source/i18n/datefmt.cpp - external/github.com/unicode-org/icu - Git at Google

 /*
  *******************************************************************************
  * Copyright (C) 1997-2009, International Business Machines Corporation and    *
  * others. All Rights Reserved.                                                *
  *******************************************************************************
  *
  * File DATEFMT.CPP
  *
  * Modification History:
  *
  *   Date        Name        Description
  *   02/19/97    aliu        Converted from java.
  *   03/31/97    aliu        Modified extensively to work with 50 locales.
  *   04/01/97    aliu        Added support for centuries.
  *   08/12/97    aliu        Fixed operator== to use Calendar::equivalentTo.
  *   07/20/98    stephen     Changed ParsePosition initialization
  ********************************************************************************
  */

 #include "unicode/utypes.h"

 #if !UCONFIG_NO_FORMATTING

 #include "unicode/ures.h"
 #include "unicode/datefmt.h"
 #include "unicode/smpdtfmt.h"
 #include "unicode/dtptngen.h"
 #include "reldtfmt.h"

 #include "cstring.h"
 #include "windtfmt.h"

 #if defined( U_DEBUG_CALSVC ) || defined (U_DEBUG_CAL)
 #include <stdio.h>
 #endif

 // *****************************************************************************
 // class DateFormat
 // *****************************************************************************

 U_NAMESPACE_BEGIN

 DateFormat::DateFormat()
 :   fCalendar(0),
     fNumberFormat(0)
 {
 }

 //----------------------------------------------------------------------

 DateFormat::DateFormat(const DateFormat& other)
 :   Format(other),
     fCalendar(0),
     fNumberFormat(0)
 {
     *this = other;
 }

 //----------------------------------------------------------------------

 DateFormat& DateFormat::operator=(const DateFormat& other)
 {
     if (this != &other)
     {
         delete fCalendar;
         delete fNumberFormat;
         if(other.fCalendar) {
           fCalendar = other.fCalendar->clone();
         } else {
           fCalendar = NULL;
         }
         if(other.fNumberFormat) {
           fNumberFormat = (NumberFormat*)other.fNumberFormat->clone();
         } else {
           fNumberFormat = NULL;
         }
     }
     return *this;
 }

 //----------------------------------------------------------------------

 DateFormat::~DateFormat()
 {
     delete fCalendar;
     delete fNumberFormat;
 }

 //----------------------------------------------------------------------

 UBool
 DateFormat::operator==(const Format& other) const
 {
     // This protected comparison operator should only be called by subclasses
     // which have confirmed that the other object being compared against is
     // an instance of a sublcass of DateFormat.  THIS IS IMPORTANT.

     // Format::operator== guarantees that this cast is safe
     DateFormat* fmt = (DateFormat*)&other;

     return (this == fmt) ||
         (Format::operator==(other) &&
          fCalendar&&(fCalendar->isEquivalentTo(*fmt->fCalendar)) &&
          (fNumberFormat && *fNumberFormat == *fmt->fNumberFormat));
 }

 //----------------------------------------------------------------------

 UnicodeString&
 DateFormat::format(const Formattable& obj,
                    UnicodeString& appendTo,
                    FieldPosition& fieldPosition,
                    UErrorCode& status) const
 {
     if (U_FAILURE(status)) return appendTo;

     // if the type of the Formattable is double or long, treat it as if it were a Date
     UDate date = 0;
     switch (obj.getType())
     {
     case Formattable::kDate:
         date = obj.getDate();
         break;
     case Formattable::kDouble:
         date = (UDate)obj.getDouble();
         break;
     case Formattable::kLong:
         date = (UDate)obj.getLong();
         break;
     default:
         status = U_ILLEGAL_ARGUMENT_ERROR;
         return appendTo;
     }

     // Is this right?
     //if (fieldPosition.getBeginIndex() == fieldPosition.getEndIndex())
     //  status = U_ILLEGAL_ARGUMENT_ERROR;

     return format(date, appendTo, fieldPosition);
 }

 //----------------------------------------------------------------------

 UnicodeString&
 DateFormat::format(const Formattable& obj,
                    UnicodeString& appendTo,
                    FieldPositionIterator& posIter,
                    UErrorCode& status) const
 {
     if (U_FAILURE(status)) return appendTo;

