pathansi.c File Reference

#include <k32.h>

Include dependency graph for pathansi.c:

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Functions
DWORD WINAPI	GetShortPathNameA (IN LPCSTR lpszLongPath, OUT LPSTR lpszShortPath, IN DWORD cchBuffer)

Function Documentation

GetShortPathNameA()

DWORD WINAPI GetShortPathNameA	(	IN LPCSTR	lpszLongPath,
		OUT LPSTR	lpszShortPath,
		IN DWORD	cchBuffer
	)

Definition at line 20 of file pathansi.c.

{
    ULONG Result, PathLength;
    PWCHAR ShortPath;
    NTSTATUS Status;
    UNICODE_STRING LongPathUni, ShortPathUni;
    ANSI_STRING ShortPathAnsi;
    WCHAR ShortPathBuffer[MAX_PATH];
 
    ShortPath = NULL;
    ShortPathAnsi.Buffer = NULL;
    LongPathUni.Buffer = NULL;
    Result = 0;
 
    if (!lpszLongPath)
    {
        SetLastError(ERROR_INVALID_PARAMETER);
        return 0;
    }
 
    Status = Basep8BitStringToDynamicUnicodeString(&LongPathUni, lpszLongPath);
    if (!NT_SUCCESS(Status)) goto Quickie;
 
    ShortPath = ShortPathBuffer;
 
    PathLength = GetShortPathNameW(LongPathUni.Buffer, ShortPathBuffer, MAX_PATH);
    if (PathLength >= MAX_PATH)
    {
        ShortPath = RtlAllocateHeap(RtlGetProcessHeap(), 0, PathLength * sizeof(WCHAR));
        if (!ShortPath)
        {
            PathLength = 0;
            SetLastError(ERROR_NOT_ENOUGH_MEMORY);
        }
        else
        {
            PathLength = GetShortPathNameW(LongPathUni.Buffer, ShortPath, PathLength);
        }
    }
 
    if (!PathLength) goto Quickie;
 
    LongPathUni.MaximumLength = (USHORT)PathLength * sizeof(WCHAR) + sizeof(UNICODE_NULL);
    ShortPathUni.Buffer = ShortPath;
    ShortPathUni.Length = (USHORT)PathLength * sizeof(WCHAR);
 
    Status = BasepUnicodeStringTo8BitString(&ShortPathAnsi, &ShortPathUni, TRUE);
    if (!NT_SUCCESS(Status))
    {
        BaseSetLastNTError(Status);
        Result = 0;
    }
 
    Result = ShortPathAnsi.Length;
    if ((lpszShortPath) && (cchBuffer > ShortPathAnsi.Length))
    {
        RtlMoveMemory(lpszShortPath, ShortPathAnsi.Buffer, ShortPathAnsi.Length);
        lpszShortPath[Result] = ANSI_NULL;
    }
    else
    {
        Result = ShortPathAnsi.Length + sizeof(ANSI_NULL);
    }
 
Quickie:
    if (LongPathUni.Buffer) RtlFreeUnicodeString(&LongPathUni);
    if (ShortPathAnsi.Buffer) RtlFreeAnsiString(&ShortPathAnsi);
    if ((ShortPath) && (ShortPath != ShortPathBuffer))
    {
        RtlFreeHeap(RtlGetProcessHeap(), 0, ShortPath);
    }
    return Result;
}

Referenced by DosChangeDirectory(), DosKRNLInitialize(), DosLoadExecutable(), full_file_path_name_in_a_CWD(), okChildPath_(), PathGetShortPathA(), START_TEST(), StoreNameInSft(), test_drive_letter_case(), test_filenames(), test_GetLongPathNameA(), test_PathNameA(), test_relative_path(), test_SdbGetPermLayerKeys(), test_ShortPathCase(), and test_ValidPathA().