[REF] tools: rename extras into tools

tools/server.py

@@ -0,0 +1,46 @@
+#!/usr/bin/env python3
+
+import threading
+import time
+from http.server import SimpleHTTPRequestHandler, HTTPServer
+
+HOST = '127.0.0.1'
+PORT = 8000
+URL = 'http://{0}:{1}/tools'.format(HOST, PORT)
+
+
+# We define our own handler here to remap owl.js GET requests to the Owl build
+# in dist/.  This is useful for the benchmarks and playground applications.
+# With this, we can simply copy the playground folder as is in the gh-page when
+# we want to update the playground.
+class OWLHandler(SimpleHTTPRequestHandler):
+    def do_GET(self):
+        if self.path == '/tools/owl.js':
+            self.path = '/dist/owl.js'
+        return SimpleHTTPRequestHandler.do_GET(self)
+
+    def end_headers(self):
+        self.disable_cache_headers()
+        SimpleHTTPRequestHandler.end_headers(self)
+
+    def disable_cache_headers(self):
+        self.send_header("Cache-Control", "no-cache, no-store, must-revalidate")
+        self.send_header("Pragma", "no-cache")
+        self.send_header("Expires", "0")
+
+
+OWLHandler.extensions_map['.js'] = 'application/javascript'
+
+if __name__ == "__main__":
+    print("Owl Extras")
+    print("----------")
+    print("Server running on: {}".format(URL))
+    httpd = HTTPServer((HOST, PORT), OWLHandler)
+    threading.Thread(target=httpd.serve_forever, daemon=True).start()
+
+    while True:
+        try:
+            time.sleep(1)
+        except KeyboardInterrupt:
+            httpd.server_close()
+            quit(0)