Commit from LuCI Translation Portal by user keksdosenmann. 4 of 251 messages translat...
[project/luci.git] / libs / nixio / lua / nixio / fs.lua
1 --[[
2 nixio - Linux I/O library for lua
3
4 Copyright 2009 Steven Barth <steven@midlink.org>
5
6 Licensed under the Apache License, Version 2.0 (the "License");
7 you may not use this file except in compliance with the License.
8 You may obtain a copy of the License at
9
10 http://www.apache.org/licenses/LICENSE-2.0
11
12 $Id$
13 ]]--
14
15 local table = require "table"
16 local nixio = require "nixio"
17 local type, ipairs, setmetatable = type, ipairs, setmetatable
18 require "nixio.util"
19
20
21 module ("nixio.fs", function(m) setmetatable(m, {__index = nixio.fs}) end)
22
23
24 function readfile(path, limit)
25 local fd, code, msg = nixio.open(path, "r")
26 local data
27 if not fd then
28 return nil, code, msg
29 end
30
31 data, code, msg = fd:readall(limit)
32
33 fd:close()
34 return data, code, msg
35 end
36
37
38 function writefile(path, data)
39 local fd, code, msg, stat = nixio.open(path, "w")
40 if not fd then
41 return nil, code, msg
42 end
43
44 stat, code, msg = fd:writeall(data)
45
46 fd:close()
47 return stat, code, msg
48 end
49
50 function datacopy(src, dest, size)
51 local fdin, code, msg = nixio.open(src, "r")
52 if not fdin then
53 return nil, code, msg
54 end
55
56 local fdout, code, msg = nixio.open(dest, "w")
57 if not fdout then
58 return nil, code, msg
59 end
60
61 local stat, code, msg, sent = fdin:copy(fdout, size)
62 fdin:close()
63 fdout:close()
64
65 return stat, code, msg, sent
66 end
67
68 function copy(src, dest)
69 local stat, code, msg, res = nixio.lstat(src)
70 if not stat then
71 return nil, code, msg
72 end
73
74 if stat.type == "dir" then
75 if nixio.stat(dest, type) ~= "dir" then
76 res, code, msg = nixio.mkdir(dest)
77 else
78 stat = true
79 end
80 elseif stat.type == "lnk" then
81 res, code, msg = nixio.symlink(nixio.readlink(src), dest)
82 else
83 res, code, msg = datacopy(src, dest)
84 end
85
86 if not res then
87 return nil, code, msg
88 end
89
90 nixio.utimes(dest, stat.atime, stat.mtime)
91
92 if nixio.lchown then
93 nixio.lchown(dest, stat.uid, stat.gid)
94 end
95
96 if stat.type ~= "lnk" then
97 nixio.chmod(dest, stat.modedec)
98 end
99
100 return true
101 end
102
103 function move(src, dest)
104 local stat, code, msg = nixio.rename(src, dest)
105 if not stat and code == nixio.const.EXDEV then
106 stat, code, msg = nixio.copy(src, dest)
107 if stat then
108 stat, code, msg = nixio.unlink(src)
109 end
110 end
111 return stat, code, msg
112 end
113
114 function mkdirr(dest, mode)
115 if nixio.stat(dest, "type") == "dir" then
116 return true
117 else
118 local stat, code, msg = nixio.mkdir(dest, mode)
119 if not stat and code == nixio.const.ENOENT then
120 stat, code, msg = mkdirr(nixio.dirname(dest), mode)
121 if stat then
122 stat, code, msg = nixio.mkdir(dest, mode)
123 end
124 end
125 return stat, code, msg
126 end
127 end
128
129 local function _recurse(cb, src, dest)
130 local type = nixio.lstat(src, "type")
131 if type ~= "dir" then
132 return cb(src, dest)
133 else
134 local stat, se, code, msg, s, c, m = true, nixio.const.sep
135 if dest then
136 s, c, m = cb(src, dest)
137 stat, code, msg = stat and s, c or code, m or msg
138 end
139
140 for e in nixio.dir(src) do
141 if dest then
142 s, c, m = _recurse(cb, src .. se .. e, dest .. se .. e)
143 else
144 s, c, m = _recurse(cb, src .. se .. e)
145 end
146 stat, code, msg = stat and s, c or code, m or msg
147 end
148
149 if not dest then -- Postfix
150 s, c, m = cb(src)
151 stat, code, msg = stat and s, c or code, m or msg
152 end
153
154 return stat, code, msg
155 end
156 end
157
158 function copyr(src, dest)
159 return _recurse(copy, src, dest)
160 end
161
162 function mover(src, dest)
163 local stat, code, msg = nixio.rename(src, dest)
164 if not stat and code == nixio.const.EXDEV then
165 stat, code, msg = _recurse(copy, src, dest)
166 if stat then
167 stat, code, msg = _recurse(nixio.remove, src)
168 end
169 end
170 return stat, code, msg
171 end
172
173 function remover(src)
174 return _recurse(nixio.remove, src)
175 end