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Reactos
1/***
2*mbsnbico.c - Collate n bytes of strings, ignoring case (MBCS)
3*
4* Copyright (c) Microsoft Corporation. All rights reserved.
5*
6*Purpose:
7* Collate n bytes of strings, ignoring case (MBCS)
8*
9*******************************************************************************/
10#ifndef _MBCS
11 #error This file should only be compiled with _MBCS defined
12#endif
13
14#include <corecrt_internal_mbstring.h>
15#include <locale.h>
16
17
18/***
19* _mbsnbicoll - Collate n bytes of strings, ignoring case (MBCS)
20*
21*Purpose:
22* Collates up to n bytes of two strings for lexical order.
23* Strings are collated on a character basis, not a byte basis.
24* Case of characters is not considered.
25*
26*Entry:
27* unsigned char *s1, *s2 = strings to collate
28* size_t n = maximum number of bytes to collate
29*
30*Exit:
31* Returns <0 if s1 < s2
32* Returns 0 if s1 == s2
33* Returns >0 if s1 > s2
34* Returns _NLSCMPERROR is something went wrong
35*
36*Exceptions:
37* Input parameters are validated. Refer to the validation section of the function.
38*
39*******************************************************************************/
40
41extern "C" int __cdecl _mbsnbicoll_l(
42 const unsigned char *s1,
43 const unsigned char *s2,
44 size_t n,
45 _locale_t plocinfo
46 )
47{
48 int ret;
49 _LocaleUpdate _loc_update(plocinfo);
50
51 if (n == 0)
52 return 0;
53
54 /* validation section */
55 _VALIDATE_RETURN(s1 != nullptr, EINVAL, _NLSCMPERROR);
56 _VALIDATE_RETURN(s2 != nullptr, EINVAL, _NLSCMPERROR);
57 _VALIDATE_RETURN(n <= INT_MAX, EINVAL, _NLSCMPERROR);
58
59 if (_loc_update.GetLocaleT()->mbcinfo->ismbcodepage == 0)
60 return _strnicoll_l((const char *)s1, (const char *)s2, n, plocinfo);
61
62 if ( 0 == (ret = __acrt_CompareStringA(_loc_update.GetLocaleT(),
63 _loc_update.GetLocaleT()->mbcinfo->mblocalename,
64 SORT_STRINGSORT | NORM_IGNORECASE,
65 (const char *)s1,
66 (int)n,
67 (char *)s2,
68 (int)n,
69 _loc_update.GetLocaleT()->mbcinfo->mbcodepage )) )
70 return _NLSCMPERROR;
71
72 return ret - 2;
73
74}
75extern "C" int __cdecl _mbsnbicoll(
76 const unsigned char *s1,
77 const unsigned char *s2,
78 size_t n
79 )
80{
81 return _mbsnbicoll_l(s1, s2, n, nullptr);
82}