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Rewrote SearchPathW().

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svn path=/trunk/; revision=2781
This commit is contained in:
Hartmut Birr 2002-03-25 21:09:18 +00:00
parent 329e4b6888
commit f4a1a5dd8e
1 changed files with 32 additions and 135 deletions
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167
reactos/lib/kernel32/file/dir.c
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@ -1,4 +1,4 @@
/* $Id: dir.c,v 1.28 2001/02/10 22:25:42 ekohl Exp $
/* $Id: dir.c,v 1.29 2002/03/25 21:09:18 hbirr Exp $
*
* COPYRIGHT: See COPYING in the top level directory
* PROJECT: ReactOS system libraries
@ -577,151 +577,48 @@ SearchPathW (
* On failure, zero.
*/
{
NTSTATUS errCode;
DWORD retCode = 0;
HANDLE FileHandle = NULL;
ULONG i,j;
WCHAR BufferW[MAX_PATH];
WCHAR FileAndExtensionW[MAX_PATH];
WCHAR *EnvironmentBufferW = NULL;
UNICODE_STRING PathString;
OBJECT_ATTRIBUTES ObjectAttributes;
IO_STATUS_BLOCK IoStatusBlock;
ULONG pos, len;
PWCHAR EnvironmentBufferW = NULL;
WCHAR Buffer;
DPRINT("SearchPath\n");
if ( lpPath == NULL )
if (lpPath == NULL)
{
// check the directory from which the application loaded
len = GetEnvironmentVariableW(L"PATH", &Buffer, 0);
len += 1 + GetCurrentDirectoryW(0, &Buffer);
len += 1 + GetSystemDirectoryW(&Buffer, 0);
len += 1 + GetWindowsDirectoryW(&Buffer, 0);
if ( GetCurrentDirectoryW( MAX_PATH, BufferW ) > 0 ) {
retCode = SearchPathW(BufferW,lpFileName, lpExtension, nBufferLength, lpBuffer, lpFilePart );
if ( retCode != 0 )
return retCode;
}
if ( GetSystemDirectoryW( BufferW, MAX_PATH ) > 0 ) {
retCode = SearchPathW(BufferW,lpFileName, lpExtension, nBufferLength, lpBuffer, lpFilePart );
if ( retCode != 0 )
return retCode;
}
if ( GetWindowsDirectoryW( BufferW, MAX_PATH ) > 0 ) {
retCode = SearchPathW(BufferW,lpFileName, lpExtension, nBufferLength, lpBuffer, lpFilePart );
if ( retCode != 0 )
return retCode;
}
j = GetEnvironmentVariableW(L"Path",EnvironmentBufferW,0);
EnvironmentBufferW = (WCHAR *)RtlAllocateHeap(GetProcessHeap(),HEAP_GENERATE_EXCEPTIONS|HEAP_ZERO_MEMORY,(j+1)*sizeof(WCHAR));
j = GetEnvironmentVariableW(L"Path",EnvironmentBufferW,j+1);
for(i=0;i<j;i++) {
if ( EnvironmentBufferW[i] == L';' )
EnvironmentBufferW[i] = 0;
}
i = 0;
while ( retCode == 0 && i < j ) {
if ( EnvironmentBufferW[i] != 0 )
retCode = SearchPathW(&EnvironmentBufferW[i],lpFileName, lpExtension, nBufferLength, lpBuffer, lpFilePart );
i += lstrlenW(&EnvironmentBufferW[i]) + 1;
}
RtlFreeHeap(GetProcessHeap(),0,EnvironmentBufferW);
return retCode;
}
else
{
FileAndExtensionW[0] = 0;
lpBuffer[0] = 0;
i = lstrlenW(lpFileName);
