1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/os/ossrv/ossrv_pub/boost_apis/boost/iostreams/device/file.hpp Fri Jun 15 03:10:57 2012 +0200
1.3 @@ -0,0 +1,182 @@
1.4 +// (C) Copyright Jonathan Turkanis 2003.
1.5 +// Distributed under the Boost Software License, Version 1.0. (See accompanying
1.6 +// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt.)
1.7 +
1.8 +// See http://www.boost.org/libs/iostreams for documentation.
1.9 +
1.10 +//
1.11 +// Contains wrappers for standard file buffers, together
1.12 +// with convenience typedefs:
1.13 +// - basic_file_source
1.14 +// - basic_file_sink
1.15 +// - basic_file
1.16 +//
1.17 +
1.18 +#ifndef BOOST_IOSTREAMS_FILE_HPP_INCLUDED
1.19 +#define BOOST_IOSTREAMS_FILE_HPP_INCLUDED
1.20 +
1.21 +#if defined(_MSC_VER) && (_MSC_VER >= 1020)
1.22 +# pragma once
1.23 +#endif
1.24 +
1.25 +#include <boost/iostreams/detail/config/wide_streams.hpp>
1.26 +#ifndef BOOST_IOSTREAMS_NO_LOCALE
1.27 +# include <locale>
1.28 +#endif
1.29 +#include <string> // pathnames, char_traits.
1.30 +#include <boost/iostreams/categories.hpp>
1.31 +#include <boost/iostreams/detail/ios.hpp> // openmode, seekdir, int types.
1.32 +#include <boost/iostreams/detail/fstream.hpp>
1.33 +#include <boost/iostreams/operations.hpp> // seek.
1.34 +#include <boost/shared_ptr.hpp>
1.35 +
1.36 +// Must come last.
1.37 +#include <boost/iostreams/detail/config/disable_warnings.hpp> // MSVC.
1.38 +
1.39 +namespace boost { namespace iostreams {
1.40 +
1.41 +template<typename Ch>
1.42 +class basic_file {
1.43 +public:
1.44 + typedef Ch char_type;
1.45 + struct category
1.46 + : public seekable_device_tag,
1.47 + public closable_tag,
1.48 + public localizable_tag
1.49 + { };
1.50 + basic_file( const std::string& path,
1.51 + BOOST_IOS::openmode mode =
1.52 + BOOST_IOS::in | BOOST_IOS::out,
1.53 + BOOST_IOS::openmode base_mode =
1.54 + BOOST_IOS::in | BOOST_IOS::out );
1.55 + std::streamsize read(char_type* s, std::streamsize n);
1.56 + std::streamsize write(const char_type* s, std::streamsize n);
1.57 + stream_offset seek( stream_offset off, BOOST_IOS::seekdir way,
1.58 + BOOST_IOS::openmode which =
1.59 + BOOST_IOS::in | BOOST_IOS::out );
1.60 + void open( const std::string& path,
1.61 + BOOST_IOS::openmode mode =
1.62 + BOOST_IOS::in | BOOST_IOS::out,
1.63 + BOOST_IOS::openmode base_mode =
1.64 + BOOST_IOS::in | BOOST_IOS::out );
1.65 + bool is_open() const;
1.66 + void close();
1.67 +#ifndef BOOST_IOSTREAMS_NO_LOCALE
1.68 + void imbue(const std::locale& loc) { pimpl_->file_.pubimbue(loc); }
1.69 +#endif
1.70 +private:
1.71 + struct impl {
1.72 + impl(const std::string& path, BOOST_IOS::openmode mode)
1.73 + { file_.open(path.c_str(), mode); }
1.74 + ~impl() { if (file_.is_open()) file_.close(); }
1.75 + BOOST_IOSTREAMS_BASIC_FILEBUF(Ch) file_;
1.76 + };
1.77 + shared_ptr<impl> pimpl_;
1.78 +};
1.79 +
1.80 +typedef basic_file<char> file;
1.81 +typedef basic_file<wchar_t> wfile;
1.82 +
1.83 +template<typename Ch>
1.84 +struct basic_file_source : private basic_file<Ch> {
1.85 + typedef Ch char_type;
1.86 + struct category
1.87 + : input_seekable,
1.88 + device_tag,
1.89 + closable_tag
1.90 + { };
1.91 + using basic_file<Ch>::read;
1.92 + using basic_file<Ch>::seek;
