Created
January 8, 2013 06:38
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A stupid Regex to extract Youtube id from the given list of youtube URLs in Objective-C
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// | |
// extract_youtube_id.m | |
// TestRegex | |
// | |
// Created by zdk on 1/8/2013 BE. | |
// Copyright (c) 2013 zdk. All rights reserved. | |
// | |
#import <Foundation/Foundation.h> | |
int main(int argc, const char * argv[]) | |
{ | |
@autoreleasepool { | |
//test list | |
NSArray *youtubeURLs = [NSArray arrayWithObjects: | |
@"http://youtu.be/NLqAF9hrVbY", | |
@"http://www.youtube.com/watch?feature=player_embedded&v=DJjDrajmbIQ", | |
@"http://www.youtube.com/watch?v=dQw4w9WgXcQ", | |
@"http://www.youtube.com/embed/NLqAF9hrVbY", | |
@"https://www.youtube.com/embed/NLqAF9hrVbY", | |
@"http://www.youtube.com/watch?v=NLqAF9hrVbY", | |
@"http://www.youtube.com/v/dQw4w9WgXcQ", | |
@"http://youtube.com/v/NLqAF9hrVbY?fs=1&hl=en_US", | |
@"http://www.youtube.com/v/NLqAF9hrVbY?fs=1&hl=en_US", | |
@"http://youtube.com/watch?v=NLqAF9hrVbY", | |
@"http://www.youtube.com/user/Scobleizer#p/u/1/1p3vcRhsYGo", | |
@"http://www.youtube.com/ytscreeningroom?v=NRHVzbJVx8I", | |
@"http://www.youtube.com/sandalsResorts#p/c/54B8C800269D7C1B/2/PPS-8DMrAn4", | |
@"http://gdata.youtube.com/feeds/api/videos/NLqAF9hrVbY", | |
@"http://www.youtube.com/watch?v=spDj54kf-vY&feature=g-vrec", | |
nil]; | |
//construct regex pettern | |
NSString *pattern = @"(?:(?:\.be\/|embed\/|v\/|\\?v=|\&v=|\/videos\/)|(?:[\\w+]+#\\w\/\\w(?:\/[\\w]+)?\/\\w\/))([\\w-_]+)"; | |
for (NSString *url in youtubeURLs) { | |
NSError *error = NULL; | |
NSRegularExpression *regex = [NSRegularExpression regularExpressionWithPattern: pattern | |
options: NSRegularExpressionCaseInsensitive | |
error: &error]; | |
NSTextCheckingResult *match = [regex firstMatchInString: url | |
options: 0 | |
range: NSMakeRange(0, [url length])]; | |
if ( match ) { | |
NSRange videoIDRange = [match rangeAtIndex:1]; | |
NSString *substringForFirstMatch = [url substringWithRange:videoIDRange]; | |
NSLog(@"url: %@, Youtube ID: %@", url, substringForFirstMatch); | |
} else { | |
NSLog(@"No string matched! %@", url); | |
} | |
} | |
} | |
return 0; | |
} |
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