Fixes #1973: Re-implemented solution for yii message/extract is now able to generate .po files

framework/CHANGELOG.md

@@ -64,6 +64,7 @@ Yii Framework 2 Change Log
 - Enh #1852: ActiveRecord::tableName() now returns table name using DbConnection::tablePrefix (creocoder)
 - Enh #1894: The path aliases `@webroot` and `@web` are now available right after the application is initialized (qiangxue)
 - Enh #1921: Grid view ActionColumn now allow to name buttons like `{controller/action}` (creocoder)
+- Enh #1973: `yii message/extract` is now able to generate `.po` files (SergeiKutanov, samdark)
 - Enh: Added `favicon.ico` and `robots.txt` to default application templates (samdark)
 - Enh: Added `Widget::autoIdPrefix` to support prefixing automatically generated widget IDs (qiangxue)
 - Enh: Support for file aliases in console command 'message' (omnilight)

framework/console/controllers/MessageController.php

@@ -15,8 +15,9 @@ use yii\helpers\FileHelper;
 
 /**
  * This command extracts messages to be translated from source files.
- * The extracted messages are saved as PHP message source files
- * under the specified directory.
+ * The extracted messages are saved either as PHP message source files
+ * or ".po" files under the specified directory. Format depends on `format`
+ * setting in config file.
  *
  * Usage:
  * 1. Create a configuration file using the 'message/config' command:
@@ -69,7 +70,7 @@ class MessageController extends Controller
 	 * this file and then customize it for your needs.
 	 * @throws Exception on failure.
 	 */
-	public function actionExtract($configFile, $out=null)
+	public function actionExtract($configFile)
 	{
 		$configFile = Yii::getAlias($configFile);
 		if (!is_file($configFile)) {
@@ -81,6 +82,7 @@ class MessageController extends Controller
 			'overwrite' => false,
 			'removeUnused' => false,
 			'sort' => false,
+			'format' => 'php',
 		], require($configFile));
 
 		if (!isset($config['sourcePath'], $config['messagePath'], $config['languages'])) {
@@ -95,6 +97,9 @@ class MessageController extends Controller
 		if (empty($config['languages'])) {
 			throw new Exception("Languages cannot be empty.");
 		}
+		if (empty($config['format']) || !in_array($config['format'], ['php', 'po'])) {
+			throw new Exception('Format should be either "php" or "po".');
+		}
 
 		$files = FileHelper::findFiles(realpath($config['sourcePath']), $config);
 
@@ -109,21 +114,13 @@ class MessageController extends Controller
 				@mkdir($dir);
 			}
 			foreach ($messages as $category => $msgs) {
-                if($out == 'po'){
-                    $file = str_replace("\\", '/', "$dir/$category.po");
-                }else if($out == null){
-                    $file = str_replace("\\", '/', "$dir/$category.php");
-                }
+				$file = str_replace("\\", '/', "$dir/$category." . $config['format']);
 				$path = dirname($file);
 				if (!is_dir($path)) {
 					mkdir($path, 0755, true);
 				}
 				$msgs = array_values(array_unique($msgs));
-                if($out == 'po'){
-                    $this->generateMessageFile($msgs, $file, $config['overwrite'], $config['removeUnused'], $config['sort'], $out);
-                }else if($out == null){
-                    $this->generateMessageFile($msgs, $file, $config['overwrite'], $config['removeUnused'], $config['sort']);
-                }
+				$this->generateMessageFile($msgs, $file, $config['overwrite'], $config['removeUnused'], $config['sort'], $config['format']);
 			}
 		}
 	}
@@ -168,18 +165,19 @@ class MessageController extends Controller
 	 * @param boolean $overwrite if existing file should be overwritten without backup
 	 * @param boolean $removeUnused if obsolete translations should be removed
 	 * @param boolean $sort if translations should be sorted
+	 * @param string $format output format
 	 */
-	protected function generateMessageFile($messages, $fileName, $overwrite, $removeUnused, $sort, $type=null)
+	protected function generateMessageFile($messages, $fileName, $overwrite, $removeUnused, $sort, $format)
 	{
 		echo "Saving messages to $fileName...";
 		if (is_file($fileName)) {
-            if($type == 'po'){
+			if($format === 'po'){
 				$translated = file_get_contents($fileName);
 				preg_match_all('/(?<=msgid ").*(?="\nmsgstr)/', $translated, $keys);
 				preg_match_all('/(?<=msgstr ").*(?="\n\n)/', $translated, $values);
 
 				$translated = array_combine($keys[0], $values[0]);
-            }else if($type == null){
+			} else {
 				$translated = require($fileName);
 			}
 			sort($messages);
@@ -220,9 +218,8 @@ class MessageController extends Controller
 			if (false === $overwrite) {
 				$fileName .= '.merged';
 			}
-            if($type == 'po'){
+			if($format === 'po'){
 				$out_str = '';
-                ksort($merged);
 				foreach($merged as $k=>$v){
 					$out_str .= "msgid \"$k\"\n";
 					$out_str .= "msgstr \"$v\"\n";
@@ -232,7 +229,7 @@ class MessageController extends Controller
 			}
 			echo "translation merged.\n";
 		} else {
-            if($type == 'po'){
+			if ($format === 'po') {
 				$merged = '';
 				sort($messages);
 				foreach($messages as $message) {
@@ -240,7 +237,7 @@ class MessageController extends Controller
 					$merged .= "msgstr \"\"\n";
 					$merged .= "\n";
 				}
-            }else if($type == null){
+			} else {
 				$merged = [];
 				foreach ($messages as $message) {
 					$merged[$message] = '';
@@ -249,9 +246,9 @@ class MessageController extends Controller
 			}
 			echo "saved.\n";
 		}
-        if($type == 'po'){
+		if ($format === 'po') {
 			$content = $merged;
-        }else if($type == null){
+		} else {
 			$array = str_replace("\r", '', var_export($merged, true));
 			$content = <<<EOD
 <?php

framework/messages/config.php

@@ -42,4 +42,6 @@ return [
 		'.hgkeep',
 		'/messages',
 	],
+	// Generated file format. Can be either "php" or "po".
+	'format' => 'php',
 ];

framework/views/messageConfig.php

@@ -6,7 +6,7 @@ return [
 	// string, required, root directory containing message translations.
 	'messagePath' => __DIR__ . DIRECTORY_SEPARATOR . 'messages',
 	// array, required, list of language codes that the extracted messages
-	// should be translated to. For example, ['zh_cn', 'de'].
+	// should be translated to. For example, ['zh-CN', 'de'].
 	'languages' => ['de'],
 	// string, the name of the function for translating messages.
 	// Defaults to 'Yii::t'. This is used as a mark to find the messages to be
@@ -42,4 +42,6 @@ return [
 		'.hgkeep',
 		'/messages',
 	],
+	// Generated file format. Can be either "php" or "po".
+	'format' => 'php',
 ];