scuffed-code/icu4c/source/i18n/unicode/dtfmtsym.h
2000-05-15 18:39:17 +00:00

413 lines
14 KiB
C++

/*
********************************************************************************
* Copyright (C) 1997-1999, International Business Machines
* Corporation and others. All Rights Reserved.
********************************************************************************
*
* File DTFMTSYM.H
*
* Modification History:
*
* Date Name Description
* 02/19/97 aliu Converted from java.
* 07/21/98 stephen Added getZoneIndex()
* Changed to match C++ conventions
********************************************************************************
*/
#ifndef DTFMTSYM_H
#define DTFMTSYM_H
#include "unicode/utypes.h"
#include "unicode/locid.h"
#include "unicode/resbund.h"
/* forward declaration */
class SimpleDateFormat;
/**
* DateFormatSymbols is a public class for encapsulating localizable date-time
* formatting data -- including timezone data. DateFormatSymbols is used by
* DateFormat and SimpleDateFormat.
* <P>
* Rather than first creating a DateFormatSymbols to get a date-time formatter
* by using a SimpleDateFormat constructor, clients are encouraged to create a
* date-time formatter using the getTimeInstance(), getDateInstance(), or
* getDateTimeInstance() method in DateFormat. Each of these methods can return a
* date/time formatter initialized with a default format pattern along with the
* date-time formatting data for a given or default locale. After a formatter is
* created, clients may modify the format pattern using the setPattern function
* as so desired. For more information on using these formatter factory
* functions, see DateFormat.
* <P>
* If clients decide to create a date-time formatter with a particular format
* pattern and locale, they can do so with new SimpleDateFormat(aPattern,
* new DateFormatSymbols(aLocale)). This will load the appropriate date-time
* formatting data from the locale.
* <P>
* DateFormatSymbols objects are clonable. When clients obtain a
* DateFormatSymbols object, they can feel free to modify the date-time
* formatting data as necessary. For instance, clients can
* replace the localized date-time format pattern characters with the ones that
* they feel easy to remember. Or they can change the representative cities
* originally picked by default to using their favorite ones.
* <P>
* New DateFormatSymbols sub-classes may be added to support SimpleDateFormat
* for date-time formatting for additional locales.
*/
class U_I18N_API DateFormatSymbols {
public:
/**
* Construct a DateFormatSymbols object by loading format data from
* resources for the default locale.
* <P>
* NOTE: This constructor will never fail; if it cannot get resource
* data for the default locale, it will return a last-resort object
* based on hard-coded strings.
*
* @param status Output param set to success of failure. Failure
* results if the resources for the default cannot be
* found or cannot be loaded
* @stable
*/
DateFormatSymbols(UErrorCode& status);
/**
* Construct a DateFormatSymbols object by loading format data from
* resources for the given locale.
*
* @param locale Locale to load format data from.
* @param status Output param set to success of failure. Failure
* results if the resources for the locale cannot be
* found or cannot be loaded
* @stable
*/
DateFormatSymbols(const Locale& locale,
UErrorCode& status);
/**
* Copy constructor.
* @stable
*/
DateFormatSymbols(const DateFormatSymbols&);
/**
* Assignment operator.
* @stable
*/
DateFormatSymbols& operator=(const DateFormatSymbols&);
/**
* Destructor. This is nonvirtual because this class is not designed to be
* subclassed.
* @stable
*/
~DateFormatSymbols();
/**
* Return true if another object is semantically equal to this one.
* @stable
*/
bool_t operator==(const DateFormatSymbols& other) const;
/**
* Return true if another object is semantically unequal to this one.
* @stable
*/
bool_t operator!=(const DateFormatSymbols& other) const { return !operator==(other); }
/**
* Gets era strings. For example: "AD" and "BC".
* @return the era strings.
* @stable
*/
const UnicodeString* getEras(int32_t& count) const;
/**
* Sets era strings. For example: "AD" and "BC".
* @param eras Array of era strings (DateFormatSymbols retains ownership.)
* @param count Filled in with length of the array.
* @stable
*/
void setEras(const UnicodeString* eras, int32_t count);
/**
* Gets month strings. For example: "January", "February", etc.
* @param count Filled in with length of the array.
