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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-04 17:35:20 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-04 17:35:20 +0000
commite106bf94eff07d9a59771d9ccc4406421e18ab64 (patch)
treeedb6545500e39df9c67aa918a6125bffc8ec1aee /examples/telnet/chat-app.py
parentInitial commit. (diff)
downloadprompt-toolkit-upstream/3.0.36.tar.xz
prompt-toolkit-upstream/3.0.36.zip
Adding upstream version 3.0.36.upstream/3.0.36upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
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diff --git a/examples/telnet/chat-app.py b/examples/telnet/chat-app.py
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+#!/usr/bin/env python
+"""
+A simple chat application over telnet.
+Everyone that connects is asked for his name, and then people can chat with
+each other.
+"""
+import logging
+import random
+
+from prompt_toolkit.contrib.telnet.server import TelnetServer
+from prompt_toolkit.eventloop import get_event_loop
+from prompt_toolkit.formatted_text import HTML
+from prompt_toolkit.shortcuts import PromptSession, clear, prompt
+
+# Set up logging
+logging.basicConfig()
+logging.getLogger().setLevel(logging.INFO)
+
+# List of connections.
+_connections = []
+_connection_to_color = {}
+
+
+COLORS = [
+ "ansired",
+ "ansigreen",
+ "ansiyellow",
+ "ansiblue",
+ "ansifuchsia",
+ "ansiturquoise",
+ "ansilightgray",
+ "ansidarkgray",
+ "ansidarkred",
+ "ansidarkgreen",
+ "ansibrown",
+ "ansidarkblue",
+ "ansipurple",
+ "ansiteal",
+]
+
+
+async def interact(connection):
+ write = connection.send
+ prompt_session = PromptSession()
+
+ # When a client is connected, erase the screen from the client and say
+ # Hello.
+ clear()
+ write("Welcome to our chat application!\n")
+ write("All connected clients will receive what you say.\n")
+
+ name = await prompt_session.prompt_async(message="Type your name: ")
+
+ # Random color.
+ color = random.choice(COLORS)
+ _connection_to_color[connection] = color
+
+ # Send 'connected' message.
+ _send_to_everyone(connection, name, "(connected)", color)
+
+ # Prompt.
+ prompt_msg = HTML('<reverse fg="{}">[{}]</reverse> &gt; ').format(color, name)
+
+ _connections.append(connection)
+ try:
+ # Set Application.
+ while True:
+ try:
+ result = await prompt_session.prompt_async(message=prompt_msg)
+ _send_to_everyone(connection, name, result, color)
+ except KeyboardInterrupt:
+ pass
+ except EOFError:
+ _send_to_everyone(connection, name, "(leaving)", color)
+ finally:
+ _connections.remove(connection)
+
+
+def _send_to_everyone(sender_connection, name, message, color):
+ """
+ Send a message to all the clients.
+ """
+ for c in _connections:
+ if c != sender_connection:
+ c.send_above_prompt(
+ [
+ ("fg:" + color, "[%s]" % name),
+ ("", " "),
+ ("fg:" + color, "%s\n" % message),
+ ]
+ )
+
+
+def main():
+ server = TelnetServer(interact=interact, port=2323)
+ server.start()
+ get_event_loop().run_forever()
+
+
+if __name__ == "__main__":
+ main()