1 // Copyright (C) 2016 and later: Unicode, Inc. and others.
2 // License & terms of use: http://www.unicode.org/copyright.html
4 ********************************************************************************
5 * Copyright (C) 1997-2016, International Business Machines
6 * Corporation and others. All Rights Reserved.
7 ********************************************************************************
11 * Modification History:
13 * Date Name Description
14 * 02/19/97 aliu Converted from java.
15 * 03/18/97 clhuang Updated per C++ implementation.
16 * 03/27/97 helena Updated to pass the simple test after code review.
17 * 08/26/97 aliu Added currency/intl currency symbol support.
18 * 07/22/98 stephen Changed to match C++ style
19 * currencySymbol -> fCurrencySymbol
20 * Constants changed from CAPS to kCaps
21 * 06/24/99 helena Integrated Alan's NF enhancements and Java2 bug fixes
22 * 09/22/00 grhoten Marked deprecation tags with a pointer to replacement
24 ********************************************************************************
30 #include "unicode/utypes.h"
31 #include "unicode/uchar.h"
33 #if !UCONFIG_NO_FORMATTING
35 #include "unicode/uobject.h"
36 #include "unicode/locid.h"
37 #include "unicode/unum.h"
41 * \brief C++ API: Symbols for formatting numbers.
48 * This class represents the set of symbols needed by DecimalFormat
49 * to format numbers. DecimalFormat creates for itself an instance of
50 * DecimalFormatSymbols from its locale data. If you need to change any
51 * of these symbols, you can get the DecimalFormatSymbols object from
52 * your DecimalFormat and modify it.
54 * Here are the special characters used in the parts of the
55 * subpattern, with notes on their usage.
60 * # a digit, zero shows as absent
61 * . placeholder for decimal separator
62 * , placeholder for grouping separator.
63 * ; separates formats.
64 * - default negative prefix.
65 * % divide by 100 and show as percentage
66 * X any other characters can be used in the prefix or suffix
67 * ' used to quote special characters in a prefix or suffix.
72 * If there is no explicit negative subpattern, - is prefixed to the
73 * positive form. That is, "0.00" alone is equivalent to "0.00;-0.00".
75 * The grouping separator is commonly used for thousands, but in some
76 * countries for ten-thousands. The interval is a constant number of
77 * digits between the grouping characters, such as 100,000,000 or 1,0000,0000.
78 * If you supply a pattern with multiple grouping characters, the interval
79 * between the last one and the end of the integer is the one that is
80 * used. So "#,##,###,####" == "######,####" == "##,####,####".
82 * This class only handles localized digits where the 10 digits are
83 * contiguous in Unicode, from 0 to 9. Other digits sets (such as
84 * superscripts) would need a different subclass.
86 class U_I18N_API DecimalFormatSymbols : public UObject {
89 * Constants for specifying a number format symbol.
92 enum ENumberFormatSymbol {
93 /** The decimal separator */
94 kDecimalSeparatorSymbol,
95 /** The grouping separator */
96 kGroupingSeparatorSymbol,
97 /** The pattern separator */
98 kPatternSeparatorSymbol,
99 /** The percent sign */
103 /** Character representing a digit in the pattern */
105 /** The minus sign */
109 /** The currency symbol */
111 /** The international currency symbol */
113 /** The monetary separator */
114 kMonetarySeparatorSymbol,
115 /** The exponential symbol */
117 /** Per mill symbol - replaces kPermillSymbol */
119 /** Escape padding character */
121 /** Infinity symbol */
125 /** Significant digit symbol
127 kSignificantDigitSymbol,
128 /** The monetary grouping separator
131 kMonetaryGroupingSeparatorSymbol,
168 /** Multiplication sign.
171 kExponentMultiplicationSymbol,
172 /** count symbol constants */
173 kFormatSymbolCount = kNineDigitSymbol + 2
177 * Create a DecimalFormatSymbols object for the given locale.
179 * @param locale The locale to get symbols for.
180 * @param status Input/output parameter, set to success or
181 * failure code upon return.
184 DecimalFormatSymbols(const Locale& locale, UErrorCode& status);
187 * Create a DecimalFormatSymbols object for the default locale.
188 * This constructor will not fail. If the resource file data is
189 * not available, it will use hard-coded last-resort data and
190 * set status to U_USING_FALLBACK_ERROR.
192 * @param status Input/output parameter, set to success or
193 * failure code upon return.
196 DecimalFormatSymbols(UErrorCode& status);
199 * Creates a DecimalFormatSymbols object with last-resort data.
