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numfmt.h

00001 /*
00002 * Copyright (C) {1997-2003}, International Business Machines Corporation and others. All Rights Reserved.
00003 ********************************************************************************
00004 *
00005 * File NUMFMT.H
00006 *
00007 * Modification History:
00008 *
00009 *   Date        Name        Description
00010 *   02/19/97    aliu        Converted from java.
00011 *   03/18/97    clhuang     Updated per C++ implementation.
00012 *   04/17/97    aliu        Changed DigitCount to int per code review.
00013 *    07/20/98    stephen        JDK 1.2 sync up. Added scientific support.
00014 *                            Changed naming conventions to match C++ guidelines
00015 *                            Derecated Java style constants (eg, INTEGER_FIELD)
00016 ********************************************************************************
00017 */
00018 
00019 #ifndef NUMFMT_H
00020 #define NUMFMT_H
00021 
00022 
00023 #include "unicode/utypes.h"
00024 
00025 #if !UCONFIG_NO_FORMATTING
00026 
00027 #include "unicode/unistr.h"
00028 #include "unicode/format.h"
00029 #include "unicode/unum.h" // UNumberFormatStyle
00030 #include "unicode/locid.h"
00031 
00032 U_NAMESPACE_BEGIN
00033 
00034 class NumberFormatFactory;
00035 class StringEnumeration;
00036 
00037 typedef const void* URegistryKey;
00038 
00133 class U_I18N_API NumberFormat : public Format {
00134 public:
00135 
00144     enum EAlignmentFields {
00145         kIntegerField,
00146         kFractionField,
00147 
00148 
00154         INTEGER_FIELD        = kIntegerField,
00155         FRACTION_FIELD        = kFractionField
00156     };
00157 
00162     virtual ~NumberFormat();
00163 
00170     virtual UBool operator==(const Format& other) const;
00171 
00187     virtual UnicodeString& format(const Formattable& obj,
00188                                   UnicodeString& appendTo,
00189                                   FieldPosition& pos,
00190                                   UErrorCode& status) const;
00191 
00220     virtual void parseObject(const UnicodeString& source,
00221                              Formattable& result,
00222                              ParsePosition& parse_pos) const;
00223 
00234     UnicodeString& format(  double number,
00235                             UnicodeString& appendTo) const;
00236 
00247     UnicodeString& format(  int32_t number,
00248                             UnicodeString& appendTo) const;
00249 
00260     UnicodeString& format(  int64_t number,
00261                             UnicodeString& appendTo) const;
00262 
00275     virtual UnicodeString& format(double number,
00276                                   UnicodeString& appendTo,
00277                                   FieldPosition& pos) const = 0;
00290     virtual UnicodeString& format(int32_t number,
00291                                   UnicodeString& appendTo,
00292                                   FieldPosition& pos) const = 0;
00293 
00307     virtual UnicodeString& format(int64_t number,
00308                                   UnicodeString& appendTo,
00309                                   FieldPosition& pos) const;
00320     UnicodeString& format(const Formattable& obj,
00321                           UnicodeString& appendTo,
00322                           UErrorCode& status) const;
00323 
00345     virtual void parse(const UnicodeString& text,
00346                        Formattable& result,
00347                        ParsePosition& parsePosition) const = 0;
00348 
00364     virtual void parse( const UnicodeString& text,
00365                         Formattable& result,
00366                         UErrorCode& status) const;
00367 
00379     UBool isParseIntegerOnly(void) const;
00380 
00388     virtual void setParseIntegerOnly(UBool value);
00389 
00398     static NumberFormat* createInstance(UErrorCode&);
00399 
00408     static NumberFormat* createInstance(const Locale& inLocale,
00409                                         UErrorCode&);
00410 
00415     static NumberFormat* createCurrencyInstance(UErrorCode&);
00416 
00422     static NumberFormat* createCurrencyInstance(const Locale& inLocale,
00423                                                 UErrorCode&);
00424 
00429     static NumberFormat* createPercentInstance(UErrorCode&);
00430 
00436     static NumberFormat* createPercentInstance(const Locale& inLocale,
00437                                                UErrorCode&);
00438 
