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10/28/2024 06:50:42 AM
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alphaindex.h
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appendable.h
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basictz.h
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brkiter.h
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bytestream.h
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bytestrie.h
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bytestriebuilder.h
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calendar.h
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caniter.h
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casemap.h
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char16ptr.h
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chariter.h
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choicfmt.h
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coleitr.h
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coll.h
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compactdecimalformat.h
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curramt.h
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currpinf.h
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currunit.h
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datefmt.h
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dbbi.h
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dcfmtsym.h
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decimfmt.h
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docmain.h
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dtfmtsym.h
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dtintrv.h
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dtitvfmt.h
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dtitvinf.h
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dtptngen.h
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dtrule.h
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edits.h
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enumset.h
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errorcode.h
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fieldpos.h
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filteredbrk.h
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fmtable.h
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format.h
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fpositer.h
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gender.h
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gregocal.h
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icudataver.h
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icuplug.h
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idna.h
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listformatter.h
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localpointer.h
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locdspnm.h
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locid.h
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measfmt.h
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measunit.h
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measure.h
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messagepattern.h
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msgfmt.h
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normalizer2.h
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normlzr.h
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nounit.h
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numberformatter.h
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numfmt.h
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numsys.h
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parseerr.h
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parsepos.h
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platform.h
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plurfmt.h
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plurrule.h
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ptypes.h
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putil.h
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rbbi.h
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rbnf.h
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rbtz.h
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regex.h
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region.h
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reldatefmt.h
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rep.h
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resbund.h
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schriter.h
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scientificnumberformatter.h
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search.h
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selfmt.h
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simpleformatter.h
11.43 KB
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simpletz.h
45.24 KB
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smpdtfmt.h
70.09 KB
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sortkey.h
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std_string.h
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strenum.h
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stringoptions.h
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stringpiece.h
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stringtriebuilder.h
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stsearch.h
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symtable.h
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tblcoll.h
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timezone.h
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tmunit.h
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tmutamt.h
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tmutfmt.h
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translit.h
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tzfmt.h
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tznames.h
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tzrule.h
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tztrans.h
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ubidi.h
