// © 2016 and later: Unicode, Inc. and others.
// License & terms of use: http://www.unicode.org/copyright.html
/*
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* Copyright ( C ) 1997 - 2016 , International Business Machines
* Corporation and others . All Rights Reserved .
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
*
* File DCFMTSYM . H
*
* Modification History :
*
* Date Name Description
* 02 / 19 / 97 aliu Converted from java .
* 03 / 18 / 97 clhuang Updated per C + + implementation .
* 03 / 27 / 97 helena Updated to pass the simple test after code review .
* 08 / 26 / 97 aliu Added currency / intl currency symbol support .
* 07 / 22 / 98 stephen Changed to match C + + style
* currencySymbol - > fCurrencySymbol
* Constants changed from CAPS to kCaps
* 06 / 24 / 99 helena Integrated Alan ' s NF enhancements and Java2 bug fixes
* 09 / 22 / 00 grhoten Marked deprecation tags with a pointer to replacement
* functions .
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
*/
#ifndef DCFMTSYM_H
#define DCFMTSYM_H
#include "unicode/utypes.h"
#if U_SHOW_CPLUSPLUS_API
#if !UCONFIG_NO_FORMATTING
#include "unicode/uchar.h"
#include "unicode/uobject.h"
#include "unicode/locid.h"
#include "unicode/numsys.h"
#include "unicode/unum.h"
#include "unicode/unistr.h"
/**
* \ file
* \ brief C + + API : Symbols for formatting numbers .
*/
U_NAMESPACE_BEGIN
/**
* This class represents the set of symbols needed by DecimalFormat
* to format numbers . DecimalFormat creates for itself an instance of
* DecimalFormatSymbols from its locale data . If you need to change any
* of these symbols , you can get the DecimalFormatSymbols object from
* your DecimalFormat and modify it .
* < P >
* Here are the special characters used in the parts of the
* subpattern , with notes on their usage .
* < pre >
* \ code
* Symbol Meaning
* 0 a digit
* # a digit , zero shows as absent
* . placeholder for decimal separator
* , placeholder for grouping separator .
* ; separates formats .
* - default negative prefix .
* % divide by 100 and show as percentage
* X any other characters can be used in the prefix or suffix
* ' used to quote special characters in a prefix or suffix .
* \ endcode
* < / pre >
* [ Notes ]
* < P >
* If there is no explicit negative subpattern , - is prefixed to the
* positive form . That is , " 0 . 00 " alone is equivalent to " 0 . 00 ; - 0 . 00 " .
* < P >
* The grouping separator is commonly used for thousands , but in some
* countries for ten - thousands . The interval is a constant number of
* digits between the grouping characters , such as 100 , 000 , 000 or 1 , 0000 , 0000 .
* If you supply a pattern with multiple grouping characters , the interval
* between the last one and the end of the integer is the one that is
* used . So " # , # # , # # # , # # # # " = = " # # # # # # , # # # # " = = " # # , # # # # , # # # # " .
*/
class U_I18N_API DecimalFormatSymbols :
public UObject {
public :
/**
* Constants for specifying a number format symbol .
