mirror of
https://github.com/reactos/reactos.git
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122 lines
2.5 KiB
C
122 lines
2.5 KiB
C
/*
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* COPYRIGHT: See COPYING in the top level directory
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* PROJECT: ReactOS system libraries
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* FILE: lib/sdk/crt/stdlib/senv.c
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* PURPOSE: Unknown
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* PROGRAMER: Unknown
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* UPDATE HISTORY:
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* 25/11/05: Added license header
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*/
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#include <precomp.h>
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#include <stdlib.h>
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#include <string.h>
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#include <tchar.h>
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#ifdef _UNICODE
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#define sT "S"
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#else
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#define sT "s"
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#endif
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#define MK_STR(s) #s
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/*
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* @implemented
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*/
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void _tsearchenv(const _TCHAR* file,const _TCHAR* var,_TCHAR* path)
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{
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_TCHAR* env = _tgetenv(var);
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_TCHAR* x;
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_TCHAR* y;
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_TCHAR* FilePart;
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TRACE(MK_STR(_tsearchenv)"()\n");
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x = _tcschr(env,'=');
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if ( x != NULL ) {
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*x = 0;
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x++;
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}
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y = _tcschr(env,';');
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while ( y != NULL ) {
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*y = 0;
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if ( SearchPath(x,file,NULL,MAX_PATH,path,&FilePart) > 0 ) {
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return;
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}
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x = y+1;
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y = _tcschr(env,';');
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}
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return;
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}
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/*********************************************************************
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* _searchenv_s (MSVCRT.@)
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*/
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int _tsearchenv_s(const _TCHAR* file, const _TCHAR* env, _TCHAR *buf, size_t count)
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{
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_TCHAR *envVal, *penv;
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_TCHAR curPath[MAX_PATH];
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if (!MSVCRT_CHECK_PMT(file != NULL) || !MSVCRT_CHECK_PMT(buf != NULL) ||
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!MSVCRT_CHECK_PMT(count > 0))
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{
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*_errno() = EINVAL;
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return EINVAL;
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}
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*buf = '\0';
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/* Try CWD first */
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if (GetFileAttributes( file ) != INVALID_FILE_ATTRIBUTES)
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{
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GetFullPathName( file, MAX_PATH, buf, NULL );
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_dosmaperr(GetLastError());
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return 0;
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}
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/* Search given environment variable */
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envVal = _tgetenv(env);
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if (!envVal)
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{
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_set_errno(ENOENT);
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return ENOENT;
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}
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penv = envVal;
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do
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{
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_TCHAR *end = penv;
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while(*end && *end != ';') end++; /* Find end of next path */
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if (penv == end || !*penv)
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{
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_set_errno(ENOENT);
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return ENOENT;
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}
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memcpy(curPath, penv, (end - penv) * sizeof(_TCHAR));
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if (curPath[end - penv] != '/' && curPath[end - penv] != '\\')
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{
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curPath[end - penv] = '\\';
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curPath[end - penv + 1] = '\0';
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}
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else
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curPath[end - penv] = '\0';
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_tcscat(curPath, file);
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if (GetFileAttributes( curPath ) != INVALID_FILE_ATTRIBUTES)
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{
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if (_tcslen(curPath) + 1 > count)
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{
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MSVCRT_INVALID_PMT("buf[count] is too small", ERANGE);
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return ERANGE;
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}
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_tcscpy(buf, curPath);
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return 0;
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}
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penv = *end ? end + 1 : end;
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} while(1);
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}
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