mirror of
https://github.com/Chuyu-Team/VC-LTL5.git
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mingkuang
102 lines
2.9 KiB
C++
102 lines
2.9 KiB
C++
/***
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*wcsicoll.c - Collate wide-character locale strings without regard to case
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*
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* Copyright (c) Microsoft Corporation. All rights reserved.
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*
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*Purpose:
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* Compare two wchar_t strings using the locale LC_COLLATE information
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* without regard to case.
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*
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*******************************************************************************/
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#include <corecrt_internal.h>
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#include <ctype.h>
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#include <locale.h>
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#include <string.h>
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#pragma warning(disable:__WARNING_POTENTIAL_BUFFER_OVERFLOW_NULLTERMINATED) // 26018 Prefast can't see that we are checking for terminal nul.
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/***
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*int _wcsicoll() - Collate wide-character locale strings without regard to case
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*
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*Purpose:
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* Compare two wchar_t strings using the locale LC_COLLATE information
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* without regard to case.
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* In the C locale, _wcsicmp() is used to make the comparison.
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*
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*Entry:
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* const wchar_t *s1 = pointer to the first string
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* const wchar_t *s2 = pointer to the second string
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*
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*Exit:
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* -1 = first string less than second string
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* 0 = strings are equal
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* 1 = first string greater than second string
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* Returns _NLSCMPERROR is something went wrong
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* This range of return values may differ from other *cmp/*coll functions.
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*
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*Exceptions:
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* Input parameters are validated. Refer to the validation section of the function.
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*
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*******************************************************************************/
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#if WindowsTargetPlatformMinVersion < WindowsTargetPlatformWindows6
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extern "C" int __cdecl _wcsicoll_l (
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const wchar_t *_string1,
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const wchar_t *_string2,
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_locale_t plocinfo
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)
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{
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int ret;
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//_LocaleUpdate _loc_update(plocinfo);
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/* validation section */
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_VALIDATE_RETURN(_string1 != nullptr, EINVAL, _NLSCMPERROR );
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_VALIDATE_RETURN(_string2 != nullptr, EINVAL, _NLSCMPERROR );
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const auto _lc_collate = (plocinfo ? plocinfo->locinfo->lc_handle : ___lc_handle_func())[LC_COLLATE];
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if ( _lc_collate == 0 )
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{
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return __ascii_wcsicmp(_string1, _string2);
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}
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if ( 0 == (ret = __acrt_CompareStringW(
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_lc_collate,
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SORT_STRINGSORT | NORM_IGNORECASE,
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_string1,
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-1,
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_string2,
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-1)) )
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{
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errno = EINVAL;
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return _NLSCMPERROR;
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}
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return (ret - 2);
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}
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_LCRT_DEFINE_IAT_SYMBOL(_wcsicoll_l);
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#endif
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#if 0
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extern "C" int __cdecl _wcsicoll (
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const wchar_t *_string1,
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const wchar_t *_string2
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)
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{
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if (!__acrt_locale_changed())
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{
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/* validation section */
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_VALIDATE_RETURN(_string1 != nullptr, EINVAL, _NLSCMPERROR );
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_VALIDATE_RETURN(_string2 != nullptr, EINVAL, _NLSCMPERROR );
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return __ascii_wcsicmp(_string1, _string2);
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}
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else
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{
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return _wcsicoll_l(_string1, _string2, nullptr);
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}
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}
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#endif
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