ObjFW  Artifact [96795739ab]

Artifact 96795739abf286f08b8d2f14a79485942232ca64b0ebeccc534c27eadeaaa7cb:

• File src/OFFileManager.m — part of check-in [fe2cbe0021] at 2018-04-22 16:13:04 on branch trunk — runtime: Define BOOL to be the same as bool

  As we define the ABI, we can just replace BOOL with bool everywhere,
  including in ObjFW itself. For the Apple platforms where BOOL and bool
  are different, this is not a problem as BOOL and bool are passed and
  returned the same way in the ABI.

  This still defines BOOL to bool for compatibility, except on AmigaOS and
  Wii, which both have its own BOOL type. (user: js, size: 21906) [annotate] [blame] [check-ins using]

/*
 * Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017,
 *               2018
 *   Jonathan Schleifer <js@heap.zone>
 *
 * All rights reserved.
 *
 * This file is part of ObjFW. It may be distributed under the terms of the
 * Q Public License 1.0, which can be found in the file LICENSE.QPL included in
 * the packaging of this file.
 *
 * Alternatively, it may be distributed under the terms of the GNU General
 * Public License, either version 2 or 3, which can be found in the file
 * LICENSE.GPLv2 or LICENSE.GPLv3 respectively included in the packaging of this
 * file.
 */

#include "config.h"

#include <errno.h>
#include <limits.h>

#include "unistd_wrapper.h"

#ifdef OF_PSP
# include <sys/syslimits.h>
#endif

#import "OFArray.h"
#import "OFDate.h"
#import "OFDictionary.h"
#import "OFFile.h"
#import "OFFileManager.h"
#import "OFLocalization.h"
#import "OFNumber.h"
#import "OFString.h"
#import "OFSystemInfo.h"
#import "OFURL.h"
#import "OFURLHandler.h"

#import "OFChangeCurrentDirectoryPathFailedException.h"
#import "OFCopyItemFailedException.h"
#import "OFGetCurrentDirectoryPathFailedException.h"
#import "OFInvalidArgumentException.h"
#import "OFMoveItemFailedException.h"
#import "OFOutOfMemoryException.h"
#import "OFOutOfRangeException.h"
#import "OFRemoveItemFailedException.h"
#import "OFRetrieveItemAttributesFailedException.h"
#import "OFUndefinedKeyException.h"
#import "OFUnsupportedProtocolException.h"

#ifdef OF_WINDOWS
# include <windows.h>
# include <direct.h>
# include <ntdef.h>
#endif

#ifdef OF_MORPHOS
# include <proto/dos.h>
# include <proto/locale.h>
#endif

@interface OFFileManager_default: OFFileManager
@end

static OFFileManager *defaultManager;

const of_file_attribute_key_t of_file_attribute_key_size =
    @"of_file_attribute_key_size";
const of_file_attribute_key_t of_file_attribute_key_type =
    @"of_file_attribute_key_type";
const of_file_attribute_key_t of_file_attribute_key_posix_permissions =
    @"of_file_attribute_key_posix_permissions";
const of_file_attribute_key_t of_file_attribute_key_posix_uid =
    @"of_file_attribute_key_posix_uid";
const of_file_attribute_key_t of_file_attribute_key_posix_gid =
    @"of_file_attribute_key_posix_gid";
const of_file_attribute_key_t of_file_attribute_key_owner =
    @"of_file_attribute_key_owner";
const of_file_attribute_key_t of_file_attribute_key_group =
    @"of_file_attribute_key_group";
const of_file_attribute_key_t of_file_attribute_key_last_access_date =
    @"of_file_attribute_key_last_access_date";
const of_file_attribute_key_t of_file_attribute_key_modification_date =
    @"of_file_attribute_key_modification_date";
const of_file_attribute_key_t of_file_attribute_key_status_change_date =
    @"of_file_attribute_key_status_change_date";
const of_file_attribute_key_t of_file_attribute_key_symbolic_link_destination =
    @"of_file_attribute_key_symbolic_link_destination";

const of_file_type_t of_file_type_regular = @"of_file_type_regular";
const of_file_type_t of_file_type_directory = @"of_file_type_directory";
const of_file_type_t of_file_type_symbolic_link = @"of_file_type_symbolic_link";
const of_file_type_t of_file_type_fifo = @"of_file_type_fifo";
const of_file_type_t of_file_type_character_special =
    @"of_file_type_character_special";
const of_file_type_t of_file_type_block_special = @"of_file_type_block_special";
const of_file_type_t of_file_type_socket = @"of_file_type_socket";

