<?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) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)

 * @version    $Id: Tmx.php 21049 2010-02-13 22:52:52Z 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) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)

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

 */

class Zend_Translate_Adapter_Tmx extends Zend_Translate_Adapter {

    // Internal variables

    private $_file    = false;

    private $_useId   = true;

    private $_srclang = null;

    private $_tu      = null;

    private $_tuv     = null;

    private $_seg     = null;

    private $_content = null;

    private $_data    = array();

    /**

     * Load translation data (TMX file reader)

     *

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

     * @param  string  $locale    Locale has no effect for TMX because TMX 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.');

        }

        if (isset($options['useId'])) {

            $this->_useId = (boolean) $options['useId'];

        }

        $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;

    }

    /**

     * Internal method, called by xml element handler at start

     *

     * @param resource $file   File handler

     * @param string   $name   Elements name

     * @param array    $attrib Attributes for this element

     */

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

    {

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

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

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

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

            }

            $this->_content .= ">";

        } else {

            switch(strtolower($name)) {

                case 'header':

                    if (empty($this->_useId) && isset($attrib['srclang'])) {

                        if (Zend_Locale::isLocale($attrib['srclang'])) {

                            $this->_srclang = Zend_Locale::findLocale($attrib['srclang']);

                        } else {

                            if (!$this->_options['disableNotices']) {

                                if ($this->_options['log']) {

                                    $this->_options['log']->notice("The language '{$attrib['srclang']}' can not be set because it does not exist.");

                                } else {

                                    trigger_error("The language '{$attrib['srclang']}' can not be set because it does not exist.", E_USER_NOTICE);

                                }

                            }

                            $this->_srclang = $attrib['srclang'];

                        }

                    }

                    break;

                case 'tu':

                    if (isset($attrib['tuid'])) {

                        $this->_tu = $attrib['tuid'];

                    }

                    break;

                case 'tuv':

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

                        if (Zend_Locale::isLocale($attrib['xml:lang'])) {

                            $this->_tuv = Zend_Locale::findLocale($attrib['xml:lang']);

                        } else {

                            if (!$this->_options['disableNotices']) {

                                if ($this->_options['log']) {

                                    $this->_options['log']->notice("The language '{$attrib['xml:lang']}' can not be set because it does not exist.");

                                } else {

                                    trigger_error("The language '{$attrib['xml:lang']}' can not be set because it does not exist.", E_USER_NOTICE);

                                }

                            }

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

                        }

                        if (!isset($this->_data[$this->_tuv])) {

                            $this->_data[$this->_tuv] = array();

                        }

                    }

                    break;

                case 'seg':

                    $this->_seg     = true;

                    $this->_content = null;

                    break;

                default:

                    break;

            }

        }

    }

    /**

     * Internal method, called by xml element handler at end

     *

     * @param resource $file   File handler

     * @param string   $name   Elements name

     */

    protected function _endElement($file, $name)

    {

        if (($this->_seg !== null) and ($name !== 'seg')) {

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

        } else {

            switch (strtolower($name)) {

                case 'tu':

                    $this->_tu = null;

                    break;

                case 'tuv':

                    $this->_tuv = null;

                    break;

                case 'seg':

                    $this->_seg = null;

                    if (!empty($this->_srclang) && ($this->_srclang == $this->_tuv)) {

                        $this->_tu = $this->_content;

                    }

                    if (!empty($this->_content) or (!isset($this->_data[$this->_tuv][$this->_tu]))) {

                        $this->_data[$this->_tuv][$this->_tu] = $this->_content;

                    }

                    break;

                default:

                    break;

            }

        }

    }

    /**

     * Internal method, called by xml element handler for content

     *

     * @param resource $file File handler

     * @param string   $data Elements content

     */

    protected function _contentElement($file, $data)

    {

        if (($this->_seg !== null) and ($this->_tu !== null) and ($this->_tuv !== null)) {

            $this->_content .= $data;

        }

    }

    /**

     * Internal method, detects the encoding of the xml file

     *

     * @param string $name Filename

     * @return string Encoding

     */

    protected 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 "Tmx";

    }

}