| 1 | //
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| 2 | // NJRDateFormatter.m
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| 3 | // Pester
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| 4 | //
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| 5 | // Created by Nicholas Riley on Wed Oct 09 2002.
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| 6 | // Copyright (c) 2002 Nicholas Riley. All rights reserved.
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| 7 | //
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| 8 |
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| 9 | #import "NJRDateFormatter.h"
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| 10 |
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| 11 |
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| 12 | @implementation NJRDateFormatter
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| 13 |
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| 14 | // workaround for bug in Jaguar (and earlier?) NSCalendarDate dateWithNaturalLanguageString:
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| 15 | NSString * stringByRemovingSurroundingWhitespace(NSString *string) {
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| 16 | static NSCharacterSet *nonWhitespace = nil;
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| 17 | NSRange firstValidCharacter, lastValidCharacter;
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| 18 |
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| 19 | if (!nonWhitespace) {
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| 20 | nonWhitespace = [[[NSCharacterSet characterSetWithCharactersInString:
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| 21 | @" \t\r\n"] invertedSet] retain];
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| 22 | }
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| 23 |
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| 24 | firstValidCharacter = [string rangeOfCharacterFromSet:nonWhitespace];
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| 25 | if (firstValidCharacter.length == 0)
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| 26 | return @"";
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| 27 | lastValidCharacter = [string rangeOfCharacterFromSet:nonWhitespace options:NSBackwardsSearch];
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| 28 |
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| 29 | if (firstValidCharacter.location == 0 && lastValidCharacter.location == [string length] - 1)
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| 30 | return string;
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| 31 | else
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| 32 | return [string substringWithRange:NSUnionRange(firstValidCharacter, lastValidCharacter)];
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| 33 | }
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| 34 |
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| 35 |
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| 36 | - (BOOL)getObjectValue:(id *)anObject forString:(NSString *)string errorDescription:(NSString **)error
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| 37 | {
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| 38 | NSCalendarDate *date;
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| 39 | if (![self allowsNaturalLanguage])
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| 40 | return [super getObjectValue: anObject forString: string errorDescription: error];
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| 41 | if (string == nil) return nil;
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| 42 | NS_DURING // dateWithNaturalLanguageString: can throw an exception
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| 43 | date = [NSCalendarDate dateWithNaturalLanguageString: stringByRemovingSurroundingWhitespace(string)];
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| 44 | NS_HANDLER
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| 45 | if (error != nil) *error = [localException reason];
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| 46 | NS_VALUERETURN(NO, BOOL);
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| 47 | NS_ENDHANDLER
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| 48 | if (date == nil) return [super getObjectValue: anObject forString: string errorDescription: error];
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| 49 | *anObject = date;
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| 50 | return YES;
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| 51 | }
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| 52 |
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| 53 | @end
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