#ifdef OF_MORPHOS
static bool dirChanged = false;
static BPTR originalDirLock = 0;

OF_DESTRUCTOR()
{
	if (dirChanged)
		UnLock(CurrentDir(originalDirLock));
}
#endif

static id
attributeForKeyOrException(of_file_attributes_t attributes,
    of_file_attribute_key_t key)
{
	id object = [attributes objectForKey: key];

	if (object == nil)
		@throw [OFUndefinedKeyException exceptionWithObject: attributes
								key: key];

	return object;
}

@implementation OFFileManager
+ (void)initialize
{
	if (self != [OFFileManager class])
		return;

	defaultManager = [[OFFileManager_default alloc] init];
}

+ (OFFileManager *)defaultManager
{
	return defaultManager;
}

- (OFString *)currentDirectoryPath
{
#if defined(OF_WINDOWS)
	OFString *ret;
	wchar_t *buffer = _wgetcwd(NULL, 0);

	@try {
		ret = [OFString stringWithUTF16String: buffer];
	} @finally {
		free(buffer);
	}

	return ret;
#elif defined(OF_MORPHOS)
	char buffer[512];

	if (!NameFromLock(((struct Process *)FindTask(NULL))->pr_CurrentDir,
	    buffer, 512)) {
		if (IoErr() == ERROR_LINE_TOO_LONG)
			@throw [OFOutOfRangeException exception];

		return nil;
	}

	return [OFString stringWithCString: buffer
				  encoding: [OFLocalization encoding]];
#else
	char buffer[PATH_MAX];

	if ((getcwd(buffer, PATH_MAX)) == NULL)
		@throw [OFGetCurrentDirectoryPathFailedException
		    exceptionWithErrNo: errno];

# ifdef OF_DJGPP
	/*
	 * For some reason, getcwd() returns forward slashes on DJGPP, even
	 * though the native format is to use backwards slashes.
	 */
	for (char *tmp = buffer; *tmp != '\0'; tmp++)
		if (*tmp == '/')
			*tmp = '\\';
# endif

	return [OFString stringWithCString: buffer
				  encoding: [OFLocalization encoding]];
#endif
}

- (OFURL *)currentDirectoryURL
{
	void *pool = objc_autoreleasePoolPush();
	OFURL *ret;

	ret = [OFURL fileURLWithPath: [self currentDirectoryPath]];

	[ret retain];
	objc_autoreleasePoolPop(pool);
	return [ret autorelease];
}

- (of_file_attributes_t)attributesOfItemAtURL: (OFURL *)URL
{
	OFURLHandler *URLHandler;

	if (URL == nil)
		@throw [OFInvalidArgumentException exception];

	if ((URLHandler = [OFURLHandler handlerForURL: URL]) == nil)
		@throw [OFUnsupportedProtocolException exceptionWithURL: URL];

	return [URLHandler attributesOfItemAtURL: URL];
}

- (of_file_attributes_t)attributesOfItemAtPath: (OFString *)path
{
	void *pool = objc_autoreleasePoolPush();
	of_file_attributes_t ret;

	ret = [self attributesOfItemAtURL: [OFURL fileURLWithPath: path]];

	[ret retain];

	objc_autoreleasePoolPop(pool);

	return [ret autorelease];
}

- (void)setAttributes: (of_file_attributes_t)attributes
	  ofItemAtURL: (OFURL *)URL
{
	OFURLHandler *URLHandler;

	if (URL == nil)
		@throw [OFInvalidArgumentException exception];

	if ((URLHandler = [OFURLHandler handlerForURL: URL]) == nil)
		@throw [OFUnsupportedProtocolException exceptionWithURL: URL];

	[URLHandler setAttributes: attributes
		      ofItemAtURL: URL];
}

- (void)setAttributes: (of_file_attributes_t)attributes
	 ofItemAtPath: (OFString *)path
{
	void *pool = objc_autoreleasePoolPush();

