/*
 * Copyright (c) 2008
 *   Jonathan Schleifer <js@webkeks.org>
 *
 * All rights reserved.
 *
 * This file is part of libobjfw. It may be distributed under the terms of the
 * Q Public License 1.0, which can be found in the file LICENSE included in
 * the packaging of this file.
 */

#import <stdio.h>

#import "OFFile.h"
#import "OFExceptions.h"

@implementation OFFile
+ newWithPath: (const char*)path
      andMode: (const char*)mode
{
	return [[OFFile alloc] initWithPath: path
				    andMode: mode];
}

- initWithPath: (const char*)path
       andMode: (const char*)mode
{
	if ((self = [super init])) {
		if ((fp = fopen(path, mode)) == NULL) {
			[self free];
			return nil;
		}
	}
	return self;
}

- free
{
	fclose(fp);
	return [super free];
}

- (char*)readWithSize: (size_t)size
	    andNItems: (size_t)nitems
{
	uint64_t memsize;
	char *ret;
       
	if ((memsize = (uint64_t)nitems * size) > 0xFFFFFFFF) {
		[OFOverflowException newWithObject: self];
		return NULL;
	}
	
	ret = [self getMem: (size_t)memsize];

	if (fread(ret, size, nitems, fp) <= 0 && !feof(fp)) {
		[self freeMem: ret];
		[OFReadFailedException newWithObject: self
					     andSize: size
					   andNItems: nitems];
		return NULL;
	}

	return ret;
}
@end