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
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
|
var common = require('./common');
var fs = require('fs');
common.register('rm', _rm, {
cmdOptions: {
'f': 'force',
'r': 'recursive',
'R': 'recursive',
},
});
// Recursively removes 'dir'
// Adapted from https://github.com/ryanmcgrath/wrench-js
//
// Copyright (c) 2010 Ryan McGrath
// Copyright (c) 2012 Artur Adib
//
// Licensed under the MIT License
// http://www.opensource.org/licenses/mit-license.php
function rmdirSyncRecursive(dir, force, fromSymlink) {
var files;
files = fs.readdirSync(dir);
// Loop through and delete everything in the sub-tree after checking it
for (var i = 0; i < files.length; i++) {
var file = dir + '/' + files[i];
var currFile = fs.lstatSync(file);
if (currFile.isDirectory()) { // Recursive function back to the beginning
rmdirSyncRecursive(file, force);
} else { // Assume it's a file - perhaps a try/catch belongs here?
if (force || isWriteable(file)) {
try {
common.unlinkSync(file);
} catch (e) {
/* istanbul ignore next */
common.error('could not remove file (code ' + e.code + '): ' + file, {
continue: true,
});
}
}
}
}
// if was directory was referenced through a symbolic link,
// the contents should be removed, but not the directory itself
if (fromSymlink) return;
// Now that we know everything in the sub-tree has been deleted, we can delete the main directory.
// Huzzah for the shopkeep.
var result;
try {
// Retry on windows, sometimes it takes a little time before all the files in the directory are gone
var start = Date.now();
// TODO: replace this with a finite loop
for (;;) {
try {
result = fs.rmdirSync(dir);
if (fs.existsSync(dir)) throw { code: 'EAGAIN' };
break;
} catch (er) {
/* istanbul ignore next */
// In addition to error codes, also check if the directory still exists and loop again if true
if (process.platform === 'win32' && (er.code === 'ENOTEMPTY' || er.code === 'EBUSY' || er.code === 'EPERM' || er.code === 'EAGAIN')) {
if (Date.now() - start > 1000) throw er;
} else if (er.code === 'ENOENT') {
// Directory did not exist, deletion was successful
break;
} else {
throw er;
}
}
}
} catch (e) {
common.error('could not remove directory (code ' + e.code + '): ' + dir, { continue: true });
}
return result;
} // rmdirSyncRecursive
// Hack to determine if file has write permissions for current user
// Avoids having to check user, group, etc, but it's probably slow
function isWriteable(file) {
var writePermission = true;
try {
var __fd = fs.openSync(file, 'a');
fs.closeSync(__fd);
} catch (e) {
writePermission = false;
}
return writePermission;
}
function handleFile(file, options) {
if (options.force || isWriteable(file)) {
// -f was passed, or file is writable, so it can be removed
common.unlinkSync(file);
} else {
common.error('permission denied: ' + file, { continue: true });
}
}
function handleDirectory(file, options) {
if (options.recursive) {
// -r was passed, so directory can be removed
rmdirSyncRecursive(file, options.force);
} else {
common.error('path is a directory', { continue: true });
}
}
function handleSymbolicLink(file, options) {
var stats;
try {
stats = fs.statSync(file);
} catch (e) {
// symlink is broken, so remove the symlink itself
common.unlinkSync(file);
return;
}
if (stats.isFile()) {
common.unlinkSync(file);
} else if (stats.isDirectory()) {
if (file[file.length - 1] === '/') {
// trailing separator, so remove the contents, not the link
if (options.recursive) {
// -r was passed, so directory can be removed
var fromSymlink = true;
rmdirSyncRecursive(file, options.force, fromSymlink);
} else {
common.error('path is a directory', { continue: true });
}
} else {
// no trailing separator, so remove the link
common.unlinkSync(file);
}
}
}
function handleFIFO(file) {
common.unlinkSync(file);
}
//@
//@ ### rm([options,] file [, file ...])
//@ ### rm([options,] file_array)
//@ Available options:
//@
//@ + `-f`: force
//@ + `-r, -R`: recursive
//@
//@ Examples:
//@
//@ ```javascript
//@ rm('-rf', '/tmp/*');
//@ rm('some_file.txt', 'another_file.txt');
//@ rm(['some_file.txt', 'another_file.txt']); // same as above
//@ ```
//@
//@ Removes files.
function _rm(options, files) {
if (!files) common.error('no paths given');
// Convert to array
files = [].slice.call(arguments, 1);
files.forEach(function (file) {
var lstats;
try {
var filepath = (file[file.length - 1] === '/')
? file.slice(0, -1) // remove the '/' so lstatSync can detect symlinks
: file;
lstats = fs.lstatSync(filepath); // test for existence
} catch (e) {
// Path does not exist, no force flag given
if (!options.force) {
common.error('no such file or directory: ' + file, { continue: true });
}
return; // skip file
}
// If here, path exists
if (lstats.isFile()) {
handleFile(file, options);
} else if (lstats.isDirectory()) {
handleDirectory(file, options);
} else if (lstats.isSymbolicLink()) {
handleSymbolicLink(file, options);
} else if (lstats.isFIFO()) {
handleFIFO(file);
}
}); // forEach(file)
return '';
} // rm
module.exports = _rm;
|
