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138 lines
3.6 KiB
C++
138 lines
3.6 KiB
C++
/*
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* Copyright (c) 2021-2023, The PurpleI2P Project
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*
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* This file is part of Purple i2pd project and licensed under BSD3
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*
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* See full license text in LICENSE file at top of project tree
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*/
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#ifndef __I18N_H__
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#define __I18N_H__
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#include <string>
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#include <map>
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#include <utility>
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#include <functional>
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namespace i2p
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{
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namespace i18n
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{
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class Locale
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{
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public:
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Locale (
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const std::string& language,
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const std::map<std::string, std::string>& strings,
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const std::map<std::string, std::vector<std::string>>& plurals,
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std::function<int(int)> formula
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): m_Language (language), m_Strings (strings), m_Plurals (plurals), m_Formula (formula) { };
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// Get activated language name for webconsole
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std::string GetLanguage() const
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{
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return m_Language;
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}
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std::string GetString (const std::string& arg) const
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{
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const auto it = m_Strings.find(arg);
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if (it == m_Strings.end())
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{
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return arg;
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}
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else
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{
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return it->second;
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}
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}
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std::string GetPlural (const std::string& arg, const std::string& arg2, const int& n) const
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{
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const auto it = m_Plurals.find(arg2);
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if (it == m_Plurals.end()) // not found, fallback to english
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{
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return n == 1 ? arg : arg2;
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}
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else
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{
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int form = m_Formula(n);
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return it->second[form];
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}
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}
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private:
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const std::string m_Language;
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const std::map<std::string, std::string> m_Strings;
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const std::map<std::string, std::vector<std::string>> m_Plurals;
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std::function<int(int)> m_Formula;
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};
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void SetLanguage(const std::string &lang);
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std::string translate (const std::string& arg);
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std::string translate (const std::string& arg, const std::string& arg2, const int& n);
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} // i18n
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} // i2p
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/**
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* @brief Get translation of string
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* @param arg String with message
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*/
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template<typename TValue>
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std::string tr (TValue&& arg)
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{
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return i2p::i18n::translate(std::forward<TValue>(arg));
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}
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/**
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* @brief Get translation of string and format it
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* @param arg String with message
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* @param args Array of arguments for string formatting
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*/
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template<typename TValue, typename... TArgs>
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std::string tr (TValue&& arg, TArgs&&... args)
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{
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std::string tr_str = i2p::i18n::translate(std::forward<TValue>(arg));
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size_t size = std::snprintf(NULL, 0, tr_str.c_str(), std::forward<TArgs>(args)...);
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size = size + 1;
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std::string str(size, 0);
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std::snprintf(&str.front(), size, tr_str.c_str(), std::forward<TArgs>(args)...);
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return str;
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}
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/**
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* @brief Get translation of string with plural forms
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* @param arg String with message in singular form
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* @param arg2 String with message in plural form
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* @param n Integer, used for selection of form
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*/
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template<typename TValue, typename TValue2>
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std::string ntr (TValue&& arg, TValue2&& arg2, int& n)
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{
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return i2p::i18n::translate(std::forward<TValue>(arg), std::forward<TValue2>(arg2), std::forward<int>(n));
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}
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/**
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* @brief Get translation of string with plural forms and format it
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* @param arg String with message in singular form
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* @param arg2 String with message in plural form
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* @param n Integer, used for selection of form
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* @param args Array of arguments for string formatting
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*/
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template<typename TValue, typename TValue2, typename... TArgs>
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std::string ntr (TValue&& arg, TValue2&& arg2, int& n, TArgs&&... args)
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{
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std::string tr_str = i2p::i18n::translate(std::forward<TValue>(arg), std::forward<TValue2>(arg2), std::forward<int>(n));
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size_t size = std::snprintf(NULL, 0, tr_str.c_str(), std::forward<TArgs>(args)...);
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size = size + 1;
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std::string str(size, 0);
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std::snprintf(&str.front(), size, tr_str.c_str(), std::forward<TArgs>(args)...);
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return str;
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}
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#endif // __I18N_H__
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