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|
// © 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 (static_cast<UDisplayContextType>(static_cast<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 static_cast<UDisplayContext>(0);
if (type != UDISPCTX_TYPE_CAPITALIZATION) {
status = U_ILLEGAL_ARGUMENT_ERROR;
return static_cast<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 = nullptr;
}
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(),
static_cast<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 != nullptr && 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[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[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[skeletonChar - PATTERN_CHAR_BASE];
int32_t inputFieldCount = inputSkeletonFieldWidth[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[skeletonChar - PATTERN_CHAR_BASE];
int32_t inputFieldCount = inputSkeletonFieldWidth[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
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