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 41 extern "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 } 75 extern "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 } 83