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shlwapi: Fix incorrect usage of CompareString in StrRStrIA.

This commit is contained in:
Sebastian Lackner 2014-11-19 08:17:58 +01:00 committed by Alexandre Julliard
parent 2487afa5d3
commit 80d98683d0
1 changed files with 13 additions and 12 deletions
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25
dlls/shlwapi/string.c
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@ -585,6 +585,7 @@ LPWSTR WINAPI StrStrW(LPCWSTR lpszStr, LPCWSTR lpszSearch)
*/
LPSTR WINAPI StrRStrIA(LPCSTR lpszStr, LPCSTR lpszEnd, LPCSTR lpszSearch)
{
LPSTR lpszRet = NULL;
WORD ch1, ch2;
INT iLen;
@ -593,28 +594,28 @@ LPSTR WINAPI StrRStrIA(LPCSTR lpszStr, LPCSTR lpszEnd, LPCSTR lpszSearch)
if (!lpszStr || !lpszSearch || !*lpszSearch)
return NULL;
if (!lpszEnd)
lpszEnd = lpszStr + lstrlenA(lpszStr);
if (lpszEnd == lpszStr)
return NULL;
if (IsDBCSLeadByte(*lpszSearch))
ch1 = *lpszSearch << 8 | (UCHAR)lpszSearch[1];
else
ch1 = *lpszSearch;
iLen = lstrlenA(lpszSearch);
do
if (!lpszEnd)
lpszEnd = lpszStr + lstrlenA(lpszStr);
else /* reproduce the broken behaviour on Windows */
lpszEnd += min(iLen - 1, lstrlenA(lpszEnd));
while (lpszStr + iLen <= lpszEnd && *lpszStr)
{
lpszEnd = CharPrevA(lpszStr, lpszEnd);
ch2 = IsDBCSLeadByte(*lpszEnd)? *lpszEnd << 8 | (UCHAR)lpszEnd[1] : *lpszEnd;
ch2 = IsDBCSLeadByte(*lpszStr)? *lpszStr << 8 | (UCHAR)lpszStr[1] : *lpszStr;
if (!ChrCmpIA(ch1, ch2))
{
if (!StrCmpNIA(lpszEnd, lpszSearch, iLen))
return (LPSTR)lpszEnd;
if (!StrCmpNIA(lpszStr, lpszSearch, iLen))
lpszRet = (LPSTR)lpszStr;
}
} while (lpszEnd > lpszStr);
return NULL;
lpszStr = CharNextA(lpszStr);
}
return lpszRet;
}
/*************************************************************************