intl/icu/source/i18n/dtitvfmt.cpp@6474c204b198
intl/icu/source/i18n/dtitvfmt.cpp
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
1 /*******************************************************************************
2 * Copyright (C) 2008-2013, International Business Machines Corporation and
3 * others. All Rights Reserved.
4 *******************************************************************************
5 *
6 * File DTITVFMT.CPP
7 *
8 *******************************************************************************
9 */
11 #include "utypeinfo.h" // for 'typeid' to work
13 #include "unicode/dtitvfmt.h"
15 #if !UCONFIG_NO_FORMATTING
17 //TODO: put in compilation
18 //#define DTITVFMT_DEBUG 1
20 #include "cstring.h"
21 #include "unicode/msgfmt.h"
22 #include "unicode/dtptngen.h"
23 #include "unicode/dtitvinf.h"
24 #include "unicode/calendar.h"
25 #include "dtitv_impl.h"
27 #ifdef DTITVFMT_DEBUG
28 #include <iostream>
29 #include "cstring.h"
30 #endif
32 #include "gregoimp.h"
34 U_NAMESPACE_BEGIN
38 #ifdef DTITVFMT_DEBUG
39 #define PRINTMESG(msg) { std::cout << "(" << __FILE__ << ":" << __LINE__ << ") " << msg << "\n"; }
40 #endif
43 static const UChar gDateFormatSkeleton[][11] = {
44 //yMMMMEEEEd
45 {LOW_Y, CAP_M, CAP_M, CAP_M, CAP_M, CAP_E, CAP_E, CAP_E, CAP_E, LOW_D, 0},
46 //yMMMMd
47 {LOW_Y, CAP_M, CAP_M, CAP_M, CAP_M, LOW_D, 0},
48 //yMMMd
49 {LOW_Y, CAP_M, CAP_M, CAP_M, LOW_D, 0},
50 //yMd
51 {LOW_Y, CAP_M, LOW_D, 0} };
54 static const char gDateTimePatternsTag[]="DateTimePatterns";
57 // latestFirst:
58 static const UChar gLaterFirstPrefix[] = {LOW_L, LOW_A, LOW_T, LOW_E, LOW_S,LOW_T, CAP_F, LOW_I, LOW_R, LOW_S, LOW_T, COLON};
60 // earliestFirst:
61 static const UChar gEarlierFirstPrefix[] = {LOW_E, LOW_A, LOW_R, LOW_L, LOW_I, LOW_E, LOW_S, LOW_T, CAP_F, LOW_I, LOW_R, LOW_S, LOW_T, COLON};
64 UOBJECT_DEFINE_RTTI_IMPLEMENTATION(DateIntervalFormat)
68 DateIntervalFormat* U_EXPORT2
69 DateIntervalFormat::createInstance(const UnicodeString& skeleton,
70 UErrorCode& status) {
71 return createInstance(skeleton, Locale::getDefault(), status);
72 }
75 DateIntervalFormat* U_EXPORT2
76 DateIntervalFormat::createInstance(const UnicodeString& skeleton,
77 const Locale& locale,
78 UErrorCode& status) {
79 #ifdef DTITVFMT_DEBUG
80 char result[1000];
81 char result_1[1000];
82 char mesg[2000];
83 skeleton.extract(0, skeleton.length(), result, "UTF-8");
84 UnicodeString pat;
85 ((SimpleDateFormat*)dtfmt)->toPattern(pat);
86 pat.extract(0, pat.length(), result_1, "UTF-8");
87 sprintf(mesg, "skeleton: %s; pattern: %s\n", result, result_1);
88 PRINTMESG(mesg)
89 #endif
91 DateIntervalInfo* dtitvinf = new DateIntervalInfo(locale, status);
92 return create(locale, dtitvinf, &skeleton, status);
93 }
97 DateIntervalFormat* U_EXPORT2
98 DateIntervalFormat::createInstance(const UnicodeString& skeleton,
99 const DateIntervalInfo& dtitvinf,
100 UErrorCode& status) {
101 return createInstance(skeleton, Locale::getDefault(), dtitvinf, status);
102 }
105 DateIntervalFormat* U_EXPORT2
106 DateIntervalFormat::createInstance(const UnicodeString& skeleton,
107 const Locale& locale,
108 const DateIntervalInfo& dtitvinf,
109 UErrorCode& status) {
110 DateIntervalInfo* ptn = dtitvinf.clone();
111 return create(locale, ptn, &skeleton, status);
112 }
115 DateIntervalFormat::DateIntervalFormat()
116 : fInfo(NULL),
117 fDateFormat(NULL),
118 fFromCalendar(NULL),
119 fToCalendar(NULL),
120 fDtpng(NULL)
121 {}
124 DateIntervalFormat::DateIntervalFormat(const DateIntervalFormat& itvfmt)
125 : Format(itvfmt),
126 fInfo(NULL),
127 fDateFormat(NULL),
128 fFromCalendar(NULL),
129 fToCalendar(NULL),
130 fDtpng(NULL) {
131 *this = itvfmt;
132 }
135 DateIntervalFormat&
136 DateIntervalFormat::operator=(const DateIntervalFormat& itvfmt) {
137 if ( this != &itvfmt ) {
138 delete fDateFormat;
139 delete fInfo;
140 delete fFromCalendar;
141 delete fToCalendar;
142 delete fDtpng;
143 if ( itvfmt.fDateFormat ) {
144 fDateFormat = (SimpleDateFormat*)itvfmt.fDateFormat->clone();
145 } else {
146 fDateFormat = NULL;
147 }
148 if ( itvfmt.fInfo ) {
149 fInfo = itvfmt.fInfo->clone();
150 } else {
151 fInfo = NULL;
152 }
153 if ( itvfmt.fFromCalendar ) {
154 fFromCalendar = itvfmt.fFromCalendar->clone();
155 } else {
156 fFromCalendar = NULL;
157 }
158 if ( itvfmt.fToCalendar ) {
159 fToCalendar = itvfmt.fToCalendar->clone();
160 } else {
161 fToCalendar = NULL;
162 }
163 fSkeleton = itvfmt.fSkeleton;
164 int8_t i;
165 for ( i = 0; i< DateIntervalInfo::kIPI_MAX_INDEX; ++i ) {
166 fIntervalPatterns[i] = itvfmt.fIntervalPatterns[i];
167 }
168 if (itvfmt.fDtpng) {
169 fDtpng = itvfmt.fDtpng->clone();
170 }
171 }
172 return *this;
173 }
176 DateIntervalFormat::~DateIntervalFormat() {
177 delete fInfo;
178 delete fDateFormat;
179 delete fFromCalendar;
180 delete fToCalendar;
181 delete fDtpng;
182 }
185 Format*
186 DateIntervalFormat::clone(void) const {
187 return new DateIntervalFormat(*this);
188 }
191 UBool
192 DateIntervalFormat::operator==(const Format& other) const {
193 if (typeid(*this) == typeid(other)) {
