srd/routes/index.js

var router = require('express').Router();
var mcache = require('memory-cache');
var FileSet = require('file-set');
var md = require('markdown-it')({ typographer: true });
    md.use(require('markdown-it-anchor'), {permalink: true, level: 2, permalinkBefore: true, permalinkSymbol: "§"});
    md.use(require('markdown-it-title'), 0);
    md.use(require('markdown-it-custom-block'), {
      importTable: function(arg) {
        /*var filepath = arg.substring(0, arg.indexOf(' '));
        var fileset = new FileSet(path.join('srd', filepath));

        for (var i = 0; i < fileset.files.length; i++) {
          var data = fs.readFileSync(fileset.files[i], { encoding: 'utf8' });
          var parsed = md.parse(data);
          var args = arg.substring(filepath.length).split(' ');
          var parts = {}
          for (var j = 0; j < args.length; j++) {
            var key = args[j].substring(0, args[j].indexOf('='));
            var value = args[j].substring(key.length+1);
            parts[key] = value;
          }
          console.log(parts);

          var table = {}

          var state = 0;
          for (var j = 0; j < parsed.length; j++) {
            switch(state) {
              case 0:
                if (parsed[j].type == 'heading_open') {
                  state = 1;
                }
                break;
              case 1:
                if (parsed[j].type == 'heading_close') {
                  state = 2;
                } else if (parsed[j].type == 'inline') {
                  table.title = parsed[j].content;
                }
                break;
            }
          }
          console.log(fileset.files[i]);
          //console.log(parsed);
        }

        console.log(fileset)*/
        return '';
      }
    });
var fs = require('fs');
var path = require('path');
var chokidar = require('chokidar');

var dictionary = require('../srd/sys/dictionary.js');
var conf = require('../srd/sys/conf.js');
var menu = require('../srd/sys/menu.js');

var cache = function(duration) {
  return function(req, res, next) {
    var key = '__'+conf['shortname']+'__' + req.originalUrl || req.url;
    var cached = mcache.get(key);
    if (cached) {
      res.send(cached);
      return;
    } else {
      res.sendResponse = res.send;
      res.send = function(body) {
        mcache.put(key, body, duration * 60 * 1000 );
        res.sendResponse(body);
      }
      next();
    }
  }
};

router.get('*', cache(1), function(req, res) {
  var target = req.path;
  if (target === "/") {                                 // Root
    target = '/index';
  } else if (target.charAt(target.length-1) == '/') { // Directory Index
    target = target.substring(0, target.length-1);
  }

  var file = path.join(__dirname, '..', 'srd', target+'.md');

  var crumbs = target.split('/');

  fs.readFile(file, (err, data) => {
    if (err) {
      res.render('index', {content: '404'});
      return;
      //throw err;
    }

    // make a local copy of our dictionary and remove the current page, if existing
    var local_dictionary = Object.assign({}, dictionary);
    delete local_dictionary[crumbs[crumbs.length-1]];
    var text;
    if (Object.keys(local_dictionary).length !== 0) {
      // replace words using our local dictionary
      var regexp = RegExp ('[^\[(]\\b(' + Object.keys (local_dictionary).join ('|') + ')\\b', 'g');
      text = data.toString().replace(regexp, function (_, word) { return _.charAt(0)+local_dictionary[word]; });
    } else {
      text = data.toString();
    }

    // render out the md
    var env = {}
    var rendered = md.render(text, env);

    // build the location
    var loc = '<a href="/">'+conf['shortname']+'</a>';
    for (var i = 1; i < crumbs.length; i++) {
      if (crumbs[i] == '') continue;
      loc += ' &#8594; <a href="'+crumbs.slice(0,i).join('/')+'/'+crumbs[i]+'">'+(i == crumbs.length-1 ? env.title : crumbs[i].replace('-', ' '))+'</a>';
    }
    //var title = crumbs[crumbs.length-1].replace('-', ' ');
    var title = env.title

    // render with the engine
    res.render('index', {content: rendered, menu: menu, location: loc, title: (title != 'index' ? title : ''), www_name: conf.www_name, www_copyright: conf.www_copyright });
  });
});

// watch the sys folder and reload requires on change
var watcher = chokidar.watch('../srd/sys/', {ignored: /^./, persistent: true});
watcher.on('change', function(path) {
  console.log('Reloading sys files');
  delete require.cache['../srd/sys/dictionary.js'];
  delete require.cache['../srd/sys/conf.js'];
  delete require.cache['../srd/sys/menu.js'];
  dictionary = require('../srd/sys/dictionary.js');
  conf = require('../srd/sys/conf.js');
  menu = require('../srd/sys/menu.js');
});


module.exports = router;