Chris@16: // (C) Copyright 2008 CodeRage, LLC (turkanis at coderage dot com)
Chris@16: // (C) Copyright 2003-2007 Jonathan Turkanis
Chris@16: // Distributed under the Boost Software License, Version 1.0. (See accompanying
Chris@16: // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt.)
Chris@16: 
Chris@16: // See http://www.boost.org/libs/iostreams for documentation.
Chris@16: 
Chris@16: #ifndef BOOST_IOSTREAMS_FILE_HPP_INCLUDED
Chris@16: #define BOOST_IOSTREAMS_FILE_HPP_INCLUDED
Chris@16: 
Chris@16: #if defined(_MSC_VER) && (_MSC_VER >= 1020)
Chris@16: # pragma once
Chris@16: #endif
Chris@16: 
Chris@16: #include <boost/iostreams/detail/config/wide_streams.hpp>
Chris@16: #ifndef BOOST_IOSTREAMS_NO_LOCALE
Chris@16: # include <locale>
Chris@16: #endif
Chris@16: #include <string>                               // pathnames, char_traits.
Chris@16: #include <boost/iostreams/categories.hpp>
Chris@16: #include <boost/iostreams/detail/ios.hpp>       // openmode, seekdir, int types.
Chris@16: #include <boost/iostreams/detail/fstream.hpp>
Chris@16: #include <boost/iostreams/operations.hpp>       // seek.
Chris@16: #include <boost/shared_ptr.hpp>      
Chris@16: 
Chris@16: // Must come last.
Chris@16: #include <boost/iostreams/detail/config/disable_warnings.hpp>  // MSVC.
Chris@16: 
Chris@16: namespace boost { namespace iostreams {
Chris@16: 
Chris@16: template<typename Ch>
Chris@16: class basic_file {
Chris@16: public:
Chris@16:     typedef Ch char_type;
Chris@16:     struct category
Chris@16:         : public seekable_device_tag,
Chris@16:           public closable_tag,
Chris@16:           public localizable_tag,
Chris@16:           public flushable_tag
Chris@16:         { };
Chris@16:     basic_file( const std::string& path,
Chris@16:                 BOOST_IOS::openmode mode =
Chris@16:                     BOOST_IOS::in | BOOST_IOS::out,
Chris@16:                 BOOST_IOS::openmode base_mode =
Chris@16:                     BOOST_IOS::in | BOOST_IOS::out );
Chris@16:     std::streamsize read(char_type* s, std::streamsize n);
Chris@16:     bool putback(char_type c);
Chris@16:     std::streamsize write(const char_type* s, std::streamsize n);
Chris@16:     std::streampos seek( stream_offset off, BOOST_IOS::seekdir way, 
Chris@16:                          BOOST_IOS::openmode which = 
Chris@16:                              BOOST_IOS::in | BOOST_IOS::out );
Chris@16:     void open( const std::string& path,
Chris@16:                BOOST_IOS::openmode mode =
Chris@16:                    BOOST_IOS::in | BOOST_IOS::out,
Chris@16:                BOOST_IOS::openmode base_mode =
Chris@16:                    BOOST_IOS::in | BOOST_IOS::out );
Chris@16:     bool is_open() const;
Chris@16:     void close();
Chris@16:     bool flush();
Chris@16: #ifndef BOOST_IOSTREAMS_NO_LOCALE
Chris@16:     void imbue(const std::locale& loc) { pimpl_->file_.pubimbue(loc);  }
Chris@16: #endif
Chris@16: private:
Chris@16:     struct impl {
Chris@16:         impl(const std::string& path, BOOST_IOS::openmode mode)
Chris@16:             { file_.open(path.c_str(), mode); }
Chris@16:         ~impl() { if (file_.is_open()) file_.close(); }
Chris@16:         BOOST_IOSTREAMS_BASIC_FILEBUF(Ch) file_;
Chris@16:     };
Chris@16:     shared_ptr<impl> pimpl_;
Chris@16: };
Chris@16: 
Chris@16: typedef basic_file<char>     file;
Chris@16: typedef basic_file<wchar_t>  wfile;
Chris@16: 
Chris@16: template<typename Ch>
Chris@16: struct basic_file_source : private basic_file<Ch> {
Chris@16:     typedef Ch char_type;
Chris@16:     struct category
Chris@16:         : input_seekable,
Chris@16:           device_tag,
Chris@16:           closable_tag
Chris@16:         { };
Chris@16:     using basic_file<Ch>::read;
Chris@16:     using basic_file<Ch>::putback;
Chris@16:     using basic_file<Ch>::seek;
Chris@16:     using basic_file<Ch>::is_open;
Chris@16:     using basic_file<Ch>::close;
Chris@16:     basic_file_source( const std::string& path,
Chris@16:                        BOOST_IOS::openmode mode = 
