1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
|
// Copyright 2011 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// This file defines types for abstract file system access and
// provides an implementation accessing the file system of the
// underlying OS.
package main
import (
"fmt"
"io"
"io/ioutil"
"os"
)
// The FileSystem interface specifies the methods godoc is using
// to access the file system for which it serves documentation.
type FileSystem interface {
Open(path string) (io.ReadCloser, error)
Lstat(path string) (os.FileInfo, error)
Stat(path string) (os.FileInfo, error)
ReadDir(path string) ([]os.FileInfo, error)
}
// ReadFile reads the file named by path from fs and returns the contents.
func ReadFile(fs FileSystem, path string) ([]byte, error) {
rc, err := fs.Open(path)
if err != nil {
return nil, err
}
defer rc.Close()
return ioutil.ReadAll(rc)
}
// ----------------------------------------------------------------------------
// OS-specific FileSystem implementation
var OS FileSystem = osFS{}
// osFS is the OS-specific implementation of FileSystem
type osFS struct{}
func (osFS) Open(path string) (io.ReadCloser, error) {
f, err := os.Open(path)
if err != nil {
return nil, err
}
fi, err := f.Stat()
if err != nil {
return nil, err
}
if fi.IsDir() {
return nil, fmt.Errorf("Open: %s is a directory", path)
}
return f, nil
}
func (osFS) Lstat(path string) (os.FileInfo, error) {
return os.Lstat(path)
}
func (osFS) Stat(path string) (os.FileInfo, error) {
return os.Stat(path)
}
func (osFS) ReadDir(path string) ([]os.FileInfo, error) {
return ioutil.ReadDir(path) // is sorted
}
|
