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/*
*******************************************************************************
* Copyright (C) 2008-2012, Google, International Business Machines Corporation
* and others. All Rights Reserved.
*******************************************************************************
*/
#ifndef __TMUTFMT_H__
#define __TMUTFMT_H__
#include "unicode/utypes.h"
/**
* \file
* \brief C++ API: Format and parse duration in single time unit
*/
#if !UCONFIG_NO_FORMATTING
#include "unicode/unistr.h"
#include "unicode/tmunit.h"
#include "unicode/tmutamt.h"
#include "unicode/measfmt.h"
#include "unicode/numfmt.h"
#include "unicode/plurrule.h"
/**
* Constants for various styles.
* There are 2 styles: full name and abbreviated name.
* For example, for English, the full name for hour duration is "3 hours",
* and the abbreviated name is "3 hrs".
* @stable ICU 4.8
*/
enum UTimeUnitFormatStyle {
/** @stable ICU 4.8 */
UTMUTFMT_FULL_STYLE,
/** @stable ICU 4.8 */
UTMUTFMT_ABBREVIATED_STYLE,
/** @stable ICU 4.8 */
UTMUTFMT_FORMAT_STYLE_COUNT
};
typedef enum UTimeUnitFormatStyle UTimeUnitFormatStyle; /**< @stable ICU 4.8 */
U_NAMESPACE_BEGIN
class Hashtable;
class UVector;
/**
* Format or parse a TimeUnitAmount, using plural rules for the units where available.
*
* <P>
* Code Sample:
* <pre>
* // create time unit amount instance - a combination of Number and time unit
* UErrorCode status = U_ZERO_ERROR;
* TimeUnitAmount* source = new TimeUnitAmount(2, TimeUnit::UTIMEUNIT_YEAR, status);
* // create time unit format instance
* TimeUnitFormat* format = new TimeUnitFormat(Locale("en"), status);
* // format a time unit amount
* UnicodeString formatted;
* Formattable formattable;
* if (U_SUCCESS(status)) {
* formattable.adoptObject(source);
* formatted = ((Format*)format)->format(formattable, formatted, status);
* Formattable result;
* ((Format*)format)->parseObject(formatted, result, status);
* if (U_SUCCESS(status)) {
* assert (result == formattable);
* }
* }
* </pre>
*
* <P>
* @see TimeUnitAmount
* @see TimeUnitFormat
* @stable ICU 4.2
*/
class U_I18N_API TimeUnitFormat: public MeasureFormat {
public:
/**
* Create TimeUnitFormat with default locale, and full name style.
* Use setLocale and/or setFormat to modify.
* @stable ICU 4.2
*/
TimeUnitFormat(UErrorCode& status);
/**
* Create TimeUnitFormat given locale, and full name style.
* @stable ICU 4.2
*/
TimeUnitFormat(const Locale& locale, UErrorCode& status);
/**
* Create TimeUnitFormat given locale and style.
* @stable ICU 4.8
*/
TimeUnitFormat(const Locale& locale, UTimeUnitFormatStyle style, UErrorCode& status);
/**
* Copy constructor.
* @stable ICU 4.2
*/
TimeUnitFormat(const TimeUnitFormat&);
/**
* deconstructor
* @stable ICU 4.2
*/
virtual ~TimeUnitFormat();
/**
* Clone this Format object polymorphically. The caller owns the result and
* should delete it when done.
* @return A copy of the object.
* @stable ICU 4.2
*/
virtual Format* clone(void) const;
/**
* Assignment operator
* @stable ICU 4.2
*/
TimeUnitFormat& operator=(const TimeUnitFormat& other);
/**
* Return true if the given Format objects are semantically equal. Objects
* of different subclasses are considered unequal.
* @param other the object to be compared with.
* @return true if the given Format objects are semantically equal.
* @stable ICU 4.2
*/
virtual UBool operator==(const Format& other) const;
/**
* Return true if the given Format objects are not semantically equal.
* Objects of different subclasses are considered unequal.
* @param other the object to be compared with.
* @return true if the given Format objects are not semantically equal.
* @stable ICU 4.2
*/
UBool operator!=(const Format& other) const;
/**
* Set the locale used for formatting or parsing.
