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/*
*******************************************************************************
* Copyright (C) 2010-2011, International Business Machines Corporation and
* others. All Rights Reserved.
*******************************************************************************
*
*
* File NUMSYS.H
*
* Modification History:*
* Date Name Description
*
********************************************************************************
*/
#ifndef NUMSYS
#define NUMSYS
/**
* \def NUMSYS_NAME_CAPACITY
* Size of a numbering system name.
* @internal
*/
#define NUMSYS_NAME_CAPACITY 8
#include "unicode/utypes.h"
/**
* \file
* \brief C++ API: NumberingSystem object
*/
#if !UCONFIG_NO_FORMATTING
#include "unicode/format.h"
#include "unicode/uobject.h"
U_NAMESPACE_BEGIN
/**
* Defines numbering systems. A numbering system describes the scheme by which
* numbers are to be presented to the end user. In its simplest form, a numbering
* system describes the set of digit characters that are to be used to display
* numbers, such as Western digits, Thai digits, Arabic-Indic digits, etc.
* More complicated numbering systems are algorithmic in nature, and require use
* of an RBNF formatter ( rule based number formatter ), in order to calculate
* the characters to be displayed for a given number. Examples of algorithmic
* numbering systems include Roman numerals, Chinese numerals, and Hebrew numerals.
* Formatting rules for many commonly used numbering systems are included in
* the ICU package, based on the numbering system rules defined in CLDR.
* Alternate numbering systems can be specified to a locale by using the
* numbers locale keyword.
*/
class U_I18N_API NumberingSystem : public UObject {
public:
/**
* Default Constructor.
*
* @stable ICU 4.2
*/
NumberingSystem();
/**
* Copy constructor.
* @stable ICU 4.2
*/
NumberingSystem(const NumberingSystem& other);
/**
* Destructor.
* @stable ICU 4.2
*/
virtual ~NumberingSystem();
/**
* Create the default numbering system associated with the specified locale.
* @param inLocale The given locale.
* @param status ICU status
* @stable ICU 4.2
*/
static NumberingSystem* U_EXPORT2 createInstance(const Locale & inLocale, UErrorCode& status);
/**
* Create the default numbering system associated with the default locale.
* @stable ICU 4.2
*/
static NumberingSystem* U_EXPORT2 createInstance(UErrorCode& status);
/**
* Create a numbering system using the specified radix, type, and description.
* @param radix The radix (base) for this numbering system.
* @param isAlgorithmic TRUE if the numbering system is algorithmic rather than numeric.
* @param description The string representing the set of digits used in a numeric system, or the name of the RBNF
* ruleset to be used in an algorithmic system.
* @param status ICU status
* @stable ICU 4.2
*/
static NumberingSystem* U_EXPORT2 createInstance(int32_t radix, UBool isAlgorithmic, const UnicodeString& description, UErrorCode& status );
/**
* Return a StringEnumeration over all the names of numbering systems known to ICU.
* @stable ICU 4.2
*/
static StringEnumeration * U_EXPORT2 getAvailableNames(UErrorCode& status);
/**
* Create a numbering system from one of the predefined numbering systems known to ICU.
* @param name The name of the numbering system.
* @param status ICU status
* @stable ICU 4.2
*/
static NumberingSystem* U_EXPORT2 createInstanceByName(const char* name, UErrorCode& status);
/**
* Returns the radix of this numbering system.
* @stable ICU 4.2
*/
int32_t getRadix();
#ifndef U_HIDE_DRAFT_API
/**
* Returns the name of this numbering system if it was created using one of the predefined names
* known to ICU. Otherwise, returns NULL.
* @draft ICU 4.6
*/
const char * getName();
#endif /* U_HIDE_DRAFT_API */
/**
* Returns the description string of this numbering system, which is either
* the string of digits in the case of simple systems, or the ruleset name
* in the case of algorithmic systems.
* @stable ICU 4.2
*/
virtual UnicodeString getDescription();
/**
* Returns TRUE if the given numbering system is algorithmic
*
* @return TRUE if the numbering system is algorithmic.
* Otherwise, return FALSE.
* @stable ICU 4.2
*/
UBool isAlgorithmic() const;
/**
* ICU "poor man's RTTI", returns a UClassID for this class.
*
* @stable ICU 4.2
*
*/
static UClassID U_EXPORT2 getStaticClassID(void);
/**
* ICU "poor man's RTTI", returns a UClassID for the actual class.
*
* @stable ICU 4.2
*/
virtual UClassID getDynamicClassID() const;
private:
UnicodeString desc;
int32_t radix;
UBool algorithmic;
char name[NUMSYS_NAME_CAPACITY+1];
void setRadix(int32_t radix);
void setAlgorithmic(UBool algorithmic);
void setDesc(UnicodeString desc);
void setName(const char* name);
static UBool isValidDigitString(const UnicodeString &str);
UBool hasContiguousDecimalDigits() const;
};
U_NAMESPACE_END
#endif /* #if !UCONFIG_NO_FORMATTING */
#endif // _NUMSYS
//eof