194 const DateIntervalFormat* fmt = (DateIntervalFormat*)&other;
195 #ifdef DTITVFMT_DEBUG
196 UBool equal;
197 equal = (this == fmt);
199 equal = (*fInfo == *fmt->fInfo);
200 equal = (*fDateFormat == *fmt->fDateFormat);
201 equal = fFromCalendar->isEquivalentTo(*fmt->fFromCalendar) ;
202 equal = fToCalendar->isEquivalentTo(*fmt->fToCalendar) ;
203 equal = (fSkeleton == fmt->fSkeleton);
204 #endif
205 UBool res;
206 res = ( this == fmt ) ||
207 ( Format::operator==(other) &&
208 fInfo &&
209 ( *fInfo == *fmt->fInfo ) &&
210 fDateFormat &&
211 ( *fDateFormat == *fmt->fDateFormat ) &&
212 fFromCalendar &&
213 fFromCalendar->isEquivalentTo(*fmt->fFromCalendar) &&
214 fToCalendar &&
215 fToCalendar->isEquivalentTo(*fmt->fToCalendar) &&
216 fSkeleton == fmt->fSkeleton &&
217 fDtpng &&
218 (*fDtpng == *fmt->fDtpng) );
219 int8_t i;
220 for (i = 0; i< DateIntervalInfo::kIPI_MAX_INDEX && res == TRUE; ++i ) {
221 res = ( fIntervalPatterns[i].firstPart ==
222 fmt->fIntervalPatterns[i].firstPart) &&
223 ( fIntervalPatterns[i].secondPart ==
224 fmt->fIntervalPatterns[i].secondPart ) &&
225 ( fIntervalPatterns[i].laterDateFirst ==
226 fmt->fIntervalPatterns[i].laterDateFirst) ;
227 }
228 return res;
229 }
230 return FALSE;
231 }
235 UnicodeString&
236 DateIntervalFormat::format(const Formattable& obj,
237 UnicodeString& appendTo,
238 FieldPosition& fieldPosition,
239 UErrorCode& status) const {
240 if ( U_FAILURE(status) ) {
241 return appendTo;
242 }
244 if ( obj.getType() == Formattable::kObject ) {
245 const UObject* formatObj = obj.getObject();
246 const DateInterval* interval = dynamic_cast<const DateInterval*>(formatObj);
247 if (interval != NULL){
248 return format(interval, appendTo, fieldPosition, status);
249 }
250 }
251 status = U_ILLEGAL_ARGUMENT_ERROR;
252 return appendTo;
253 }
256 UnicodeString&
257 DateIntervalFormat::format(const DateInterval* dtInterval,
258 UnicodeString& appendTo,
259 FieldPosition& fieldPosition,
260 UErrorCode& status) const {
261 if ( U_FAILURE(status) ) {
262 return appendTo;
263 }
265 if ( fFromCalendar != NULL && fToCalendar != NULL &&
266 fDateFormat != NULL && fInfo != NULL ) {
267 fFromCalendar->setTime(dtInterval->getFromDate(), status);
268 fToCalendar->setTime(dtInterval->getToDate(), status);
269 if ( U_SUCCESS(status) ) {
270 return format(*fFromCalendar, *fToCalendar, appendTo,fieldPosition, status);
271 }
272 }
273 return appendTo;
274 }
277 UnicodeString&
278 DateIntervalFormat::format(Calendar& fromCalendar,
279 Calendar& toCalendar,
280 UnicodeString& appendTo,
281 FieldPosition& pos,
282 UErrorCode& status) const {
283 if ( U_FAILURE(status) ) {
284 return appendTo;
285 }
287 // not support different calendar types and time zones
288 //if ( fromCalendar.getType() != toCalendar.getType() ) {
289 if ( !fromCalendar.isEquivalentTo(toCalendar) ) {
290 status = U_ILLEGAL_ARGUMENT_ERROR;
291 return appendTo;
292 }
294 // First, find the largest different calendar field.
295 UCalendarDateFields field = UCAL_FIELD_COUNT;
297 if ( fromCalendar.get(UCAL_ERA,status) != toCalendar.get(UCAL_ERA,status)) {
298 field = UCAL_ERA;
299 } else if ( fromCalendar.get(UCAL_YEAR, status) !=
300 toCalendar.get(UCAL_YEAR, status) ) {
301 field = UCAL_YEAR;
302 } else if ( fromCalendar.get(UCAL_MONTH, status) !=
303 toCalendar.get(UCAL_MONTH, status) ) {
304 field = UCAL_MONTH;
305 } else if ( fromCalendar.get(UCAL_DATE, status) !=
306 toCalendar.get(UCAL_DATE, status) ) {
307 field = UCAL_DATE;
308 } else if ( fromCalendar.get(UCAL_AM_PM, status) !=
309 toCalendar.get(UCAL_AM_PM, status) ) {
310 field = UCAL_AM_PM;
311 } else if ( fromCalendar.get(UCAL_HOUR, status) !=
312 toCalendar.get(UCAL_HOUR, status) ) {
313 field = UCAL_HOUR;
314 } else if ( fromCalendar.get(UCAL_MINUTE, status) !=
315 toCalendar.get(UCAL_MINUTE, status) ) {
316 field = UCAL_MINUTE;
317 }
319 if ( U_FAILURE(status) ) {
320 return appendTo;
321 }
322 if ( field == UCAL_FIELD_COUNT ) {
323 /* ignore the second/millisecond etc. small fields' difference.
324 * use single date when all the above are the same.
325 */
326 return fDateFormat->format(fromCalendar, appendTo, pos);
327 }
329 // following call should not set wrong status,
330 // all the pass-in fields are valid till here
331 int32_t itvPtnIndex = DateIntervalInfo::calendarFieldToIntervalIndex(field,
332 status);
333 const PatternInfo& intervalPattern = fIntervalPatterns[itvPtnIndex];
335 if ( intervalPattern.firstPart.isEmpty() &&
336 intervalPattern.secondPart.isEmpty() ) {
337 if ( fDateFormat->isFieldUnitIgnored(field) ) {
338 /* the largest different calendar field is small than
339 * the smallest calendar field in pattern,
340 * return single date format.
341 */
342 return fDateFormat->format(fromCalendar, appendTo, pos);
343 }
344 return fallbackFormat(fromCalendar, toCalendar, appendTo, pos, status);
345 }
346 // If the first part in interval pattern is empty,
347 // the 2nd part of it saves the full-pattern used in fall-back.
348 // For a 'real' interval pattern, the first part will never be empty.