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ubiditransform.h
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ubrk.h
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ucal.h
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ucasemap.h
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ucat.h
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uchar.h
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ucharstrie.h
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ucharstriebuilder.h
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uchriter.h
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uclean.h
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ucnv.h
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ucnv_cb.h
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ucnv_err.h
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ucnvsel.h
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ucol.h
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ucoleitr.h
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uconfig.h
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ucsdet.h
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ucurr.h
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udat.h
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udata.h
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udateintervalformat.h
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udatpg.h
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udisplaycontext.h
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uenum.h
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ufieldpositer.h
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uformattable.h
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ugender.h
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uidna.h
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uiter.h
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uldnames.h
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ulistformatter.h
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uloc.h
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ulocdata.h
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umachine.h
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umisc.h
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umsg.h
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unifilt.h
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unifunct.h
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unimatch.h
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unirepl.h
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uniset.h
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unistr.h
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unorm.h
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unorm2.h
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unum.h
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unumsys.h
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uobject.h
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upluralrules.h
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uregex.h
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uregion.h
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ureldatefmt.h
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urename.h
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urep.h
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ures.h
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uscript.h
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usearch.h
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uset.h
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usetiter.h
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ushape.h
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uspoof.h
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usprep.h
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ustdio.h
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ustream.h
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ustring.h
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ustringtrie.h
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utext.h
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utf.h
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utf16.h
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utf32.h
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utf8.h
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utf_old.h
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utmscale.h
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utrace.h
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utrans.h
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utypes.h
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uvernum.h
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uversion.h
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vtzone.h
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Editing: numfmt.h
Close
// © 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 NUMFMT.H * * Modification History: * * Date Name Description * 02/19/97 aliu Converted from java. * 03/18/97 clhuang Updated per C++ implementation. * 04/17/97 aliu Changed DigitCount to int per code review. * 07/20/98 stephen JDK 1.2 sync up. Added scientific support. * Changed naming conventions to match C++ guidelines * Derecated Java style constants (eg, INTEGER_FIELD) ******************************************************************************** */ #ifndef NUMFMT_H #define NUMFMT_H #include "unicode/utypes.h" /** * \file * \brief C++ API: Abstract base class for all number formats. */ #if !UCONFIG_NO_FORMATTING #include "unicode/unistr.h" #include "unicode/format.h" #include "unicode/unum.h" // UNumberFormatStyle #include "unicode/locid.h" #include "unicode/stringpiece.h" #include "unicode/curramt.h" #include "unicode/udisplaycontext.h" class NumberFormatTest; U_NAMESPACE_BEGIN class SharedNumberFormat; #if !UCONFIG_NO_SERVICE class NumberFormatFactory; class StringEnumeration; #endif /** * * Abstract base class for all number formats. Provides interface for * formatting and parsing a number. Also provides methods for * determining which locales have number formats, and what their names * are. * * <p><strong>NOTE:</strong> Starting in ICU 60, there is a new set of APIs for localized number * formatting that are designed to be an improvement over DecimalFormat. New users are discouraged * from using DecimalFormat. For more information, see numberformatter.h. * * \headerfile unicode/numfmt.h "unicode/numfmt.h" * <P> * NumberFormat helps you to format and parse numbers for any locale. * Your code can be completely independent of the locale conventions * for decimal points, thousands-separators, or even the particular * decimal digits used, or whether the number format is even decimal. * <P> * To format a number for the current Locale, use one of the static * factory methods: * \code * #include <iostream> * #include "unicode/numfmt.h" * #include "unicode/unistr.h" * #include "unicode/ustream.h" * using namespace std; * * int main() { * double myNumber = 7.0; * UnicodeString myString; * UErrorCode success = U_ZERO_ERROR; * NumberFormat* nf = NumberFormat::createInstance(success); * nf->format(myNumber, myString); * cout << " Example 1: " << myString << endl; * } * \endcode * Note that there are additional factory methods within subclasses of * NumberFormat. * <P> * If you are formatting multiple numbers, it is more efficient to get * the format and use it multiple times so that the system doesn't * have to fetch the information about the local language and country * conventions multiple times. * \code * UnicodeString myString; * UErrorCode success = U_ZERO_ERROR; * NumberFormat *nf = NumberFormat::createInstance( success ); * for (int32_t number: {123, 3333, -1234567}) { * nf->format(number, myString); * myString += "; "; * } * cout << " Example 2: " << myString << endl; * \endcode * To format a number for a different Locale, specify it in the * call to \c createInstance(). * \code * nf = NumberFormat::createInstance(Locale::getFrench(), success); * \endcode * You can use a \c NumberFormat to parse also. * \code * UErrorCode success; * Formattable result(-999); // initialized with error code * nf->parse(myString, result, success); * \endcode * Use \c createInstance() to get the normal number format for a \c Locale. * There are other static factory methods available. Use \c createCurrencyInstance() * to get the currency number format for that country. Use \c createPercentInstance() * to get a format for displaying percentages. With this format, a * fraction from 0.53 is displayed as 53%. * <P> * The type of number formatting can be specified by passing a 'style' parameter to \c createInstance(). * For example, use\n * \c createInstance(locale, UNUM_DECIMAL, errorCode) to get the normal number format,\n * \c createInstance(locale, UNUM_PERCENT, errorCode) to get a format for displaying percentage,\n * \c createInstance(locale, UNUM_SCIENTIFIC, errorCode) to get a format for displaying scientific number,\n * \c createInstance(locale, UNUM_CURRENCY, errorCode) to get the currency number format, * in which the currency is represented by its symbol, for example, "$3.00".\n * \c createInstance(locale, UNUM_CURRENCY_ISO, errorCode) to get the currency number format, * in which the currency is represented by its ISO code, for example "USD3.00".\n * \c createInstance(locale, UNUM_CURRENCY_PLURAL, errorCode) to get the currency number format, * in which the currency is represented by its full name in plural format, * for example, "3.00 US dollars" or "1.00 US dollar". * <P> * You can also control the display of numbers with such methods as * \c getMinimumFractionDigits(). If you want even more control over the * format or parsing, or want to give your users more control, you can * try dynamic_casting the \c NumberFormat you get from the factory methods to a * \c DecimalFormat. This will work for the vast majority of * countries; just remember to test for NULL in case you * encounter an unusual one. * <P> * You can also use forms of the parse and format methods with * \c ParsePosition and \c FieldPosition to allow you to: * <ul type=round> * <li>(a) progressively parse through pieces of a string. * <li>(b) align the decimal point and other areas. * </ul> * For example, you can align numbers in two ways. * <P> * If you are using a monospaced font with spacing for alignment, you * can pass the \c FieldPosition in your format call, with field = * \c UNUM_INTEGER_FIELD. On output, \c getEndIndex will be set to the offset * between the last character of the integer and the decimal. Add * (desiredSpaceCount - getEndIndex) spaces at the front of the * string. * <P> * If you are using proportional fonts, instead of padding with * spaces, measure the width of the string in pixels from the start to * getEndIndex. Then move the pen by (desiredPixelWidth - * widthToAlignmentPoint) before drawing the text. It also works * where there is no decimal, but possibly additional characters at * the end, e.g. with parentheses in negative numbers: "(12)" for -12. * <p> * <em>User subclasses are not supported.</em> While clients may write * subclasses, such code will not necessarily work and will not be * guaranteed to work stably from release to release. * * @stable ICU 2.0 */ class U_I18N_API NumberFormat : public Format { public: /** * Rounding mode. * * <p> * For more detail on rounding modes, see: * http://userguide.icu-project.org/formatparse/numbers/rounding-modes * * @stable ICU 2.4 */ enum ERoundingMode { kRoundCeiling, /**< Round towards positive infinity */ kRoundFloor, /**< Round towards negative infinity */ kRoundDown, /**< Round towards zero */ kRoundUp, /**< Round away from zero */ kRoundHalfEven, /**< Round towards the nearest integer, or towards the nearest even integer if equidistant */ kRoundHalfDown, /**< Round towards the nearest integer, or towards zero if equidistant */ kRoundHalfUp, /**< Round towards the nearest integer, or away from zero if equidistant */ /** * Return U_FORMAT_INEXACT_ERROR if number does not format exactly. * @stable ICU 4.8 */ kRoundUnnecessary }; /** * Alignment Field constants used to construct a FieldPosition object. * Signifies that the position of the integer part or fraction part of * a formatted number should be returned. * * Note: as of ICU 4.4, the values in this enum have been extended to * support identification of all number format fields, not just those * pertaining to alignment. * * These constants are provided for backwards compatibility only. * Please use the C style constants defined in the header file unum.h. * * @see FieldPosition * @stable ICU 2.0 */ enum EAlignmentFields { /** @stable