From dfd4cbeda0cad0aa54635580bee2de4ab0e18cd0 Mon Sep 17 00:00:00 2001
From: Sergey Linnik <linniksa@gmail.com>
Date: Wed, 27 Mar 2019 19:30:46 +0300
Subject: [PATCH] add ability to support alternative charset names

---
 src/Fetch/Message.php         | 8 ++++++++
 tests/Fetch/Test/MIMETest.php | 6 ++++++
 2 files changed, 14 insertions(+)

diff --git a/src/Fetch/Message.php b/src/Fetch/Message.php
index 27c3dc8..3419862 100644
--- a/src/Fetch/Message.php
+++ b/src/Fetch/Message.php
@@ -191,6 +191,10 @@ class Message
      */
     public static $charsetFlag = '//TRANSLIT';
 
+    public static $charsetRenames = array(
+        'ks_c_5601-1987' => 'CP949',
+    );
+
     /**
      * These constants can be used to easily access available flags
      */
@@ -576,6 +580,10 @@ class Message
         $from = strtolower($from);
         $to   = strtolower($to);
 
+        if (isset(self::$charsetRenames[$from])) {
+            $from = self::$charsetRenames[$from];
+        }
+
         if ($from === $to) {
             if ($to === 'utf-8') {
                 return UTF8::fix($text);
diff --git a/tests/Fetch/Test/MIMETest.php b/tests/Fetch/Test/MIMETest.php
index 1685f5c..cfef200 100644
--- a/tests/Fetch/Test/MIMETest.php
+++ b/tests/Fetch/Test/MIMETest.php
@@ -42,6 +42,12 @@ class MIMETest extends \PHPUnit_Framework_TestCase
                 '?????? ?????.pdf',
                 '=?UTF-8?B?' .base64_encode("\xCF\xF0\xE8\xEC\xE5\xF0 \xEF\xEB\xE0\xED\xE0\x2E\x70\x64\x66") . '?=',
             ),
+            array(
+                ' (ИСТРЕБИТЕЛЬ ЛЕТАЮЩИХ НАСЕКОМЫХ "БАРГУЗИН" КП ДИЛЕР - 2019г)',
+                ' =?ks_c_5601-1987?B?ICisqqyzrLSssqymrKKsqqy0rKasray+IKytrKastKyhrMCsu6yq?=' .
+                ' =?ks_c_5601-1987?B?rLcgrK+soayzrKasrKywrK6svay3ICKsoqyhrLKspKy1?=' .
+                ' =?ks_c_5601-1987?B?rKmsqqyvIiCsrKyxIKylrKqsraymrLIgLSAyMDE5rNQp?=',
+            ),
         );
     }