* @return the month strings. (DateFormatSymbols retains ownership.)
* @stable
*/
const UnicodeString* getMonths(int32_t& count) const;
/**
* Sets month strings. For example: "January", "February", etc.
* @param newMonths the new month strings. (not adopted; caller retains ownership)
* @stable
*/
void setMonths(const UnicodeString* months, int32_t count);
/**
* Gets short month strings. For example: "Jan", "Feb", etc.
* @return the short month strings. (DateFormatSymbols retains ownership.)
* @stable
*/
const UnicodeString* getShortMonths(int32_t& count) const;
/**
* Sets short month strings. For example: "Jan", "Feb", etc.
* @param newShortMonths the new short month strings. (not adopted; caller retains ownership)
* @stable
*/
void setShortMonths(const UnicodeString* shortMonths, int32_t count);
/**
* Gets weekday strings. For example: "Sunday", "Monday", etc.
* @return the weekday strings. (DateFormatSymbols retains ownership.)
* @stable
*/
const UnicodeString* getWeekdays(int32_t& count) const;
/**
* Sets weekday strings. For example: "Sunday", "Monday", etc.
* @param newWeekdays the new weekday strings. (not adopted; caller retains ownership)
* @stable
*/
void setWeekdays(const UnicodeString* weekdays, int32_t count);
/**
* Gets short weekday strings. For example: "Sun", "Mon", etc.
* @return the short weekday strings. (DateFormatSymbols retains ownership.)
* @stable
*/
const UnicodeString* getShortWeekdays(int32_t& count) const;
/**
* Sets short weekday strings. For example: "Sun", "Mon", etc.
* @param newShortWeekdays the new short weekday strings. (not adopted; caller retains ownership)
* @stable
*/
void setShortWeekdays(const UnicodeString* shortWeekdays, int32_t count);
/**
* Gets AM/PM strings. For example: "AM" and "PM".
* @return the weekday strings. (DateFormatSymbols retains ownership.)
* @stable
*/
const UnicodeString* getAmPmStrings(int32_t& count) const;
/**
* Sets ampm strings. For example: "AM" and "PM".
* @param newAmpms the new ampm strings. (not adopted; caller retains ownership)
* @stable
*/
void setAmPmStrings(const UnicodeString* ampms, int32_t count);
/**
* Gets timezone strings. These strings are stored in a 2-dimensional array.
* @param rowCount Output param to receive number of rows.
* @param columnCount Output param to receive number of columns.
* @return The timezone strings as a 2-d array. (DateFormatSymbols retains ownership.)
* @stable
*/
const UnicodeString** getZoneStrings(int32_t& rowCount, int32_t& columnCount) const;
/**
* Sets timezone strings. These strings are stored in a 2-dimensional array.
* @param strings The timezone strings as a 2-d array to be copied. (not adopted; caller retains ownership)
* @param rowCount The number of rows (count of first index).
* @param columnCount The number of columns (count of second index).
* @stable
*/
void setZoneStrings(const UnicodeString* const* strings, int32_t rowCount, int32_t columnCount);
/**
* Get the non-localized date-time pattern characters.
* @stable
*/
static const UnicodeString& getPatternChars(void) { return fgPatternChars; }
/**
* Gets localized date-time pattern characters. For example: 'u', 't', etc.
* @return the localized date-time pattern characters.
* @stable
*/
UnicodeString& getLocalPatternChars(UnicodeString& result) const;
/**
* Sets localized date-time pattern characters. For example: 'u', 't', etc.
* @param newLocalPatternChars the new localized date-time
* pattern characters.
* @stable
*/
void setLocalPatternChars(const UnicodeString& newLocalPatternChars);
private:
friend class SimpleDateFormat;
/**
* Era strings. For example: "AD" and "BC".
*/
UnicodeString* fEras;
int32_t fErasCount;
/**
* Month strings. For example: "January", "February", etc.
*/
UnicodeString* fMonths;
int32_t fMonthsCount;
/**
* Short month strings. For example: "Jan", "Feb", etc.
*/
UnicodeString* fShortMonths;
int32_t fShortMonthsCount;
/**
* Weekday strings. For example: "Sunday", "Monday", etc.
