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