	[self setAttributes: attributes
		ofItemAtURL: [OFURL fileURLWithPath: path]];

	objc_autoreleasePoolPop(pool);
}

- (bool)fileExistsAtURL: (OFURL *)URL
{
	OFURLHandler *URLHandler;

	if (URL == nil)
		@throw [OFInvalidArgumentException exception];

	if ((URLHandler = [OFURLHandler handlerForURL: URL]) == nil)
		@throw [OFUnsupportedProtocolException exceptionWithURL: URL];

	return [URLHandler fileExistsAtURL: URL];
}

- (bool)fileExistsAtPath: (OFString *)path
{
	void *pool = objc_autoreleasePoolPush();
	bool ret;

	ret = [self fileExistsAtURL: [OFURL fileURLWithPath: path]];

	objc_autoreleasePoolPop(pool);

	return ret;
}

- (bool)directoryExistsAtURL: (OFURL *)URL
{
	OFURLHandler *URLHandler;

	if (URL == nil)
		@throw [OFInvalidArgumentException exception];

	if ((URLHandler = [OFURLHandler handlerForURL: URL]) == nil)
		@throw [OFUnsupportedProtocolException exceptionWithURL: URL];

	return [URLHandler directoryExistsAtURL: URL];
}

- (bool)directoryExistsAtPath: (OFString *)path
{
	void *pool = objc_autoreleasePoolPush();
	bool ret;

	ret = [self directoryExistsAtURL: [OFURL fileURLWithPath: path]];

	objc_autoreleasePoolPop(pool);

	return ret;
}

- (void)createDirectoryAtURL: (OFURL *)URL
{
	OFURLHandler *URLHandler;

	if (URL == nil)
		@throw [OFInvalidArgumentException exception];

	if ((URLHandler = [OFURLHandler handlerForURL: URL]) == nil)
		@throw [OFUnsupportedProtocolException exceptionWithURL: URL];

	[URLHandler createDirectoryAtURL: URL];
}

- (void)createDirectoryAtURL: (OFURL *)URL_
	       createParents: (bool)createParents
{
	void *pool = objc_autoreleasePoolPush();
	OFMutableURL *URL = [[URL_ mutableCopy] autorelease];
	OFArray OF_GENERIC(OFString *) *components;
	OFString *currentPath = nil;

	if (URL == nil)
		@throw [OFInvalidArgumentException exception];

	if (!createParents) {
		[self createDirectoryAtURL: URL];
		return;
	}

	components = [[URL URLEncodedPath] componentsSeparatedByString: @"/"];

	for (OFString *component in components) {
		if (currentPath != nil)
			currentPath = [currentPath
			    stringByAppendingFormat: @"/%@", component];
		else
			currentPath = component;

		[URL setURLEncodedPath: currentPath];

		if ([currentPath length] > 0 &&
		    ![self directoryExistsAtURL: URL])
			[self createDirectoryAtURL: URL];
	}

	objc_autoreleasePoolPop(pool);
}

- (void)createDirectoryAtPath: (OFString *)path
{
	void *pool = objc_autoreleasePoolPush();

	[self createDirectoryAtURL: [OFURL fileURLWithPath: path]];

	objc_autoreleasePoolPop(pool);
}

- (void)createDirectoryAtPath: (OFString *)path
		createParents: (bool)createParents
{
	void *pool = objc_autoreleasePoolPush();

	[self createDirectoryAtURL: [OFURL fileURLWithPath: path]
		     createParents: createParents];

	objc_autoreleasePoolPop(pool);
}

- (OFArray OF_GENERIC(OFString *) *)contentsOfDirectoryAtURL: (OFURL *)URL
{
	OFURLHandler *URLHandler;

	if (URL == nil)
		@throw [OFInvalidArgumentException exception];

	if ((URLHandler = [OFURLHandler handlerForURL: URL]) == nil)
		@throw [OFUnsupportedProtocolException exceptionWithURL: URL];

	return [URLHandler contentsOfDirectoryAtURL: URL];
}

- (OFArray OF_GENERIC(OFString *) *)contentsOfDirectoryAtPath: (OFString *)path
{
	void *pool = objc_autoreleasePoolPush();
	OFArray OF_GENERIC(OFString *) *ret;

	ret = [self contentsOfDirectoryAtURL: [OFURL fileURLWithPath: path]];

	[ret retain];

	objc_autoreleasePoolPop(pool);

	return [ret autorelease];
}

- (void)changeCurrentDirectoryPath: (OFString *)path
{
	if (path == nil)
		@throw [OFInvalidArgumentException exception];

#if defined(OF_WINDOWS)
	if (_wchdir([path UTF16String]) != 0)
		@throw [OFChangeCurrentDirectoryPathFailedException
		    exceptionWithPath: path
				errNo: errno];
#elif defined(OF_MORPHOS)
	BPTR lock, oldLock;

	if ((lock = Lock([path cStringWithEncoding: [OFLocalization encoding]],
	    SHARED_LOCK)) == 0) {
		int errNo;

		switch (IoErr()) {
		case ERROR_OBJECT_IN_USE:
		case ERROR_DISK_NOT_VALIDATED:
			errNo = EBUSY;
			break;
		case ERROR_OBJECT_NOT_FOUND:
			errNo = ENOENT;
			break;
		default:
			errNo = 0;
			break;
		}

