| // © 2016 and later: Unicode, Inc. and others. |
| // License & terms of use: http://www.unicode.org/copyright.html |
| /* |
| ******************************************************************************* |
| * Copyright (C) 2007-2016, International Business Machines Corporation and |
| * others. All Rights Reserved. |
| ******************************************************************************* |
| */ |
| |
| #include "unicode/utypes.h" |
| |
| #if !UCONFIG_NO_FORMATTING |
| |
| #include <stdlib.h> |
| |
| #include "unicode/datefmt.h" |
| #include "unicode/reldatefmt.h" |
| #include "unicode/simpleformatter.h" |
| #include "unicode/smpdtfmt.h" |
| #include "unicode/udisplaycontext.h" |
| #include "unicode/uchar.h" |
| #include "unicode/brkiter.h" |
| #include "unicode/ucasemap.h" |
| #include "reldtfmt.h" |
| #include "cmemory.h" |
| #include "uresimp.h" |
| |
| U_NAMESPACE_BEGIN |
| |
| |
| /** |
| * An array of URelativeString structs is used to store the resource data loaded out of the bundle. |
| */ |
| struct URelativeString { |
| int32_t offset; /** offset of this item, such as, the relative date **/ |
| int32_t len; /** length of the string **/ |
| const UChar* string; /** string, or NULL if not set **/ |
| }; |
| |
| UOBJECT_DEFINE_RTTI_IMPLEMENTATION(RelativeDateFormat) |
| |
| RelativeDateFormat::RelativeDateFormat(const RelativeDateFormat& other) : |
| DateFormat(other), fDateTimeFormatter(NULL), fDatePattern(other.fDatePattern), |
| fTimePattern(other.fTimePattern), fCombinedFormat(NULL), |
| fDateStyle(other.fDateStyle), fLocale(other.fLocale), |
| fDatesLen(other.fDatesLen), fDates(NULL), |
| fCombinedHasDateAtStart(other.fCombinedHasDateAtStart), |
| fCapitalizationInfoSet(other.fCapitalizationInfoSet), |
| fCapitalizationOfRelativeUnitsForUIListMenu(other.fCapitalizationOfRelativeUnitsForUIListMenu), |
| fCapitalizationOfRelativeUnitsForStandAlone(other.fCapitalizationOfRelativeUnitsForStandAlone), |
| fCapitalizationBrkIter(NULL) |
| { |
| if(other.fDateTimeFormatter != NULL) { |
| fDateTimeFormatter = other.fDateTimeFormatter->clone(); |
| } |
| if(other.fCombinedFormat != NULL) { |
| fCombinedFormat = new SimpleFormatter(*other.fCombinedFormat); |
| } |
| if (fDatesLen > 0) { |
| fDates = (URelativeString*) uprv_malloc(sizeof(fDates[0])*(size_t)fDatesLen); |
| uprv_memcpy(fDates, other.fDates, sizeof(fDates[0])*(size_t)fDatesLen); |
| } |
| #if !UCONFIG_NO_BREAK_ITERATION |
| if (other.fCapitalizationBrkIter != NULL) { |
| fCapitalizationBrkIter = (other.fCapitalizationBrkIter)->clone(); |
| } |
| #endif |
| } |
| |
| RelativeDateFormat::RelativeDateFormat( UDateFormatStyle timeStyle, UDateFormatStyle dateStyle, |
| const Locale& locale, UErrorCode& status) : |
| DateFormat(), fDateTimeFormatter(NULL), fDatePattern(), fTimePattern(), fCombinedFormat(NULL), |
| fDateStyle(dateStyle), fLocale(locale), fDatesLen(0), fDates(NULL), |
| fCombinedHasDateAtStart(FALSE), fCapitalizationInfoSet(FALSE), |
| fCapitalizationOfRelativeUnitsForUIListMenu(FALSE), fCapitalizationOfRelativeUnitsForStandAlone(FALSE), |
| fCapitalizationBrkIter(NULL) |
| { |
| if(U_FAILURE(status) ) { |
| return; |
| } |
| |
| if (timeStyle < UDAT_NONE || timeStyle > UDAT_SHORT) { |
| // don't support other time styles (e.g. relative styles), for now |
| status = U_ILLEGAL_ARGUMENT_ERROR; |
| return; |
| } |
| UDateFormatStyle baseDateStyle = (dateStyle > UDAT_SHORT)? (UDateFormatStyle)(dateStyle & ~UDAT_RELATIVE): dateStyle; |
| DateFormat * df; |
| // Get fDateTimeFormatter from either date or time style (does not matter, we will override the pattern). |
