wtf_wikipedia/src/01-document/redirects.js

parse wikiscript into json

const i18n = require('../_data/i18n')
const parseLink = require('../link/parse')
//pulls target link out of redirect page
const REDIRECT_REGEX = new RegExp('^[ \n\t]*?#(' + i18n.redirects.join('|') + ') *?(\\[\\[.{2,180}?\\]\\])', 'i')

const isRedirect = function (wiki) {
  //too long to be a redirect?
  if (!wiki || wiki.length > 500) {
    return false
  }
  return REDIRECT_REGEX.test(wiki)
}

const parse = function (wiki) {
  let m = wiki.match(REDIRECT_REGEX)
  if (m && m[2]) {
    let links = parseLink(m[2]) || []
    return links[0]
  }
  return {}
}

module.exports = {
  isRedirect: isRedirect,
  parse: parse,
}