1 // Copyright © 2014 Steve Francia <spf@spf13.com>.
2 // Copyright 2013 tsuru authors. All rights reserved.
3 //
4 // Licensed under the Apache License, Version 2.0 (the "License");
5 // you may not use this file except in compliance with the License.
6 // You may obtain a copy of the License at
7 // http://www.apache.org/licenses/LICENSE-2.0
8 //
9 // Unless required by applicable law or agreed to in writing, software
10 // distributed under the License is distributed on an "AS IS" BASIS,
11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 // See the License for the specific language governing permissions and
13 // limitations under the License.
14
15 package afero
16
17 import (
18 "os"
19 "time"
20 )
21
22 var _ Lstater = (*OsFs)(nil)
23
24 // OsFs is a Fs implementation that uses functions provided by the os package.
25 //
26 // For details in any method, check the documentation of the os package
27 // (http://golang.org/pkg/os/).
28 type OsFs struct{}
29
30 func NewOsFs() Fs {
31 return &OsFs{}
32 }
33
34 func (OsFs) Name() string { return "OsFs" }
35
36 func (OsFs) Create(name string) (File, error) {
37 f, e := os.Create(name)
38 if f == nil {
39 // while this looks strange, we need to return a bare nil (of type nil) not
40 // a nil value of type *os.File or nil won't be nil
41 return nil, e
42 }
43 return f, e
44 }
45
46 func (OsFs) Mkdir(name string, perm os.FileMode) error {
47 return os.Mkdir(name, perm)
48 }
49
50 func (OsFs) MkdirAll(path string, perm os.FileMode) error {
51 return os.MkdirAll(path, perm)
52 }
53
54 func (OsFs) Open(name string) (File, error) {
55 f, e := os.Open(name)
56 if f == nil {
57 // while this looks strange, we need to return a bare nil (of type nil) not
58 // a nil value of type *os.File or nil won't be nil
59 return nil, e
60 }
61 return f, e
62 }
63
64 func (OsFs) OpenFile(name string, flag int, perm os.FileMode) (File, error) {
65 f, e := os.OpenFile(name, flag, perm)
66 if f == nil {
67 // while this looks strange, we need to return a bare nil (of type nil) not
68 // a nil value of type *os.File or nil won't be nil
69 return nil, e
70 }
71 return f, e
72 }
73
74 func (OsFs) Remove(name string) error {
75 return os.Remove(name)
76 }
77
78 func (OsFs) RemoveAll(path string) error {
79 return os.RemoveAll(path)
80 }
81
82 func (OsFs) Rename(oldname, newname string) error {
83 return os.Rename(oldname, newname)
84 }
85
86 func (OsFs) Stat(name string) (os.FileInfo, error) {
87 return os.Stat(name)
88 }
89
90 func (OsFs) Chmod(name string, mode os.FileMode) error {
91 return os.Chmod(name, mode)
92 }
93
94 func (OsFs) Chown(name string, uid, gid int) error {
95 return os.Chown(name, uid, gid)
96 }
97
98 func (OsFs) Chtimes(name string, atime time.Time, mtime time.Time) error {
99 return os.Chtimes(name, atime, mtime)
100 }
101
102 func (OsFs) LstatIfPossible(name string) (os.FileInfo, bool, error) {
103 fi, err := os.Lstat(name)
104 return fi, true, err
105 }
106
107 func (OsFs) SymlinkIfPossible(oldname, newname string) error {
108 return os.Symlink(oldname, newname)
109 }
110
111 func (OsFs) ReadlinkIfPossible(name string) (string, error) {
112 return os.Readlink(name)
113 }
114