349 if ( intervalPattern.firstPart.isEmpty() ) {
350 // fall back
351 UnicodeString originalPattern;
352 fDateFormat->toPattern(originalPattern);
353 fDateFormat->applyPattern(intervalPattern.secondPart);
354 appendTo = fallbackFormat(fromCalendar, toCalendar, appendTo, pos, status);
355 fDateFormat->applyPattern(originalPattern);
356 return appendTo;
357 }
358 Calendar* firstCal;
359 Calendar* secondCal;
360 if ( intervalPattern.laterDateFirst ) {
361 firstCal = &toCalendar;
362 secondCal = &fromCalendar;
363 } else {
364 firstCal = &fromCalendar;
365 secondCal = &toCalendar;
366 }
367 // break the interval pattern into 2 parts,
368 // first part should not be empty,
369 UnicodeString originalPattern;
370 fDateFormat->toPattern(originalPattern);
371 fDateFormat->applyPattern(intervalPattern.firstPart);
372 fDateFormat->format(*firstCal, appendTo, pos);
373 if ( !intervalPattern.secondPart.isEmpty() ) {
374 fDateFormat->applyPattern(intervalPattern.secondPart);
375 fDateFormat->format(*secondCal, appendTo, pos);
376 }
377 fDateFormat->applyPattern(originalPattern);
378 return appendTo;
379 }
383 void
384 DateIntervalFormat::parseObject(const UnicodeString& /* source */,
385 Formattable& /* result */,
386 ParsePosition& /* parse_pos */) const {
387 // parseObject(const UnicodeString&, Formattable&, UErrorCode&) const
388 // will set status as U_INVALID_FORMAT_ERROR if
389 // parse_pos is still 0
390 }
395 const DateIntervalInfo*
396 DateIntervalFormat::getDateIntervalInfo() const {
397 return fInfo;
398 }
401 void
402 DateIntervalFormat::setDateIntervalInfo(const DateIntervalInfo& newItvPattern,
403 UErrorCode& status) {
404 delete fInfo;
405 fInfo = new DateIntervalInfo(newItvPattern);
406 if ( fDateFormat ) {
407 initializePattern(status);
408 }
409 }
413 const DateFormat*
414 DateIntervalFormat::getDateFormat() const {
415 return fDateFormat;
416 }
419 void
420 DateIntervalFormat::adoptTimeZone(TimeZone* zone)
421 {
422 if (fDateFormat != NULL) {
423 fDateFormat->adoptTimeZone(zone);
424 }
425 // The fDateFormat has the master calendar for the DateIntervalFormat and has
426 // ownership of any adopted TimeZone; fFromCalendar and fToCalendar are internal
427 // work clones of that calendar (and should not also be given ownership of the
428 // adopted TimeZone).
429 if (fFromCalendar) {
430 fFromCalendar->setTimeZone(*zone);
431 }
432 if (fToCalendar) {
433 fToCalendar->setTimeZone(*zone);
434 }
435 }
437 void
438 DateIntervalFormat::setTimeZone(const TimeZone& zone)
439 {
440 if (fDateFormat != NULL) {
441 fDateFormat->setTimeZone(zone);
442 }
443 // The fDateFormat has the master calendar for the DateIntervalFormat;
444 // fFromCalendar and fToCalendar are internal work clones of that calendar.
445 if (fFromCalendar) {
446 fFromCalendar->setTimeZone(zone);
447 }
448 if (fToCalendar) {
449 fToCalendar->setTimeZone(zone);
450 }
451 }
453 const TimeZone&
454 DateIntervalFormat::getTimeZone() const
455 {
456 if (fDateFormat != NULL) {
457 return fDateFormat->getTimeZone();
458 }
459 // If fDateFormat is NULL (unexpected), create default timezone.
460 return *(TimeZone::createDefault());
461 }
463 DateIntervalFormat::DateIntervalFormat(const Locale& locale,
464 DateIntervalInfo* dtItvInfo,
465 const UnicodeString* skeleton,
466 UErrorCode& status)
467 : fInfo(NULL),
468 fDateFormat(NULL),
469 fFromCalendar(NULL),
470 fToCalendar(NULL),
471 fDtpng(NULL)
472 {
473 if ( U_FAILURE(status) ) {
474 delete dtItvInfo;
475 return;
476 }
477 fDtpng = DateTimePatternGenerator::createInstance(locale, status);
478 SimpleDateFormat* dtfmt = createSDFPatternInstance(*skeleton, locale,
479 fDtpng, status);
480 if ( U_FAILURE(status) ) {
481 delete dtItvInfo;
482 delete fDtpng;
483 delete dtfmt;
484 return;
485 }
486 if ( dtfmt == NULL || dtItvInfo == NULL || fDtpng == NULL ) {
487 status = U_MEMORY_ALLOCATION_ERROR;
488 // safe to delete NULL
489 delete dtfmt;
490 delete dtItvInfo;
491 delete fDtpng;
492 return;
493 }
494 if ( skeleton ) {
495 fSkeleton = *skeleton;
496 }
497 fInfo = dtItvInfo;
498 fDateFormat = dtfmt;
499 if ( dtfmt->getCalendar() ) {
500 fFromCalendar = dtfmt->getCalendar()->clone();
501 fToCalendar = dtfmt->getCalendar()->clone();
502 } else {
503 fFromCalendar = NULL;
504 fToCalendar = NULL;
505 }
506 initializePattern(status);
507 }
510 SimpleDateFormat* U_EXPORT2
511 DateIntervalFormat::createSDFPatternInstance(const UnicodeString& skeleton,
512 const Locale& locale,
513 DateTimePatternGenerator* dtpng,
514 UErrorCode& status)
515 {
516 if ( U_FAILURE(status) ) {
517 return NULL;
518 }
520 const UnicodeString pattern = dtpng->getBestPattern(skeleton, status);
521 if ( U_FAILURE(status) ) {
522 return NULL;
523 }
524 SimpleDateFormat* dtfmt = new SimpleDateFormat(pattern, locale, status);
525 if ( U_FAILURE(status) ) {
526 delete dtfmt;
527 return NULL;
528 }
529 return dtfmt;
530 }
533 DateIntervalFormat* U_EXPORT2
534 DateIntervalFormat::create(const Locale& locale,
535 DateIntervalInfo* dtitvinf,
536 const UnicodeString* skeleton,
537 UErrorCode& status) {
538 DateIntervalFormat* f = new DateIntervalFormat(locale, dtitvinf,
539 skeleton, status);
540 if ( f == NULL ) {
541 status = U_MEMORY_ALLOCATION_ERROR;
542 delete dtitvinf;
543 } else if ( U_FAILURE(status) ) {
544 // safe to delete f, although nothing acutally is saved
545 delete f;
546 f = 0;
547 }
548 return f;
549 }
553 /**
554 * Initialize interval patterns locale to this formatter
555 *
556 * This code is a bit complicated since
557 * 1. the interval patterns saved in resource bundle files are interval
558 * patterns based on date or time only.
559 * It does not have interval patterns based on both date and time.
560 * Interval patterns on both date and time are algorithm generated.
561 *
562 * For example, it has interval patterns on skeleton "dMy" and "hm",
563 * but it does not have interval patterns on skeleton "dMyhm".
564 *
565 * The rule to genearte interval patterns for both date and time skeleton are
566 * 1) when the year, month, or day differs, concatenate the two original
567 * expressions with a separator between,
568 * For example, interval pattern from "Jan 10, 2007 10:10 am"
569 * to "Jan 11, 2007 10:10am" is
570 * "Jan 10, 2007 10:10 am - Jan 11, 2007 10:10am"
571 *
572 * 2) otherwise, present the date followed by the range expression
573 * for the time.
574 * For example, interval pattern from "Jan 10, 2007 10:10 am"
575 * to "Jan 10, 2007 11:10am" is
576 * "Jan 10, 2007 10:10 am - 11:10am"
577 *
578 * 2. even a pattern does not request a certion calendar field,
579 * the interval pattern needs to include such field if such fields are
580 * different between 2 dates.
