static.js

static.js

var path = require('path');
var http = require('http');
var fs = require('fs');

var port = process.argv[2] || 3001;
var resDir = process.argv[3] || __dirname;
var contextPath = process.argv[4] || ''; // /dump

resDir = path.resolve(resDir);

console.log("Port: " + port);
console.log("Resolved dir: " + resDir);
console.log("Context path: " + contextPath);

function handleError(error, res) {
  if (error.code == 'ENOENT') {
    res.writeHead(404, {'Content-Type': 'text/html'});
    res.write('File not found');
    res.end();
  } else {
    res.writeHead(500, {'Content-Type': 'text/html'});
    res.write('Sorry, check with the site admin for error: ' + error.code + ' ..\n');
    res.end();
  }
}

function cutPrefix(str, rmv) {
  return str.slice( str.indexOf( rmv ) + rmv.length );
}

http.createServer(function (req, res) {
  res.setHeader('Content-Type', 'text/html');

  if (req.url.indexOf( contextPath ) != 0) {
    res.write('Please use contextPath ' + contextPath);
    res.end();
    return
  }

  var filePath = '.' + cutPrefix(unescape(req.url), contextPath);
  var dir = path.join(resDir, filePath);
  dir = path.resolve(dir);
  try {
    var stats = fs.statSync(dir);

    if (stats.isDirectory()) {
      // listing dir
      fs.readdir(dir, function (err, files) {
        //handling error
        if (err) {
          console.error("Error during scan directory: " + err);
          handleError(err, res);
          return;
        }
        //listing all files using forEach
        res.write('<h2>' + dir + '</h2>');
        res.write('<ul>');
        files.forEach(function (file) {
          res.write(
              '<li><a href="' + escape(path.join(req.url, file)) + '">' + file + '</a></li>'
          )
        });
        res.write('</ul>');
        res.end()
      });
    } else {
      // serving file
      var file = dir;
      fs.readFile(file, "binary", function (error, content) {
        if (error) {
          console.error("Error during serving file: " + error);
          handleError(error, res);
          return;
        } else {
          res.writeHead(200, {'Content-Type': 'application/octet-stream'});
          res.write(content, "binary");
          res.end();
        }
      });

    }
  } catch (error) {
    console.error("Error during stat: " + error);
    handleError(error, res);
  }
}).listen(port, function () {
  console.log('Server started at port ' + port)
});