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74 lines
1.6 KiB
C
74 lines
1.6 KiB
C
/*
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* COPYRIGHT: See COPYING in the top level directory
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* PROJECT: ReactOS CRT library
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* FILE: lib/sdk/crt/stdlib/fullpath.c
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* PURPOSE: Gets the fullpathname
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* PROGRAMER: Pierre Schweitzer (pierre.schweitzer@reactos.org)
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*/
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#include <precomp.h>
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#include <tchar.h>
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/*
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* @implemented
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*/
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_TCHAR* _tfullpath(_TCHAR* absPath, const _TCHAR* relPath, size_t maxLength)
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{
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_TCHAR* lpBuffer;
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_TCHAR* lpFilePart;
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DWORD retval;
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/* First check if entry relative path was given */
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if (!relPath || relPath[0] == 0)
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{
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/* If not, just try to return current dir */
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return _tgetcwd(absPath, maxLength);
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}
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/* If no output buffer was given */
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if (!absPath)
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{
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/* Allocate one with fixed length */
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maxLength = MAX_PATH;
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lpBuffer = malloc(maxLength);
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if (!lpBuffer)
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{
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errno = ENOMEM;
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return NULL;
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}
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}
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else
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{
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lpBuffer = absPath;
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}
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/* Really get full path */
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retval = GetFullPathName(relPath, (DWORD)maxLength, lpBuffer, &lpFilePart);
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/* Check for failures */
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if (retval > maxLength)
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{
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/* Path too long, free (if needed) and return */
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if (!absPath)
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{
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free(lpBuffer);
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}
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errno = ERANGE;
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return NULL;
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}
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else if (!retval)
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{
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/* Other error, free (if needed), translate error, and return */
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if (!absPath)
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{
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free(lpBuffer);
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}
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_dosmaperr(GetLastError());
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return NULL;
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}
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/* Return buffer. Up to the caller to free if needed */
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return lpBuffer;
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}
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