wtf_wikipedia/src/reference/index.js

parse wikiscript into json

const parse = require('../template/parse/toJSON')
//const parse = require('../../templates/wikipedia/page').citation;
const parseSentence = require('../04-sentence').fromText
const Reference = require('./Reference')

//structured Cite templates - <ref>{{Cite..</ref>
const hasCitation = function (str) {
  return /^ *\{\{ *(cite|citation)/i.test(str) && /\}\} *$/.test(str) && /citation needed/i.test(str) === false
}

const parseCitation = function (tmpl) {
  let obj = parse(tmpl)
  obj.type = obj.template.replace(/cite /, '')
  obj.template = 'citation'
  return obj
}

//handle unstructured ones - <ref>some text</ref>
const parseInline = function (str) {
  let obj = parseSentence(str) || {}
  return {
    template: 'citation',
    type: 'inline',
    data: {},
    inline: obj,
  }
}

//parse <ref></ref> xml tags
const parseRefs = function (section) {
  let references = []
  let wiki = section._wiki

  wiki = wiki.replace(/ ?<ref>([\s\S]{0,1800}?)<\/ref> ?/gi, function (all, tmpl) {
    if (hasCitation(tmpl)) {
      let obj = parseCitation(tmpl)
      if (obj) {
        references.push({ json: obj, wiki: all })
      }
      wiki = wiki.replace(tmpl, '')
    } else {
      references.push({ json: parseInline(tmpl), wiki: all })
    }
    return ' '
  })

  //<ref name=""/>
  wiki = wiki.replace(/ ?<ref [^>]{0,200}?\/> ?/gi, ' ')

  //<ref name=""></ref>
  wiki = wiki.replace(/ ?<ref [^>]{0,200}>([\s\S]{0,1800}?)<\/ref> ?/gi, function (all, tmpl) {
    if (hasCitation(tmpl)) {
      let obj = parseCitation(tmpl)
      if (obj) {
        references.push({ json: obj, wiki: tmpl })
      }
      wiki = wiki.replace(tmpl, '')
    } else {
      references.push({ json: parseInline(tmpl), wiki: all })
    }
    return ' '
  })

  //now that we're done with xml, do a generic + dangerous xml-tag removal
  wiki = wiki.replace(/ ?<[ /]?[a-z0-9]{1,8}[a-z0-9=" ]{2,20}[ /]?> ?/g, ' ') //<samp name="asd">
  section._references = references.map((obj) => new Reference(obj.json, obj.wiki))
  section._wiki = wiki
}

module.exports = parseRefs