     // if the type of the Formattable is double or long, treat it as if it were a Date
     UDate date = 0;
     switch (obj.getType())
     {
     case Formattable::kDate:
         date = obj.getDate();
         break;
     case Formattable::kDouble:
         date = (UDate)obj.getDouble();
         break;
     case Formattable::kLong:
         date = (UDate)obj.getLong();
         break;
     default:
         status = U_ILLEGAL_ARGUMENT_ERROR;
         return appendTo;
     }

     // Is this right?
     //if (fieldPosition.getBeginIndex() == fieldPosition.getEndIndex())
     //  status = U_ILLEGAL_ARGUMENT_ERROR;

     return format(date, appendTo, posIter, status);
 }

 //----------------------------------------------------------------------

 // Default implementation for backwards compatibility, subclasses should implement.
 UnicodeString&
 DateFormat::format(Calendar& /* unused cal */,
                    UnicodeString& appendTo,
                    FieldPositionIterator& /* unused posIter */,
                    UErrorCode& status) const {
     if (U_SUCCESS(status)) {
         status = U_UNSUPPORTED_ERROR;
     }
     return appendTo;
 }

 //----------------------------------------------------------------------

 UnicodeString&
 DateFormat::format(UDate date, UnicodeString& appendTo, FieldPosition& fieldPosition) const {
     if (fCalendar != NULL) {
         // Use our calendar instance
         UErrorCode ec = U_ZERO_ERROR;
         fCalendar->setTime(date, ec);
         if (U_SUCCESS(ec)) {
             return format(*fCalendar, appendTo, fieldPosition);
         }
     }
     return appendTo;
 }

 //----------------------------------------------------------------------

 UnicodeString&
 DateFormat::format(UDate date, UnicodeString& appendTo, FieldPositionIterator& posIter,
                    UErrorCode& status) const {
     if (fCalendar != NULL) {
         fCalendar->setTime(date, status);
         if (U_SUCCESS(status)) {
             return format(*fCalendar, appendTo, posIter, status);
         }
     }
     return appendTo;
 }

 //----------------------------------------------------------------------

 UnicodeString&
 DateFormat::format(UDate date, UnicodeString& appendTo) const
 {
     // Note that any error information is just lost.  That's okay
     // for this convenience method.
     FieldPosition fpos(0);
     return format(date, appendTo, fpos);
 }

 //----------------------------------------------------------------------

 UDate
 DateFormat::parse(const UnicodeString& text,
                   ParsePosition& pos) const
 {
     UDate d = 0; // Error return UDate is 0 (the epoch)
     if (fCalendar != NULL) {
         int32_t start = pos.getIndex();

         // Parse may update TimeZone used by the calendar.
         TimeZone *tzsav = (TimeZone*)fCalendar->getTimeZone().clone();

         fCalendar->clear();
         parse(text, *fCalendar, pos);
         if (pos.getIndex() != start) {
             UErrorCode ec = U_ZERO_ERROR;
             d = fCalendar->getTime(ec);
             if (U_FAILURE(ec)) {
                 // We arrive here if fCalendar is non-lenient and there
                 // is an out-of-range field.  We don't know which field
                 // was illegal so we set the error index to the start.
                 pos.setIndex(start);
                 pos.setErrorIndex(start);
                 d = 0;
             }
         }

         // Restore TimeZone
         fCalendar->adoptTimeZone(tzsav);
     }
     return d;
 }

 //----------------------------------------------------------------------

 UDate
 DateFormat::parse(const UnicodeString& text,
                   UErrorCode& status) const
 {
     if (U_FAILURE(status)) return 0;

     ParsePosition pos(0);
     UDate result = parse(text, pos);
     if (pos.getIndex() == 0) {
 #if defined (U_DEBUG_CAL)
       fprintf(stderr, "%s:%d - - failed to parse  - err index %d\n"
               , __FILE__, __LINE__, pos.getErrorIndex() );
 #endif
       status = U_ILLEGAL_ARGUMENT_ERROR;
     }
     return result;
 }

