updated from Atlas

18-asyncio/charfinder/http_charfinder.py

@@ -0,0 +1,72 @@
+#!/usr/bin/env python3
+
+import sys
+import asyncio
+from aiohttp import web
+
+from charfinder import UnicodeNameIndex
+
+TEMPLATE_NAME = 'http_charfinder.html'
+CONTENT_TYPE = 'text/html; charset=UTF-8'
+SAMPLE_WORDS = ('bismillah chess cat circled Malayalam digit'
+                ' Roman face Ethiopic black mark symbol dot'
+                ' operator Braille hexagram').split()
+
+ROW_TPL = '<tr><td>{code_str}</td><th>{char}</th><td>{name}</td></tr>'
+LINK_TPL = '<a href="/?query={0}" title="find &quot;{0}&quot;">{0}</a>'
+LINKS_HTML = ', '.join(LINK_TPL.format(word) for word in
+                       sorted(SAMPLE_WORDS, key=str.upper))
+
+
+index = UnicodeNameIndex()
+with open(TEMPLATE_NAME) as tpl:
+    template = tpl.read()
+template = template.replace('{links}', LINKS_HTML)
+
+# BEGIN HTTP_CHARFINDER_HOME
+def home(request):  # <1>
+    query = request.GET.get('query', '').strip()  # <2>
+    print('Query: {!r}'.format(query))  # <3>
+    if query:  # <4>
+        descriptions = list(index.find_descriptions(query))
+        res = '\n'.join(ROW_TPL.format(**vars(descr))
+                        for descr in descriptions)
+        msg = index.status(query, len(descriptions))
+    else:
+        descriptions = []
+        res = ''
+        msg = 'Enter words describing characters.'
+
+    html = template.format(query=query, result=res,  # <5>
+                           message=msg)
+    print('Sending {} results'.format(len(descriptions)))  # <6>
+    return web.Response(content_type=CONTENT_TYPE, text=html) # <7>
+# END HTTP_CHARFINDER_HOME
+
+
+# BEGIN HTTP_CHARFINDER_SETUP
+@asyncio.coroutine
+def init(loop, address, port):  # <1>
+    app = web.Application(loop=loop)  # <2>
+    app.router.add_route('GET', '/', home)  # <3>
+    handler = app.make_handler()  # <4>
+    server = yield from loop.create_server(handler,
+                                           address, port)  # <5>
+    return server.sockets[0].getsockname()  # <6>
+
+def main(address="127.0.0.1", port=8888):
+    port = int(port)
+    loop = asyncio.get_event_loop()
+    host = loop.run_until_complete(init(loop, address, port))  # <7>
+    print('Serving on {}. Hit CTRL-C to stop.'.format(host))
+    try:
+        loop.run_forever()  # <8>
+    except KeyboardInterrupt:  # CTRL+C pressed
+        pass
+    print('Server shutting down.')
+    loop.close()  # <9>
+
+
+if __name__ == '__main__':
+    main(*sys.argv[1:])
+# END HTTP_CHARFINDER_SETUP