From: Ralf Jung <post@ralfj.de>
Date: Thu, 10 Oct 2013 17:15:12 +0000 (+0200)
Subject: tyshell: add tab completion
X-Git-Url: https://git.ralfj.de/saartuer.git/commitdiff_plain/abb21b78411793efcdf8832f6837201bfc4ce15c?hp=--cc

tyshell: add tab completion
---

abb21b78411793efcdf8832f6837201bfc4ce15c
diff --git a/tyshell b/tyshell
index 1ffccfe..1b90bd0 100755
--- a/tyshell
+++ b/tyshell
@@ -52,6 +52,12 @@ commands = {
 	'buzz': sendcmd(tuerSock, 'buzz'),
 }
 
+def complete_command(cmd):
+	'''returns a list of commands (as strings) starting with cmd'''
+	return list(filter(lambda x: x.startswith(cmd), commands.keys()))
+readline.set_completer(lambda cmd, num: (complete_command(cmd)+[None])[num]) # wrap complete_command for readline's weird completer API
+readline.parse_and_bind("tab: complete") # run completion on tab
+
 # input loop
 print("Welcome to tyshell. Use help to see what you can do.")
 while True:
@@ -66,7 +72,7 @@ while True:
 	if command[0] in commands: # needed in case a complete command is a prefix of another one
 		cmdoptions = [command[0]]
 	else:
-		cmdoptions = list(filter(lambda x: command[0].startswith(x), commands.keys()))
+		cmdoptions = complete_command(command[0])
 	# check how many we found
 	if len(cmdoptions) == 0: # no commands fit prefix
 		print("Command %s not found. Use help." % command[0])