581 * For example, a pattern/skeleton is "hm", but the interval pattern
582 * includes year, month, and date when year, month, and date differs.
583 *
584 * @param status output param set to success/failure code on exit
585 * @stable ICU 4.0
586 */
587 void
588 DateIntervalFormat::initializePattern(UErrorCode& status) {
589 if ( U_FAILURE(status) ) {
590 return;
591 }
592 const Locale& locale = fDateFormat->getSmpFmtLocale();
593 if ( fSkeleton.isEmpty() ) {
594 UnicodeString fullPattern;
595 fDateFormat->toPattern(fullPattern);
596 #ifdef DTITVFMT_DEBUG
597 char result[1000];
598 char result_1[1000];
599 char mesg[2000];
600 fSkeleton.extract(0, fSkeleton.length(), result, "UTF-8");
601 sprintf(mesg, "in getBestSkeleton: fSkeleton: %s; \n", result);
602 PRINTMESG(mesg)
603 #endif
604 // fSkeleton is already set by createDateIntervalInstance()
605 // or by createInstance(UnicodeString skeleton, .... )
606 fSkeleton = fDtpng->getSkeleton(fullPattern, status);
607 if ( U_FAILURE(status) ) {
608 return;
609 }
610 }
612 // initialize the fIntervalPattern ordering
613 int8_t i;
614 for ( i = 0; i < DateIntervalInfo::kIPI_MAX_INDEX; ++i ) {
615 fIntervalPatterns[i].laterDateFirst = fInfo->getDefaultOrder();
616 }
618 /* Check whether the skeleton is a combination of date and time.
619 * For the complication reason 1 explained above.
620 */
621 UnicodeString dateSkeleton;
622 UnicodeString timeSkeleton;
623 UnicodeString normalizedTimeSkeleton;
624 UnicodeString normalizedDateSkeleton;
627 /* the difference between time skeleton and normalizedTimeSkeleton are:
628 * 1. (Formerly, normalized time skeleton folded 'H' to 'h'; no longer true)
629 * 2. 'a' is omitted in normalized time skeleton.
630 * 3. there is only one appearance for 'h' or 'H', 'm','v', 'z' in normalized
631 * time skeleton
632 *
633 * The difference between date skeleton and normalizedDateSkeleton are:
634 * 1. both 'y' and 'd' appear only once in normalizeDateSkeleton
635 * 2. 'E' and 'EE' are normalized into 'EEE'
636 * 3. 'MM' is normalized into 'M'
637 */
638 getDateTimeSkeleton(fSkeleton, dateSkeleton, normalizedDateSkeleton,
639 timeSkeleton, normalizedTimeSkeleton);
641 #ifdef DTITVFMT_DEBUG
642 char result[1000];
643 char result_1[1000];
644 char mesg[2000];
645 fSkeleton.extract(0, fSkeleton.length(), result, "UTF-8");
646 sprintf(mesg, "in getBestSkeleton: fSkeleton: %s; \n", result);
647 PRINTMESG(mesg)
648 #endif
651 UBool found = setSeparateDateTimePtn(normalizedDateSkeleton,
652 normalizedTimeSkeleton);
654 if ( found == false ) {
655 // use fallback
656 // TODO: if user asks "m"(minute), but "d"(day) differ
657 if ( timeSkeleton.length() != 0 ) {
658 if ( dateSkeleton.length() == 0 ) {
659 // prefix with yMd
660 timeSkeleton.insert(0, gDateFormatSkeleton[DateFormat::kShort], -1);
661 UnicodeString pattern = fDtpng->getBestPattern(timeSkeleton, status);
662 if ( U_FAILURE(status) ) {
663 return;
664 }
665 // for fall back interval patterns,
666 // the first part of the pattern is empty,
667 // the second part of the pattern is the full-pattern
668 // should be used in fall-back.
669 setPatternInfo(UCAL_DATE, NULL, &pattern, fInfo->getDefaultOrder());
670 setPatternInfo(UCAL_MONTH, NULL, &pattern, fInfo->getDefaultOrder());
671 setPatternInfo(UCAL_YEAR, NULL, &pattern, fInfo->getDefaultOrder());
672 } else {
673 // TODO: fall back
674 }
675 } else {
676 // TODO: fall back
677 }
678 return;
679 } // end of skeleton not found
680 // interval patterns for skeleton are found in resource
681 if ( timeSkeleton.length() == 0 ) {
682 // done
683 } else if ( dateSkeleton.length() == 0 ) {
684 // prefix with yMd
685 timeSkeleton.insert(0, gDateFormatSkeleton[DateFormat::kShort], -1);
686 UnicodeString pattern = fDtpng->getBestPattern(timeSkeleton, status);
687 if ( U_FAILURE(status) ) {
688 return;
689 }
690 // for fall back interval patterns,
691 // the first part of the pattern is empty,
692 // the second part of the pattern is the full-pattern
693 // should be used in fall-back.
694 setPatternInfo(UCAL_DATE, NULL, &pattern, fInfo->getDefaultOrder());
695 setPatternInfo(UCAL_MONTH, NULL, &pattern, fInfo->getDefaultOrder());
696 setPatternInfo(UCAL_YEAR, NULL, &pattern, fInfo->getDefaultOrder());
697 } else {
698 /* if both present,
699 * 1) when the year, month, or day differs,
700 * concatenate the two original expressions with a separator between,
701 * 2) otherwise, present the date followed by the
702 * range expression for the time.
703 */
704 /*
705 * 1) when the year, month, or day differs,
706 * concatenate the two original expressions with a separator between,
707 */
708 // if field exists, use fall back
709 UnicodeString skeleton = fSkeleton;
710 if ( !fieldExistsInSkeleton(UCAL_DATE, dateSkeleton) ) {
711 // prefix skeleton with 'd'
712 skeleton.insert(0, LOW_D);
713 setFallbackPattern(UCAL_DATE, skeleton, status);
714 }
715 if ( !fieldExistsInSkeleton(UCAL_MONTH, dateSkeleton) ) {
716 // then prefix skeleton with 'M'
717 skeleton.insert(0, CAP_M);
718 setFallbackPattern(UCAL_MONTH, skeleton, status);
719 }
720 if ( !fieldExistsInSkeleton(UCAL_YEAR, dateSkeleton) ) {
721 // then prefix skeleton with 'y'
722 skeleton.insert(0, LOW_Y);
723 setFallbackPattern(UCAL_YEAR, skeleton, status);
724 }
726 /*
727 * 2) otherwise, present the date followed by the
728 * range expression for the time.
729 */
730 // Need the Date/Time pattern for concatnation the date with
731 // the time interval.
732 // The date/time pattern ( such as {0} {1} ) is saved in
733 // calendar, that is why need to get the CalendarData here.