		@throw [OFChangeCurrentDirectoryPathFailedException
		    exceptionWithPath: path
				errNo: errNo];
	}

	oldLock = CurrentDir(lock);

	if (!dirChanged)
		originalDirLock = oldLock;
	else
		UnLock(oldLock);

	dirChanged = true;
#else
	if (chdir([path cStringWithEncoding: [OFLocalization encoding]]) != 0)
		@throw [OFChangeCurrentDirectoryPathFailedException
		    exceptionWithPath: path
				errNo: errno];
#endif
}

- (void)changeCurrentDirectoryURL: (OFURL *)URL
{
	void *pool = objc_autoreleasePoolPush();

	[self changeCurrentDirectoryPath: [URL fileSystemRepresentation]];

	objc_autoreleasePoolPop(pool);
}

- (void)copyItemAtPath: (OFString *)source
		toPath: (OFString *)destination
{
	void *pool = objc_autoreleasePoolPush();

	[self copyItemAtURL: [OFURL fileURLWithPath: source]
		      toURL: [OFURL fileURLWithPath: destination]];

	objc_autoreleasePoolPop(pool);
}

- (void)copyItemAtURL: (OFURL *)source
		toURL: (OFURL *)destination
{
	void *pool;
	OFURLHandler *URLHandler;
	of_file_attributes_t attributes;
	of_file_type_t type;

	if (source == nil || destination == nil)
		@throw [OFInvalidArgumentException exception];

	pool = objc_autoreleasePoolPush();

	if ((URLHandler = [OFURLHandler handlerForURL: source]) == nil)
		@throw [OFUnsupportedProtocolException
		    exceptionWithURL: source];

	if ([URLHandler copyItemAtURL: source
				toURL: destination])
		return;

	if ([self fileExistsAtURL: destination])
		@throw [OFCopyItemFailedException
		    exceptionWithSourceURL: source
			    destinationURL: destination
				     errNo: EEXIST];

	@try {
		attributes = [self attributesOfItemAtURL: source];
	} @catch (OFRetrieveItemAttributesFailedException *e) {
		@throw [OFCopyItemFailedException
		    exceptionWithSourceURL: source
			    destinationURL: destination
				     errNo: [e errNo]];
	}

	type = [attributes fileType];

	if ([type isEqual: of_file_type_directory]) {
		OFArray *contents;

		@try {
			[self createDirectoryAtURL: destination];

#ifdef OF_FILE_MANAGER_SUPPORTS_PERMISSIONS
			of_file_attribute_key_t key =
			    of_file_attribute_key_posix_permissions;
			OFNumber *permissions = [attributes objectForKey: key];
			of_file_attributes_t destinationAttributes =
			    [OFDictionary dictionaryWithObject: permissions
							forKey: key];

			[self setAttributes: destinationAttributes
				ofItemAtURL: destination];
#endif

			contents = [self contentsOfDirectoryAtURL: source];
		} @catch (id e) {
			/*
			 * Only convert exceptions to OFCopyItemFailedException
			 * that have an errNo property. This covers all I/O
			 * related exceptions from the operations used to copy
			 * an item, all others should be left as is.
			 */
			if ([e respondsToSelector: @selector(errNo)])
				@throw [OFCopyItemFailedException
				    exceptionWithSourceURL: source
					    destinationURL: destination
						     errNo: [e errNo]];

			@throw e;
		}

		for (OFString *item in contents) {
			void *pool2 = objc_autoreleasePoolPush();
			OFURL *sourceURL, *destinationURL;

			sourceURL =
			    [source URLByAppendingPathComponent: item];
			destinationURL =
			    [destination URLByAppendingPathComponent: item];

			[self copyItemAtURL: sourceURL
				      toURL: destinationURL];

			objc_autoreleasePoolPop(pool2);
		}
	} else if ([type isEqual: of_file_type_regular]) {
		size_t pageSize = [OFSystemInfo pageSize];
		OFStream *sourceStream = nil;
		OFStream *destinationStream = nil;
		char *buffer;

		if ((buffer = malloc(pageSize)) == NULL)
			@throw [OFOutOfMemoryException
			    exceptionWithRequestedSize: pageSize];

