regorg files

author: Guillaume Horel <guillaume.horel@gmail.com> 2012-04-02 02:37:41 -0400
committer: Guillaume Horel <guillaume.horel@gmail.com> 2012-04-02 02:37:41 -0400
commit: 28a5d4fbf8a42649360e9d1e1206c062e0a5ce8d (patch)
tree: 0c0842aab6ca8259f14fc9b760eb742098fa1aaa /alias-angular/scripts/web-server.js
parent: 0a74881345b16b39487493364bb0c24f8cc47967 (diff)
download: alias-28a5d4fbf8a42649360e9d1e1206c062e0a5ce8d.tar.gz
1 files changed, 243 insertions, 0 deletions
diff --git a/alias-angular/scripts/web-server.js b/alias-angular/scripts/web-server.js
new file mode 100755
index 0000000..1ff37b3
--- /dev/null
+++ b/alias-angular/scripts/web-server.js
@@ -0,0 +1,243 @@
+#!/usr/bin/env node
+
+var sys = require('sys'),
+    http = require('http'),
+    fs = require('fs'),
+    url = require('url'),
+    events = require('events');
+
+var DEFAULT_PORT = 8000;
+
+function main(argv) {
+  new HttpServer({
+    'GET': createServlet(StaticServlet),
+    'HEAD': createServlet(StaticServlet)
+  }).start(Number(argv[2]) || DEFAULT_PORT);
+}
+
+function escapeHtml(value) {
+  return value.toString().
+    replace('<', '&lt;').
+    replace('>', '&gt;').
+    replace('"', '&quot;');
+}
+
+function createServlet(Class) {
+  var servlet = new Class();
+  return servlet.handleRequest.bind(servlet);
+}
+
+/**
+ * An Http server implementation that uses a map of methods to decide
+ * action routing.
+ *
+ * @param {Object} Map of method => Handler function
+ */
+function HttpServer(handlers) {
+  this.handlers = handlers;
+  this.server = http.createServer(this.handleRequest_.bind(this));
+}
+
+HttpServer.prototype.start = function(port) {
+  this.port = port;
+  this.server.listen(port);
+  sys.puts('Http Server running at http://localhost:' + port + '/');
+};
+
+HttpServer.prototype.parseUrl_ = function(urlString) {
+  var parsed = url.parse(urlString);
+  parsed.pathname = url.resolve('/', parsed.pathname);
+  return url.parse(url.format(parsed), true);
+};
+
+HttpServer.prototype.handleRequest_ = function(req, res) {
+  var logEntry = req.method + ' ' + req.url;
+  if (req.headers['user-agent']) {
+    logEntry += ' ' + req.headers['user-agent'];
+  }
+  sys.puts(logEntry);
+  req.url = this.parseUrl_(req.url);
+  var handler = this.handlers[req.method];
+  if (!handler) {
+    res.writeHead(501);
+    res.end();
+  } else {
+    handler.call(this, req, res);
+  }
+};
+
+/**
+ * Handles static content.
+ */
+function StaticServlet() {}
+
+StaticServlet.MimeMap = {
+  'txt': 'text/plain',
+  'html': 'text/html',
+  'css': 'text/css',
+  'xml': 'application/xml',
+  'json': 'application/json',
+  'js': 'application/javascript',
+  'jpg': 'image/jpeg',
+  'jpeg': 'image/jpeg',
+  'gif': 'image/gif',
+  'png': 'image/png'
+};
+
+StaticServlet.prototype.handleRequest = function(req, res) {
+  var self = this;
+  var path = ('./' + req.url.pathname).replace('//','/').replace(/%(..)/, function(match, hex){
+    return String.fromCharCode(parseInt(hex, 16));
+  });
+  var parts = path.split('/');
+  if (parts[parts.length-1].charAt(0) === '.')
