104 lines
2.9 KiB
C
104 lines
2.9 KiB
C
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/***
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*wcsicmp.c - contains case-insensitive wide string comp routine _wcsicmp
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*
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* Copyright (c) 1985-2001, Microsoft Corporation. All rights reserved.
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*
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*Purpose:
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* contains _wcsicmp()
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*
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*Revision History:
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* 09-09-91 ETC Created from stricmp.c.
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* 12-09-91 ETC Use C for neutral locale.
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* 04-07-92 KRS Updated and ripped out _INTL switches.
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* 08-19-92 KRS Actived use of CompareStringW.
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* 08-22-92 SRW Allow INTL definition to be conditional for building ntcrt.lib
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* 09-02-92 SRW Get _INTL definition via ..\crt32.def
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* 12-15-92 KRS Added robustness to non-_INTL code. Optimize.
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* 04-06-93 SKS Replace _CRTAPI* with __cdecl
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* 04-14-93 CFW Remove locale-sensitive portion.
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* 02-07-94 CFW POSIXify.
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* 10-25-94 GJF Now works in non-C locales.
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* 09-26-95 GJF New locking macro, and scheme, for functions which
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* reference the locale.
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* 10-11-95 BWT Fix NTSUBSET
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* 08-27-98 GJF Revised multithread support based on threadlocinfo
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* struct.
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*
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*******************************************************************************/
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#ifndef _POSIX_
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#include <cruntime.h>
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#include <setlocal.h>
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#include <string.h>
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#include <locale.h>
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#include <ctype.h>
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#include <setlocal.h>
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#include <mtdll.h>
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/***
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*int _wcsicmp(dst, src) - compare wide-character strings, ignore case
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*
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*Purpose:
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* _wcsicmp perform a case-insensitive wchar_t string comparision.
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* _wcsicmp is independent of locale.
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*
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*Entry:
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* wchar_t *dst, *src - strings to compare
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*
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*Return:
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* <0 if dst < src
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* 0 if dst = src
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* >0 if dst > src
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* This range of return values may differ from other *cmp/*coll functions.
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*
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*Exceptions:
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*
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*******************************************************************************/
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int __cdecl _wcsicmp (
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const wchar_t * dst,
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const wchar_t * src
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)
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{
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wchar_t f,l;
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#ifdef _MT
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pthreadlocinfo ptloci = _getptd()->ptlocinfo;
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if ( ptloci != __ptlocinfo )
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ptloci = __updatetlocinfo();
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#endif
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#ifndef _NTSUBSET_
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#ifdef _MT
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if ( ptloci->lc_handle[LC_CTYPE] == _CLOCALEHANDLE ) {
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#else
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if ( __lc_handle[LC_CTYPE] == _CLOCALEHANDLE ) {
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#endif
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#endif /* _NTSUBSET_ */
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do {
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f = __ascii_towlower(*dst);
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l = __ascii_towlower(*src);
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dst++;
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src++;
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} while ( (f) && (f == l) );
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#ifndef _NTSUBSET_
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}
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else {
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do {
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#ifdef _MT
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f = __towlower_mt( ptloci, (unsigned short)(*(dst++)) );
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l = __towlower_mt( ptloci, (unsigned short)(*(src++)) );
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#else
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f = towlower( (unsigned short)(*(dst++)) );
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l = towlower( (unsigned short)(*(src++)) );
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#endif
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} while ( (f) && (f == l) );
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}
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#endif /* _NTSUBSET_ */
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return (int)(f - l);
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}
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#endif /* _POSIX_ */
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