<?php
/**
 * Extension du noyau
 *
 * @package Utopia
 * @subpackage Kernel
*/

defined('INC') or exit;

/**
 * Import / Export de la langue au format XML.
 *
 * @package Utopia
 * @subpackage Kernel
*/
class KLang_XML extends KLang {
	function __construct($logFile, $configPath, $langPath) {
		parent::__construct($logFile, $configPath, $langPath);
	}

	public function exportLangToXML($fileName, $sectionsToSave = NULL) {
		$dom = new DOMDocument;
		$dom -> loadXML(
			"<?xml version=\"1.0\" encoding=\"utf-8\"?>\n"
			."<!DOCTYPE lang SYSTEM \"".$this -> corePath."dtd/lang.dtd\">\n\n"
			."<lang last-modified=".gmdate('Y-m-d\TH:i:s\Z').">\n"
			."</lang>"
		);

		if ($sectionsToSave === NULL)
			$sectionsToSave = array_keys($this -> strings);

		ksort($sectionsToSave, SORT_STRING);

		foreach ($sectionsToSave as $sectionId) {
			if (isset($this -> strings[$sectionId])) {
				$section = $dom -> createElement('section');
				$section -> setAttribute('id', $sectionId);
				$dom -> documentElement -> appendChild($section);
				ksort($this -> strings, SORT_STRING);

				foreach ($this -> strings[$sectionId] as $id => $value) {
					$string = $dom -> createElement('string');
					$string -> setAttribute('id', $id);
					$string -> appendChild($dom -> createTextNode($value));
					$section -> appendChild($string);
				}
			}
			else
				$this -> error(debug_backtrace(), 'SectionXFromLangNotLoaded,'.$sectionId);
		}

		$res = $dom -> save($this -> langPath.$fileName);

		if ($res !== FALSE)
			$this -> addToLog('notice', NULL, 'LangXSaved,'.$fileName);
		else
			$this -> error(debug_backtrace(), 'UnableToSaveLangX,'.$fileName);

		return $res;
	}

	public function importLangFromXML($fileName, $sectionsToLoad = NULL, $ignoreOverLoading = FALSE) {
		if (file_exists($this -> langPath.$fileName)) {
			$dom = new DOMDocument;
			$dom -> resolveExternals = TRUE;
			$dom -> load($this -> langPath.$fileName);

			if ($dom -> validate()) {
				foreach ($dom -> getElementsByTagName('section') as $section) {
					$sectionId = $section -> getAttribute('id');

					if ($sectionsToLoad === NULL || in_array($sectionId, $sectionsToLoad))
						if ($ignoreOverLoading || !isset($this -> strings[$sectionId])) {
							$this -> strings[$sectionId] = array();

							foreach ($section -> getElementsByTagName('string') as $string) {
								if ($string -> firstChild)
									$this -> strings[$sectionId][$string -> getAttribute('id')] = $string -> firstChild -> data;
								else
									$this -> strings[$sectionId][$string -> getAttribute('id')] = '';
							}
						}
						else
							$this -> error(debug_backtrace(), 'LangSectionXAlreadyLoaded,'.$sectionId);
				}

				return TRUE;
			}
			else
				$this -> error(debug_backtrace(), 'LangFileXNotValid,'.$this -> langPath.$fileName);
		}
		else
			$this -> fatalError(debug_backtrace(), 'LangFileXDoesNotExist,'.$this -> langPath.$fileName);

		return FALSE;
	}
}
?>