<?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) 2005-2012 Zend Technologies USA Inc. (http://www.zend.com)

 * @version    $Id: Tbx.php 24649 2012-02-26 03:37:54Z adamlundrigan $

 * @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) 2005-2012 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 $_term        = null;

    private $_data        = array();

    /**

     * 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

     * @return array

     */

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

    {

        $this->_data = array();

        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 of file %s',

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

                          xml_get_current_line_number($this->_file),

                          $filename);

            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)

    {

        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 (isset($attrib['xml:lang']) === true) {

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

                        if (isset($this->_data[$this->_langset]) === false) {

                            $this->_data[$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($this->_content) or (isset($this->_data[$this->_langset][$this->_termentry]) === false)) {

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

                    }

                    break;

                default:

                    break;

            }

        }

    }

    private function _contentElement($file, $data)

    {

        if ($this->_term !== 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 "Tbx";

    }

}