update from Atlas with major reorg

2015-04-17 21:29:30 -03:00
parent 57902d31b5
commit a786180239
134 changed files with 369 additions and 520 deletions
--- a/attic/concurrency/charfinder/http_charfinder2.py
+++ b/attic/concurrency/charfinder/http_charfinder2.py
@@ -0,0 +1,126 @@
+#!/usr/bin/env python3
+
+import sys
+import asyncio
+import urllib
+import json
+from aiohttp import web
+
+from charfinder import UnicodeNameIndex
+
+PAGE_TPL = '''
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8">
+    <title>Charserver</title>
+    <script type="text/javascript">
+    function onclick() {
+      var table = document.getElementById("results");
+      for (var char in "ABCDE") {
+        code = char.charCodeAt(0);
+        var tr = document.createElement('tr');
+        tr.appendChild(document.createElement('td'));
+        tr.appendChild(document.createElement('th'));
+        var code_str = 'U+'+code.toString(16);
+        tr.cells[0].appendChild(document.createTextNode(code_str));
+        tr.cells[1].appendChild(document.createTextNode(char));
+      }
+    }
+    </script>
+  </head>
+  <body>
+    <p>
+        <form action="/">
+          <input type="search" name="query" value="">
+          <input type="submit" value="find" onclick="fillTable()">
+        Examples: {links}
+        </form>
+    </p>
+    <p>{message}</p>
+    <hr>
+  <table id="results">
+  </table>
+  </body>
+</html>
+'''
+
+EXAMPLE_WORDS = ('bismillah chess cat circled Malayalam digit Roman face Ethiopic'
+                 ' black mark symbol dot operator Braille hexagram').split()
+
+LINK_TPL = '<a href="/?query={0}" title="find &quot;{0}&quot;">{0}</a>'
+
+LINKS_HTML =  ', '.join(LINK_TPL.format(word)
+                        for word in sorted(EXAMPLE_WORDS, key=str.upper))
+
+ROW_TPL = '<tr id="{code_str}"><td>{code_str}</td><th>{char}</th><td>{name}</td></tr>'
+
+HTML_TYPE = 'text/html; charset=UTF-8'
+TEXT_TYPE = 'text/plain; charset=UTF-8'
+
+RESULTS_PER_REQUEST = 15
+
+index = None  # a UnicodeNameIndex instance
+
+
+@asyncio.coroutine
+def form(request):
+    peername = request.transport.get_extra_info('peername')
+    print('Request from: {}, query: {!r}'.format(peername, request.path_qs))
+    msg = 'Type words describing characters.'
+    text = PAGE_TPL.format(message=msg, links=LINKS_HTML)
+    return web.Response(content_type=HTML_TYPE, text=text)
+
+
+@asyncio.coroutine
+def get_chars(request):
+    peername = request.transport.get_extra_info('peername')
+    print('Request from: {}, GET data: {!r}'.format(peername, dict(request.GET)))
+    query = request.GET.get('query', '')
+    if query:
+        try:
+            start = int(request.GET.get('start', 0))
+            stop = int(request.GET.get('stop', sys.maxsize))
+        except ValueError:
+            raise web.HTTPBadRequest()
+        stop = min(stop, start+RESULTS_PER_REQUEST)
+        num_results, chars = index.find_chars(query, start, stop)
+    else:
+        raise web.HTTPBadRequest()
+    text = ''.join(char if n % 64 else char+'\n'
+            for n, char in enumerate(chars, 1))
+    response_data = {'total': num_results, 'start': start, 'stop': stop}
+    print('Response to query: {query!r}, start: {start}, stop: {stop}'.format(
+          query=query, **response_data))
+    response_data['chars'] = text
+    json_obj = json.dumps(response_data)
+    print('Sending {} characters'.format(len(text)))
+    headers = {'Access-Control-Allow-Origin': '*'}
+    return web.Response(content_type=TEXT_TYPE, headers=headers, text=json_obj)
+
+
+@asyncio.coroutine
+def init(loop, address, port):
+    app = web.Application(loop=loop)
+    app.router.add_route('GET', '/chars', get_chars)
+    app.router.add_route('GET', '/', form)
+
+    server = yield from loop.create_server(app.make_handler(),
+                                           address, port)
+    host = server.sockets[0].getsockname()
+    print('Serving on {}. Hit CTRL-C to stop.'.format(host))
+
+
+def main(address="127.0.0.1", port=8888):
+    port = int(port)
+    loop = asyncio.get_event_loop()
+    loop.run_until_complete(init(loop, address, port))
+    try:
+        loop.run_forever()
+    except KeyboardInterrupt:
+        print('Stopped.')
+
+
+if __name__ == '__main__':
+    index = UnicodeNameIndex()
+    main(*sys.argv[1:])