add statemachine doc

[saartuer.git] / tyshell

diff --git a/tyshell b/tyshell
index 34ef515cbc8bccb05476368efcafc23ba44f7d8a..22809262fd4598b150428e7d8a4ea0fe1aef54e2 100755 (executable)
--- a/tyshell
+++ b/tyshell
@@ -9,7 +9,7 @@ import socket
 tuerSock = "/run/tuer.sock"
 
 # use a histfile
-histfile = os.path.join(os.path.expanduser("~"), ".pyshellhist")
+histfile = os.path.join(os.path.expanduser("~"), ".tyshellhist")
 try:
     readline.read_history_file(histfile)
 except IOError:
@@ -18,7 +18,7 @@ import atexit
 atexit.register(readline.write_history_file, histfile)
 
 # available commands
-def help(c):
+def helpcmd(c):
        print("Available commands: %s" % ", ".join(sorted(commands.keys())))
 
 def extcmd(cmd):
@@ -33,17 +33,20 @@ def sendcmd(addr, cmd):
                print("Running %s..." % (cmd))
                s = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
                s.connect(addr)
+               s.settimeout(10.0)
                s.send(cmd.encode())
                data = s.recv(4)
                s.close()
-               print("...done")
-               if data != b'1':
-                       print("Received unexpected answer %s" % str(data))
+               print(data.decode('utf-8'))
        return run
 
+def exitcmd(c):
+       print("Bye")
+       return True
+
 commands = {
-       'exit': None, # catched below, quits the loop
-       'help': help,
+       'exit': exitcmd,
+       'help': helpcmd,
        'open': sendcmd(tuerSock, 'open'),
        'close': sendcmd(tuerSock, 'close'),
        'buzz': sendcmd(tuerSock, 'buzz'),
@@ -59,14 +62,22 @@ while True:
                break
        command = shlex.split(command)
        if not len(command): continue
-       # execute command
-       if command[0] == "exit":
-               break
-       elif command[0] in commands:
+       # find suiting commands
+       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()))
+       # check how many we found
+       if len(cmdoptions) == 0: # no commands fit prefix
+               print("Command %s not found. Use help." % command[0])
+       elif len(cmdoptions) == 1: # exactly one command fits (prefix)
                try:
-                       commands[command[0]](command)
+                       res = commands[cmdoptions[0]](command)
+                       if res: break
                except Exception as e:
                        print("Error while executing %s: %s" % (command[0], str(e)))
-       else:
-               print("Command %s not found. Use help." % command[0])
-print("Bye")
+       else: # multiple commands fit the prefix
+               print("Ambiguous command prefix, please choose one of the following:")
+               print("\t", " ".join(cmdoptions))
+               # TODO: put current "command[0]" into the shell for the next command, but such that it is deletable with backspace
+