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106 lines
3.6 KiB
Objective-C
106 lines
3.6 KiB
Objective-C
//
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// APLevelDB.h
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//
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// Created by Adam Preble on 1/23/12.
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// Copyright (c) 2012 Adam Preble. All rights reserved.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE.
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#import <Foundation/Foundation.h>
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extern NSString * const APLevelDBErrorDomain;
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@class APLevelDBIterator;
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@protocol APLevelDBWriteBatch;
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@interface APLevelDB : NSObject
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@property (nonatomic, readonly, strong) NSString *path;
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+ (APLevelDB *)levelDBWithPath:(NSString *)path error:(NSError *__autoreleasing*)errorOut;
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- (void)close;
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- (BOOL)setData:(NSData *)data forKey:(NSString *)key;
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- (BOOL)setString:(NSString *)str forKey:(NSString *)key;
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- (NSData *)dataForKey:(NSString *)key;
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- (NSString *)stringForKey:(NSString *)key;
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- (BOOL)removeKey:(NSString *)key;
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- (NSArray *)allKeys;
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- (void)enumerateKeys:(void (^)(NSString *key, BOOL *stop))block;
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- (void)enumerateKeysWithPrefix:(NSString *)prefix usingBlock:(void (^)(NSString *key, BOOL *stop))block;
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- (void)enumerateKeysAndValuesAsStrings:(void (^)(NSString *key, NSString *value, BOOL *stop))block;
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- (void)enumerateKeysWithPrefix:(NSString *)prefix asStrings:(void (^)(NSString *key, NSString *value, BOOL *stop))block;
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- (void)enumerateKeysAndValuesAsData:(void (^)(NSString *key, NSData *value, BOOL *stop))block;
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- (void)enumerateKeysWithPrefix:(NSString *)prefix asData:(void (^)(NSString *key, NSData *value, BOOL *stop))block;
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- (NSUInteger)approximateSizeFrom:(NSString *)from to:(NSString *)to;
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- (NSUInteger)exactSizeFrom:(NSString *)from to:(NSString *)to;
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// Objective-C Subscripting Support:
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// The database object supports subscripting for string-string and string-data key-value access and assignment.
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// Examples:
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// db[@"key"] = @"value";
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// db[@"key"] = [NSData data];
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// NSString *s = db[@"key"];
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// An NSInvalidArgumentException is raised if the key is not an NSString, or if the assigned object is not an
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// instance of NSString or NSData.
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- (id)objectForKeyedSubscript:(id)key;
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- (void)setObject:(id)object forKeyedSubscript:(id<NSCopying>)key;
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// Batch write/atomic update support:
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- (id<APLevelDBWriteBatch>)beginWriteBatch;
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@end
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@interface APLevelDBIterator : NSObject
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+ (id)iteratorWithLevelDB:(APLevelDB *)db;
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// Designated initializer:
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- (id)initWithLevelDB:(APLevelDB *)db;
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- (BOOL)seekToKey:(NSString *)key;
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- (NSString *)nextKey;
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- (NSString *)key;
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- (NSString *)valueAsString;
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- (NSData *)valueAsData;
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@end
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@protocol APLevelDBWriteBatch <NSObject>
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- (void)setData:(NSData *)data forKey:(NSString *)key;
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- (void)setString:(NSString *)str forKey:(NSString *)key;
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- (void)removeKey:(NSString *)key;
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// Remove all of the buffered sets and removes:
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- (void)clear;
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- (BOOL)commit;
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@end
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