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Diffstat (limited to 'intl/icu/source/i18n/dtitvfmt.cpp')
| -rw-r--r-- | intl/icu/source/i18n/dtitvfmt.cpp | 1909 |
1 files changed, 1909 insertions, 0 deletions
diff --git a/intl/icu/source/i18n/dtitvfmt.cpp b/intl/icu/source/i18n/dtitvfmt.cpp new file mode 100644 index 0000000000..6087014668 --- /dev/null +++ b/intl/icu/source/i18n/dtitvfmt.cpp @@ -0,0 +1,1909 @@ +// © 2016 and later: Unicode, Inc. and others. +// License & terms of use: http://www.unicode.org/copyright.html +/******************************************************************************* +* Copyright (C) 2008-2016, International Business Machines Corporation and +* others. All Rights Reserved. +******************************************************************************* +* +* File DTITVFMT.CPP +* +******************************************************************************* +*/ + +#include "utypeinfo.h" // for 'typeid' to work + +#include "unicode/dtitvfmt.h" + +#if !UCONFIG_NO_FORMATTING + +//TODO: put in compilation +//#define DTITVFMT_DEBUG 1 + +#include "unicode/calendar.h" +#include "unicode/dtptngen.h" +#include "unicode/dtitvinf.h" +#include "unicode/simpleformatter.h" +#include "unicode/udisplaycontext.h" +#include "cmemory.h" +#include "cstring.h" +#include "dtitv_impl.h" +#include "mutex.h" +#include "uresimp.h" +#include "formattedval_impl.h" + +#ifdef DTITVFMT_DEBUG +#include <iostream> +#endif + +U_NAMESPACE_BEGIN + + + +#ifdef DTITVFMT_DEBUG +#define PRINTMESG(msg) { std::cout << "(" << __FILE__ << ":" << __LINE__ << ") " << msg << "\n"; } +#endif + + +static const char16_t gDateFormatSkeleton[][11] = { +//yMMMMEEEEd +{LOW_Y, CAP_M, CAP_M, CAP_M, CAP_M, CAP_E, CAP_E, CAP_E, CAP_E, LOW_D, 0}, +//yMMMMd +{LOW_Y, CAP_M, CAP_M, CAP_M, CAP_M, LOW_D, 0}, +//yMMMd +{LOW_Y, CAP_M, CAP_M, CAP_M, LOW_D, 0}, +//yMd +{LOW_Y, CAP_M, LOW_D, 0} }; + + +static const char gCalendarTag[] = "calendar"; +static const char gGregorianTag[] = "gregorian"; +static const char gDateTimePatternsTag[] = "DateTimePatterns"; + + +// latestFirst: +static const char16_t gLaterFirstPrefix[] = {LOW_L, LOW_A, LOW_T, LOW_E, LOW_S,LOW_T, CAP_F, LOW_I, LOW_R, LOW_S, LOW_T, COLON}; + +// earliestFirst: +static const char16_t 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}; + + +class FormattedDateIntervalData : public FormattedValueFieldPositionIteratorImpl { +public: + FormattedDateIntervalData(UErrorCode& status) : FormattedValueFieldPositionIteratorImpl(5, status) {} + virtual ~FormattedDateIntervalData(); +}; + +FormattedDateIntervalData::~FormattedDateIntervalData() = default; + +UPRV_FORMATTED_VALUE_SUBCLASS_AUTO_IMPL(FormattedDateInterval) + + +UOBJECT_DEFINE_RTTI_IMPLEMENTATION(DateIntervalFormat) + +// Mutex, protects access to fDateFormat, fFromCalendar and fToCalendar. +// Needed because these data members are modified by const methods of DateIntervalFormat. + +static UMutex gFormatterMutex; + +DateIntervalFormat* U_EXPORT2 +DateIntervalFormat::createInstance(const UnicodeString& skeleton, + UErrorCode& status) { + return createInstance(skeleton, Locale::getDefault(), status); +} + + +DateIntervalFormat* U_EXPORT2 +DateIntervalFormat::createInstance(const UnicodeString& skeleton, + const Locale& locale, + UErrorCode& status) { +#ifdef DTITVFMT_DEBUG + char result[1000]; + char result_1[1000]; + char mesg[2000]; + skeleton.extract(0, skeleton.length(), result, "UTF-8"); + UnicodeString pat; + ((SimpleDateFormat*)dtfmt)->toPattern(pat); + pat.extract(0, pat.length(), result_1, "UTF-8"); + snprintf(mesg, sizeof(mesg), "skeleton: %s; pattern: %s\n", result, result_1); + PRINTMESG(mesg) +#endif + + DateIntervalInfo* dtitvinf = new DateIntervalInfo(locale, status); + if (dtitvinf == nullptr) { + status = U_MEMORY_ALLOCATION_ERROR; + return nullptr; + } + return create(locale, dtitvinf, &skeleton, status); +} + + + +DateIntervalFormat* U_EXPORT2 +DateIntervalFormat::createInstance(const UnicodeString& skeleton, + const DateIntervalInfo& dtitvinf, + UErrorCode& status) { + return createInstance(skeleton, Locale::getDefault(), dtitvinf, status); +} + + +DateIntervalFormat* U_EXPORT2 +DateIntervalFormat::createInstance(const UnicodeString& skeleton, + const Locale& locale, + const DateIntervalInfo& dtitvinf, + UErrorCode& status) { + DateIntervalInfo* ptn = dtitvinf.clone(); + return create(locale, ptn, &skeleton, status); +} + + +DateIntervalFormat::DateIntervalFormat() +: fInfo(nullptr), + fDateFormat(nullptr), + fFromCalendar(nullptr), + fToCalendar(nullptr), + fLocale(Locale::getRoot()), + fDatePattern(nullptr), + fTimePattern(nullptr), + fDateTimeFormat(nullptr), + fCapitalizationContext(UDISPCTX_CAPITALIZATION_NONE) +{} + + +DateIntervalFormat::DateIntervalFormat(const DateIntervalFormat& itvfmt) +: Format(itvfmt), + fInfo(nullptr), + fDateFormat(nullptr), + fFromCalendar(nullptr), + fToCalendar(nullptr), + fLocale(itvfmt.fLocale), + fDatePattern(nullptr), + fTimePattern(nullptr), + fDateTimeFormat(nullptr), + fCapitalizationContext(UDISPCTX_CAPITALIZATION_NONE) { + *this = itvfmt; +} + + +DateIntervalFormat& +DateIntervalFormat::operator=(const DateIntervalFormat& itvfmt) { + if ( this != &itvfmt ) { + delete fDateFormat; + delete fInfo; + delete fFromCalendar; + delete fToCalendar; + delete fDatePattern; + delete fTimePattern; + delete fDateTimeFormat; + { + Mutex lock(&gFormatterMutex); + if ( itvfmt.fDateFormat ) { + fDateFormat = itvfmt.fDateFormat->clone(); + } else { + fDateFormat = nullptr; + } + if ( itvfmt.fFromCalendar ) { + fFromCalendar = itvfmt.fFromCalendar->clone(); + } else { + fFromCalendar = nullptr; + } + if ( itvfmt.fToCalendar ) { + fToCalendar = itvfmt.fToCalendar->clone(); + } else { + fToCalendar = nullptr; + } + } + if ( itvfmt.fInfo ) { + fInfo = itvfmt.fInfo->clone(); + } else { + fInfo = nullptr; + } + fSkeleton = itvfmt.fSkeleton; + int8_t i; + for ( i = 0; i< DateIntervalInfo::kIPI_MAX_INDEX; ++i ) { + fIntervalPatterns[i] = itvfmt.fIntervalPatterns[i]; + } + fLocale = itvfmt.fLocale; + fDatePattern = (itvfmt.fDatePattern)? itvfmt.fDatePattern->clone(): nullptr; + fTimePattern = (itvfmt.fTimePattern)? itvfmt.fTimePattern->clone(): nullptr; + fDateTimeFormat = (itvfmt.fDateTimeFormat)? itvfmt.fDateTimeFormat->clone(): nullptr; + fCapitalizationContext = itvfmt.fCapitalizationContext; + } + return *this; +} + + +DateIntervalFormat::~DateIntervalFormat() { + delete fInfo; + delete fDateFormat; + delete fFromCalendar; + delete fToCalendar; + delete fDatePattern; + delete fTimePattern; + delete fDateTimeFormat; +} + + +DateIntervalFormat* +DateIntervalFormat::clone() const { + return new DateIntervalFormat(*this); +} + + +bool +DateIntervalFormat::operator==(const Format& other) const { + if (typeid(*this) != typeid(other)) {return false;} + const DateIntervalFormat* fmt = (DateIntervalFormat*)&other; + if (this == fmt) {return true;} + if (!Format::operator==(other)) {return false;} + if ((fInfo != fmt->fInfo) && (fInfo == nullptr || fmt->fInfo == nullptr)) {return false;} + if (fInfo && fmt->fInfo && (*fInfo != *fmt->fInfo )) {return false;} + { + Mutex lock(&gFormatterMutex); + if (fDateFormat != fmt->fDateFormat && (fDateFormat == nullptr || fmt->fDateFormat == nullptr)) {return false;} + if (fDateFormat && fmt->fDateFormat && (*fDateFormat != *fmt->fDateFormat)) {return false;} + } + // note: fFromCalendar and fToCalendar hold no persistent state, and therefore do not participate in operator ==. + // fDateFormat has the primary calendar for the DateIntervalFormat. + if (fSkeleton != fmt->fSkeleton) {return false;} + if (fDatePattern != fmt->fDatePattern && (fDatePattern == nullptr || fmt->fDatePattern == nullptr)) {return false;} + if (fDatePattern && fmt->fDatePattern && (*fDatePattern != *fmt->fDatePattern)) {return false;} + if (fTimePattern != fmt->fTimePattern && (fTimePattern == nullptr || fmt->fTimePattern == nullptr)) {return false;} + if (fTimePattern && fmt->fTimePattern && (*fTimePattern != *fmt->fTimePattern)) {return false;} + if (fDateTimeFormat != fmt->fDateTimeFormat && (fDateTimeFormat == nullptr || fmt->fDateTimeFormat == nullptr)) {return false;} + if (fDateTimeFormat && fmt->fDateTimeFormat && (*fDateTimeFormat != *fmt->fDateTimeFormat)) {return false;} + if (fLocale != fmt->fLocale) {return false;} + + for (int32_t i = 0; i< DateIntervalInfo::kIPI_MAX_INDEX; ++i ) { + if (fIntervalPatterns[i].firstPart != fmt->fIntervalPatterns[i].firstPart) {return false;} + if (fIntervalPatterns[i].secondPart != fmt->fIntervalPatterns[i].secondPart ) {return false;} + if (fIntervalPatterns[i].laterDateFirst != fmt->fIntervalPatterns[i].laterDateFirst) {return false;} + } + if (fCapitalizationContext != fmt->fCapitalizationContext) {return false;} + return true; +} + + +UnicodeString& +DateIntervalFormat::format(const Formattable& obj, + UnicodeString& appendTo, + FieldPosition& fieldPosition, + UErrorCode& status) const { + if ( U_FAILURE(status) ) { + return appendTo; + } + + if ( obj.getType() == Formattable::kObject ) { + const UObject* formatObj = obj.getObject(); + const DateInterval* interval = dynamic_cast<const DateInterval*>(formatObj); + if (interval != nullptr) { + return format(interval, appendTo, fieldPosition, status); + } + } + status = U_ILLEGAL_ARGUMENT_ERROR; + return appendTo; +} + + +UnicodeString& +DateIntervalFormat::format(const DateInterval* dtInterval, + UnicodeString& appendTo, + FieldPosition& fieldPosition, + UErrorCode& status) const { + if ( U_FAILURE(status) ) { + return appendTo; + } + if (fDateFormat == nullptr || fInfo == nullptr) { + status = U_INVALID_STATE_ERROR; + return appendTo; + } + + FieldPositionOnlyHandler handler(fieldPosition); + handler.setAcceptFirstOnly(true); + int8_t ignore; + + Mutex lock(&gFormatterMutex); + return formatIntervalImpl(*dtInterval, appendTo, ignore, handler, status); +} + + +FormattedDateInterval DateIntervalFormat::formatToValue( + const DateInterval& dtInterval, + UErrorCode& status) const { + if (U_FAILURE(status)) { + return FormattedDateInterval(status); + } + // LocalPointer only sets OOM status if U_SUCCESS is true. + LocalPointer<FormattedDateIntervalData> result(new FormattedDateIntervalData(status), status); + if (U_FAILURE(status)) { + return FormattedDateInterval(status); + } + UnicodeString string; + int8_t firstIndex; + auto handler = result->getHandler(status); + handler.setCategory(UFIELD_CATEGORY_DATE); + { + Mutex lock(&gFormatterMutex); + formatIntervalImpl(dtInterval, string, firstIndex, handler, status); + } + handler.getError(status); + result->appendString(string, status); + if (U_FAILURE(status)) { + return FormattedDateInterval(status); + } + + // Compute the span fields and sort them into place: + if (firstIndex != -1) { + result->addOverlapSpans(UFIELD_CATEGORY_DATE_INTERVAL_SPAN, firstIndex, status); + if (U_FAILURE(status)) { + return FormattedDateInterval(status); + } + result->sort(); + } + + return FormattedDateInterval(result.orphan()); +} + + +UnicodeString& +DateIntervalFormat::format(Calendar& fromCalendar, + Calendar& toCalendar, + UnicodeString& appendTo, + FieldPosition& pos, + UErrorCode& status) const { + FieldPositionOnlyHandler handler(pos); + handler.setAcceptFirstOnly(true); + int8_t ignore; + + Mutex lock(&gFormatterMutex); + return formatImpl(fromCalendar, toCalendar, appendTo, ignore, handler, status); +} + + +FormattedDateInterval DateIntervalFormat::formatToValue( + Calendar& fromCalendar, + Calendar& toCalendar, + UErrorCode& status) const { + if (U_FAILURE(status)) { + return FormattedDateInterval(status); + } + // LocalPointer only sets OOM status if U_SUCCESS is true. + LocalPointer<FormattedDateIntervalData> result(new FormattedDateIntervalData(status), status); + if (U_FAILURE(status)) { + return FormattedDateInterval(status); + } + UnicodeString string; + int8_t firstIndex; + auto handler = result->getHandler(status); + handler.setCategory(UFIELD_CATEGORY_DATE); + { + Mutex lock(&gFormatterMutex); + formatImpl(fromCalendar, toCalendar, string, firstIndex, handler, status); + } + handler.getError(status); + result->appendString(string, status); + if (U_FAILURE(status)) { + return FormattedDateInterval(status); + } + + // Compute the span fields and sort them into place: + if (firstIndex != -1) { + result->addOverlapSpans(UFIELD_CATEGORY_DATE_INTERVAL_SPAN, firstIndex, status); + result->sort(); + } + + return FormattedDateInterval(result.orphan()); +} + + +UnicodeString& DateIntervalFormat::formatIntervalImpl( + const DateInterval& dtInterval, + UnicodeString& appendTo, + int8_t& firstIndex, + FieldPositionHandler& fphandler, + UErrorCode& status) const { + if (U_FAILURE(status)) { + return appendTo; + } + if (fFromCalendar == nullptr || fToCalendar == nullptr) { + status = U_INVALID_STATE_ERROR; + return appendTo; + } + fFromCalendar->setTime(dtInterval.getFromDate(), status); + fToCalendar->setTime(dtInterval.getToDate(), status); + return formatImpl(*fFromCalendar, *fToCalendar, appendTo, firstIndex, fphandler, status); +} + + +// The following is only called from within the gFormatterMutex lock +UnicodeString& +DateIntervalFormat::formatImpl(Calendar& fromCalendar, + Calendar& toCalendar, + UnicodeString& appendTo, + int8_t& firstIndex, + FieldPositionHandler& fphandler, + UErrorCode& status) const { + if ( U_FAILURE(status) ) { + return appendTo; + } + + // Initialize firstIndex to -1 (single date, no range) + firstIndex = -1; + + // not support different calendar types and time zones + //if ( fromCalendar.getType() != toCalendar.getType() ) { + if ( !fromCalendar.isEquivalentTo(toCalendar) ) { + status = U_ILLEGAL_ARGUMENT_ERROR; + return appendTo; + } + + // First, find the largest different calendar field. + UCalendarDateFields field = UCAL_FIELD_COUNT; + + if ( fromCalendar.get(UCAL_ERA,status) != toCalendar.get(UCAL_ERA,status)) { + field = UCAL_ERA; + } else if ( fromCalendar.get(UCAL_YEAR, status) != + toCalendar.get(UCAL_YEAR, status) ) { + field = UCAL_YEAR; + } else if ( fromCalendar.get(UCAL_MONTH, status) != + toCalendar.get(UCAL_MONTH, status) ) { + field = UCAL_MONTH; + } else if ( fromCalendar.get(UCAL_DATE, status) != + toCalendar.get(UCAL_DATE, status) ) { + field = UCAL_DATE; + } else if ( fromCalendar.get(UCAL_AM_PM, status) != + toCalendar.get(UCAL_AM_PM, status) ) { + field = UCAL_AM_PM; + } else if ( fromCalendar.get(UCAL_HOUR, status) != + toCalendar.get(UCAL_HOUR, status) ) { + field = UCAL_HOUR; + } else if ( fromCalendar.get(UCAL_MINUTE, status) != + toCalendar.get(UCAL_MINUTE, status) ) { + field = UCAL_MINUTE; + } else if ( fromCalendar.get(UCAL_SECOND, status) != + toCalendar.get(UCAL_SECOND, status) ) { + field = UCAL_SECOND; + } else if ( fromCalendar.get(UCAL_MILLISECOND, status) != + toCalendar.get(UCAL_MILLISECOND, status) ) { + field = UCAL_MILLISECOND; + } + + if ( U_FAILURE(status) ) { + return appendTo; + } + UErrorCode tempStatus = U_ZERO_ERROR; // for setContext, ignored + // Set up fDateFormat to handle the first or only part of the interval + // (override later for any second part). Inside lock, OK to modify fDateFormat. + fDateFormat->setContext(fCapitalizationContext, tempStatus); + + if ( field == UCAL_FIELD_COUNT ) { + /* ignore the millisecond etc. small fields' difference. + * use single date when all the above are the same. + */ + return