 //----------------------------------------------------------------------

 void
 DateFormat::parseObject(const UnicodeString& source,
                         Formattable& result,
                         ParsePosition& pos) const
 {
     result.setDate(parse(source, pos));
 }

 //----------------------------------------------------------------------

 DateFormat* U_EXPORT2
 DateFormat::createTimeInstance(DateFormat::EStyle style,
                                const Locale& aLocale)
 {
     return create(style, kNone, aLocale);
 }

 //----------------------------------------------------------------------

 DateFormat* U_EXPORT2
 DateFormat::createDateInstance(DateFormat::EStyle style,
                                const Locale& aLocale)
 {
     // +4 to set the correct index for getting data out of
     // LocaleElements.
     if(style != kNone)
     {
         style = (EStyle) (style + kDateOffset);
     }
     return create(kNone, (EStyle) (style), aLocale);
 }

 //----------------------------------------------------------------------

 DateFormat* U_EXPORT2
 DateFormat::createDateTimeInstance(EStyle dateStyle,
                                    EStyle timeStyle,
                                    const Locale& aLocale)
 {
     if(dateStyle != kNone)
     {
         dateStyle = (EStyle) (dateStyle + kDateOffset);
     }
     return create(timeStyle, dateStyle, aLocale);
 }

 //----------------------------------------------------------------------

 DateFormat* U_EXPORT2
 DateFormat::createInstance()
 {
     return create(kShort, (EStyle) (kShort + kDateOffset), Locale::getDefault());
 }

 //----------------------------------------------------------------------

 DateFormat* U_EXPORT2
 DateFormat::create(EStyle timeStyle, EStyle dateStyle, const Locale& locale)
 {
     UErrorCode status = U_ZERO_ERROR;
 #ifdef U_WINDOWS
     char buffer[8];
     int32_t count = locale.getKeywordValue("compat", buffer, sizeof(buffer), status);

     // if the locale has "@compat=host", create a host-specific DateFormat...
     if (count > 0 && uprv_strcmp(buffer, "host") == 0) {
         Win32DateFormat *f = new Win32DateFormat(timeStyle, dateStyle, locale, status);

         if (U_SUCCESS(status)) {
             return f;
         }

         delete f;
     }
 #endif

     // is it relative?
     if(/*((timeStyle!=UDAT_NONE)&&(timeStyle & UDAT_RELATIVE)) || */((dateStyle!=kNone)&&((dateStyle-kDateOffset) & UDAT_RELATIVE))) {
         RelativeDateFormat *r = new RelativeDateFormat((UDateFormatStyle)timeStyle, (UDateFormatStyle)(dateStyle-kDateOffset), locale, status);
         if(U_SUCCESS(status)) return r;
         delete r;
         status = U_ZERO_ERROR;
     }

     // Try to create a SimpleDateFormat of the desired style.
     SimpleDateFormat *f = new SimpleDateFormat(timeStyle, dateStyle, locale, status);
     if (U_SUCCESS(status)) return f;
     delete f;

     // If that fails, try to create a format using the default pattern and
     // the DateFormatSymbols for this locale.
     status = U_ZERO_ERROR;
     f = new SimpleDateFormat(locale, status);
     if (U_SUCCESS(status)) return f;
     delete f;

     // This should never really happen, because the preceding constructor
     // should always succeed.  If the resource data is unavailable, a last
     // resort object should be returned.
     return 0;
 }

 //----------------------------------------------------------------------

 const Locale* U_EXPORT2
 DateFormat::getAvailableLocales(int32_t& count)
 {
     // Get the list of installed locales.
     // Even if root has the correct date format for this locale,
     // it's still a valid locale (we don't worry about data fallbacks).
     return Locale::getAvailableLocales(count);
 }

 //----------------------------------------------------------------------

 void
 DateFormat::adoptCalendar(Calendar* newCalendar)
 {
     delete fCalendar;
     fCalendar = newCalendar;
 }

 //----------------------------------------------------------------------
 void
 DateFormat::setCalendar(const Calendar& newCalendar)
 {
     Calendar* newCalClone = newCalendar.clone();
     if (newCalClone != NULL) {
         adoptCalendar(newCalClone);
     }
 }