ICU 2.0 */ kIntegerField = UNUM_INTEGER_FIELD, /** @stable ICU 2.0 */ kFractionField = UNUM_FRACTION_FIELD, /** @stable ICU 2.0 */ kDecimalSeparatorField = UNUM_DECIMAL_SEPARATOR_FIELD, /** @stable ICU 2.0 */ kExponentSymbolField = UNUM_EXPONENT_SYMBOL_FIELD, /** @stable ICU 2.0 */ kExponentSignField = UNUM_EXPONENT_SIGN_FIELD, /** @stable ICU 2.0 */ kExponentField = UNUM_EXPONENT_FIELD, /** @stable ICU 2.0 */ kGroupingSeparatorField = UNUM_GROUPING_SEPARATOR_FIELD, /** @stable ICU 2.0 */ kCurrencyField = UNUM_CURRENCY_FIELD, /** @stable ICU 2.0 */ kPercentField = UNUM_PERCENT_FIELD, /** @stable ICU 2.0 */ kPermillField = UNUM_PERMILL_FIELD, /** @stable ICU 2.0 */ kSignField = UNUM_SIGN_FIELD, /** * These constants are provided for backwards compatibility only. * Please use the constants defined in the header file unum.h. */ /** @stable ICU 2.0 */ INTEGER_FIELD = UNUM_INTEGER_FIELD, /** @stable ICU 2.0 */ FRACTION_FIELD = UNUM_FRACTION_FIELD }; /** * Destructor. * @stable ICU 2.0 */ virtual ~NumberFormat(); /** * Return true if the given Format objects are semantically equal. * Objects of different subclasses are considered unequal. * @return true if the given Format objects are semantically equal. * @stable ICU 2.0 */ virtual UBool operator==(const Format& other) const; using Format::format; /** * Format an object to produce a string. This method handles * Formattable objects with numeric types. If the Formattable * object type is not a numeric type, then it returns a failing * UErrorCode. * * @param obj The object to format. * @param appendTo Output parameter to receive result. * Result is appended to existing contents. * @param pos On input: an alignment field, if desired. * On output: the offsets of the alignment field. * @param status Output param filled with success/failure status. * @return Reference to 'appendTo' parameter. * @stable ICU 2.0 */ virtual UnicodeString& format(const Formattable& obj, UnicodeString& appendTo, FieldPosition& pos, UErrorCode& status) const; /** * Format an object to produce a string. This method handles * Formattable objects with numeric types. If the Formattable * object type is not a numeric type, then it returns a failing * UErrorCode. * * @param obj The object to format. * @param appendTo Output parameter to receive result. * Result is appended to existing contents. * @param posIter On return, can be used to iterate over positions * of fields generated by this format call. Can be * NULL. * @param status Output param filled with success/failure status. * @return Reference to 'appendTo' parameter. * @stable ICU 4.4 */ virtual UnicodeString& format(const Formattable& obj, UnicodeString& appendTo, FieldPositionIterator* posIter, UErrorCode& status) const; /** * Parse a string to produce an object. This methods handles * parsing of numeric strings into Formattable objects with numeric * types. * <P> * Before calling, set parse_pos.index to the offset you want to * start parsing at in the source. After calling, parse_pos.index * indicates the position after the successfully parsed text. If * an error occurs, parse_pos.index is unchanged. * <P> * When parsing, leading whitespace is discarded (with successful * parse), while trailing whitespace is left as is. * <P> * See Format::parseObject() for more. * * @param source The string to be parsed into an object. * @param result Formattable to be set to the parse result. * If parse fails, return contents are undefined. * @param parse_pos The position to start parsing at. Upon return * this param is set to the position after the * last character successfully parsed. If the * source is not parsed successfully, this param * will remain unchanged. * @return A newly created Formattable* object, or NULL * on failure. The caller owns this and should * delete it when done. * @stable ICU 2.0 */ virtual void parseObject(const UnicodeString& source, Formattable& result, ParsePosition& parse_pos) const; /** * Format a double number. These methods call the NumberFormat * pure virtual format() methods with the default FieldPosition. * * @param number The value to be formatted. * @param appendTo Output parameter to receive result. * Result is appended to existing contents. * @return Reference to 'appendTo' parameter. * @stable ICU 2.0 */ UnicodeString& format( double number, UnicodeString& appendTo) const; /** * Format a long number. These methods call the NumberFormat * pure virtual format() methods with the default FieldPosition. * * @param number The value to be formatted. * @param appendTo Output parameter to receive result. * Result is appended to existing contents. * @return Reference to 'appendTo' parameter. * @stable ICU 2.0 */ UnicodeString& format( int32_t number, UnicodeString& appendTo) const; /** * Format an int64 number. These methods call the NumberFormat * pure virtual format() methods with the default FieldPosition. * * @param number The value to be formatted. * @param appendTo Output parameter to receive result. * Result is appended to existing contents. * @return Reference to 'appendTo' parameter. * @stable ICU 2.8 */ UnicodeString& format( int64_t number, UnicodeString& appendTo) const; /** * Format a double number. Concrete subclasses must implement * these pure virtual methods. * * @param number The value to be formatted. * @param appendTo Output parameter to receive result. * Result is appended to existing contents. * @param pos On input: an alignment field, if desired. * On output: the offsets of the alignment field. * @return Reference to 'appendTo' parameter. * @stable ICU 2.0 */ virtual UnicodeString& format(double number, UnicodeString& appendTo, FieldPosition& pos) const = 0; /** * Format a double number. By default, the parent function simply * calls the base class and does not return an error status. * Therefore, the status may be ignored in some subclasses. * * @param number The value to be formatted. * @param appendTo Output parameter to receive result. * Result is appended to existing contents. * @param pos On input: an alignment field, if desired. * On output: the offsets of the alignment field. * @param status error status * @return Reference to 'appendTo' parameter. * @internal */ virtual UnicodeString& format(double number, UnicodeString& appendTo, FieldPosition& pos, UErrorCode &status) const; /** * Format a double number. Subclasses must implement * this method. * * @param number The value to be formatted. * @param