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168 lines
2.5 KiB
168 lines
2.5 KiB
/*++
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Copyright (c) 1990-2003 Microsoft Corporation
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Module Name:
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widechar.c
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Abstract:
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This module contains all NLS unicode / ansi translation code
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Author:
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18-Nov-1993 Thu 08:21:37 created
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[Environment:]
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GDI Device Driver - Plotter.
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[Notes:]
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Revision History:
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--*/
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#include "precomp.h"
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#pragma hdrstop
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LPWSTR
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str2Wstr(
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LPWSTR pwStr,
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size_t cchDest,
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LPSTR pbStr
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)
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/*++
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Routine Description:
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This function copy a ansi string to the equvlent of unicode string which
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also include the NULL teiminator
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Arguments:
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pwStr - Point to the unicode string location, it must have the size of
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(strlen(pstr) + 1) * sizeof(WCHAR)
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pbStr - a null teiminated string
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Return Value:
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pwcs
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Author:
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18-Nov-1993 Thu 08:36:00 created
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Revision History:
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--*/
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{
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size_t cch;
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if (NULL == pbStr || NULL == pwStr)
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{
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return NULL;
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}
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//
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// Make sure that the size of dest buffer is large enough.
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//
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if (SUCCEEDED(StringCchLengthA(pbStr, cchDest, &cch)))
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{
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//
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// cch returned above does not include the null terminator.
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// So we need to add 1 to cch to make sure destination string is
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// null terminated.
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//
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AnsiToUniCode(pbStr, pwStr, cch+1);
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return pwStr;
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}
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else
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{
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return NULL;
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}
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}
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LPSTR
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WStr2Str(
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LPSTR pbStr,
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size_t cchDest,
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LPWSTR pwStr
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)
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/*++
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Routine Description:
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This function convert a UNICODE string to the ANSI string, assume that
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pbStr has same character count memory as pwStr
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Arguments:
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pbStr - Point to the ANSI string which has size of wcslen(pwStr) + 1
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pwStr - Point to the UNICODE string
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Return Value:
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pbStr
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Author:
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06-Dec-1993 Mon 13:06:12 created
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Revision History:
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--*/
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{
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size_t cch;
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if (NULL == pbStr || NULL == pwStr)
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{
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return NULL;
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}
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if (SUCCEEDED(StringCchLengthW(pwStr, cchDest, &cch)))
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{
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//
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// cch returned above does not include the null terminator.
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// So we need to add 1 to cch to make sure destination string is
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// null terminated.
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//
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UniCodeToAnsi(pbStr, pwStr, cch+1);
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return pbStr;
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}
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else
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{
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return NULL;
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}
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}
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