Ottoman: bindings/Cocoa/MYVersionDictionary.mm@f2cd752db494 (annotated)

jens@6	1	//
jens@6	2	// MYVersionDictionary.m
jens@6	3	// Ottoman
jens@6	4	//
jens@6	5	// Created by Jens Alfke on 9/21/09.
jens@6	6	// Copyright 2009 Jens Alfke. All rights reserved.
jens@6	7	//
jens@6	8
jens@6	9	#import "MYVersionDictionary.h"
jens@6	10	#import "MYOttoman_internal.h"
jens@6	11	#import <Foundation/Foundation.h>
jens@6	12
jens@6	13	#include "VersionDictionary.h"
jens@6	14
jens@6	15	using namespace Mooseyard;
jens@6	16
jens@6	17
jens@6	18	@interface MYDictionaryEnumerator : NSEnumerator
jens@6	19	{
jens@6	20	Dictionary::Iterator *_iter;
jens@6	21	BOOL _started;
jens@6	22	}
jens@6	23	- (id) initWithDict: (const Dictionary*)dict;
jens@6	24	@end
jens@6	25
jens@6	26
jens@6	27
jens@6	28	static id BlobToNSData (const Blob &blob, bool copy =true) {
jens@6	29	if (!blob)
jens@6	30	return nil;
jens@6	31	else if (copy)
jens@6	32	return [NSData dataWithBytes: blob.bytes length: blob.length];
jens@6	33	else
jens@6	34	return [NSData dataWithBytesNoCopy: (void*)blob.bytes
jens@6	35	length: blob.length
jens@6	36	freeWhenDone: NO];
jens@6	37	}
jens@6	38
jens@6	39	static Blob BlobFromId (id object) {
jens@6	40	if ([object isKindOfClass: [NSData class]])
jens@6	41	return Blob([object bytes], [object length]);
jens@6	42	else
jens@6	43	return Key();
jens@6	44	}
jens@6	45
jens@6	46
jens@6	47
jens@6	48	@implementation MYVersionDictionary
jens@6	49
jens@6	50
jens@6	51	- (id) _initWithVersionDictionary: (VersionDictionary*)dict
jens@6	52	{
jens@6	53	self = [super init];
jens@6	54	if (self != nil) {
jens@6	55	if (!dict) {
jens@6	56	[self release];
jens@6	57	return nil;
jens@6	58	}
jens@6	59	_dict = dict;
jens@6	60	}
jens@6	61	return self;
jens@6	62	}
jens@6	63
jens@6	64
jens@6	65	- (NSUInteger)count {
jens@6	66	return _dict->count();
jens@6	67	}
jens@6	68
jens@6	69	- (id)objectForKey:(id)keyObject {
jens@6	70	return BlobToNSData( _dict->get( Key(BlobFromId(keyObject)) ) );
jens@6	71	}
jens@6	72
jens@6	73	- (NSEnumerator *)keyEnumerator {
jens@6	74	return [[[MYDictionaryEnumerator alloc] initWithDict: _dict] autorelease];
jens@6	75	}
jens@6	76
jens@6	77	- (int) generation {
jens@6	78	return _dict->generation();
jens@6	79	}
jens@6	80
jens@6	81	- (NSDate*) dateCreated {
jens@6	82	return [NSDate dateWithTimeIntervalSince1970: _dict->timestamp()];
jens@6	83	}
jens@6	84
jens@6	85	- (BOOL) isLatestVersion {
jens@6	86	return _dict->isLatestVersion();
jens@6	87	}
jens@6	88
jens@6	89	- (MYVersionDictionary*) previousVersion {
jens@6	90	const VersionDictionary *prev = _dict->previousVersion();
jens@6	91	if (prev)
jens@6	92	return [[[MYVersionDictionary alloc] _initWithVersionDictionary: prev] autorelease];
jens@6	93	else
jens@6	94	return nil;
jens@6	95	}
jens@6	96
jens@6	97	@end
jens@6	98
jens@6	99
jens@6	100
jens@6	101
jens@6	102	@implementation MYCurrentVersionDictionary
jens@6	103
jens@6	104
jens@6	105	- (id) _initWithOverlayDictionary: (OverlayDictionary*)dict
jens@6	106	{
jens@6	107	self = [super init];
jens@6	108	if (self != nil) {
jens@6	109	if (!dict) {
jens@6	110	[self release];
jens@6	111	return nil;
jens@6	112	}
jens@6	113	_dict = dict;
jens@6	114	}
jens@6	115	return self;
jens@6	116	}
jens@6	117
jens@6	118
jens@6	119	- (NSUInteger)count {
jens@6	120	return _dict->count();
jens@6	121	}
jens@6	122
jens@6	123	- (id)objectForKey:(id)keyObject {
jens@6	124	Blob keyBlob = BlobFromId(keyObject);
jens@6	125	return keyBlob ? BlobToNSData( _dict->get( Key(keyBlob) ) ) :nil;
jens@6	126	}
jens@6	127
jens@6	128	- (NSEnumerator *)keyEnumerator {
jens@6	129	return [[[MYDictionaryEnumerator alloc] initWithDict: _dict] autorelease];
jens@6	130	}
jens@6	131
jens@6	132	- (void)setObject:(id)anObject forKey:(id)aKey {
jens@6	133	Key key = Key(BlobFromId(aKey));
jens@6	134	NSAssert1(key, @"Invalid %@ key; only NSData supported", [aKey class]);
jens@6	135	Blob value = BlobFromId(anObject);
jens@6	136	NSAssert1(key, @"Invalid %@ value; only NSData supported", [aKey class]);
jens@6	137	_dict->put(key, value);
jens@6	138	}
jens@6	139
jens@6	140	- (void)removeObjectForKey:(id)aKey {
jens@6	141	Key key = Key(BlobFromId(aKey));
jens@6	142	NSAssert1(key, @"Invalid key class %@; only NSData supported", [aKey class]);
jens@6	143	_dict->remove(key);
jens@6	144	}
jens@6	145
jens@6	146	@end
jens@6	147
jens@6	148
jens@6	149
jens@6	150
jens@6	151	@implementation MYDictionaryEnumerator
jens@6	152
jens@6	153	- (id) initWithDict: (Dictionary*)dict
jens@6	154	{
jens@6	155	self = [super init];
jens@6	156	if (self != nil) {
jens@6	157	_iter = dict->iterate();
jens@6	158	}
jens@6	159	return self;
jens@6	160	}
jens@6	161
jens@6	162	- (void) dealloc
jens@6	163	{
jens@6	164	delete _iter;
jens@6	165	[super dealloc];
jens@6	166	}
jens@6	167
jens@6	168	- (void) finalize {
jens@6	169	delete _iter;
jens@6	170	[super finalize];
jens@6	171	}
jens@6	172
jens@6	173	- (id)nextObject {
jens@6	174	if (_started) {
jens@6	175	if (!_iter->next())
jens@6	176	return nil;
jens@6	177	} else {
jens@6	178	if (!_iter->hasValue())
jens@6	179	return nil;
jens@6	180	_started = YES;
jens@6	181	}
jens@6	182	Key key = _iter->key();
jens@6	183	return [NSData dataWithBytes: key.bytes length: key.length];
jens@6	184	}
jens@6	185
jens@6	186
jens@6	187	@end

author	Jens Alfke <jens@mooseyard.com>
	Thu Sep 24 21:47:06 2009 -0700 (2009-09-24)
changeset 6	f2cd752db494
permissions	-rw-r--r--