gettext_plural_form.h

Go to the documentation of this file.

// Minetest
// SPDX-License-Identifier: LGPL-2.1-or-later
 
#pragma once
#include <string_view>
#include <memory>
 
// Note that this only implements a subset of C expressions. See:
// https://git.savannah.gnu.org/gitweb/?p=gettext.git;a=blob;f=gettext-runtime/intl/plural.y
class GettextPluralForm
{
public:
        using NumT = unsigned long;
        using Ptr = std::shared_ptr<GettextPluralForm>;
 
        size_t size() const
        {
                return nplurals;
        };
        virtual NumT operator()(const NumT) const = 0;
        virtual operator bool() const
        {
                return size() > 0;
        }
        virtual ~GettextPluralForm() {};
 
        static GettextPluralForm::Ptr parse(const size_t nplurals, const std::wstring_view &str);
        static GettextPluralForm::Ptr parseHeaderLine(const std::wstring_view &str);
protected:
        GettextPluralForm(size_t nplurals): nplurals(nplurals) {};
private:
        const size_t nplurals;
};