/usr/include/boost/beast/core
Edit: /usr/include/boost/beast/core/file_posix.hpp (4222B)
//
// Copyright (c) 2015-2019 Vinnie Falco (vinnie dot falco at gmail dot com)
//
// 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)
//
// Official repository: https://github.com/boostorg/beast
//
#ifndef BOOST_BEAST_CORE_FILE_POSIX_HPP
#define BOOST_BEAST_CORE_FILE_POSIX_HPP
#include
#if ! defined(BOOST_BEAST_NO_POSIX_FILE)
# if ! defined(__APPLE__) && ! defined(__linux__)
# define BOOST_BEAST_NO_POSIX_FILE
# endif
#endif
#if ! defined(BOOST_BEAST_USE_POSIX_FILE)
# if ! defined(BOOST_BEAST_NO_POSIX_FILE)
# define BOOST_BEAST_USE_POSIX_FILE 1
# else
# define BOOST_BEAST_USE_POSIX_FILE 0
# endif
#endif
#if BOOST_BEAST_USE_POSIX_FILE
#include
#include
#include
namespace boost {
namespace beast {
/** An implementation of File for POSIX systems.
This class implements a File using POSIX interfaces.
*/
class file_posix
{
int fd_ = -1;
BOOST_BEAST_DECL
static
int
native_close(int& fd);
public:
/** The type of the underlying file handle.
This is platform-specific.
*/
using native_handle_type = int;
/** Destructor
If the file is open it is first closed.
*/
BOOST_BEAST_DECL
~file_posix();
/** Constructor
There is no open file initially.
*/
file_posix() = default;
/** Constructor
The moved-from object behaves as if default constructed.
*/
BOOST_BEAST_DECL
file_posix(file_posix&& other);
/** Assignment
The moved-from object behaves as if default constructed.
*/
BOOST_BEAST_DECL
file_posix& operator=(file_posix&& other);
/// Returns the native handle associated with the file.
native_handle_type
native_handle() const
{
return fd_;
}
/** Set the native handle associated with the file.
If the file is open it is first closed.
@param fd The native file handle to assign.
*/
BOOST_BEAST_DECL
void
native_handle(native_handle_type fd);
/// Returns `true` if the file is open
bool
is_open() const
{
return fd_ != -1;
}
/** Close the file if open
@param ec Set to the error, if any occurred.
*/
BOOST_BEAST_DECL
void
close(error_code& ec);
/** Open a file at the given path with the specified mode
@param path The utf-8 encoded path to the file
@param mode The file mode to use
@param ec Set to the error, if any occurred
*/
BOOST_BEAST_DECL
void
open(char const* path, file_mode mode, error_code& ec);
/** Return the size of the open file
@param ec Set to the error, if any occurred
@return The size in bytes
*/
BOOST_BEAST_DECL
std::uint64_t
size(error_code& ec) const;
/** Return the current position in the open file
@param ec Set to the error, if any occurred
@return The offset in bytes from the beginning of the file
*/
BOOST_BEAST_DECL
std::uint64_t
pos(error_code& ec) const;
/** Adjust the current position in the open file
@param offset The offset in bytes from the beginning of the file
@param ec Set to the error, if any occurred
*/
BOOST_BEAST_DECL
void
seek(std::uint64_t offset, error_code& ec);
/** Read from the open file
@param buffer The buffer for storing the result of the read
@param n The number of bytes to read
@param ec Set to the error, if any occurred
*/
BOOST_BEAST_DECL
std::size_t
read(void* buffer, std::size_t n, error_code& ec) const;
/** Write to the open file
@param buffer The buffer holding the data to write
@param n The number of bytes to write
@param ec Set to the error, if any occurred
*/
BOOST_BEAST_DECL
std::size_t
write(void const* buffer, std::size_t n, error_code& ec);
};
} // beast
} // boost
#ifdef BOOST_BEAST_HEADER_ONLY
#include
#endif
#endif
#endif