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基于线程安全的 plist 文件管理类

警告如果需要修改代码,一定注意dispatch_semaphore_signal(signal);dispatch_semaphore_wait(signal, overTime);需要平衡。dispatch_semaphore_t GCD 线程锁的知识暂不在这里讨论,有兴趣的朋友网上了解或者Q加2542700177。

调用方式

[[JPlistManager new] nativeConfigOperate:^NSArray<NSString *> *{
    //设置 plist 文件路径
    /**
    返回路径
    如:
    A:{
        B:{
            key:value
        }
    }
    则返回@[@"A",@"B",@"key"]
    */
    
    return @[@"BaseConfig",@"key"];
} handle:^void(NSMutableDictionary *valueLastDic, id value) {
    NSLog(@"返回结果 dic==%@, value==%@",valueLastDic,value);
    if (valueLastDic != nil && value == nil) {
    NSLog(@"最后一个 key 不存在");
}
//如果路径不对:
-  A:在最后一个路径之前就已经有路径不存在,那么返回valueLastDic,value两个参数都是 nil,并且最后writeToFile 依然是之前已经存在的 plist 文件,plist 文件不会改变。
- B:如果是之前的路径没有问题,路径都是存在的,只是最后一个路径不存在,那么返回的valueLastDic为查询路径的上一个dic,那工程里面的 InfoConfig.plist 举例如:@[@"c"],那么valueLastDic就是整个plist字典,如果:@[@"BaseConfig",@"aa"],那么valueLastDic就是路径 BaseConfig 下的字典。 增删改这些字典最后writeToFile是操作过的数据。
返回值 block:调用这个闭包用来执行writeToFile存储更新到本地,如果这是查询不需要更新本地,可以不执行这个block。
//查询的值所在的字典为空,路径不对
[valueLastDic setValue:@"--E_key-" forKey:@"E_key"];
[valueLastDic setValue:@"--E_key-" forKey:@"a_key"];
[valueLastDic removeObjectForKey:@"key"];
if (valueLastDic != nil) {//查询到值不为空

}else{//否则不是查询操作或者键值对不存在为空,或者路径不对

}
}]();

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