130 lines
2.4 KiB
Lua
130 lines
2.4 KiB
Lua
--[[
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LuCI - Filesystem tools
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Description:
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A module offering often needed filesystem manipulation functions
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FileId:
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$Id$
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License:
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Copyright 2008 Steven Barth <steven@midlink.org>
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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]]--
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module("luci.fs", package.seeall)
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require("posix")
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-- Access
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access = posix.access
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-- Glob
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glob = posix.glob
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-- Checks whether a file exists
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function isfile(filename)
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return posix.stat(filename, "type") == "regular"
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end
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-- Returns the content of file
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function readfile(filename)
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local fp, err = io.open(filename)
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if fp == nil then
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return nil, err
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end
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local data = fp:read("*a")
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fp:close()
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return data
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end
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-- Writes given data to a file
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function writefile(filename, data)
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local fp, err = io.open(filename, "w")
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if fp == nil then
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return nil, err
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end
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fp:write(data)
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fp:close()
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return true
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end
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-- Returns the file modification date/time of "path"
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function mtime(path)
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return posix.stat(path, "mtime")
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end
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-- basename wrapper
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basename = posix.basename
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-- dirname wrapper
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dirname = posix.dirname
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-- dir wrapper
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dir = posix.dir
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-- wrapper for posix.mkdir
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function mkdir(path, recursive)
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if recursive then
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local base = "."
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if path:sub(1,1) == "/" then
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base = ""
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path = path:gsub("^/+","")
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end
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for elem in path:gmatch("([^/]+)/*") do
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base = base .. "/" .. elem
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local stat = posix.stat( base )
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if not stat then
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local stat, errmsg, errno = posix.mkdir( base )
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if type(stat) ~= "number" or stat ~= 0 then
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return stat, errmsg, errno
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end
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else
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if stat.type ~= "directory" then
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return nil, base .. ": File exists", 17
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end
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end
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end
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return 0
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else
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return posix.mkdir( path )
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end
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end
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-- Alias for posix.rmdir
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rmdir = posix.rmdir
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-- Alias for posix.stat
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stat = posix.stat
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-- Alias for posix.chmod
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chmod = posix.chmod
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-- Alias for posix.link
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link = posix.link
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-- Alias for posix.unlink
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unlink = posix.unlink
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