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