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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.
// Inspired by fdstream.hpp, (C) Copyright Nicolai M. Josuttis 2001,
// available at http://www.josuttis.com/cppcode/fdstream.html.
#ifndef BOOST_IOSTREAMS_FILE_DESCRIPTOR_HPP_INCLUDED
#define BOOST_IOSTREAMS_FILE_DESCRIPTOR_HPP_INCLUDED
#if defined(_MSC_VER)
# pragma once
#endif
#include <string>
#include <boost/cstdint.hpp> // intmax_t.
#include <boost/iostreams/categories.hpp> // tags.
#include <boost/iostreams/detail/config/auto_link.hpp>
#include <boost/iostreams/detail/config/dyn_link.hpp>
#include <boost/iostreams/detail/config/windows_posix.hpp>
#include <boost/iostreams/detail/file_handle.hpp>
#include <boost/iostreams/detail/ios.hpp> // openmode, seekdir, int types.
#include <boost/iostreams/detail/path.hpp>
#include <boost/iostreams/positioning.hpp>
#include <boost/shared_ptr.hpp>
// Must come last.
#if defined(BOOST_MSVC)
# pragma warning(push)
# pragma warning(disable:4251) // Missing DLL interface for shared_ptr
#endif
#include <boost/config/abi_prefix.hpp>
namespace boost { namespace iostreams {
// Forward declarations
class file_descriptor_source;
class file_descriptor_sink;
namespace detail { struct file_descriptor_impl; }
enum file_descriptor_flags
{
never_close_handle = 0,
close_handle = 3
};
class BOOST_IOSTREAMS_DECL file_descriptor {
public:
friend class file_descriptor_source;
friend class file_descriptor_sink;
typedef detail::file_handle handle_type;
typedef char char_type;
struct category
: seekable_device_tag,
closable_tag
{ };
// Default constructor
file_descriptor();
// Constructors taking file desciptors
file_descriptor(handle_type fd, file_descriptor_flags);
#ifdef BOOST_IOSTREAMS_WINDOWS
file_descriptor(int fd, file_descriptor_flags);
#endif
#if defined(BOOST_IOSTREAMS_USE_DEPRECATED)
// Constructors taking file desciptors
explicit file_descriptor(handle_type fd, bool close_on_exit = false);
#ifdef BOOST_IOSTREAMS_WINDOWS
explicit file_descriptor(int fd, bool close_on_exit = false);
#endif
#endif
// Constructor taking a std:: string
explicit file_descriptor( const std::string& path,
BOOST_IOS::openmode mode =
BOOST_IOS::in | BOOST_IOS::out );
// Constructor taking a C-style string
explicit file_descriptor( const char* path,
BOOST_IOS::openmode mode =
BOOST_IOS::in | BOOST_IOS::out );
// Constructor taking a Boost.Filesystem path
template<typename Path>
explicit file_descriptor( const Path& path,
BOOST_IOS::openmode mode =
BOOST_IOS::in | BOOST_IOS::out )
{
init();
open(detail::path(path), mode);
}
// Copy constructor
file_descriptor(const file_descriptor& other);
// open overloads taking file descriptors
void open(handle_type fd, file_descriptor_flags);
#ifdef BOOST_IOSTREAMS_WINDOWS
void open(int fd, file_descriptor_flags);
#endif
#if defined(BOOST_IOSTREAMS_USE_DEPRECATED)
// open overloads taking file descriptors
void open(handle_type fd, bool close_on_exit = false);
#ifdef BOOST_IOSTREAMS_WINDOWS
void open(int fd, bool close_on_exit = false);
#endif
#endif
// open overload taking a std::string
void open( const std::string& path,
BOOST_IOS::openmode mode =
BOOST_IOS::in | BOOST_IOS::out );
// open overload taking C-style string
void open( const char* path,
BOOST_IOS::openmode mode =
BOOST_IOS::in | BOOST_IOS::out );
// open overload taking a Boost.Filesystem path
template<typename Path>
void open( const Path& path,
BOOST_IOS::openmode mode =
BOOST_IOS::in | BOOST_IOS::out )
{ open(detail::path(path), mode); }
bool is_open() const;
void close();
std::streamsize read(char_type* s, std::streamsize n);
std::streamsize write(const char_type* s, std::streamsize n);
std::streampos seek(stream_offset off, BOOST_IOS::seekdir way);
handle_type handle() const;
private:
void init();
// open overload taking a detail::path
void open( const detail::path& path,
BOOST_IOS::openmode,
BOOST_IOS::openmode = BOOST_IOS::openmode(0) );
typedef detail::file_descriptor_impl impl_type;
shared_ptr<impl_type> pimpl_;
};
class BOOST_IOSTREAMS_DECL file_descriptor_source : private file_descriptor {
public:
#ifdef BOOST_IOSTREAMS_WINDOWS
typedef void* handle_type; // A.k.a HANDLE
#else
typedef int handle_type;
#endif
typedef char char_type;
struct category
: input_seekable,
device_tag,
closable_tag
{ };
using file_descriptor::is_open;
using file_descriptor::close;
using file_descriptor::read;
using file_descriptor::seek;
using file_descriptor::handle;
// Default constructor
file_descriptor_source() { }
// Constructors taking file desciptors
explicit file_descriptor_source(handle_type fd, file_descriptor_flags);
