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#include "Swiften/Parser/StanzaParser.h"

#include <iostream>
#include <cassert>

#include "Swiften/Parser/PayloadParser.h"
#include "Swiften/Parser/PayloadParserFactory.h"
#include "Swiften/Parser/PayloadParserFactoryCollection.h"
#include "Swiften/Parser/UnknownPayloadParser.h"

namespace Swift {

StanzaParser::StanzaParser(PayloadParserFactoryCollection* factories) : 
		currentDepth_(0), factories_(factories) {
}

StanzaParser::~StanzaParser() {
}

void StanzaParser::handleStartElement(const String& element, const String& ns, const AttributeMap& attributes) {
	if (inStanza()) {
		if (!inPayload()) {
			assert(!currentPayloadParser_.get());
			PayloadParserFactory* payloadParserFactory = factories_->getPayloadParserFactory(element, ns, attributes);
			if (payloadParserFactory) {
				currentPayloadParser_.reset(payloadParserFactory->createPayloadParser());
			}
			else {
				currentPayloadParser_.reset(new UnknownPayloadParser());
			}
		}
		assert(currentPayloadParser_.get());
		currentPayloadParser_->handleStartElement(element, ns, attributes);
	}
	else {
		AttributeMap::const_iterator from = attributes.find("from");
		if (from != attributes.end()) {
			getStanza()->setFrom(JID(from->second));
		}
		AttributeMap::const_iterator to = attributes.find("to");
		if (to != attributes.end()) {
			getStanza()->setTo(JID(to->second));
		}
		AttributeMap::const_iterator id = attributes.find("id");
		if (id != attributes.end()) {
			getStanza()->setID(id->second);
		}
		handleStanzaAttributes(attributes);
	}
	++currentDepth_;
}

void StanzaParser::handleEndElement(const String& element, const String& ns) {
	assert(inStanza());
	if (inPayload()) {
		assert(currentPayloadParser_.get());
		currentPayloadParser_->handleEndElement(element, ns);
		--currentDepth_;
		if (!inPayload()) {
			boost::shared_ptr<Payload> payload(currentPayloadParser_->getPayload());
			if (payload) {
				getStanza()->addPayload(payload);
			}
			currentPayloadParser_.reset();
		}
	}
	else {
		--currentDepth_;
	}
}

void StanzaParser::handleCharacterData(const String& data) {
	if (currentPayloadParser_.get()) {
		currentPayloadParser_->handleCharacterData(data);
	}
}

}