<?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) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com)

 * @version    $Id: Date.php 2498 2006-12-23 22:13:38Z thomas $

 * @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) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com)

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

 */

class Zend_Translate_Adapter_Tbx extends Zend_Translate_Adapter {

    // Internal variables

    private $_file        = false;

    private $_cleared     = array();

    private $_langset     = null;

    private $_termentry   = null;

    private $_content     = null;

    private $_defined     = false;

    private $_term        = null;



    /**

     * Generates the tbx adapter

     * This adapter reads with php's xml_parser

     *

     * @param  string              $data     Translation data

     * @param  string|Zend_Locale  $locale   OPTIONAL Locale/Language to set, identical with locale identifier,

     *                                       see Zend_Locale for more information

     * @param  array               $options  OPTIONAL Options to set

     */

    public function __construct($data, $locale = null, array $options = array())

    {

        parent::__construct($data, $locale, $options);

    }





    /**

     * Load translation data (TBX file reader)

     *

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

     * @param  string  $locale    Locale has no effect for TBX because TBX defines all languages within

     *                            the source file

     * @param  array   $option    OPTIONAL Options to use

     * @throws Zend_Translation_Exception

     */

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

    {

        $options = array_merge($this->_options, $options);



        if ($options['clear']) {

            $this->_translate = array();

        }



        if ((in_array('defined_language', $options)) and !empty($options['defined_language'])) {

            $this->_defined = true;

        }



        if (!is_readable($filename)) {

            require_once 'Zend/Translate/Exception.php';

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

        }



        $this->_file = xml_parser_create();

        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);

        }

    }



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

    {

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

            $this->_content .= "<".$name;

            foreach($attrib as $key => $value) {

                $this->_content .= " $key=\"$value\"";

            }

            $this->_content .= ">";

        } else {

            switch(strtolower($name)) {

                case 'termentry':

                    $this->_termentry = null;

                    break;

                case 'langset':

                    if (array_key_exists('xml:lang', $attrib)) {

                        $this->_langset = $attrib['xml:lang'];

                        if (!array_key_exists($this->_langset, $this->_translate)) {

                            $this->_translate[$this->_langset] = array();

                        }

                    }

                    break;

                case 'term':

                    $this->_term    = true;

                    $this->_content = null;

                    break;

                default:

                    break;

            }

        }

    }



    private function _endElement($file, $name)

    {

        if (($this->_term !== null) and ($name != "term")) {

            $this->_content .= "</".$name.">";

        } else {

            switch (strtolower($name)) {

                case 'langset':

                    $this->_langset = null;

                    break;

                case 'term':

                    $this->_term = null;

                    if (empty($this->_termentry)) {

                        $this->_termentry = $this->_content;

                    }

                    if (!empty($this->_content) or !array_key_exists($this->_termentry, $this->_translate[$this->_langset])) {

                        $this->_translate[$this->_langset][$this->_termentry] = $this->_content;

                    }

                    break;

                default:

                    break;

            }

        }

    }



    private function _contentElement($file, $data)

    {

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

            $this->_content .= $data;

        }

    }



    /**

     * Returns the adapter name

     *

     * @return string

     */

    public function toString()

    {

        return "Tbx";

    }

}