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
|
var _ = require('lodash');
var path = require('path');
var error = require('./error');
// Normalize a filename
function normalizePath(filename) {
return path.normalize(filename);
}
// Return true if file path is inside a folder
function isInRoot(root, filename) {
filename = path.normalize(filename);
return (filename.substr(0, root.length) === root);
}
// Resolve paths in a specific folder
// Throw error if file is outside this folder
function resolveInRoot(root) {
var input, result;
input = _.chain(arguments)
.toArray()
.slice(1)
.reduce(function(current, p) {
// Handle path relative to book root ("/README.md")
if (p[0] == '/' || p[0] == '\\') return p.slice(1);
return current? path.join(current, p) : path.normalize(p);
}, '')
.value();
result = path.resolve(root, input);
if (!isInRoot(root, result)) {
throw new error.FileOutOfScopeError({
filename: result,
root: root
});
}
return result;
}
// Chnage extension
function setExtension(filename, ext) {
return path.join(
path.dirname(filename),
path.basename(filename, path.extname(filename)) + ext
);
}
module.exports = {
isInRoot: isInRoot,
resolveInRoot: resolveInRoot,
normalize: normalizePath,
setExtension: setExtension
};
|
