github.com/keybase/client/go@v0.0.0-20241007131713-f10651d043c8/updater/osx/Updater/NSDictionary+Extension.m (about)

     1  //
     2  //  NSDictionary+Extension.m
     3  //  Updater
     4  //
     5  //  Created by Gabriel on 4/19/16.
     6  //  Copyright © 2016 Keybase. All rights reserved.
     7  //
     8  
     9  #import "NSDictionary+Extension.h"
    10  
    11  @implementation NSDictionary (Extension)
    12  
    13  - (BOOL)kb_boolForKey:(id)key withDefault:(BOOL)defaultValue {
    14    id value = [self objectForKey:key];
    15    if (!value || [value isEqual:[NSNull null]]) return defaultValue;
    16    // It can be error prone to check is something is a BOOL object type (NSNumber with internal bool),
    17    // so we'll use boolValue.
    18    if (![value respondsToSelector:@selector(boolValue)]) return defaultValue;
    19    return [value boolValue];
    20  }
    21  
    22  - (BOOL)kb_boolForKey:(id)key {
    23    return [self kb_boolForKey:key withDefault:NO];
    24  }
    25  
    26  - (NSString *)kb_stringForKey:(id)key {
    27    id value = [self objectForKey:key];
    28    if (!value || [value isEqual:[NSNull null]]) return nil;
    29    if (![value isKindOfClass:[NSString class]]) return nil;
    30    return value;
    31  }
    32  
    33  - (NSArray<NSString *> *)kb_stringArrayForKey:(id)key {
    34    id value = [self objectForKey:key];
    35    if (!value || [value isEqual:[NSNull null]]) return nil;
    36    if (![value isKindOfClass:[NSArray class]]) return nil;
    37    for (id obj in value) {
    38      if (![obj isKindOfClass:NSString.class]) return nil;
    39    }
    40    return value;
    41  }
    42  
    43  @end