| /* |
| ******************************************************************************* |
| * Copyright (C) 2007-2010, International Business Machines Corporation and |
| * others. All Rights Reserved. |
| ******************************************************************************* |
| */ |
| |
| #include "unicode/utypes.h" |
| |
| #if !UCONFIG_NO_FORMATTING |
| |
| //#define DEBUG_RELDTFMT |
| |
| #include <stdio.h> |
| #include <stdlib.h> |
| |
| #include "reldtfmt.h" |
| #include "unicode/msgfmt.h" |
| #include "unicode/smpdtfmt.h" |
| |
| #include "gregoimp.h" // for CalendarData |
| #include "cmemory.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 **/ |
| }; |
| |
| static const char DT_DateTimePatternsTag[]="DateTimePatterns"; |
| |
| |
| UOBJECT_DEFINE_RTTI_IMPLEMENTATION(RelativeDateFormat) |
| |
| RelativeDateFormat::RelativeDateFormat(const RelativeDateFormat& other) : |
| DateFormat(other), fDateFormat(NULL), fTimeFormat(NULL), fCombinedFormat(NULL), |
| fDateStyle(other.fDateStyle), fTimeStyle(other.fTimeStyle), fLocale(other.fLocale), |
| fDayMin(other.fDayMin), fDayMax(other.fDayMax), |
| fDatesLen(other.fDatesLen), fDates(NULL) |
| { |
| if(other.fDateFormat != NULL) { |
| fDateFormat = (DateFormat*)other.fDateFormat->clone(); |
| } else { |
| fDateFormat = NULL; |
| } |
| if (fDatesLen > 0) { |
| fDates = (URelativeString*) uprv_malloc(sizeof(fDates[0])*fDatesLen); |
| uprv_memcpy(fDates, other.fDates, sizeof(fDates[0])*fDatesLen); |
| } |
| //fCalendar = other.fCalendar->clone(); |
| /* |
| if(other.fTimeFormat != NULL) { |
| fTimeFormat = (DateFormat*)other.fTimeFormat->clone(); |
| } else { |
| fTimeFormat = NULL; |
| } |
| */ |
| } |
| |
| RelativeDateFormat::RelativeDateFormat( UDateFormatStyle timeStyle, UDateFormatStyle dateStyle, const Locale& locale, UErrorCode& status) |
| : DateFormat(), fDateFormat(NULL), fTimeFormat(NULL), fCombinedFormat(NULL), |
| fDateStyle(dateStyle), fTimeStyle(timeStyle), fLocale(locale), fDatesLen(0), fDates(NULL) |
| { |
| if(U_FAILURE(status) ) { |
| return; |
| } |
| |
| if(fDateStyle != UDAT_NONE) { |
| EStyle newStyle = (EStyle)(fDateStyle & ~UDAT_RELATIVE); |
| // Create a DateFormat in the non-relative style requested. |
| fDateFormat = createDateInstance(newStyle, locale); |
| } |
| if(fTimeStyle >= UDAT_FULL && fTimeStyle <= UDAT_SHORT) { |
| fTimeFormat = createTimeInstance((EStyle)fTimeStyle, locale); |
| } else if(fTimeStyle != UDAT_NONE) { |
| // don't support other time styles (e.g. relative styles), for now |
| status = U_ILLEGAL_ARGUMENT_ERROR; |
| return; |
| } |
| |
| // Initialize the parent fCalendar, so that parse() works correctly. |
| initializeCalendar(NULL, locale, status); |
| loadDates(status); |
| } |
| |
| RelativeDateFormat::~RelativeDateFormat() { |
| delete fDateFormat; |
| delete fTimeFormat; |
| delete fCombinedFormat; |
| uprv_free(fDates); |
| } |
| |
| |
| Format* RelativeDateFormat::clone(void) const { |
| return new RelativeDateFormat(*this); |
| } |
| |
| UBool RelativeDateFormat::operator==(const Format& other) const { |
| if(DateFormat::operator==(other)) { |
| // DateFormat::operator== guarantees following cast is safe |
| RelativeDateFormat* that = (RelativeDateFormat*)&other; |
| return (fDateStyle==that->fDateStyle && |
| fTimeStyle==that->fTimeStyle && |
| fLocale==that->fLocale); |
| } |
| return FALSE; |
| } |
| |
| UnicodeString& RelativeDateFormat::format( Calendar& cal, |
| UnicodeString& appendTo, |
| FieldPosition& pos) const { |
| |
| UErrorCode status = U_ZERO_ERROR; |
| UChar emptyStr = 0; |
| UnicodeString dateString(&emptyStr); |
| |
