bool XMLReader::isValid(const QString &_inFile)
{
LIBXML_TEST_VERSION
//reset the generic error handler
initGenericErrorDefaultFunc(NULL);
QString ErrorString;
//supply custom error handler
xmlSetStructuredErrorFunc(&ErrorString, XMLReader::xmlErrorHandler);
xmlParserCtxtPtr Context; /* the parser context */
xmlDocPtr Doc; /* the resulting document tree */
/* create a parser context */
Context = xmlNewParserCtxt();
if (Context == NULL)
throw exInvalidXML("Failed to allocate parser context");
QFile File(_inFile);
File.open(QIODevice::ReadOnly);
int FD = File.handle();
/* parse the file, activating the DTD validation option */
Doc = xmlCtxtReadFd(Context, FD, ".", NULL, XML_PARSE_DTDVALID);
/* check if parsing suceeded */
if (Doc == NULL)
throw exInvalidXML("Unable to read XML Buffer");
else
xmlFreeDoc(Doc);
/* free up the parser context */
xmlFreeParserCtxt(Context);
return true;
}
static bool
is_dtd_valid(FILE *input, const char *filename)
{
bool rc = true;
#if HAVE_LIBXML
xmlParserCtxtPtr ctx = NULL;
xmlDocPtr doc = NULL;
xmlDtdPtr dtd = NULL;
xmlValidCtxtPtr dtdctx;
xmlParserInputBufferPtr buffer;
int fd = fileno(input);
dtdctx = xmlNewValidCtxt();
ctx = xmlNewParserCtxt();
if (!ctx || !dtdctx)
abort();
buffer = xmlParserInputBufferCreateMem(&DTD_DATA_begin,
DTD_DATA_len,
XML_CHAR_ENCODING_UTF8);
if (!buffer) {
fprintf(stderr, "Failed to init buffer for DTD.\n");
abort();
}
dtd = xmlIOParseDTD(NULL, buffer, XML_CHAR_ENCODING_UTF8);
if (!dtd) {
fprintf(stderr, "Failed to parse DTD.\n");
abort();
}
doc = xmlCtxtReadFd(ctx, fd, filename, NULL, 0);
if (!doc) {
fprintf(stderr, "Failed to read XML\n");
abort();
}
rc = xmlValidateDtd(dtdctx, doc, dtd);
xmlFreeDoc(doc);
xmlFreeParserCtxt(ctx);
xmlFreeDtd(dtd);
xmlFreeValidCtxt(dtdctx);
/* xmlIOParseDTD consumes buffer */
if (lseek(fd, 0, SEEK_SET) != 0) {
fprintf(stderr, "Failed to reset fd, output would be garbage.\n");
abort();
}
#endif
return rc;
}
void load(const int fd, xml_node &node)
{
xmlDocPtr doc = xmlCtxtReadFd(ctx_, fd, url_, encoding_, options_);
load(doc, node);
}