200 * Intended for callers who cache the symbols data and
201 * set all symbols on the resulting object.
203 * The last-resort symbols are similar to those for the root data,
204 * except that the grouping separators are empty,
205 * the NaN symbol is U+FFFD rather than "NaN",
206 * and the CurrencySpacing patterns are empty.
208 * @param status Input/output parameter, set to success or
209 * failure code upon return.
210 * @return last-resort symbols
213 static DecimalFormatSymbols* createWithLastResortData(UErrorCode& status);
219 DecimalFormatSymbols(const DecimalFormatSymbols&);
222 * Assignment operator.
225 DecimalFormatSymbols& operator=(const DecimalFormatSymbols&);
231 virtual ~DecimalFormatSymbols();
234 * Return true if another object is semantically equal to this one.
236 * @param other the object to be compared with.
237 * @return true if another object is semantically equal to this one.
240 UBool operator==(const DecimalFormatSymbols& other) const;
243 * Return true if another object is semantically unequal to this one.
245 * @param other the object to be compared with.
246 * @return true if another object is semantically unequal to this one.
249 UBool operator!=(const DecimalFormatSymbols& other) const { return !operator==(other); }
252 * Get one of the format symbols by its enum constant.
253 * Each symbol is stored as a string so that graphemes
254 * (characters with modifier letters) can be used.
256 * @param symbol Constant to indicate a number format symbol.
257 * @return the format symbols by the param 'symbol'
260 inline UnicodeString getSymbol(ENumberFormatSymbol symbol) const;
263 * Set one of the format symbols by its enum constant.
264 * Each symbol is stored as a string so that graphemes
265 * (characters with modifier letters) can be used.
267 * @param symbol Constant to indicate a number format symbol.
268 * @param value value of the format symbol
269 * @param propogateDigits If false, setting the zero digit will not automatically set 1-9.
270 * The default behavior is to automatically set 1-9 if zero is being set and the value
271 * it is being set to corresponds to a known Unicode zero digit.
274 void setSymbol(ENumberFormatSymbol symbol, const UnicodeString &value, const UBool propogateDigits);
277 * Returns the locale for which this object was constructed.
280 inline Locale getLocale() const;
283 * Returns the locale for this object. Two flavors are available:
284 * valid and actual locale.
287 Locale getLocale(ULocDataLocaleType type, UErrorCode& status) const;
290 * Get pattern string for 'CurrencySpacing' that can be applied to
292 * This API gets the CurrencySpacing data from ResourceBundle. The pattern can
293 * be empty if there is no data from current locale and its parent locales.
295 * @param type : UNUM_CURRENCY_MATCH, UNUM_CURRENCY_SURROUNDING_MATCH or UNUM_CURRENCY_INSERT.
296 * @param beforeCurrency : true if the pattern is for before currency symbol.
297 * false if the pattern is for after currency symbol.
298 * @param status: Input/output parameter, set to success or
299 * failure code upon return.
300 * @return pattern string for currencyMatch, surroundingMatch or spaceInsert.
301 * Return empty string if there is no data for this locale and its parent
305 const UnicodeString& getPatternForCurrencySpacing(UCurrencySpacing type,
306 UBool beforeCurrency,
307 UErrorCode& status) const;
309 * Set pattern string for 'CurrencySpacing' that can be applied to
312 * @param type : UNUM_CURRENCY_MATCH, UNUM_CURRENCY_SURROUNDING_MATCH or UNUM_CURRENCY_INSERT.
313 * @param beforeCurrency : true if the pattern is for before currency symbol.
314 * false if the pattern is for after currency symbol.
315 * @param pattern : pattern string to override current setting.
318 void setPatternForCurrencySpacing(UCurrencySpacing type,
319 UBool beforeCurrency,
320 const UnicodeString& pattern);
323 * ICU "poor man's RTTI", returns a UClassID for the actual class.
327 virtual UClassID getDynamicClassID() const;
330 * ICU "poor man's RTTI", returns a UClassID for this class.
334 static UClassID U_EXPORT2 getStaticClassID();
337 DecimalFormatSymbols();
340 * Initializes the symbols from the LocaleElements resource bundle.
341 * Note: The organization of LocaleElements badly needs to be
344 * @param locale The locale to get symbols for.
345 * @param success Input/output parameter, set to success or
346 * failure code upon return.
347 * @param useLastResortData determine if use last resort data
349 void initialize(const Locale& locale, UErrorCode& success, UBool useLastResortData = FALSE);
352 * Initialize the symbols with default values.