fDateFormat->_format(fromCalendar, appendTo, fphandler, status); + } + UBool fromToOnSameDay = (field==UCAL_AM_PM || field==UCAL_HOUR || field==UCAL_MINUTE || field==UCAL_SECOND || field==UCAL_MILLISECOND); + + // following call should not set wrong status, + // all the pass-in fields are valid till here + int32_t itvPtnIndex = DateIntervalInfo::calendarFieldToIntervalIndex(field, + status); + const PatternInfo& intervalPattern = fIntervalPatterns[itvPtnIndex]; + + if ( intervalPattern.firstPart.isEmpty() && + intervalPattern.secondPart.isEmpty() ) { + if ( fDateFormat->isFieldUnitIgnored(field) ) { + /* the largest different calendar field is small than + * the smallest calendar field in pattern, + * return single date format. + */ + return fDateFormat->_format(fromCalendar, appendTo, fphandler, status); + } + return fallbackFormat(fromCalendar, toCalendar, fromToOnSameDay, appendTo, firstIndex, fphandler, status); + } + // If the first part in interval pattern is empty, + // the 2nd part of it saves the full-pattern used in fall-back. + // For a 'real' interval pattern, the first part will never be empty. + if ( intervalPattern.firstPart.isEmpty() ) { + // fall back + UnicodeString originalPattern; + fDateFormat->toPattern(originalPattern); + fDateFormat->applyPattern(intervalPattern.secondPart); + appendTo = fallbackFormat(fromCalendar, toCalendar, fromToOnSameDay, appendTo, firstIndex, fphandler, status); + fDateFormat->applyPattern(originalPattern); + return appendTo; + } + Calendar* firstCal; + Calendar* secondCal; + if ( intervalPattern.laterDateFirst ) { + firstCal = &toCalendar; + secondCal = &fromCalendar; + firstIndex = 1; + } else { + firstCal = &fromCalendar; + secondCal = &toCalendar; + firstIndex = 0; + } + // break the interval pattern into 2 parts, + // first part should not be empty, + UnicodeString originalPattern; + fDateFormat->toPattern(originalPattern); + fDateFormat->applyPattern(intervalPattern.firstPart); + fDateFormat->_format(*firstCal, appendTo, fphandler, status); + + if ( !intervalPattern.secondPart.isEmpty() ) { + fDateFormat->applyPattern(intervalPattern.secondPart); + // No capitalization for second part of interval + tempStatus = U_ZERO_ERROR; + fDateFormat->setContext(UDISPCTX_CAPITALIZATION_NONE, tempStatus); + fDateFormat->_format(*secondCal, appendTo, fphandler, status); + } + fDateFormat->applyPattern(originalPattern); + return appendTo; +} + + + +void +DateIntervalFormat::parseObject(const UnicodeString& /* source */, + Formattable& /* result */, + ParsePosition& /* parse_pos */) const { + // parseObject(const UnicodeString&, Formattable&, UErrorCode&) const + // will set status as U_INVALID_FORMAT_ERROR if + // parse_pos is still 0 +} + + + + +const DateIntervalInfo* +DateIntervalFormat::getDateIntervalInfo() const { + return fInfo; +} + + +void +DateIntervalFormat::setDateIntervalInfo(const DateIntervalInfo& newItvPattern, + UErrorCode& status) { + delete fInfo; + fInfo = new DateIntervalInfo(newItvPattern); + if (fInfo == nullptr) { + status = U_MEMORY_ALLOCATION_ERROR; + } + + // Delete patterns that get reset by initializePattern + delete fDatePattern; + fDatePattern = nullptr; + delete fTimePattern; + fTimePattern = nullptr; + delete fDateTimeFormat; + fDateTimeFormat = nullptr; + + if (fDateFormat) { + initializePattern(status); + } +} + + + +const DateFormat* +DateIntervalFormat::getDateFormat() const { + return fDateFormat; +} + + +void +DateIntervalFormat::adoptTimeZone(TimeZone* zone) +{ + if (fDateFormat != nullptr) { + fDateFormat->adoptTimeZone(zone); + } + // The fDateFormat has the primary calendar for the DateIntervalFormat and has + // ownership of any adopted TimeZone; fFromCalendar and fToCalendar are internal + // work clones of that calendar (and should not also be given ownership of the + // adopted TimeZone). + if (fFromCalendar) { + fFromCalendar->setTimeZone(*zone); + } + if (fToCalendar) { + fToCalendar->setTimeZone(*zone); + } +} + +void +DateIntervalFormat::setTimeZone(const TimeZone& zone) +{ + if (fDateFormat != nullptr) { + fDateFormat->setTimeZone(zone); + } + // The fDateFormat has the primary calendar for the DateIntervalFormat; + // fFromCalendar and fToCalendar are internal work clones of that calendar. + if (fFromCalendar) { + fFromCalendar->setTimeZone(zone); + } + if (fToCalendar) { + fToCalendar->setTimeZone(zone); + } +} + +const TimeZone& +DateIntervalFormat::getTimeZone() const +{ + if (fDateFormat != nullptr) { + Mutex lock(&gFormatterMutex); + return fDateFormat->getTimeZone(); + } + // If fDateFormat is nullptr (unexpected), create default timezone. + return *(TimeZone::createDefault()); +} + +void +DateIntervalFormat::setContext(UDisplayContext value, UErrorCode& status) +{ + if (U_FAILURE(status)) + return; + if ( (UDisplayContextType)((uint32_t)value >> 8) == UDISPCTX_TYPE_CAPITALIZATION ) { + fCapitalizationContext = value; + } else { + status = U_ILLEGAL_ARGUMENT_ERROR; + } +} + +UDisplayContext +DateIntervalFormat::getContext(UDisplayContextType type, UErrorCode& status) const +{ + if (U_FAILURE(status)) + return (UDisplayContext)0; + if (type != UDISPCTX_TYPE_CAPITALIZATION) { + status = U_ILLEGAL_ARGUMENT_ERROR; + return (UDisplayContext)0; + } + return fCapitalizationContext; +} + +DateIntervalFormat::DateIntervalFormat(const Locale& locale, + DateIntervalInfo* dtItvInfo, + const UnicodeString* skeleton, + UErrorCode& status) +: fInfo(nullptr), + fDateFormat(nullptr), + fFromCalendar(nullptr), + fToCalendar(nullptr), + fLocale(locale), + fDatePattern(nullptr), + fTimePattern(nullptr), + fDateTimeFormat(nullptr), + fCapitalizationContext(UDISPCTX_CAPITALIZATION_NONE) +{ + LocalPointer<DateIntervalInfo> info(dtItvInfo, status); + LocalPointer<SimpleDateFormat> dtfmt(static_cast<SimpleDateFormat *>( + DateFormat::createInstanceForSkeleton(*skeleton, locale, status)), status); + if (U_FAILURE(status)) { + return; + } + + if ( skeleton ) { + fSkeleton = *skeleton; + } + fInfo = info.orphan(); + fDateFormat = dtfmt.orphan(); + if ( fDateFormat->getCalendar() ) { + fFromCalendar = fDateFormat->getCalendar()->clone(); + fToCalendar = fDateFormat->getCalendar()->clone(); + } + initializePattern(status); +} + +DateIntervalFormat* U_EXPORT2 +DateIntervalFormat::create(const Locale& locale, + DateIntervalInfo* dtitvinf, + const UnicodeString* skeleton, + UErrorCode& status) { + DateIntervalFormat* f = new DateIntervalFormat(locale, dtitvinf, + skeleton, status); + if ( f == nullptr ) { + status = U_MEMORY_ALLOCATION_ERROR; + delete dtitvinf; + } else if ( U_FAILURE(status) ) { + // safe to delete f, although nothing actually is saved + delete f; + f = 0; + } + return f; +} + + + +/** + * Initialize interval patterns locale to this formatter + * + * This code is a bit complicated since + * 1. the interval patterns saved in resource bundle files are interval + * patterns based on date or time only. + * It does not have interval patterns based on both date and time. + * Interval patterns on both date and time are algorithm generated. + * + * For example, it has interval patterns on skeleton "dMy" and "hm", + * but it does not have interval patterns on skeleton "dMyhm". + * + * The rule to genearte interval patterns for both date and time skeleton are + * 1) when the year, month, or day differs, concatenate the two original + * expressions with a separator between, + * For example, interval pattern from "Jan 10, 2007 10:10 am" + * to "Jan 11, 2007 10:10am" is + * "Jan 10, 2007 10:10 am - Jan 11, 2007 10:10am" + * + * 2) otherwise, present the date followed by the range expression + * for the time. + * For example, interval pattern from "Jan 10, 2007 10:10 am" + * to "Jan 10, 2007 11:10am" is + * "Jan 10, 2007 