* Major repository revision

[project/luci.git] / core / src / ffluci / fs.lua

diff --git a/core/src/ffluci/fs.lua b/core/src/ffluci/fs.lua
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+--[[
+FFLuCI - Filesystem tools
+
+Description:
+A module offering often needed filesystem manipulation functions
+
+FileId:
+$Id$
+
+License:
+Copyright 2008 Steven Barth <steven@midlink.org>
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at 
+
+       http://www.apache.org/licenses/LICENSE-2.0 
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+
+]]--
+
+module("ffluci.fs", package.seeall)
+
+require("posix")
+
+-- Checks whether a file exists
+function isfile(filename)
+       local fp = io.open(path, "r")
+       if file then file:close() end
+       return file ~= nil
+end    
+
+-- Returns the content of file
+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
+
+-- Returns the content of file as array of lines
+function readfilel(filename)
+       local fp, err = io.open(filename)
+       local line = ""
+       local data = {}
+               
+       if fp == nil then
+               return nil, err
+       end
+       
+       while true do
+               line = fp:read()
+               if (line == nil) then break end
+               table.insert(data, line)
+       end     
+       
+       fp:close()
+       return data     
+end
+
+-- Writes given data to a file
+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
+
+-- Returns the file modification date/time of "path"
+function mtime(path)
+       return posix.stat(path, "mtime")
+end
+
+-- basename wrapper
+basename = posix.basename
+
+-- dirname wrapper
+dirname = posix.dirname
+
+-- dir wrapper
+function dir(path)
+       local dir = {}
+       for node in posix.files(path) do
+               table.insert(dir, 1, node)
+       end 
+       return dir
+end
+
+-- Alias for lfs.mkdir
+mkdir = posix.mkdir
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