@jackens/md2json/md2json.js

Markdown to JSON

/* ISC (c) 2018+ Jackens * https://github.com/jackens/md2json */

(function (E, W) {
  var PATTERN = /(?:```(\w+)(.+?)```)|(?:`(.*?)`)|(?:\*\*(.*?)\*\*)|(?:\*(.*?)\*)|(?:__(.*?)__)|(?:_(.*?)_)|(?:~~(.*?)~~)|(?:<(.*?)>)/
  var KEYS = ['info', 'lang', 'src', 'code', 'a2', 'a1', 'u2', 'u1', 'del', 'url', 'items']

  function getNewItem () {
    var result = { heading: null }
    KEYS.map(function (key) {
      result[key] = []
    })
    return result
  }

  function $ (md) {
    var result = getNewItem()
    var heading = 0
    var current = result
    var parents = [result]
    var newItem
    md.replace(/\r/g, '').replace(/\t/g, '    ').replace(/```(\w+)\n((.|\n)+?)```/g, function (_, lang, code) {
      return '```' + lang + '\t' + code.replace(/\n/g, '\t') + '```'
    }).split('\n').map(function (line) {
      if (!line) {
        return
      }
      var matchH = line.match(/^(#+)\s*(.*)$/)
      if (matchH) {
        heading = matchH[1].length
        line = matchH[2]
      }
      var matchLi = line.match(/^(\s*)(?:(\*|-|\d+\.)\s+)?(.*)$/)
      var level = heading + (matchLi[1].length >> 2) + +!!matchLi[2]
      while (parents.length < level - 1) {
        newItem = getNewItem()
        parents[parents.length - 1].items.push(newItem)
        parents.push(newItem)
      }
      if (parents.length > level) {
        parents.length = level
      }
      if ((matchH || matchLi[2]) && level > 1) {
        newItem = getNewItem()
        parents[level - 2].items.push(newItem)
        parents[level - 1] = newItem
      }
      current = parents[level - 1]
      if (matchH) {
        current.heading = heading
      }
      matchLi[3].split(PATTERN).forEach(function (_, chunkIndex, chunks) {
        if (chunkIndex % 10) {
          return
        }
        KEYS.forEach(function (key, keyIndex) {
          var value = (chunks[chunkIndex + keyIndex] || '').replace(/^\s+|\s+$/g, '')
          if (value) {
            current[key].push(keyIndex === 2 ? value.replace(/\t/g, '\n').replace(new RegExp('\n {' + 4 * (level - heading) + '}', 'g'), '\n') : value)
          }
        })
      })
    })
    return result
  }

  try {
    (W = window).require = function (I) { return W[E][I] };
    (W[E] = W[E] || {})['@jackens/md2json'] = $
  } catch (_) {
    module.exports = $
  }
})('module.exports')