* @ stable ICU 2 . 0
*/
enum ENumberFormatSymbol {
/** The decimal separator */
kDecimalSeparatorSymbol,
/** The grouping separator */
kGroupingSeparatorSymbol,
/** The pattern separator */
kPatternSeparatorSymbol,
/** The percent sign */
kPercentSymbol,
/** Zero*/
kZeroDigitSymbol,
/** Character representing a digit in the pattern */
kDigitSymbol,
/** The minus sign */
kMinusSignSymbol,
/** The plus sign */
kPlusSignSymbol,
/** The currency symbol */
kCurrencySymbol,
/** The international currency symbol */
kIntlCurrencySymbol,
/** The monetary separator */
kMonetarySeparatorSymbol,
/** The exponential symbol */
kExponentialSymbol,
/** Per mill symbol - replaces kPermillSymbol */
kPerMillSymbol,
/** Escape padding character */
kPadEscapeSymbol,
/** Infinity symbol */
kInfinitySymbol,
/** Nan symbol */
kNaNSymbol,
/** Significant digit symbol
* @stable ICU 3.0 */
kSignificantDigitSymbol,
/** The monetary grouping separator
* @ stable ICU 3 . 6
*/
kMonetaryGroupingSeparatorSymbol,
/** One
* @ stable ICU 4 . 6
*/
kOneDigitSymbol,
/** Two
* @ stable ICU 4 . 6
*/
kTwoDigitSymbol,
/** Three
* @ stable ICU 4 . 6
*/
kThreeDigitSymbol,
/** Four
* @ stable ICU 4 . 6
*/
kFourDigitSymbol,
/** Five
* @ stable ICU 4 . 6
*/
kFiveDigitSymbol,
/** Six
* @ stable ICU 4 . 6
*/
kSixDigitSymbol,
/** Seven
* @ stable ICU 4 . 6
*/
kSevenDigitSymbol,
/** Eight
* @ stable ICU 4 . 6
*/
kEightDigitSymbol,
/** Nine
* @ stable ICU 4 . 6
*/
kNineDigitSymbol,
/** Multiplication sign.
* @ stable ICU 54
*/
kExponentMultiplicationSymbol,
#ifndef U_HIDE_INTERNAL_API
/** Approximately sign.
* @ internal
*/
kApproximatelySignSymbol,
#endif /* U_HIDE_INTERNAL_API */
/** count symbol constants */
kFormatSymbolCount = kExponentMultiplicationSymbol +
2
};
/**
* Create a DecimalFormatSymbols object for the given locale .
*
* @ param locale The locale to get symbols for .
* @ param status Input / output parameter , set to success or
* failure code upon return .
* @ stable ICU 2 . 0
*/
DecimalFormatSymbols(
const Locale& locale, UErrorCode& status);
/**
* Creates a DecimalFormatSymbols instance for the given locale with digits and symbols
* corresponding to the given NumberingSystem .
*
* This constructor behaves equivalently to the normal constructor called with a locale having a
* " numbers = xxxx " keyword specifying the numbering system by name .
*
* In this constructor , the NumberingSystem argument will be used even if the locale has its own
* " numbers = xxxx " keyword .
*
* @ param locale The locale to get symbols for .
* @ param ns The numbering system .
* @ param status Input / output parameter , set to success or
* failure code upon return .
* @ stable ICU 60
*/
DecimalFormatSymbols(
const Locale& locale,
const NumberingSystem& ns, UErrorCo
de& status);
/**
* Create a DecimalFormatSymbols object for the default locale .
* This constructor will not fail . If the resource file data is
* not available , it will use hard - coded last - resort data and
* set status to U_USING_FALLBACK_ERROR .
*
* @ param status Input / output parameter , set to success or
* failure code upon return .
* @ stable ICU 2 . 0
*/
DecimalFormatSymbols(UErrorCode& status);
/**
* Creates a DecimalFormatSymbols object with last - resort data .
* Intended for callers who cache the symbols data and
* set all symbols on the resulting object .
*
* The last - resort symbols are similar to those for the root data ,
* except that the grouping separators are empty ,
* the NaN symbol is U + FFFD rather than " NaN " ,
* and the CurrencySpacing patterns are empty .
*
* @ param status Input / output parameter , set to success or
* failure code upon return .
* @ return last - resort symbols
* @ stable ICU 52
*/
static DecimalFormatSymbols* createWithLastResortData(UErrorCode& status);
/**
* Copy constructor .
* @ stable ICU 2 . 0
*/
DecimalFormatSymbols(const DecimalFormatSymbols&);
/**
* Assignment operator .
* @ stable ICU 2 . 0
*/
DecimalFormatSymbols& operator =(const DecimalFormatSymbols&);
/**
* Destructor .
* @ stable ICU 2 . 0
*/
virtual ~DecimalFormatSymbols();
/**
* Return true if another object is semantically equal to this one .
*
* @ param other the object to be compared with .
* @ return true if another object is semantically equal to this one .
* @ stable ICU 2 . 0
*/
bool operator ==(const DecimalFormatSymbols& other) const ;
/**
* Return true if another object is semantically unequal to this one .