| // 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 |
| dateString.setTo(theString, len); |
| } |
| |
| if(fTimeFormat == NULL || fCombinedFormat == 0) { |
| if (dateString.length() > 0) { |
| appendTo.append(dateString); |
| } else if(fDateFormat != NULL) { |
| fDateFormat->format(cal,appendTo,pos); |
| } |
| } else { |
| if (dateString.length() == 0 && fDateFormat != NULL) { |
| fDateFormat->format(cal,dateString,pos); |
| } |
| UnicodeString timeString(&emptyStr); |
| FieldPosition timepos = pos; |
| fTimeFormat->format(cal,timeString,timepos); |
| Formattable timeDateStrings[] = { timeString, dateString }; |
| fCombinedFormat->format(timeDateStrings, 2, appendTo, pos, status); // pos is ignored by this |
| int32_t offset; |
| if (pos.getEndIndex() > 0 && (offset = appendTo.indexOf(dateString)) >= 0) { |
| // pos.field was found in dateString, offset start & end based on final position of dateString |
| pos.setBeginIndex( pos.getBeginIndex() + offset ); |
| pos.setEndIndex( pos.getEndIndex() + offset ); |
| } else if (timepos.getEndIndex() > 0 && (offset = appendTo.indexOf(timeString)) >= 0) { |
| // pos.field was found in timeString, offset start & end based on final position of timeString |
| pos.setBeginIndex( timepos.getBeginIndex() + offset ); |
| pos.setEndIndex( timepos.getEndIndex() + offset ); |
| } |
| } |
| |
| 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 { |
| |
| // Can the fDateFormat parse it? |
| if(fDateFormat != NULL) { |
| ParsePosition aPos(pos); |
| fDateFormat->parse(text,cal,aPos); |
| if((aPos.getIndex() != pos.getIndex()) && |
| (aPos.getErrorIndex()==-1)) { |
| pos=aPos; // copy the sub parse |
| return; // parsed subfmt OK |
| } |
| } |
| |
| // Linear search the relative strings |
| for(int n=0;n<fDatesLen;n++) { |
| if(fDates[n].string != NULL && |
| (0==text.compare(pos.getIndex(), |
| fDates[n].len, |
| fDates[n].string))) { |
| UErrorCode status = U_ZERO_ERROR; |
| |
| // 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 fields |
| pos.setErrorIndex(pos.getIndex()+fDates[n].len); |
| } else { |
| pos.setIndex(pos.getIndex()+fDates[n].len); |
| } |
| return; |
| } |
| } |
| |
| // parse failed |
| } |
| |
| 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 outside the resource bundle's range? |
| if(day < fDayMin || day > fDayMax) { |
| return NULL; // don't have it. |
| } |
| |
| // Linear search the held strings |
| for(int n=0;n<fDatesLen;n++) { |
| if(fDates[n].offset == day) { |
| 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 (fTimeFormat == NULL || fCombinedFormat == 0) { |
| if (fDateFormat != NULL) { |
| UnicodeString datePattern; |
| this->toPatternDate(datePattern, status); |
| if (!U_FAILURE(status)) { |
| result.setTo(datePattern); |
| } |
| } |
| } else { |
| UnicodeString datePattern, timePattern; |
| this->toPatternDate(datePattern, status); |
| this->toPatternTime(timePattern, status); |
| if (!U_FAILURE(status)) { |
| Formattable timeDatePatterns[] = { timePattern, datePattern }; |
| FieldPosition pos; |
| fCombinedFormat->format(timeDatePatterns, 2, result, pos, status); |
| } |
| } |
| } |
| return result; |
| } |
| |
| UnicodeString& |
| RelativeDateFormat::toPatternDate(UnicodeString& result, UErrorCode& status) const |
| { |
| if (!U_FAILURE(status)) { |
| result.remove(); |
| if ( fDateFormat ) { |
| SimpleDateFormat* sdtfmt = dynamic_cast<SimpleDateFormat*>(fDateFormat); |
| if (sdtfmt != NULL) { |
| sdtfmt->toPattern(result); |
| } else { |
| status = U_UNSUPPORTED_ERROR; |
| } |
| } |
| } |
| return result; |
| } |
| |
| UnicodeString& |
| RelativeDateFormat::toPatternTime(UnicodeString& result, UErrorCode& status) const |
