macOS URL Validation Problem!

[saleh.hi.62]

hello guys,

i am trying to validate URL with this method:

- (BOOL) validateUrl: (NSString *) candidate {
	
	NSString *urlRegEx=
	@"((https?|ftp|gopher|telnet|file|notes|ms-help):((//)|(\\\\))+[\w\d:#@%/;$()~_?\+-=\\\.&]*)";
    
	NSPredicate *urlTest = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", urlRegEx]; 
    return [urlTest evaluateWithObject:candidate];
	
}

it does not function! i think problem is with Regular expression !

 

[jiminaus]

Because Objective-C doesn't have special syntax for writing regular expressions, but instead reuses the general string syntax, for every backslash in a regular expression you need to write two backslashes in the string.

You haven't done that, at least not in the character class at the end of the regex.

 

[saleh.hi.62]

Because Objective-C doesn't have special syntax for writing regular expressions, but instead reuses the general string syntax, for every backslash in a regular expression you need to write two backslashes in the string.

You haven't done that, at least not in the character class at the end of the regex.

((https?|ftp|gopher|telnet|file|notes|ms-help):((//)|(\\\\\\\\))+[\w\d:#@%/;$()~_?\\+-=\\\\\\.&]*)

i am using this now according to what you said, but still it does not work!

 

[jiminaus]

((https?|ftp|gopher|telnet|file|notes|ms-help):((//)|(\\\\\\\\))+[\w\d:#@%/;$()~_?\\+-=\\\\\\.&]*)

i am using this now according to what you said, but still it does not work!

And what about \w and \d? These need to be \\w and \\d.

BTW I haven't actually been through your regex to see if it's actually correct for not. I'd just noticed these "syntax" errors.

 

[saleh.hi.62]

And what about \w and \d? These need to be \\w and \\d.

BTW I haven't actually been through your regex to see if it's actually correct for not. I'd just noticed these "syntax" errors.

thank you my friend it already works