342 lines
11 KiB
C++
342 lines
11 KiB
C++
/*
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********************************************************************************
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* Copyright (C) 1997-1999, International Business Machines
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* Corporation and others. All Rights Reserved.
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********************************************************************************
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*
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* File DCFMTSYM.H
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*
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* Modification History:
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*
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* Date Name Description
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* 02/19/97 aliu Converted from java.
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* 03/18/97 clhuang Updated per C++ implementation.
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* 03/27/97 helena Updated to pass the simple test after code review.
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* 08/26/97 aliu Added currency/intl currency symbol support.
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* 07/22/98 stephen Changed to match C++ style
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* currencySymbol -> fCurrencySymbol
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* Constants changed from CAPS to kCaps
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* 06/24/99 helena Integrated Alan's NF enhancements and Java2 bug fixes
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* 09/22/00 grhoten Marked deprecation tags with a pointer to replacement
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* functions.
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********************************************************************************
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*/
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#ifndef DCFMTSYM_H
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#define DCFMTSYM_H
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#include "unicode/utypes.h"
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#if !UCONFIG_NO_FORMATTING
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#include "unicode/uobject.h"
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#include "unicode/locid.h"
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U_NAMESPACE_BEGIN
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/**
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* This class represents the set of symbols needed by DecimalFormat
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* to format numbers. DecimalFormat creates for itself an instance of
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* DecimalFormatSymbols from its locale data. If you need to change any
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* of these symbols, you can get the DecimalFormatSymbols object from
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* your DecimalFormat and modify it.
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* <P>
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* Here are the special characters used in the parts of the
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* subpattern, with notes on their usage.
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* <pre>
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* \code
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* Symbol Meaning
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* 0 a digit
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* # a digit, zero shows as absent
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* . placeholder for decimal separator
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* , placeholder for grouping separator.
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* ; separates formats.
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* - default negative prefix.
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* % divide by 100 and show as percentage
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* X any other characters can be used in the prefix or suffix
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* ' used to quote special characters in a prefix or suffix.
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* \endcode
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* </pre>
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* [Notes]
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* <P>
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* If there is no explicit negative subpattern, - is prefixed to the
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* positive form. That is, "0.00" alone is equivalent to "0.00;-0.00".
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* <P>
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* The grouping separator is commonly used for thousands, but in some
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* countries for ten-thousands. The interval is a constant number of
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* digits between the grouping characters, such as 100,000,000 or 1,0000,0000.
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* If you supply a pattern with multiple grouping characters, the interval
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* between the last one and the end of the integer is the one that is
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* used. So "#,##,###,####" == "######,####" == "##,####,####".
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* <P>
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* This class only handles localized digits where the 10 digits are
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* contiguous in Unicode, from 0 to 9. Other digits sets (such as
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* superscripts) would need a different subclass.
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*/
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class U_I18N_API DecimalFormatSymbols : public UObject {
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public:
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/**
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* Constants for specifying a number format symbol.
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* @stable
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*/
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enum ENumberFormatSymbol {
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/** The decimal separator */
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kDecimalSeparatorSymbol,
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/** The grouping separator */
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kGroupingSeparatorSymbol,
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/** The pattern separator */
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kPatternSeparatorSymbol,
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/** The percent sign */
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kPercentSymbol,
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/** Zero*/
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kZeroDigitSymbol,
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/** Character representing a digit in the pattern */
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kDigitSymbol,
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/** The minus sign */
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kMinusSignSymbol,
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/** The plus sign */
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kPlusSignSymbol,
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/** The currency symbol */
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kCurrencySymbol,
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/** The international currency symbol */
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kIntlCurrencySymbol,
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/** The monetary separator */
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kMonetarySeparatorSymbol,
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/** The exponential symbol */
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kExponentialSymbol,
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/** Per mill symbol - replaces kPermillSymbol */
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kPerMillSymbol,
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/** Escape padding character */
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kPadEscapeSymbol,
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/** Infinity symbol */
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kInfinitySymbol,
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/** Nan symbol */
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kNaNSymbol,
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/** count symbol constants */
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kFormatSymbolCount
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};
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/**
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* Create a DecimalFormatSymbols object for the given locale.
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*
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* @param locale The locale to get symbols for.
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* @param status Input/output parameter, set to success or
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* failure code upon return.
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* @stable
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*/
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DecimalFormatSymbols(const Locale& locale, UErrorCode& status);
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/**
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* Create a DecimalFormatSymbols object for the default locale.
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* This constructor will not fail. If the resource file data is
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* not available, it will use hard-coded last-resort data and
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* set status to U_USING_FALLBACK_ERROR.
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*
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* @param status Input/output parameter, set to success or
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* failure code upon return.
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* @stable
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*/
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DecimalFormatSymbols( UErrorCode& status);
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/**
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* Copy constructor.
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* @stable
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*/
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DecimalFormatSymbols(const DecimalFormatSymbols&);
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/**
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* Assignment operator.
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* @stable
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*/
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DecimalFormatSymbols& operator=(const DecimalFormatSymbols&);
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/**
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* Destructor.
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* @stable
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*/
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~DecimalFormatSymbols();
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/**
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* Return true if another object is semantically equal to this one.
