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160 lines
5.5 KiB
C++
160 lines
5.5 KiB
C++
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//
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// Copyright (c) 2009-2011 Artyom Beilis (Tonkikh)
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//
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// Distributed under the Boost Software License, Version 1.0. (See
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// accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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//
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#ifndef BOOST_LOCALE_LOCALIZATION_BACKEND_HPP
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#define BOOST_LOCALE_LOCALIZATION_BACKEND_HPP
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#include <boost/locale/config.hpp>
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#include <boost/locale/generator.hpp>
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#ifdef BOOST_MSVC
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# pragma warning(push)
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# pragma warning(disable : 4275 4251 4231 4660)
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#endif
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#include <string>
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#include <locale>
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#include <vector>
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#include <memory>
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namespace boost {
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namespace locale {
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///
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/// \brief this class represents a localization backend that can be used for localizing your application.
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///
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/// Backends are usually registered inside the localization backends manager and allow transparent support
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/// of different backends, so a user can switch the backend by simply linking the application to the correct one.
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///
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/// Backends may support different tuning options, but these are the default options available to the user
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/// for all of them
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///
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/// -# \c locale - the name of the locale in POSIX format like en_US.UTF-8
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/// -# \c use_ansi_encoding - select system locale using ANSI codepages rather then UTF-8 under Windows
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/// by default
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/// -# \c message_path - path to the location of message catalogs (vector of strings)
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/// -# \c message_application - the name of applications that use message catalogs (vector of strings)
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///
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/// Each backend can be installed with a different default priotiry so when you work with two different backends, you
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/// can specify priotiry so this backend will be chosen according to their priority.
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///
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class localization_backend {
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localization_backend(localization_backend const &);
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void operator=(localization_backend const &);
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public:
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localization_backend()
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{
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}
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virtual ~localization_backend()
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{
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}
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///
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/// Make a polymorphic copy of the backend
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///
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virtual localization_backend *clone() const = 0;
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///
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/// Set option for backend, for example "locale" or "encoding"
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///
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virtual void set_option(std::string const &name,std::string const &value) = 0;
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///
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/// Clear all options
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///
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virtual void clear_options() = 0;
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///
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/// Create a facet for category \a category and character type \a type
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///
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virtual std::locale install(std::locale const &base,locale_category_type category,character_facet_type type = nochar_facet) = 0;
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}; // localization_backend
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///
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/// \brief Localization backend manager is a class that holds various backend and allows creation
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/// of their combination or selection
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///
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class BOOST_LOCALE_DECL localization_backend_manager {
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public:
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///
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/// New empty localization_backend_manager
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///
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localization_backend_manager();
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///
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/// Copy localization_backend_manager
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///
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localization_backend_manager(localization_backend_manager const &);
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///
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/// Assign localization_backend_manager
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///
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localization_backend_manager const &operator=(localization_backend_manager const &);
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///
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/// Destructor
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///
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~localization_backend_manager();
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///
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/// Create new localization backend according to current settings.
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///
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std::auto_ptr<localization_backend> get() const;
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///
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/// Add new backend to the manager, each backend should be uniquely defined by its name.
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///
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/// This library provides: "icu", "posix", "winapi" and "std" backends.
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///
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void add_backend(std::string const &name,std::auto_ptr<localization_backend> backend);
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///
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/// Clear backend
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///
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void remove_all_backends();
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///
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/// Get list of all available backends
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///
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std::vector<std::string> get_all_backends() const;
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///
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/// Select specific backend by name for a category \a category. It allows combining different
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/// backends for user preferences.
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///
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void select(std::string const &backend_name,locale_category_type category = all_categories);
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///
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/// Set new global backend manager, the old one is returned.
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///
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/// This function is thread safe
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///
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static localization_backend_manager global(localization_backend_manager const &);
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///
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/// Get global backend manager
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///
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/// This function is thread safe
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///
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static localization_backend_manager global();
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private:
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class impl;
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std::auto_ptr<impl> pimpl_;
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};
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} // locale
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} // boost
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#ifdef BOOST_MSVC
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#pragma warning(pop)
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#endif
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#endif
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// vim: tabstop=4 expandtab shiftwidth=4 softtabstop=4
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