//

// NSDictionary+QueryString.h

// LROAuth2Client

//

// Created by Luke Redpath on 14/05/2010.

// Copyright 2010 LJR Software Limited. All rights reserved.

//

#import "NSDictionary+QueryString.h"

#import "NSString+QueryString.h"

@implementation NSDictionary (QueryString)

+ (NSDictionary *)dictionaryWithFormEncodedString:(NSString *)encodedString

{

NSMutableDictionary* result = [NSMutableDictionary dictionary];

NSArray* pairs = [encodedString componentsSeparatedByString:@"&"];

for (NSString* kvp in pairs)

{

if ([kvp length] == 0)

continue;

NSRange pos = [kvp rangeOfString:@"="];

NSString *key;

NSString *val;

if (pos.location == NSNotFound)

{

key = [kvp stringByUnescapingFromURLQuery];

val = @"";

}

else

{

key = [[kvp substringToIndex:pos.location] stringByUnescapingFromURLQuery];

val = [[kvp substringFromIndex:pos.location + pos.length] stringByUnescapingFromURLQuery];

}

if (!key || !val)

continue; // I'm sure this will bite my arse one day

[result setObject:val forKey:key];

}

return result;

}

- (NSString *)stringWithFormEncodedComponents

{

NSMutableArray* arguments = [NSMutableArray arrayWithCapacity:[self count]];

for (NSString* key in self)

{

[arguments addObject:[NSString stringWithFormat:@"%@=%@",

[key stringByEscapingForURLQuery],

[[[self objectForKey:key] description] stringByEscapingForURLQuery]]];

}

return [arguments componentsJoinedByString:@"&"];

}

@end