		@try {
			sourceStream = [[OFURLHandler handlerForURL: source]
			    openItemAtURL: source
				     mode: @"r"];
			destinationStream = [[OFURLHandler handlerForURL:
			    destination] openItemAtURL: destination
						  mode: @"w"];

			while (![sourceStream isAtEndOfStream]) {
				size_t length;

				length = [sourceStream
				    readIntoBuffer: buffer
					    length: pageSize];
				[destinationStream writeBuffer: buffer
							length: length];
			}

#ifdef OF_FILE_MANAGER_SUPPORTS_PERMISSIONS
			of_file_attribute_key_t key =
			    of_file_attribute_key_posix_permissions;
			OFNumber *permissions = [attributes objectForKey: key];
			of_file_attributes_t destinationAttributes =
			    [OFDictionary dictionaryWithObject: permissions
							forKey: key];

			[self setAttributes: destinationAttributes
				ofItemAtURL: destination];
#endif
		} @catch (id e) {
			/*
			 * Only convert exceptions to OFCopyItemFailedException
			 * that have an errNo property. This covers all I/O
			 * related exceptions from the operations used to copy
			 * an item, all others should be left as is.
			 */
			if ([e respondsToSelector: @selector(errNo)])
				@throw [OFCopyItemFailedException
				    exceptionWithSourceURL: source
					    destinationURL: destination
						     errNo: [e errNo]];

			@throw e;
		} @finally {
			[sourceStream close];
			[destinationStream close];
			free(buffer);
		}
#ifdef OF_FILE_MANAGER_SUPPORTS_SYMLINKS
	} else if ([type isEqual: of_file_type_symbolic_link]) {
		@try {
			OFString *linkDestination =
			    [attributes fileSymbolicLinkDestination];

			[self createSymbolicLinkAtURL: destination
				  withDestinationPath: linkDestination];
		} @catch (id e) {
			/*
			 * Only convert exceptions to OFCopyItemFailedException
			 * that have an errNo property. This covers all I/O
			 * related exceptions from the operations used to copy
			 * an item, all others should be left as is.
			 */
			if ([e respondsToSelector: @selector(errNo)])
				@throw [OFCopyItemFailedException
				    exceptionWithSourceURL: source
					    destinationURL: destination
						     errNo: [e errNo]];

			@throw e;
		}
#endif
	} else
		@throw [OFCopyItemFailedException
		    exceptionWithSourceURL: source
			    destinationURL: destination
				     errNo: EINVAL];

	objc_autoreleasePoolPop(pool);
}

- (void)moveItemAtPath: (OFString *)source
		toPath: (OFString *)destination
{
	void *pool = objc_autoreleasePoolPush();

	[self moveItemAtURL: [OFURL fileURLWithPath: source]
		      toURL: [OFURL fileURLWithPath: destination]];

	objc_autoreleasePoolPop(pool);
}

- (void)moveItemAtURL: (OFURL *)source
		toURL: (OFURL *)destination
{
	void *pool;
	OFURLHandler *URLHandler;

	if (source == nil || destination == nil)
		@throw [OFInvalidArgumentException exception];

	pool = objc_autoreleasePoolPush();

	if ((URLHandler = [OFURLHandler handlerForURL: source]) == nil)
		@throw [OFUnsupportedProtocolException
		    exceptionWithURL: source];

	@try {
		if ([URLHandler moveItemAtURL: source
					toURL: destination])
			return;
	} @catch (OFMoveItemFailedException *e) {
		if ([e errNo] != EXDEV)
			@throw e;
	}

	if ([self fileExistsAtURL: destination])
		@throw [OFMoveItemFailedException
		    exceptionWithSourceURL: source
			    destinationURL: destination
				     errNo: EEXIST];

	@try {
		[self copyItemAtURL: source
			      toURL: destination];
	} @catch (OFCopyItemFailedException *e) {
		[self removeItemAtURL: destination];

		@throw [OFMoveItemFailedException
		    exceptionWithSourceURL: source
			    destinationURL: destination
				     errNo: [e errNo]];
	}

	@try {
		[self removeItemAtURL: source];
	} @catch (OFRemoveItemFailedException *e) {
		@throw [OFMoveItemFailedException
		    exceptionWithSourceURL: source
			    destinationURL: destination
				     errNo: [e errNo]];
	}

	objc_autoreleasePoolPop(pool);
}

- (void)removeItemAtURL: (OFURL *)URL
{
	OFURLHandler *URLHandler;

	if (URL == nil)
		@throw [OFInvalidArgumentException exception];

	if ((URLHandler = [OFURLHandler handlerForURL: URL]) == nil)
		@throw [OFUnsupportedProtocolException exceptionWithURL: URL];

