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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 (false === $overwrite) {
$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);
}
}