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/*
* Copyright (c) 2010-2016 Isode Limited.
* All rights reserved.
* See the COPYING file for more information.
*/
#include <Swiften/Parser/ExpatParser.h>
#include <cassert>
#include <memory>
#include <string>
#include <expat.h>
#include <boost/numeric/conversion/cast.hpp>
#include <Swiften/Base/String.h>
#include <Swiften/Parser/XMLParserClient.h>
#pragma clang diagnostic ignored "-Wdisabled-macro-expansion"
namespace Swift {
static const char NAMESPACE_SEPARATOR = '\x01';
struct ExpatParser::Private {
XML_Parser parser_;
};
static void handleStartElement(void* parser, const XML_Char* name, const XML_Char** attributes) {
std::pair<std::string,std::string> nsTagPair = String::getSplittedAtFirst(name, NAMESPACE_SEPARATOR);
if (nsTagPair.second == "") {
nsTagPair.second = nsTagPair.first;
nsTagPair.first = "";
}
AttributeMap attributeValues;
const XML_Char** currentAttribute = attributes;
while (*currentAttribute) {
std::pair<std::string,std::string> nsAttributePair = String::getSplittedAtFirst(*currentAttribute, NAMESPACE_SEPARATOR);
if (nsAttributePair.second == "") {
nsAttributePair.second = nsAttributePair.first;
nsAttributePair.first = "";
}
attributeValues.addAttribute(nsAttributePair.second, nsAttributePair.first, std::string(*(currentAttribute+1)));
currentAttribute += 2;
}
static_cast<XMLParser*>(parser)->getClient()->handleStartElement(nsTagPair.second, nsTagPair.first, attributeValues);
}
static void handleEndElement(void* parser, const XML_Char* name) {
std::pair<std::string,std::string> nsTagPair = String::getSplittedAtFirst(name, NAMESPACE_SEPARATOR);
if (nsTagPair.second == "") {
nsTagPair.second = nsTagPair.first;
nsTagPair.first = "";
}
static_cast<XMLParser*>(parser)->getClient()->handleEndElement(nsTagPair.second, nsTagPair.first);
}
static void handleCharacterData(void* parser, const XML_Char* data, int len) {
assert(len >= 0);
static_cast<XMLParser*>(parser)->getClient()->handleCharacterData(std::string(data, static_cast<size_t>(len)));
}
static void handleXMLDeclaration(void*, const XML_Char*, const XML_Char*, int) {
}
static void handleEntityDeclaration(void* parser, const XML_Char*, int, const XML_Char*, int, const XML_Char*, const XML_Char*, const XML_Char*, const XML_Char*) {
static_cast<ExpatParser*>(parser)->stopParser();
}
ExpatParser::ExpatParser(XMLParserClient* client) : XMLParser(client), p(new Private()) {
p->parser_ = XML_ParserCreateNS("UTF-8", NAMESPACE_SEPARATOR);
XML_SetUserData(p->parser_, this);
XML_SetElementHandler(p->parser_, handleStartElement, handleEndElement);
XML_SetCharacterDataHandler(p->parser_, handleCharacterData);
XML_SetXmlDeclHandler(p->parser_, handleXMLDeclaration);
XML_SetEntityDeclHandler(p->parser_, handleEntityDeclaration);
}
ExpatParser::~ExpatParser() {
XML_ParserFree(p->parser_);
}
bool ExpatParser::parse(const std::string& data) {
bool success = XML_Parse(p->parser_, data.c_str(), boost::numeric_cast<int>(data.size()), false) == XML_STATUS_OK;
/*if (!success) {
std::cout << "ERROR: " << XML_ErrorString(XML_GetErrorCode(p->parser_)) << " while parsing " << data << std::endl;
}*/
return success;
}
void ExpatParser::stopParser() {
XML_StopParser(p->parser_, static_cast<XML_Bool>(0));
}
}
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Swift