 //----------------------------------------------------------------------

 const Calendar*
 DateFormat::getCalendar() const
 {
     return fCalendar;
 }

 //----------------------------------------------------------------------

 void
 DateFormat::adoptNumberFormat(NumberFormat* newNumberFormat)
 {
     delete fNumberFormat;
     fNumberFormat = newNumberFormat;
     newNumberFormat->setParseIntegerOnly(TRUE);
 }
 //----------------------------------------------------------------------

 void
 DateFormat::setNumberFormat(const NumberFormat& newNumberFormat)
 {
     NumberFormat* newNumFmtClone = (NumberFormat*)newNumberFormat.clone();
     if (newNumFmtClone != NULL) {
         adoptNumberFormat(newNumFmtClone);
     }
 }

 //----------------------------------------------------------------------

 const NumberFormat*
 DateFormat::getNumberFormat() const
 {
     return fNumberFormat;
 }

 //----------------------------------------------------------------------

 void
 DateFormat::adoptTimeZone(TimeZone* zone)
 {
     if (fCalendar != NULL) {
         fCalendar->adoptTimeZone(zone);
     }
 }
 //----------------------------------------------------------------------

 void
 DateFormat::setTimeZone(const TimeZone& zone)
 {
     if (fCalendar != NULL) {
         fCalendar->setTimeZone(zone);
     }
 }

 //----------------------------------------------------------------------

 const TimeZone&
 DateFormat::getTimeZone() const
 {
     if (fCalendar != NULL) {
         return fCalendar->getTimeZone();
     }
     // If calendar doesn't exists, create default timezone.
     // fCalendar is rarely null
     return *(TimeZone::createDefault());
 }

 //----------------------------------------------------------------------

 void
 DateFormat::setLenient(UBool lenient)
 {
     if (fCalendar != NULL) {
         fCalendar->setLenient(lenient);
     }
 }

 //----------------------------------------------------------------------

 UBool
 DateFormat::isLenient() const
 {
     if (fCalendar != NULL) {
         return fCalendar->isLenient();
     }
     // fCalendar is rarely null
     return FALSE;
 }

 U_NAMESPACE_END

 #endif /* #if !UCONFIG_NO_FORMATTING */

 //eof
	/*
	*******************************************************************************
	* Copyright (C) 1997-2009, International Business Machines Corporation and *
	* others. All Rights Reserved. *
	*******************************************************************************
	*
	* File DATEFMT.CPP
	*
	* Modification History:
	*
	* Date Name Description
	* 02/19/97 aliu Converted from java.
	* 03/31/97 aliu Modified extensively to work with 50 locales.
	* 04/01/97 aliu Added support for centuries.
	* 08/12/97 aliu Fixed operator== to use Calendar::equivalentTo.
	* 07/20/98 stephen Changed ParsePosition initialization
	********************************************************************************
	*/

	#include "unicode/utypes.h"

	#if !UCONFIG_NO_FORMATTING

	#include "unicode/ures.h"
	#include "unicode/datefmt.h"
	#include "unicode/smpdtfmt.h"
	#include "unicode/dtptngen.h"
	#include "reldtfmt.h"

	#include "cstring.h"
	#include "windtfmt.h"

	#if defined( U_DEBUG_CALSVC ) \|\| defined (U_DEBUG_CAL)
	#include <stdio.h>
	#endif

	// *****************************************************************************
	// class DateFormat
	// *****************************************************************************

	U_NAMESPACE_BEGIN

	DateFormat::DateFormat()
	: fCalendar(0),
	fNumberFormat(0)
	{
	}

	//----------------------------------------------------------------------

	DateFormat::DateFormat(const DateFormat& other)
	: Format(other),
	fCalendar(0),
	fNumberFormat(0)
	{
	*this = other;
	}

	//----------------------------------------------------------------------

	DateFormat& DateFormat::operator=(const DateFormat& other)
	{
	if (this != &other)
	{
	delete fCalendar;
	delete fNumberFormat;
	if(other.fCalendar) {
	fCalendar = other.fCalendar->clone();
	} else {
	fCalendar = NULL;
	}
	if(other.fNumberFormat) {
	fNumberFormat = (NumberFormat*)other.fNumberFormat->clone();
	} else {
	fNumberFormat = NULL;
	}
	}
	return *this;
	}

	//----------------------------------------------------------------------

	DateFormat::~DateFormat()
	{
	delete fCalendar;
	delete fNumberFormat;
	}

	//----------------------------------------------------------------------

	UBool
	DateFormat::operator==(const Format& other) const
	{
	// This protected comparison operator should only be called by subclasses
	// which have confirmed that the other object being compared against is
	// an instance of a sublcass of DateFormat. THIS IS IMPORTANT.

