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msgfmt.h

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00001 /*
00002 * Copyright (C) {1997-2003}, International Business Machines Corporation and others. All Rights Reserved.
00003 ********************************************************************************
00004 *
00005 * File MSGFMT.H
00006 *
00007 * Modification History:
00008 *
00009 *   Date        Name        Description
00010 *   02/19/97    aliu        Converted from java.
00011 *   03/20/97    helena      Finished first cut of implementation.
00012 *   07/22/98    stephen     Removed operator!= (defined in Format)
00013 *   08/19/2002  srl         Removing Javaisms
00014 ********************************************************************************
00015 */
00016 
00017 #ifndef MSGFMT_H
00018 #define MSGFMT_H
00019 
00020 #include "unicode/utypes.h"
00021 
00022 #if !UCONFIG_NO_FORMATTING
00023 
00024 #include "unicode/format.h"
00025 #include "unicode/locid.h"
00026 #include "unicode/parseerr.h"
00027 
00028 U_NAMESPACE_BEGIN
00029 
00030 class NumberFormat;
00031 class DateFormat;
00032 
00242 class U_I18N_API MessageFormat : public Format {
00243 public:
00249     enum EFormatNumber {
00255         kMaxFormat = 10
00256     };
00257 
00267     MessageFormat(const UnicodeString& pattern,
00268                   UErrorCode &status);
00269 
00278     MessageFormat(const UnicodeString& pattern,
00279                   const Locale& newLocale,
00280                         UErrorCode& status);
00291     MessageFormat(const UnicodeString& pattern,
00292                   const Locale& newLocale,
00293                   UParseError& parseError,
00294                   UErrorCode& status);
00299     MessageFormat(const MessageFormat&);
00300 
00305     const MessageFormat& operator=(const MessageFormat&);
00306 
00311     virtual ~MessageFormat();
00312 
00318     virtual Format* clone(void) const;
00319 
00327     virtual UBool operator==(const Format& other) const;
00328 
00335     virtual void setLocale(const Locale& theLocale);
00336 
00343     virtual const Locale& getLocale(void) const;
00344 
00353     virtual void applyPattern(const UnicodeString& pattern,
00354                               UErrorCode& status);
00365     virtual void applyPattern(const UnicodeString& pattern,
00366                              UParseError& parseError,
00367                              UErrorCode& status);
00368 
00377     virtual UnicodeString& toPattern(UnicodeString& appendTo) const;
00378 
00392     virtual void adoptFormats(Format** formatsToAdopt, int32_t count);
00393 
00405     virtual void setFormats(const Format** newFormats,int32_t cnt);
00406 
00407 
00418     virtual void adoptFormat(int32_t formatNumber, Format* formatToAdopt);
00419 
00429     virtual void setFormat(int32_t formatNumber, const Format& format);
00430 
00442     virtual const Format** getFormats(int32_t& count) const;
00443 
00458     UnicodeString& format(  const Formattable* source,
00459                             int32_t count,
00460                             UnicodeString& appendTo,
00461                             FieldPosition& ignore,
00462                             UErrorCode& status) const;
00463 
00478     static UnicodeString& format(   const UnicodeString& pattern,
00479                                     const Formattable* arguments,
00480                                     int32_t count,
00481                                     UnicodeString& appendTo,
00482                                     UErrorCode& status);
00483 
00501     virtual UnicodeString& format(const Formattable& obj,
00502                                   UnicodeString& appendTo,
00503                                   FieldPosition& pos,
00504                                   UErrorCode& status) const;
00505 
00520     UnicodeString& format(const Formattable& obj,
00521                           UnicodeString& appendTo,
00522                           UErrorCode& status) const;
00523 
00537     virtual Formattable* parse( const UnicodeString& source,
00538                                 ParsePosition& pos,
00539                                 int32_t& count) const;
00540 
00552     virtual Formattable* parse( const UnicodeString& source,
