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1/***
2*mbscoll.c - Collate MBCS strings
3*
4* Copyright (c) Microsoft Corporation. All rights reserved.
5*
6*Purpose:
7* Collate MBCS strings
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#include <string.h>
17
18
19/***
20* _mbscoll - Collate MBCS strings
21*
22*Purpose:
23* Collates two strings for lexical order. Strings
24* are collated on a character basis, not a byte basis.
25*
26*Entry:
27* char *s1, *s2 = strings to collate
28*
29*Exit:
30* Returns <0 if s1 < s2
31* Returns 0 if s1 == s2
32* Returns >0 if s1 > s2
33* Returns _NLSCMPERROR is something went wrong
34*
35*Exceptions:
36* Input parameters are validated. Refer to the validation section of the function.
37*
38*******************************************************************************/
39
40extern "C" int __cdecl _mbscoll_l(
41 const unsigned char *s1,
42 const unsigned char *s2,
43 _locale_t plocinfo
44 )
45{
46 int ret;
47 _LocaleUpdate _loc_update(plocinfo);
48
49 /* validation section */
50 _VALIDATE_RETURN(s1 != nullptr, EINVAL, _NLSCMPERROR);
51 _VALIDATE_RETURN(s2 != nullptr, EINVAL, _NLSCMPERROR);
52
53 if (_loc_update.GetLocaleT()->mbcinfo->ismbcodepage == 0)
54 return _strcoll_l((const char *)s1, (const char *)s2, plocinfo);
55
56 if (0 == (ret = __acrt_CompareStringA(
57 _loc_update.GetLocaleT(),
58 _loc_update.GetLocaleT()->mbcinfo->mblocalename,
59 SORT_STRINGSORT,
60 (LPCSTR)s1,
61 -1,
62 (LPSTR)s2,
63 -1,
64 _loc_update.GetLocaleT()->mbcinfo->mbcodepage )))
65 {
66 errno = EINVAL;
67
68 return _NLSCMPERROR;
69 }
70
71 return ret - 2;
72
73}
74
75extern "C" int (__cdecl _mbscoll)(
76 const unsigned char *s1,
77 const unsigned char *s2
78 )
79{
80 return _mbscoll_l(s1, s2, nullptr);
81}