#ifdef BOOST_IOSTREAMS_WINDOWS
explicit file_descriptor_source(int fd, file_descriptor_flags);
#endif
#if defined(BOOST_IOSTREAMS_USE_DEPRECATED)
// Constructors taking file desciptors
explicit file_descriptor_source(handle_type fd, bool close_on_exit = false);
#ifdef BOOST_IOSTREAMS_WINDOWS
explicit file_descriptor_source(int fd, bool close_on_exit = false);
#endif
#endif
// Constructor taking a std:: string
explicit file_descriptor_source( const std::string& path,
BOOST_IOS::openmode mode = BOOST_IOS::in );
// Constructor taking a C-style string
explicit file_descriptor_source( const char* path,
BOOST_IOS::openmode mode = BOOST_IOS::in );
// Constructor taking a Boost.Filesystem path
template<typename Path>
explicit file_descriptor_source( const Path& path,
BOOST_IOS::openmode mode = BOOST_IOS::in )
{ open(detail::path(path), mode); }
// Copy constructor
file_descriptor_source(const file_descriptor_source& other);
// Constructors taking file desciptors
void open(handle_type fd, file_descriptor_flags);
#ifdef BOOST_IOSTREAMS_WINDOWS
void open(int fd, file_descriptor_flags);
#endif
#if defined(BOOST_IOSTREAMS_USE_DEPRECATED)
// open overloads taking file descriptors
void open(handle_type fd, bool close_on_exit = false);
#ifdef BOOST_IOSTREAMS_WINDOWS
void open(int fd, bool close_on_exit = false);
#endif
#endif
// open overload taking a std::string
void open(const std::string& path, BOOST_IOS::openmode mode = BOOST_IOS::in);
// open overload taking C-style string
void open(const char* path, BOOST_IOS::openmode mode = BOOST_IOS::in);
// open overload taking a Boost.Filesystem path
template<typename Path>
void open(const Path& path, BOOST_IOS::openmode mode = BOOST_IOS::in);
private:
// open overload taking a detail::path
void open(const detail::path& path, BOOST_IOS::openmode);
};
class BOOST_IOSTREAMS_DECL file_descriptor_sink : private file_descriptor {
public:
#ifdef BOOST_IOSTREAMS_WINDOWS
typedef void* handle_type; // A.k.a HANDLE
#else
typedef int handle_type;
#endif
typedef char char_type;
struct category
: output_seekable,
device_tag,
closable_tag
{ };
using file_descriptor::is_open;
using file_descriptor::close;
using file_descriptor::write;
using file_descriptor::seek;
using file_descriptor::handle;
// Default constructor
file_descriptor_sink() { }
// Constructors taking file desciptors
file_descriptor_sink(handle_type fd, file_descriptor_flags);
#ifdef BOOST_IOSTREAMS_WINDOWS
file_descriptor_sink(int fd, file_descriptor_flags);
#endif
#if defined(BOOST_IOSTREAMS_USE_DEPRECATED)
// Constructors taking file desciptors
explicit file_descriptor_sink(handle_type fd, bool close_on_exit = false);
#ifdef BOOST_IOSTREAMS_WINDOWS
explicit file_descriptor_sink(int fd, bool close_on_exit = false);
#endif
#endif
// Constructor taking a std:: string
explicit file_descriptor_sink( const std::string& path,
BOOST_IOS::openmode mode = BOOST_IOS::out );
// Constructor taking a C-style string
explicit file_descriptor_sink( const char* path,
BOOST_IOS::openmode mode = BOOST_IOS::out );
// Constructor taking a Boost.Filesystem path
template<typename Path>
explicit file_descriptor_sink( const Path& path,
BOOST_IOS::openmode mode = BOOST_IOS::out )
{ open(detail::path(path), mode); }
// Copy constructor
file_descriptor_sink(const file_descriptor_sink& other);
// open overloads taking file descriptors
void open(handle_type fd, file_descriptor_flags);
#ifdef BOOST_IOSTREAMS_WINDOWS
void open(int fd, file_descriptor_flags);
#endif
#if defined(BOOST_IOSTREAMS_USE_DEPRECATED)
// open overloads taking file descriptors
void open(handle_type fd, bool close_on_exit = false);
#ifdef BOOST_IOSTREAMS_WINDOWS
void open(int fd, bool close_on_exit = false);
#endif
#endif
// open overload taking a std::string
void open( const std::string& path,
BOOST_IOS::openmode mode = BOOST_IOS::out );
// open overload taking C-style string
void open( const char* path,
BOOST_IOS::openmode mode = BOOST_IOS::out );
// open overload taking a Boost.Filesystem path
template<typename Path>
void open( const Path& path,
BOOST_IOS::openmode mode = BOOST_IOS::out )
{ open(detail::path(path), mode); }
private:
// open overload taking a detail::path
void open(const detail::path& path, BOOST_IOS::openmode);
};
} } // End namespaces iostreams, boost.
#include <boost/config/abi_suffix.hpp> // pops abi_suffix.hpp pragmas
#if defined(BOOST_MSVC)
# pragma warning(pop) // pops #pragma warning(disable:4251)
#endif
#endif // #ifndef BOOST_IOSTREAMS_FILE_DESCRIPTOR_HPP_INCLUDED
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