codekingpro/portable-devtools

1'use strict'
2
3// this code adapted from: https://blogs.msdn.microsoft.com/twistylittlepassagesallalike/2011/04/23/everyone-quotes-command-line-arguments-the-wrong-way/
4const cmd = (input, doubleEscape) => {
5  if (!input.length) {
6    return '""'
7  }
8
9  let result
10  if (!/[ \t\n\v"]/.test(input)) {
11    result = input
12  } else {
13    result = '"'
14    for (let i = 0; i <= input.length; ++i) {
15      let slashCount = 0
16      while (input[i] === '\\') {
17        ++i
18        ++slashCount
19      }
20
21      if (i === input.length) {
22        result += '\\'.repeat(slashCount * 2)
23        break
24      }
25
26      if (input[i] === '"') {
27        result += '\\'.repeat(slashCount * 2 + 1)
28        result += input[i]
29      } else {
30        result += '\\'.repeat(slashCount)
31        result += input[i]
32      }
33    }
34    result += '"'
35  }
36
37  // and finally, prefix shell meta chars with a ^
38  result = result.replace(/[ !%^&()<>|"]/g, '^$&')
39  if (doubleEscape) {
40    result = result.replace(/[ !%^&()<>|"]/g, '^$&')
41  }
42
43  return result
44}
45
46const sh = (input) => {
47  if (!input.length) {
48    return `''`
49  }
50
51  if (!/[\t\n\r "#$&'()*;<>?\\`|~]/.test(input)) {
52    return input
53  }
54
55  // replace single quotes with '\'' and wrap the whole result in a fresh set of quotes
56  const result = `'${input.replace(/'/g, `'\\''`)}'`
57    // if the input string already had single quotes around it, clean those up
58    .replace(/^(?:'')+(?!$)/, '')
59    .replace(/\\'''/g, `\\'`)
60
61  return result
62}
63
64module.exports = {
65  cmd,
66  sh,
67}
68