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[[CPRegularExpression]] is a wrapper around the POSIX [http://www.opengroup.org/onlinepubs/007908799/xsh/regex.h.html regex.h] library. | |||
== Example code == | |||
<source lang="objc"> | <source lang="objc"> | ||
NSString* test = [NSString stringWithContentsOfFile:@"TestFile.txt"]; | NSString* test = [NSString stringWithContentsOfFile:@"TestFile.txt"]; | ||
NSRange curRange = NSMakeRange(0, [test length]); | |||
CPRegularExpression* re = [CPRegularExpression regularExpressionWithString:@"([-_[:alpha:]]+)=['\"]?([^'\">[:blank:]]*)['\"]?"]; | CPRegularExpression* re = [CPRegularExpression regularExpressionWithString:@"([-_[:alpha:]]+)=['\"]?([^'\">[:blank:]]*)['\"]?"]; | ||
NSUInteger subexprCount = [re numberOfSubexpressions]; | NSUInteger subexprCount = [re numberOfSubexpressions]; | ||
NSRange subexprs[subexprCount]; | NSRange subexprs[subexprCount]; | ||
while (1) { | while (1) { | ||
NSRange newRange = [re matchedRangeForString:test range:curRange subexpressionRanges:subexprs count:subexprCount]; | NSRange newRange = [re matchedRangeForString:test range:curRange subexpressionRanges:subexprs count:subexprCount]; | ||
if (newRange.location == NSNotFound) | if (newRange.location == NSNotFound) { | ||
break; | break; | ||
else { | } else { | ||
NSLog(@"%@ -> %@", [test substringWithRange:subexprs[0]], [test substringWithRange:subexprs[1]]); | NSLog(@"%@ -> %@", [test substringWithRange:subexprs[0]], [test substringWithRange:subexprs[1]]); | ||
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</source> | </source> | ||
== | == External links == | ||
{{IPFHeader|AppSupport}} | |||
Latest revision as of 18:36, 26 October 2014
CPRegularExpression is a wrapper around the POSIX regex.h library.
Example code
NSString* test = [NSString stringWithContentsOfFile:@"TestFile.txt"];
NSRange curRange = NSMakeRange(0, [test length]);
CPRegularExpression* re = [CPRegularExpression regularExpressionWithString:@"([-_[:alpha:]]+)=['\"]?([^'\">[:blank:]]*)['\"]?"];
NSUInteger subexprCount = [re numberOfSubexpressions];
NSRange subexprs[subexprCount];
while (1) {
NSRange newRange = [re matchedRangeForString:test range:curRange subexpressionRanges:subexprs count:subexprCount];
if (newRange.location == NSNotFound) {
break;
} else {
NSLog(@"%@ -> %@", [test substringWithRange:subexprs[0]], [test substringWithRange:subexprs[1]]);
// Changing the range alone is buggy.
test = [test substringFromIndex:newRange.location + newRange.length];
curRange.length = [test length];
}
}
External links
- Header: http://github.com/kennytm/iphone-private-frameworks/blob/master/AppSupport/CPRegularExpression.h
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