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/* $Id: utf8-win.cpp $ */
/** @file
* IPRT - UTF8 helpers.
*/
/*
* Copyright (C) 2006-2023 Oracle and/or its affiliates.
*
* This file is part of VirtualBox base platform packages, as
* available from https://www.virtualbox.org.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation, in version 3 of the
* License.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <https://www.gnu.org/licenses>.
*
* The contents of this file may alternatively be used under the terms
* of the Common Development and Distribution License Version 1.0
* (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
* in the VirtualBox distribution, in which case the provisions of the
* CDDL are applicable instead of those of the GPL.
*
* You may elect to license modified versions of this file under the
* terms and conditions of either the GPL or the CDDL or both.
*
* SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
*/
/*********************************************************************************************************************************
* Header Files *
*********************************************************************************************************************************/
#define LOG_GROUP RTLOGGROUP_UTF8
#include <iprt/win/windows.h>
#include <iprt/string.h>
#include <iprt/alloc.h>
#include <iprt/assert.h>
#include <iprt/err.h>
#include <iprt/utf16.h>
RTR3DECL(int) RTStrUtf8ToCurrentCPTag(char **ppszString, const char *pszString, const char *pszTag)
{
return RTStrUtf8ToCurrentCPExTag(ppszString, pszString, RTSTR_MAX, pszTag);
}
RTR3DECL(int) RTStrUtf8ToCurrentCPExTag(char **ppszString, const char *pszString, size_t cchString, const char *pszTag)
{
Assert(ppszString);
Assert(pszString);
*ppszString = NULL;
/*
* If the ANSI codepage (CP_ACP) is UTF-8, no translation is needed.
* Same goes for empty strings.
*/
if ( cchString == 0
|| *pszString == '\0')
return RTStrDupNExTag(ppszString, pszString, 0, pszTag);
if (GetACP() == CP_UTF8)
{
int rc = RTStrValidateEncodingEx(pszString, cchString, 0);
AssertRCReturn(rc, rc);
return RTStrDupNExTag(ppszString, pszString, cchString, pszTag);
}
/*
* Convert to wide char first.
*/
PRTUTF16 pwszString = NULL;
int rc = RTStrToUtf16Ex(pszString, cchString, &pwszString, 0, NULL);
if (RT_FAILURE(rc))
return rc;
/*
* First calc result string length.
*/
int cbResult = WideCharToMultiByte(CP_ACP, 0, pwszString, -1, NULL, 0, NULL, NULL);
if (cbResult > 0)
{
/*
* Alloc space for result buffer.
*/
LPSTR lpString = (LPSTR)RTMemTmpAllocTag(cbResult, pszTag);
if (lpString)
{
/*
* Do the translation.
*/
if (WideCharToMultiByte(CP_ACP, 0, pwszString, -1, lpString, cbResult, NULL, NULL) > 0)
{
/* ok */
*ppszString = lpString;
RTMemTmpFree(pwszString);
return VINF_SUCCESS;
}
/* translation error */
int iLastErr = GetLastError();
AssertMsgFailed(("Unicode to ACP translation failed. lasterr=%d\n", iLastErr));
rc = RTErrConvertFromWin32(iLastErr);
}
else
rc = VERR_NO_TMP_MEMORY;
RTMemTmpFree(lpString);
}
else
{
/* translation error */
int iLastErr = GetLastError();
AssertMsgFailed(("Unicode to ACP translation failed lasterr=%d\n", iLastErr));
rc = RTErrConvertFromWin32(iLastErr);
}
RTMemTmpFree(pwszString);
return rc;
}
static int rtStrCPToUtf8Tag(char **ppszString, const char *pszString, uint32_t uCodePage, const char *pszTag)
{
Assert(ppszString);
Assert(pszString);
*ppszString = NULL;
/*
* If the ANSI codepage (CP_ACP) is UTF-8, no translation is needed.
* Same goes for empty strings.
*/
if (*pszString == '\0')
return RTStrDupExTag(ppszString, pszString, pszTag);
if (GetACP() == CP_UTF8)
{
int rc = RTStrValidateEncoding(pszString);
AssertRCReturn(rc, rc);
return RTStrDupExTag(ppszString, pszString, pszTag);
}
/** @todo is there a quicker way? Currently: ACP -> UTF-16 -> UTF-8 */
/*
* First calc result string length.
*/
int rc;
int cwc = MultiByteToWideChar((UINT)uCodePage, 0, pszString, -1, NULL, 0);
if (cwc > 0)
{
/*
* Alloc space for result buffer.
*/
PRTUTF16 pwszString = (PRTUTF16)RTMemTmpAlloc(cwc * sizeof(RTUTF16));
if (pwszString)
{
/*
* Do the translation.
*/
if (MultiByteToWideChar((UINT)uCodePage, 0, pszString, -1, pwszString, cwc) > 0)
{
/*
* Now we got UTF-16, convert it to UTF-8
*/
rc = RTUtf16ToUtf8(pwszString, ppszString);
RTMemTmpFree(pwszString);
return rc;
}
RTMemTmpFree(pwszString);
/* translation error */
int iLastErr = GetLastError();
AssertMsgFailed(("ACP to Unicode translation failed. lasterr=%d\n", iLastErr));
rc = RTErrConvertFromWin32(iLastErr);
}
else
rc = VERR_NO_TMP_MEMORY;
}
else
{
/* translation error */
int iLastErr = GetLastError();
AssertMsgFailed(("Unicode to ACP translation failed lasterr=%d\n", iLastErr));
rc = RTErrConvertFromWin32(iLastErr);
}
return rc;
}
RTR3DECL(int) RTStrCurrentCPToUtf8Tag(char **ppszString, const char *pszString, const char *pszTag)
{
return rtStrCPToUtf8Tag(ppszString, pszString, CP_ACP, pszTag);
}
RTR3DECL(int) RTStrConsoleCPToUtf8Tag(char **ppszString, const char *pszString, const char *pszTag)
{
return rtStrCPToUtf8Tag(ppszString, pszString, GetConsoleCP(), pszTag);
}
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