[21] | 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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[360] | 11 | // generated by perl -MExtUtils::Embed -e xsinit -- -o perlxsi.c
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| 12 | #include <EXTERN.h>
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| 13 | #include <perl.h>
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[21] | 14 |
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[360] | 15 | EXTERN_C void xs_init (pTHX);
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[21] | 16 |
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[360] | 17 | EXTERN_C void boot_DynaLoader (pTHX_ CV* cv);
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[43] | 18 |
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[360] | 19 | EXTERN_C void
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| 20 | xs_init(pTHX)
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[43] | 21 | {
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[360] | 22 | char *file = __FILE__;
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| 23 | dXSUB_SYS;
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| 24 |
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| 25 | /* DynaLoader is a special case */
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| 26 | newXS("DynaLoader::boot_DynaLoader", boot_DynaLoader, file);
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[43] | 27 | }
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[360] | 28 | // end generated code
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[43] | 29 |
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[360] | 30 | static PerlInterpreter *my_perl;
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| 31 | static NSDateFormatter *dateManipFormatter;
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[43] | 32 |
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[360] | 33 | static NSDate *parse_natural_language_date(NSString *input) {
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| 34 | if (my_perl == NULL) return nil;
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| 35 |
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| 36 | if ([input rangeOfString: @"|"].length > 0) {
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| 37 | NSMutableString *sanitized = [[input mutableCopy] autorelease];
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| 38 | [sanitized replaceOccurrencesOfString: @"|" withString: @""
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| 39 | options: NSLiteralSearch
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| 40 | range: NSMakeRange(0, [sanitized length])];
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| 41 | input = sanitized;
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| 42 | }
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| 43 |
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| 44 | NSString *temp = [[NSString alloc] initWithFormat: @"UnixDate(q|%@|, '%%q')", input];
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[361] | 45 | // NSLog(@"%@", temp);
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[360] | 46 | SV *d = eval_pv([temp UTF8String], TRUE);
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| 47 | [temp release];
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| 48 | if (d == NULL) return nil;
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| 49 |
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| 50 | STRLEN s_len;
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| 51 | char *s = SvPV(d, s_len);
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| 52 | if (s == NULL || s_len == 0) return nil;
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| 53 |
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| 54 | NSDate *date = [dateManipFormatter dateFromString: [NSString stringWithUTF8String: s]];
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[361] | 55 | // NSLog(@"%@", date);
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[360] | 56 |
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| 57 | return date;
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[43] | 58 | }
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| 59 |
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[360] | 60 | static void init_perl(void) {
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| 61 | const char *argv[] = {"", "-CSD", "-I", "", "-MDate::Manip", "-e", "0"};
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| 62 | argv[3] = [[[NSBundle mainBundle] resourcePath] fileSystemRepresentation];
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| 63 | PERL_SYS_INIT(0, NULL);
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| 64 | my_perl = perl_alloc();
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| 65 | if (my_perl == NULL) return;
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| 66 |
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| 67 | perl_construct(my_perl);
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| 68 | if (perl_parse(my_perl, xs_init, 7, (char **)argv, NULL) != 0) goto fail;
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| 69 |
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| 70 | PL_exit_flags |= PERL_EXIT_DESTRUCT_END;
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| 71 | if (perl_run(my_perl) != 0) goto fail;
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| 72 |
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| 73 | // XXX detect localization changes
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| 74 | eval_pv("Date_Init(\"Language=English\", \"DateFormat=non-US\", \"Internal=1\"", TRUE);
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[43] | 75 |
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[360] | 76 | if (parse_natural_language_date(@"tomorrow") == nil) goto fail;
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| 77 |
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| 78 | return;
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| 79 |
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| 80 | fail:
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| 81 | perl_destruct(my_perl);
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| 82 | perl_free(my_perl);
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| 83 | PERL_SYS_TERM();
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| 84 | my_perl = NULL;
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[43] | 85 | }
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| 86 |
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[21] | 87 | // workaround for bug in Jaguar (and earlier?) NSCalendarDate dateWithNaturalLanguageString:
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[360] | 88 | NSString *stringByRemovingSurroundingWhitespace(NSString *string) {
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[21] | 89 | static NSCharacterSet *nonWhitespace = nil;
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| 90 | NSRange firstValidCharacter, lastValidCharacter;
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[360] | 91 |
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[21] | 92 | if (!nonWhitespace) {
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| 93 | nonWhitespace = [[[NSCharacterSet characterSetWithCharactersInString:
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[360] | 94 | @" \t\r\n"] invertedSet] retain];
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[21] | 95 | }
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[360] | 96 |
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[21] | 97 | firstValidCharacter = [string rangeOfCharacterFromSet:nonWhitespace];
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| 98 | if (firstValidCharacter.length == 0)
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| 99 | return @"";
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[43] | 100 | lastValidCharacter = [string rangeOfCharacterFromSet:nonWhitespace options: NSBackwardsSearch];
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[360] | 101 |
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[21] | 102 | if (firstValidCharacter.location == 0 && lastValidCharacter.location == [string length] - 1)
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| 103 | return string;
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| 104 | else
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[43] | 105 | return [string substringWithRange: NSUnionRange(firstValidCharacter, lastValidCharacter)];
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[21] | 106 | }
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| 107 |
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[360] | 108 | static const NSDateFormatterStyle formatterStyles[] = {
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| 109 | NSDateFormatterShortStyle,
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| 110 | NSDateFormatterMediumStyle,
