Function parse

packages/pg-connection-string/index.js:8–161

(str, options = {})

//parses a connection string
function parse(str, options = {}) {
  //unix socket
  if (str.charAt(0) === '/') {
    const config = str.split(' ')
    return { host: config[0], database: config[1] }
  }

  // Check for empty host in URL

  const config = Object.create(null)
  let result
  let dummyHost = false
  if (/ |%[^a-f0-9]|%[a-f0-9][^a-f0-9]/i.test(str)) {
    // Ensure spaces are encoded as %20
    str = encodeURI(str).replace(/%25(\d\d)/g, '%$1')
  }

  try {
    try {
      result = new URL(str, 'postgres://base')
    } catch (e) {
      // The URL is invalid so try again with a dummy host
      result = new URL(str.replace('@/', '@___DUMMY___/'), 'postgres://base')
      dummyHost = true
    }
  } catch (err) {
    // Remove the input from the error message to avoid leaking sensitive information
    err.input && (err.input = '*****REDACTED*****')
    throw err
  }

  // We'd like to use Object.fromEntries() here but Node.js 10 does not support it
  for (const entry of result.searchParams.entries()) {
    config[entry[0]] = entry[1]
  }

  config.user = config.user || decodeURIComponent(result.username)
  config.password = config.password || decodeURIComponent(result.password)

  if (result.protocol == 'socket:') {
    config.host = decodeURI(result.pathname)
    config.database = result.searchParams.get('db')
    config.client_encoding = result.searchParams.get('encoding')
    return config
  }
  const hostname = dummyHost ? '' : result.hostname
  if (!config.host) {
    // Only set the host if there is no equivalent query param.
    config.host = decodeURIComponent(hostname)
  } else if (hostname && /^%2f/i.test(hostname)) {
    // Only prepend the hostname to the pathname if it is not a URL encoded Unix socket host.
    result.pathname = hostname + result.pathname
  }
  if (!config.port) {
    // Only set the port if there is no equivalent query param.
    config.port = result.port
  }