135 lines
4.1 KiB
C++
135 lines
4.1 KiB
C++
// © 2016 and later: Unicode, Inc. and others.
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// License & terms of use: http://www.unicode.org/copyright.html
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/*
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*******************************************************************************
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* Copyright (C) 2015, International Business Machines Corporation
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* and others. All Rights Reserved.
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*******************************************************************************
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* standardplural.h
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*
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* created on: 2015dec14
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* created by: Markus W. Scherer
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*/
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#ifndef __STANDARDPLURAL_H__
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#define __STANDARDPLURAL_H__
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#include "unicode/utypes.h"
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#if !UCONFIG_NO_FORMATTING
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U_NAMESPACE_BEGIN
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class UnicodeString;
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/**
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* Standard CLDR plural form/category constants.
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* See http://www.unicode.org/reports/tr35/tr35-numbers.html#Language_Plural_Rules
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*/
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class U_I18N_API StandardPlural {
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public:
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enum Form {
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ZERO,
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ONE,
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TWO,
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FEW,
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MANY,
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OTHER,
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EQ_0,
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EQ_1,
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COUNT
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};
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/**
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* @return the lowercase CLDR keyword string for the plural form
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*/
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static const char *getKeyword(Form p);
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/**
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* @param keyword for example "few" or "other"
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* @return the plural form corresponding to the keyword, or OTHER
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*/
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static Form orOtherFromString(const char *keyword) {
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return static_cast<Form>(indexOrOtherIndexFromString(keyword));
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}
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/**
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* @param keyword for example "few" or "other"
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* @return the plural form corresponding to the keyword, or OTHER
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*/
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static Form orOtherFromString(const UnicodeString &keyword) {
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return static_cast<Form>(indexOrOtherIndexFromString(keyword));
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}
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/**
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* Sets U_ILLEGAL_ARGUMENT_ERROR if the keyword is not a plural form.
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*
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* @param keyword for example "few" or "other"
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* @return the plural form corresponding to the keyword
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*/
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static Form fromString(const char *keyword, UErrorCode &errorCode) {
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return static_cast<Form>(indexFromString(keyword, errorCode));
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}
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/**
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* Sets U_ILLEGAL_ARGUMENT_ERROR if the keyword is not a plural form.
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*
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* @param keyword for example "few" or "other"
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* @return the plural form corresponding to the keyword
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*/
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static Form fromString(const UnicodeString &keyword, UErrorCode &errorCode) {
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return static_cast<Form>(indexFromString(keyword, errorCode));
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}
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/**
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* @param keyword for example "few" or "other"
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* @return the index of the plural form corresponding to the keyword, or a negative value
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*/
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static int32_t indexOrNegativeFromString(const char *keyword);
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/**
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* @param keyword for example "few" or "other"
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* @return the index of the plural form corresponding to the keyword, or a negative value
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*/
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static int32_t indexOrNegativeFromString(const UnicodeString &keyword);
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/**
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* @param keyword for example "few" or "other"
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* @return the index of the plural form corresponding to the keyword, or OTHER
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*/
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static int32_t indexOrOtherIndexFromString(const char *keyword) {
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int32_t i = indexOrNegativeFromString(keyword);
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return i >= 0 ? i : OTHER;
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}
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/**
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* @param keyword for example "few" or "other"
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* @return the index of the plural form corresponding to the keyword, or OTHER
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*/
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static int32_t indexOrOtherIndexFromString(const UnicodeString &keyword) {
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int32_t i = indexOrNegativeFromString(keyword);
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return i >= 0 ? i : OTHER;
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}
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/**
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* Sets U_ILLEGAL_ARGUMENT_ERROR if the keyword is not a plural form.
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*
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* @param keyword for example "few" or "other"
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* @return the index of the plural form corresponding to the keyword
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*/
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static int32_t indexFromString(const char *keyword, UErrorCode &errorCode);
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/**
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* Sets U_ILLEGAL_ARGUMENT_ERROR if the keyword is not a plural form.
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*
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* @param keyword for example "few" or "other"
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* @return the index of the plural form corresponding to the keyword
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*/
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static int32_t indexFromString(const UnicodeString &keyword, UErrorCode &errorCode);
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};
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U_NAMESPACE_END
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#endif // !UCONFIG_NO_FORMATTING
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#endif // __STANDARDPLURAL_H__
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