99 lines
2.4 KiB
PHP
99 lines
2.4 KiB
PHP
<?php
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/**
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* CGettextPoFile class file.
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*
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* @author Qiang Xue <qiang.xue@gmail.com>
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* @link http://www.yiiframework.com/
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* @copyright 2008-2013 Yii Software LLC
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* @license http://www.yiiframework.com/license/
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*/
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/**
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* CGettextPoFile represents a PO Gettext message file.
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*
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* @author Qiang Xue <qiang.xue@gmail.com>
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* @package system.i18n.gettext
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* @since 1.0
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*/
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class CGettextPoFile extends CGettextFile
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{
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/**
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* Loads messages from a PO file.
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* @param string $file file path
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* @param string $context message context
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* @return array message translations (source message => translated message)
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*/
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public function load($file,$context)
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{
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$pattern='/(msgctxt\s+"(.*?(?<!\\\\))")?\s+'
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.'msgid\s+((?:".*(?<!\\\\)"\s*)+)\s+'
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.'msgstr\s+((?:".*(?<!\\\\)"\s*)+)/';
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$matches=array();
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$n=preg_match_all($pattern,file_get_contents($file),$matches);
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$messages=array();
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for($i=0; $i<$n; $i++)
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{
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if($matches[2][$i]===$context)
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{
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$id=$this->decode($matches[3][$i]);
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$message=$this->decode($matches[4][$i]);
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$messages[$id]=$message;
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}
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}
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return $messages;
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}
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/**
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* Saves messages to a PO file.
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* @param string $file file path
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* @param array $messages message translations (message id => translated message).
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* Note if the message has a context, the message id must be prefixed with
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* the context with chr(4) as the separator.
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*/
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public function save($file,$messages)
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{
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$content='';
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foreach($messages as $id=>$message)
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{
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if(($pos=strpos($id,chr(4)))!==false)
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{
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$content.='msgctxt "'.substr($id,0,$pos)."\"\n";
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$id=substr($id,$pos+1);
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}
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$content.='msgid "'.$this->encode($id)."\"\n";
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$content.='msgstr "'.$this->encode($message)."\"\n\n";
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}
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file_put_contents($file,$content);
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}
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/**
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* Encodes special characters in a message.
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* @param string $string message to be encoded
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* @return string the encoded message
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*/
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protected function encode($string)
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{
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return str_replace(
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array('"',"\n","\t","\r"),
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array('\\"',"\\n",'\\t','\\r'),
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$string
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);
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}
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/**
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* Decodes special characters in a message.
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* @param string $string message to be decoded
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* @return string the decoded message
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*/
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protected function decode($string)
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{
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$string=preg_replace(
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array('/"\s+"/','/\\\\n/','/\\\\r/','/\\\\t/','/\\\\"/'),
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array('',"\n","\r","\t",'"'),
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$string
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);
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return substr(rtrim($string),1,-1);
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}
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}
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