appendTo Output parameter to receive result. * Result is appended to existing contents. * @param posIter On return, can be used to iterate over positions * of fields generated by this format call. * Can be NULL. * @param status Output param filled with success/failure status. * @return Reference to 'appendTo' parameter. * @stable ICU 4.4 */ virtual UnicodeString& format(double number, UnicodeString& appendTo, FieldPositionIterator* posIter, UErrorCode& status) const; /** * Format a long number. Concrete subclasses must implement * these pure virtual methods. * * @param number The value to be formatted. * @param appendTo Output parameter to receive result. * Result is appended to existing contents. * @param pos On input: an alignment field, if desired. * On output: the offsets of the alignment field. * @return Reference to 'appendTo' parameter. * @stable ICU 2.0 */ virtual UnicodeString& format(int32_t number, UnicodeString& appendTo, FieldPosition& pos) const = 0; /** * Format a long number. Concrete subclasses may override * this function to provide status return. * * @param number The value to be formatted. * @param appendTo Output parameter to receive result. * Result is appended to existing contents. * @param pos On input: an alignment field, if desired. * On output: the offsets of the alignment field. * @param status the output status. * @return Reference to 'appendTo' parameter. * @internal */ virtual UnicodeString& format(int32_t number, UnicodeString& appendTo, FieldPosition& pos, UErrorCode &status) const; /** * Format an int32 number. Subclasses must implement * this method. * * @param number The value to be formatted. * @param appendTo Output parameter to receive result. * Result is appended to existing contents. * @param posIter On return, can be used to iterate over positions * of fields generated by this format call. * Can be NULL. * @param status Output param filled with success/failure status. * @return Reference to 'appendTo' parameter. * @stable ICU 4.4 */ virtual UnicodeString& format(int32_t number, UnicodeString& appendTo, FieldPositionIterator* posIter, UErrorCode& status) const; /** * Format an int64 number. (Not abstract to retain compatibility * with earlier releases, however subclasses should override this * method as it just delegates to format(int32_t number...); * * @param number The value to be formatted. * @param appendTo Output parameter to receive result. * Result is appended to existing contents. * @param pos On input: an alignment field, if desired. * On output: the offsets of the alignment field. * @return Reference to 'appendTo' parameter. * @stable ICU 2.8 */ virtual UnicodeString& format(int64_t number, UnicodeString& appendTo, FieldPosition& pos) const; /** * Format an int64 number. (Not abstract to retain compatibility * with earlier releases, however subclasses should override this * method as it just delegates to format(int32_t number...); * * @param number The value to be formatted. * @param appendTo Output parameter to receive result. * Result is appended to existing contents. * @param pos On input: an alignment field, if desired. * On output: the offsets of the alignment field. * @param status Output param filled with success/failure status. * @return Reference to 'appendTo' parameter. * @internal */ virtual UnicodeString& format(int64_t number, UnicodeString& appendTo, FieldPosition& pos, UErrorCode& status) const; /** * Format an int64 number. Subclasses must implement * this method. * * @param number The value to be formatted. * @param appendTo Output parameter to receive result. * Result is appended to existing contents. * @param posIter On return, can be used to iterate over positions * of fields generated by this format call. * Can be NULL. * @param status Output param filled with success/failure status. * @return Reference to 'appendTo' parameter. * @stable ICU 4.4 */ virtual UnicodeString& format(int64_t number, UnicodeString& appendTo, FieldPositionIterator* posIter, UErrorCode& status) const; /** * Format a decimal number. Subclasses must implement * this method. The syntax of the unformatted number is a "numeric string" * as defined in the Decimal Arithmetic Specification, available at * http://speleotrove.com/decimal * * @param number The unformatted number, as a string, to be formatted. * @param appendTo Output parameter to receive result. * Result is appended to existing contents. * @param posIter On return, can be used to iterate over positions * of fields generated by this format call. * Can be NULL. * @param status Output param filled with success/failure status. * @return Reference to 'appendTo' parameter. * @stable ICU 4.4 */ virtual UnicodeString& format(StringPiece number, UnicodeString& appendTo, FieldPositionIterator* posIter, UErrorCode& status) const; public: /** * Format a decimal number. * The number is a DigitList wrapper onto a floating point decimal number. * The default implementation in NumberFormat converts the decimal number * to a double and formats that. Subclasses of NumberFormat that want * to specifically handle big decimal numbers must override this method. * class DecimalFormat does so. * * @param number The number, a DigitList format Decimal Floating Point. * @param appendTo Output parameter to receive result. * Result is appended to existing contents. * @param posIter On return, can be used to iterate over positions * of fields generated by this format call. * @param status Output param filled with success/failure status. * @return Reference to 'appendTo' parameter. * @internal */ virtual UnicodeString& format(const DigitList &number, UnicodeString& appendTo, FieldPositionIterator* posIter, UErrorCode& status) const; /** * Format a decimal number. * The number is a DigitList wrapper onto a floating point decimal number. * The default implementation in NumberFormat converts the decimal number * to a double and formats that. Subclasses of NumberFormat that want * to specifically handle big decimal numbers must override this method. * class DecimalFormat does so. * * @param number The number, a DigitList format Decimal Floating Point. * @param appendTo Output parameter to receive result. * Result is appended to existing contents. * @param pos On input: an alignment field, if desired. * On output: the offsets of the alignment field. * @param status Output param filled with success/failure status. * @return Reference to 'appendTo' parameter. * @internal */ virtual UnicodeString& format(const DigitList &number, UnicodeString& appendTo, FieldPosition& pos, UErrorCode& status) const; public: /** * Return a long if possible (e.g. within range LONG_MAX, * LONG_MAX], and with no decimals), otherwise a double. If * IntegerOnly is set, will stop at a decimal point (or equivalent; * e.g. for rational numbers "1 2/3", will stop after the 1). * <P> * If no object can be parsed, index is unchanged, and NULL is * returned. * <P> * This is a pure virtual which concrete subclasses must implement. * * @param text The text to be parsed. * @param result Formattable to be set to the parse result. * If parse fails, return contents are undefined. * @param parsePosition The position to start parsing at on input. * On output, moved to after the last successfully * parse character. On parse failure, does not change. * @stable ICU 2.0 */ virtual void parse(const UnicodeString& text, Formattable& result, ParsePosition& parsePosition) const = 0; /** * Parse a string as a numeric value, and return a Formattable * numeric object. This method parses integers only if IntegerOnly * is set. * * @param text The text to be parsed. * @param result Formattable to be set to the parse result. * If parse fails, return contents are undefined. * @param status Output parameter set to a failure error code * when a failure occurs. * @see NumberFormat::isParseIntegerOnly * @stable ICU 2.0 */ virtual void parse(const UnicodeString& text, Formattable& result, UErrorCode& status) const; /** * Parses text from the given string as a currency amount. Unlike * the parse() method, this method will attempt to parse a generic * currency name, searching for a match of this object's locale's * currency display names, or for a 3-letter ISO currency code. * This method will fail if this format is not a currency format, * that is, if it does not contain the currency pattern symbol * (U+00A4) in its prefix or suffix. * * @param text the string to parse * @param pos input-output position; on input, the position within text * to match; must have 0 <= pos.getIndex() < text.length(); * on output, the position after the last matched character. * If the parse fails, the position in unchanged upon output. * @return if parse succeeds, a pointer to a newly-created CurrencyAmount * object (owned by the caller) containing information about * the parsed currency; if parse fails, this is NULL. * @stable ICU 49 */ virtual CurrencyAmount* parseCurrency(const UnicodeString& text, ParsePosition& pos) const; /** * Return true if this format will parse numbers as integers * only. For example in the English locale, with ParseIntegerOnly * true, the string "1234." would be parsed as the integer value * 1234 and parsing would stop at the "." character. Of course, * the exact format accepted by the parse operation is locale * dependant and determined by sub-classes of NumberFormat. * @return true if this format will parse numbers as integers * only. * @stable ICU 2.0 */ UBool isParseIntegerOnly(void) const; /** * Sets whether or not numbers should be parsed as integers only. * @param value set True, this format will parse numbers as integers * only. * @see isParseIntegerOnly * @stable ICU 2.0 */ virtual void setParseIntegerOnly(UBool value); /** * Sets whether lenient parsing should be enabled (it is off by default). * * @param enable \c TRUE if lenient parsing should be used, * \c FALSE otherwise. * @stable ICU 4.8 */ virtual void setLenient(UBool enable); /** * Returns whether lenient parsing is enabled (it is off by default). * * @return \c TRUE if lenient parsing is enabled, * \c FALSE otherwise. * @see #setLenient * @stable ICU 4.8 */ virtual UBool isLenient(void) const; /** * Create a default style NumberFormat for the current default locale. * The default formatting style is locale dependent. * @stable ICU 2.0 */ static NumberFormat* U_EXPORT2 createInstance(UErrorCode&); /** * Create a default style NumberFormat for the specified locale. * The default formatting style is locale dependent. * @param inLocale the given locale. * @stable ICU 2.0 */ static NumberFormat* U_EXPORT2 createInstance(const Locale& inLocale, UErrorCode&); /** * Create a specific style NumberFormat for the specified locale. * @param desiredLocale the given locale. * @param style the given style. * @param errorCode Output param filled with success/failure status. * @return A new NumberFormat instance. * @stable ICU 4.8 */ static NumberFormat* U_EXPORT2 createInstance(const Locale& desiredLocale, UNumberFormatStyle style, UErrorCode& errorCode); #ifndef U_HIDE_INTERNAL_API /** * ICU use only. * Creates NumberFormat instance without using the cache. * @internal */ static NumberFormat* internalCreateInstance( const Locale& desiredLocale, UNumberFormatStyle style, UErrorCode& errorCode); /** * ICU use only. * Returns handle to the shared, cached NumberFormat instance for given * locale. On success, caller must call removeRef() on returned value * once it is done with the shared instance. * @internal */ static const SharedNumberFormat* U_EXPORT2 createSharedInstance( const Locale& inLocale, UNumberFormatStyle style, UErrorCode& status); #endif /* U_HIDE_INTERNAL_API */ /** * Returns a currency format for the current default locale. * @stable ICU 2.0 */ static NumberFormat* U_EXPORT2 createCurrencyInstance(UErrorCode&); /** * Returns a currency format for the specified locale. * @param inLocale the given locale. * @stable ICU 2.0 */ static NumberFormat* U_EXPORT2 createCurrencyInstance(const Locale& inLocale, UErrorCode&); /** * Returns a percentage format for the current default locale. * @stable ICU 2.0 */ static NumberFormat* U_EXPORT2 createPercentInstance(UErrorCode&); /** * Returns a percentage format for the specified locale. * @param inLocale the given locale. * @stable ICU 2.0 */ static NumberFormat* U_EXPORT2 createPercentInstance(const Locale& inLocale, UErrorCode&); /** * Returns a scientific format for the current default locale. * @stable ICU 2.0 */ static NumberFormat* U_EXPORT2 createScientificInstance(UErrorCode&); /** * Returns a scientific format for the specified locale. * @param inLocale the given locale. * @stable ICU 2.0 */ static NumberFormat* U_EXPORT2 createScientificInstance(const Locale& inLocale, UErrorCode&); /** * Get the set of Locales for which NumberFormats are installed. * @param count Output param to receive the size of the locales * @stable ICU 2.0 */ static const Locale* U_EXPORT2 getAvailableLocales(int32_t& count); #if !UCONFIG_NO_SERVICE /** * Register a new NumberFormatFactory. The factory will be adopted. * Because ICU may choose to cache NumberFormat objects internally, * this must be called at application startup, prior to any calls to * NumberFormat::createInstance to avoid undefined behavior. * @param toAdopt the NumberFormatFactory instance to be adopted * @param status the in/out status code, no special meanings are assigned * @return a registry key that can be used to unregister this factory * @stable ICU 2.6 */ static URegistryKey U_EXPORT2 registerFactory(NumberFormatFactory* toAdopt, UErrorCode& status); /** * Unregister a previously-registered NumberFormatFactory using the key returned from the * register call. Key becomes invalid after a successful call and should not be used again. * The NumberFormatFactory corresponding to the key will be deleted. * Because ICU may choose to cache NumberFormat objects internally, * this should be called during application shutdown, after all calls to * NumberFormat::createInstance to avoid undefined behavior. * @param key the registry key returned by a previous call to registerFactory * @param status the in/out status code, no special meanings are assigned * @return TRUE if the factory for the key was successfully unregistered * @stable ICU 2.6 */ static UBool U_EXPORT2 unregister(URegistryKey key, UErrorCode& status); /** * Return a StringEnumeration over the locales available at the time of the call, * including registered locales. * @return a StringEnumeration over the locales available at the time of the call * @stable ICU 2.6 */ static StringEnumeration* U_EXPORT2 getAvailableLocales(void); #endif /* UCONFIG_NO_SERVICE */ /** * Returns true if grouping is used in this format. For example, * in the English locale, with grouping on, the number 1234567 * might be formatted as "1,234,567". The grouping separator as * well as the size of each group is locale dependent and is * determined by sub-classes of NumberFormat. * @see setGroupingUsed * @stable ICU 2.0 */ UBool isGroupingUsed(void) const; /** * Set whether or not grouping will be used in this format. * @param newValue True, grouping will be used in this format. * @see getGroupingUsed * @stable ICU 2.0 */ virtual void setGroupingUsed(UBool newValue); /** * Returns the maximum number of digits allowed in the integer portion of a * number. * @return the maximum number of digits allowed in the integer portion of a * number. * @see setMaximumIntegerDigits * @stable ICU 2.0 */ int32_t getMaximumIntegerDigits(void) const; /** * Sets the maximum number of digits allowed in the integer portion of a * number. maximumIntegerDigits must be >= minimumIntegerDigits. If the * new value for maximumIntegerDigits is less than the current value * of minimumIntegerDigits, then minimumIntegerDigits will also be set to * the new value. * * @param newValue the new value for the maximum number of digits * allowed in the integer portion of a number. * @see getMaximumIntegerDigits * @stable ICU 2.0 */ virtual void setMaximumIntegerDigits(int32_t newValue); /** * Returns the minimum number of digits allowed in the integer portion of a * number. * @return the minimum number of digits allowed in the integer portion of a * number. * @see setMinimumIntegerDigits * @stable ICU 2.0 */ int32_t getMinimumIntegerDigits(void) const; /** * Sets the minimum number of digits allowed in the integer portion of a * number. minimumIntegerDigits must be <= maximumIntegerDigits. If the * new value for minimumIntegerDigits exceeds the current value * of maximumIntegerDigits, then maximumIntegerDigits will also be set to * the new value. * @param newValue the new value to be set. * @see getMinimumIntegerDigits * @stable ICU 2.0 */ virtual void setMinimumIntegerDigits(int32_t newValue); /** * Returns the maximum number of digits allowed in the fraction portion of a * number. * @return the maximum number of digits allowed in the fraction portion of a * number. * @see setMaximumFractionDigits * @stable ICU 2.0 */ int32_t getMaximumFractionDigits(void) const; /** * Sets the maximum number of digits allowed in the fraction portion of a * number. maximumFractionDigits must be >= minimumFractionDigits. If the * new value for maximumFractionDigits is less than the current value * of minimumFractionDigits, then minimumFractionDigits will also be set to * the new value. * @param newValue the new value to be set. * @see getMaximumFractionDigits * @stable ICU 2.0 */ virtual void setMaximumFractionDigits(int32_t newValue); /** * Returns the minimum number of digits allowed in the fraction portion of a * number. * @return the minimum number of digits allowed in the fraction portion of a * number. * @see setMinimumFractionDigits * @stable ICU 2.0 */ int32_t getMinimumFractionDigits(void) const; /** * Sets the minimum number of digits allowed in the fraction portion of a * number. minimumFractionDigits must be <= maximumFractionDigits. If the * new value for minimumFractionDigits exceeds the current value * of maximumFractionDigits, then maximumIntegerDigits will also be set to * the new value * @param newValue the new value to be set. * @see getMinimumFractionDigits * @stable ICU 2.0 */ virtual void setMinimumFractionDigits(int32_t newValue); /** * Sets the currency used to display currency * amounts. This takes effect immediately, if this format is a * currency format. If this format is not a currency format, then * the currency is used if and when this object becomes a * currency format. * @param theCurrency a 3-letter ISO code indicating new currency * to use. It need not be null-terminated. May be the empty * string or NULL to indicate no currency. * @param ec input-output error code * @stable ICU 3.0 */ virtual void setCurrency(const char16_t* theCurrency, UErrorCode& ec); /** * Gets the currency used to display currency * amounts. This may be an empty string for some subclasses. * @return a 3-letter null-terminated ISO code indicating * the currency in use, or a pointer to the empty string. * @stable ICU 2.6 */ const char16_t* getCurrency() const; /** * Set a particular UDisplayContext value in the formatter, such as * UDISPCTX_CAPITALIZATION_FOR_STANDALONE. * @param value The UDisplayContext value to set. * @param status Input/output status. If at entry this indicates a failure * status, the