<?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: Xliff.php 20096 2010-01-06 02:05:09Z bkarwin $

 * @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_Xliff extends Zend_Translate_Adapter {

    // Internal variables

    private $_file        = false;

    private $_useId       = true;

    private $_cleared     = array();

    private $_transunit   = null;

    private $_source      = null;

    private $_target      = null;

    private $_langId      = null;

    private $_scontent    = null;

    private $_tcontent    = null;

    private $_stag        = false;

    private $_ttag        = false;

    private $_data        = array();

    /**

     * Load translation data (XLIFF file reader)

     *

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

     *                            see Zend_Locale for more information

     * @param  string  $filename  XLIFF 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();

        if (!is_readable($filename)) {

            require_once 'Zend/Translate/Exception.php';

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

        }

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

            $this->_useId = false;

        } else {

            $this->_useId = true;

        }

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

        $this->_target = $locale;

        $this->_file   = xml_parser_create($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)

    {

        if ($this->_stag === true) {

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

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

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

            }

            $this->_scontent .= ">";

        } else if ($this->_ttag === true) {

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

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

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

            }

            $this->_tcontent .= ">";

        } else {

            switch(strtolower($name)) {

                case 'file':

                    $this->_source = $attrib['source-language'];

                    if (isset($attrib['target-language'])) {

                        $this->_target = $attrib['target-language'];

                    }

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

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

                    }

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

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

                    }

                    break;

                case 'trans-unit':

                    $this->_transunit = true;

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

                    break;

                case 'source':

                    if ($this->_transunit === true) {

                        $this->_scontent = null;

                        $this->_stag = true;

                        $this->_ttag = false;

                    }

                    break;

                case 'target':

                    if ($this->_transunit === true) {

                        $this->_tcontent = null;

                        $this->_ttag = true;

                        $this->_stag = false;

                    }

                    break;

                default:

                    break;

            }

        }

    }

    private function _endElement($file, $name)

    {

        if (($this->_stag === true) and ($name !== 'source')) {

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

        } else if (($this->_ttag === true) and ($name !== 'target')) {

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

        } else {

            switch (strtolower($name)) {

                case 'trans-unit':

                    $this->_transunit = null;

                    $this->_langId    = null;

                    $this->_scontent  = null;

                    $this->_tcontent  = null;

                    break;

                case 'source':

                    if ($this->_useId) {

                        if (!empty($this->_scontent) && !empty($this->_langId) &&

                            !isset($this->_data[$this->_source][$this->_langId])) {

                            $this->_data[$this->_source][$this->_langId] = $this->_scontent;

                        }

                    } else {

                        if (!empty($this->_scontent) &&

                            !isset($this->_data[$this->_source][$this->_scontent])) {

                            $this->_data[$this->_source][$this->_scontent] = $this->_scontent;

                        }

                    }

                    $this->_stag = false;

                    break;

                case 'target':

                    if ($this->_useId) {

                        if (!empty($this->_tcontent) && !empty($this->_langId) &&

                            !isset($this->_data[$this->_target][$this->_langId])) {

                            $this->_data[$this->_target][$this->_langId] = $this->_tcontent;

                        }

                    } else {

                        if (!empty($this->_tcontent) && !empty($this->_scontent) &&

                            !isset($this->_data[$this->_target][$this->_scontent])) {

                            $this->_data[$this->_target][$this->_scontent] = $this->_tcontent;

                        }

                    }

                    $this->_ttag = false;

                    break;

                default:

                    break;

            }

        }

    }

    private function _contentElement($file, $data)

    {

        if (($this->_transunit !== null) and ($this->_source !== null) and ($this->_stag === true)) {

            $this->_scontent .= $data;

        }

        if (($this->_transunit !== null) and ($this->_target !== null) and ($this->_ttag === true)) {

            $this->_tcontent .= $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 "Xliff";

    }

}