	// Format::operator== guarantees that this cast is safe
	DateFormat* fmt = (DateFormat*)&other;

	return (this == fmt) \|\|
	(Format::operator==(other) &&
	fCalendar&&(fCalendar->isEquivalentTo(*fmt->fCalendar)) &&
	(fNumberFormat && fNumberFormat == fmt->fNumberFormat));
	}

	//----------------------------------------------------------------------

	UnicodeString&
	DateFormat::format(const Formattable& obj,
	UnicodeString& appendTo,
	FieldPosition& fieldPosition,
	UErrorCode& status) const
	{
	if (U_FAILURE(status)) return appendTo;

	// if the type of the Formattable is double or long, treat it as if it were a Date
	UDate date = 0;
	switch (obj.getType())
	{
	case Formattable::kDate:
	date = obj.getDate();
	break;
	case Formattable::kDouble:
	date = (UDate)obj.getDouble();
	break;
	case Formattable::kLong:
	date = (UDate)obj.getLong();
	break;
	default:
	status = U_ILLEGAL_ARGUMENT_ERROR;
	return appendTo;
	}

	// Is this right?
	//if (fieldPosition.getBeginIndex() == fieldPosition.getEndIndex())
	// status = U_ILLEGAL_ARGUMENT_ERROR;

	return format(date, appendTo, fieldPosition);
	}

	//----------------------------------------------------------------------

	UnicodeString&
	DateFormat::format(const Formattable& obj,
	UnicodeString& appendTo,
	FieldPositionIterator& posIter,
	UErrorCode& status) const
	{
	if (U_FAILURE(status)) return appendTo;

	// if the type of the Formattable is double or long, treat it as if it were a Date
	UDate date = 0;
	switch (obj.getType())
	{
	case Formattable::kDate:
	date = obj.getDate();
	break;
	case Formattable::kDouble:
	date = (UDate)obj.getDouble();
	break;
	case Formattable::kLong:
	date = (UDate)obj.getLong();
	break;
	default:
	status = U_ILLEGAL_ARGUMENT_ERROR;
	return appendTo;
	}

	// Is this right?
	//if (fieldPosition.getBeginIndex() == fieldPosition.getEndIndex())
	// status = U_ILLEGAL_ARGUMENT_ERROR;

	return format(date, appendTo, posIter, status);
	}

	//----------------------------------------------------------------------

	// Default implementation for backwards compatibility, subclasses should implement.
	UnicodeString&
	DateFormat::format(Calendar& /* unused cal */,
	UnicodeString& appendTo,
	FieldPositionIterator& /* unused posIter */,
	UErrorCode& status) const {
	if (U_SUCCESS(status)) {
	status = U_UNSUPPORTED_ERROR;
	}
	return appendTo;
	}

	//----------------------------------------------------------------------

	UnicodeString&
	DateFormat::format(UDate date, UnicodeString& appendTo, FieldPosition& fieldPosition) const {
	if (fCalendar != NULL) {
	// Use our calendar instance
	UErrorCode ec = U_ZERO_ERROR;
	fCalendar->setTime(date, ec);
	if (U_SUCCESS(ec)) {
	return format(*fCalendar, appendTo, fieldPosition);
	}
	}
	return appendTo;
	}

	//----------------------------------------------------------------------

	UnicodeString&
	DateFormat::format(UDate date, UnicodeString& appendTo, FieldPositionIterator& posIter,
	UErrorCode& status) const {
	if (fCalendar != NULL) {
	fCalendar->setTime(date, status);
	if (U_SUCCESS(status)) {
	return format(*fCalendar, appendTo, posIter, status);
	}
	}
	return appendTo;
	}