00443     static NumberFormat* createScientificInstance(UErrorCode&);
00444 
00450     static NumberFormat* createScientificInstance(const Locale& inLocale,
00451                                                 UErrorCode&);
00452 
00458     static const Locale* getAvailableLocales(int32_t& count);
00459 
00467     static URegistryKey registerFactory(NumberFormatFactory* toAdopt, UErrorCode& status);
00468 
00478     static UBool unregister(URegistryKey key, UErrorCode& status);
00479 
00486     static StringEnumeration* getAvailableLocales(void);
00487 
00497     UBool isGroupingUsed(void) const;
00498 
00505     virtual void setGroupingUsed(UBool newValue);
00506 
00515     int32_t getMaximumIntegerDigits(void) const;
00516 
00529     virtual void setMaximumIntegerDigits(int32_t newValue);
00530 
00539     int32_t getMinimumIntegerDigits(void) const;
00540 
00551     virtual void setMinimumIntegerDigits(int32_t newValue);
00552 
00561     int32_t getMaximumFractionDigits(void) const;
00562 
00573     virtual void setMaximumFractionDigits(int32_t newValue);
00574 
00583     int32_t getMinimumFractionDigits(void) const;
00584 
00595     virtual void setMinimumFractionDigits(int32_t newValue);
00596 
00608     virtual void setCurrency(const UChar* theCurrency);
00609 
00617     const UChar* getCurrency() const;
00618 
00619 public:
00620 
00632     virtual UClassID getDynamicClassID(void) const = 0;
00633 
00634 protected:
00635 
00640     NumberFormat();
00641 
00646     NumberFormat(const NumberFormat&);
00647 
00652     NumberFormat& operator=(const NumberFormat&);
00653 
00654 private:
00655     static const int32_t fgMaxIntegerDigits;
00656     static const int32_t fgMinIntegerDigits;
00657 
00658 private:
00659 
00660     enum EStyles {
00661         kNumberStyle,
00662         kCurrencyStyle,
00663         kPercentStyle,
00664         kScientificStyle,
00665         kStyleCount // ALWAYS LAST ENUM: number of styles
00666     };
00667     
00677     static NumberFormat* createInstance(const Locale& desiredLocale, EStyles choice, UErrorCode& success);
00678 
00686         static NumberFormat* makeInstance(const Locale& desiredLocale, EStyles choice, UErrorCode& success);
00687     static const int32_t    fgNumberPatternsCount;
00688     static const UChar* const fgLastResortNumberPatterns[];
00689 
00690     UBool      fGroupingUsed;
00691     int32_t     fMaxIntegerDigits;
00692     int32_t     fMinIntegerDigits;
00693     int32_t     fMaxFractionDigits;
00694     int32_t     fMinFractionDigits;
00695     UBool      fParseIntegerOnly;
00696 
00697     // ISO currency code
00698     UChar      currency[4];
00699 
00700     friend class ICUNumberFormatFactory; // access to makeInstance, EStyles
00701     friend class ICUNumberFormatService;
00702 };
00703 
00712 class U_I18N_API NumberFormatFactory : public UObject {
00713 public:
00714 
00721     virtual UBool visible(void) const = 0;
00722 
00728     virtual const UnicodeString * getSupportedIDs(int32_t &count, UErrorCode& status) const = 0;
00729 
00737     virtual NumberFormat* createFormat(const Locale& loc, UNumberFormatStyle formatType) = 0;
00738 };
00739 
00744 class U_I18N_API SimpleNumberFormatFactory : public NumberFormatFactory {
00745 protected:
00750     const UBool _visible;
00751 
00756     UnicodeString _id;
00757 
00758 public:
00762     SimpleNumberFormatFactory(const Locale& locale, UBool visible = TRUE)
00763       : _visible(visible)
00764       , _id(locale.getName())
00765     {
00766     }
00767 
00771     virtual UBool visible(void) const {
00772         return _visible;
00773     }
00774 
00778     virtual const UnicodeString * getSupportedIDs(int32_t &count, UErrorCode& status) const 
00779       {
00780         if (U_SUCCESS(status)) {
00781           count = 1;
00782           return &_id;
00783         }
00784         count = 0;
00785         return NULL;
00786       }
00787 };
00788 
00789 
00790 // -------------------------------------
00791 
00792 inline UBool
00793 NumberFormat::isParseIntegerOnly() const
00794 {
00795     return fParseIntegerOnly;
00796 }
00797 
00798 inline UnicodeString&
00799 NumberFormat::format(const Formattable& obj,
00800                      UnicodeString& appendTo,
00801                      UErrorCode& status) const {
00802     return Format::format(obj, appendTo, status);
00803 }
00804 
00805 U_NAMESPACE_END
00806 
00807 #endif /* #if !UCONFIG_NO_FORMATTING */
00808 
00809 #endif // _NUMFMT
00810 //eof

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