481 lines
16 KiB
C++
481 lines
16 KiB
C++
/*
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********************************************************************************
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* Copyright (C) 1997-2014, 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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#include "unicode/uchar.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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#include "unicode/unum.h"
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/**
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* \file
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* \brief C++ API: Symbols for formatting numbers.
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*/
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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 ICU 2.0
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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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/** Significant digit symbol
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* @stable ICU 3.0 */
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kSignificantDigitSymbol,
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/** The monetary grouping separator
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* @stable ICU 3.6
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*/
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kMonetaryGroupingSeparatorSymbol,
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/** One
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* @stable ICU 4.6
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*/
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kOneDigitSymbol,
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/** Two
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* @stable ICU 4.6
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*/
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kTwoDigitSymbol,
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/** Three
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* @stable ICU 4.6
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*/
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kThreeDigitSymbol,
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/** Four
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* @stable ICU 4.6
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*/
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kFourDigitSymbol,
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/** Five
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* @stable ICU 4.6
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*/
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kFiveDigitSymbol,
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/** Six
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* @stable ICU 4.6
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*/
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kSixDigitSymbol,
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/** Seven
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* @stable ICU 4.6
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*/
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kSevenDigitSymbol,
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/** Eight
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* @stable ICU 4.6
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*/
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kEightDigitSymbol,
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/** Nine
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* @stable ICU 4.6
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*/
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kNineDigitSymbol,
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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 ICU 2.0
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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 ICU 2.0
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*/
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DecimalFormatSymbols(UErrorCode& status);
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#ifndef U_HIDE_DRAFT_API
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/**
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* Creates a DecimalFormatSymbols object with last-resort data.
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* Intended for callers who cache the symbols data and
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* set all symbols on the resulting object.
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*
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* The last-resort symbols are similar to those for the root data,
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* except that the grouping separators are empty,
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* the NaN symbol is U+FFFD rather than "NaN",
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* and the CurrencySpacing patterns are empty.
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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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* @return last-resort symbols
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* @draft ICU 52
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*/
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static DecimalFormatSymbols* createWithLastResortData(UErrorCode& status);
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#endif /* U_HIDE_DRAFT_API */
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/**
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* Copy constructor.
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* @stable ICU 2.0
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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 ICU 2.0
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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 ICU 2.0
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*/
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virtual ~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 ICU 2.0
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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 ICU 2.0
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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 modifier 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 ICU 2.0
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*/
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inline 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 modifier 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 symbol
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* @param propogateDigits If false, setting the zero digit will not automatically set 1-9.
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* The default behavior is to automatically set 1-9 if zero is being set and the value
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* it is being set to corresponds to a known Unicode zero digit.
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* @stable ICU 2.0
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*/
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void setSymbol(ENumberFormatSymbol symbol, const UnicodeString &value, const UBool propogateDigits);
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/**
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* Returns the locale for which this object was constructed.
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* @stable ICU 2.6
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*/
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inline Locale getLocale() const;
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/**
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* Returns the locale for this object. Two flavors are available:
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* valid and actual locale.
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* @stable ICU 2.8
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*/
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Locale getLocale(ULocDataLocaleType type, UErrorCode& status) const;
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/**
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* Get pattern string for 'CurrencySpacing' that can be applied to
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* currency format.
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* This API gets the CurrencySpacing data from ResourceBundle. The pattern can
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* be empty if there is no data from current locale and its parent locales.
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*
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* @param type : UNUM_CURRENCY_MATCH, UNUM_CURRENCY_SURROUNDING_MATCH or UNUM_CURRENCY_INSERT.
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* @param beforeCurrency : true if the pattern is for before currency symbol.
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* false if the pattern is for after currency symbol.
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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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* @return pattern string for currencyMatch, surroundingMatch or spaceInsert.
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* Return empty string if there is no data for this locale and its parent
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* locales.
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* @stable ICU 4.8
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*/
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const UnicodeString& getPatternForCurrencySpacing(UCurrencySpacing type,
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UBool beforeCurrency,
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UErrorCode& status) const;
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/**
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* Set pattern string for 'CurrencySpacing' that can be applied to
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* currency format.
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*
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* @param type : UNUM_CURRENCY_MATCH, UNUM_CURRENCY_SURROUNDING_MATCH or UNUM_CURRENCY_INSERT.
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* @param beforeCurrency : true if the pattern is for before currency symbol.
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* false if the pattern is for after currency symbol.
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* @param pattern : pattern string to override current setting.
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* @stable ICU 4.8
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*/
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void setPatternForCurrencySpacing(UCurrencySpacing type,
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UBool beforeCurrency,
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const UnicodeString& pattern);
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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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* @stable ICU 2.2
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*/
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virtual UClassID getDynamicClassID() const;
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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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* @stable ICU 2.2
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*/
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static UClassID U_EXPORT2 getStaticClassID();
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private:
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DecimalFormatSymbols();
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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 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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* Note: moved #ifndef U_HIDE_INTERNAL_API after this, it is needed for inline in DecimalFormat
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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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#ifndef U_HIDE_INTERNAL_API
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/**
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* Returns that pattern stored in currecy info. Internal API for use by NumberFormat API.
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* @internal
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*/
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inline const UChar* getCurrencyPattern(void) const;
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#endif /* U_HIDE_INTERNAL_API */
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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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char actualLocale[ULOC_FULLNAME_CAPACITY];
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char validLocale[ULOC_FULLNAME_CAPACITY];
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const UChar* currPattern;
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UnicodeString currencySpcBeforeSym[UNUM_CURRENCY_SPACING_COUNT];
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UnicodeString currencySpcAfterSym[UNUM_CURRENCY_SPACING_COUNT];
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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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const UnicodeString *strPtr;
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if(symbol < kFormatSymbolCount) {
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strPtr = &fSymbols[symbol];
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} else {
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strPtr = &fNoSymbol;
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}
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return *strPtr;
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}
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#ifndef U_HIDE_INTERNAL_API
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inline const UnicodeString &
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DecimalFormatSymbols::getConstSymbol(ENumberFormatSymbol symbol) const {
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const UnicodeString *strPtr;
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if(symbol < kFormatSymbolCount) {
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strPtr = &fSymbols[symbol];
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} else {
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strPtr = &fNoSymbol;
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}
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return *strPtr;
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}
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#endif /* U_HIDE_INTERNAL_API */
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// -------------------------------------
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inline void
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DecimalFormatSymbols::setSymbol(ENumberFormatSymbol symbol, const UnicodeString &value, const UBool propogateDigits = TRUE) {
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if(symbol<kFormatSymbolCount) {
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fSymbols[symbol]=value;
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}
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// If the zero digit is being set to a known zero digit according to Unicode,
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// then we automatically set the corresponding 1-9 digits
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if ( propogateDigits && symbol == kZeroDigitSymbol && value.countChar32() == 1 ) {
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UChar32 sym = value.char32At(0);
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if ( u_charDigitValue(sym) == 0 ) {
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for ( int8_t i = 1 ; i<= 9 ; i++ ) {
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sym++;
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fSymbols[(int)kOneDigitSymbol+i-1] = UnicodeString(sym);
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}
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}
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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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#ifndef U_HIDE_INTERNAL_API
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inline const UChar*
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DecimalFormatSymbols::getCurrencyPattern() const {
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return currPattern;
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}
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#endif /* U_HIDE_INTERNAL_API */
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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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