefix_length+strlen(msg)+1;
nmsg=(char*)RAPTOR_MALLOC(cstring, length);
if(!nmsg) {
/* just pass on, might be out of memory error */
raptor_parser_warning_varargs(rdf_parser, msg, args);
} else {
strcpy(nmsg, xml_warning_prefix);
strcpy(nmsg+prefix_length, msg);
if(nmsg[length-2]=='\n')
nmsg[length-2]='\0';
raptor_parser_warning_varargs(rdf_parser, nmsg, args);
RAPTOR_FREE(cstring,nmsg);
}
va_end(args);
}
static void
raptor_libxml_error(void *ctx, const char *msg, ...)
{
raptor_parser* rdf_parser;
va_list args;
int prefix_length=strlen(xml_error_prefix);
int length;
char *nmsg;
/* Work around libxml2 bug - sometimes the sax2->error
* returns a ctx, sometimes the userdata
*/
if(((raptor_parser*)ctx)->magic == RAPTOR_LIBXML_MAGIC)
rdf_parser=(raptor_parser*)ctx;
else
/* ctx is not userData */
rdf_parser=(raptor_parser*)((xmlParserCtxtPtr)ctx)->userData;
va_start(args, msg);
raptor_libxml_update_document_locator(rdf_parser);
length=prefix_length+strlen(msg)+1;
nmsg=(char*)RAPTOR_MALLOC(cstring, length);
if(!nmsg) {
/* just pass on, might be out of memory error */
raptor_parser_error_varargs(rdf_parser, nmsg, args);
} else {
strcpy(nmsg, xml_error_prefix);
strcpy(nmsg+prefix_length, msg);
if(nmsg[length-1]=='\n')
nmsg[length-1]='\0';
raptor_parser_error_varargs(rdf_parser, nmsg, args);
RAPTOR_FREE(cstring,nmsg);
}
va_end(args);
}
static void
raptor_libxml_fatal_error(void *ctx, const char *msg, ...)
{
va_list args;
raptor_parser* rdf_parser=(raptor_parser*)ctx;
int prefix_length=strlen(xml_fatal_error_prefix);
int length;
char *nmsg;
va_start(args, msg);
raptor_libxml_update_document_locator(rdf_parser);
length=prefix_length+strlen(msg)+1;
nmsg=(char*)RAPTOR_MALLOC(cstring, length);
if(!nmsg) {
/* just pass on, might be out of memory error */
raptor_parser_fatal_error_varargs(rdf_parser, nmsg, args);
} else {
strcpy(nmsg, xml_error_prefix);
strcpy(nmsg+prefix_length, msg);
if(nmsg[length-2]=='\n')
nmsg[length-2]='\0';
raptor_parser_fatal_error_varargs(rdf_parser, nmsg, args);
RAPTOR_FREE(cstring,nmsg);
}
va_end(args);
}
void
raptor_libxml_validation_error(void *ctx, const char *msg, ...)
{
va_list args;
raptor_parser* rdf_parser=(raptor_parser*)ctx;
int prefix_length=strlen(xml_validation_error_prefix);
int length;
char *nmsg;
va_start(args, msg);
raptor_libxml_update_document_locator(rdf_parser);
length=prefix_length+strlen(msg)+1;
nmsg=(char*)RAPTOR_MALLOC(cstring, length);
if(!nmsg) {
/* just pass on, might be out of memory error */
raptor_parser_fatal_error_varargs(rdf_parser, nmsg, args);
} else {
strcpy(nmsg, xml_validation_error_prefix);
strcpy(nmsg+prefix_length, msg);
if(nmsg[length-2]=='\n')
nmsg[length-2]='\0';
raptor_parser_fatal_error_varargs(rdf_parser, nmsg, args);
RAPTOR_FREE(cstring,nmsg);
}
va_end(args);
}
void
raptor_libxml_validation_warning(void *ctx, const char *msg, ...)
