106 lines
2.7 KiB
C
106 lines
2.7 KiB
C
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/***
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*mbsncol.c - Collate n characters of two MBCS strings
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*
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* Copyright (c) 1994-2001, Microsoft Corporation. All rights reserved.
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*
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*Purpose:
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* Collate n characters of two MBCS strings
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*
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*Revision History:
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* 05-12-94 CFW Module created from mbs*cmp.c
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* 06-03-94 CFW Allow non-_INTL.
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* 07-26-94 CFW Fix for bug #13384.
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* 09-06-94 CFW Allow non-_WIN32!.
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* 12-21-94 CFW Remove fcntrlcomp NT 3.1 hack.
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* 09-26-97 BWT Fix POSIX
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* 04-16-98 GJF Implemented multithread support based on threadmbcinfo
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* structs
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* 12-18-98 GJF Changes for 64-bit size_t.
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* 05-17-99 PML Remove all Macintosh support.
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*
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*******************************************************************************/
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#ifdef _MBCS
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#include <awint.h>
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#include <mtdll.h>
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#include <cruntime.h>
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#include <internal.h>
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#include <mbdata.h>
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#include <mbctype.h>
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#include <string.h>
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#include <mbstring.h>
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/***
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* _mbsncoll(s1, s2, n) - Collate n characters of two MBCS strings
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*
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*Purpose:
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* Collates up to n charcters of two strings for lexical order.
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* Strings are collated on a character basis, not a byte basis.
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*
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*Entry:
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* unsigned char *s1, *s2 = strings to collate
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* size_t n = maximum number of characters to collate
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*
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*Exit:
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* returns <0 if s1 < s2
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* returns 0 if s1 == s2
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* returns >0 if s1 > s2
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*
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*Exceptions:
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*
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*******************************************************************************/
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int __cdecl _mbsncoll(
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const unsigned char *s1,
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const unsigned char *s2,
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size_t n
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)
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{
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#if defined (_POSIX_)
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return _mbsncmp(s1, s2, n);
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#else
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int ret;
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size_t bcnt1, bcnt2;
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#ifdef _MT
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pthreadmbcinfo ptmbci = _getptd()->ptmbcinfo;
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if ( ptmbci != __ptmbcinfo )
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ptmbci = __updatetmbcinfo();
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#endif
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if (n == 0)
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return 0;
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#ifdef _MT
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bcnt1 = __mbsnbcnt_mt(ptmbci, s1, n);
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bcnt2 = __mbsnbcnt_mt(ptmbci, s2, n);
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#else
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bcnt1 = _mbsnbcnt(s1, n);
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bcnt2 = _mbsnbcnt(s2, n);
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#endif
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#ifdef _MT
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if ( 0 == (ret = __crtCompareStringA( ptmbci->mblcid,
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#else
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if ( 0 == (ret = __crtCompareStringA( __mblcid,
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#endif
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0,
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s1,
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(int)bcnt1,
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s2,
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(int)bcnt2,
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#ifdef _MT
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ptmbci->mbcodepage )) )
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#else
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__mbcodepage )) )
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#endif
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return _NLSCMPERROR;
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return ret - 2;
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#endif /* _POSIX_ */
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}
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#endif /* _MBCS */
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