00553                                 int32_t& count,
00554                                 UErrorCode& status) const;
00555 
00568     virtual void parseObject(const UnicodeString& source,
00569                              Formattable& result,
00570                              ParsePosition& pos) const;
00571 
00583     virtual UClassID getDynamicClassID(void) const;
00584 
00596     static UClassID getStaticClassID(void);
00597     
00606     virtual Locale getLocale(ULocDataLocaleType type, UErrorCode& status) const;
00607 
00616     virtual const char* getLocaleInternal(ULocDataLocaleType type, UErrorCode &status) const;
00617 
00618 private:
00619 
00620     Locale              fLocale;
00621     UnicodeString       fPattern;
00622     Format**            formatAliases; // see getFormats
00623     int32_t             formatAliasesCapacity;
00624 
00625     MessageFormat(); // default constructor not implemented
00626 
00634     class Subformat {
00635     public:
00639         Format* format; // formatter
00643         int32_t offset; // offset into fPattern
00647         int32_t arg;    // 0-based argument number
00648 
00654         Subformat& operator=(const Subformat& that) {
00655             format = that.format ? that.format->clone() : NULL;
00656             offset = that.offset;
00657             arg = that.arg;
00658             return *this;
00659         }
00660 
00664         UBool operator==(const Subformat& that) const {
00665             // Do cheap comparisons first
00666             return offset == that.offset &&
00667                    arg == that.arg &&
00668                    ((format == that.format) || // handles NULL
00669                     (*format == *that.format));
00670         }
00671 
00675         UBool operator!=(const Subformat& that) const {
00676             return !operator==(that);
00677         }
00678     };
00679 
00684     Subformat* subformats;
00685     int32_t    subformatCount;
00686     int32_t    subformatCapacity;
00687 
00696     Formattable::Type* argTypes;
00697     int32_t            argTypeCount;
00698     int32_t            argTypeCapacity;
00699 
00700     // Variable-size array management
00701     UBool allocateSubformats(int32_t capacity);
00702     UBool allocateArgTypes(int32_t capacity);
00703 
00711     NumberFormat* defaultNumberFormat;
00712     DateFormat*   defaultDateFormat;
00713 
00718     const NumberFormat* getDefaultNumberFormat(UErrorCode&) const;
00719     const DateFormat*   getDefaultDateFormat(UErrorCode&) const;
00720 
00727     static int32_t findKeyword( const UnicodeString& s,
00728                                 const UChar * const *list);
00729 
00746     UnicodeString&  format( const Formattable* arguments,
00747                             int32_t cnt,
00748                             UnicodeString& appendTo,
00749                             FieldPosition& status,
00750                             int32_t recursionProtection,
00751                             UErrorCode& success) const;
00752 
00753     void             makeFormat(int32_t offsetNumber,
00754                                 UnicodeString* segments,
00755                                 UParseError& parseError,
00756                                 UErrorCode& success);
00757 
00761     NumberFormat* createIntegerFormat(const Locale& locale, UErrorCode& status) const;
00762 
00772     static void copyAndFixQuotes(const UnicodeString& appendTo, int32_t start, int32_t end, UnicodeString& target);
00773 
00782     const Formattable::Type* getArgTypeList(int32_t& listCount) const {
00783         listCount = argTypeCount;
00784         return argTypes; 
00785     }
00786 
00787     friend class MessageFormatAdapter; // getFormatTypeList() access
00788 };
00789 
00790 inline UnicodeString&
00791 MessageFormat::format(const Formattable& obj,
00792                       UnicodeString& appendTo,
00793                       UErrorCode& status) const {
00794     return Format::format(obj, appendTo, status);
00795 }
00796 U_NAMESPACE_END
00797 
00798 #endif /* #if !UCONFIG_NO_FORMATTING */
00799 
00800 #endif // _MSGFMT
00801 //eof

Generated on Mon Nov 24 14:35:33 2003 for ICU 2.8 by doxygen1.2.11.1 written by Dimitri van Heesch, © 1997-2001