mirror of
https://github.com/matrix-construct/construct
synced 2024-11-30 02:32:43 +01:00
109 lines
3.7 KiB
C++
109 lines
3.7 KiB
C++
// Matrix Construct
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//
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// Copyright (C) Matrix Construct Developers, Authors & Contributors
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// Copyright (C) 2016-2018 Jason Volk <jason@zemos.net>
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//
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// Permission to use, copy, modify, and/or distribute this software for any
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// purpose with or without fee is hereby granted, provided that the above
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// copyright notice and this permission notice is present in all copies. The
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// full license for this software is available in the LICENSE file.
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#pragma once
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#define HAVE_IRCD_FS_PATH_H
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// Forward declarations for boost because it is not included here.
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namespace boost::filesystem
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{
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struct path;
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}
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namespace ircd::fs
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{
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enum class base :uint;
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struct basepath;
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using path_view = vector_view<const string_view>;
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using path_strings = vector_view<const std::string>;
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extern const size_t NAME_MAX_LEN;
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extern const size_t PATH_MAX_LEN;
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// convenience tls buffers of appropriate size.
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extern const mutable_buffer path_scratch;
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extern const mutable_buffer name_scratch;
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filesystem::path _path(std::string);
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filesystem::path _path(const string_view &);
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filesystem::path _path(const path_view &);
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filesystem::path _path(const path_strings &);
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string_view path(const base &) noexcept;
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string_view path(const mutable_buffer &, const base &, const string_view &);
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string_view path(const mutable_buffer &, const path_view &);
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string_view path(const mutable_buffer &, const path_strings &);
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string_view path(const mutable_buffer &, const filesystem::path &);
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template<class... A> std::string path_string(A&&...);
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bool is_relative(const string_view &path);
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bool is_absolute(const string_view &path);
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string_view extension(const mutable_buffer &, const string_view &path, const string_view &replace);
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string_view extension(const mutable_buffer &, const string_view &path);
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string_view relative(const mutable_buffer &, const string_view &root, const string_view &path);
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string_view filename(const mutable_buffer &, const string_view &path);
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string_view parent(const mutable_buffer &, const string_view &path);
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long pathconf(const string_view &path, const int &arg);
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size_t name_max_len(const string_view &path);
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size_t path_max_len(const string_view &path);
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string_view cwd(const mutable_buffer &buf);
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std::string cwd();
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}
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/// A compile-time installation base-path. We have several of these in an
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/// internal array accessible with get(enum base) or make_path(enum base).
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/// These can still be modified at runtime by setting a new platform-dependent
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/// string with set(enum base); do so with care.
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struct ircd::fs::basepath
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{
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string_view name;
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string_view path;
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static const basepath &get(const base &) noexcept;
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static string_view set(const base &, const string_view &); // (returns old value)
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};
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/// Index of default paths. Must be aligned with the internal array in fs.cc.
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/// Note that even though the PREFIX is accessible here, custom installations
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/// may use entirely different paths for other components; most installations
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/// use the package-target name as a path component.
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enum class ircd::fs::base
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:uint
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{
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PREFIX, ///< Installation prefix (from ./configure --prefix)
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BIN, ///< Binary directory (e.g. $prefix/bin)
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CONF, ///< Configuration directory (e.g. $prefix/etc)
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DATA, ///< Read-only data directory (e.g. $prefix/share)
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DB, ///< Database directory (e.g. $prefix/var/db)
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LOG, ///< Logfile directory (e.g. $prefix/var/log)
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LIB, ///< Shared library directory (e.g. $prefix/lib)
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MODULES, ///< Modules directory (e.g. $prefix/lib/modules)
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_NUM_
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};
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template<class... A>
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std::string
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ircd::fs::path_string(A&&... a)
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{
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const size_t &size
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{
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PATH_MAX_LEN | SHRINK_TO_FIT
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};
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return util::string(size, [&a...]
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(const mutable_buffer &buf)
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{
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return path(buf, std::forward<A>(a)...);
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});
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}
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