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<?php
/**
* @author Qiang Xue <qiang.xue@gmail.com>
* @link http://www.yiiframework.com/
* @copyright Copyright (c) 2008 Yii Software LLC
* @license http://www.yiiframework.com/license/
*/
namespace yii\console\controllers;
use yii\console\Controller;
/**
* This command extracts messages to be translated from source files.
* The extracted messages are saved as PHP message source files
* under the specified directory.
*
* @author Qiang Xue <qiang.xue@gmail.com>
* @since 2.0
*/
class MessageController extends Controller
{
/**
* Searches for messages to be translated in the specified
* source files and compiles them into PHP arrays as message source.
*
* @param string $config the path of the configuration file. You can find
* an example in framework/messages/config.php.
*
* The file can be placed anywhere and must be a valid PHP script which
* returns an array of name-value pairs. Each name-value pair represents
* a configuration option.
*
* The following options are available:
*
* - sourcePath: string, root directory of all source files.
* - messagePath: string, root directory containing message translations.
* - languages: array, list of language codes that the extracted messages
* should be translated to. For example, array('zh_cn','en_au').
* - fileTypes: array, a list of file extensions (e.g. 'php', 'xml').
* Only the files whose extension name can be found in this list
* will be processed. If empty, all files will be processed.
* - exclude: array, a list of directory and file exclusions. Each
* exclusion can be either a name or a path. If a file or directory name
* or path matches the exclusion, it will not be copied. For example,
* an exclusion of '.svn' will exclude all files and directories whose
* name is '.svn'. And an exclusion of '/a/b' will exclude file or
* directory 'sourcePath/a/b'.
* - translator: the name of the function for translating messages.
* Defaults to 'Yii::t'. This is used as a mark to find messages to be
* translated.
* - overwrite: if message file must be overwritten with the merged messages.
* - removeOld: if message no longer needs translation it will be removed,
* instead of being enclosed between a pair of '@@' marks.
* - sort: sort messages by key when merging, regardless of their translation
* state (new, obsolete, translated.)
*/
public function actionIndex($config)
{
if(!is_file($config))
$this->usageError("the configuration file {$config} does not exist.");
$config=require_once($config);
$translator='Yii::t';
extract($config);
if(!isset($sourcePath,$messagePath,$languages))
$this->usageError('The configuration file must specify "sourcePath", "messagePath" and "languages".');
if(!is_dir($sourcePath))
$this->usageError("The source path $sourcePath is not a valid directory.");
if(!is_dir($messagePath))
$this->usageError("The message path $messagePath is not a valid directory.");
if(empty($languages))
$this->usageError("Languages cannot be empty.");
if(!isset($overwrite))
$overwrite = false;
if(!isset($removeOld))
$removeOld = false;
if(!isset($sort))
$sort = false;
$options=array();
if(isset($fileTypes))
$options['fileTypes']=$fileTypes;
if(isset($exclude))
$options['exclude']=$exclude;
$files=CFileHelper::findFiles(realpath($sourcePath),$options);
$messages=array();
foreach($files as $file)
$messages=array_merge_recursive($messages,$this->extractMessages($file,$translator));
foreach($languages as $language)
{
$dir=$messagePath.DIRECTORY_SEPARATOR.$language;
if(!is_dir($dir))
@mkdir($dir);
foreach($messages as $category=>$msgs)
{
$msgs=array_values(array_unique($msgs));
$this->generateMessageFile($msgs,$dir.DIRECTORY_SEPARATOR.$category.'.php',$overwrite,$removeOld,$sort);
}
}
}
protected function extractMessages($fileName,$translator)
{
echo "Extracting messages from $fileName...\n";
$subject=file_get_contents($fileName);
$n=preg_match_all('/\b'.$translator.'\s*\(\s*(\'.*?(?<!\\\\)\'|".*?(?<!\\\\)")\s*,\s*(\'.*?(?<!\\\\)\'|".*?(?<!\\\\)")\s*[,\)]/s',$subject,$matches,PREG_SET_ORDER);
$messages=array();
for($i=0;$i<$n;++$i)
{
if(($pos=strpos($matches[$i][1],'.'))!==false)
$category=substr($matches[$i][1],$pos+1,-1);
else
$category=substr($matches[$i][1],1,-1);
$message=$matches[$i][2];
$messages[$category][]=eval("return $message;"); // use eval to eliminate quote escape
}
return $messages;
}
protected function generateMessageFile($messages,$fileName,$overwrite,$removeOld,$sort)
{
echo "Saving messages to $fileName...";
if(is_file($fileName))
{
$translated=require($fileName);
sort($messages);
ksort($translated);
if(array_keys($translated)==$messages)
{
echo "nothing new...skipped.\n";
return;
}
$merged=array();
$untranslated=array();
foreach($messages as $message)
{
if(!empty($translated[$message]))
$merged[$message]=$translated[$message];
else
$untranslated[]=$message;
}
ksort($merged);
sort($untranslated);
$todo=array();
foreach($untranslated as $message)
$todo[$message]='';
ksort($translated);
foreach($translated as $message=>$translation)
{
if(!isset($merged[$message]) && !isset($todo[$message]) && !$removeOld)
{
if(substr($translation,0,2)==='@@' && substr($translation,-2)==='@@')
$todo[$message]=$translation;
else
$todo[$message]='@@'.$translation.'@@';
}
}
$merged=array_merge($todo,$merged);
if($sort)
ksort($merged);
if($overwrite === false)
$fileName.='.merged';
echo "translation merged.\n";
}
else
{
$merged=array();
foreach($messages as $message)
$merged[$message]='';
ksort($merged);
echo "saved.\n";
}
$array=str_replace("\r",'',var_export($merged,true));
$content=<<<EOD
<?php
/**
* Message translations.
*
* This file is automatically generated by 'yiic message' command.
* It contains the localizable messages extracted from source code.
* You may modify this file by translating the extracted messages.
*
* Each array element represents the translation (value) of a message (key).
* If the value is empty, the message is considered as not translated.
* Messages that no longer need translation will have their translations
* enclosed between a pair of '@@' marks.
*
* Message string can be used with plural forms format. Check i18n section
* of the guide for details.
*
* NOTE, this file must be saved in UTF-8 encoding.
*/
return $array;
EOD;
file_put_contents($fileName, $content);
}
}