| { |
| if (!U_FAILURE(status)) { |
| result.remove(); |
| if ( fTimeFormat ) { |
| SimpleDateFormat* sdtfmt = dynamic_cast<SimpleDateFormat*>(fTimeFormat); |
| if (sdtfmt != NULL) { |
| sdtfmt->toPattern(result); |
| } else { |
| status = U_UNSUPPORTED_ERROR; |
| } |
| } |
| } |
| return result; |
| } |
| |
| void |
| RelativeDateFormat::applyPatterns(const UnicodeString& datePattern, const UnicodeString& timePattern, UErrorCode &status) |
| { |
| if (!U_FAILURE(status)) { |
| SimpleDateFormat* sdtfmt = NULL; |
| SimpleDateFormat* stmfmt = NULL; |
| if (fDateFormat && (sdtfmt = dynamic_cast<SimpleDateFormat*>(fDateFormat)) == NULL) { |
| status = U_UNSUPPORTED_ERROR; |
| return; |
| } |
| if (fTimeFormat && (stmfmt = dynamic_cast<SimpleDateFormat*>(fTimeFormat)) == NULL) { |
| status = U_UNSUPPORTED_ERROR; |
| return; |
| } |
| if ( fDateFormat ) { |
| sdtfmt->applyPattern(datePattern); |
| } |
| if ( fTimeFormat ) { |
| stmfmt->applyPattern(timePattern); |
| } |
| } |
| } |
| |
| void RelativeDateFormat::loadDates(UErrorCode &status) { |
| CalendarData calData(fLocale, "gregorian", status); |
| |
| UErrorCode tempStatus = status; |
| UResourceBundle *dateTimePatterns = calData.getByKey(DT_DateTimePatternsTag, tempStatus); |
| if(U_SUCCESS(tempStatus)) { |
| int32_t patternsSize = ures_getSize(dateTimePatterns); |
| if (patternsSize > kDateTime) { |
| int32_t resStrLen = 0; |
| |
| int32_t glueIndex = kDateTime; |
| if (patternsSize >= (DateFormat::kDateTimeOffset + DateFormat::kShort + 1)) { |
| // Get proper date time format |
| switch (fDateStyle) { |
| case kFullRelative: |
| case kFull: |
| glueIndex = kDateTimeOffset + kFull; |
| break; |
| case kLongRelative: |
| case kLong: |
| glueIndex = kDateTimeOffset + kLong; |
| break; |
| case kMediumRelative: |
| case kMedium: |
| glueIndex = kDateTimeOffset + kMedium; |
| break; |
| case kShortRelative: |
| case kShort: |
| glueIndex = kDateTimeOffset + kShort; |
| break; |
| default: |
| break; |
| } |
| } |
| |
| const UChar *resStr = ures_getStringByIndex(dateTimePatterns, glueIndex, &resStrLen, &tempStatus); |
| fCombinedFormat = new MessageFormat(UnicodeString(TRUE, resStr, resStrLen), fLocale, tempStatus); |
| } |
| } |
| |
| UResourceBundle *strings = calData.getByKey3("fields", "day", "relative", status); |
| // set up min/max |
| fDayMin=-1; |
| fDayMax=1; |
| |
| if(U_FAILURE(status)) { |
| fDatesLen=0; |
| return; |
| } |
| |
| fDatesLen = ures_getSize(strings); |
| fDates = (URelativeString*) uprv_malloc(sizeof(fDates[0])*fDatesLen); |
| |
| // Load in each item into the array... |
| int n = 0; |
| |
| UResourceBundle *subString = NULL; |
| |
| while(ures_hasNext(strings) && U_SUCCESS(status)) { // iterate over items |
| subString = ures_getNextResource(strings, subString, &status); |
| |
| if(U_FAILURE(status) || (subString==NULL)) break; |
| |
| // key = offset # |
| const char *key = ures_getKey(subString); |
| |
| // load the string and length |
| int32_t aLen; |
| const UChar* aString = ures_getString(subString, &aLen, &status); |
| |
| if(U_FAILURE(status) || aString == NULL) break; |
| |
| // calculate the offset |
| int32_t offset = atoi(key); |
| |
| // set min/max |
| if(offset < fDayMin) { |
| fDayMin = offset; |
| } |
| if(offset > fDayMax) { |
| fDayMax = offset; |
| } |
| |
| // copy the string pointer |
| fDates[n].offset = offset; |
| fDates[n].string = aString; |
| fDates[n].len = aLen; |
| |
| n++; |
| } |
| ures_close(subString); |
| |
| // the fDates[] array could be sorted here, for direct access. |
| } |
| |
| |
| // 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 |
| |
