Re: how to get this type of regex matching happening (using AGRegex)?
Re: how to get this type of regex matching happening (using AGRegex)?
- Subject: Re: how to get this type of regex matching happening (using AGRegex)?
- From: Aram Greenman <email@hidden>
- Date: Sat, 20 Mar 2004 10:24:17 -0800
AGRegex *regex = [[AGRegex alloc] initWithPattern:@"anchor
((\\w)\\s*)*"];
example input text 1:
anchor a b c d
hoped for array from example text 1:
a
b
c
d
Each set of parentheses only remembers the last occurrence of the
subpattern. You'll probably have to use two regexes.
AGRegex *re1 = [AGRegex regexWithPattern:@"anchor (((\\w)\\s*)*)"];
NSString *s = [[re1 findInString:@"anchor a b c d"] groupAtIndex:1];
// s should now be "a b c d"
AGRegex *re2 = [AGRegex regexWithPattern:@"(\w)\\s*"];
NSArray *matches = [re2 findAllInString:s];
// matches is an array of AGRegexMatches
matches[0] = {"a ", "a"}
matches[1] = {"b ", "b"}
matches[2] = {"c ", "c"}
matches[3] = {"d", "d"}
I'm guessing this is probably a simplified example of what you really
want to do, but if it's not you can do this a lot easier with
NSScanner:
NSScanner *scanner = [NSScanner scannerWithString:@"anchor a b c d"];
NSString *match;
[scanner scanString:@"anchor " intoString:NULL];
while ([scanner scanCharactersFromSet:[NSCharacterSet
alphanumericCharacterSet] intoString:&match])
NSLog(match);
Aram
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