{
va_list args;
raptor_parser* rdf_parser=(raptor_parser*)ctx;
int prefix_length=strlen(xml_validation_warning_prefix);
int length;
char *nmsg;
va_start(args, msg);
raptor_libxml_update_document_locator(rdf_parser);
length=prefix_length+strlen(msg)+1;
nmsg=(char*)RAPTOR_MALLOC(cstring, length);
if(!nmsg) {
/* just pass on, might be out of memory error */
raptor_parser_warning_varargs(rdf_parser, nmsg, args);
} else {
strcpy(nmsg, xml_validation_warning_prefix);
strcpy(nmsg+prefix_length, msg);
if(nmsg[length-2]=='\n')
nmsg[length-2]='\0';
raptor_parser_fatal_error_varargs(rdf_parser, nmsg, args);
RAPTOR_FREE(cstring,nmsg);
}
va_end(args);
}
#ifdef RAPTOR_LIBXML_MY_ENTITIES
/*
* raptor_free_xml_entity : free an entity record.
*/
static void
raptor_libxml_free_entity(raptor_libxml_entity *ent) {
if (!ent)
return;
if (ent->entity.name)
RAPTOR_FREE(cstring, (char*)ent->entity.name);
if (ent->entity.ExternalID)
RAPTOR_FREE(cstring, (char*)ent->entity.ExternalID);
if (ent->entity.SystemID)
RAPTOR_FREE(cstring, (char*)ent->entity.SystemID);
if (ent->entity.content)
RAPTOR_FREE(cstring, ent->entity.content);
RAPTOR_FREE(raptor_libxml_entity, ent);
}
static raptor_libxml_entity*
raptor_libxml_new_entity(raptor_parser* rdf_parser,
const xmlChar *name, int type,
const xmlChar *ExternalID,
const xmlChar *SystemID, const xmlChar *content)
{
raptor_libxml_entity *ent;
ent=(raptor_libxml_entity*)RAPTOR_CALLOC(raptor_libxml_entity, 1,
sizeof(raptor_libxml_entity));
if(!ent) {
raptor_parser_fatal_error(rdf_parser, "Out of memory");
return NULL;
}
RAPTOR_ENTITY_NAME_LENGTH(ent)=strlen(name);
ent->entity.name = RAPTOR_MALLOC(cstring, RAPTOR_ENTITY_NAME_LENGTH(ent)+1);
if(!ent->entity.name) {
raptor_libxml_free_entity(ent);
raptor_parser_fatal_error(rdf_parser, "Out of memory");
return NULL;
}
strncpy((char*)ent->entity.name, name, RAPTOR_ENTITY_NAME_LENGTH(ent) +1); /* +1 for \0 */
#ifdef RAPTOR_LIBXML_ENTITY_ETYPE
ent->entity.type = XML_ENTITY_DECL;
ent->entity.etype = type;
#else
ent->entity.type = type;
#endif
if (ExternalID) {
ent->entity.ExternalID = RAPTOR_MALLOC(cstring, strlen(ExternalID)+1);
if(!ent->entity.ExternalID) {
raptor_libxml_free_entity(ent);
raptor_parser_fatal_error(rdf_parser, "Out of memory");
return NULL;
}
strcpy((char*)ent->entity.ExternalID, ExternalID);
} else
ent->entity.ExternalID = NULL;
if (SystemID) {
ent->entity.SystemID = RAPTOR_MALLOC(cstring, strlen(SystemID)+1);
if(!ent->entity.SystemID) {
raptor_libxml_free_entity(ent);
raptor_parser_fatal_error(rdf_parser, "Out of memory");
return NULL;
}
strcpy((char*)ent->entity.SystemID, SystemID);
} else
ent->entity.SystemID = NULL;
if (content) {
ent->entity.length = strlen(content);
ent->entity.content = RAPTOR_MALLOC(cstring, ent->entity.length+1);
if(!ent->entity.content) {
raptor_libxml_free_entity(ent);
raptor_parser_fatal_error(rdf_parser, "Out of memory");
return NULL;
}
strncpy(ent->entity.content, content, ent->entity.length+1);