	[URLHandler removeItemAtURL: URL];
}

- (void)removeItemAtPath: (OFString *)path
{
	void *pool = objc_autoreleasePoolPush();

	[self removeItemAtURL: [OFURL fileURLWithPath: path]];

	objc_autoreleasePoolPop(pool);
}

- (void)linkItemAtURL: (OFURL *)source
		toURL: (OFURL *)destination
{
	void *pool = objc_autoreleasePoolPush();
	OFURLHandler *URLHandler;

	if (source == nil || destination == nil)
		@throw [OFInvalidArgumentException exception];

	if (![[destination scheme] isEqual: [source scheme]])
		@throw [OFInvalidArgumentException exception];

	URLHandler = [OFURLHandler handlerForURL: source];

	if (URLHandler == nil)
		@throw [OFUnsupportedProtocolException
		    exceptionWithURL: source];

	[URLHandler linkItemAtURL: source
			    toURL: destination];

	objc_autoreleasePoolPop(pool);
}

#ifdef OF_FILE_MANAGER_SUPPORTS_LINKS
- (void)linkItemAtPath: (OFString *)source
		toPath: (OFString *)destination
{
	void *pool = objc_autoreleasePoolPush();

	[self linkItemAtURL: [OFURL fileURLWithPath: source]
		      toURL: [OFURL fileURLWithPath: destination]];

	objc_autoreleasePoolPop(pool);
}
#endif

- (void)createSymbolicLinkAtURL: (OFURL *)URL
	    withDestinationPath: (OFString *)target
{
	void *pool = objc_autoreleasePoolPush();
	OFURLHandler *URLHandler;

	if (URL == nil || target == nil)
		@throw [OFInvalidArgumentException exception];

	URLHandler = [OFURLHandler handlerForURL: URL];

	if (URLHandler == nil)
		@throw [OFUnsupportedProtocolException exceptionWithURL: URL];

	[URLHandler createSymbolicLinkAtURL: URL
			withDestinationPath: target];

	objc_autoreleasePoolPop(pool);
}

#ifdef OF_FILE_MANAGER_SUPPORTS_SYMLINKS
- (void)createSymbolicLinkAtPath: (OFString *)path
	     withDestinationPath: (OFString *)target
{
	void *pool = objc_autoreleasePoolPush();

	[self createSymbolicLinkAtURL: [OFURL fileURLWithPath: path]
		  withDestinationPath: target];

	objc_autoreleasePoolPop(pool);
}
#endif
@end

@implementation OFDictionary (FileAttributes)
- (uintmax_t)fileSize
{
	return [attributeForKeyOrException(self, of_file_attribute_key_size)
	    uIntMaxValue];
}

- (of_file_type_t)fileType
{
	return attributeForKeyOrException(self, of_file_attribute_key_type);
}

- (uint16_t)filePOSIXPermissions
{
	return [attributeForKeyOrException(self,
	    of_file_attribute_key_posix_permissions) uInt16Value];
}

- (uint32_t)filePOSIXUID
{
	return [attributeForKeyOrException(self,
	    of_file_attribute_key_posix_uid) uInt32Value];
}

- (uint32_t)filePOSIXGID
{
	return [attributeForKeyOrException(self,
	    of_file_attribute_key_posix_gid) uInt32Value];
}

- (OFString *)fileOwner
{
	return attributeForKeyOrException(self, of_file_attribute_key_owner);
}

- (OFString *)fileGroup
{
	return attributeForKeyOrException(self, of_file_attribute_key_group);
}

- (OFDate *)fileLastAccessDate
{
	return attributeForKeyOrException(self,
	    of_file_attribute_key_last_access_date);
}

- (OFDate *)fileModificationDate
{
	return attributeForKeyOrException(self,
	    of_file_attribute_key_modification_date);
}

- (OFDate *)fileStatusChangeDate
{
	return attributeForKeyOrException(self,
	    of_file_attribute_key_status_change_date);
}

- (OFString *)fileSymbolicLinkDestination
{
	return attributeForKeyOrException(self,
	    of_file_attribute_key_symbolic_link_destination);
}
@end

@implementation OFFileManager_default
- (instancetype)autorelease
{
	return self;
}

- (instancetype)retain
{
	return self;
}

- (void)release
{
}

- (unsigned int)retainCount
{
	return OF_RETAIN_COUNT_MAX;
}
@end