ObjFW  Check-in [94ebfb3671]

#import "OFSeekableStream.h"
#import "OFKernelEventObserver.h"

#ifndef OF_AMIGAOS
# define OF_FILE_HANDLE_IS_FD
# define OF_INVALID_FILE_HANDLE (-1)
typedef int of_file_handle_t;
typedef int OFFileHandle;
#else
# define OF_INVALID_FILE_HANDLE NULL
typedef struct of_file_handle *of_file_handle_t;
typedef struct OFFileHandle *OFFileHandle;
#endif

OF_ASSUME_NONNULL_BEGIN

@class OFURL;

/**
 * @class OFFile OFFile.h ObjFW/OFFile.h
 *
 * @brief A class which provides methods to read and write files.
 */
OF_SUBCLASSING_RESTRICTED
@interface OFFile: OFSeekableStream
#ifdef OF_FILE_HANDLE_IS_FD
    <OFReadyForReadingObserving, OFReadyForWritingObserving>
#endif
{
	of_file_handle_t _handle;
	OFFileHandle _handle;
	bool _atEndOfStream;
}

/**
 * @brief Creates a new OFFile with the specified path and mode.
 *
 * @param path The path to the file to open as a string

 * @brief Creates a new OFFile with the specified native file handle.
 *
 * @param handle A native file handle. If OF_FILE_HANDLE_IS_FD is defined, this
 *		 is a file descriptor. The handle is closed when the OFFile
 *		 object is deallocated!
 * @return A new autoreleased OFFile
 */
+ (instancetype)fileWithHandle: (of_file_handle_t)handle;
+ (instancetype)fileWithHandle: (OFFileHandle)handle;

- (instancetype)init OF_UNAVAILABLE;

/**
 * @brief Initializes an already allocated OFFile.
 *
 * @param path The path to the file to open as a string

 * @brief Initializes an already allocated OFFile.
 *
 * @param handle A native file handle. If OF_FILE_HANDLE_IS_FD is defined, this
 *		 is a file descriptor. The handle is closed when the OFFile
 *		 object is deallocated!
 * @return An initialized OFFile
 */
- (instancetype)initWithHandle: (of_file_handle_t)handle
- (instancetype)initWithHandle: (OFFileHandle)handle OF_DESIGNATED_INITIALIZER;
    OF_DESIGNATED_INITIALIZER;
@end

OF_ASSUME_NONNULL_END

#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;
static struct OFFileHandle
	OFFileHandle previous, next;
	BPTR handle;
	bool append;
} *firstHandle = NULL;

static void
closeHandle(of_file_handle_t handle)
closeHandle(OFFileHandle 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;
	for (OFFileHandle iter = firstHandle; iter != NULL;
	    iter = iter->next)
		Close(iter->handle);
}
#endif

#ifndef OF_AMIGAOS
static int

}

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

+ (instancetype)fileWithHandle: (of_file_handle_t)handle
+ (instancetype)fileWithHandle: (OFFileHandle)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;
	OFFileHandle handle;

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

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

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

	objc_autoreleasePoolPop(pool);

	return self;
}

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

	_handle = handle;

	return self;
}