mirror of
https://github.com/matrix-construct/construct
synced 2024-10-30 02:18:58 +01:00
73 lines
2.1 KiB
C++
73 lines
2.1 KiB
C++
// Matrix Construct
|
|
//
|
|
// Copyright (C) Matrix Construct Developers, Authors & Contributors
|
|
// Copyright (C) 2016-2018 Jason Volk <jason@zemos.net>
|
|
//
|
|
// Permission to use, copy, modify, and/or distribute this software for any
|
|
// purpose with or without fee is hereby granted, provided that the above
|
|
// copyright notice and this permission notice is present in all copies. The
|
|
// full license for this software is available in the LICENSE file.
|
|
|
|
#pragma once
|
|
#define HAVE_IRCD_FS_WRITE_H
|
|
|
|
namespace ircd::fs
|
|
{
|
|
struct write_opts extern const write_opts_default;
|
|
|
|
// Yields ircd::ctx for write from buffer; returns view of written portion
|
|
const_buffer write(const string_view &path, const const_buffer &, const write_opts & = write_opts_default);
|
|
|
|
// Yields ircd::ctx to overwrite (trunc) file from buffer; returns view of written portion
|
|
const_buffer overwrite(const string_view &path, const const_buffer &, const write_opts & = write_opts_default);
|
|
|
|
// Yields ircd::ctx to append to file from buffer; returns view of written portion
|
|
const_buffer append(const string_view &path, const const_buffer &, const write_opts & = write_opts_default);
|
|
}
|
|
|
|
/// Options for a write operation
|
|
struct ircd::fs::write_opts
|
|
{
|
|
write_opts() = default;
|
|
write_opts(const off_t &);
|
|
|
|
/// Overwrite (trunc) the file
|
|
bool overwrite {false};
|
|
|
|
/// Append to the file (offset is ignored)
|
|
bool append {false};
|
|
|
|
/// Create the file if necessary (default)
|
|
bool create {true};
|
|
|
|
/// Offset in the file to start the write from.
|
|
off_t offset {0};
|
|
|
|
/// Request priority (this option may be improved, avoid for now)
|
|
int16_t priority {0};
|
|
};
|
|
|
|
inline
|
|
ircd::fs::write_opts::write_opts(const off_t &offset)
|
|
:offset{offset}
|
|
{}
|
|
|
|
inline ircd::const_buffer
|
|
ircd::fs::overwrite(const string_view &path,
|
|
const const_buffer &buf,
|
|
const write_opts &opts_)
|
|
{
|
|
auto opts(opts_);
|
|
opts.overwrite = true;
|
|
return write(path, buf, opts);
|
|
}
|
|
|
|
inline ircd::const_buffer
|
|
ircd::fs::append(const string_view &path,
|
|
const const_buffer &buf,
|
|
const write_opts &opts_)
|
|
{
|
|
auto opts(opts_);
|
|
opts.append = true;
|
|
return write(path, buf, opts);
|
|
}
|