+    return self.sendForbidden_(req, res, path);
+  fs.stat(path, function(err, stat) {
+    if (err)
+      return self.sendMissing_(req, res, path);
+    if (stat.isDirectory())
+      return self.sendDirectory_(req, res, path);
+    return self.sendFile_(req, res, path);
+  });
+}
+
+StaticServlet.prototype.sendError_ = function(req, res, error) {
+  res.writeHead(500, {
+      'Content-Type': 'text/html'
+  });
+  res.write('<!doctype html>\n');
+  res.write('<title>Internal Server Error</title>\n');
+  res.write('<h1>Internal Server Error</h1>');
+  res.write('<pre>' + escapeHtml(sys.inspect(error)) + '</pre>');
+  sys.puts('500 Internal Server Error');
+  sys.puts(sys.inspect(error));
+};
+
+StaticServlet.prototype.sendMissing_ = function(req, res, path) {
+  path = path.substring(1);
+  res.writeHead(404, {
+      'Content-Type': 'text/html'
+  });
+  res.write('<!doctype html>\n');
+  res.write('<title>404 Not Found</title>\n');
+  res.write('<h1>Not Found</h1>');
+  res.write(
+    '<p>The requested URL ' +
+    escapeHtml(path) +
+    ' was not found on this server.</p>'
+  );
+  res.end();
+  sys.puts('404 Not Found: ' + path);
+};
+
+StaticServlet.prototype.sendForbidden_ = function(req, res, path) {
+  path = path.substring(1);
+  res.writeHead(403, {
+      'Content-Type': 'text/html'
+  });
+  res.write('<!doctype html>\n');
+  res.write('<title>403 Forbidden</title>\n');
+  res.write('<h1>Forbidden</h1>');
+  res.write(
+    '<p>You do not have permission to access ' +
+    escapeHtml(path) + ' on this server.</p>'
+  );
+  res.end();
+  sys.puts('403 Forbidden: ' + path);
+};
+
+StaticServlet.prototype.sendRedirect_ = function(req, res, redirectUrl) {
+  res.writeHead(301, {
+      'Content-Type': 'text/html',
+      'Location': redirectUrl
+  });
+  res.write('<!doctype html>\n');
+  res.write('<title>301 Moved Permanently</title>\n');
+  res.write('<h1>Moved Permanently</h1>');
+  res.write(
+    '<p>The document has moved <a href="' +
+    redirectUrl +
+    '">here</a>.</p>'
+  );
+  res.end();
+  sys.puts('301 Moved Permanently: ' + redirectUrl);
+};
+
+StaticServlet.prototype.sendFile_ = function(req, res, path) {
+  var self = this;
+  var file = fs.createReadStream(path);
+  res.writeHead(200, {
+    'Content-Type': StaticServlet.
+      MimeMap[path.split('.').pop()] || 'text/plain'
+  });
+  if (req.method === 'HEAD') {
+    res.end();
+  } else {
+    file.on('data', res.write.bind(res));
+    file.on('close', function() {
+      res.end();
+    });
+    file.on('error', function(error) {
+      self.sendError_(req, res, error);
+    });
+  }
+};
+
+StaticServlet.prototype.sendDirectory_ = function(req, res, path) {
+  var self = this;
+  if (path.match(/[^\/]$/)) {
+    req.url.pathname += '/';
+    var redirectUrl = url.format(url.parse(url.format(req.url)));
+    return self.sendRedirect_(req, res, redirectUrl);
+  }
+  fs.readdir(path, function(err, files) {
+    if (err)
+      return self.sendError_(req, res, error);
+
+    if (!files.length)
+      return self.writeDirectoryIndex_(req, res, path, []);
+
+    var remaining = files.length;
+    files.forEach(function(fileName, index) {
+      fs.stat(path + '/' + fileName, function(err, stat) {
+        if (err)
+          return self.sendError_(req, res, err);
+        if (stat.isDirectory()) {
+          files[index] = fileName + '/';
+        }
+        if (!(--remaining))
+          return self.writeDirectoryIndex_(req, res, path, files);
+      });
+    });
+  });
+};
+
+StaticServlet.prototype.writeDirectoryIndex_ = function(req, res, path, files) {
+  path = path.substring(1);
+  res.writeHead(200, {
+    'Content-Type': 'text/html'
+  });
+  if (req.method === 'HEAD') {
+    res.end();
+    return;
+  }
+  res.write('<!doctype html>\n');
+  res.write('<title>' + escapeHtml(path) + '</title>\n');
+  res.write('<style>\n');
+  res.write('  ol { list-style-type: none; font-size: 1.2em; }\n');
+  res.write('</style>\n');
+  res.write('<h1>Directory: ' + escapeHtml(path) + '</h1>');
+  res.write('<ol>');
+  files.forEach(function(fileName) {
+    if (fileName.charAt(0) !== '.') {
+      res.write('<li><a href="' +
+        escapeHtml(fileName) + '">' +
+        escapeHtml(fileName) + '</a></li>');
+    }
+  });
+  res.write('</ol>');
+  res.end();
+};
+
+// Must be last,
+main(process.argv);
author	Guillaume Horel <guillaume.horel@gmail.com>	2012-04-02 02:37:41 -0400
committer	Guillaume Horel <guillaume.horel@gmail.com>	2012-04-02 02:37:41 -0400
commit	28a5d4fbf8a42649360e9d1e1206c062e0a5ce8d (patch)
tree	0c0842aab6ca8259f14fc9b760eb742098fa1aaa /alias-angular/scripts/web-server.js
parent	0a74881345b16b39487493364bb0c24f8cc47967 (diff)
download	alias-28a5d4fbf8a42649360e9d1e1206c062e0a5ce8d.tar.gz