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authorDevtools Arcadia <arcadia-devtools@yandex-team.ru>2022-02-07 18:08:42 +0300
committerDevtools Arcadia <arcadia-devtools@mous.vla.yp-c.yandex.net>2022-02-07 18:08:42 +0300
commit1110808a9d39d4b808aef724c861a2e1a38d2a69 (patch)
treee26c9fed0de5d9873cce7e00bc214573dc2195b7 /contrib/libs/icu/include/unicode/numsys.h
downloadydb-1110808a9d39d4b808aef724c861a2e1a38d2a69.tar.gz
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+// © 2016 and later: Unicode, Inc. and others.
+// License & terms of use: http://www.unicode.org/copyright.html
+/*
+*******************************************************************************
+* Copyright (C) 2010-2014, International Business Machines Corporation and
+* others. All Rights Reserved.
+*******************************************************************************
+*
+*
+* File NUMSYS.H
+*
+* Modification History:*
+* Date Name Description
+*
+********************************************************************************
+*/
+
+#ifndef NUMSYS
+#define NUMSYS
+
+#include "unicode/utypes.h"
+
+#if U_SHOW_CPLUSPLUS_API
+
+/**
+ * \file
+ * \brief C++ API: NumberingSystem object
+ */
+
+#if !UCONFIG_NO_FORMATTING
+
+#include "unicode/format.h"
+#include "unicode/uobject.h"
+
+U_NAMESPACE_BEGIN
+
+// can't be #ifndef U_HIDE_INTERNAL_API; needed for char[] field size
+/**
+ * Size of a numbering system name.
+ * @internal
+ */
+constexpr const size_t kInternalNumSysNameCapacity = 8;
+
+/**
+ * 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., in a
+ * positional numbering system with a specified radix (typically 10).
+ * 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);
+
+ /**
+ * Copy assignment.
+ * @stable ICU 4.2
+ */
+ NumberingSystem& operator=(const NumberingSystem& other) = default;
+
+ /**
+ * 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.
+ * The numbering system names will be in alphabetical (invariant) order.
+ *
+ * The returned StringEnumeration is owned by the caller, who must delete it when
+ * finished with it.
+ *
+ * @stable ICU 4.2
+ */
+ static StringEnumeration * U_EXPORT2 getAvailableNames(UErrorCode& status);
+
+ /**
+ * Create a numbering system from one of the predefined numbering systems specified
+ * by CLDR and known to ICU, such as "latn", "arabext", or "hanidec"; the full list
+ * is returned by unumsys_openAvailableNames. Note that some of the names listed at
+ * http://unicode.org/repos/cldr/tags/latest/common/bcp47/number.xml - e.g.
+ * default, native, traditional, finance - do not identify specific numbering systems,
+ * but rather key values that may only be used as part of a locale, which in turn
+ * defines how they are mapped to a specific numbering system such as "latn" or "hant".
+ *
+ * @param name The name of the numbering system.
+ * @param status ICU status; set to U_UNSUPPORTED_ERROR if numbering system not found.
+ * @return The NumberingSystem instance, or nullptr if not found.
+ * @stable ICU 4.2
+ */
+ static NumberingSystem* U_EXPORT2 createInstanceByName(const char* name, UErrorCode& status);
+
+
+ /**
+ * Returns the radix of this numbering system. Simple positional numbering systems
+ * typically have radix 10, but might have a radix of e.g. 16 for hexadecimal. The
+ * radix is less well-defined for non-positional algorithmic systems.
+ * @stable ICU 4.2
+ */
+ int32_t getRadix() const;
+
+ /**
+ * Returns the name of this numbering system if it was created using one of the predefined names
+ * known to ICU. Otherwise, returns NULL.
+ * The predefined names are identical to the numbering system names as defined by
+ * the BCP47 definition in Unicode CLDR.
+ * See also, http://www.unicode.org/repos/cldr/tags/latest/common/bcp47/number.xml
+ * @stable ICU 4.6
+ */
+ const char * getName() const;
+
+ /**
+ * Returns the description string of this numbering system. For simple
+ * positional systems this is the ordered string of digits (with length matching
+ * the radix), e.g. "\u3007\u4E00\u4E8C\u4E09\u56DB\u4E94\u516D\u4E03\u516B\u4E5D"
+ * for "hanidec"; it would be "0123456789ABCDEF" for hexadecimal. For
+ * algorithmic systems this is the name of the RBNF ruleset used for formatting,
+ * e.g. "zh/SpelloutRules/%spellout-cardinal" for "hans" or "%greek-upper" for
+ * "grek".
+ * @stable ICU 4.2
+ */
+ virtual UnicodeString getDescription() const;
+
+
+
+ /**
+ * 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[kInternalNumSysNameCapacity+1];
+
+ void setRadix(int32_t radix);
+
+ void setAlgorithmic(UBool algorithmic);
+
+ void setDesc(const 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 /* U_SHOW_CPLUSPLUS_API */
+
+#endif // _NUMSYS
+//eof