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dom_parser: hack for parsing entities in attribute values. #1

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66 changes: 65 additions & 1 deletion src/lsmdomparser.c
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Original file line number Diff line number Diff line change
Expand Up @@ -262,6 +262,70 @@ typedef enum {
LSM_DOM_DOCUMENT_ERROR_INVALID_XML
} LsmDomDocumentError;

#define IN_LIBXML
#include <libxml/parserInternals.h>
#undef IN_LIBXML

static void
lsmDetectSAX2(xmlParserCtxtPtr ctxt) {
if (ctxt == NULL) return;
#ifdef LIBXML_SAX1_ENABLED
if ((ctxt->sax) && (ctxt->sax->initialized == XML_SAX2_MAGIC) &&
((ctxt->sax->startElementNs != NULL) ||
(ctxt->sax->endElementNs != NULL))) ctxt->sax2 = 1;
#else
ctxt->sax2 = 1;
#endif /* LIBXML_SAX1_ENABLED */

ctxt->str_xml = xmlDictLookup(ctxt->dict, BAD_CAST "xml", 3);
ctxt->str_xmlns = xmlDictLookup(ctxt->dict, BAD_CAST "xmlns", 5);
ctxt->str_xml_ns = xmlDictLookup(ctxt->dict, XML_XML_NAMESPACE, 36);
if ((ctxt->str_xml==NULL) || (ctxt->str_xmlns==NULL) ||
(ctxt->str_xml_ns == NULL)) {
xmlErrMemory(ctxt, NULL);
}
}

int lsmSAXUserParseMemory(xmlSAXHandlerPtr sax, void *user_data,
const char *buffer, int size) {
int ret = 0;
xmlParserCtxtPtr ctxt;

xmlInitParser();

ctxt = xmlCreateMemoryParserCtxt(buffer, size);

if (ctxt == NULL) return -1;
if (ctxt->sax != (xmlSAXHandlerPtr) &xmlDefaultSAXHandler)
xmlFree(ctxt->sax);
ctxt->sax = sax;
lsmDetectSAX2(ctxt);

if (user_data != NULL)
ctxt->userData = user_data;

xmlCtxtUseOptions(ctxt, XML_PARSE_NOENT);
xmlParseDocument(ctxt);

if (ctxt->wellFormed)
ret = 0;
else {
if (ctxt->errNo != 0)
ret = ctxt->errNo;
else
ret = -1;
}
if (sax != NULL)
ctxt->sax = NULL;
if (ctxt->myDoc != NULL) {
xmlFreeDoc(ctxt->myDoc);
ctxt->myDoc = NULL;
}
xmlFreeParserCtxt(ctxt);

return ret;
}

LsmDomDocument *
lsm_dom_document_new_from_memory (const void *buffer, int size, GError **error)
{
Expand All @@ -274,7 +338,7 @@ lsm_dom_document_new_from_memory (const void *buffer, int size, GError **error)
if (size < 0)
size = strlen (buffer);

if (xmlSAXUserParseMemory (&sax_handler, &state, buffer, size) < 0) {
if (lsmSAXUserParseMemory (&sax_handler, &state, buffer, size) < 0) {
if (state.document != NULL)
g_object_unref (state.document);
state.document = NULL;
Expand Down