Generate contents for Markdown file (uses Node.js)

gen-markdown-contents.js

'use strict';

// Use it like this: node gen-markdown-contents.js FILENAME

var fs = require('fs');
var lines = fs.readFileSync(process.argv[2]).toString('utf8').split(/\n\r?/);
var links = {};
var contents = lines.map(lineMapper).filter(Boolean).map(toListItem);

function getNextHash(link) {
  if (!links.hasOwnProperty(link)) {
    links[link] = true;
    return link;
  }

  var i = 1;
  var newLink = link + '-' + i;
  while (links.hasOwnProperty(newLink)) {
    newLink = link + '-' + (++i);
  }
  links[newLink] = true;
  return newLink;
}

function lineMapper(line) {
  var match = line.match(/^(#+)\s+(.*)/);
  if (!match) {
    return;
  }

  var level = match[1].length;
  var title = match[2];
  var text = title
    .replace(/^(((`?static`?|`?const`?|void)\s)*)(`[^`]+`)?/g, '')
    .replace(/`([^`]+)`/, '\'$1\'')
    .trim();

  if (~title.indexOf('static')) {
    text = '.' + text;
  }
  else if (/(`[^`]+`|void)/.test(title) && !~title.indexOf('Event:')) {
    text = '#' + text;
  }

  var hash = title
    .trim()
    .replace(/\s+/g, '-')
    .replace(/[^a-z0-9-_]+/gi, '')
    .toLowerCase();


  return {
    level: level,
    text: text,
    link: getNextHash('#' + hash)
  };
}

function toListItem(itemData) {
  return new Array(itemData.level + 1).join('    ') + '* [' + itemData.text + '](' + itemData.link + ')';
}

console.log(contents.join('\n'));