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*
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* @param other the object to be compared with.
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* @return true if another object is semantically equal to this one.
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* @stable
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*/
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UBool operator==(const DecimalFormatSymbols& other) const;
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/**
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* Return true if another object is semantically unequal to this one.
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*
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* @param other the object to be compared with.
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* @return true if another object is semantically unequal to this one.
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* @stable
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*/
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UBool operator!=(const DecimalFormatSymbols& other) const { return !operator==(other); }
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/**
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* Get one of the format symbols by its enum constant.
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* Each symbol is stored as a string so that graphemes
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* (characters with modifyer letters) can be used.
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*
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* @param symbol Constant to indicate a number format symbol.
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* @return the format symbols by the param 'symbol'
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* @stable
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*/
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UnicodeString getSymbol(ENumberFormatSymbol symbol) const;
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/**
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* Set one of the format symbols by its enum constant.
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* Each symbol is stored as a string so that graphemes
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* (characters with modifyer letters) can be used.
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*
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* @param symbol Constant to indicate a number format symbol.
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* @param value value of the format sybmol
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* @stable
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*/
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void setSymbol(ENumberFormatSymbol symbol, UnicodeString value);
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/**
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* Returns the locale for which this object was constructed.
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*/
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inline Locale getLocale() const;
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/**
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* ICU "poor man's RTTI", returns a UClassID for the actual class.
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*
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* @draft ICU 2.2
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*/
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virtual inline UClassID getDynamicClassID() const { return getStaticClassID(); }
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/**
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* ICU "poor man's RTTI", returns a UClassID for this class.
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*
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* @draft ICU 2.2
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*/
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static inline UClassID getStaticClassID() { return (UClassID)&fgClassID; }
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private:
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/**
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* Initializes the symbols from the LocaleElements resource bundle.
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* Note: The organization of LocaleElements badly needs to be
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* cleaned up.
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*
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* @param locale The locale to get symbols for.
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* @param success Input/output parameter, set to success or
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* failure code upon return.
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* @param useLastResortData determine if use last resort data
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*/
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void initialize(const Locale& locale, UErrorCode& success, UBool useLastResortData = FALSE);
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/**
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* Initialize the symbols from the given array of UnicodeStrings.
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* The array must be of the correct size.
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*
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* @param numberElements the number format symbols
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* @param currencyElements the currency symbols
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*/
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void initialize(const UnicodeString* numberElements, const UnicodeString* currencyElements);
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/**
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* Initialize the symbols with default values.
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*/
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void initialize();
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void setCurrencyForSymbols();
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public:
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/**
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* _Internal_ function - more efficient version of getSymbol,
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* returning a const reference to one of the symbol strings.
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* The returned reference becomes invalid when the symbol is changed
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* or when the DecimalFormatSymbols are destroyed.
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* ### TODO markus 2002oct11: Consider proposing getConstSymbol() to be really public.
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*
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* @param symbol Constant to indicate a number format symbol.
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* @return the format symbol by the param 'symbol'
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* @internal
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*/
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inline const UnicodeString &getConstSymbol(ENumberFormatSymbol symbol) const;
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private:
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/**
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* Private symbol strings.
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* They are either loaded from a resource bundle or otherwise owned.
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* setSymbol() clones the symbol string.
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* Readonly aliases can only come from a resource bundle, so that we can always
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* use fastCopyFrom() with them.
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*
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* If DecimalFormatSymbols becomes subclassable and the status of fSymbols changes
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* from private to protected,
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* or when fSymbols can be set any other way that allows them to be readonly aliases
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* to non-resource bundle strings,
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* then regular UnicodeString copies must be used instead of fastCopyFrom().
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*
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* @internal
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*/
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UnicodeString fSymbols[kFormatSymbolCount];
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/**
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* Non-symbol variable for getConstSymbol(). Always empty.
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* @internal
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*/
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UnicodeString fNoSymbol;
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Locale locale;
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static const char fgNumberElements[];
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static const char fgCurrencyElements[];
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/**
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* The address of this static class variable serves as this class's ID
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* for ICU "poor man's RTTI".
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*/
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static const char fgClassID;
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};
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// -------------------------------------
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inline UnicodeString
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DecimalFormatSymbols::getSymbol(ENumberFormatSymbol symbol) const {
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if(symbol<kFormatSymbolCount) {
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return fSymbols[symbol];
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} else {
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return UnicodeString();
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}
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}
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inline const UnicodeString &
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DecimalFormatSymbols::getConstSymbol(ENumberFormatSymbol symbol) const {
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if(symbol<kFormatSymbolCount) {
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return fSymbols[symbol];
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} else {
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return fNoSymbol;
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}
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}
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// -------------------------------------
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/* TODO: This should use "const UnicodeString &value" */
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inline void
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DecimalFormatSymbols::setSymbol(ENumberFormatSymbol symbol, UnicodeString value) {
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if(symbol<kFormatSymbolCount) {
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fSymbols[symbol]=value;
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}
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}
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// -------------------------------------
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inline Locale
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DecimalFormatSymbols::getLocale() const {
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return locale;
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}
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U_NAMESPACE_END
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#endif /* #if !UCONFIG_NO_FORMATTING */
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#endif // _DCFMTSYM
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//eof
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