123 lines
3.2 KiB
C
123 lines
3.2 KiB
C
/***
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*wcscoll.c - Collate wide-character locale strings
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*
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* Copyright (c) 1988-1995, Microsoft Corporation. All rights reserved.
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*
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*Purpose:
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* Compare two wchar_t strings using the locale LC_COLLATE information.
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*
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*Revision History:
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* 09-09-91 ETC Created from strcoll.c.
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* 04-06-92 KRS Make work without _INTL also.
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* 08-19-92 KRS Activate NLS support.
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* 09-02-92 SRW Get _INTL definition via ..\crt32.def
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* 04-06-93 SKS Replace _CRTAPI* with __cdecl
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* 04-14-93 CFW Error sets errno, cleanup.
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* 06-02-93 SRW ignore _INTL if _NTSUBSET_ defined.
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* 09-15-93 CFW Use ANSI conformant "__" names.
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* 09-22-93 CFW Use __crtxxx internal NLS API wrapper.
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* 09-29-93 GJF Merged NT SDK and Cuda versions.
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* 11-09-93 CFW Use LC_COLLATE code page for __crtxxx() conversion.
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* 02-07-94 CFW POSIXify.
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* 04-11-93 CFW Change NLSCMPERROR to _NLCMPERROR.
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* 09-06-94 CFW Remove _INTL switch.
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* 10-25-94 GJF Sped up C locale, multi-thread case.
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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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* 10-30-95 GJF Specify SORT_STRINGSORT to CompareString.
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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 <windows.h>
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#include <stdlib.h>
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#include <string.h>
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#include <locale.h>
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#include <setlocal.h>
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#include <mtdll.h>
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#include <errno.h>
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#include <awint.h>
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/***
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*int wcscoll() - Collate wide-character locale strings
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*
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*Purpose:
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* Compare two wchar_t strings using the locale LC_COLLATE information.
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* In the C locale, wcscmp() is used to make the comparison.
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*
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*Entry:
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* const wchar_t *s1 = pointer to the first string
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* const wchar_t *s2 = pointer to the second string
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*
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*Exit:
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* -1 = first string less than second string
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* 0 = strings are equal
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* 1 = first string greater than second string
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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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* _NLSCMPERROR = error
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* errno = EINVAL
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*
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*******************************************************************************/
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int __cdecl wcscoll (
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const wchar_t *_string1,
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const wchar_t *_string2
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)
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{
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#if !defined(_NTSUBSET_)
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int ret;
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int coll_codepage;
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WCHAR wcstmp[MAX_CP_LEN];
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#if defined(_MT) && !defined(DLL_FOR_WIN32S)
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int local_lock_flag;
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#endif
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if (__lc_handle[LC_COLLATE] == _CLOCALEHANDLE) {
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return (wcscmp(_string1, _string2));
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}
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_lock_locale( local_lock_flag )
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#if defined(_MT) && !defined(DLL_FOR_WIN32S)
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if (__lc_handle[LC_COLLATE] == _CLOCALEHANDLE) {
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_unlock_locale( local_lock_flag )
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return (wcscmp(_string1, _string2));
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}
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#endif
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/*
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* Must use default code page for the LC_COLLATE category for
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* MB/WC conversion inside __crtxxx().
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*/
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if (__crtGetLocaleInfoW(__lc_handle[LC_COLLATE], LOCALE_IDEFAULTCODEPAGE,
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wcstmp, MAX_CP_LEN, 0) == 0)
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return _NLSCMPERROR;
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coll_codepage = (int)wcstol(wcstmp, NULL, 10);
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if (0 == (ret = __crtCompareStringW(__lc_handle[LC_COLLATE],
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SORT_STRINGSORT, _string1, -1, _string2, -1, coll_codepage)))
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{
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_unlock_locale( local_lock_flag )
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errno = EINVAL;
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return _NLSCMPERROR;
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}
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_unlock_locale( local_lock_flag )
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return (ret - 2);
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#else
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return wcscmp(_string1, _string2);
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#endif
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}
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#endif /* _POSIX_ */
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