734 CalendarData* calData = new CalendarData(locale, NULL, status);
736 if ( U_FAILURE(status) ) {
737 delete calData;
738 return;
739 }
741 if ( calData == NULL ) {
742 status = U_MEMORY_ALLOCATION_ERROR;
743 return;
744 }
746 const UResourceBundle* dateTimePatternsRes = calData->getByKey(
747 gDateTimePatternsTag, status);
748 int32_t dateTimeFormatLength;
749 const UChar* dateTimeFormat = ures_getStringByIndex(
750 dateTimePatternsRes,
751 (int32_t)DateFormat::kDateTime,
752 &dateTimeFormatLength, &status);
753 if ( U_FAILURE(status) ) {
754 return;
755 }
757 UnicodeString datePattern = fDtpng->getBestPattern(dateSkeleton, status);
759 concatSingleDate2TimeInterval(dateTimeFormat, dateTimeFormatLength,
760 datePattern, UCAL_AM_PM, status);
761 concatSingleDate2TimeInterval(dateTimeFormat, dateTimeFormatLength,
762 datePattern, UCAL_HOUR, status);
763 concatSingleDate2TimeInterval(dateTimeFormat, dateTimeFormatLength,
764 datePattern, UCAL_MINUTE, status);
765 delete calData;
766 }
767 }
771 void U_EXPORT2
772 DateIntervalFormat::getDateTimeSkeleton(const UnicodeString& skeleton,
773 UnicodeString& dateSkeleton,
774 UnicodeString& normalizedDateSkeleton,
775 UnicodeString& timeSkeleton,
776 UnicodeString& normalizedTimeSkeleton) {
777 // dateSkeleton follows the sequence of y*M*E*d*
778 // timeSkeleton follows the sequence of hm*[v|z]?
779 int32_t ECount = 0;
780 int32_t dCount = 0;
781 int32_t MCount = 0;
782 int32_t yCount = 0;
783 int32_t hCount = 0;
784 int32_t HCount = 0;
785 int32_t mCount = 0;
786 int32_t vCount = 0;
787 int32_t zCount = 0;
788 int32_t i;
790 for (i = 0; i < skeleton.length(); ++i) {
791 UChar ch = skeleton[i];
792 switch ( ch ) {
793 case CAP_E:
794 dateSkeleton.append(ch);
795 ++ECount;
796 break;
797 case LOW_D:
798 dateSkeleton.append(ch);
799 ++dCount;
800 break;
801 case CAP_M:
802 dateSkeleton.append(ch);
803 ++MCount;
804 break;
805 case LOW_Y:
806 dateSkeleton.append(ch);
807 ++yCount;
808 break;
809 case CAP_G:
810 case CAP_Y:
811 case LOW_U:
812 case CAP_Q:
813 case LOW_Q:
814 case CAP_L:
815 case LOW_L:
816 case CAP_W:
817 case LOW_W:
818 case CAP_D:
819 case CAP_F:
820 case LOW_G:
821 case LOW_E:
822 case LOW_C:
823 normalizedDateSkeleton.append(ch);
824 dateSkeleton.append(ch);
825 break;
826 case LOW_A:
827 // 'a' is implicitly handled
828 timeSkeleton.append(ch);
829 break;
830 case LOW_H:
831 timeSkeleton.append(ch);
832 ++hCount;
833 break;
834 case CAP_H:
835 timeSkeleton.append(ch);
836 ++HCount;
837 break;
838 case LOW_M:
839 timeSkeleton.append(ch);
840 ++mCount;
841 break;
842 case LOW_Z:
843 ++zCount;
844 timeSkeleton.append(ch);
845 break;
846 case LOW_V:
847 ++vCount;
848 timeSkeleton.append(ch);
849 break;
850 case CAP_V:
851 case CAP_Z:
852 case LOW_K:
853 case CAP_K:
854 case LOW_J:
855 case LOW_S:
856 case CAP_S:
857 case CAP_A:
858 timeSkeleton.append(ch);
859 normalizedTimeSkeleton.append(ch);
860 break;
861 }
862 }
864 /* generate normalized form for date*/
865 if ( yCount != 0 ) {
866 for (i = 0; i < yCount; ++i) {
867 normalizedDateSkeleton.append(LOW_Y);
868 }
869 }
870 if ( MCount != 0 ) {
871 if ( MCount < 3 ) {
872 normalizedDateSkeleton.append(CAP_M);
873 } else {
874 int32_t i;
875 for ( i = 0; i < MCount && i < MAX_M_COUNT; ++i ) {
876 normalizedDateSkeleton.append(CAP_M);
877 }
878 }
879 }
880 if ( ECount != 0 ) {
881 if ( ECount <= 3 ) {
882 normalizedDateSkeleton.append(CAP_E);
883 } else {
884 int32_t i;
885 for ( i = 0; i < ECount && i < MAX_E_COUNT; ++i ) {
886 normalizedDateSkeleton.append(CAP_E);
887 }
888 }
889 }
890 if ( dCount != 0 ) {
891 normalizedDateSkeleton.append(LOW_D);
892 }
894 /* generate normalized form for time */
895 if ( HCount != 0 ) {
896 normalizedTimeSkeleton.append(CAP_H);
897 }
898 else if ( hCount != 0 ) {
899 normalizedTimeSkeleton.append(LOW_H);
900 }
901 if ( mCount != 0 ) {
902 normalizedTimeSkeleton.append(LOW_M);
903 }
904 if ( zCount != 0 ) {
905 normalizedTimeSkeleton.append(LOW_Z);
906 }
907 if ( vCount != 0 ) {
908 normalizedTimeSkeleton.append(LOW_V);
909 }
910 }
913 /**
914 * Generate date or time interval pattern from resource,
915 * and set them into the interval pattern locale to this formatter.
916 *
917 * It needs to handle the following:
918 * 1. need to adjust field width.
919 * For example, the interval patterns saved in DateIntervalInfo
920 * includes "dMMMy", but not "dMMMMy".
921 * Need to get interval patterns for dMMMMy from dMMMy.
922 * Another example, the interval patterns saved in DateIntervalInfo
923 * includes "hmv", but not "hmz".
924 * Need to get interval patterns for "hmz' from 'hmv'
925 *
926 * 2. there might be no pattern for 'y' differ for skeleton "Md",
927 * in order to get interval patterns for 'y' differ,
928 * need to look for it from skeleton 'yMd'
929 *
930 * @param dateSkeleton normalized date skeleton
931 * @param timeSkeleton normalized time skeleton
932 * @return whether the resource is found for the skeleton.
933 * TRUE if interval pattern found for the skeleton,
934 * FALSE otherwise.
935 * @stable ICU 4.0
936 */
937 UBool
938 DateIntervalFormat::setSeparateDateTimePtn(
939 const UnicodeString& dateSkeleton,
940 const UnicodeString& timeSkeleton) {
941 const UnicodeString* skeleton;
942 // if both date and time skeleton present,
943 // the final interval pattern might include time interval patterns
944 // ( when, am_pm, hour, minute differ ),
945 // but not date interval patterns ( when year, month, day differ ).
946 // For year/month/day differ, it falls back to fall-back pattern.
947 if ( timeSkeleton.length() != 0 ) {
948 skeleton = &timeSkeleton;
949 } else {
950 skeleton = &dateSkeleton;
951 }
953 /* interval patterns for skeleton "dMMMy" (but not "dMMMMy")
954 * are defined in resource,
955 * interval patterns for skeleton "dMMMMy" are calculated by
956 * 1. get the best match skeleton for "dMMMMy", which is "dMMMy"
957 * 2. get the interval patterns for "dMMMy",
958 * 3. extend "MMM" to "MMMM" in above interval patterns for "dMMMMy"
959 * getBestSkeleton() is step 1.
