wtf_wikipedia/src/_lib/encode.js

parse wikiscript into json

//dumpster-dive throws everything into mongodb  - github.com/spencermountain/dumpster-dive
//mongo has some opinions about what characters are allowed as keys and ids.
//https://stackoverflow.com/questions/12397118/mongodb-dot-in-key-name/30254815#30254815
const specialChar = /[\\.$]/

/**
 * this function encodes a string to make it mongodb compatible.
 * https://stackoverflow.com/questions/12397118/mongodb-dot-in-key-name/30254815#30254815
 *
 * @param {string} str
 * @returns {string} the encoded string
 */
const encodeStr = function (str) {
  if (typeof str !== 'string') {
    str = ''
  }
  str = str.replace(/\\/g, '\\\\')
  str = str.replace(/^\$/, '\\u0024')
  str = str.replace(/\./g, '\\u002e')
  return str
}

const encodeObj = function (obj = {}) {
  let keys = Object.keys(obj)
  for (let i = 0; i < keys.length; i += 1) {
    if (specialChar.test(keys[i]) === true) {
      let str = encodeStr(keys[i])
      if (str !== keys[i]) {
        obj[str] = obj[keys[i]]
        delete obj[keys[i]]
      }
    }
  }
  return obj
}

module.exports = {
  encodeObj: encodeObj,
}