Solved, if anyone need this, just do these little changes:
TFHppleElement.h
@property (nonatomic, copy, readonly) NSString *raw;
TFHppleElement.m
- (NSString *)raw
{
return [node objectForKey:@"raw"];
}
XPathQuery.m
NSDictionary *DictionaryForNode(xmlNodePtr currentNode, NSMutableDictionary *parentResult,BOOL parentContent)
{
...
xmlBufferPtr buffer = xmlBufferCreate();
xmlNodeDump(buffer, currentNode->doc, currentNode, 0, 0);
NSString *rawContent = [NSString stringWithCString:(const char *)buffer->content encoding:NSUTF8StringEncoding];
[resultForNode setObject:rawContent forKey:@"raw"];
xmlBufferFree(buffer);
return resultForNode;
}