| // We do need to get separate patterns for the date & time styles. |
| if (baseDateStyle != UDAT_NONE) { |
| df = createDateInstance((EStyle)baseDateStyle, locale); |
| fDateTimeFormatter=dynamic_cast<SimpleDateFormat *>(df); |
| if (fDateTimeFormatter == NULL) { |
| status = U_UNSUPPORTED_ERROR; |
| return; |
| } |
| fDateTimeFormatter->toPattern(fDatePattern); |
| if (timeStyle != UDAT_NONE) { |
| df = createTimeInstance((EStyle)timeStyle, locale); |
| SimpleDateFormat *sdf = dynamic_cast<SimpleDateFormat *>(df); |
| if (sdf != NULL) { |
| sdf->toPattern(fTimePattern); |
| delete sdf; |
| } |
| } |
| } else { |
| // does not matter whether timeStyle is UDAT_NONE, we need something for fDateTimeFormatter |
| df = createTimeInstance((EStyle)timeStyle, locale); |
| fDateTimeFormatter=dynamic_cast<SimpleDateFormat *>(df); |
| if (fDateTimeFormatter == NULL) { |
| status = U_UNSUPPORTED_ERROR; |
| delete df; |
| return; |
| } |
| fDateTimeFormatter->toPattern(fTimePattern); |
| } |
| |
| // Initialize the parent fCalendar, so that parse() works correctly. |
| initializeCalendar(NULL, locale, status); |
| loadDates(status); |
| } |
| |
| RelativeDateFormat::~RelativeDateFormat() { |
| delete fDateTimeFormatter; |
| delete fCombinedFormat; |
| uprv_free(fDates); |
| #if !UCONFIG_NO_BREAK_ITERATION |
| delete fCapitalizationBrkIter; |
| #endif |
| } |
| |
| |
| RelativeDateFormat* RelativeDateFormat::clone() const { |
| return new RelativeDateFormat(*this); |
| } |
| |
| UBool RelativeDateFormat::operator==(const Format& other) const { |
| if(DateFormat::operator==(other)) { |
| // The DateFormat::operator== check for fCapitalizationContext equality above |
| // is sufficient to check equality of all derived context-related data. |
| // DateFormat::operator== guarantees following cast is safe |
| RelativeDateFormat* that = (RelativeDateFormat*)&other; |
| return (fDateStyle==that->fDateStyle && |
| fDatePattern==that->fDatePattern && |
| fTimePattern==that->fTimePattern && |
| fLocale==that->fLocale ); |
| } |
| return FALSE; |
| } |
| |
| static const UChar APOSTROPHE = (UChar)0x0027; |
| |
| UnicodeString& RelativeDateFormat::format( Calendar& cal, |
| UnicodeString& appendTo, |
| FieldPosition& pos) const { |
| |
| UErrorCode status = U_ZERO_ERROR; |
| UnicodeString relativeDayString; |
| UDisplayContext capitalizationContext = getContext(UDISPCTX_TYPE_CAPITALIZATION, status); |
| |
| // calculate the difference, in days, between 'cal' and now. |
| int dayDiff = dayDifference(cal, status); |
| |
| // look up string |
| int32_t len = 0; |
| const UChar *theString = getStringForDay(dayDiff, len, status); |
| if(U_SUCCESS(status) && (theString!=NULL)) { |
| // found a relative string |
| relativeDayString.setTo(theString, len); |
| } |
| |
| if ( relativeDayString.length() > 0 && !fDatePattern.isEmpty() && |
| (fTimePattern.isEmpty() || fCombinedFormat == NULL || fCombinedHasDateAtStart)) { |
| #if !UCONFIG_NO_BREAK_ITERATION |
| // capitalize relativeDayString according to context for relative, set formatter no context |
| if ( u_islower(relativeDayString.char32At(0)) && fCapitalizationBrkIter!= NULL && |
| ( capitalizationContext==UDISPCTX_CAPITALIZATION_FOR_BEGINNING_OF_SENTENCE || |
| (capitalizationContext==UDISPCTX_CAPITALIZATION_FOR_UI_LIST_OR_MENU && fCapitalizationOfRelativeUnitsForUIListMenu) || |
| (capitalizationContext==UDISPCTX_CAPITALIZATION_FOR_STANDALONE && fCapitalizationOfRelativeUnitsForStandAlone) ) ) { |
| // titlecase first word of relativeDayString |
