-
Notifications
You must be signed in to change notification settings - Fork 277
/
file.go
128 lines (116 loc) · 2.88 KB
/
file.go
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
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
// Licensed to LinDB under one or more contributor
// license agreements. See the NOTICE file distributed with
// this work for additional information regarding copyright
// ownership. LinDB licenses this file to you 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.
package fileutil
import (
"io/fs"
"os"
"path/filepath"
)
var (
mkdirAllFunc = os.MkdirAll
removeAllFunc = os.RemoveAll
removeFunc = os.Remove
)
// MkDirIfNotExist creates given dir if it's not exist.
func MkDirIfNotExist(path string) error {
if !Exist(path) {
if e := mkdirAllFunc(path, os.ModePerm); e != nil {
return e
}
}
return nil
}
// RemoveDir deletes dir include children if exist.
func RemoveDir(path string) error {
if Exist(path) {
if e := removeAllFunc(path); e != nil {
return e
}
}
return nil
}
// RemoveFile removes the file if exist.
func RemoveFile(file string) error {
if Exist(file) {
if e := removeFunc(file); e != nil {
return e
}
}
return nil
}
// MkDir creates dir.
func MkDir(path string) error {
if e := mkdirAllFunc(path, os.ModePerm); e != nil {
return e
}
return nil
}
// ListDir reads the directory named by dirname and returns a list of filename.
func ListDir(path string) ([]string, error) {
var result []string
if err := readDir(path, func(f fs.DirEntry) {
result = append(result, f.Name())
}); err != nil {
return nil, err
}
return result, nil
}
// GetDirectoryList reads the directory named by dirname and returns a list of directory.
func GetDirectoryList(path string) ([]string, error) {
var result []string
if err := readDir(path, func(f fs.DirEntry) {
if f.IsDir() {
result = append(result, f.Name())
}
}); err != nil {
return nil, err
}
return result, nil
}
// Exist checks file or dir if exist.
func Exist(file string) bool {
if _, err := os.Stat(file); err != nil && os.IsNotExist(err) {
return false
}
return true
}
// GetExistPath gets exist path based on given path.
func GetExistPath(path string) string {
if Exist(path) {
return path
}
dir, _ := filepath.Split(path)
length := len(dir)
if length == 0 {
return dir
}
if length > 0 && os.IsPathSeparator(dir[length-1]) {
dir = dir[:length-1]
}
return GetExistPath(dir)
}
// readDir lists all files/directories.
func readDir(path string, fn func(f fs.DirEntry)) error {
files, err := os.ReadDir(path)
if err != nil {
return err
}
for _, file := range files {
fn(file)
}
return nil
}