local io = require "io"
local os = require "os"
local ltn12 = require "luci.ltn12"
-local posix = require "posix"
+local fs = require "nixio.fs"
+local nutil = require "nixio.util"
local type = type
-- @return Number containing the return code, 0 on sucess or nil on error
-- @return String containing the error description (if any)
-- @return Number containing the os specific errno (if any)
-access = posix.access
+access = fs.access
--- Evaluate given shell glob pattern and return a table containing all matching
-- file and directory entries.
-- @return Table containing file and directory entries or nil if no matches
-- @return String containing the error description (if no matches)
-- @return Number containing the os specific errno (if no matches)
-glob = posix.glob
+function glob(...)
+ local iter, code, msg = fs.glob(...)
+ if iter then
+ return nutil.consume(iter)
+ else
+ return nil, code, msg
+ end
+end
--- Checks wheather the given path exists and points to a regular file.
-- @param filename String containing the path of the file to test
-- @return Boolean indicating wheather given path points to regular file
function isfile(filename)
- return posix.stat(filename, "type") == "regular"
+ return fs.stat(filename, "type") == "reg"
end
--- Checks wheather the given path exists and points to a directory.
-- @param dirname String containing the path of the directory to test
-- @return Boolean indicating wheather given path points to directory
function isdirectory(dirname)
- return posix.stat(dirname, "type") == "directory"
+ return fs.stat(dirname, "type") == "dir"
end
--- Read the whole content of the given file into memory.
-- @param filename String containing the path of the file to read
-- @return String containing the file contents or nil on error
-- @return String containing the error message on error
-function readfile(filename)
- local fp, err = io.open(filename)
-
- if fp == nil then
- return nil, err
- end
-
- local data = fp:read("*a")
- fp:close()
- return data
-end
+readfile = fs.readfile
--- Write the contents of given string to given file.
-- @param filename String containing the path of the file to read
-- @param data String containing the data to write
-- @return Boolean containing true on success or nil on error
-- @return String containing the error message on error
-function writefile(filename, data)
- local fp, err = io.open(filename, "w")
-
- if fp == nil then
- return nil, err
- end
-
- fp:write(data)
- fp:close()
-
- return true
-end
+writefile = fs.writefile
--- Copies a file.
-- @param source Source file
-- @param dest Destination
-- @return Boolean containing true on success or nil on error
-function copy(source, dest)
- return ltn12.pump.all(
- ltn12.source.file(io.open(source)),
- ltn12.sink.file(io.open(dest, "w"))
- )
-end
+copy = fs.datacopy
--- Renames a file.
-- @param source Source file
-- @param dest Destination
-- @return Boolean containing true on success or nil on error
-function rename(source, dest)
- local stat, err, code = os.rename(source, dest)
- if code == 18 then
- stat, err, code = copy(source, dest)
- if stat then
- stat, err, code = unlink(source)
- end
- end
- return stat, err, code
-end
+rename = fs.move
--- Get the last modification time of given file path in Unix epoch format.
-- @param path String containing the path of the file or directory to read
-- @return String containing the error description (if any)
-- @return Number containing the os specific errno (if any)
function mtime(path)
- return posix.stat(path, "mtime")
+ return fs.stat(path, "mtime")
end
--- Set the last modification time of given file path in Unix epoch format.
-- @return 0 in case of success nil on error
-- @return String containing the error description (if any)
-- @return Number containing the os specific errno (if any)
-utime = posix.utime
+function utime(path, mtime, atime)
+ return fs.utimes(path, atime, mtime)
+end
--- Return the last element - usually the filename - from the given path with
-- the directory component stripped.
-- @param path String containing the path to strip
-- @return String containing the base name of given path
-- @see dirname
-basename = posix.basename
+basename = fs.basename
--- Return the directory component of the given path with the last element
-- stripped of.
-- @param path String containing the path to strip
-- @return String containing the directory component of given path
-- @see basename
-dirname = posix.dirname
+dirname = fs.dirname
--- Return a table containing all entries of the specified directory.
-- @class function
-- @return Table containing file and directory entries or nil on error
-- @return String containing the error description on error
-- @return Number containing the os specific errno on error
-dir = posix.dir
+function dir(...)
+ local iter, code, msg = fs.dir(...)
+ if iter then
+ local t = nutil.consume(iter)
+ t[#t+1] = "."
+ t[#t+1] = ".."
+ return t
+ else
+ return nil, code, msg
+ end
+end
--- Create a new directory, recursively on demand.
-- @param path String with the name or path of the directory to create
-- @return String containing the error description on error
-- @return Number containing the os specific errno on error
function mkdir(path, recursive)
- if recursive then
- local base = "."
-
- if path:sub(1,1) == "/" then
- base = ""
- path = path:gsub("^/+","")
- end
-
- for elem in path:gmatch("([^/]+)/*") do
- base = base .. "/" .. elem
-
- local stat = posix.stat( base )
-
- if not stat then
- local stat, errmsg, errno = posix.mkdir( base )
-
- if type(stat) ~= "number" or stat ~= 0 then
- return stat, errmsg, errno
- end
- else
- if stat.type ~= "directory" then
- return nil, base .. ": File exists", 17
- end
- end
- end
-
- return 0
- else
- return posix.mkdir( path )
- end
+ return recursive and fs.mkdirr(path) or fs.mkdir(path)
end
--- Remove the given empty directory.
-- @return Number with the return code, 0 on sucess or nil on error
-- @return String containing the error description on error
-- @return Number containing the os specific errno on error
-rmdir = posix.rmdir
-
+rmdir = fs.rmdir
+
+local stat_tr = {
+ reg = "regular",
+ dir = "directory",
+ lnk = "link",
+ chr = "character device",
+ blk = "block device",
+ fifo = "fifo",
+ sock = "socket"
+}
--- Get information about given file or directory.
-- @class function
-- @name stat
-- @return Table containing file or directory properties or nil on error
-- @return String containing the error description on error
-- @return Number containing the os specific errno on error
-stat = posix.stat
+function stat(path, key)
+ local data, code, msg = fs.stat(path)
+ if data then
+ data.mode = data.modestr
+ data.type = stat_tr[data.type] or "?"
+ end
+ return key and data and data[key] or data, code, msg
+end
--- Set permissions on given file or directory.
-- @class function
-- @return Number with the return code, 0 on sucess or nil on error
-- @return String containing the error description on error
-- @return Number containing the os specific errno on error
-chmod = posix.chmod
+chmod = fs.chmod
--- Create a hard- or symlink from given file (or directory) to specified target
-- file (or directory) path.
-- @return Number with the return code, 0 on sucess or nil on error
-- @return String containing the error description on error
-- @return Number containing the os specific errno on error
-link = posix.link
+function link(src, dest, sym)
+ return sym and fs.symlink(src, dest) or fs.link(src, dest)
+end
--- Remove the given file.
-- @class function
-- @return Number with the return code, 0 on sucess or nil on error
-- @return String containing the error description on error
-- @return Number containing the os specific errno on error
-unlink = posix.unlink
+unlink = fs.unlink
--- Retrieve target of given symlink.
-- @class function
-- @return String containing the link target or nil on error
-- @return String containing the error description on error
-- @return Number containing the os specific errno on error
-readlink = posix.readlink
+readlink = fs.readlink
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