	//----------------------------------------------------------------------

	UnicodeString&
	DateFormat::format(UDate date, UnicodeString& appendTo) const
	{
	// Note that any error information is just lost. That's okay
	// for this convenience method.
	FieldPosition fpos(0);
	return format(date, appendTo, fpos);
	}

	//----------------------------------------------------------------------

	UDate
	DateFormat::parse(const UnicodeString& text,
	ParsePosition& pos) const
	{
	UDate d = 0; // Error return UDate is 0 (the epoch)
	if (fCalendar != NULL) {
	int32_t start = pos.getIndex();

	// Parse may update TimeZone used by the calendar.
	TimeZone tzsav = (TimeZone)fCalendar->getTimeZone().clone();

	fCalendar->clear();
	parse(text, *fCalendar, pos);
	if (pos.getIndex() != start) {
	UErrorCode ec = U_ZERO_ERROR;
	d = fCalendar->getTime(ec);
	if (U_FAILURE(ec)) {
	// We arrive here if fCalendar is non-lenient and there
	// is an out-of-range field. We don't know which field
	// was illegal so we set the error index to the start.
	pos.setIndex(start);
	pos.setErrorIndex(start);
	d = 0;
	}
	}

	// Restore TimeZone
	fCalendar->adoptTimeZone(tzsav);
	}
	return d;
	}

	//----------------------------------------------------------------------

	UDate
	DateFormat::parse(const UnicodeString& text,
	UErrorCode& status) const
	{
	if (U_FAILURE(status)) return 0;

	ParsePosition pos(0);
	UDate result = parse(text, pos);
	if (pos.getIndex() == 0) {
	#if defined (U_DEBUG_CAL)
	fprintf(stderr, "%s:%d - - failed to parse - err index %d\n"
	, __FILE__, __LINE__, pos.getErrorIndex() );
	#endif
	status = U_ILLEGAL_ARGUMENT_ERROR;
	}
	return result;
	}

	//----------------------------------------------------------------------

	void
	DateFormat::parseObject(const UnicodeString& source,
	Formattable& result,
	ParsePosition& pos) const
	{
	result.setDate(parse(source, pos));
	}

	//----------------------------------------------------------------------

	DateFormat* U_EXPORT2
	DateFormat::createTimeInstance(DateFormat::EStyle style,
	const Locale& aLocale)
	{
	return create(style, kNone, aLocale);
	}

	//----------------------------------------------------------------------

	DateFormat* U_EXPORT2
	DateFormat::createDateInstance(DateFormat::EStyle style,
	const Locale& aLocale)
	{
	// +4 to set the correct index for getting data out of
	// LocaleElements.
	if(style != kNone)
	{
	style = (EStyle) (style + kDateOffset);
	}
	return create(kNone, (EStyle) (style), aLocale);
	}

	//----------------------------------------------------------------------

	DateFormat* U_EXPORT2
	DateFormat::createDateTimeInstance(EStyle dateStyle,
	EStyle timeStyle,
	const Locale& aLocale)
	{
	if(dateStyle != kNone)
	{
	dateStyle = (EStyle) (dateStyle + kDateOffset);
	}
	return create(timeStyle, dateStyle, aLocale);
	}

	//----------------------------------------------------------------------

	DateFormat* U_EXPORT2
	DateFormat::createInstance()
	{
	return create(kShort, (EStyle) (kShort + kDateOffset), Locale::getDefault());
	}

	//----------------------------------------------------------------------

	DateFormat* U_EXPORT2
	DateFormat::create(EStyle timeStyle, EStyle dateStyle, const Locale& locale)
	{
	UErrorCode status = U_ZERO_ERROR;
	#ifdef U_WINDOWS
	char buffer[8];
	int32_t count = locale.getKeywordValue("compat", buffer, sizeof(buffer), status);