*
* @ param other the object to be compared with .
* @ return true if another object is semantically unequal to this one .
* @ stable ICU 2 . 0
*/
bool operator !=(const DecimalFormatSymbols& other) const { return !operator ==(other); }
/**
* Get one of the format symbols by its enum constant .
* Each symbol is stored as a string so that graphemes
* ( characters with modifier letters ) can be used .
*
* @ param symbol Constant to indicate a number format symbol .
* @ return the format symbols by the param ' symbol '
* @ stable ICU 2 . 0
*/
inline UnicodeString getSymbol(ENumberFormatSymbol symbol) const ;
/**
* Set one of the format symbols by its enum constant .
* Each symbol is stored as a string so that graphemes
* ( characters with modifier letters ) can be used .
*
* @ param symbol Constant to indicate a number format symbol .
* @ param value value of the format symbol
* @ param propagateDigits If false , setting the zero digit will not automatically set 1 - 9 .
* The default behavior is to automatically set 1 - 9 if zero is being set and the value
* it is being set to corresponds to a known Unicode zero digit .
* @ stable ICU 2 . 0
*/
void setSymbol(ENumberFormatSymbol symbol, const UnicodeString &value, const UBool propagateDigits);
#ifndef U_HIDE_INTERNAL_API
/**
* Loads symbols for the specified currency into this instance .
*
* This method is internal . If you think it should be public , file a ticket .
*
* @ internal
*/
void setCurrency(const char16_t* currency, UErrorCode& status);
#endif // U_HIDE_INTERNAL_API
/**
* Returns the locale for which this object was constructed .
* @ stable ICU 2 . 6
*/
inline Locale getLocale() const ;
/**
* Returns the locale for this object . Two flavors are available :
* valid and actual locale .
* @ stable ICU 2 . 8
*/
Locale getLocale(ULocDataLocaleType type, UErrorCode& status) const ;
/**
* Get pattern string for ' CurrencySpacing ' that can be applied to
* currency format .
* This API gets the CurrencySpacing data from ResourceBundle . The pattern can
* be empty if there is no data from current locale and its parent locales .
*
* @ param type : UNUM_CURRENCY_MATCH , UNUM_CURRENCY_SURROUNDING_MATCH or UNUM_CURRENCY_INSERT .
* @ param beforeCurrency : true if the pattern is for before currency symbol .
* false if the pattern is for after currency symbol .
* @ param status : Input / output parameter , set to success or
* failure code upon return .
* @ return pattern string for currencyMatch , surroundingMatch or spaceInsert .
* Return empty string if there is no data for this locale and its parent
* locales .
* @ stable ICU 4 . 8
*/
const UnicodeString& getPatternForCurrencySpacing(UCurrencySpacing type,
UBool beforeCurrency,
UErrorCode& status) const ;
/**
* Set pattern string for ' CurrencySpacing ' that can be applied to
* currency format .
*
* @ param type : UNUM_CURRENCY_MATCH , UNUM_CURRENCY_SURROUNDING_MATCH or UNUM_CURRENCY_INSERT .
* @ param beforeCurrency : true if the pattern is for before currency symbol .
* false if the pattern is for after currency symbol .
* @ param pattern : pattern string to override current setting .
* @ stable ICU 4 . 8
*/
void setPatternForCurrencySpacing(UCurrencySpacing type,
UBool beforeCurrency,
const UnicodeString& pattern);
/**
* ICU " poor man ' s RTTI " , returns a UClassID for the actual class .
*
* @ stable ICU 2 . 2
*/
virtual UClassID getDynamicClassID() const override;
/**
* ICU " poor man ' s RTTI " , returns a UClassID for this class .
*
* @ stable ICU 2 . 2
*/
static UClassID U_EXPORT2 getStaticClassID();
private :
DecimalFormatSymbols();
/**
* Initializes the symbols from the LocaleElements resource bundle .
* Note : The organization of LocaleElements badly needs to be
* cleaned up .
*
* @ param locale The locale to get symbols for .
