cpython/Lib/cmd.py
Guido van Rossum 9b3bc71598 * aifc.py: don't die on invalid MARK chunk
* calendar.py: remove stuff now built in time; some cleanup and
  generalization in the calendar printing
* cmd.py: use __init__.
* tzparse.py: This module is no longer necessary -- use builtin time instead!
1993-06-20 21:02:22 +00:00

66 lines
1.3 KiB
Python

# A generic class to build line-oriented command interpreters
import string
import sys
import linecache
PROMPT = '(Cmd) '
IDENTCHARS = string.letters + string.digits + '_'
class Cmd:
def __init__(self):
self.prompt = PROMPT
self.identchars = IDENTCHARS
self.lastcmd = ''
def init(self):
return self
def cmdloop(self):
stop = None
while not stop:
try:
line = raw_input(self.prompt)
except EOFError:
line = 'EOF'
stop = self.onecmd(line)
def onecmd(self, line):
line = string.strip(line)
if not line:
line = self.lastcmd
else:
self.lastcmd = line
i, n = 0, len(line)
while i < n and line[i] in self.identchars: i = i+1
cmd, arg = line[:i], string.strip(line[i:])
if cmd == '':
return self.default(line)
else:
try:
func = getattr(self, 'do_' + cmd)
except AttributeError:
return self.default(line)
return func(arg)
def default(self, line):
print '*** Unknown syntax:', line
def do_help(self, arg):
if arg:
# XXX check arg syntax
try:
func = getattr(self, 'help_' + arg)
except:
print '*** No help on', `arg`
return
func()
else:
import newdir
names = newdir.dir(self.__class__)
cmds = []
for name in names:
if name[:3] == 'do_':
cmds.append(name[3:])
print cmds