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- # 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 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
-