Created
April 16, 2015 21:43
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How iqdb.org shows download progress
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| #!/usr/bin/python | |
| import os,SimpleHTTPServer,SocketServer,socket,cgi,urlparse,time | |
| PORT = 8025 | |
| HOSTNAME = socket.gethostbyaddr(socket.gethostname())[0] | |
| HEAD="""<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"><html><head><title>Multi-service image search - Search results</title> | |
| <script type="text/javascript"><!-- | |
| function progress(txt,txt2) { | |
| try { document.getElementById('urlstat').firstChild.nodeValue=txt+txt2; } catch (e) { document.write(txt+" "); } | |
| } | |
| --></script> | |
| </head><body> | |
| <h1>Multi-service image search</h1> | |
| <div class='notice'>Retrieving http://google.com/ (5357 KB)... | |
| <span id='urlstat'>1%</span></div> | |
| """ | |
| PROGRESS="<script type='text/javascript'>progress('%s','');</script>\n" | |
| TAIL="</body></html>" | |
| class webDispatcher(SimpleHTTPServer.SimpleHTTPRequestHandler): | |
| def req_hello(self): | |
| self.send_response(200) | |
| self.send_header("Content-Type","text/html") | |
| self.end_headers() | |
| self.wfile.write('Hello. Go to <a href="/form">the form<a>.') | |
| self.wfile.close() | |
| def req_form(self): | |
| self.send_response(200) | |
| self.send_header("Content-Type","text/html") | |
| self.end_headers() | |
| self.wfile.write(HEAD.encode('utf-8')) | |
| start_time = time.time() | |
| for i in xrange(2, 101): | |
| self.wfile.write((PROGRESS % '%i%%' % i).encode('utf-8')) | |
| time.sleep(0.05) | |
| eta = time.time() - start_time | |
| self.wfile.write((PROGRESS % 'OK, %.1f seconds.' % eta).encode('utf-8')) | |
| self.wfile.write(TAIL.encode('utf-8')) | |
| self.wfile.close() | |
| def do_GET(self): | |
| params = cgi.parse_qs(urlparse.urlparse(self.path).query) | |
| action = urlparse.urlparse(self.path).path[1:] | |
| if action=="": action="hello" | |
| methodname = "req_"+action | |
| try: | |
| getattr(self, methodname)(**params) | |
| except AttributeError: | |
| self.send_response(404) | |
| self.send_header("Content-Type","text/html") | |
| self.end_headers() | |
| self.wfile.write("404 - Not found") | |
| except TypeError: # URL not called with the proper parameters | |
| self.send_response(400) | |
| self.send_header("Content-Type","text/html") | |
| self.end_headers() | |
| self.wfile.write("400 - Bad request") | |
| httpd = SocketServer.ThreadingTCPServer(('', PORT), webDispatcher) | |
| print u"Server listening at http://%s:%s" % (HOSTNAME,PORT) | |
| httpd.serve_forever() |
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