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| 111 | NSDateFormatterLongStyle,
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| 112 | NSDateFormatterFullStyle,
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| 113 | NSDateFormatterNoStyle
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| 114 | };
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| 115 |
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| 116 | @implementation NJRDateFormatter
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| 117 |
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| 118 | #pragma mark initialize-release
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| 119 |
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| 120 | + (void)initialize;
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[43] | 121 | {
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[360] | 122 | dateManipFormatter = [[NSDateFormatter alloc] init];
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| 123 | [dateManipFormatter setDateFormat: @"yyyyMMddHHmmss"]; // Date::Manip's "%q"
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| 124 | init_perl();
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| 125 | }
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| 126 |
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| 127 | + (NJRDateFormatter *)dateFormatter;
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| 128 | {
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| 129 | NJRDateFormatter *formatter = [[self alloc] init];
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| 130 | NSMutableArray *tryFormatters = [[NSMutableArray alloc] init];
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| 131 |
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| 132 | for (NSDateFormatterStyle *s = formatterStyles ; *s < NSDateFormatterNoStyle ; *s++) {
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| 133 | NSDateFormatter *tryFormatter = [[NSDateFormatter alloc] init];
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| 134 | [tryFormatter setLenient: YES];
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| 135 | [tryFormatter setTimeStyle: NSDateFormatterNoStyle];
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| 136 | [tryFormatter setDateStyle: *s];
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| 137 | [tryFormatters addObject: tryFormatter];
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| 138 | [tryFormatter release];
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[43] | 139 | }
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[360] | 140 | // XXX do this in init
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| 141 | formatter->tryFormatters = tryFormatters;
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| 142 |
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| 143 | return [formatter autorelease];
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[43] | 144 | }
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[21] | 145 |
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[360] | 146 | + (NJRDateFormatter *)timeFormatter;
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| 147 | {
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| 148 | NJRDateFormatter *formatter = [[self alloc] init];
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| 149 | NSMutableArray *tryFormatters = [[NSMutableArray alloc] init];
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| 150 |
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| 151 | for (NSDateFormatterStyle *s = formatterStyles ; *s < NSDateFormatterNoStyle ; *s++) {
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| 152 | NSDateFormatter *tryFormatter = [[NSDateFormatter alloc] init];
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| 153 | [tryFormatter setLenient: YES];
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| 154 | [tryFormatter setTimeStyle: *s];
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| 155 | [tryFormatter setDateStyle: NSDateFormatterNoStyle];
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| 156 | [tryFormatters addObject: tryFormatter];
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| 157 | [tryFormatter release];
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| 158 | }
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| 159 | formatter->tryFormatters = tryFormatters;
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| 160 |
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| 161 | return [formatter autorelease];
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| 162 | }
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| 163 |
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[43] | 164 | - (void)dealloc;
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| 165 | {
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[360] | 166 | [tryFormatters release]; tryFormatters = nil;
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[43] | 167 | [super dealloc];
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| 168 | }
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| 169 |
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[360] | 170 | #pragma mark primitive formatter
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| 171 |
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| 172 | - (NSString *)stringForObjectValue:(id)obj;
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| 173 | {
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| 174 | return [super stringForObjectValue: obj];
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| 175 | }
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| 176 |
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| 177 | - (NSAttributedString *)attributedStringForObjectValue:(id)obj withDefaultAttributes:(NSDictionary *)attrs;
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| 178 | {
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| 179 | return [super attributedStringForObjectValue: obj
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| 180 | withDefaultAttributes: attrs];
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| 181 | }
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| 182 |
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[21] | 183 | - (BOOL)getObjectValue:(id *)anObject forString:(NSString *)string errorDescription:(NSString **)error
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| 184 | {
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[360] | 185 | if ([super getObjectValue: anObject forString: string errorDescription: error])
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| 186 | return YES;
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| 187 |
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| 188 | NSDate *date;
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| 189 | NSEnumerator *e = [tryFormatters objectEnumerator];
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| 190 | NSDateFormatter *tryFormatter;
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| 191 |
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| 192 | // XXX untested; does this work?
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| 193 | while ( (tryFormatter = [e nextObject]) != nil) {
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| 194 | date = [tryFormatter dateFromString: string];
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| 195 | if (date != nil) goto success;
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| 196 | }
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| 197 |
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| 198 | date = parse_natural_language_date(string);
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| 199 | if (date != nil) goto success;
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| 200 |
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| 201 | return NO;
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| 202 |
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| 203 | success:
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[21] | 204 | *anObject = date;
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[360] | 205 | if (error != NULL) *error = nil;
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[21] | 206 | return YES;
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| 207 | }
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| 208 |
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[360] | 209 | #pragma mark miscellaneous
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| 210 |
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| 211 | + (BOOL)naturalLanguageParsingAvailable;
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| 212 | {
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| 213 | return (my_perl != NULL);
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| 214 | }
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[21] | 215 | @end
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