	// if the locale has "@compat=host", create a host-specific DateFormat...
	if (count > 0 && uprv_strcmp(buffer, "host") == 0) {
	Win32DateFormat *f = new Win32DateFormat(timeStyle, dateStyle, locale, status);

	if (U_SUCCESS(status)) {
	return f;
	}

	delete f;
	}
	#endif

	// is it relative?
	if(/((timeStyle!=UDAT_NONE)&&(timeStyle & UDAT_RELATIVE)) \|\| /((dateStyle!=kNone)&&((dateStyle-kDateOffset) & UDAT_RELATIVE))) {
	RelativeDateFormat *r = new RelativeDateFormat((UDateFormatStyle)timeStyle, (UDateFormatStyle)(dateStyle-kDateOffset), locale, status);
	if(U_SUCCESS(status)) return r;
	delete r;
	status = U_ZERO_ERROR;
	}

	// Try to create a SimpleDateFormat of the desired style.
	SimpleDateFormat *f = new SimpleDateFormat(timeStyle, dateStyle, locale, status);
	if (U_SUCCESS(status)) return f;
	delete f;

	// If that fails, try to create a format using the default pattern and
	// the DateFormatSymbols for this locale.
	status = U_ZERO_ERROR;
	f = new SimpleDateFormat(locale, status);
	if (U_SUCCESS(status)) return f;
	delete f;

	// This should never really happen, because the preceding constructor
	// should always succeed. If the resource data is unavailable, a last
	// resort object should be returned.
	return 0;
	}

	//----------------------------------------------------------------------

	const Locale* U_EXPORT2
	DateFormat::getAvailableLocales(int32_t& count)
	{
	// Get the list of installed locales.
	// Even if root has the correct date format for this locale,
	// it's still a valid locale (we don't worry about data fallbacks).
	return Locale::getAvailableLocales(count);
	}

	//----------------------------------------------------------------------

	void
	DateFormat::adoptCalendar(Calendar* newCalendar)
	{
	delete fCalendar;
	fCalendar = newCalendar;
	}

	//----------------------------------------------------------------------
	void
	DateFormat::setCalendar(const Calendar& newCalendar)
	{
	Calendar* newCalClone = newCalendar.clone();
	if (newCalClone != NULL) {
	adoptCalendar(newCalClone);
	}
	}

	//----------------------------------------------------------------------

	const Calendar*
	DateFormat::getCalendar() const
	{
	return fCalendar;
	}

	//----------------------------------------------------------------------

	void
	DateFormat::adoptNumberFormat(NumberFormat* newNumberFormat)
	{
	delete fNumberFormat;
	fNumberFormat = newNumberFormat;
	newNumberFormat->setParseIntegerOnly(TRUE);
	}
	//----------------------------------------------------------------------

	void
	DateFormat::setNumberFormat(const NumberFormat& newNumberFormat)
	{
	NumberFormat* newNumFmtClone = (NumberFormat*)newNumberFormat.clone();
	if (newNumFmtClone != NULL) {
	adoptNumberFormat(newNumFmtClone);
	}
	}

	//----------------------------------------------------------------------

	const NumberFormat*
	DateFormat::getNumberFormat() const
	{
	return fNumberFormat;
	}

	//----------------------------------------------------------------------

	void
	DateFormat::adoptTimeZone(TimeZone* zone)
	{
	if (fCalendar != NULL) {
	fCalendar->adoptTimeZone(zone);
	}
	}
	//----------------------------------------------------------------------

	void
	DateFormat::setTimeZone(const TimeZone& zone)
	{
	if (fCalendar != NULL) {
	fCalendar->setTimeZone(zone);
	}
	}

	//----------------------------------------------------------------------

	const TimeZone&
	DateFormat::getTimeZone() const
	{
	if (fCalendar != NULL) {
	return fCalendar->getTimeZone();
	}
	// If calendar doesn't exists, create default timezone.
	// fCalendar is rarely null
	return *(TimeZone::createDefault());
	}

	//----------------------------------------------------------------------

	void
	DateFormat::setLenient(UBool lenient)
	{
	if (fCalendar != NULL) {
	fCalendar->setLenient(lenient);
	}
	}

	//----------------------------------------------------------------------

	UBool
	DateFormat::isLenient() const
	{
	if (fCalendar != NULL) {
	return fCalendar->isLenient();
	}
	// fCalendar is rarely null
	return FALSE;
	}

	U_NAMESPACE_END

	#endif /* #if !UCONFIG_NO_FORMATTING */

	//eof