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// © 2016 and later: Unicode, Inc. and others.
// License & terms of use: http://www.unicode.org/copyright.html
/*
**********************************************************************
* Copyright (c) 2004-2016, International Business Machines
* Corporation and others. All Rights Reserved.
**********************************************************************
* Author: Alan Liu
* Created: April 20, 2004
* Since: ICU 3.0
**********************************************************************
*/
#ifndef MEASUREFORMAT_H
#define MEASUREFORMAT_H
#include "unicode/utypes.h"
#if U_SHOW_CPLUSPLUS_API
#if !UCONFIG_NO_FORMATTING
#include "unicode/format.h"
#include "unicode/udat.h"
/**
* \file
* \brief C++ API: Compatibility APIs for measure formatting.
*/
/**
* Constants for various widths.
* There are 4 widths: Wide, Short, Narrow, Numeric.
* For example, for English, when formatting "3 hours"
* Wide is "3 hours"; short is "3 hrs"; narrow is "3h";
* formatting "3 hours 17 minutes" as numeric give "3:17"
* @stable ICU 53
*/
enum UMeasureFormatWidth {
// Wide, short, and narrow must be first and in this order.
/**
* Spell out measure units.
* @stable ICU 53
*/
UMEASFMT_WIDTH_WIDE,
/**
* Abbreviate measure units.
* @stable ICU 53
*/
UMEASFMT_WIDTH_SHORT,
/**
* Use symbols for measure units when possible.
* @stable ICU 53
*/
UMEASFMT_WIDTH_NARROW,
/**
* Completely omit measure units when possible. For example, format
* '5 hours, 37 minutes' as '5:37'
* @stable ICU 53
*/
UMEASFMT_WIDTH_NUMERIC,
#ifndef U_HIDE_DEPRECATED_API
/**
* One more than the highest normal UMeasureFormatWidth value.
* @deprecated ICU 58 The numeric value may change over time, see ICU ticket #12420.
*/
UMEASFMT_WIDTH_COUNT = 4
#endif // U_HIDE_DEPRECATED_API
};
/** @stable ICU 53 */
typedef enum UMeasureFormatWidth UMeasureFormatWidth;
U_NAMESPACE_BEGIN
class Measure;
class MeasureUnit;
class NumberFormat;
class PluralRules;
class MeasureFormatCacheData;
class SharedNumberFormat;
class SharedPluralRules;
class QuantityFormatter;
class SimpleFormatter;
class ListFormatter;
class DateFormat;
/**
* IMPORTANT: New users are strongly encouraged to see if * numberformatter.h fits their use case. Although not deprecated, this header * is provided for backwards compatibility only, and has much more limited * capabilities. * * @see Format * @author Alan Liu * @stable ICU 3.0 */ class U_I18N_API MeasureFormat : public Format { public: using Format::parseObject; using Format::format; /** * Constructor. *
* NOTE: New users are strongly encouraged to use * {@link icu::number::NumberFormatter} instead of NumberFormat. * @stable ICU 53 */ MeasureFormat( const Locale &locale, UMeasureFormatWidth width, UErrorCode &status); /** * Constructor. *
* NOTE: New users are strongly encouraged to use * {@link icu::number::NumberFormatter} instead of NumberFormat. * @stable ICU 53 */ MeasureFormat( const Locale &locale, UMeasureFormatWidth width, NumberFormat *nfToAdopt, UErrorCode &status); /** * Copy constructor. * @stable ICU 3.0 */ MeasureFormat(const MeasureFormat &other); /** * Assignment operator. * @stable ICU 3.0 */ MeasureFormat &operator=(const MeasureFormat &rhs); /** * Destructor. * @stable ICU 3.0 */ virtual ~MeasureFormat(); /** * Return true if given Format objects are semantically equal. * @stable ICU 53 */ virtual bool operator==(const Format &other) const override; /** * Clones this object polymorphically. * @stable ICU 53 */ virtual MeasureFormat *clone() const override; /** * Formats object to produce a string. * @stable ICU 53 */ virtual UnicodeString &format( const Formattable &obj, UnicodeString &appendTo, FieldPosition &pos, UErrorCode &status) const override; #ifndef U_FORCE_HIDE_DRAFT_API /** * Parse a string to produce an object. This implementation sets * status to U_UNSUPPORTED_ERROR. * * @draft ICU 53 */ virtual void parseObject( const UnicodeString &source, Formattable &reslt, ParsePosition &pos) const override; #endif // U_FORCE_HIDE_DRAFT_API /** * Formats measure objects to produce a string. An example of such a * formatted string is 3 meters, 3.5 centimeters. Measure objects appear * in the formatted string in the same order they appear in the "measures" * array. The NumberFormat of this object is used only to format the amount * of the very last measure. The other amounts are formatted with zero * decimal places while rounding toward zero. * @param measures array of measure objects. * @param measureCount the number of measure objects. * @param appendTo formatted string appended here. * @param pos the field position. * @param status the error. * @return appendTo reference * * @stable ICU 53 */ UnicodeString &formatMeasures( const Measure *measures, int32_t measureCount, UnicodeString &appendTo, FieldPosition &pos, UErrorCode &status) const; /** * Formats a single measure per unit. An example of such a * formatted string is 3.5 meters per second. * @param measure The measure object. In above example, 3.5 meters. * @param perUnit The per unit. In above example, it is * `*%MeasureUnit::createSecond(status)`. * @param appendTo formatted string appended here. * @param pos the field position. * @param status the error. * @return appendTo reference * * @stable ICU 55 */ UnicodeString &formatMeasurePerUnit( const Measure &measure, const MeasureUnit &perUnit, UnicodeString &appendTo, FieldPosition &pos, UErrorCode &status) const; /** * Gets the display name of the specified {@link MeasureUnit} corresponding to the current * locale and format width. * @param unit The unit for which to get a display name. * @param status the error. * @return The display name in the locale and width specified in * the MeasureFormat constructor, or null if there is no display name available * for the specified unit. * * @stable ICU 58 */ UnicodeString getUnitDisplayName(const MeasureUnit& unit, UErrorCode &status) const; /** * Return a formatter for CurrencyAmount objects in the given * locale. *
* NOTE: New users are strongly encouraged to use * {@link icu::number::NumberFormatter} instead of NumberFormat. * @param locale desired locale * @param ec input-output error code * @return a formatter object, or nullptr upon error * @stable ICU 3.0 */ static MeasureFormat* U_EXPORT2 createCurrencyFormat(const Locale& locale, UErrorCode& ec); /** * Return a formatter for CurrencyAmount objects in the default * locale. *
* NOTE: New users are strongly encouraged to use * {@link icu::number::NumberFormatter} instead of NumberFormat. * @param ec input-output error code * @return a formatter object, or nullptr upon error * @stable ICU 3.0 */ static MeasureFormat* U_EXPORT2 createCurrencyFormat(UErrorCode& ec); /** * Return the class ID for this class. This is useful only for comparing to * a return value from getDynamicClassID(). For example: *
* . Base* polymorphic_pointer = createPolymorphicObject();
* . if (polymorphic_pointer->getDynamicClassID() ==
* . erived::getStaticClassID()) ...
*
* @return The class ID for all objects of this class.
* @stable ICU 53
*/
static UClassID U_EXPORT2 getStaticClassID();
/**
* 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 53
*/
virtual UClassID getDynamicClassID() const override;
protected:
/**
* Default constructor.
* @stable ICU 3.0
*/
MeasureFormat();
#ifndef U_HIDE_INTERNAL_API
/**
* ICU use only.
* Initialize or change MeasureFormat class from subclass.
* @internal.
*/
void initMeasureFormat(
const Locale &locale,
UMeasureFormatWidth width,
NumberFormat *nfToAdopt,
UErrorCode &status);
/**
* ICU use only.
* Allows subclass to change locale. Note that this method also changes
* the NumberFormat object. Returns true if locale changed; false if no
* change was made.
* @internal.
*/
UBool setMeasureFormatLocale(const Locale &locale, UErrorCode &status);
/**
* ICU use only.
* Let subclass change NumberFormat.
* @internal.
*/
void adoptNumberFormat(NumberFormat *nfToAdopt, UErrorCode &status);
/**
* ICU use only.
* @internal.
*/
const NumberFormat &getNumberFormatInternal() const;
/**
* ICU use only.
* Always returns the short form currency formatter.
* @internal.
*/
const NumberFormat& getCurrencyFormatInternal() const;
/**
* ICU use only.
* @internal.
*/
const PluralRules &getPluralRules() const;
/**
* ICU use only.
* @internal.
*/
Locale getLocale(UErrorCode &status) const;
/**
* ICU use only.
* @internal.
*/
const char *getLocaleID(UErrorCode &status) const;
#endif /* U_HIDE_INTERNAL_API */
private:
const MeasureFormatCacheData *cache;
const SharedNumberFormat *numberFormat;
const SharedPluralRules *pluralRules;
UMeasureFormatWidth fWidth;
// Declared outside of MeasureFormatSharedData because ListFormatter
// objects are relatively cheap to copy; therefore, they don't need to be
// shared across instances.
ListFormatter *listFormatter;
UnicodeString &formatMeasure(
const Measure &measure,
const NumberFormat &nf,
UnicodeString &appendTo,
FieldPosition &pos,
UErrorCode &status) const;
UnicodeString &formatMeasuresSlowTrack(
const Measure *measures,
int32_t measureCount,
UnicodeString& appendTo,
FieldPosition& pos,
UErrorCode& status) const;
UnicodeString &formatNumeric(
const Formattable *hms, // always length 3: [0] is hour; [1] is
// minute; [2] is second.
int32_t bitMap, // 1=hour set, 2=minute set, 4=second set
UnicodeString &appendTo,
UErrorCode &status) const;
};
U_NAMESPACE_END
#endif // #if !UCONFIG_NO_FORMATTING
#endif /* U_SHOW_CPLUSPLUS_API */
#endif // #ifndef MEASUREFORMAT_H