[21] | 1 | //
|
---|
| 2 | // NJRDateFormatter.m
|
---|
| 3 | // Pester
|
---|
| 4 | //
|
---|
| 5 | // Created by Nicholas Riley on Wed Oct 09 2002.
|
---|
| 6 | // Copyright (c) 2002 Nicholas Riley. All rights reserved.
|
---|
| 7 | //
|
---|
| 8 |
|
---|
| 9 | #import "NJRDateFormatter.h"
|
---|
| 10 |
|
---|
[43] | 11 | NSUserDefaults *locale;
|
---|
[21] | 12 |
|
---|
| 13 | @implementation NJRDateFormatter
|
---|
| 14 |
|
---|
[43] | 15 | + (void)initialize;
|
---|
| 16 | {
|
---|
| 17 | locale = [[NSUserDefaults standardUserDefaults] retain];
|
---|
| 18 | }
|
---|
| 19 |
|
---|
| 20 | + (NSString *)format:(NSString *)format withoutComponent:(unichar)component;
|
---|
| 21 | {
|
---|
| 22 | NSScanner *scanner = [NSScanner scannerWithString: format];
|
---|
[45] | 23 | int formatLength = [format length];
|
---|
[43] | 24 | NSRange range;
|
---|
| 25 | [scanner setCharactersToBeSkipped: [NSCharacterSet characterSetWithCharactersInString: @""]];
|
---|
[45] | 26 | // NSLog(@"format:withoutComponent: trying to excise %c from %@", component, format);
|
---|
[43] | 27 | while ([scanner scanUpToString: @"%" intoString: nil] || ![scanner isAtEnd]) {
|
---|
| 28 | range.location = [scanner scanLocation];
|
---|
[45] | 29 | // NSLog(@"location: %d/%d, remaining: %@%@", range.location, formatLength, [format substringFromIndex: range.location], [scanner isAtEnd] ? @", isAtEnd" : @"");
|
---|
| 30 | // XXX works fine without keeping track of length in 10.1.5; in 10.2, [scanner scanUptoString:intoString:] still returns YES even when scanner is at end and thereÕs nothing left to scan, and if you start accessing the string past the end... *boom*
|
---|
| 31 | if (range.location >= formatLength) break;
|
---|
[43] | 32 | [scanner scanUpToCharactersFromSet: [NSCharacterSet letterCharacterSet] intoString: nil];
|
---|
| 33 | if ([format characterAtIndex: [scanner scanLocation]] == component) {
|
---|
| 34 | if ([scanner scanUpToString: @"%" intoString: nil] && ![scanner isAtEnd]) {
|
---|
| 35 | NSMutableString *mutableFormat = [format mutableCopy];
|
---|
| 36 | if (range.location != 0 && [[NSCharacterSet punctuationCharacterSet] characterIsMember: [format characterAtIndex: range.location - 1]]) {
|
---|
| 37 | range.location--; // "%I:%M:%S%p" -> "%I:%M%p"
|
---|
| 38 | }
|
---|
| 39 | range.length = [scanner scanLocation] - range.location;
|
---|
| 40 | [mutableFormat deleteCharactersInRange: range];
|
---|
| 41 | format = [mutableFormat copy];
|
---|
| 42 | [mutableFormat release];
|
---|
| 43 | return [format autorelease];
|
---|
| 44 | } else {
|
---|
| 45 | range = [format rangeOfCharacterFromSet: [NSCharacterSet letterCharacterSet] options: NSBackwardsSearch range: NSMakeRange(0, range.location)];
|
---|
| 46 | return [format substringToIndex: NSMaxRange(range)];
|
---|
| 47 | }
|
---|
| 48 | }
|
---|
| 49 | }
|
---|
| 50 | return format;
|
---|
| 51 | }
|
---|
| 52 |
|
---|
| 53 | + (NSString *)localizedDateFormatIncludingWeekday:(BOOL)weekday;
|
---|
| 54 | {
|
---|
| 55 | NSString *format = [locale stringForKey: NSDateFormatString];
|
---|
| 56 | if (weekday) return format;
|
---|
| 57 | return [self format: format withoutComponent: (unichar)'A'];
|
---|
| 58 | }
|
---|
| 59 |
|
---|
| 60 | + (NSString *)localizedShortDateFormatIncludingWeekday:(BOOL)weekday;
|
---|
| 61 | {
|
---|
| 62 | NSString *format = [locale stringForKey: NSShortDateFormatString];
|
---|
| 63 | if (weekday) return format;
|
---|