960 */
961 // best skeleton, and the difference information
962 int8_t differenceInfo = 0;
963 const UnicodeString* bestSkeleton = fInfo->getBestSkeleton(*skeleton,
964 differenceInfo);
965 /* best skeleton could be NULL.
966 For example: in "ca" resource file,
967 interval format is defined as following
968 intervalFormats{
969 fallback{"{0} - {1}"}
970 }
971 there is no skeletons/interval patterns defined,
972 and the best skeleton match could be NULL
973 */
974 if ( bestSkeleton == NULL ) {
975 return false;
976 }
978 // difference:
979 // 0 means the best matched skeleton is the same as input skeleton
980 // 1 means the fields are the same, but field width are different
981 // 2 means the only difference between fields are v/z,
982 // -1 means there are other fields difference
983 if ( differenceInfo == -1 ) {
984 // skeleton has different fields, not only v/z difference
985 return false;
986 }
988 if ( timeSkeleton.length() == 0 ) {
989 UnicodeString extendedSkeleton;
990 UnicodeString extendedBestSkeleton;
991 // only has date skeleton
992 setIntervalPattern(UCAL_DATE, skeleton, bestSkeleton, differenceInfo,
993 &extendedSkeleton, &extendedBestSkeleton);
995 UBool extended = setIntervalPattern(UCAL_MONTH, skeleton, bestSkeleton,
996 differenceInfo,
997 &extendedSkeleton, &extendedBestSkeleton);
999 if ( extended ) {
1000 bestSkeleton = &extendedBestSkeleton;
1001 skeleton = &extendedSkeleton;
1002 }
1003 setIntervalPattern(UCAL_YEAR, skeleton, bestSkeleton, differenceInfo,
1004 &extendedSkeleton, &extendedBestSkeleton);
1005 } else {
1006 setIntervalPattern(UCAL_MINUTE, skeleton, bestSkeleton, differenceInfo);
1007 setIntervalPattern(UCAL_HOUR, skeleton, bestSkeleton, differenceInfo);
1008 setIntervalPattern(UCAL_AM_PM, skeleton, bestSkeleton, differenceInfo);
1009 }
1010 return true;
1011 }
1015 void
1016 DateIntervalFormat::setFallbackPattern(UCalendarDateFields field,
1017 const UnicodeString& skeleton,
1018 UErrorCode& status) {
1019 if ( U_FAILURE(status) ) {
1020 return;
1021 }
1022 UnicodeString pattern = fDtpng->getBestPattern(skeleton, status);
1023 if ( U_FAILURE(status) ) {
1024 return;
1025 }
1026 setPatternInfo(field, NULL, &pattern, fInfo->getDefaultOrder());
1027 }
1032 void
1033 DateIntervalFormat::setPatternInfo(UCalendarDateFields field,
1034 const UnicodeString* firstPart,
1035 const UnicodeString* secondPart,
1036 UBool laterDateFirst) {
1037 // for fall back interval patterns,
1038 // the first part of the pattern is empty,
1039 // the second part of the pattern is the full-pattern
1040 // should be used in fall-back.
1041 UErrorCode status = U_ZERO_ERROR;
1042 // following should not set any wrong status.
1043 int32_t itvPtnIndex = DateIntervalInfo::calendarFieldToIntervalIndex(field,
1044 status);
1045 if ( U_FAILURE(status) ) {
1046 return;
1047 }
1048 PatternInfo& ptn = fIntervalPatterns[itvPtnIndex];
1049 if ( firstPart ) {
1050 ptn.firstPart = *firstPart;
1051 }
1052 if ( secondPart ) {
1053 ptn.secondPart = *secondPart;
1054 }
1055 ptn.laterDateFirst = laterDateFirst;
1056 }
1058 void
1059 DateIntervalFormat::setIntervalPattern(UCalendarDateFields field,
1060 const UnicodeString& intervalPattern) {
1061 UBool order = fInfo->getDefaultOrder();
1062 setIntervalPattern(field, intervalPattern, order);
1063 }
1066 void
1067 DateIntervalFormat::setIntervalPattern(UCalendarDateFields field,
1068 const UnicodeString& intervalPattern,
1069 UBool laterDateFirst) {
1070 const UnicodeString* pattern = &intervalPattern;
1071 UBool order = laterDateFirst;
1072 // check for "latestFirst:" or "earliestFirst:" prefix
1073 int8_t prefixLength = sizeof(gLaterFirstPrefix)/sizeof(gLaterFirstPrefix[0]);
1074 int8_t earliestFirstLength = sizeof(gEarlierFirstPrefix)/sizeof(gEarlierFirstPrefix[0]);
1075 UnicodeString realPattern;
1076 if ( intervalPattern.startsWith(gLaterFirstPrefix, prefixLength) ) {
1077 order = true;
1078 intervalPattern.extract(prefixLength,
1079 intervalPattern.length() - prefixLength,
1080 realPattern);
1081 pattern = &realPattern;
1082 } else if ( intervalPattern.startsWith(gEarlierFirstPrefix,
1083 earliestFirstLength) ) {
1084 order = false;
1085 intervalPattern.extract(earliestFirstLength,
1086 intervalPattern.length() - earliestFirstLength,
1087 realPattern);
1088 pattern = &realPattern;
1089 }
1091 int32_t splitPoint = splitPatternInto2Part(*pattern);
1093 UnicodeString firstPart;
1094 UnicodeString secondPart;
1095 pattern->extract(0, splitPoint, firstPart);
1096 if ( splitPoint < pattern->length() ) {
1097 pattern->extract(splitPoint, pattern->length()-splitPoint, secondPart);
1098 }
1099 setPatternInfo(field, &firstPart, &secondPart, order);
1100 }
1105 /**
1106 * Generate interval pattern from existing resource
1107 *
1108 * It not only save the interval patterns,
1109 * but also return the extended skeleton and its best match skeleton.
1110 *
1111 * @param field largest different calendar field
1112 * @param skeleton skeleton
1113 * @param bestSkeleton the best match skeleton which has interval pattern
1114 * defined in resource
1115 * @param differenceInfo the difference between skeleton and best skeleton
1116 * 0 means the best matched skeleton is the same as input skeleton
1117 * 1 means the fields are the same, but field width are different
1118 * 2 means the only difference between fields are v/z,
1119 * -1 means there are other fields difference
1120 *
1121 * @param extendedSkeleton extended skeleton
1122 * @param extendedBestSkeleton extended best match skeleton
1123 * @return whether the interval pattern is found
1124 * through extending skeleton or not.
1125 * TRUE if interval pattern is found by
1126 * extending skeleton, FALSE otherwise.
