/*
* Copyright (c) 1995, 2003, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/*
* Posix-compatible directory access routines
*/
#include <windows.h>
#include <direct.h> /* For _getdrive() */
#include <errno.h>
#include <assert.h>
#include "dirent_md.h"
/* Caller must have already run dirname through JVM_NativePath, which removes
duplicate slashes and converts all instances of '/' into '\\'. */
DIR *
opendir(const char *dirname)
{
DIR *dirp = (DIR *)malloc(sizeof(DIR));
DWORD fattr;
char alt_dirname[4] = { 0, 0, 0, 0 };
if (dirp == 0) {
errno = ENOMEM;
return 0;
}
/*
* Win32 accepts "\" in its POSIX stat(), but refuses to treat it
* as a directory in FindFirstFile(). We detect this case here and
* prepend the current drive name.
*/
if (dirname[1] == '\0' && dirname[0] == '\\') {
alt_dirname[0] = _getdrive() + 'A' - 1;
alt_dirname[1] = ':';
alt_dirname[2] = '\\';
alt_dirname[3] = '\0';
dirname = alt_dirname;
}
dirp->path = (char *)malloc(strlen(dirname) + 5);
if (dirp->path == 0) {
free(dirp);
errno = ENOMEM;
return 0;
}
strcpy(dirp->path, dirname);
fattr = GetFileAttributes(dirp->path);
if (fattr == ((DWORD)-1)) {
free(dirp->path);
free(dirp);
errno = ENOENT;
return 0;
} else if ((fattr & FILE_ATTRIBUTE_DIRECTORY) == 0) {
free(dirp->path);
free(dirp);
errno = ENOTDIR;
return 0;
}
/* Append "*.*", or possibly "\\*.*", to path */
if (dirp->path[1] == ':'
&& (dirp->path[2] == '\0'
|| (dirp->path[2] == '\\' && dirp->path[3] == '\0'))) {
/* No '\\' needed for cases like "Z:" or "Z:\" */
strcat(dirp->path, "*.*");
} else {
strcat(dirp->path, "\\*.*");
}
dirp->handle = FindFirstFile(dirp->path, &dirp->find_data);
if (dirp->handle == INVALID_HANDLE_VALUE) {
if (GetLastError() != ERROR_FILE_NOT_FOUND) {
free(dirp->path);
free(dirp);
errno = EACCES;
return 0;
}
}
return dirp;
}
struct dirent *
readdir(DIR *dirp)
{
if (dirp->handle == INVALID_HANDLE_VALUE) {
return 0;
}
strcpy(dirp->dirent.d_name, dirp->find_data.cFileName);
if (!FindNextFile(dirp->handle, &dirp->find_data)) {
if (GetLastError() == ERROR_INVALID_HANDLE) {
errno = EBADF;
return 0;
}
FindClose(dirp->handle);
dirp->handle = INVALID_HANDLE_VALUE;
}
return &dirp->dirent;
}
int
closedir(DIR *dirp)
{
if (dirp->handle != INVALID_HANDLE_VALUE) {
if (!FindClose(dirp->handle)) {
errno = EBADF;
return -1;
}
dirp->handle = INVALID_HANDLE_VALUE;
}
free(dirp->path);
free(dirp);
return 0;
}
void
rewinddir(DIR *dirp)
{
if (dirp->handle != INVALID_HANDLE_VALUE) {
FindClose(dirp->handle);
}
dirp->handle = FindFirstFile(dirp->path, &dirp->find_data);
}