ObjFW  Diff

 * 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 <assert.h>
#include <errno.h>

#ifdef HAVE_FCNTL_H
# include <fcntl.h>
#endif
#include "unistd_wrapper.h"

#ifndef O_EXLOCK
# define O_EXLOCK 0
#endif

#ifndef OF_AMIGAOS
# define closeHandle(h) close(h)
#else
static struct of_file_handle {
	of_file_handle_t previous, next;
	BPTR handle;
	bool append;
} *firstHandle = NULL;

static void
closeHandle(of_file_handle_t handle)
{
	Close(handle->handle);



	if (handle->previous != NULL)
		handle->previous->next = handle->next;
	if (handle->next != NULL)
		handle->next->previous = handle->previous;

	if (firstHandle == handle)
		firstHandle = handle->next;



	free(handle);
}

OF_DESTRUCTOR()
{
	for (of_file_handle_t iter = firstHandle; iter != NULL;
	    iter = iter->next)
		Close(iter->handle);
}
#endif

#ifndef OF_AMIGAOS
static int

#ifdef OF_NINTENDO_DS
	if (!nitroFSInit(NULL))
		@throw [OFInitializationFailedException
		    exceptionWithClass: self];
#endif
}

+ (instancetype)fileWithPath: (OFString *)path
			mode: (OFString *)mode
{
	return [[[self alloc] initWithPath: path
				      mode: mode] autorelease];
}

+ (instancetype)fileWithURL: (OFURL *)URL
		       mode: (OFString *)mode
{
	return [[[self alloc] initWithURL: URL
				     mode: mode] autorelease];
}

+ (instancetype)fileWithHandle: (of_file_handle_t)handle
{
	return [[[self alloc] initWithHandle: handle] autorelease];
}

- (instancetype)init
{
	OF_INVALID_INIT_METHOD
}

- (instancetype)initWithPath: (OFString *)path
			mode: (OFString *)mode
{
	of_file_handle_t handle;

	@try {
		void *pool = objc_autoreleasePoolPush();
		int flags;

#ifndef OF_AMIGAOS
		if ((flags = parseMode(mode.UTF8String)) == -1)

		if (handle == -1)
			@throw [OFOpenItemFailedException
			    exceptionWithPath: path
					 mode: mode
					errNo: errno];
#else
		handle = of_alloc(1, sizeof(*handle));
		@try {
			if ((flags = parseMode(mode.UTF8String,
			    &handle->append)) == -1)
				@throw [OFInvalidArgumentException exception];

			if ((handle->handle = Open([path cStringWithEncoding:
			    [OFLocale encoding]], flags)) == 0) {

					Close(handle->handle);
					@throw [OFOpenItemFailedException
					    exceptionWithPath: path
							 mode: mode
							errNo: EIO];
				}
			}



			handle->previous = NULL;
			handle->next = firstHandle;

			if (firstHandle != NULL)
				firstHandle->previous = handle;

			firstHandle = handle;


		} @catch (id e) {
			free(handle);
			@throw e;
		}
#endif

		objc_autoreleasePoolPop(pool);
	} @catch (id e) {
		[self release];
		@throw e;
	}

	@try {
		self = [self initWithHandle: handle];
	} @catch (id e) {
		closeHandle(handle);
		@throw e;
	}

	return self;
}

- (instancetype)initWithURL: (OFURL *)URL
		       mode: (OFString *)mode
{
	void *pool = objc_autoreleasePoolPush();
	OFString *fileSystemRepresentation;

	@try {
		fileSystemRepresentation = URL.fileSystemRepresentation;
	} @catch (id e) {
		[self release];
		@throw e;
	}

	self = [self initWithPath: fileSystemRepresentation
			     mode: mode];

	objc_autoreleasePoolPop(pool);

	return self;
}

- (instancetype)initWithHandle: (of_file_handle_t)handle
{
	self = [super init];

	_handle = handle;

	return self;
}

- (bool)lowlevelIsAtEndOfStream
{
	if (_handle == OF_INVALID_FILE_HANDLE)
		@throw [OFNotOpenException exceptionWithObject: self];

	return _atEndOfStream;
}

- (size_t)lowlevelReadIntoBuffer: (void *)buffer
			  length: (size_t)length
{
	ssize_t ret;

	if (_handle == OF_INVALID_FILE_HANDLE)
		@throw [OFNotOpenException exceptionWithObject: self];

#if defined(OF_WINDOWS)
	if (length > UINT_MAX)
		@throw [OFOutOfRangeException exception];

	if ((ret = read(_handle, buffer, (unsigned int)length)) < 0)

	if (ret == 0)
		_atEndOfStream = true;

	return ret;
}

- (size_t)lowlevelWriteBuffer: (const void *)buffer
		       length: (size_t)length
{
	if (_handle == OF_INVALID_FILE_HANDLE)
		@throw [OFNotOpenException exceptionWithObject: self];

#if defined(OF_WINDOWS)
	int bytesWritten;

	if (length > INT_MAX)
		@throw [OFOutOfRangeException exception];

						      bytesWritten: 0
							     errNo: errno];
#endif

	return (size_t)bytesWritten;
}

- (of_offset_t)lowlevelSeekToOffset: (of_offset_t)offset
			     whence: (int)whence
{
	of_offset_t ret;

	if (_handle == OF_INVALID_FILE_HANDLE)
		@throw [OFNotOpenException exceptionWithObject: self];

#ifndef OF_AMIGAOS
# if defined(OF_WINDOWS)
	ret = _lseeki64(_handle, offset, whence);
# elif defined(HAVE_LSEEK64)
	ret = lseek64(_handle, offset, whence);

{
	return _handle;
}
#endif

- (void)close
{
	if (_handle == OF_INVALID_FILE_HANDLE)
		@throw [OFNotOpenException exceptionWithObject: self];

	closeHandle(_handle);
	_handle = OF_INVALID_FILE_HANDLE;

	[super close];
}

- (void)dealloc
{
	if (_handle != OF_INVALID_FILE_HANDLE)
		[self close];

	[super dealloc];
}
@end