DiskUUIDEntry.m

//
//  DiskUUIDEntry.m
//  Notation
//
//  Created by Zachary Schneirov on 1/17/11.

/*Copyright (c) 2010, Zachary Schneirov. All rights reserved.
    This file is part of Notational Velocity.

    Notational Velocity is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    Notational Velocity 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 for more details.

    You should have received a copy of the GNU General Public License
    along with Notational Velocity.  If not, see <http://www.gnu.org/licenses/>. */


#import "DiskUUIDEntry.h"


@implementation DiskUUIDEntry

- (id)initWithUUIDRef:(CFUUIDRef)aUUIDRef {
	if ([super init]) {
		NSAssert(aUUIDRef != nil, @"need a real UUID");
		uuidRef = CFRetain(aUUIDRef);
		lastAccessed = [[NSDate date] retain];
	}
	return self;
}

- (void)dealloc {

	[lastAccessed release];
	CFRelease(uuidRef);
	[super dealloc];
}
- (void)encodeWithCoder:(NSCoder *)coder {
	NSAssert([coder allowsKeyedCoding], @"keyed-encoding only!");
	
	[coder encodeObject:lastAccessed forKey:VAR_STR(lastAccessed)];
	
	CFUUIDBytes bytes = CFUUIDGetUUIDBytes(uuidRef);
	[coder encodeBytes:(const uint8_t *)&bytes length:sizeof(CFUUIDBytes) forKey:VAR_STR(uuidRef)];

}
- (id)initWithCoder:(NSCoder*)decoder {
	NSAssert([decoder allowsKeyedCoding], @"keyed-decoding only!");
	
    if ([super init]) {

		lastAccessed = [[decoder decodeObjectForKey:VAR_STR(lastAccessed)] retain];
		
		NSUInteger decodedByteCount = 0;
		const uint8_t *bytes = [decoder decodeBytesForKey:VAR_STR(uuidRef) returnedLength:&decodedByteCount];
		if (bytes && decodedByteCount)  {
			uuidRef = CFUUIDCreateFromUUIDBytes(NULL, *(CFUUIDBytes*)bytes);
		}
		
		if (!uuidRef) return nil;
	}
	return self;
}

- (void)see {
	[lastAccessed release];
	lastAccessed = [[NSDate date] retain];
}

- (CFUUIDRef)uuidRef {
	return uuidRef;
}

- (NSDate*)lastAccessed {
	return lastAccessed;
}

- (NSString*)description {
	return [NSString stringWithFormat:@"DiskUUIDEntry(%@, %@)", lastAccessed, [(id)CFUUIDCreateString(NULL, uuidRef) autorelease]];
}

- (NSUInteger)hash {
	return CFHash(uuidRef);
}
- (BOOL)isEqual:(id)otherEntry {
	return CFEqual(uuidRef, [otherEntry uuidRef]);
}

@end