[reactos] 04/06: [CHCP] Reset the current thread UI language and streams codepage after changing the console codepage. CORE-17601

[Hermès Bélusca-Maïto]

https://git.reactos.org/?p=reactos.git;a=commitdiff;h=a8ef85ad710a8a48256165...

commit a8ef85ad710a8a48256165a08dfb6b725433ab2f
Author:     Hermès Bélusca-Maïto [e-mail]
AuthorDate: Tue May 25 20:04:01 2021 +0200
Commit:     Hermès Bélusca-Maïto [e-mail]
CommitDate: Wed May 26 01:42:11 2021 +0200

[CHCP] Reset the current thread UI language and streams codepage after changing the console codepage.
    CORE-17601
---
 base/applications/cmdutils/chcp/chcp.c | 30 +++++++++++++++++++-----------
 1 file changed, 19 insertions(+), 11 deletions(-)

diff --git a/base/applications/cmdutils/chcp/chcp.c b/base/applications/cmdutils/chcp/chcp.c
index 56c13089edf..36f5291f42c 100644
--- a/base/applications/cmdutils/chcp/chcp.c
+++ b/base/applications/cmdutils/chcp/chcp.c
@@ -1,10 +1,9 @@
 /*
- * COPYRIGHT:       See COPYING in the top level directory
- * PROJECT:         ReactOS Change CodePage Command
- * FILE:            base/applications/cmdutils/chcp/chcp.c
- * PURPOSE:         Displays or changes the active console input and output codepages.
- * PROGRAMMERS:     Eric Kohl
- *                  Hermes Belusca-Maito ([e-mail])
+ * PROJECT:     ReactOS Change CodePage Command
+ * LICENSE:     GPL-2.0+ (https://spdx.org/licenses/GPL-2.0+)
+ * PURPOSE:     Displays or changes the active console input and output code pages.
+ * COPYRIGHT:   Copyright 1999 Eric Kohl
+ *              Copyright 2017-2021 Hermes Belusca-Maito
  */
 /*
  * CHCP.C - chcp internal command.
@@ -64,27 +63,36 @@ int wmain(int argc, WCHAR* argv[])
         return 1;
     }

+/**
+ ** IMPORTANT NOTE: This code must be kept synchronized with MODE.COM!SetConsoleCPState()
+ **/
+
     /*
-     * Save the original console codepage to be restored in case
-     * SetConsoleCP() or SetConsoleOutputCP() fails.
+     * Save the original console code page to be restored
+     * in case SetConsoleCP() or SetConsoleOutputCP() fails.
      */
     uOldCodePage = GetConsoleCP();

/*
-     * Try changing the console input codepage. If it works then also change
-     * the console output codepage, and refresh our local codepage cache.
+     * Try changing the console input and output code pages.
+     * If it succeeds, refresh the local code page information.
      */
     if (SetConsoleCP(uNewCodePage))
     {
         if (SetConsoleOutputCP(uNewCodePage))
         {
+            /* Success, reset the current thread UI language
+             * and update the streams cached code page. */
+            ConSetThreadUILanguage(0);
+            ConStdStreamsSetCacheCodePage(uNewCodePage, uNewCodePage);
+
             /* Display the active code page number */
             ConResPrintf(StdOut, STRING_CHCP_ERROR1, GetConsoleOutputCP());
             return 0;
         }
         else
         {
-            /* Failure, restore the original console codepage */
+            /* Failure, restore the original console code page */
             SetConsoleCP(uOldCodePage);
         }
     }