reactos/base/applications/cmdutils/chcp/chcp.c

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/*
* 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.
*
* 23-Dec-1998 (Eric Kohl)
* Started.
*
* 02-Apr-2005 (Magnus Olsen <magnus@greatlord.com>)
* Remove all hardcoded strings in En.rc
*/
#include <stdio.h>
#include <stdlib.h>
#include <windef.h>
#include <winbase.h>
#include <wincon.h>
#include <conutils.h>
#include "resource.h"
// INT CommandChcp(LPTSTR cmd, LPTSTR param)
int wmain(int argc, WCHAR* argv[])
{
UINT uOldCodePage, uNewCodePage;
/* Initialize the Console Standard Streams */
ConInitStdStreams();
/* Print help */
if (argc > 1 && wcscmp(argv[1], L"/?") == 0)
{
ConResPuts(StdOut, STRING_CHCP_HELP);
return 0;
}
if (argc == 1)
{
/* Display the active code page number */
ConResPrintf(StdOut, STRING_CHCP_ERROR1, GetConsoleOutputCP());
return 0;
}
if (argc > 2)
{
/* Too many parameters */
ConResPrintf(StdErr, STRING_ERROR_INVALID_PARAM_FORMAT, argv[2]);
return 1;
}
uNewCodePage = (UINT)_wtoi(argv[1]);
if (uNewCodePage == 0)
{
ConResPrintf(StdErr, STRING_ERROR_INVALID_PARAM_FORMAT, argv[1]);
return 1;
}
/**
** IMPORTANT NOTE: This code must be kept synchronized with MODE.COM!SetConsoleCPState()
**/
/*
* Save the original console code page to be restored
* in case SetConsoleCP() or SetConsoleOutputCP() fails.
*/
uOldCodePage = GetConsoleCP();
/*
* 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 code page */
SetConsoleCP(uOldCodePage);
}
}
/* An error happened, display an error and bail out */
ConResPuts(StdErr, STRING_CHCP_ERROR4);
return 1;
}