| 64 | return [self format: format withoutComponent: (unichar)'A'];
|
---|
| 65 | }
|
---|
| 66 |
|
---|
| 67 | NSString *stringByInsertingStringAtLocation(NSString *string, NSString *insert, int location) {
|
---|
| 68 | return [NSString stringWithFormat: @"%@%@%@", [string substringToIndex: location], insert,
|
---|
| 69 | [string substringFromIndex: location]];
|
---|
| 70 | }
|
---|
| 71 |
|
---|
| 72 | + (NSString *)localizedTimeFormatIncludingSeconds:(BOOL)seconds;
|
---|
| 73 | {
|
---|
| 74 | NSString *format = [locale stringForKey: NSTimeFormatString];
|
---|
| 75 | NSArray *ampm = [locale arrayForKey: NSAMPMDesignation];
|
---|
| 76 | NSString *am = [ampm objectAtIndex: 0], *pm = [ampm objectAtIndex: 1];
|
---|
| 77 | // work around bug with inconsistent AM/PM and time format
|
---|
| 78 | if ([am isEqualToString: @""] && [pm isEqualToString: @""])
|
---|
| 79 | format = [self format: format withoutComponent: 'p'];
|
---|
| 80 | else {
|
---|
| 81 | NSRange ampmComponentRange = [format rangeOfString: @"%p"];
|
---|
| 82 | NSCharacterSet *whitespace = [NSCharacterSet whitespaceCharacterSet];
|
---|
| 83 | BOOL needSpaceInFormatString = ![whitespace characterIsMember: [am characterAtIndex: 0]];
|
---|
| 84 | if (ampmComponentRange.location == NSNotFound) // "%1I:%M:%S" -> "%1I:%M:%S%p", "%1I:%M:%S %p"
|
---|
| 85 | format = [format stringByAppendingString: (needSpaceInFormatString ? @" %p" : @"%p")];
|
---|
| 86 | else {
|
---|
| 87 | NSRange whitespaceRange = [format rangeOfCharacterFromSet: whitespace options: NSBackwardsSearch range: NSMakeRange(0, ampmComponentRange.location)];
|
---|
| 88 | if (whitespaceRange.location == NSNotFound) {
|
---|
| 89 | if (needSpaceInFormatString) // "%1I:%M:%S%p" -> "%1I:%M:%S %p"
|
---|
| 90 | format = stringByInsertingStringAtLocation(format, @" ", ampmComponentRange.location);
|
---|
| 91 | // else "%1I:%M:%S%p" -> no change
|
---|
| 92 | } else {
|
---|
| 93 | if (NSMaxRange(whitespaceRange) == ampmComponentRange.location) {
|
---|
| 94 | if (!needSpaceInFormatString) // "%1I:%M:%S %p" -> "%1I:%M:%S%p"
|
---|
| 95 | format = [[format substringToIndex: whitespaceRange.location] stringByAppendingString: [format substringFromIndex: ampmComponentRange.location]];
|
---|
| 96 | // else "%1I:%M:%S %p" -> no change
|
---|
| 97 | } else {
|
---|
| 98 | if (needSpaceInFormatString)
|
---|
| 99 | format = stringByInsertingStringAtLocation(format, @" ", ampmComponentRange.location);
|
---|
| 100 | // else "%1I %M:%S%p" -> no change
|
---|
| 101 | }
|
---|
| 102 | }
|
---|
| 103 | }
|
---|
| 104 | }
|
---|
| 105 | if (seconds) return format;
|
---|
| 106 | return [self format: format withoutComponent: 'S'];
|
---|
| 107 | }
|
---|
| 108 |
|
---|
[21] | 109 | // workaround for bug in Jaguar (and earlier?) NSCalendarDate dateWithNaturalLanguageString:
|
---|
| 110 | NSString * stringByRemovingSurroundingWhitespace(NSString *string) {
|
---|
| 111 | static NSCharacterSet *nonWhitespace = nil;
|
---|
| 112 | NSRange firstValidCharacter, lastValidCharacter;
|
---|
| 113 |
|
---|
| 114 | if (!nonWhitespace) {
|
---|
| 115 | nonWhitespace = [[[NSCharacterSet characterSetWithCharactersInString:
|
---|
| 116 | @" \t\r\n"] invertedSet] retain];
|
---|
| 117 | }
|
---|
| 118 |
|
---|
| 119 | firstValidCharacter = [string rangeOfCharacterFromSet:nonWhitespace];
|
---|
| 120 | if (firstValidCharacter.length == 0)
|
---|
| 121 | return @"";
|
---|
[43] | 122 | lastValidCharacter = [string rangeOfCharacterFromSet:nonWhitespace options: NSBackwardsSearch];
