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162 lines
4.4 KiB
162 lines
4.4 KiB
/***
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*xstrcoll.c - Collate locale strings
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*
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* Copyright (c) 1996-2001, Microsoft Corporation. All rights reserved.
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*
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*Purpose:
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* Compare two strings using the locale LC_COLLATE information.
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*
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*Revision History:
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* 01-XX-96 PJP Created from strcoll.c January 1996 by P.J. Plauger
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* 04-17-96 GJF Updated for current locale locking. Also, reformatted
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* and made several cosmetic changes.
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* 05-14-96 JWM Bug fix to _Strcoll(): error path failed to unlock.
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* 09-26-96 GJF Made _GetColl() multithread safe.
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* 12-02-97 GJF Removed bogus codepage determination.
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* 01-12-98 GJF Use _lc_collate_cp codepage.
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* 01-05-99 GJF Changes for 64-bit size_t.
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*
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*******************************************************************************/
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#include <cruntime.h>
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#include <string.h>
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#include <xlocinfo.h> /* for _Collvec, _Strcoll */
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#ifdef _WIN32
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#include <windows.h>
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#include <stdlib.h>
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#include <malloc.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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#endif /* _WIN32 */
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/* Define _CRTIMP2 */
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#ifndef _CRTIMP2
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#ifdef CRTDLL2
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#define _CRTIMP2 __declspec(dllexport)
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#else /* ndef CRTDLL2 */
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#ifdef _DLL
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#define _CRTIMP2 __declspec(dllimport)
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#else /* ndef _DLL */
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#define _CRTIMP2
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#endif /* _DLL */
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#endif /* CRTDLL2 */
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#endif /* _CRTIMP2 */
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/***
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*int _Strcoll() - Collate locale strings
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*
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*Purpose:
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* Compare two strings using the locale LC_COLLATE information.
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* [ANSI].
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*
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* Non-C locale support available under _INTL switch.
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* In the C locale, strcoll() simply resolves to strcmp().
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*Entry:
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* const char *s1b = pointer to beginning of the first string
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* const char *s1e = pointer past end of the first string
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* const char *s2b = pointer to beginning of the second string
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* const char *s1e = pointer past end of the second string
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* const _Collvec *ploc = pointer to locale info
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*
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*Exit:
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* Less than 0 = first string less than second string
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* 0 = strings are equal
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* Greater than 0 = first string greater than second string
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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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_CRTIMP2 int __cdecl _Strcoll (
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const char *_string1,
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const char *_end1,
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const char *_string2,
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const char *_end2,
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const _Collvec *ploc
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)
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{
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#ifdef _WIN32
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int ret;
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LCID handle;
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#ifdef _MT
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int local_lock_flag;
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#endif
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#endif
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int n1 = _end1 - _string1;
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int n2 = _end2 - _string2;
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_lock_locale( local_lock_flag )
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#ifdef _WIN32
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if (ploc == 0)
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handle = __lc_handle[LC_COLLATE];
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else
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handle = ploc->_Hand;
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if (handle == _CLOCALEHANDLE) {
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int ans;
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_unlock_locale( local_lock_flag )
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ans = memcmp(_string1, _string2, n1 < n2 ? n1 : n2);
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return ans != 0 || n1 == n2 ? ans : n1 < n2 ? -1 : +1;
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}
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if ( 0 == (ret = __crtCompareStringA( handle,
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0,
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_string1,
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n1,
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_string2,
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n2,
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__lc_collate_cp )) )
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goto error_cleanup;
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_unlock_locale( local_lock_flag )
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return (ret - 2);
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error_cleanup:
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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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#else /* defined (_WIN32) */
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int ans = memcmp(_string1, _string2, n1 < n2 ? n1 : n2);
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return ans != 0 || n1 == n2 ? ans : n1 < n2 ? -1 : +1;
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#endif /* defined (_WIN32) */
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}
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/***
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*_Collvec _Getcoll() - get collation info for current locale
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*
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*Purpose:
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*
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*Entry:
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*
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*Exit:
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*
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*Exceptions:
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*
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*******************************************************************************/
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_CRTIMP2 _Collvec _Getcoll()
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{
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_Collvec coll;
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#ifdef _MT
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int local_lock_flag;
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#endif
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_lock_locale( local_lock_flag )
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coll._Hand = __lc_handle[LC_COLLATE];
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coll._Page = __lc_collate_cp;
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_unlock_locale( local_lock_flag )
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return (coll);
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}
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