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Added ICU library

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Sergii Pylypenko
2014-03-12 22:43:57 +02:00
parent 7f38724a03
commit 716d3df644
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project/jni/icuuc/include/unicode/compactdecimalformat.h Normal file
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/*
********************************************************************************
* Copyright (C) 2012-2013, International Business Machines
* Corporation and others. All Rights Reserved.
********************************************************************************
*
* File COMPACTDECIMALFORMAT.H
********************************************************************************
*/
#ifndef __COMPACT_DECIMAL_FORMAT_H__
#define __COMPACT_DECIMAL_FORMAT_H__
#include "unicode/utypes.h"
/**
* \file
* \brief C++ API: Formats decimal numbers in compact form.
*/
#if !UCONFIG_NO_FORMATTING
#ifndef U_HIDE_DRAFT_API
#include "unicode/decimfmt.h"
struct UHashtable;
U_NAMESPACE_BEGIN
class PluralRules;
/**
* The CompactDecimalFormat produces abbreviated numbers, suitable for display in
* environments will limited real estate. For example, 'Hits: 1.2B' instead of
* 'Hits: 1,200,000,000'. The format will be appropriate for the given language,
* such as "1,2 Mrd." for German.
* <p>
* For numbers under 1000 trillion (under 10^15, such as 123,456,789,012,345),
* the result will be short for supported languages. However, the result may
* sometimes exceed 7 characters, such as when there are combining marks or thin
* characters. In such cases, the visual width in fonts should still be short.
* <p>
* By default, there are 3 significant digits. After creation, if more than
* three significant digits are set (with setMaximumSignificantDigits), or if a
* fixed number of digits are set (with setMaximumIntegerDigits or
* setMaximumFractionDigits), then result may be wider.
* <p>
* At this time, parsing is not supported, and will produce a U_UNSUPPORTED_ERROR.
* Resetting the pattern prefixes or suffixes is not supported; the method calls
* are ignored.
* <p>
* @draft ICU 51
*/
class U_I18N_API CompactDecimalFormat : public DecimalFormat {
public:
/**
* Returns a compact decimal instance for specified locale.
* @param inLocale the given locale.
* @param style whether to use short or long style.
* @param status error code returned here.
* @draft ICU 51
*/
static CompactDecimalFormat* U_EXPORT2 createInstance(
const Locale& inLocale, UNumberCompactStyle style, UErrorCode& status);
/**
* Copy constructor.
*
* @param source the DecimalFormat object to be copied from.
* @draft ICU 51
*/
CompactDecimalFormat(const CompactDecimalFormat& source);
/**
* Destructor.
* @draft ICU 51
*/
virtual ~CompactDecimalFormat();
/**
* Assignment operator.
*
* @param rhs the DecimalFormat object to be copied.
* @draft ICU 51
*/
CompactDecimalFormat& operator=(const CompactDecimalFormat& rhs);
/**
* Clone this Format object polymorphically. The caller owns the
* result and should delete it when done.
*
* @return a polymorphic copy of this CompactDecimalFormat.
* @draft ICU 51
*/
virtual Format* clone() const;
/**
* 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.
* @draft ICU 51
*/
virtual UBool operator==(const Format& other) const;
using DecimalFormat::format;
/**
* Format a double or long number using base-10 representation.
*
* @param number The value to be formatted.
* @param appendTo Output parameter to receive result.
* Result is appended to existing contents.
* @param pos On input: an alignment field, if desired.
* On output: the offsets of the alignment field.
* @return Reference to 'appendTo' parameter.
* @draft ICU 51
*/
virtual UnicodeString& format(double number,
UnicodeString& appendTo,
FieldPosition& pos) const;
/**
* Format a double or long number using base-10 representation.
* Currently sets status to U_UNSUPPORTED_ERROR.
*
* @param number The value to be formatted.
* @param appendTo Output parameter to receive result.
* Result is appended to existing contents.
* @param posIter On return, can be used to iterate over positions
* of fields generated by this format call.
* Can be NULL.
* @param status Output param filled with success/failure status.
* @return Reference to 'appendTo' parameter.
* @internal
*/
virtual UnicodeString& format(double number,
UnicodeString& appendTo,
FieldPositionIterator* posIter,
UErrorCode& status) const;
/**
* Format an int64 number using base-10 representation.
*
* @param number The value to be formatted.
* @param appendTo Output parameter to receive result.
* Result is appended to existing contents.
* @param pos On input: an alignment field, if desired.
* On output: the offsets of the alignment field.
* @return Reference to 'appendTo' parameter.
* @draft ICU 51
*/
virtual UnicodeString& format(int64_t number,
UnicodeString& appendTo,
FieldPosition& pos) const;
/**
* Format an int64 number using base-10 representation.
* Currently sets status to U_UNSUPPORTED_ERROR
*
* @param number The value to be formatted.
* @param appendTo Output parameter to receive result.
* Result is appended to existing contents.