function will do nothing; otherwise this will be * updated with any new status from the function. * @stable ICU 53 */ virtual void setContext(UDisplayContext value, UErrorCode& status); /** * Get the formatter's UDisplayContext value for the specified UDisplayContextType, * such as UDISPCTX_TYPE_CAPITALIZATION. * @param type The UDisplayContextType whose value to return * @param status Input/output status. If at entry this indicates a failure * status, the function will do nothing; otherwise this will be * updated with any new status from the function. * @return The UDisplayContextValue for the specified type. * @stable ICU 53 */ virtual UDisplayContext getContext(UDisplayContextType type, UErrorCode& status) const; /** * Get the rounding mode. This will always return NumberFormat::ERoundingMode::kRoundUnnecessary * if the subclass does not support rounding. * @return A rounding mode * @draft ICU 60 */ virtual ERoundingMode getRoundingMode(void) const; /** * Set the rounding mode. If a subclass does not support rounding, this will do nothing. * @param roundingMode A rounding mode * @draft ICU 60 */ virtual void setRoundingMode(ERoundingMode roundingMode); public: /** * Return the class ID for this class. This is useful for * comparing to a return value from getDynamicClassID(). Note that, * because NumberFormat is an abstract base class, no fully constructed object * will have the class ID returned by NumberFormat::getStaticClassID(). * @return The class ID for all objects of this class. * @stable ICU 2.0 */ static UClassID U_EXPORT2 getStaticClassID(void); /** * Returns a unique class ID POLYMORPHICALLY. Pure virtual override. * This method is to implement a simple version of RTTI, since not all * C++ compilers support genuine RTTI. Polymorphic operator==() and * clone() methods call this method. * <P> * @return The class ID for this object. All objects of a * given class have the same class ID. Objects of * other classes have different class IDs. * @stable ICU 2.0 */ virtual UClassID getDynamicClassID(void) const = 0; protected: /** * Default constructor for subclass use only. * @stable ICU 2.0 */ NumberFormat(); /** * Copy constructor. * @stable ICU 2.0 */ NumberFormat(const NumberFormat&); /** * Assignment operator. * @stable ICU 2.0 */ NumberFormat& operator=(const NumberFormat&); /** * Returns the currency in effect for this formatter. Subclasses * should override this method as needed. Unlike getCurrency(), * this method should never return "". * @result output parameter for null-terminated result, which must * have a capacity of at least 4 * @internal */ virtual void getEffectiveCurrency(char16_t* result, UErrorCode& ec) const; #ifndef U_HIDE_INTERNAL_API /** * Creates the specified number format style of the desired locale. * If mustBeDecimalFormat is TRUE, then the returned pointer is * either a DecimalFormat or it is NULL. * @internal */ static NumberFormat* makeInstance(const Locale& desiredLocale, UNumberFormatStyle style, UBool mustBeDecimalFormat, UErrorCode& errorCode); #endif /* U_HIDE_INTERNAL_API */ private: static UBool isStyleSupported(UNumberFormatStyle style); /** * Creates the specified decimal format style of the desired locale. * @param desiredLocale the given locale. * @param style the given style. * @param errorCode Output param filled with success/failure status. * @return A new NumberFormat instance. */ static NumberFormat* makeInstance(const Locale& desiredLocale, UNumberFormatStyle style, UErrorCode& errorCode); UBool fGroupingUsed; int32_t fMaxIntegerDigits; int32_t fMinIntegerDigits; int32_t fMaxFractionDigits; int32_t fMinFractionDigits; protected: /** \internal */ static const int32_t gDefaultMaxIntegerDigits; /** \internal */ static const int32_t gDefaultMinIntegerDigits; private: UBool fParseIntegerOnly; UBool fLenient; // TRUE => lenient parse is enabled // ISO currency code char16_t fCurrency[4]; UDisplayContext fCapitalizationContext; friend class ICUNumberFormatFactory; // access to makeInstance friend class ICUNumberFormatService; friend class ::NumberFormatTest; // access to isStyleSupported() }; #if !UCONFIG_NO_SERVICE /** * A NumberFormatFactory is used to register new number formats. The factory * should be able to create any of the predefined formats for each locale it * supports. When registered, the locales it supports extend or override the * locale already supported by ICU. * * @stable ICU 2.6 */ class U_I18N_API NumberFormatFactory : public UObject { public: /** * Destructor * @stable ICU 3.0 */ virtual ~NumberFormatFactory(); /** * Return true if this factory will be visible. Default is true. * If not visible, the locales supported by this factory will not * be listed by getAvailableLocales. * @stable ICU 2.6 */ virtual UBool visible(void) const = 0; /** * Return the locale names directly supported by this factory. The number of names * is returned in count; * @stable ICU 2.6 */ virtual const UnicodeString * getSupportedIDs(int32_t &count, UErrorCode& status) const = 0; /** * Return a number format of the appropriate type. If the locale * is not supported, return null. If the locale is supported, but * the type is not provided by this service, return null. Otherwise * return an appropriate instance of NumberFormat. * @stable ICU 2.6 */ virtual NumberFormat* createFormat(const Locale& loc, UNumberFormatStyle formatType) = 0; }; /** * A NumberFormatFactory that supports a single locale. It can be visible or invisible. * @stable ICU 2.6 */ class U_I18N_API SimpleNumberFormatFactory : public NumberFormatFactory { protected: /** * True if the locale supported by this factory is visible. * @stable ICU 2.6 */ const UBool _visible; /** * The locale supported by this factory, as a UnicodeString. * @stable ICU 2.6 */ UnicodeString _id; public: /** * @stable ICU 2.6 */ SimpleNumberFormatFactory(const Locale& locale, UBool visible = TRUE); /** * @stable ICU 3.0 */ virtual ~SimpleNumberFormatFactory(); /** * @stable ICU 2.6 */ virtual UBool visible(void) const; /** * @stable ICU 2.6 */ virtual const UnicodeString * getSupportedIDs(int32_t &count, UErrorCode& status) const; }; #endif /* #if !UCONFIG_NO_SERVICE */ // ------------------------------------- inline UBool NumberFormat::isParseIntegerOnly() const { return fParseIntegerOnly; } inline UBool NumberFormat::isLenient() const { return fLenient; } U_NAMESPACE_END #endif /* #if !UCONFIG_NO_FORMATTING */ #endif // _NUMFMT //eof