10:10 am - 11:10am" + * + * 2. even a pattern does not request a certion calendar field, + * the interval pattern needs to include such field if such fields are + * different between 2 dates. + * For example, a pattern/skeleton is "hm", but the interval pattern + * includes year, month, and date when year, month, and date differs. + * + * @param status output param set to success/failure code on exit + * @stable ICU 4.0 + */ +void +DateIntervalFormat::initializePattern(UErrorCode& status) { + if ( U_FAILURE(status) ) { + return; + } + const Locale& locale = fDateFormat->getSmpFmtLocale(); + if ( fSkeleton.isEmpty() ) { + UnicodeString fullPattern; + fDateFormat->toPattern(fullPattern); +#ifdef DTITVFMT_DEBUG + char result[1000]; + char result_1[1000]; + char mesg[2000]; + fSkeleton.extract(0, fSkeleton.length(), result, "UTF-8"); + snprintf(mesg, sizeof(mesg), "in getBestSkeleton: fSkeleton: %s; \n", result); + PRINTMESG(mesg) +#endif + // fSkeleton is already set by createDateIntervalInstance() + // or by createInstance(UnicodeString skeleton, .... ) + fSkeleton = DateTimePatternGenerator::staticGetSkeleton( + fullPattern, status); + if ( U_FAILURE(status) ) { + return; + } + } + + // initialize the fIntervalPattern ordering + int8_t i; + for ( i = 0; i < DateIntervalInfo::kIPI_MAX_INDEX; ++i ) { + fIntervalPatterns[i].laterDateFirst = fInfo->getDefaultOrder(); + } + + /* Check whether the skeleton is a combination of date and time. + * For the complication reason 1 explained above. + */ + UnicodeString dateSkeleton; + UnicodeString timeSkeleton; + UnicodeString normalizedTimeSkeleton; + UnicodeString normalizedDateSkeleton; + + + /* the difference between time skeleton and normalizedTimeSkeleton are: + * 1. (Formerly, normalized time skeleton folded 'H' to 'h'; no longer true) + * 2. (Formerly, 'a' was omitted in normalized time skeleton; this is now handled elsewhere) + * 3. there is only one appearance for 'h' or 'H', 'm','v', 'z' in normalized + * time skeleton + * + * The difference between date skeleton and normalizedDateSkeleton are: + * 1. both 'y' and 'd' appear only once in normalizeDateSkeleton + * 2. 'E' and 'EE' are normalized into 'EEE' + * 3. 'MM' is normalized into 'M' + */ + UnicodeString convertedSkeleton = normalizeHourMetacharacters(fSkeleton); + getDateTimeSkeleton(convertedSkeleton, dateSkeleton, normalizedDateSkeleton, + timeSkeleton, normalizedTimeSkeleton); + +#ifdef DTITVFMT_DEBUG + char result[1000]; + char result_1[1000]; + char mesg[2000]; + fSkeleton.extract(0, fSkeleton.length(), result, "UTF-8"); + snprintf(mesg, sizeof(mesg), "in getBestSkeleton: fSkeleton: %s; \n", result); + PRINTMESG(mesg) +#endif + + // move this up here since we need it for fallbacks + if ( timeSkeleton.length() > 0 && dateSkeleton.length() > 0 ) { + // Need the Date/Time pattern for concatenation of the date + // with the time interval. + // The date/time pattern ( such as {0} {1} ) is saved in + // calendar, that is why need to get the CalendarData here. + LocalUResourceBundlePointer dateTimePatternsRes(ures_open(nullptr, locale.getBaseName(), &status)); + ures_getByKey(dateTimePatternsRes.getAlias(), gCalendarTag, + dateTimePatternsRes.getAlias(), &status); + ures_getByKeyWithFallback(dateTimePatternsRes.getAlias(), gGregorianTag, + dateTimePatternsRes.getAlias(), &status); + ures_getByKeyWithFallback(dateTimePatternsRes.getAlias(), gDateTimePatternsTag, + dateTimePatternsRes.getAlias(), &status); + + int32_t dateTimeFormatLength; + const char16_t* dateTimeFormat = ures_getStringByIndex( + dateTimePatternsRes.getAlias(), + (int32_t)DateFormat::kDateTime, + &dateTimeFormatLength, &status); + if ( U_SUCCESS(status) && dateTimeFormatLength >= 3 ) { + fDateTimeFormat = new UnicodeString(dateTimeFormat, dateTimeFormatLength); + if (fDateTimeFormat == nullptr) { + status = U_MEMORY_ALLOCATION_ERROR; + return; + } + } + } + + UBool found = setSeparateDateTimePtn(normalizedDateSkeleton, + normalizedTimeSkeleton); + + // for skeletons with seconds, found is false and we enter this block + if ( found == false ) { + // use fallback + // TODO: if user asks "m"(minute), but "d"(day) differ + if ( timeSkeleton.length() != 0 ) { + if ( dateSkeleton.length() == 0 ) { + // prefix with yMd + timeSkeleton.insert(0, gDateFormatSkeleton[DateFormat::kShort], -1); + UnicodeString pattern = DateFormat::getBestPattern( + locale, timeSkeleton, status); + if ( U_FAILURE(status) ) { + return; + } + // for fall back interval patterns, + // the first part of the pattern is empty, + // the second part of the pattern is the full-pattern + // should be used in fall-back. + setPatternInfo(UCAL_DATE, nullptr, &pattern, fInfo->getDefaultOrder()); + setPatternInfo(UCAL_MONTH, nullptr, &pattern, fInfo->getDefaultOrder()); + setPatternInfo(UCAL_YEAR, nullptr, &pattern, fInfo->getDefaultOrder()); + + timeSkeleton.insert(0, CAP_G); + pattern = DateFormat::getBestPattern( + locale, timeSkeleton, status); + if ( U_FAILURE(status) ) { + return; + } + setPatternInfo(UCAL_ERA, nullptr, &pattern, fInfo->getDefaultOrder()); + } else { + // TODO: fall back + } + } else { + // TODO: fall back + } + return; + } // end of skeleton not found + // interval patterns for skeleton are found in resource + if ( timeSkeleton.length() == 0 ) { + // done + } else if ( dateSkeleton.length() == 0 ) { + // prefix with yMd + timeSkeleton.insert(0, gDateFormatSkeleton[DateFormat::kShort], -1); + UnicodeString pattern = DateFormat::getBestPattern( + locale, timeSkeleton, status); + if ( U_FAILURE(status) ) { + return; + } + // for fall back interval patterns, + // the first part of the pattern is empty, + // the second part of the pattern is the full-pattern + // should be used in fall-back. + setPatternInfo(UCAL_DATE, nullptr, &pattern, fInfo->getDefaultOrder()); + setPatternInfo(UCAL_MONTH, nullptr, &pattern, fInfo->getDefaultOrder()); + setPatternInfo(UCAL_YEAR, nullptr, &pattern, fInfo->getDefaultOrder()); + + timeSkeleton.insert(0, CAP_G); + pattern = DateFormat::getBestPattern( + locale, timeSkeleton, status); + if ( U_FAILURE(status) ) { + return; + } + setPatternInfo(UCAL_ERA, nullptr, &pattern, fInfo->getDefaultOrder()); + } else { + /* if both present, + * 1) when the era, year, month, or day differs, + * concatenate the two original expressions with a separator between, + * 2) otherwise, present the date followed by the + * range expression for the time. + */ + /* + * 1) when the era, year, month, or day differs, + * concatenate the two original expressions with a separator between, + */ + // if field exists, use fall back + UnicodeString skeleton = fSkeleton; + if ( !fieldExistsInSkeleton(UCAL_DATE, dateSkeleton) ) { + // prefix skeleton with 'd' + skeleton.insert(0, LOW_D); + setFallbackPattern(UCAL_DATE, skeleton, status); + } + if ( !fieldExistsInSkeleton(UCAL_MONTH, dateSkeleton) ) { + // then prefix skeleton with 'M' + skeleton.insert(0, CAP_M); + setFallbackPattern(UCAL_MONTH, skeleton, status); + } + if ( !fieldExistsInSkeleton(UCAL_YEAR, dateSkeleton) ) { + // then prefix skeleton with 'y' + skeleton.insert(0, LOW_Y); + setFallbackPattern(UCAL_YEAR, skeleton, status); + } + if ( !fieldExistsInSkeleton(UCAL_ERA, dateSkeleton) ) { + // then prefix skeleton with 'G' + skeleton.insert(0, CAP_G); + setFallbackPattern(UCAL_ERA, skeleton, status); + } + + /* + * 2) otherwise, present the date followed by the + * range expression for the time. + */ + + if ( fDateTimeFormat == nullptr ) { + // earlier failure getting dateTimeFormat + return; + } + + UnicodeString datePattern = DateFormat::getBestPattern( + locale, dateSkeleton, status); + + concatSingleDate2TimeInterval(*fDateTimeFormat, datePattern, UCAL_AM_PM, status); + concatSingleDate2TimeInterval(*fDateTimeFormat, datePattern, UCAL_HOUR, status); + concatSingleDate2TimeInterval(*fDateTimeFormat, datePattern, UCAL_MINUTE, status); + } +} + + + +UnicodeString +DateIntervalFormat::normalizeHourMetacharacters(const UnicodeString& skeleton) const { + UnicodeString result = skeleton; + + char16_t hourMetachar = u'\0'; + char16_t dayPeriodChar = u'\0'; + int32_t hourFieldStart = 0; + int32_t hourFieldLength = 0; + int32_t dayPeriodStart = 0; + int32_t dayPeriodLength = 0; + for (int32_t i = 0; i < result.length(); i++) { + char16_t c = result[i]; + if (c == LOW_J || c == CAP_J || c == CAP_C || c == LOW_H || c == CAP_H || c == LOW_K || c == CAP_K) { + if (hourMetachar == u'\0') { + hourMetachar = c; + hourFieldStart = i; + } + ++hourFieldLength; + } else if (c == LOW_A || c == LOW_B || c == CAP_B) { + if (dayPeriodChar == u'\0') { + dayPeriodChar = c; + dayPeriodStart = i; + } + ++dayPeriodLength; + } else { + if (hourMetachar != u'\0' && dayPeriodChar != u'\0') { + break; + } + } + } + + if (hourMetachar != u'\0') { + UErrorCode err = U_ZERO_ERROR; + char16_t hourChar = CAP_H; + UnicodeString convertedPattern = DateFormat::getBestPattern(fLocale, UnicodeString(hourMetachar), err); + + if (U_SUCCESS(err)) { + // strip literal text from the pattern (so literal characters don't get mistaken for pattern + // characters-- such as the 'h' in 'Uhr' in Germam) + int32_t firstQuotePos; + while ((firstQuotePos = convertedPattern.indexOf(u'\'')) != -1) { + int32_t secondQuotePos = convertedPattern.indexOf(u'\'', firstQuotePos + 1); + if (secondQuotePos == -1) { + secondQuotePos = firstQuotePos; + } + convertedPattern.replace(firstQuotePos, (secondQuotePos - firstQuotePos) + 1, UnicodeString()); + } + + if (convertedPattern.indexOf(LOW_H) != -1) { + hourChar = LOW_H; + } else if (convertedPattern.indexOf(CAP_K) != -1) { + hourChar = CAP_K; + } else if (convertedPattern.indexOf(LOW_K) != -1) { + hourChar = LOW_K; + } + + if (convertedPattern.indexOf(LOW_B) != -1) { + dayPeriodChar = LOW_B; + } else if (convertedPattern.indexOf(CAP_B) != -1) { + dayPeriodChar = CAP_B; + } else if (dayPeriodChar == u'\0') { + dayPeriodChar = LOW_A; + } + } + + UnicodeString hourAndDayPeriod(hourChar); + if (hourChar != CAP_H && hourChar != LOW_K) { + int32_t newDayPeriodLength = 0; + if (dayPeriodLength >= 5 || hourFieldLength >= 5) { + newDayPeriodLength = 5; + } else if (dayPeriodLength >= 3 || hourFieldLength >= 3) { + newDayPeriodLength = 3; + } else { + newDayPeriodLength = 1; + } + for (int32_t i = 0; i < newDayPeriodLength; i++) { + hourAndDayPeriod.append(dayPeriodChar); + } + } + result.replace(hourFieldStart, hourFieldLength, hourAndDayPeriod); + if (dayPeriodStart > hourFieldStart) { + // before deleting the original day period field, adjust its position in case + // we just changed the size of the hour field (and new day period field) + dayPeriodStart += hourAndDayPeriod.length() - hourFieldLength; + } + result.remove(dayPeriodStart, dayPeriodLength); + } + return result; +} + + +void U_EXPORT2 +DateIntervalFormat::getDateTimeSkeleton(const UnicodeString& skeleton, + UnicodeString& dateSkeleton, + UnicodeString& normalizedDateSkeleton, + UnicodeString& timeSkeleton, + UnicodeString& normalizedTimeSkeleton) { + // dateSkeleton follows the sequence of y*M*E*d* + // timeSkeleton follows the sequence of hm*[v|z]? + int32_t ECount = 0; + int32_t dCount = 0; + int32_t MCount = 0; + int32_t yCount = 0; + int32_t mCount = 0; + int32_t vCount = 0; + int32_t zCount = 0; + char16_t hourChar = u'\0'; + int32_t i; + + for (i = 0; i < skeleton.length(); ++i) { + char16_t ch = skeleton[i]; + switch ( ch ) { + case CAP_E: + dateSkeleton.append(ch); + ++ECount; + break; + case LOW_D: + dateSkeleton.append(ch); + ++dCount; + break; + case CAP_M: + dateSkeleton.append(ch); + ++MCount; + break; + case LOW_Y: + dateSkeleton.append(ch); + ++yCount; + break; + case CAP_G: + case CAP_Y: + case LOW_U: + case CAP_Q: + case LOW_Q: + case CAP_L: + case LOW_L: + case CAP_W: + case LOW_W: + case CAP_D: + case CAP_F: + case LOW_G: + case LOW_E: + case LOW_C: + case CAP_U: + case LOW_R: + normalizedDateSkeleton.append(ch); + dateSkeleton.append(ch); + break; + case LOW_H: + case CAP_H: + case LOW_K: + case CAP_K: + timeSkeleton.append(ch); + if (hourChar == u'\0') { + hourChar = ch; + } + break; + case LOW_M: + timeSkeleton.append(ch); + ++mCount; + break; + case LOW_Z: + ++zCount; + timeSkeleton.append(ch); + break; + case LOW_V: + ++vCount; + timeSkeleton.append(ch); + break; + case LOW_A: + case CAP_V: + case CAP_Z: + case LOW_J: + case LOW_S: + case CAP_S: + case CAP_A: + case LOW_B: + case CAP_B: + timeSkeleton.append(ch); + normalizedTimeSkeleton.append(ch); + break; + } + } + + /* generate normalized form for date*/ + if ( yCount != 0 ) { + for (i = 0; i < yCount; ++i) { + normalizedDateSkeleton.append(LOW_Y); + } + } + if ( MCount != 0 ) { + if ( MCount < 3 ) { + normalizedDateSkeleton.append(CAP_M); + } else { + for ( int32_t j = 0; j < MCount && j < MAX_M_COUNT; ++j) { + normalizedDateSkeleton.append(CAP_M); + } + } + } + if ( ECount != 0 ) { + if ( ECount <= 3 ) { + normalizedDateSkeleton.append(CAP_E); + } else { + for ( int32_t j = 0; j < ECount && j < MAX_E_COUNT; ++j ) { + normalizedDateSkeleton.append(CAP_E); + } + } + } + if ( dCount != 0 ) { + normalizedDateSkeleton.append(LOW_D); + } + + /* generate normalized form for time */ + if ( hourChar != u'\0' ) { + normalizedTimeSkeleton.append(hourChar); + } + if ( mCount != 0 ) { + normalizedTimeSkeleton.append(LOW_M); + } + if ( zCount != 0 ) { + normalizedTimeSkeleton.append(LOW_Z); + } + if ( vCount != 0 ) { + normalizedTimeSkeleton.append(LOW_V); + } +} + + +/** + * Generate date or time interval pattern from resource, + * and set them into the interval pattern locale to this formatter. + * + * It needs to handle the following: + * 1. need to adjust field width. + * For example, the interval patterns saved in DateIntervalInfo + * includes "dMMMy", but not "dMMMMy". + * Need to get interval patterns for dMMMMy from dMMMy. + * Another example, the interval patterns saved in DateIntervalInfo + * includes "hmv", but not "hmz". + * Need to get interval patterns for "hmz' from 'hmv' + * + * 2. there might be no pattern for 'y' differ for skeleton "Md", + * in order to get interval patterns for 'y' differ, + * need to look for it from skeleton 'yMd' + * + * @param dateSkeleton normalized date skeleton + * @param timeSkeleton normalized time skeleton + * @return whether the resource is found for the skeleton. + * true if interval pattern found for the skeleton, + * false otherwise. + * @stable ICU 4.0 + */ +UBool +DateIntervalFormat::setSeparateDateTimePtn( + const UnicodeString& dateSkeleton, + const UnicodeString& timeSkeleton) { + const UnicodeString* skeleton; + // if both date and time skeleton present, + // the final interval pattern might include time interval patterns + // ( when, am_pm, hour, minute differ ), + // but not date interval patterns ( when year, month, day differ ). + // For year/month/day differ, it falls back to fall-back pattern. + if ( timeSkeleton.length() != 0 ) { + skeleton = &timeSkeleton; + } else { + skeleton = &dateSkeleton; + } + + /* interval patterns for skeleton "dMMMy" (but not "dMMMMy") + * are defined in resource, + * interval patterns for skeleton "dMMMMy" are calculated by + * 1. get the best match skeleton for "dMMMMy", which is "dMMMy" + * 2. get the interval patterns for "dMMMy", + * 3. extend "MMM" to "MMMM" in above interval patterns for "dMMMMy" + * getBestSkeleton() is step 1. + */ + // best skeleton, and the difference information + int8_t