2 LuCI - Filesystem tools
5 A module offering often needed filesystem manipulation functions
11 Copyright 2008 Steven Barth <steven@midlink.org>
13 Licensed under the Apache License, Version 2.0 (the "License");
14 you may not use this file except in compliance with the License.
15 You may obtain a copy of the License at
17 http://www.apache.org/licenses/LICENSE-2.0
19 Unless required by applicable law or agreed to in writing, software
20 distributed under the License is distributed on an "AS IS" BASIS,
21 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
22 See the License for the specific language governing permissions and
23 limitations under the License.
27 module("luci.fs", package.seeall)
34 -- Checks whether a file exists
35 function isfile(filename)
36 local fp = io.open(filename, "r")
37 if fp then fp:close() end
41 -- Returns the content of file
42 function readfile(filename)
43 local fp, err = io.open(filename)
49 local data = fp:read("*a")
54 -- Writes given data to a file
55 function writefile(filename, data)
56 local fp, err = io.open(filename, "w")
68 -- Returns the file modification date/time of "path"
70 return posix.stat(path, "mtime")
74 basename = posix.basename
77 dirname = posix.dirname
82 -- wrapper for posix.mkdir
83 function mkdir(path, recursive)
87 if path:sub(1,1) == "/" then
89 path = path:gsub("^/+","")
92 for elem in path:gmatch("([^/]+)/*") do
93 base = base .. "/" .. elem
95 local stat = posix.stat( base )
98 local stat, errmsg, errno = posix.mkdir( base )
100 if type(stat) ~= "number" or stat ~= 0 then
101 return stat, errmsg, errno
104 if stat.type ~= "directory" then
105 return nil, base .. ": File exists", 17
112 return posix.mkdir( path )
116 -- Alias for posix.rmdir
119 -- Alias for posix.stat
122 -- Alias for posix.chmod
125 -- Alias for posix.link
128 -- Alias for posix.unlink
129 unlink = posix.unlink