1127 * @stable ICU 4.0
1128 */
1129 UBool
1130 DateIntervalFormat::setIntervalPattern(UCalendarDateFields field,
1131 const UnicodeString* skeleton,
1132 const UnicodeString* bestSkeleton,
1133 int8_t differenceInfo,
1134 UnicodeString* extendedSkeleton,
1135 UnicodeString* extendedBestSkeleton) {
1136 UErrorCode status = U_ZERO_ERROR;
1137 // following getIntervalPattern() should not generate error status
1138 UnicodeString pattern;
1139 fInfo->getIntervalPattern(*bestSkeleton, field, pattern, status);
1140 if ( pattern.isEmpty() ) {
1141 // single date
1142 if ( SimpleDateFormat::isFieldUnitIgnored(*bestSkeleton, field) ) {
1143 // do nothing, format will handle it
1144 return false;
1145 }
1147 // for 24 hour system, interval patterns in resource file
1148 // might not include pattern when am_pm differ,
1149 // which should be the same as hour differ.
1150 // add it here for simplicity
1151 if ( field == UCAL_AM_PM ) {
1152 fInfo->getIntervalPattern(*bestSkeleton, UCAL_HOUR, pattern,status);
1153 if ( !pattern.isEmpty() ) {
1154 setIntervalPattern(field, pattern);
1155 }
1156 return false;
1157 }
1158 // else, looking for pattern when 'y' differ for 'dMMMM' skeleton,
1159 // first, get best match pattern "MMMd",
1160 // since there is no pattern for 'y' differs for skeleton 'MMMd',
1161 // need to look for it from skeleton 'yMMMd',
1162 // if found, adjust field width in interval pattern from
1163 // "MMM" to "MMMM".
1164 UChar fieldLetter = fgCalendarFieldToPatternLetter[field];
1165 if ( extendedSkeleton ) {
1166 *extendedSkeleton = *skeleton;
1167 *extendedBestSkeleton = *bestSkeleton;
1168 extendedSkeleton->insert(0, fieldLetter);
1169 extendedBestSkeleton->insert(0, fieldLetter);
1170 // for example, looking for patterns when 'y' differ for
1171 // skeleton "MMMM".
1172 fInfo->getIntervalPattern(*extendedBestSkeleton,field,pattern,status);
1173 if ( pattern.isEmpty() && differenceInfo == 0 ) {
1174 // if there is no skeleton "yMMMM" defined,
1175 // look for the best match skeleton, for example: "yMMM"
1176 const UnicodeString* tmpBest = fInfo->getBestSkeleton(
1177 *extendedBestSkeleton, differenceInfo);
1178 if ( tmpBest != 0 && differenceInfo != -1 ) {
1179 fInfo->getIntervalPattern(*tmpBest, field, pattern, status);
1180 bestSkeleton = tmpBest;
1181 }
1182 }
1183 }
1184 }
1185 if ( !pattern.isEmpty() ) {
1186 if ( differenceInfo != 0 ) {
1187 UnicodeString adjustIntervalPattern;
1188 adjustFieldWidth(*skeleton, *bestSkeleton, pattern, differenceInfo,
1189 adjustIntervalPattern);
1190 setIntervalPattern(field, adjustIntervalPattern);
1191 } else {
1192 setIntervalPattern(field, pattern);
1193 }
1194 if ( extendedSkeleton && !extendedSkeleton->isEmpty() ) {
1195 return TRUE;
1196 }
1197 }
1198 return FALSE;
1199 }
1203 int32_t U_EXPORT2
1204 DateIntervalFormat::splitPatternInto2Part(const UnicodeString& intervalPattern) {
1205 UBool inQuote = false;
1206 UChar prevCh = 0;
1207 int32_t count = 0;
1209 /* repeatedPattern used to record whether a pattern has already seen.
1210 It is a pattern applies to first calendar if it is first time seen,
1211 otherwise, it is a pattern applies to the second calendar
1212 */
1213 UBool patternRepeated[] =
1214 {
1215 // A B C D E F G H I J K L M N O
1216 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
1217 // P Q R S T U V W X Y Z
1218 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
1219 // a b c d e f g h i j k l m n o
1220 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
1221 // p q r s t u v w x y z
1222 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
1223 };
1225 int8_t PATTERN_CHAR_BASE = 0x41;
1227 /* loop through the pattern string character by character looking for
1228 * the first repeated pattern letter, which breaks the interval pattern
1229 * into 2 parts.
1230 */
1231 int32_t i;
1232 UBool foundRepetition = false;
1233 for (i = 0; i < intervalPattern.length(); ++i) {
1234 UChar ch = intervalPattern.charAt(i);
1236 if (ch != prevCh && count > 0) {
1237 // check the repeativeness of pattern letter
1238 UBool repeated = patternRepeated[(int)(prevCh - PATTERN_CHAR_BASE)];
1239 if ( repeated == FALSE ) {
1240 patternRepeated[prevCh - PATTERN_CHAR_BASE] = TRUE;
1241 } else {
1242 foundRepetition = true;
1243 break;
1244 }
1245 count = 0;
1246 }
1247 if (ch == '\'') {
1248 // Consecutive single quotes are a single quote literal,
1249 // either outside of quotes or between quotes
1250 if ((i+1) < intervalPattern.length() &&
1251 intervalPattern.charAt(i+1) == '\'') {
1252 ++i;
1253 } else {
1254 inQuote = ! inQuote;
1255 }
1256 }
1257 else if (!inQuote && ((ch >= 0x0061 /*'a'*/ && ch <= 0x007A /*'z'*/)
1258 || (ch >= 0x0041 /*'A'*/ && ch <= 0x005A /*'Z'*/))) {
1259 // ch is a date-time pattern character
1260 prevCh = ch;
1261 ++count;
1262 }
1263 }
1264 // check last pattern char, distinguish
1265 // "dd MM" ( no repetition ),
1266 // "d-d"(last char repeated ), and
1267 // "d-d MM" ( repetition found )
1268 if ( count > 0 && foundRepetition == FALSE ) {
1269 if ( patternRepeated[(int)(prevCh - PATTERN_CHAR_BASE)] == FALSE ) {
1270 count = 0;
1271 }
1272 }
1273 return (i - count);
1274 }
1278 UnicodeString&
1279 DateIntervalFormat::fallbackFormat(Calendar& fromCalendar,
1280 Calendar& toCalendar,
1281 UnicodeString& appendTo,
1282 FieldPosition& pos,
1283 UErrorCode& status) const {
1284 if ( U_FAILURE(status) ) {
1285 return appendTo;
1286 }
1287 // the fall back
1288 // no need delete earlierDate and laterDate since they are adopted
1289 UnicodeString* earlierDate = new UnicodeString();
1290 *earlierDate = fDateFormat->format(fromCalendar, *earlierDate, pos);
1291 UnicodeString* laterDate = new UnicodeString();
1292 *laterDate = fDateFormat->format(toCalendar, *laterDate, pos);
1293 UnicodeString fallbackPattern;
1294 fInfo->getFallbackIntervalPattern(fallbackPattern);
1295 Formattable fmtArray[2];
1296 fmtArray[0].adoptString(earlierDate);
1297 fmtArray[1].adoptString(laterDate);