} else {
ent->entity.length = 0;
ent->entity.content = NULL;
}
return ent;
}
void
raptor_libxml_libxml_free_entities(raptor_parser *rdf_parser)
{
raptor_libxml_entity *cur, *next;
cur=raptor_libxml_get_entities(rdf_parser);
while(cur) {
next=cur->next;
raptor_libxml_free_entity(cur);
cur=next;
}
}
static void
raptor_libxml_entity_decl(void *ctx,
const xmlChar *name, int type,
const xmlChar *publicId, const xmlChar *systemId,
xmlChar *content)
{
raptor_parser* rdf_parser=(raptor_parser*)ctx;
raptor_libxml_entity *ent;
ent=raptor_libxml_new_entity(rdf_parser,
name, type, publicId, systemId, content);
if(!ent)
return;
ent->next=raptor_libxml_get_entities(rdf_parser);
raptor_set_libxml_entities(rdf_parser,ent);
}
static xmlEntityPtr
raptor_libxml_get_entity(void *ctx, const xmlChar *name) {
raptor_parser* rdf_parser=(raptor_parser*)ctx;
raptor_libxml_entity *ent;
ent=raptor_libxml_get_entities(rdf_parser);
while(ent) {
if (!xmlStrcmp(ent->entity.name, name))
return &ent->entity;
ent=ent->next;
}
return xmlGetPredefinedEntity(name);
}
#endif
void
raptor_libxml_init(xmlSAXHandler *sax) {
sax->internalSubset = raptor_libxml_internalSubset;
sax->isStandalone = raptor_libxml_isStandalone;
sax->hasInternalSubset = raptor_libxml_hasInternalSubset;
sax->hasExternalSubset = raptor_libxml_hasExternalSubset;
sax->resolveEntity = raptor_libxml_resolveEntity;
sax->getEntity = raptor_libxml_getEntity;
sax->getParameterEntity = raptor_libxml_getParameterEntity;
sax->entityDecl = raptor_libxml_entityDecl;
sax->attributeDecl = NULL; /* attributeDecl */
sax->elementDecl = NULL; /* elementDecl */
sax->notationDecl = NULL; /* notationDecl */
sax->unparsedEntityDecl = raptor_libxml_unparsedEntityDecl;
sax->setDocumentLocator=raptor_libxml_set_document_locator;
sax->startDocument = raptor_libxml_startDocument;
sax->endDocument = raptor_libxml_endDocument;
sax->startElement=raptor_xml_start_element_handler;
sax->endElement=raptor_xml_end_element_handler;
sax->reference = NULL; /* reference */
sax->characters=raptor_xml_characters_handler;
sax->cdataBlock = raptor_xml_cdata_handler; /* like <![CDATA[...]> */
sax->ignorableWhitespace=raptor_xml_cdata_handler;
sax->processingInstruction = NULL; /* processingInstruction */
sax->comment = raptor_xml_comment_handler; /* comment */
sax->warning=raptor_libxml_warning;
sax->error=raptor_libxml_error;
sax->fatalError=raptor_libxml_fatal_error;
#ifdef RAPTOR_LIBXML_XMLSAXHANDLER_EXTERNALSUBSET
sax->externalSubset = raptor_libxml_externalSubset;
#endif
#ifdef RAPTOR_LIBXML_XMLSAXHANDLER_INITIALIZED
sax->initialized = 1;
#endif
#ifdef RAPTOR_LIBXML_MY_ENTITIES
sax->getEntity=raptor_libxml_get_entity;
sax->entityDecl=raptor_libxml_entity_decl;
#endif
}
void
raptor_libxml_free(xmlParserCtxtPtr xc) {
libxml2_endDocument(xc);
xmlFreeParserCtxt(xc);
}
/* end if RAPTOR_XML_LIBXML */
#endif
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