* @ param success Input / output parameter , set to success or
* failure code upon return .
* @ param useLastResortData determine if use last resort data
* @ param ns The NumberingSystem to use ; otherwise , fall
* back to the locale .
*/
void initialize(const Locale& locale, UErrorCode& success,
UBool useLastResortData = false , const NumberingSystem* ns = nullptr);
/**
* Initialize the symbols with default values .
*/
void initialize();
public :
#ifndef U_HIDE_INTERNAL_API
/**
* @ internal For ICU use only
*/
inline UBool isCustomCurrencySymbol() const {
return fIsCustomCurrencySymbol;
}
/**
* @ internal For ICU use only
*/
inline UBool isCustomIntlCurrencySymbol() const {
return fIsCustomIntlCurrencySymbol;
}
/**
* @ internal For ICU use only
*/
inline UChar32 getCodePointZero() const {
return fCodePointZero;
}
#endif /* U_HIDE_INTERNAL_API */
/**
* _ Internal_ function - more efficient version of getSymbol ,
* returning a const reference to one of the symbol strings .
* The returned reference becomes invalid when the symbol is changed
* or when the DecimalFormatSymbols are destroyed .
* Note : moved \ # ifndef U_HIDE_INTERNAL_API after this , since this is needed for inline in DecimalFormat
*
* This is not currently stable API , but if you think it should be stable ,
* post a comment on the following ticket and the ICU team will take a look :
* https : //unicode-org.atlassian.net/browse/ICU-13580
*
* @ param symbol Constant to indicate a number format symbol .
* @ return the format symbol by the param ' symbol '
* @ internal
*/
inline const UnicodeString& getConstSymbol(ENumberFormatSymbol symbol) const ;
#ifndef U_HIDE_INTERNAL_API
/**
* Returns the const UnicodeString reference , like getConstSymbol ,
* corresponding to the digit with the given value . This is equivalent
* to accessing the symbol from getConstSymbol with the corresponding
* key , such as kZeroDigitSymbol or kOneDigitSymbol .
*
* This is not currently stable API , but if you think it should be stable ,
* post a comment on the following ticket and the ICU team will take a look :
* https : //unicode-org.atlassian.net/browse/ICU-13580
*
* @ param digit The digit , an integer between 0 and 9 inclusive .
* If outside the range 0 to 9 , the zero digit is returned .
* @ return the format symbol for the given digit .
* @ internal This API is currently for ICU use only .
*/
inline const UnicodeString& getConstDigitSymbol(int32_t digit) const ;
/**
* Returns that pattern stored in currency info . Internal API for use by NumberFormat API .
* @ internal
*/
inline const char16_t* getCurrencyPattern() const ;
/**
* Returns the numbering system with which this DecimalFormatSymbols was initialized .
* @ internal
*/
inline const char * getNumberingSystemName() const ;
#endif /* U_HIDE_INTERNAL_API */
private :
/**
* Private symbol strings .
* They are either loaded from a resource bundle or otherwise owned .
* setSymbol ( ) clones the symbol string .
* Readonly aliases can only come from a resource bundle , so that we can always
* use fastCopyFrom ( ) with them .
*
* If DecimalFormatSymbols becomes subclassable and the status of fSymbols changes
* from private to protected ,
* or when fSymbols can be set any other way that allows them to be readonly aliases
* to non - resource bundle strings ,
* then regular UnicodeString copies must be used instead of fastCopyFrom ( ) .
*
*/
UnicodeString fSymbols[kFormatSymbolCount];
/**
* Non - symbol variable for getConstSymbol ( ) . Always empty .
*/
UnicodeString fNoSymbol;
/**
* Dealing with code points is faster than dealing with strings when formatting . Because of
* this , we maintain a value containing the zero code point that is used whenever digitStrings
* represents a sequence of ten code points in order .
*
* < p > If the value stored here is positive , it means that the code point stored in this value
* corresponds to the digitStrings array , and codePointZero can be used instead of the
* digitStrings array for the purposes of efficient formatting ; if - 1 , then digitStrings does
* * not * contain a sequence of code points , and it must be used directly .