1.93 + using basic_file<Ch>::is_open;
1.94 + using basic_file<Ch>::close;
1.95 + basic_file_source( const std::string& path,
1.96 + BOOST_IOS::openmode mode =
1.97 + BOOST_IOS::in )
1.98 + : basic_file<Ch>(path, mode & ~BOOST_IOS::out, BOOST_IOS::in)
1.99 + { }
1.100 + void open( const std::string& path,
1.101 + BOOST_IOS::openmode mode = BOOST_IOS::in )
1.102 + {
1.103 + basic_file<Ch>::open(path, mode & ~BOOST_IOS::out, BOOST_IOS::in);
1.104 + }
1.105 +};
1.106 +
1.107 +typedef basic_file_source<char> file_source;
1.108 +typedef basic_file_source<wchar_t> wfile_source;
1.109 +
1.110 +template<typename Ch>
1.111 +struct basic_file_sink : private basic_file<Ch> {
1.112 + typedef Ch char_type;
1.113 + struct category
1.114 + : output_seekable,
1.115 + device_tag,
1.116 + closable_tag
1.117 + { };
1.118 + using basic_file<Ch>::write;
1.119 + using basic_file<Ch>::seek;
1.120 + using basic_file<Ch>::is_open;
1.121 + using basic_file<Ch>::close;
1.122 + basic_file_sink( const std::string& path,
1.123 + BOOST_IOS::openmode mode = BOOST_IOS::out )
1.124 + : basic_file<Ch>(path, mode & ~BOOST_IOS::in, BOOST_IOS::out)
1.125 + { }
1.126 + void open( const std::string& path,
1.127 + BOOST_IOS::openmode mode = BOOST_IOS::out )
1.128 + {
1.129 + basic_file<Ch>::open(path, mode & ~BOOST_IOS::in, BOOST_IOS::out);
1.130 + }
1.131 +};
1.132 +
1.133 +typedef basic_file_sink<char> file_sink;
1.134 +typedef basic_file_sink<wchar_t> wfile_sink;
1.135 +
1.136 +//------------------Implementation of basic_file------------------------------//
1.137 +
1.138 +template<typename Ch>
1.139 +basic_file<Ch>::basic_file
1.140 + ( const std::string& path, BOOST_IOS::openmode mode,
1.141 + BOOST_IOS::openmode base_mode )
1.142 +{
1.143 + open(path, mode, base_mode);
1.144 +}
1.145 +
1.146 +template<typename Ch>
1.147 +inline std::streamsize basic_file<Ch>::read
1.148 + (char_type* s, std::streamsize n)
1.149 +{
1.150 + std::streamsize result = pimpl_->file_.sgetn(s, n);
1.151 + return result != 0 ? result : -1;
1.152 +}
1.153 +
1.154 +template<typename Ch>
1.155 +inline std::streamsize basic_file<Ch>::write
1.156 + (const char_type* s, std::streamsize n)
1.157 +{ return pimpl_->file_.sputn(s, n); }
1.158 +
1.159 +template<typename Ch>
1.160 +stream_offset basic_file<Ch>::seek
1.161 + ( stream_offset off, BOOST_IOS::seekdir way,
1.162 + BOOST_IOS::openmode )
1.163 +{ return iostreams::seek(pimpl_->file_, off, way); }
1.164 +
1.165 +template<typename Ch>
1.166 +void basic_file<Ch>::open
1.167 + ( const std::string& path, BOOST_IOS::openmode mode,
1.168 + BOOST_IOS::openmode base_mode )
1.169 +{
1.170 + pimpl_.reset(new impl(path, mode | base_mode));
1.171 +}
1.172 +
1.173 +template<typename Ch>
1.174 +bool basic_file<Ch>::is_open() const { return pimpl_->file_.is_open(); }
1.175 +
1.176 +template<typename Ch>
1.177 +void basic_file<Ch>::close() { pimpl_->file_.close(); }
1.178 +
1.179 +//----------------------------------------------------------------------------//
1.180 +
1.181 +} } // End namespaces iostreams, boost.
1.182 +
1.183 +#include <boost/iostreams/detail/config/enable_warnings.hpp> // MSVC
1.184 +
1.185 +#endif // #ifndef BOOST_IOSTREAMS_FILE_HPP_INCLUDED