differenceInfo = 0; + const UnicodeString* bestSkeleton = fInfo->getBestSkeleton(*skeleton, + differenceInfo); + /* best skeleton could be nullptr. + For example: in "ca" resource file, + interval format is defined as following + intervalFormats{ + fallback{"{0} - {1}"} + } + there is no skeletons/interval patterns defined, + and the best skeleton match could be nullptr + */ + if ( bestSkeleton == nullptr ) { + return false; + } + + // Set patterns for fallback use, need to do this + // before returning if differenceInfo == -1 + UErrorCode status; + if ( dateSkeleton.length() != 0) { + status = U_ZERO_ERROR; + fDatePattern = new UnicodeString(DateFormat::getBestPattern( + fLocale, dateSkeleton, status)); + // no way to report OOM. :( + } + if ( timeSkeleton.length() != 0) { + status = U_ZERO_ERROR; + fTimePattern = new UnicodeString(DateFormat::getBestPattern( + fLocale, timeSkeleton, status)); + // no way to report OOM. :( + } + + // difference: + // 0 means the best matched skeleton is the same as input skeleton + // 1 means the fields are the same, but field width are different + // 2 means the only difference between fields are v/z, + // -1 means there are other fields difference + // (this will happen, for instance, if the supplied skeleton has seconds, + // but no skeletons in the intervalFormats data do) + if ( differenceInfo == -1 ) { + // skeleton has different fields, not only v/z difference + return false; + } + + if ( timeSkeleton.length() == 0 ) { + UnicodeString extendedSkeleton; + UnicodeString extendedBestSkeleton; + // only has date skeleton + setIntervalPattern(UCAL_DATE, skeleton, bestSkeleton, differenceInfo, + &extendedSkeleton, &extendedBestSkeleton); + + UBool extended = setIntervalPattern(UCAL_MONTH, skeleton, bestSkeleton, + differenceInfo, + &extendedSkeleton, &extendedBestSkeleton); + + if ( extended ) { + bestSkeleton = &extendedBestSkeleton; + skeleton = &extendedSkeleton; + } + setIntervalPattern(UCAL_YEAR, skeleton, bestSkeleton, differenceInfo, + &extendedSkeleton, &extendedBestSkeleton); + setIntervalPattern(UCAL_ERA, skeleton, bestSkeleton, differenceInfo, + &extendedSkeleton, &extendedBestSkeleton); + } else { + setIntervalPattern(UCAL_MINUTE, skeleton, bestSkeleton, differenceInfo); + setIntervalPattern(UCAL_HOUR, skeleton, bestSkeleton, differenceInfo); + setIntervalPattern(UCAL_AM_PM, skeleton, bestSkeleton, differenceInfo); + } + return true; +} + + + +void +DateIntervalFormat::setFallbackPattern(UCalendarDateFields field, + const UnicodeString& skeleton, + UErrorCode& status) { + if ( U_FAILURE(status) ) { + return; + } + UnicodeString pattern = DateFormat::getBestPattern( + fLocale, skeleton, status); + if ( U_FAILURE(status) ) { + return; + } + setPatternInfo(field, nullptr, &pattern, fInfo->getDefaultOrder()); +} + + + + +void +DateIntervalFormat::setPatternInfo(UCalendarDateFields field, + const UnicodeString* firstPart, + const UnicodeString* secondPart, + UBool laterDateFirst) { + // for fall back interval patterns, + // the first part of the pattern is empty, + // the second part of the pattern is the full-pattern + // should be used in fall-back. + UErrorCode status = U_ZERO_ERROR; + // following should not set any wrong status. + int32_t itvPtnIndex = DateIntervalInfo::calendarFieldToIntervalIndex(field, + status); + if ( U_FAILURE(status) ) { + return; + } + PatternInfo& ptn = fIntervalPatterns[itvPtnIndex]; + if ( firstPart ) { + ptn.firstPart = *firstPart; + } + if ( secondPart ) { + ptn.secondPart = *secondPart; + } + ptn.laterDateFirst = laterDateFirst; +} + +void +DateIntervalFormat::setIntervalPattern(UCalendarDateFields field, + const UnicodeString& intervalPattern) { + UBool order = fInfo->getDefaultOrder(); + setIntervalPattern(field, intervalPattern, order); +} + + +void +DateIntervalFormat::setIntervalPattern(UCalendarDateFields field, + const UnicodeString& intervalPattern, + UBool laterDateFirst) { + const UnicodeString* pattern = &intervalPattern; + UBool order = laterDateFirst; + // check for "latestFirst:" or "earliestFirst:" prefix + int8_t prefixLength = UPRV_LENGTHOF(gLaterFirstPrefix); + int8_t earliestFirstLength = UPRV_LENGTHOF(gEarlierFirstPrefix); + UnicodeString realPattern; + if ( intervalPattern.startsWith(gLaterFirstPrefix, prefixLength) ) { + order = true; + intervalPattern.extract(prefixLength, + intervalPattern.length() - prefixLength, + realPattern); + pattern = &realPattern; + } else if ( intervalPattern.startsWith(gEarlierFirstPrefix, + earliestFirstLength) ) { + order = false; + intervalPattern.extract(earliestFirstLength, + intervalPattern.length() - earliestFirstLength, + realPattern); + pattern = &realPattern; + } + + int32_t splitPoint = splitPatternInto2Part(*pattern); + + UnicodeString firstPart; + UnicodeString secondPart; + pattern->extract(0, splitPoint, firstPart); + if ( splitPoint < pattern->length() ) { + pattern->extract(splitPoint, pattern->length()-splitPoint, secondPart); + } + setPatternInfo(field, &firstPart, &secondPart, order); +} + + + + +/** + * Generate interval pattern from existing resource + * + * It not only save the interval patterns, + * but also return the extended skeleton and its best match skeleton. + * + * @param field largest different calendar field + * @param skeleton skeleton + * @param bestSkeleton the best match skeleton which has interval pattern + * defined in resource + * @param differenceInfo the difference between skeleton and best skeleton + * 0 means the best matched skeleton is the same as input skeleton + * 1 means the fields are the same, but field width are different + * 2 means the only difference between fields are v/z, + * -1 means there are other fields difference + * + * @param extendedSkeleton extended skeleton + * @param extendedBestSkeleton extended best match skeleton + * @return whether the interval pattern is found + * through extending skeleton or not. + * true if interval pattern is found by + * extending skeleton, false otherwise. + * @stable ICU 4.0 + */ +UBool +DateIntervalFormat::setIntervalPattern(UCalendarDateFields field, + const UnicodeString* skeleton, + const UnicodeString* bestSkeleton, + int8_t differenceInfo, + UnicodeString* extendedSkeleton, + UnicodeString* extendedBestSkeleton) { + UErrorCode status = U_ZERO_ERROR; + // following getIntervalPattern() should not generate error status + UnicodeString pattern; + fInfo->getIntervalPattern(*bestSkeleton, field, pattern, status); + if ( pattern.isEmpty() ) { + // single date + if ( SimpleDateFormat::isFieldUnitIgnored(*bestSkeleton, field) ) { + // do nothing, format will handle it + return false; + } + + // for 24 hour system, interval patterns in resource file + // might not include pattern when am_pm differ, + // which should be the same as hour differ. + // add it here for simplicity + if ( field == UCAL_AM_PM ) { + fInfo->getIntervalPattern(*bestSkeleton, UCAL_HOUR, pattern,status); + if ( !pattern.isEmpty() ) { + UBool suppressDayPeriodField = fSkeleton.indexOf(CAP_J) != -1; + UnicodeString adjustIntervalPattern; + adjustFieldWidth(*skeleton, *bestSkeleton, pattern, differenceInfo, + suppressDayPeriodField, adjustIntervalPattern); + setIntervalPattern(field, adjustIntervalPattern); + } + return false; + } + // else, looking for pattern when 'y' differ for 'dMMMM' skeleton, + // first, get best match pattern "MMMd", + // since there is no pattern for 'y' differs for skeleton 'MMMd', + // need to look for it from skeleton 'yMMMd', + // if found, adjust field width in interval pattern from + // "MMM" to "MMMM". + char16_t fieldLetter = fgCalendarFieldToPatternLetter[field]; + if ( extendedSkeleton ) { + *extendedSkeleton = *skeleton; + *extendedBestSkeleton = *bestSkeleton; + extendedSkeleton->insert(0, fieldLetter); + extendedBestSkeleton->insert(0, fieldLetter); + // for example, looking for patterns when 'y' differ for + // skeleton "MMMM". + fInfo->getIntervalPattern(*extendedBestSkeleton,field,pattern,status); + if ( pattern.isEmpty() && differenceInfo == 0 ) { + // if there is no skeleton "yMMMM" defined, + // look for the best match skeleton, for example: "yMMM" + const UnicodeString* tmpBest = fInfo->getBestSkeleton( + *extendedBestSkeleton, differenceInfo); + if ( tmpBest != 0 && differenceInfo != -1 ) { + fInfo->getIntervalPattern(*tmpBest, field, pattern, status); + bestSkeleton = tmpBest; + } + } + } + } + if ( !pattern.isEmpty() ) { + UBool suppressDayPeriodField = fSkeleton.indexOf(CAP_J) != -1; + if ( differenceInfo != 0 || suppressDayPeriodField) { + UnicodeString adjustIntervalPattern; + adjustFieldWidth(*skeleton, *bestSkeleton, pattern, differenceInfo, + suppressDayPeriodField, adjustIntervalPattern); + setIntervalPattern(field, adjustIntervalPattern); + } else { + setIntervalPattern(field, pattern); + } + if ( extendedSkeleton && !extendedSkeleton->isEmpty() ) { + return true; + } + } + return false; +} + + + +int32_t U_EXPORT2 +DateIntervalFormat::splitPatternInto2Part(const UnicodeString& intervalPattern) { + UBool inQuote = false; + char16_t prevCh = 0; + int32_t count = 0; + + /* repeatedPattern used to record whether a pattern has already seen. + It is a pattern applies to first calendar if it is first time seen, + otherwise, it is a pattern applies to the second calendar + */ + UBool patternRepeated[] = + { + // A B C D E F G H I J K L M N O + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + // P Q R S T U V W X Y Z + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + // a b c d e f g h i j k l m n o + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + // p q r s t u v w x y z + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 + }; + + int8_t PATTERN_CHAR_BASE = 0x41; + + /* loop through the pattern string character by character looking for + * the first repeated pattern letter, which breaks the interval pattern + * into 2 parts. + */ + int32_t i; + UBool foundRepetition = false; + for (i = 0; i < intervalPattern.length(); ++i) { + char16_t ch = intervalPattern.charAt(i); + + if (ch != prevCh && count > 0) { + // check the repeativeness of pattern letter + UBool repeated = patternRepeated[(int)(prevCh - PATTERN_CHAR_BASE)]; + if ( repeated == false ) { + patternRepeated[prevCh - PATTERN_CHAR_BASE] = true; + } else { + foundRepetition = true; + break; + } + count = 0; + } + if (ch == 0x0027 /*'*/) { + // Consecutive single quotes are a single quote literal, + // either outside of quotes or between quotes + if ((i+1) < intervalPattern.length() && + intervalPattern.charAt(i+1) == 0x0027 /*'*/) { + ++i; + } else { + inQuote = ! inQuote; + } + } + else if (!inQuote && ((ch >= 0x0061 /*'a'*/ && ch <= 0x007A /*'z'*/) + || (ch >= 0x0041 /*'A'*/ && ch <= 0x005A /*'Z'*/))) { + // ch is a date-time pattern character + prevCh = ch; + ++count; + } + } + // check last pattern char, distinguish + // "dd MM" ( no repetition ), + // "d-d"(last char repeated ), and + // "d-d MM" ( repetition found ) + if ( count > 0 && foundRepetition == false ) { + if ( patternRepeated[(int)(prevCh - PATTERN_CHAR_BASE)] == false ) { + count = 0; + } + } + return (i - count); +} + +// The following is only called from fallbackFormat, i.e. within the gFormatterMutex lock +void DateIntervalFormat::fallbackFormatRange( + Calendar& fromCalendar, + Calendar& toCalendar, + UnicodeString& appendTo, + int8_t& firstIndex, + FieldPositionHandler& fphandler, + UErrorCode& status) const { + UnicodeString fallbackPattern; + fInfo->getFallbackIntervalPattern(fallbackPattern); + SimpleFormatter sf(fallbackPattern, 2, 2, status); + if (U_FAILURE(status)) { + return; + } + int32_t offsets[2]; + UnicodeString patternBody = sf.getTextWithNoArguments(offsets, 2); + + UErrorCode tempStatus = U_ZERO_ERROR; // for setContext, ignored + // TODO(ICU-20406): Use SimpleFormatter Iterator interface when available. + if (offsets[0] < offsets[1]) { + firstIndex = 0; + appendTo.append(patternBody.tempSubStringBetween(0, offsets[0])); + fDateFormat->_format(fromCalendar, appendTo, fphandler, status); + appendTo.append(patternBody.tempSubStringBetween(offsets[0], offsets[1])); + // No capitalization for second part of interval + fDateFormat->setContext(UDISPCTX_CAPITALIZATION_NONE, tempStatus); + fDateFormat->_format(toCalendar, appendTo, fphandler, status); + appendTo.append(patternBody.tempSubStringBetween(offsets[1])); + } else { + firstIndex = 1; + appendTo.append(patternBody.tempSubStringBetween(0, offsets[1])); + fDateFormat->_format(toCalendar, appendTo, fphandler, status); + appendTo.append(patternBody.tempSubStringBetween(offsets[1], offsets[0])); + // No capitalization for second part of interval + fDateFormat->setContext(UDISPCTX_CAPITALIZATION_NONE, tempStatus); + fDateFormat->_format(fromCalendar, appendTo, fphandler, status); + appendTo.append(patternBody.tempSubStringBetween(offsets[0])); + } +} + +// The following is only called from formatImpl, i.e. within the gFormatterMutex lock +UnicodeString& +DateIntervalFormat::fallbackFormat(Calendar& fromCalendar, + Calendar& toCalendar, + UBool fromToOnSameDay, // new + UnicodeString& appendTo, + int8_t& firstIndex, + FieldPositionHandler& fphandler, + UErrorCode& status) const { + if ( U_FAILURE(status) ) { + return appendTo; + } + + UBool formatDatePlusTimeRange = (fromToOnSameDay && fDatePattern && fTimePattern); + if (formatDatePlusTimeRange) { + SimpleFormatter sf(*fDateTimeFormat, 2, 2, status); + if (U_FAILURE(status)) { + return appendTo; + } + int32_t offsets[2]; + UnicodeString patternBody = sf.getTextWithNoArguments(offsets, 2); + + UnicodeString fullPattern; // for saving the pattern in fDateFormat + fDateFormat->toPattern(fullPattern); // save current pattern, restore later + + UErrorCode tempStatus = U_ZERO_ERROR; // for setContext, ignored + // {0} is time range + // {1} is single date portion + // TODO(ICU-20406): Use SimpleFormatter Iterator interface when available. + if (offsets[0] < offsets[1]) { + appendTo.append(patternBody.tempSubStringBetween(0, offsets[0])); + fDateFormat->applyPattern(*fTimePattern); + fallbackFormatRange(fromCalendar, toCalendar, appendTo, firstIndex, fphandler, status); + appendTo.append(patternBody.tempSubStringBetween(offsets[0], offsets[1])); + fDateFormat->applyPattern(*fDatePattern); + // No capitalization for second portion + fDateFormat->setContext(UDISPCTX_CAPITALIZATION_NONE, tempStatus); + fDateFormat->_format(fromCalendar, appendTo, fphandler, status); + appendTo.append(patternBody.tempSubStringBetween(offsets[1])); + } else { + appendTo.append(patternBody.tempSubStringBetween(0, offsets[1])); + fDateFormat->applyPattern(*fDatePattern); + fDateFormat->_format(fromCalendar, appendTo, fphandler, status); + appendTo.append(patternBody.tempSubStringBetween(offsets[1], offsets[0])); + fDateFormat->applyPattern(*fTimePattern); + // No capitalization for second portion + fDateFormat->setContext(UDISPCTX_CAPITALIZATION_NONE, tempStatus); + fallbackFormatRange(fromCalendar, toCalendar, appendTo, firstIndex, fphandler, status); + appendTo.append(patternBody.tempSubStringBetween(offsets[0])); + } + + // restore full pattern + fDateFormat->applyPattern(fullPattern); + } else { + fallbackFormatRange(fromCalendar, toCalendar, appendTo, firstIndex, fphandler, status); + } + return appendTo; +} + + + + +UBool U_EXPORT2 +DateIntervalFormat::fieldExistsInSkeleton(UCalendarDateFields field, + const UnicodeString& skeleton) +{ + const char16_t fieldChar = fgCalendarFieldToPatternLetter[field]; + return ( (skeleton.indexOf(fieldChar) == -1)?false:true ) ; +} + + + +void U_EXPORT2 +DateIntervalFormat::adjustFieldWidth(const UnicodeString& inputSkeleton, + const UnicodeString& bestMatchSkeleton, + const UnicodeString& bestIntervalPattern, + int8_t differenceInfo, + UBool suppressDayPeriodField, + UnicodeString& adjustedPtn) { + adjustedPtn = bestIntervalPattern; + int32_t inputSkeletonFieldWidth[] = + { + // A B C D E F G H I J K L M N O + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + // P Q R S T U V W X Y Z + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + // a b c d e f g h i j k l m n o + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + // p q r s t u v w x y z + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 + }; + + int32_t bestMatchSkeletonFieldWidth[] = + { + // A B C D E F G H I J K L M N O + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + // P Q R S T U V W X Y Z + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + // a b c d e f g h i j k l m n o + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + // p q r s t u v w x y z + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 + }; + + const int8_t PATTERN_CHAR_BASE = 0x41; + + DateIntervalInfo::parseSkeleton(inputSkeleton, inputSkeletonFieldWidth); + DateIntervalInfo::parseSkeleton(bestMatchSkeleton, bestMatchSkeletonFieldWidth); + if (suppressDayPeriodField) { + // remove the 'a' and any NBSP/NNBSP on one side of it + findReplaceInPattern(adjustedPtn, UnicodeString(u"\u00A0a",-1), UnicodeString()); + findReplaceInPattern(adjustedPtn, UnicodeString(u"\u202Fa",-1), UnicodeString()); + findReplaceInPattern(adjustedPtn, UnicodeString(u"a\u00A0",-1), UnicodeString()); + findReplaceInPattern(adjustedPtn, UnicodeString(u"a\u202F",-1), UnicodeString()); + findReplaceInPattern(adjustedPtn, UnicodeString(LOW_A), UnicodeString()); + // adjust interior double spaces, remove exterior whitespace + findReplaceInPattern(adjustedPtn, UnicodeString(" "), UnicodeString(" ")); + adjustedPtn.trim(); + } + if ( differenceInfo == 2 ) { + if (inputSkeleton.indexOf(LOW_Z) != -1) { + findReplaceInPattern(adjustedPtn, UnicodeString(LOW_V), UnicodeString(LOW_Z)); + } + if (inputSkeleton.indexOf(CAP_K) != -1) { + findReplaceInPattern(adjustedPtn, UnicodeString(LOW_H), UnicodeString(CAP_K)); + } + if (inputSkeleton.indexOf(LOW_K) != -1) { + findReplaceInPattern(adjustedPtn, UnicodeString(CAP_H), UnicodeString(LOW_K)); + } + if (inputSkeleton.indexOf(LOW_B) != -1) { + findReplaceInPattern(adjustedPtn, UnicodeString(LOW_A), UnicodeString(LOW_B)); + } + } + if (adjustedPtn.indexOf(LOW_A) != -1 && bestMatchSkeletonFieldWidth[LOW_A - PATTERN_CHAR_BASE] == 0) { + bestMatchSkeletonFieldWidth[LOW_A - PATTERN_CHAR_BASE] = 1; + } + if (adjustedPtn.indexOf(LOW_B) != -1 && bestMatchSkeletonFieldWidth[LOW_B - PATTERN_CHAR_BASE] == 0) { + bestMatchSkeletonFieldWidth[LOW_B - PATTERN_CHAR_BASE] = 1; + } + + UBool inQuote = false; + char16_t prevCh = 0; + int32_t count = 0; + + // loop through the pattern string character by character + int32_t adjustedPtnLength = adjustedPtn.length(); + int32_t i; + for (i = 0; i < adjustedPtnLength; ++i) { + char16_t ch = adjustedPtn.charAt(i); + if (ch != prevCh && count > 0) { + // check the repeativeness of pattern letter + char16_t skeletonChar = prevCh; + if ( skeletonChar == CAP_L ) { + // there is no "L" (always be "M") in skeleton, + // but there is "L" in pattern. + // for skeleton "M+", the pattern might be "...L..." + skeletonChar = CAP_M; + } + int32_t fieldCount = bestMatchSkeletonFieldWidth[(int)(skeletonChar - PATTERN_CHAR_BASE)]; + int32_t inputFieldCount = inputSkeletonFieldWidth[(int)(skeletonChar - PATTERN_CHAR_BASE)]; + if ( fieldCount == count && inputFieldCount > fieldCount ) { + count = inputFieldCount - fieldCount; + int32_t j; + for ( j = 0; j < count; ++j ) { + adjustedPtn.insert(i, prevCh); + } + i += count; + adjustedPtnLength += count; + } + count = 0; + } + if (ch == 0x0027 /*'*/) { + // Consecutive single quotes are a single quote literal, + // either outside of quotes or between quotes + if ((i+1) < adjustedPtn.length() && adjustedPtn.charAt(i+1) == 0x0027 /* ' */) { + ++i; + } else { + inQuote = ! inQuote; + } + } + else if ( ! inQuote && ((ch >= 0x0061 /*'a'*/ && ch <= 0x007A /*'z'*/) + || (ch >= 0x0041 /*'A'*/ && ch <= 0x005A /*'Z'*/))) { + // ch is a date-time pattern character + prevCh = ch; + ++count; + } + } + if ( count > 0 ) { + // last item + // check the repeativeness of pattern letter + char16_t skeletonChar = prevCh; + if ( skeletonChar == CAP_L ) { + // there is no "L" (always be "M") in skeleton, + // but there is "L" in pattern. + // for skeleton "M+", the pattern might be "...L..." + skeletonChar = CAP_M; + } + int32_t fieldCount = bestMatchSkeletonFieldWidth[(int)(skeletonChar - PATTERN_CHAR_BASE)]; + int32_t inputFieldCount = inputSkeletonFieldWidth[(int)(skeletonChar - PATTERN_CHAR_BASE)]; + if ( fieldCount == count && inputFieldCount > fieldCount ) { + count = inputFieldCount - fieldCount; + int32_t j; + for ( j = 0; j < count; ++j ) { + adjustedPtn.append(prevCh); + } + } + } +} + +void +DateIntervalFormat::findReplaceInPattern(UnicodeString& targetString, + const UnicodeString& strToReplace, + const UnicodeString& strToReplaceWith) { + int32_t firstQuoteIndex = targetString.indexOf(u'\''); + if (firstQuoteIndex == -1) { + targetString.findAndReplace(strToReplace, strToReplaceWith); + } else { + UnicodeString result; + UnicodeString source = targetString; + + while (firstQuoteIndex >= 0) { + int32_t secondQuoteIndex = source.indexOf(u'\'', firstQuoteIndex + 1); + if (secondQuoteIndex == -1) { + secondQuoteIndex = source.length() - 1; + } + + UnicodeString unquotedText(source, 0, firstQuoteIndex); + UnicodeString quotedText(source, firstQuoteIndex, secondQuoteIndex - firstQuoteIndex + 1); + + unquotedText.findAndReplace(strToReplace, strToReplaceWith); + result += unquotedText; + result += quotedText; + + source.remove(0, secondQuoteIndex + 1); + firstQuoteIndex = source.indexOf(u'\''); + } + source.findAndReplace(strToReplace, strToReplaceWith); + result += source; + targetString = result; + } +} + + + +void +DateIntervalFormat::concatSingleDate2TimeInterval(UnicodeString& format, + const UnicodeString& datePattern, + UCalendarDateFields field, + UErrorCode& status) { + // following should not set wrong status + int32_t itvPtnIndex = DateIntervalInfo::calendarFieldToIntervalIndex(field, + status); + if ( U_FAILURE(status) ) { + return; + } + PatternInfo& timeItvPtnInfo = fIntervalPatterns[itvPtnIndex]; + if ( !timeItvPtnInfo.firstPart.isEmpty() ) { + UnicodeString timeIntervalPattern(timeItvPtnInfo.firstPart); + timeIntervalPattern.append(timeItvPtnInfo.secondPart); + UnicodeString combinedPattern; + SimpleFormatter(format, 2, 2, status). + format(timeIntervalPattern, datePattern, combinedPattern, status); + if ( U_FAILURE(status) ) { + return; + } + setIntervalPattern(field, combinedPattern, timeItvPtnInfo.laterDateFirst); + } + // else: fall back + // it should not happen if the interval format defined is valid +} + + + +const char16_t +DateIntervalFormat::fgCalendarFieldToPatternLetter[] = +{ + /*GyM*/ CAP_G, LOW_Y, CAP_M, + /*wWd*/ LOW_W, CAP_W, LOW_D, + /*DEF*/ CAP_D, CAP_E, CAP_F, + /*ahH*/ LOW_A, LOW_H, CAP_H, + /*msS*/ LOW_M, LOW_S, CAP_S, // MINUTE, SECOND, MILLISECOND + /*z.Y*/ LOW_Z, SPACE, CAP_Y, // ZONE_OFFSET, DST_OFFSET, YEAR_WOY, + /*eug*/ LOW_E, LOW_U, LOW_G, // DOW_LOCAL, EXTENDED_YEAR, JULIAN_DAY, + /*A..*/ CAP_A, SPACE, SPACE, // MILLISECONDS_IN_DAY, IS_LEAP_MONTH, FIELD_COUNT +}; + + + +U_NAMESPACE_END + +#endif |