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/*
 * Copyright (c) 2011 Tobias Markmann
 * Licensed under the simplified BSD license.
 * See Documentation/Licenses/BSD-simplified.txt for more information.
 */

#include <sstream>
#include <stack>

#include <Swiften/Base/foreach.h>
#include <Swiften/Base/Log.h>
#include <Swiften/Client/XMLBeautifier.h>
#include <Swiften/Parser/PlatformXMLParserFactory.h>

namespace Swift {

XMLBeautifier::XMLBeautifier(bool indention, bool coloring) : doIndention(indention), doColoring(coloring), intLevel(0), parser(NULL), lastWasStepDown(false) {
	factory = new PlatformXMLParserFactory();
}

XMLBeautifier::~XMLBeautifier() {
	delete factory;
}

std::string XMLBeautifier::beautify(const std::string &text) {
	parser = factory->createXMLParser(this);
	intLevel = 0;
	buffer.str(std::string());
	parser->parse(text);
	delete parser;
	return buffer.str();
}

void XMLBeautifier::indent() {
	for (int i = 0; i < intLevel; ++i) {
		buffer << " ";
	}
}

// all bold but reset
const char colorBlue[] = "\x1b[01;34m";
const char colorCyan[] = "\x1b[01;36m";
const char colorGreen[] = "\x1b[01;32m";
const char colorMagenta[] = "\x1b[01;35m";
const char colorRed[] = "\x1b[01;31m";
const char colorReset[] = "\x1b[0m";
const char colorYellow[] = "\x1b[01;33m";



std::string XMLBeautifier::styleTag(const std::string& text) const {
	std::string result;
	result += colorYellow;
	result += text;
	result += colorReset;
	return result;
}

std::string XMLBeautifier::styleNamespace(const std::string& text) const {
	std::string result;
	result += colorRed;
	result += text;
	result += colorReset;
	return result;
}

std::string XMLBeautifier::styleAttribute(const std::string& text) const {
	std::string result;
	result += colorGreen;
	result += text;
	result += colorReset;
	return result;
}
std::string XMLBeautifier::styleValue(const std::string& text) const {
	std::string result;
	result += colorCyan;
	result += text;
	result += colorReset;
	return result;
}

void XMLBeautifier::handleStartElement(const std::string& element, const std::string& ns, const AttributeMap& attributes) {
	if (doIndention) {
		if (intLevel) buffer << std::endl;
	}
	indent();
	buffer << "<" << (doColoring ? styleTag(element) : element);
	if (!ns.empty() && (!parentNSs.empty() && parentNSs.top() != ns)) {
		buffer << " ";
		buffer << (doColoring ? styleAttribute("xmlns") : "xmlns");
		buffer << "=";
		buffer << "\"" << (doColoring ? styleNamespace(ns) : ns) << "\"";
	}
	if (!attributes.getEntries().empty()) {
		foreach(AttributeMap::Entry entry, attributes.getEntries()) {
			buffer << " ";
			buffer << (doColoring ? styleAttribute(entry.getAttribute().getName()) : entry.getAttribute().getName());
			buffer << "=";
			buffer << "\"" << (doColoring ? styleValue(entry.getValue()) : entry.getValue()) << "\"";
		}
	}
	buffer << ">";
	++intLevel;
	lastWasStepDown = false;
	parentNSs.push(ns);
}

void XMLBeautifier::handleEndElement(const std::string& element, const std::string& /* ns */) {
	--intLevel;
	parentNSs.pop();
	if (/*hadCDATA.top() ||*/ lastWasStepDown) {
		if (doIndention) {
			buffer << std::endl;
		}
		indent();
	}
	buffer << "</" << (doColoring ? styleTag(element) : element) << ">";
	lastWasStepDown = true;
}

void XMLBeautifier::handleCharacterData(const std::string& data) {
	buffer << data;
	lastWasStepDown = false;
}

}