*
* < p > It is assumed that codePointZero always shadows the value in digitStrings . codePointZero
* should never be set directly ; rather , it should be updated only when digitStrings mutates .
* That is , the flow of information is digitStrings - > codePointZero , not the other way .
*/
UChar32 fCodePointZero;
Locale locale;
char actualLocale[ULOC_FULLNAME_CAPACITY];
char validLocale[ULOC_FULLNAME_CAPACITY];
const char16_t* currPattern = nullptr;
UnicodeString currencySpcBeforeSym[UNUM_CURRENCY_SPACING_COUNT];
UnicodeString currencySpcAfterSym[UNUM_CURRENCY_SPACING_COUNT];
UBool fIsCustomCurrencySymbol;
UBool fIsCustomIntlCurrencySymbol;
char nsName[kInternalNumSysNameCapacity+1 ] = {};
};
// -------------------------------------
inline UnicodeString
DecimalFormatSymbols::getSymbol(ENumberFormatSymbol symbol) const {
const UnicodeString *strPtr;
if (symbol < kFormatSymbolCount) {
strPtr = &fSymbols[symbol];
} else {
strPtr = &fNoSymbol;
}
return *strPtr;
}
// See comments above for this function. Not hidden with #ifdef U_HIDE_INTERNAL_API
inline const UnicodeString &
DecimalFormatSymbols::getConstSymbol(ENumberFormatSymbol symbol) const {
const UnicodeString *strPtr;
if (symbol < kFormatSymbolCount) {
strPtr = &fSymbols[symbol];
} else {
strPtr = &fNoSymbol;
}
return *strPtr;
}
#ifndef U_HIDE_INTERNAL_API
inline const UnicodeString& DecimalFormatSymbols::getConstDigitSymbol(int32_t digit) const {
if (digit < 0 || digit > 9 ) {
digit = 0 ;
}
if (digit == 0 ) {
return fSymbols[kZeroDigitSymbol];
}
ENumberFormatSymbol key = static_cast <ENumberFormatSymbol>(kOneDigitSymbol + digit - 1 );
return fSymbols[key];
}
#endif /* U_HIDE_INTERNAL_API */
// -------------------------------------
inline void
DecimalFormatSymbols::setSymbol(ENumberFormatSymbol symbol, const UnicodeString &value, const UBool propagateDigits = true ) {
if (symbol == kCurrencySymbol) {
fIsCustomCurrencySymbol = true ;
}
else if (symbol == kIntlCurrencySymbol) {
fIsCustomIntlCurrencySymbol = true ;
}
if (symbol<kFormatSymbolCount) {
fSymbols[symbol]=value;
}
// If the zero digit is being set to a known zero digit according to Unicode,
// then we automatically set the corresponding 1-9 digits
// Also record updates to fCodePointZero. Be conservative if in doubt.
if (symbol == kZeroDigitSymbol) {
UChar32 sym = value.char32At(0 );
if ( propagateDigits && u_charDigitValue(sym) == 0 && value.countChar32() == 1 ) {
fCodePointZero = sym;
for ( int8_t i = 1 ; i<= 9 ; i++ ) {
sym++;
fSymbols[static_cast <int >(kOneDigitSymbol) + i - 1 ] = UnicodeString(sym);
}
} else {
fCodePointZero = -1 ;
}
} else if (symbol >= kOneDigitSymbol && symbol <= kNineDigitSymbol) {
fCodePointZero = -1 ;
}
}
// -------------------------------------
inline Locale
DecimalFormatSymbols::getLocale() const {
return locale;
}
#ifndef U_HIDE_INTERNAL_API
inline const char16_t*
DecimalFormatSymbols::getCurrencyPattern() const {
return currPattern;
}
inline const char *
DecimalFormatSymbols::getNumberingSystemName() const {
return nsName;
}
#endif /* U_HIDE_INTERNAL_API */
U_NAMESPACE_END
#endif /* #if !UCONFIG_NO_FORMATTING */
#endif /* U_SHOW_CPLUSPLUS_API */
#endif // _DCFMTSYM
//eof
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