74 lines
3.1 KiB
Objective-C
74 lines
3.1 KiB
Objective-C
//
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// NSDictionary+QueryString.m
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// OneTimePassword
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//
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// Copyright (c) 2013 Matt Rubin
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy of
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// this software and associated documentation files (the "Software"), to deal in
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// the Software without restriction, including without limitation the rights to
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// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
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// the Software, and to permit persons to whom the Software is furnished to do so,
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// 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 all
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// 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, FITNESS
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// FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
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// COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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// IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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// CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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//
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#import "NSDictionary+QueryString.h"
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#import "NSString+PercentEncoding.h"
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// For alternate implementations, see:
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// https://github.com/Singly/iOS-SDK/blob/master/SinglySDK/SinglySDK/NSDictionary%2BQueryString.m
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// https://code.google.com/p/google-toolbox-for-mac/source/browse/trunk/Foundation/GTMNSDictionary%2BURLArguments.m
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@implementation NSDictionary (QueryString)
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// This method parses the arguments of a query string and returns a dictionary containing the
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// key-value pairs. All keys and values are returned as percent-decoded strings, and nested arguments
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// are not supported. Keys without arguments will not be included in the dictionary, and duplicate
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// keys will have their values overwritten.
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+ (instancetype)dictionaryWithQueryString:(NSString *)queryString
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{
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NSMutableDictionary *dictionary = [NSMutableDictionary dictionary];
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NSArray *pairs = [queryString componentsSeparatedByString:@"&"];
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for (NSString *pair in pairs) {
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NSArray *elements = [pair componentsSeparatedByString:@"="];
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if (elements.count == 2) {
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NSString *key = [elements[0] percentDecodedString];
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NSString *value = [elements[1] percentDecodedString];
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dictionary[key] = value;
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}
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}
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return dictionary;
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}
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// This method returns a simple query-string-style representation of the dictionary.
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// All keys and values are expected to be strings, and if they are not then this method will attempt
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// to serialize them using the -description method. Keys and values are percent-encoded before being
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// added to the query string.
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- (NSString *)queryString
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{
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NSMutableArray *keyValuePairs = [NSMutableArray arrayWithCapacity:self.count];
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for (id key in self) {
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id value = self[key];
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NSString *keyValueString = [NSString stringWithFormat:@"%@=%@", [[key description] percentEncodedString], [[value description] percentEncodedString]];
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[keyValuePairs addObject:keyValueString];
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}
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return [keyValuePairs componentsJoinedByString:@"&"];
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}
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@end
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