Chris@16:                            BOOST_IOS::in )
Chris@16:         : basic_file<Ch>(path, mode & ~BOOST_IOS::out, BOOST_IOS::in)
Chris@16:         { }
Chris@16:     void open( const std::string& path,
Chris@16:                BOOST_IOS::openmode mode = BOOST_IOS::in )
Chris@16:     {
Chris@16:         basic_file<Ch>::open(path, mode & ~BOOST_IOS::out, BOOST_IOS::in);
Chris@16:     }
Chris@16: };
Chris@16: 
Chris@16: typedef basic_file_source<char>     file_source;
Chris@16: typedef basic_file_source<wchar_t>  wfile_source;
Chris@16: 
Chris@16: template<typename Ch>
Chris@16: struct basic_file_sink : private basic_file<Ch> {
Chris@16:     typedef Ch char_type;
Chris@16:     struct category
Chris@16:         : output_seekable,
Chris@16:           device_tag,
Chris@16:           closable_tag,
Chris@16:           flushable_tag
Chris@16:         { };
Chris@16:     using basic_file<Ch>::write;
Chris@16:     using basic_file<Ch>::seek;
Chris@16:     using basic_file<Ch>::is_open;
Chris@16:     using basic_file<Ch>::close;
Chris@16:     using basic_file<Ch>::flush;
Chris@16:     basic_file_sink( const std::string& path,
Chris@16:                      BOOST_IOS::openmode mode = BOOST_IOS::out )
Chris@16:         : basic_file<Ch>(path, mode & ~BOOST_IOS::in, BOOST_IOS::out)
Chris@16:         { }
Chris@16:     void open( const std::string& path,
Chris@16:                BOOST_IOS::openmode mode = BOOST_IOS::out )
Chris@16:     {
Chris@16:         basic_file<Ch>::open(path, mode & ~BOOST_IOS::in, BOOST_IOS::out);
Chris@16:     }
Chris@16: };
Chris@16: 
Chris@16: typedef basic_file_sink<char>     file_sink;
Chris@16: typedef basic_file_sink<wchar_t>  wfile_sink;
Chris@16:                                  
Chris@16: //------------------Implementation of basic_file------------------------------//
Chris@16: 
Chris@16: template<typename Ch>
Chris@16: basic_file<Ch>::basic_file
Chris@16:     ( const std::string& path, BOOST_IOS::openmode mode, 
Chris@16:       BOOST_IOS::openmode base_mode )
Chris@16: { 
Chris@16:     open(path, mode, base_mode);
Chris@16: }
Chris@16: 
Chris@16: template<typename Ch>
Chris@16: inline std::streamsize basic_file<Ch>::read
Chris@16:     (char_type* s, std::streamsize n)
Chris@16: { 
Chris@16:     std::streamsize result = pimpl_->file_.sgetn(s, n); 
Chris@16:     return result != 0 ? result : -1;
Chris@16: }
Chris@16: 
Chris@16: template<typename Ch>
Chris@16: inline bool basic_file<Ch>::putback(char_type c)
Chris@16: { 
Chris@16:     return !!pimpl_->file_.sputbackc(c); 
Chris@16: }
Chris@16: 
Chris@16: template<typename Ch>
Chris@16: inline std::streamsize basic_file<Ch>::write
Chris@16:     (const char_type* s, std::streamsize n)
Chris@16: { return pimpl_->file_.sputn(s, n); }
Chris@16: 
Chris@16: template<typename Ch>
Chris@16: std::streampos basic_file<Ch>::seek
Chris@16:     ( stream_offset off, BOOST_IOS::seekdir way, 
Chris@16:       BOOST_IOS::openmode )
Chris@16: { return iostreams::seek(pimpl_->file_, off, way); }
Chris@16: 
Chris@16: template<typename Ch>
Chris@16: void basic_file<Ch>::open
Chris@16:     ( const std::string& path, BOOST_IOS::openmode mode, 
Chris@16:       BOOST_IOS::openmode base_mode )
Chris@16: { 
Chris@16:     pimpl_.reset(new impl(path, mode | base_mode));
Chris@16: }
Chris@16: 
Chris@16: template<typename Ch>
Chris@16: bool basic_file<Ch>::is_open() const { return pimpl_->file_.is_open(); }
Chris@16: 
Chris@16: template<typename Ch>
Chris@16: void basic_file<Ch>::close() { pimpl_->file_.close(); }
Chris@16: 
Chris@16: template<typename Ch>
Chris@16: bool basic_file<Ch>::flush()
Chris@16: { return pimpl_->file_.BOOST_IOSTREAMS_PUBSYNC() == 0; }
Chris@16: 
Chris@16: //----------------------------------------------------------------------------//
Chris@16: 
Chris@16: } } // End namespaces iostreams, boost.
Chris@16: 
Chris@16: #include <boost/iostreams/detail/config/enable_warnings.hpp> // MSVC
Chris@16: 
Chris@16: #endif // #ifndef BOOST_IOSTREAMS_FILE_HPP_INCLUDED