*/
UnicodeString* fWeekdays;
int32_t fWeekdaysCount;
/**
* Short weekday strings. For example: "Sun", "Mon", etc.
*/
UnicodeString* fShortWeekdays;
int32_t fShortWeekdaysCount;
/**
* Ampm strings. For example: "AM" and "PM".
*/
UnicodeString* fAmPms;
int32_t fAmPmsCount;
/**
* The format data of all the timezones in this locale.
*/
UnicodeString** fZoneStrings;
int32_t fZoneStringsRowCount;
int32_t fZoneStringsColCount;
/**
* Localized date-time pattern characters. For example: use 'u' as 'y'.
*/
UnicodeString fLocalPatternChars;
/**
* Unlocalized date-time pattern characters. For example: 'y', 'd', etc. All
* locales use the same these unlocalized pattern characters.
*/
static UnicodeString fgPatternChars;
private:
void initField(UnicodeString **field, int32_t& length, const ResourceBundle data, uint8_t ownfield, UErrorCode &status);
/**
* Called by the constructors to actually load data from the resources
*/
void initializeData(const Locale&, UErrorCode& status, bool_t useLastResortData = FALSE);
/**
* Copy or alias an array in another object, as appropriate.
*/
void assignArray(UnicodeString*& dstArray,
int32_t& dstCount,
const UnicodeString* srcArray,
int32_t srcCount,
const DateFormatSymbols& other,
int32_t which);
/**
* Return true if the given arrays' contents are equal, or if the arrays are
* identical (pointers are equal).
*/
static bool_t arrayCompare(const UnicodeString* array1,
const UnicodeString* array2,
int32_t count);
/**
* Create a copy, in fZoneStrings, of the given zone strings array. The
* member variables fZoneStringsRowCount and fZoneStringsColCount should be
* set already by the caller. The fIsOwned flags are not checked or set by
* this method; that is the caller's responsibility.
*/
void createZoneStrings(const UnicodeString *const * otherStrings);
/**
* Package private: used by SimpleDateFormat
* Gets the index for the given time zone ID to obtain the timezone
* strings for formatting. The time zone ID is just for programmatic
* lookup. NOT LOCALIZED!!!
* @param ID the given time zone ID.
* @return the index of the given time zone ID. Returns -1 if
* the given time zone ID can't be located in the DateFormatSymbols object.
* @see java.util.SimpleTimeZone
*/
int32_t getZoneIndex(const UnicodeString& ID) const;
/**
* Delete all the storage owned by this object and reset the fIsOwned flag
* to indicate that arrays have been deleted.
*/
void dispose(void);
/**
* Delete just the zone strings, if they are owned by this object. This
* method does NOT modify fIsOwned; the caller must handle that.
*/
void disposeZoneStrings(void);
/**
* These are static arrays we use only in the case where we have no
* resource data.
*/
static const UnicodeString fgLastResortMonthNames[];
static const UnicodeString fgLastResortDayNames[];
static const UnicodeString fgLastResortAmPmMarkers[];
static const UnicodeString fgLastResortEras[];
static const UnicodeString fgLastResortZoneStrings[];
static UnicodeString** fgLastResortZoneStringsH;
/**
* The member fIsOwned is a bit field with flags indicating which of the arrays
* we own. This is necessary since the user may alter our symbols, but in
* most cases, will not, so we do not want to copy these arrays unless
* necessary.
*/
enum
{
kEras,
kMonths,
kShortMonths,
kWeekdays,
kShortWeekdays,
kAmPms,
kZoneStrings
};
uint8_t fIsOwned;
/**
* Sets the fIsOwned flag for the specfied string array
*/
void setIsOwned(int32_t which, bool_t isOwned);
/**
* Tests the fIsOwned flag for the specified string array
*/
bool_t isOwned(int32_t which) const;
};
inline void
DateFormatSymbols::setIsOwned(int32_t which, bool_t isOwned)
{
fIsOwned = ( fIsOwned & ~(1 << which) ) | ( (isOwned ? 1 : 0) << which );
}
inline bool_t
DateFormatSymbols::isOwned(int32_t which) const
{
return ( (fIsOwned >> which) & 1 ) != 0;
}
#endif // _DTFMTSYM
//eof