Support Microsoft charset values (#271)

Close #270

Author: Slamdunk

src/Message/Transcoder.php

@@ -14,8 +14,21 @@ final class Transcoder
      * @see https://encoding.spec.whatwg.org/#encodings
      * @see https://dxr.mozilla.org/mozilla-central/source/dom/encoding/labelsencodings.properties
      * @see https://dxr.mozilla.org/mozilla1.9.1/source/intl/uconv/src/charsetalias.properties
+     * @see https://msdn.microsoft.com/en-us/library/cc194829.aspx
      */
     private static $charsetAliases = [
+        '128' => 'Shift_JIS',
+        '129' => 'EUC-KR',
+        '134' => 'GB2312',
+        '136' => 'Big5',
+        '161' => 'windows-1253',
+        '162' => 'windows-1254',
+        '177' => 'windows-1255',
+        '178' => 'windows-1256',
+        '186' => 'windows-1257',
+        '204' => 'windows-1251',
+        '222' => 'windows-874',
+        '238' => 'windows-1250',
         '5601' => 'EUC-KR',
         '646' => 'us-ascii',
         '850' => 'IBM850',

tests/MessageTest.php

@@ -195,6 +195,26 @@ public function testCharsetAlias()
         $this->assertSame($text, \rtrim($message->getBodyText()));
     }
 
+    public function testMicrosoftCharsetAlias()
+    {
+        $charset = '134';
+        $charsetAlias = 'GB2312';
+        $text = '电佛';
+
+        $this->createTestMessage(
+            $this->mailbox,
+            $charset,
+            \mb_convert_encoding($text, $charsetAlias, 'UTF-8'),
+            null,
+            $charsetAlias,
+            $charset
+        );
+
+        $message = $this->mailbox->getMessage(1);
+
+        $this->assertSame($text, \rtrim($message->getBodyText()));
+    }
+
     public function testUnsupportedCharset()
     {
         $charset = \uniqid('NAN_CHARSET_');