From 7d60b63712598c5d01f89e63d10f8676eda40e26 Mon Sep 17 00:00:00 2001
From: Scott Bahling <sbahling@mudgum.net>
Date: Mon, 25 Mar 2013 10:10:57 +0100
Subject: Make panfry serve stopable

---
 panfry/main.py | 44 +++++++++++++++++++++++++++++++++++++++-----
 1 file changed, 39 insertions(+), 5 deletions(-)

diff --git a/panfry/main.py b/panfry/main.py
index 0713a8f..40c2b15 100755
--- a/panfry/main.py
+++ b/panfry/main.py
@@ -2,25 +2,46 @@
 # -*- coding: utf-8 -*-
 from __future__ import print_function
 import os
+import signal
 import shutil
 import shlex
 import SimpleHTTPServer
-import SocketServer
+import BaseHTTPServer
+import httplib
 import panfry.cli
 from panfry.templater import Templater
 from panfry.document import Document
 
 
+class StoppableHttpRequestHandler(SimpleHTTPServer.SimpleHTTPRequestHandler):
+    """http request handler with QUIT stopping the server"""
+
+    def do_QUIT(self):
+        """send 200 OK response, and set server.stop to True"""
+        self.send_response(200)
+        self.end_headers()
+        self.server.stop = True
+
+
+class StoppableHttpServer(BaseHTTPServer.HTTPServer):
+    """http server that reacts to self.stop flag"""
+
+    def serve_forever(self):
+        """Handle one request at a time until stopped."""
+        self.stop = False
+        while not self.stop:
+            self.handle_request()
+
+
 def get_env():
     env = panfry.cli.init_argparser().parse_args()
     env.pub_path = os.path.abspath(env.pub_path)
-    
+
     if env.cmd in ['gen']:
         if not os.path.isdir(env.doc_path):
             print("%s directory not found. Aborting..." % env.doc_path)
             exit(1)
 
-
         if not env.templates_path:
             env.templates_path = os.path.join(env.doc_path, 'templates')
 
@@ -75,11 +96,24 @@ def gen(env):
 
 def serve(env):
     os.chdir(env.pub_path)
-    Handler = SimpleHTTPServer.SimpleHTTPRequestHandler
 
-    httpd = SocketServer.TCPServer(("", int(env.port)), Handler)
+    def signal_handler(signal, frame):
+        print('You pressed Ctrl+C!')
+
+        def stop_server(port):
+            """send QUIT request to http server running on localhost:<port>"""
+            conn = httplib.HTTPConnection("localhost:%d" % env.port)
+            conn.request("QUIT", "/")
+            conn.getresponse()
+        exit(0)
+
+    signal.signal(signal.SIGINT, signal_handler)
+    Handler = StoppableHttpRequestHandler
+
+    httpd = StoppableHttpServer(("", int(env.port)), Handler)
     print("serving at port: %s" % int(env.port))
     httpd.serve_forever()
+    signal.pause()
 
 
 def main():
-- 
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