|
---|
[21] | 123 |
|
---|
| 124 | if (firstValidCharacter.location == 0 && lastValidCharacter.location == [string length] - 1)
|
---|
| 125 | return string;
|
---|
| 126 | else
|
---|
[43] | 127 | return [string substringWithRange: NSUnionRange(firstValidCharacter, lastValidCharacter)];
|
---|
[21] | 128 | }
|
---|
| 129 |
|
---|
[43] | 130 | - (id)initWithDateFormat:(NSString *)format allowNaturalLanguage:(BOOL)flag;
|
---|
| 131 | {
|
---|
| 132 | if ( (self = [super initWithDateFormat: format allowNaturalLanguage: flag]) != nil) {
|
---|
| 133 | NSRange ampmRange = [format rangeOfString: @"%p"];
|
---|
| 134 | NSArray *ampm = [locale arrayForKey: NSAMPMDesignation];
|
---|
| 135 | NSString *am = [ampm objectAtIndex: 0], *pm = [ampm objectAtIndex: 1];
|
---|
| 136 | if (flag && ampmRange.location != NSNotFound &&
|
---|
| 137 | [[locale stringForKey: NSTimeFormatString] rangeOfString: @"%p"].location == NSNotFound && ![am isEqualToString: pm]) {
|
---|
| 138 | // workaround for bug in NSCalendarDate dateWithNaturalLanguageString: discarding AM/PM value when AM/PM designations have spaces in them (of which the use thereof is a workaround for NSDateFormatter discarding the AM/PM value)
|
---|
| 139 | NSMutableString *paddedFormat = [format mutableCopy];
|
---|
| 140 | [paddedFormat replaceCharactersInRange: ampmRange withString: @" %p"];
|
---|
| 141 | alteredLocale = [[locale dictionaryRepresentation] mutableCopy];
|
---|
| 142 | [(NSMutableDictionary *)alteredLocale setObject: paddedFormat forKey: NSTimeFormatString];
|
---|
| 143 | [(NSMutableDictionary *)alteredLocale setObject:
|
---|
| 144 | [NSArray arrayWithObjects: stringByRemovingSurroundingWhitespace(am),
|
---|
[49] | 145 | stringByRemovingSurroundingWhitespace(pm), nil]
|
---|
| 146 | forKey: NSAMPMDesignation];
|
---|
[43] | 147 | [paddedFormat release];
|
---|
| 148 | } else {
|
---|
| 149 | alteredLocale = [(NSDictionary *)locale retain];
|
---|
| 150 | }
|
---|
| 151 | }
|
---|
| 152 | return self;
|
---|
| 153 | }
|
---|
[21] | 154 |
|
---|
[43] | 155 | - (void)dealloc;
|
---|
| 156 | {
|
---|
| 157 | [alteredLocale release];
|
---|
| 158 | [super dealloc];
|
---|
| 159 | }
|
---|
| 160 |
|
---|
[21] | 161 | - (BOOL)getObjectValue:(id *)anObject forString:(NSString *)string errorDescription:(NSString **)error
|
---|
| 162 | {
|
---|
| 163 | NSCalendarDate *date;
|
---|
| 164 | if (![self allowsNaturalLanguage])
|
---|
| 165 | return [super getObjectValue: anObject forString: string errorDescription: error];
|
---|
| 166 | if (string == nil) return nil;
|
---|
| 167 | NS_DURING // dateWithNaturalLanguageString: can throw an exception
|
---|
[43] | 168 | date = [NSCalendarDate dateWithNaturalLanguageString: stringByRemovingSurroundingWhitespace(string) locale: alteredLocale];
|
---|
| 169 | // NSLog(@"%@: natural language date is %@", string, date);
|
---|
[21] | 170 | NS_HANDLER
|
---|
| 171 | if (error != nil) *error = [localException reason];
|
---|
| 172 | NS_VALUERETURN(NO, BOOL);
|
---|
| 173 | NS_ENDHANDLER
|
---|
[43] | 174 | // [super getObjectValue: anObject forString: string errorDescription: error];
|
---|
| 175 | // NSLog(@"%@: formatter date is %@", string, anObject == nil ? @"(null)" : *anObject);
|
---|
[21] | 176 | if (date == nil) return [super getObjectValue: anObject forString: string errorDescription: error];
|
---|
| 177 | *anObject = date;
|
---|
| 178 | return YES;
|
---|
| 179 | }
|
---|
| 180 |
|
---|
| 181 | @end
|
---|