| relativeDayString.toTitle(fCapitalizationBrkIter, fLocale, U_TITLECASE_NO_LOWERCASE | U_TITLECASE_NO_BREAK_ADJUSTMENT); |
| } |
| #endif |
| fDateTimeFormatter->setContext(UDISPCTX_CAPITALIZATION_NONE, status); |
| } else { |
| // set our context for the formatter |
| fDateTimeFormatter->setContext(capitalizationContext, status); |
| } |
| |
| if (fDatePattern.isEmpty()) { |
| fDateTimeFormatter->applyPattern(fTimePattern); |
| fDateTimeFormatter->format(cal,appendTo,pos); |
| } else if (fTimePattern.isEmpty() || fCombinedFormat == NULL) { |
| if (relativeDayString.length() > 0) { |
| appendTo.append(relativeDayString); |
| } else { |
| fDateTimeFormatter->applyPattern(fDatePattern); |
| fDateTimeFormatter->format(cal,appendTo,pos); |
| } |
| } else { |
| UnicodeString datePattern; |
| if (relativeDayString.length() > 0) { |
| // Need to quote the relativeDayString to make it a legal date pattern |
| relativeDayString.findAndReplace(UNICODE_STRING("'", 1), UNICODE_STRING("''", 2)); // double any existing APOSTROPHE |
| relativeDayString.insert(0, APOSTROPHE); // add APOSTROPHE at beginning... |
| relativeDayString.append(APOSTROPHE); // and at end |
| datePattern.setTo(relativeDayString); |
| } else { |
| datePattern.setTo(fDatePattern); |
| } |
| UnicodeString combinedPattern; |
| fCombinedFormat->format(fTimePattern, datePattern, combinedPattern, status); |
| fDateTimeFormatter->applyPattern(combinedPattern); |
| fDateTimeFormatter->format(cal,appendTo,pos); |
| } |
| |
| return appendTo; |
| } |
| |
| |
| |
| UnicodeString& |
| RelativeDateFormat::format(const Formattable& obj, |
| UnicodeString& appendTo, |
| FieldPosition& pos, |
| UErrorCode& status) const |
| { |
| // this is just here to get around the hiding problem |
| // (the previous format() override would hide the version of |
| // format() on DateFormat that this function correspond to, so we |
| // have to redefine it here) |
| return DateFormat::format(obj, appendTo, pos, status); |
| } |
| |
| |
| void RelativeDateFormat::parse( const UnicodeString& text, |
| Calendar& cal, |
| ParsePosition& pos) const { |
| |
| int32_t startIndex = pos.getIndex(); |
| if (fDatePattern.isEmpty()) { |
| // no date pattern, try parsing as time |
| fDateTimeFormatter->applyPattern(fTimePattern); |
| fDateTimeFormatter->parse(text,cal,pos); |
| } else if (fTimePattern.isEmpty() || fCombinedFormat == NULL) { |
| // no time pattern or way to combine, try parsing as date |
| // first check whether text matches a relativeDayString |
| UBool matchedRelative = FALSE; |
| for (int n=0; n < fDatesLen && !matchedRelative; n++) { |
| if (fDates[n].string != NULL && |
| text.compare(startIndex, fDates[n].len, fDates[n].string) == 0) { |
| // it matched, handle the relative day string |
| UErrorCode status = U_ZERO_ERROR; |
| matchedRelative = TRUE; |
| |
| // Set the calendar to now+offset |
| cal.setTime(Calendar::getNow(),status); |
| cal.add(UCAL_DATE,fDates[n].offset, status); |
| |
| if(U_FAILURE(status)) { |
| // failure in setting calendar field, set offset to beginning of rel day string |
| pos.setErrorIndex(startIndex); |
| } else { |
| pos.setIndex(startIndex + fDates[n].len); |
| } |
| } |
| } |
| if (!matchedRelative) { |
| // just parse as normal date |
| fDateTimeFormatter->applyPattern(fDatePattern); |
| fDateTimeFormatter->parse(text,cal,pos); |
| } |
| } else { |
| // Here we replace any relativeDayString in text with the equivalent date |
| // formatted per fDatePattern, then parse text normally using the combined pattern. |
| UnicodeString modifiedText(text); |