j = lstrlenW(lpPath);
if ( i + j + 8 < nBufferLength )
return i + j + 9;
if ( lpExtension != NULL )
EnvironmentBufferW = (PWCHAR) RtlAllocateHeap(GetProcessHeap(),
HEAP_GENERATE_EXCEPTIONS|HEAP_ZERO_MEMORY,
len * sizeof(WCHAR));
if (EnvironmentBufferW == NULL)
{
if ( lpFileName[i-4] != L'.' ) {
wcscpy(FileAndExtensionW,lpFileName);
wcscat(FileAndExtensionW,lpExtension);
}
else
wcscpy(FileAndExtensionW,lpFileName);
}
else
wcscpy(FileAndExtensionW,lpFileName);
lstrcatW(BufferW,L"\\??\\");
lstrcatW(BufferW,lpPath);
//printf("%S\n",FileAndExtensionW);
i = wcslen(BufferW);
if ( BufferW[i-1] != L'\\' )
{
BufferW[i] = L'\\';
BufferW[i+1] = 0;
}
if ( lpFilePart != NULL )
{
*lpFilePart = &BufferW[wcslen(BufferW)+1];
wcscpy(FileAndExtensionW,lpFileName);
}
else
wcscpy(FileAndExtensionW,lpFileName);
lstrcatW(BufferW,L"\\??\\");
lstrcatW(BufferW,lpPath);
//printf("%S\n",FileAndExtensionW);
i = wcslen(BufferW);
if ( BufferW[i-1] != L'\\' ) {
BufferW[i] = L'\\';
BufferW[i+1] = 0;
}
if ( lpFilePart != NULL )
*lpFilePart = &BufferW[wcslen(BufferW)+1];
wcscat(BufferW,FileAndExtensionW);
//printf("%S\n",lpBuffer);
PathString.Buffer = BufferW;
PathString.Length = lstrlenW(PathString.Buffer)*sizeof(WCHAR);
PathString.MaximumLength = PathString.Length + sizeof(WCHAR);
ObjectAttributes.Length = sizeof(OBJECT_ATTRIBUTES);
ObjectAttributes.RootDirectory = NULL;
ObjectAttributes.ObjectName = &PathString;
ObjectAttributes.Attributes = OBJ_CASE_INSENSITIVE| OBJ_INHERIT;
ObjectAttributes.SecurityDescriptor = NULL;
ObjectAttributes.SecurityQualityOfService = NULL;
errCode = NtOpenFile(
&FileHandle,
GENERIC_ALL|FILE_LIST_DIRECTORY,
&ObjectAttributes,
&IoStatusBlock,
FILE_SHARE_READ|FILE_SHARE_WRITE|FILE_SHARE_DELETE,
0
);
if ( !NT_SUCCESS(errCode) ) {
return 0;
}
else {
NtClose(FileHandle);
wcscpy(lpBuffer,&BufferW[4]);
*lpFilePart = wcsrchr(lpBuffer,'\\')+1;
}
return lstrlenW(lpBuffer);
pos = GetCurrentDirectoryW(len, EnvironmentBufferW);
EnvironmentBufferW[pos++] = L';';
EnvironmentBufferW[pos] = 0;
pos += GetSystemDirectoryW(&EnvironmentBufferW[pos], len - pos);
EnvironmentBufferW[pos++] = L';';
EnvironmentBufferW[pos] = 0;
pos += GetWindowsDirectoryW(&EnvironmentBufferW[pos], len - pos);
EnvironmentBufferW[pos++] = L';';
EnvironmentBufferW[pos] = 0;
pos += GetEnvironmentVariableW(L"PATH", &EnvironmentBufferW[pos], len - pos);
lpPath = EnvironmentBufferW;
}
retCode = RtlDosSearchPath_U ((PWCHAR)lpPath, (PWCHAR)lpFileName, (PWCHAR)lpExtension, nBufferLength, lpBuffer, lpFilePart);
if (EnvironmentBufferW != NULL)
{
RtlFreeHeap(GetProcessHeap(), 0, EnvironmentBufferW);
}
return retCode;
}
/* EOF */