* @param posIter On return, can be used to iterate over positions
* of fields generated by this format call.
* Can be NULL.
* @param status Output param filled with success/failure status.
* @return Reference to 'appendTo' parameter.
* @internal
*/
virtual UnicodeString& format(int64_t number,
UnicodeString& appendTo,
FieldPositionIterator* posIter,
UErrorCode& status) const;
/**
* Format a decimal number. Currently sets status to U_UNSUPPORTED_ERROR
* The syntax of the unformatted number is a "numeric string"
* as defined in the Decimal Arithmetic Specification, available at
* http://speleotrove.com/decimal
*
* @param number The unformatted number, as a string.
* @param appendTo Output parameter to receive result.
* Result is appended to existing contents.
* @param posIter On return, can be used to iterate over positions
* of fields generated by this format call.
* Can be NULL.
* @param status Output param filled with success/failure status.
* @return Reference to 'appendTo' parameter.
* @internal
*/
virtual UnicodeString& format(const StringPiece &number,
UnicodeString& appendTo,
FieldPositionIterator* posIter,
UErrorCode& status) const;
/**
* Format a decimal number. Currently sets status to U_UNSUPPORTED_ERROR
* The number is a DigitList wrapper onto a floating point decimal number.
* The default implementation in NumberFormat converts the decimal number
* to a double and formats that.
*
* @param number The number, a DigitList format Decimal Floating Point.
* @param appendTo Output parameter to receive result.
* Result is appended to existing contents.
* @param posIter On return, can be used to iterate over positions
* of fields generated by this format call.
* @param status Output param filled with success/failure status.
* @return Reference to 'appendTo' parameter.
* @internal
*/
virtual UnicodeString& format(const DigitList &number,
UnicodeString& appendTo,
FieldPositionIterator* posIter,
UErrorCode& status) const;
/**
* Format a decimal number. Currently sets status to U_UNSUPPORTED_ERROR.
* The number is a DigitList wrapper onto a floating point decimal number.
* The default implementation in NumberFormat converts the decimal number
* to a double and formats that.
*
* @param number The number, a DigitList format Decimal Floating Point.
* @param appendTo Output parameter to receive result.
* Result is appended to existing contents.
* @param pos On input: an alignment field, if desired.
* On output: the offsets of the alignment field.
* @param status Output param filled with success/failure status.
* @return Reference to 'appendTo' parameter.
* @internal
*/
virtual UnicodeString& format(const DigitList &number,
UnicodeString& appendTo,
FieldPosition& pos,
UErrorCode& status) const;
/**
* CompactDecimalFormat does not support parsing. This implementation
* does nothing.
* @param text Unused.
* @param result Does not change.
* @param parsePosition Does not change.
* @see Formattable
* @draft ICU 51
*/
virtual void parse(const UnicodeString& text,
Formattable& result,
ParsePosition& parsePosition) const;
/**
* CompactDecimalFormat does not support parsing. This implementation
* sets status to U_UNSUPPORTED_ERROR
*
* @param text Unused.
* @param result Does not change.
* @param status Always set to U_UNSUPPORTED_ERROR.
* @draft ICU 51
*/
virtual void parse(const UnicodeString& text,
Formattable& result,
UErrorCode& status) const;
/* Cannot use #ifndef U_HIDE_INTERNAL_API for the following draft method since it is virtual */
/**
* Parses text from the given string as a currency amount. Unlike
* the parse() method, this method will attempt to parse a generic
* currency name, searching for a match of this object's locale's
* currency display names, or for a 3-letter ISO currency code.
* This method will fail if this format is not a currency format,
* that is, if it does not contain the currency pattern symbol
* (U+00A4) in its prefix or suffix. This implementation always returns
* NULL.
*
* @param text the string to parse
* @param pos input-output position; on input, the position within text
* to match; must have 0 <= pos.getIndex() < text.length();
* on output, the position after the last matched character.
* If the parse fails, the position in unchanged upon output.
* @return if parse succeeds, a pointer to a newly-created CurrencyAmount
* object (owned by the caller) containing information about
* the parsed currency; if parse fails, this is NULL.
* @internal
*/
virtual CurrencyAmount* parseCurrency(const UnicodeString& text,
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() ==
* . Derived::getStaticClassID()) ...
* </pre>
* @return The class ID for all objects of this class.
* @draft ICU 51
*/
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.
* @draft ICU 51
*/
virtual UClassID getDynamicClassID() const;
private:
const UHashtable* _unitsByVariant;
const double* _divisors;
PluralRules* _pluralRules;
// Default constructor not implemented.
CompactDecimalFormat(const DecimalFormat &, const UHashtable* unitsByVariant, const double* divisors, PluralRules* pluralRules);
UBool eqHelper(const CompactDecimalFormat& that) const;
};
U_NAMESPACE_END
#endif /* U_HIDE_DRAFT_API */
#endif /* #if !UCONFIG_NO_FORMATTING */
#endif // __COMPACT_DECIMAL_FORMAT_H__
//eof