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04e0dc4a7a
Imported from https://www.nuget.org/packages/Microsoft.Windows.SDK.CRTSource/10.0.22621.3 License: MIT
67 lines
1.9 KiB
C++
67 lines
1.9 KiB
C++
/***
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*w_cmp.c - W versions of CompareString.
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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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* Wrapper for CompareStringW.
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*
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*******************************************************************************/
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#include <corecrt_internal.h>
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/***
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*int __cdecl __acrt_CompareStringW - Get type information about a wide string.
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*
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*Purpose:
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* Internal support function. Assumes info in wide string format.
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*
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*Entry:
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* LPCWSTR LocaleName - locale context for the comparison.
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* DWORD dwCmpFlags - see NT\Chicago docs
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* LPCWSTR lpStringn - wide string to be compared
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* int cchCountn - wide char (word) count (NOT including nullptr)
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* (-1 if nullptr terminated)
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*
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*Exit:
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* Success: 1 - if lpString1 < lpString2
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* 2 - if lpString1 == lpString2
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* 3 - if lpString1 > lpString2
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* Failure: 0
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*
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*Exceptions:
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*
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*******************************************************************************/
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extern "C" int __cdecl __acrt_CompareStringW(
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LPCWSTR LocaleName,
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DWORD dwCmpFlags,
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PCWCH lpString1,
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int cchCount1,
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PCWCH lpString2,
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int cchCount2
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)
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{
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/*
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* CompareString will compare past nullptr. Must find nullptr if in string
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* before cchCountn wide characters.
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*/
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if (cchCount1 > 0)
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cchCount1= (int) wcsnlen(lpString1, cchCount1);
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if (cchCount2 > 0)
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cchCount2= (int) wcsnlen(lpString2, cchCount2);
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if (!cchCount1 || !cchCount2)
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return (cchCount1 - cchCount2 == 0) ? 2 :
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(cchCount1 - cchCount2 < 0) ? 1 : 3;
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return __acrt_CompareStringEx( LocaleName,
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dwCmpFlags,
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lpString1,
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cchCount1,
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lpString2,
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cchCount2,
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nullptr,
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nullptr,
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0);
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}
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