<?php

/**

 * Zend Framework

 *

 * LICENSE

 *

 * This source file is subject to the new BSD license that is bundled

 * with this package in the file LICENSE.txt.

 * It is also available through the world-wide-web at this URL:

 * http://framework.zend.com/license/new-bsd

 * If you did not receive a copy of the license and are unable to

 * obtain it through the world-wide-web, please send an email

 * to license@zend.com so we can send you a copy immediately.

 *

 * @category   Zend

 * @package    Zend_Translate

 * @copyright  Copyright (c) 2005-2011 Zend Technologies USA Inc. (http://www.zend.com)

 * @version    $Id: XmlTm.php 23775 2011-03-01 17:25:24Z ralph $

 * @license    http://framework.zend.com/license/new-bsd     New BSD License

 */





/** Zend_Locale */

require_once 'Zend/Locale.php';



/** Zend_Translate_Adapter */

require_once 'Zend/Translate/Adapter.php';





/**

 * @category   Zend

 * @package    Zend_Translate

 * @copyright  Copyright (c) 2005-2011 Zend Technologies USA Inc. (http://www.zend.com)

 * @license    http://framework.zend.com/license/new-bsd     New BSD License

 */

class Zend_Translate_Adapter_XmlTm extends Zend_Translate_Adapter {

    // Internal variables

    private $_file        = false;

    private $_cleared     = array();

    private $_lang        = null;

    private $_content     = null;

    private $_tag         = null;

    private $_data        = array();



    /**

     * Load translation data (XMLTM file reader)

     *

     * @param  string  $locale    Locale/Language to add data for, identical with locale identifier,

     *                            see Zend_Locale for more information

     * @param  string  $filename  XMLTM file to add, full path must be given for access

     * @param  array   $option    OPTIONAL Options to use

     * @throws Zend_Translation_Exception

     * @return array

     */

    protected function _loadTranslationData($filename, $locale, array $options = array())

    {

        $this->_data = array();

        $this->_lang = $locale;

        if (!is_readable($filename)) {

            require_once 'Zend/Translate/Exception.php';

            throw new Zend_Translate_Exception('Translation file \'' . $filename . '\' is not readable.');

        }



        $encoding    = $this->_findEncoding($filename);

        $this->_file = xml_parser_create($encoding);

        xml_set_object($this->_file, $this);

        xml_parser_set_option($this->_file, XML_OPTION_CASE_FOLDING, 0);

        xml_set_element_handler($this->_file, "_startElement", "_endElement");

        xml_set_character_data_handler($this->_file, "_contentElement");



        if (!xml_parse($this->_file, file_get_contents($filename))) {

            $ex = sprintf('XML error: %s at line %d',

                          xml_error_string(xml_get_error_code($this->_file)),

                          xml_get_current_line_number($this->_file));

            xml_parser_free($this->_file);

            require_once 'Zend/Translate/Exception.php';

            throw new Zend_Translate_Exception($ex);

        }



        return $this->_data;

    }



    private function _startElement($file, $name, $attrib)

    {

        switch(strtolower($name)) {

            case 'tm:tu':

                $this->_tag     = $attrib['id'];

                $this->_content = null;

                break;

            default:

                break;

        }

    }



    private function _endElement($file, $name)

    {

        switch (strtolower($name)) {

            case 'tm:tu':

                if (!empty($this->_tag) and !empty($this->_content) or

                    (isset($this->_data[$this->_lang][$this->_tag]) === false)) {

                    $this->_data[$this->_lang][$this->_tag] = $this->_content;

                }

                $this->_tag     = null;

                $this->_content = null;

                break;



            default:

                break;

        }

    }



    private function _contentElement($file, $data)

    {

        if (($this->_tag !== null)) {

            $this->_content .= $data;

        }

    }



    private function _findEncoding($filename)

    {

        $file = file_get_contents($filename, null, null, 0, 100);

        if (strpos($file, "encoding") !== false) {

            $encoding = substr($file, strpos($file, "encoding") + 9);

            $encoding = substr($encoding, 1, strpos($encoding, $encoding[0], 1) - 1);

            return $encoding;

        }

        return 'UTF-8';

    }



    /**

     * Returns the adapter name

     *

     * @return string

     */

    public function toString()

    {

        return "XmlTm";

    }

}