* @param locale the locale to be set
* @param status output param set to success/failure code on exit
* @stable ICU 4.2
*/
void setLocale(const Locale& locale, UErrorCode& status);
/**
* Set the number format used for formatting or parsing.
* @param format the number formatter to be set
* @param status output param set to success/failure code on exit
* @stable ICU 4.2
*/
void setNumberFormat(const NumberFormat& format, UErrorCode& status);
using MeasureFormat::format;
/**
* Format a TimeUnitAmount.
* If the formattable object is not a time unit amount object,
* or the number in time unit amount is not a double type or long type
* numeric, it returns a failing status: U_ILLEGAL_ARGUMENT_ERROR.
* @see Format#format(const Formattable&, UnicodeString&, FieldPosition&, UErrorCode&) const
* @stable ICU 4.2
*/
virtual UnicodeString& format(const Formattable& obj,
UnicodeString& toAppendTo,
FieldPosition& pos,
UErrorCode& status) const;
/**
* Parse a TimeUnitAmount.
* @see Format#parseObject(const UnicodeString&, Formattable&, ParsePosition&) const;
* @stable ICU 4.2
*/
virtual void parseObject(const UnicodeString& source,
Formattable& result,
ParsePosition& pos) const;
/**
* Return the class ID for this class. This is useful only for comparing to
* a return value from getDynamicClassID(). For example:
* <pre>
* . Base* polymorphic_pointer = createPolymorphicObject();
* . if (polymorphic_pointer->getDynamicClassID() ==
* . erived::getStaticClassID()) ...
* </pre>
* @return The class ID for all objects of this class.
* @stable ICU 4.2
*/
static UClassID U_EXPORT2 getStaticClassID(void);
/**
* Returns a unique class ID POLYMORPHICALLY. Pure virtual override. This
* method is to implement a simple version of RTTI, since not all C++
* compilers support genuine RTTI. Polymorphic operator==() and clone()
* methods call this method.
*
* @return The class ID for this object. All objects of a
* given class have the same class ID. Objects of
* other classes have different class IDs.
* @stable ICU 4.2
*/
virtual UClassID getDynamicClassID(void) const;
private:
NumberFormat* fNumberFormat;
Locale fLocale;
Hashtable* fTimeUnitToCountToPatterns[TimeUnit::UTIMEUNIT_FIELD_COUNT];
PluralRules* fPluralRules;
UTimeUnitFormatStyle fStyle;
void create(const Locale& locale, UTimeUnitFormatStyle style, UErrorCode& status);
// it might actually be simpler to make them Decimal Formats later.
// initialize all private data members
void setup(UErrorCode& status);
// initialize data member without fill in data for fTimeUnitToCountToPattern
void initDataMembers(UErrorCode& status);
// initialize fTimeUnitToCountToPatterns from current locale's resource.
void readFromCurrentLocale(UTimeUnitFormatStyle style, const char* key, const UVector& pluralCounts,
UErrorCode& status);
// check completeness of fTimeUnitToCountToPatterns against all time units,
// and all plural rules, fill in fallback as necessary.
void checkConsistency(UTimeUnitFormatStyle style, const char* key, UErrorCode& status);
// fill in fTimeUnitToCountToPatterns from locale fall-back chain
void searchInLocaleChain(UTimeUnitFormatStyle style, const char* key, const char* localeName,
TimeUnit::UTimeUnitFields field, const UnicodeString&,
const char*, Hashtable*, UErrorCode&);
// initialize hash table
Hashtable* initHash(UErrorCode& status);
// delete hash table
void deleteHash(Hashtable* htable);
// copy hash table
void copyHash(const Hashtable* source, Hashtable* target, UErrorCode& status);
// get time unit name, such as "year", from time unit field enum, such as
// UTIMEUNIT_YEAR.
static const char* getTimeUnitName(TimeUnit::UTimeUnitFields field, UErrorCode& status);
};
inline UBool
TimeUnitFormat::operator!=(const Format& other) const {
return !operator==(other);
}
U_NAMESPACE_END
#endif /* #if !UCONFIG_NO_FORMATTING */
#endif // __TMUTFMT_H__
//eof