Gecko [ touzafair.com ]

Name	Size	Permission
bin-target.js	329 B	-rw-r--r--
check-bin.js	2.07 KB	-rw-r--r--
check-bins.js	493 B	-rw-r--r--
fix-bin.js	1.3 KB	-rw-r--r--
get-node-modules.js	534 B	-rw-r--r--
get-paths.js	1.22 KB	-rw-r--r--
get-prefix.js	147 B	-rw-r--r--
index.js	1.33 KB	-rw-r--r--
is-windows.js	118 B	-rw-r--r--
link-bin.js	343 B	-rw-r--r--
link-bins.js	775 B	-rw-r--r--
link-gently.js	2.72 KB	-rw-r--r--
link-mans.js	1.56 KB	-rw-r--r--
man-target.js	232 B	-rw-r--r--
shim-bin.js	2.11 KB	-rw-r--r--

Code Editor : fix-bin.js

// make sure that bins are executable, and that they don't have
// windows line-endings on the hashbang line.
const fs = require('fs')
const { promisify } = require('util')

const execMode = 0o777 & (~process.umask())

const writeFileAtomic = require('write-file-atomic')
const open = promisify(fs.open)
const close = promisify(fs.close)
const read = promisify(fs.read)
const chmod = promisify(fs.chmod)
const readFile = promisify(fs.readFile)

const isWindowsHashBang = buf =>
  buf[0] === '#'.charCodeAt(0) &&
  buf[1] === '!'.charCodeAt(0) &&
  /^#![^\n]+\r\n/.test(buf.toString())

const isWindowsHashbangFile = file => {
  const FALSE = () => false
  return open(file, 'r').then(fd => {
    const buf = Buffer.alloc(2048)
    return read(fd, buf, 0, 2048, 0)
      .then(
        () => {
          const isWHB = isWindowsHashBang(buf)
          return close(fd).then(() => isWHB, () => isWHB)
        },
        // don't leak FD if read() fails
        () => close(fd).then(FALSE, FALSE)
      )
  }, FALSE)
}

const dos2Unix = file =>
  readFile(file, 'utf8').then(content =>
    writeFileAtomic(file, content.replace(/^(#![^\n]+)\r\n/, '$1\n')))

const fixBin = (file, mode = execMode) => chmod(file, mode)
  .then(() => isWindowsHashbangFile(file))
  .then(isWHB => isWHB ? dos2Unix(file) : null)

module.exports = fixBin

${this.title}

Code Editor : fix-bin.js