NSURL 扩展

NSURL+Extend.h

//
//  NSURL+Extend.h
//
//  Created by manjun.han on 13-4-17.
//

#import <Foundation/Foundation.h>

@interface NSURL (Extend)

+ (NSString *) encodeURLParams: (NSDictionary *)urlParamsDictionary;

+ (NSDictionary *) decodeURLParams: (NSString *)urlParamStr;

+ (NSURL *) buildURL: (NSString *)baseURL params: (NSDictionary *)urlParams;

+ (NSDictionary *) parseURLToDictionary:(NSURL *)url ;

+ (BOOL) isFullURL:(NSString *)url;

@end

NSURL+Extend.m

//
//  NSURL+Extend.m
//
//  Created by manjun.han on 13-4-17.
//

#import "NSURL+Extend.h"

@implementation NSURL (Extend)

+ (NSString *) encodeURLParams: (NSDictionary *)urlParamsDictionary
{
    NSMutableArray *paramList = [NSMutableArray array];
    
    for (NSString* key in urlParamsDictionary.keyEnumerator) {
        
        id value = [urlParamsDictionary valueForKey:key];
        
        id kvStr = [NSString stringWithFormat:@"%@=%@", key, [value stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]];
        
        [paramList addObject: kvStr];
    }
    
    return [paramList componentsJoinedByString:@"&"];
}

+ (NSDictionary *) decodeURLParams: (NSString *)urlParamStr
{
    NSMutableDictionary *paramDir = [[NSMutableDictionary alloc] init];
    
    NSArray *kvStrsList = [urlParamStr componentsSeparatedByString: @"&"];
    
    for (NSString *kvStr in kvStrsList) {
        
        NSArray *kv = [kvStr componentsSeparatedByString: @"="];
        
        [paramDir setObject:[[kv objectAtIndex:1] stringByReplacingPercentEscapesUsingEncoding:NSUTF8StringEncoding]
                   forKey:[kv objectAtIndex:0]];
    }
    
    return paramDir;
}

+ (NSURL *) buildURL: (NSString *)baseURL params: (NSDictionary *)urlParams
{
    if (!urlParams || urlParams.count == 0) {
        
        return [NSURL URLWithString:baseURL];
    }
    
    NSRange range = [baseURL rangeOfString:@"?"];
    
    NSString *joinChar = (range.location == NSNotFound)? @"?" : @"&";
    
    NSString *paramsStr = [self encodeURLParams:urlParams];
    
    // baseURL , 
    return [NSURL URLWithString:[NSString stringWithFormat:@"%@%@%@", baseURL, joinChar, paramsStr]];
}

+ (NSDictionary *) parseURLToDictionary:(NSURL *)url
{
    NSString *query = [url query];
    
    return [self decodeURLParams: query];
}

+ (BOOL) isFullURL:(NSString *)url
{
    
    if (url.length == 0 || [[url stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceCharacterSet]] length] == 0) {
        return NO;
    }
    
    url = [url stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceCharacterSet]];
    
    NSRange httpRange = [url rangeOfString:@"http:"];
    
    NSRange httpsRange = [url rangeOfString:@"https:"];
    
    if (httpRange.location == 0 || httpsRange.location == 0){
        return YES;
    }

    return NO;
}

@end