| FieldPosition fPos; |
| int32_t dateStart = 0, origDateLen = 0, modDateLen = 0; |
| UErrorCode status = U_ZERO_ERROR; |
| for (int n=0; n < fDatesLen; n++) { |
| int32_t relativeStringOffset; |
| if (fDates[n].string != NULL && |
| (relativeStringOffset = modifiedText.indexOf(fDates[n].string, fDates[n].len, startIndex)) >= startIndex) { |
| // it matched, replace the relative date with a real one for parsing |
| UnicodeString dateString; |
| Calendar * tempCal = cal.clone(); |
| |
| // Set the calendar to now+offset |
| tempCal->setTime(Calendar::getNow(),status); |
| tempCal->add(UCAL_DATE,fDates[n].offset, status); |
| if(U_FAILURE(status)) { |
| pos.setErrorIndex(startIndex); |
| delete tempCal; |
| return; |
| } |
| |
| fDateTimeFormatter->applyPattern(fDatePattern); |
| fDateTimeFormatter->format(*tempCal, dateString, fPos); |
| dateStart = relativeStringOffset; |
| origDateLen = fDates[n].len; |
| modDateLen = dateString.length(); |
| modifiedText.replace(dateStart, origDateLen, dateString); |
| delete tempCal; |
| break; |
| } |
| } |
| UnicodeString combinedPattern; |
| fCombinedFormat->format(fTimePattern, fDatePattern, combinedPattern, status); |
| fDateTimeFormatter->applyPattern(combinedPattern); |
| fDateTimeFormatter->parse(modifiedText,cal,pos); |
| |
| // Adjust offsets |
| UBool noError = (pos.getErrorIndex() < 0); |
| int32_t offset = (noError)? pos.getIndex(): pos.getErrorIndex(); |
| if (offset >= dateStart + modDateLen) { |
| // offset at or after the end of the replaced text, |
| // correct by the difference between original and replacement |
| offset -= (modDateLen - origDateLen); |
| } else if (offset >= dateStart) { |
| // offset in the replaced text, set it to the beginning of that text |
| // (i.e. the beginning of the relative day string) |
| offset = dateStart; |
| } |
| if (noError) { |
| pos.setIndex(offset); |
| } else { |
| pos.setErrorIndex(offset); |
| } |
| } |
| } |
| |
| UDate |
| RelativeDateFormat::parse( const UnicodeString& text, |
| ParsePosition& pos) const { |
| // redefined here because the other parse() function hides this function's |
| // cunterpart on DateFormat |
| return DateFormat::parse(text, pos); |
| } |
| |
| UDate |
| RelativeDateFormat::parse(const UnicodeString& text, UErrorCode& status) const |
| { |
| // redefined here because the other parse() function hides this function's |
| // counterpart on DateFormat |
| return DateFormat::parse(text, status); |
| } |
| |
| |
| const UChar *RelativeDateFormat::getStringForDay(int32_t day, int32_t &len, UErrorCode &status) const { |
| if(U_FAILURE(status)) { |
| return NULL; |
| } |
| |
| // Is it inside the resource bundle's range? |
| int n = day + UDAT_DIRECTION_THIS; |
| if (n >= 0 && n < fDatesLen) { |
| if (fDates[n].offset == day && fDates[n].string != NULL) { |
| len = fDates[n].len; |
| return fDates[n].string; |
| } |
| } |
| return NULL; // not found. |
| } |
| |
| UnicodeString& |
| RelativeDateFormat::toPattern(UnicodeString& result, UErrorCode& status) const |
| { |
| if (!U_FAILURE(status)) { |
| result.remove(); |
| if (fDatePattern.isEmpty()) { |
| result.setTo(fTimePattern); |
| } else if (fTimePattern.isEmpty() || fCombinedFormat == NULL) { |
| result.setTo(fDatePattern); |
| } else { |
| fCombinedFormat->format(fTimePattern, fDatePattern, result, status); |
| } |
| } |
| return result; |
| } |
| |
| UnicodeString& |
| RelativeDateFormat::toPatternDate(UnicodeString& result, UErrorCode& status) const |
| { |
| if (!U_FAILURE(status)) { |
| result.remove(); |
| result.setTo(fDatePattern); |
