escape.js

'use strict'

// eslint-disable-next-line max-len
// this code adapted from: https://blogs.msdn.microsoft.com/twistylittlepassagesallalike/2011/04/23/everyone-quotes-command-line-arguments-the-wrong-way/
const cmd = (input, doubleEscape) => {
  if (!input.length) {
    return '""'
  }

let result
  if (!/[ \t\n\v"]/.test(input)) {
    result = input
  } else {
    result = '"'
    for (let i = 0; i <= input.length; ++i) {
      let slashCount = 0
      while (input[i] === '\\') {
        ++i
        ++slashCount
      }

if (i === input.length) {
        result += '\\'.repeat(slashCount * 2)
        break
      }

if (input[i] === '"') {
        result += '\\'.repeat(slashCount * 2 + 1)
        result += input[i]
      } else {
        result += '\\'.repeat(slashCount)
        result += input[i]
      }
    }
    result += '"'
  }

// and finally, prefix shell meta chars with a ^
  result = result.replace(/[ !%^&()<>|"]/g, '^$&')
  if (doubleEscape) {
    result = result.replace(/[ !%^&()<>|"]/g, '^$&')
  }

return result
}

const sh = (input) => {
  if (!input.length) {
    return `''`
  }

if (!/[\t\n\r "#$&'()*;<>?\\`|~]/.test(input)) {
    return input
  }

// replace single quotes with '\'' and wrap the whole result in a fresh set of quotes
  const result = `'${input.replace(/'/g, `'\\''`)}'`
    // if the input string already had single quotes around it, clean those up
    .replace(/^(?:'')+(?!$)/, '')
    .replace(/\\'''/g, `\\'`)

return result
}

module.exports = {
  cmd,
  sh,
}

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X	escape.js	1538
X	is-server-package.js	314
X	is-windows.js	113
X	make-spawn-args.js	2013
	node-gyp-bin	42
X	package-envs.js	699
X	run-script-pkg.js	2755
X	run-script.js	516
X	set-path.js	1501
X	signal-manager.js	820
X	validate-options.js	1212