356 void setCurrencyForSymbols();
360 #ifndef U_HIDE_INTERNAL_API
362 * @internal For ICU use only
364 inline UBool isCustomCurrencySymbol() const {
365 return fIsCustomCurrencySymbol;
369 * @internal For ICU use only
371 inline UBool isCustomIntlCurrencySymbol() const {
372 return fIsCustomIntlCurrencySymbol;
374 #endif /* U_HIDE_INTERNAL_API */
377 * _Internal_ function - more efficient version of getSymbol,
378 * returning a const reference to one of the symbol strings.
379 * The returned reference becomes invalid when the symbol is changed
380 * or when the DecimalFormatSymbols are destroyed.
381 * ### TODO markus 2002oct11: Consider proposing getConstSymbol() to be really public.
382 * Note: moved #ifndef U_HIDE_INTERNAL_API after this, since this is needed for inline in DecimalFormat
384 * @param symbol Constant to indicate a number format symbol.
385 * @return the format symbol by the param 'symbol'
388 inline const UnicodeString &getConstSymbol(ENumberFormatSymbol symbol) const;
390 #ifndef U_HIDE_INTERNAL_API
392 * Returns that pattern stored in currecy info. Internal API for use by NumberFormat API.
395 inline const UChar* getCurrencyPattern(void) const;
396 #endif /* U_HIDE_INTERNAL_API */
400 * Private symbol strings.
401 * They are either loaded from a resource bundle or otherwise owned.
402 * setSymbol() clones the symbol string.
403 * Readonly aliases can only come from a resource bundle, so that we can always
404 * use fastCopyFrom() with them.
406 * If DecimalFormatSymbols becomes subclassable and the status of fSymbols changes
407 * from private to protected,
408 * or when fSymbols can be set any other way that allows them to be readonly aliases
409 * to non-resource bundle strings,
410 * then regular UnicodeString copies must be used instead of fastCopyFrom().
414 UnicodeString fSymbols[kFormatSymbolCount];
417 * Non-symbol variable for getConstSymbol(). Always empty.
420 UnicodeString fNoSymbol;
424 char actualLocale[ULOC_FULLNAME_CAPACITY];
425 char validLocale[ULOC_FULLNAME_CAPACITY];
426 const UChar* currPattern;
428 UnicodeString currencySpcBeforeSym[UNUM_CURRENCY_SPACING_COUNT];
429 UnicodeString currencySpcAfterSym[UNUM_CURRENCY_SPACING_COUNT];
430 UBool fIsCustomCurrencySymbol;
431 UBool fIsCustomIntlCurrencySymbol;
434 // -------------------------------------
437 DecimalFormatSymbols::getSymbol(ENumberFormatSymbol symbol) const {
438 const UnicodeString *strPtr;
439 if(symbol < kFormatSymbolCount) {
440 strPtr = &fSymbols[symbol];
447 // See comments above for this function. Not hidden with #ifndef U_HIDE_INTERNAL_API
448 inline const UnicodeString &
449 DecimalFormatSymbols::getConstSymbol(ENumberFormatSymbol symbol) const {
450 const UnicodeString *strPtr;
451 if(symbol < kFormatSymbolCount) {
452 strPtr = &fSymbols[symbol];
459 // -------------------------------------
462 DecimalFormatSymbols::setSymbol(ENumberFormatSymbol symbol, const UnicodeString &value, const UBool propogateDigits = TRUE) {
463 if (symbol == kCurrencySymbol) {
464 fIsCustomCurrencySymbol = TRUE;
466 else if (symbol == kIntlCurrencySymbol) {
467 fIsCustomIntlCurrencySymbol = TRUE;
469 if(symbol<kFormatSymbolCount) {
470 fSymbols[symbol]=value;
473 // If the zero digit is being set to a known zero digit according to Unicode,
474 // then we automatically set the corresponding 1-9 digits
475 if ( propogateDigits && symbol == kZeroDigitSymbol && value.countChar32() == 1 ) {
476 UChar32 sym = value.char32At(0);
477 if ( u_charDigitValue(sym) == 0 ) {
478 for ( int8_t i = 1 ; i<= 9 ; i++ ) {
480 fSymbols[(int)kOneDigitSymbol+i-1] = UnicodeString(sym);
486 // -------------------------------------
489 DecimalFormatSymbols::getLocale() const {
493 #ifndef U_HIDE_INTERNAL_API
495 DecimalFormatSymbols::getCurrencyPattern() const {
498 #endif /* U_HIDE_INTERNAL_API */
502 #endif /* #if !UCONFIG_NO_FORMATTING */