| } |
| return result; |
| } |
| |
| UnicodeString& |
| RelativeDateFormat::toPatternTime(UnicodeString& result, UErrorCode& status) const |
| { |
| if (!U_FAILURE(status)) { |
| result.remove(); |
| result.setTo(fTimePattern); |
| } |
| return result; |
| } |
| |
| void |
| RelativeDateFormat::applyPatterns(const UnicodeString& datePattern, const UnicodeString& timePattern, UErrorCode &status) |
| { |
| if (!U_FAILURE(status)) { |
| fDatePattern.setTo(datePattern); |
| fTimePattern.setTo(timePattern); |
| } |
| } |
| |
| const DateFormatSymbols* |
| RelativeDateFormat::getDateFormatSymbols() const |
| { |
| return fDateTimeFormatter->getDateFormatSymbols(); |
| } |
| |
| // override the DateFormat implementation in order to |
| // lazily initialize relevant items |
| void |
| RelativeDateFormat::setContext(UDisplayContext value, UErrorCode& status) |
| { |
| DateFormat::setContext(value, status); |
| if (U_SUCCESS(status)) { |
| if (!fCapitalizationInfoSet && |
| (value==UDISPCTX_CAPITALIZATION_FOR_UI_LIST_OR_MENU || value==UDISPCTX_CAPITALIZATION_FOR_STANDALONE)) { |
| initCapitalizationContextInfo(fLocale); |
| fCapitalizationInfoSet = TRUE; |
| } |
| #if !UCONFIG_NO_BREAK_ITERATION |
| if ( fCapitalizationBrkIter == NULL && (value==UDISPCTX_CAPITALIZATION_FOR_BEGINNING_OF_SENTENCE || |
| (value==UDISPCTX_CAPITALIZATION_FOR_UI_LIST_OR_MENU && fCapitalizationOfRelativeUnitsForUIListMenu) || |
| (value==UDISPCTX_CAPITALIZATION_FOR_STANDALONE && fCapitalizationOfRelativeUnitsForStandAlone)) ) { |
| status = U_ZERO_ERROR; |
| fCapitalizationBrkIter = BreakIterator::createSentenceInstance(fLocale, status); |
| if (U_FAILURE(status)) { |
| delete fCapitalizationBrkIter; |
| fCapitalizationBrkIter = NULL; |
| } |
| } |
| #endif |
| } |
| } |
| |
| void |
| RelativeDateFormat::initCapitalizationContextInfo(const Locale& thelocale) |
| { |
| #if !UCONFIG_NO_BREAK_ITERATION |
| const char * localeID = (thelocale != NULL)? thelocale.getBaseName(): NULL; |
| UErrorCode status = U_ZERO_ERROR; |
| LocalUResourceBundlePointer rb(ures_open(NULL, localeID, &status)); |
| ures_getByKeyWithFallback(rb.getAlias(), |
| "contextTransforms/relative", |
| rb.getAlias(), &status); |
| if (U_SUCCESS(status) && rb != NULL) { |
| int32_t len = 0; |
| const int32_t * intVector = ures_getIntVector(rb.getAlias(), |
| &len, &status); |
| if (U_SUCCESS(status) && intVector != NULL && len >= 2) { |
| fCapitalizationOfRelativeUnitsForUIListMenu = static_cast<UBool>(intVector[0]); |
| fCapitalizationOfRelativeUnitsForStandAlone = static_cast<UBool>(intVector[1]); |
| } |
| } |
| #endif |
| } |
| |
| namespace { |
| |
| /** |
| * Sink for getting data from fields/day/relative data. |
| * For loading relative day names, e.g., "yesterday", "today". |
| */ |
| |
| struct RelDateFmtDataSink : public ResourceSink { |
| URelativeString *fDatesPtr; |
| int32_t fDatesLen; |
| |
| RelDateFmtDataSink(URelativeString* fDates, int32_t len) : fDatesPtr(fDates), fDatesLen(len) { |
| for (int32_t i = 0; i < fDatesLen; ++i) { |
| fDatesPtr[i].offset = 0; |
| fDatesPtr[i].string = NULL; |
| fDatesPtr[i].len = -1; |
| } |
| } |
| |
| virtual ~RelDateFmtDataSink(); |
| |
| virtual void put(const char *key, ResourceValue &value, |
| UBool /*noFallback*/, UErrorCode &errorCode) { |
| ResourceTable relDayTable = value.getTable(errorCode); |
| int32_t n = 0; |
| int32_t len = 0; |
| for (int32_t i = 0; relDayTable.getKeyAndValue(i, key, value); ++i) { |
| // Find the relative offset. |
| int32_t offset = atoi(key); |
| |
