bool
decode_xmp (const std::string &xml, ImageSpec &spec)
{
#if DEBUG_XMP_READ
std::cerr << "XMP dump:\n---\n" << xml << "\n---\n";
#endif
if (! xml.length())
return true;
for (size_t startpos = 0, endpos = 0;
extract_middle (xml, endpos, "<rdf:Description", "</rdf:Description>", startpos, endpos); ) {
// Turn that middle section into an XML document
std::string rdf (xml, startpos, endpos-startpos); // scooch in
#if DEBUG_XMP_READ
std::cerr << "RDF is:\n---\n" << rdf << "\n---\n";
#endif
pugi::xml_document doc;
pugi::xml_parse_result parse_result = doc.load_buffer (&rdf[0], rdf.size());
if (! parse_result) {
#if DEBUG_XMP_READ
std::cerr << "Error parsing XML\n";
#endif
return true;
}
// Decode the contents of the XML document (it will recurse)
decode_xmp_node (doc.first_child(), spec);
}
return true;
}
bool
decode_xmp(const std::string& xml, ImageSpec& spec)
{
#if DEBUG_XMP_READ
std::cerr << "XMP dump:\n---\n" << xml << "\n---\n";
#endif
if (!xml.length())
return true;
for (size_t startpos = 0, endpos = 0;
extract_middle(xml, endpos, "<rdf:Description", "</rdf:Description>",
startpos, endpos);) {
// Turn that middle section into an XML document
std::string rdf(xml, startpos, endpos - startpos); // scooch in
#if DEBUG_XMP_READ
std::cerr << "RDF is:\n---\n" << rdf << "\n---\n";
#endif
pugi::xml_document doc;
pugi::xml_parse_result parse_result
= doc.load_buffer(&rdf[0], rdf.size(),
pugi::parse_default | pugi::parse_fragment);
if (!parse_result) {
#if DEBUG_XMP_READ
std::cerr << "Error parsing XML @" << parse_result.offset << ": "
<< parse_result.description() << "\n";
#endif
// Instead of returning early here if there were errors parsing
// the XML -- I have noticed that very minor XML malformations
// are common in XMP found in files -- hope for the best and
// go ahead and assume that maybe it managed to put something
// useful in the resulting document.
#if 0
return true;
#endif
}
// Decode the contents of the XML document (it will recurse)
decode_xmp_node(doc.first_child(), spec);
}
return true;
}