1299 UnicodeString fallback;
1300 MessageFormat::format(fallbackPattern, fmtArray, 2, fallback, status);
1301 if ( U_SUCCESS(status) ) {
1302 appendTo.append(fallback);
1303 }
1304 return appendTo;
1305 }
1310 UBool U_EXPORT2
1311 DateIntervalFormat::fieldExistsInSkeleton(UCalendarDateFields field,
1312 const UnicodeString& skeleton)
1313 {
1314 const UChar fieldChar = fgCalendarFieldToPatternLetter[field];
1315 return ( (skeleton.indexOf(fieldChar) == -1)?FALSE:TRUE ) ;
1316 }
1320 void U_EXPORT2
1321 DateIntervalFormat::adjustFieldWidth(const UnicodeString& inputSkeleton,
1322 const UnicodeString& bestMatchSkeleton,
1323 const UnicodeString& bestIntervalPattern,
1324 int8_t differenceInfo,
1325 UnicodeString& adjustedPtn) {
1326 adjustedPtn = bestIntervalPattern;
1327 int32_t inputSkeletonFieldWidth[] =
1328 {
1329 // A B C D E F G H I J K L M N O
1330 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
1331 // P Q R S T U V W X Y Z
1332 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
1333 // a b c d e f g h i j k l m n o
1334 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
1335 // p q r s t u v w x y z
1336 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
1337 };
1339 int32_t bestMatchSkeletonFieldWidth[] =
1340 {
1341 // A B C D E F G H I J K L M N O
1342 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
1343 // P Q R S T U V W X Y Z
1344 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
1345 // a b c d e f g h i j k l m n o
1346 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
1347 // p q r s t u v w x y z
1348 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
1349 };
1351 DateIntervalInfo::parseSkeleton(inputSkeleton, inputSkeletonFieldWidth);
1352 DateIntervalInfo::parseSkeleton(bestMatchSkeleton, bestMatchSkeletonFieldWidth);
1353 if ( differenceInfo == 2 ) {
1354 adjustedPtn.findAndReplace(UnicodeString((UChar)0x76 /* v */),
1355 UnicodeString((UChar)0x7a /* z */));
1356 }
1358 UBool inQuote = false;
1359 UChar prevCh = 0;
1360 int32_t count = 0;
1362 const int8_t PATTERN_CHAR_BASE = 0x41;
1364 // loop through the pattern string character by character
1365 int32_t adjustedPtnLength = adjustedPtn.length();
1366 int32_t i;
1367 for (i = 0; i < adjustedPtnLength; ++i) {
1368 UChar ch = adjustedPtn.charAt(i);
1369 if (ch != prevCh && count > 0) {
1370 // check the repeativeness of pattern letter
1371 UChar skeletonChar = prevCh;
1372 if ( skeletonChar == CAP_L ) {
1373 // there is no "L" (always be "M") in skeleton,
1374 // but there is "L" in pattern.
1375 // for skeleton "M+", the pattern might be "...L..."
1376 skeletonChar = CAP_M;
1377 }
1378 int32_t fieldCount = bestMatchSkeletonFieldWidth[(int)(skeletonChar - PATTERN_CHAR_BASE)];
1379 int32_t inputFieldCount = inputSkeletonFieldWidth[(int)(skeletonChar - PATTERN_CHAR_BASE)];
1380 if ( fieldCount == count && inputFieldCount > fieldCount ) {
1381 count = inputFieldCount - fieldCount;
1382 int32_t j;
1383 for ( j = 0; j < count; ++j ) {
1384 adjustedPtn.insert(i, prevCh);
1385 }
1386 i += count;
1387 adjustedPtnLength += count;
1388 }
1389 count = 0;
1390 }
1391 if (ch == '\'') {
1392 // Consecutive single quotes are a single quote literal,
1393 // either outside of quotes or between quotes
1394 if ((i+1) < adjustedPtn.length() && adjustedPtn.charAt(i+1) == '\'') {
1395 ++i;
1396 } else {
1397 inQuote = ! inQuote;
1398 }
1399 }
1400 else if ( ! inQuote && ((ch >= 0x0061 /*'a'*/ && ch <= 0x007A /*'z'*/)
1401 || (ch >= 0x0041 /*'A'*/ && ch <= 0x005A /*'Z'*/))) {
1402 // ch is a date-time pattern character
1403 prevCh = ch;
1404 ++count;
1405 }
1406 }
1407 if ( count > 0 ) {
1408 // last item
1409 // check the repeativeness of pattern letter
1410 UChar skeletonChar = prevCh;
1411 if ( skeletonChar == CAP_L ) {
1412 // there is no "L" (always be "M") in skeleton,
1413 // but there is "L" in pattern.
1414 // for skeleton "M+", the pattern might be "...L..."
1415 skeletonChar = CAP_M;
1416 }
1417 int32_t fieldCount = bestMatchSkeletonFieldWidth[(int)(skeletonChar - PATTERN_CHAR_BASE)];
1418 int32_t inputFieldCount = inputSkeletonFieldWidth[(int)(skeletonChar - PATTERN_CHAR_BASE)];
1419 if ( fieldCount == count && inputFieldCount > fieldCount ) {
1420 count = inputFieldCount - fieldCount;
1421 int32_t j;
1422 for ( j = 0; j < count; ++j ) {
1423 adjustedPtn.append(prevCh);
1424 }
1425 }
1426 }
1427 }
1431 void
1432 DateIntervalFormat::concatSingleDate2TimeInterval(const UChar* format,
1433 int32_t formatLen,
1434 const UnicodeString& datePattern,
1435 UCalendarDateFields field,
1436 UErrorCode& status) {
1437 // following should not set wrong status
1438 int32_t itvPtnIndex = DateIntervalInfo::calendarFieldToIntervalIndex(field,
1439 status);
1440 if ( U_FAILURE(status) ) {
1441 return;
1442 }
1443 PatternInfo& timeItvPtnInfo = fIntervalPatterns[itvPtnIndex];
1444 if ( !timeItvPtnInfo.firstPart.isEmpty() ) {
1445 // UnicodeString allocated here is adopted, so no need to delete
1446 UnicodeString* timeIntervalPattern = new UnicodeString(timeItvPtnInfo.firstPart);
1447 timeIntervalPattern->append(timeItvPtnInfo.secondPart);
1448 UnicodeString* dateStr = new UnicodeString(datePattern);
1449 Formattable fmtArray[2];
1450 fmtArray[0].adoptString(timeIntervalPattern);
1451 fmtArray[1].adoptString(dateStr);
1452 UnicodeString combinedPattern;
1453 MessageFormat::format(UnicodeString(TRUE, format, formatLen),
1454 fmtArray, 2, combinedPattern, status);
1455 if ( U_FAILURE(status) ) {
1456 return;
1457 }
1458 setIntervalPattern(field, combinedPattern, timeItvPtnInfo.laterDateFirst);
1459 }
1460 // else: fall back
1461 // it should not happen if the interval format defined is valid
1462 }
1466 const UChar
1467 DateIntervalFormat::fgCalendarFieldToPatternLetter[] =
1468 {
1469 /*GyM*/ CAP_G, LOW_Y, CAP_M,
1470 /*wWd*/ LOW_W, CAP_W, LOW_D,
1471 /*DEF*/ CAP_D, CAP_E, CAP_F,
1472 /*ahH*/ LOW_A, LOW_H, CAP_H,
1473 /*m..*/ LOW_M,
1474 };
1477 U_NAMESPACE_END
1479 #endif
