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Code Issues Releases Wiki Activity

Simplify betterComponentsSeparatedByCharactersInSet:

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This commit is contained in:
Mitchell Livingston 2013-03-07 23:55:31 +00:00
parent 6573789b66
commit 0323c7531a
2 changed files with 16 additions and 15 deletions
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2
macosx/NSStringAdditions.h
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@ -45,6 +45,6 @@
- (NSComparisonResult) compareNumeric: (NSString *) string; //simple compare method for strings with numbers (works for IP addresses)
- (NSArray *) betterComponentsSeparatedByCharactersInSet: (NSCharacterSet *) separator; //like betterComponentsSeparatedByCharactersInSet:, but excludes blank values
- (NSArray *) betterComponentsSeparatedByCharactersInSet: (NSCharacterSet *) separators; //like componentsSeparatedByCharactersInSet:, but excludes blank values
@end

29
macosx/NSStringAdditions.m
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@ -209,30 +209,31 @@
return [self compare: string options: comparisonOptions range: NSMakeRange(0, [self length]) locale: [NSLocale currentLocale]];
}
- (NSArray *) betterComponentsSeparatedByCharactersInSet: (NSCharacterSet *) separator
- (NSArray *) betterComponentsSeparatedByCharactersInSet: (NSCharacterSet *) separators
{
NSMutableArray * components = [NSMutableArray array];
NSUInteger i = 0;
while (i < [self length])
NSCharacterSet * includededCharSet = [separators invertedSet];
NSUInteger index = 0;
const NSUInteger fullLength = [self length];
do
{
const NSRange range = [self rangeOfCharacterFromSet: separator options: 0 range: NSMakeRange(i, [self length]-i)];
const NSUInteger start = [self rangeOfCharacterFromSet: includededCharSet options: 0 range: NSMakeRange(index, fullLength - index)].location;
if (start == NSNotFound)
break;
if (range.location == NSNotFound)
const NSRange endRange = [self rangeOfCharacterFromSet: separators options: 0 range: NSMakeRange(start, fullLength - start)];
if (endRange.location == NSNotFound)
{
[components addObject: [self substringFromIndex: i]];
[components addObject: [self substringFromIndex: start]];
break;
}
else if (range.location != i)
{
const NSUInteger length = range.location - i;
[components addObject: [self substringWithRange: NSMakeRange(i, length)]];
i += length;
}
i += range.length;
[components addObject: [self substringWithRange: NSMakeRange(start, endRange.location - start)]];
index = NSMaxRange(endRange);
}
while (YES);
return components;
}