gettext.h

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#ifndef GETTEXT_H
#define GETTEXT_H
 
#include <format>
#include <string>
#include <vector>
#include <libintl.h>
 
#define GETTEXT_CONTEXT_SEPARATOR "\004"
#define _(String) ::Nickvision::Localization::Gettext::dgettext(String)
#define _n(String, StringPlural, N) ::Nickvision::Localization::Gettext::dngettext(String, StringPlural, static_cast<unsigned long>(N))
#define _f(String, ...) ::Nickvision::Localization::Gettext::fgettext(String, __VA_ARGS__)
#define _fn(String, StringPlural, N, ...) ::Nickvision::Localization::Gettext::fngettext(String, StringPlural, static_cast<unsigned long>(N), __VA_ARGS__)
#define _p(Context, String) ::Nickvision::Localization::Gettext::pgettext(Context GETTEXT_CONTEXT_SEPARATOR String, String)
#define _pn(Context, String, StringPlural, N) ::Nickvision::Localization::Gettext::pngettext(Context GETTEXT_CONTEXT_SEPARATOR String, String, StringPlural, static_cast<unsigned long>(N))
 
namespace Nickvision::Localization::Gettext
{
    bool init(const std::string& domainName) noexcept;
    const std::string& getDomainName() noexcept;
    const std::vector<std::string>& getAvailableLanguages() noexcept;
    bool changeLanguage(const std::string& language) noexcept;
    const char* dgettext(const char* msgid) noexcept;
    const char* dngettext(const char* msg, const char* msgPlural, unsigned long n) noexcept;
    template<typename... Args>
    std::string fgettext(const char* msg, Args&&... args) noexcept
    {
        return std::vformat(Nickvision::Localization::Gettext::dgettext(msg), std::make_format_args(args...));
    }

    template<typename... Args>
    std::string fngettext(const char* msg, const char* msgPlural, unsigned long n, Args&&... args) noexcept
    {
        return std::vformat(Nickvision::Localization::Gettext::dngettext(msg, msgPlural, n), std::make_format_args(args...));
    }

    const char* pgettext(const char* context, const char* msg) noexcept;
    const char* pngettext(const char* context, const char* msg, const char* msgPlural, unsigned long n) noexcept;
}
 
#endif //GETTEXT_H