diff options
Diffstat (limited to 'zen/i18n.h')
| -rw-r--r-- | zen/i18n.h | 39 |
1 files changed, 25 insertions, 14 deletions
@@ -4,8 +4,8 @@ // * Copyright (C) Zenju (zenju AT gmx DOT de) - All Rights Reserved * // ************************************************************************** -#ifndef I18_N_HEADER_3843489325045 -#define I18_N_HEADER_3843489325045 +#ifndef I18_N_H_3843489325044253425456 +#define I18_N_H_3843489325044253425456 #include <string> #include <memory> @@ -28,18 +28,24 @@ namespace zen { -//implement handler to enable program wide localizations: implement THREAD-SAFE ACCESS! +//implement handler to enable program wide localizations: struct TranslationHandler { + //THREAD-SAFETY: "const" member must model thread-safe access! + TranslationHandler() {} virtual ~TranslationHandler() {} //C++11: std::wstring should be thread-safe like an int - virtual std::wstring translate(const std::wstring& text) = 0; //simple translation - virtual std::wstring translate(const std::wstring& singular, const std::wstring& plural, std::int64_t n) = 0; + virtual std::wstring translate(const std::wstring& text) const = 0; //simple translation + virtual std::wstring translate(const std::wstring& singular, const std::wstring& plural, std::int64_t n) const = 0; + +private: + TranslationHandler (const TranslationHandler&) = delete; + TranslationHandler& operator=(const TranslationHandler&) = delete; }; -void setTranslator(std::unique_ptr<TranslationHandler>&& newHandler = nullptr); //take ownership -TranslationHandler* getTranslator(); +void setTranslator(std::unique_ptr<const TranslationHandler>&& newHandler = nullptr); //take ownership +const TranslationHandler* getTranslator(); @@ -59,12 +65,13 @@ namespace implementation inline std::wstring translate(const std::wstring& text) { - if (TranslationHandler* t = getTranslator()) + if (const TranslationHandler* t = getTranslator()) return t->translate(text); return text; } + //translate plural forms: "%x day" "%x days" //returns "1 day" if n == 1; "123 days" if n == 123 for english language inline @@ -72,7 +79,7 @@ std::wstring translate(const std::wstring& singular, const std::wstring& plural, { assert(contains(plural, L"%x")); - if (TranslationHandler* t = getTranslator()) + if (const TranslationHandler* t = getTranslator()) { std::wstring translation = t->translate(singular, plural, n); assert(!contains(translation, L"%x")); @@ -82,6 +89,7 @@ std::wstring translate(const std::wstring& singular, const std::wstring& plural, return replaceCpy(std::abs(n) == 1 ? singular : plural, L"%x", toGuiString(n)); } + template <class T> inline std::wstring translate(const std::wstring& singular, const std::wstring& plural, T n) { @@ -89,19 +97,22 @@ std::wstring translate(const std::wstring& singular, const std::wstring& plural, return translate(singular, plural, static_cast<std::int64_t>(n)); } + inline -std::unique_ptr<TranslationHandler>& globalHandler() +std::unique_ptr<const TranslationHandler>& globalHandler() { - static std::unique_ptr<TranslationHandler> inst; //external linkage even in header! + static std::unique_ptr<const TranslationHandler> inst; //external linkage even in header! return inst; } } + inline -void setTranslator(std::unique_ptr<TranslationHandler>&& newHandler) { implementation::globalHandler() = std::move(newHandler); } +void setTranslator(std::unique_ptr<const TranslationHandler>&& newHandler) { implementation::globalHandler() = std::move(newHandler); } + inline -TranslationHandler* getTranslator() { return implementation::globalHandler().get(); } +const TranslationHandler* getTranslator() { return implementation::globalHandler().get(); } } -#endif //I18_N_HEADER_3843489325045 +#endif //I18_N_H_3843489325044253425456 |