| // Put in the proper spot, but don't override existing data. |
| n = offset + UDAT_DIRECTION_THIS; // Converts to index in UDAT_R |
| if (n < fDatesLen && fDatesPtr[n].string == NULL) { |
| // Not found and n is an empty slot. |
| fDatesPtr[n].offset = offset; |
| fDatesPtr[n].string = value.getString(len, errorCode); |
| fDatesPtr[n].len = len; |
| } |
| } |
| } |
| }; |
| |
| |
| // Virtual destructors must be defined out of line. |
| RelDateFmtDataSink::~RelDateFmtDataSink() {} |
| |
| } // Namespace |
| |
| |
| static const UChar patItem1[] = {0x7B,0x31,0x7D}; // "{1}" |
| static const int32_t patItem1Len = 3; |
| |
| void RelativeDateFormat::loadDates(UErrorCode &status) { |
| UResourceBundle *rb = ures_open(NULL, fLocale.getBaseName(), &status); |
| LocalUResourceBundlePointer dateTimePatterns( |
| ures_getByKeyWithFallback(rb, |
| "calendar/gregorian/DateTimePatterns", |
| (UResourceBundle*)NULL, &status)); |
| if(U_SUCCESS(status)) { |
| int32_t patternsSize = ures_getSize(dateTimePatterns.getAlias()); |
| if (patternsSize > kDateTime) { |
| int32_t resStrLen = 0; |
| int32_t glueIndex = kDateTime; |
| if (patternsSize >= (kDateTimeOffset + kShort + 1)) { |
| int32_t offsetIncrement = (fDateStyle & ~kRelative); // Remove relative bit. |
| if (offsetIncrement >= (int32_t)kFull && |
| offsetIncrement <= (int32_t)kShortRelative) { |
| glueIndex = kDateTimeOffset + offsetIncrement; |
| } |
| } |
| |
| const UChar *resStr = ures_getStringByIndex(dateTimePatterns.getAlias(), glueIndex, &resStrLen, &status); |
| if (U_SUCCESS(status) && resStrLen >= patItem1Len && u_strncmp(resStr,patItem1,patItem1Len)==0) { |
| fCombinedHasDateAtStart = TRUE; |
| } |
| fCombinedFormat = new SimpleFormatter(UnicodeString(TRUE, resStr, resStrLen), 2, 2, status); |
| } |
| } |
| |
| // Data loading for relative names, e.g., "yesterday", "today", "tomorrow". |
| fDatesLen = UDAT_DIRECTION_COUNT; // Maximum defined by data. |
| fDates = (URelativeString*) uprv_malloc(sizeof(fDates[0])*fDatesLen); |
| |
| RelDateFmtDataSink sink(fDates, fDatesLen); |
| ures_getAllItemsWithFallback(rb, "fields/day/relative", sink, status); |
| |
| ures_close(rb); |
| |
| if(U_FAILURE(status)) { |
| fDatesLen=0; |
| return; |
| } |
| } |
| |
| //---------------------------------------------------------------------- |
| |
| // this should to be in DateFormat, instead it was copied from SimpleDateFormat. |
| |
| Calendar* |
| RelativeDateFormat::initializeCalendar(TimeZone* adoptZone, const Locale& locale, UErrorCode& status) |
| { |
| if(!U_FAILURE(status)) { |
| fCalendar = Calendar::createInstance(adoptZone?adoptZone:TimeZone::createDefault(), locale, status); |
| } |
| if (U_SUCCESS(status) && fCalendar == NULL) { |
| status = U_MEMORY_ALLOCATION_ERROR; |
| } |
| return fCalendar; |
| } |
| |
| int32_t RelativeDateFormat::dayDifference(Calendar &cal, UErrorCode &status) { |
| if(U_FAILURE(status)) { |
| return 0; |
| } |
| // TODO: Cache the nowCal to avoid heap allocs? Would be difficult, don't know the calendar type |
| Calendar *nowCal = cal.clone(); |
| nowCal->setTime(Calendar::getNow(), status); |
| |
| // For the day difference, we are interested in the difference in the (modified) julian day number |
| // which is midnight to midnight. Using fieldDifference() is NOT correct here, because |
| // 6pm Jan 4th to 10am Jan 5th should be considered "tomorrow". |
| int32_t dayDiff = cal.get(UCAL_JULIAN_DAY, status) - nowCal->get(UCAL_JULIAN_DAY, status); |
| |
| delete nowCal; |
| return dayDiff; |
| } |
| |
| U_NAMESPACE_END |
| |
| #endif /* !UCONFIG_NO_FORMATTING */ |
