76 lines
2.1 KiB
Python
76 lines
2.1 KiB
Python
import inspect
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import sys
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import logging
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from PyQt5.QtCore import QObject, pyqtSignal
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cmd_dict = {}
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def register_all():
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import qutebrowser.commands.commands
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def is_cmd(obj):
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return (inspect.isclass(obj) and
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obj.__module__ == 'qutebrowser.commands.commands')
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for (name, cls) in inspect.getmembers(qutebrowser.commands.commands,
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is_cmd):
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if cls.bind:
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obj = cls()
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cmd_dict[obj.name] = obj
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class CommandParser(QObject):
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error = pyqtSignal(str)
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def parse(self, text):
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parts = text.strip().split()
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cmd = parts[0]
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argv = parts[1:]
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try:
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obj = cmd_dict[cmd]
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except KeyError:
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self.error.emit("{}: no such command".format(cmd))
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return
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try:
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obj.check(argv)
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except TypeError:
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self.error.emit("{}: invalid argument count".format(cmd))
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return
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obj.run(argv)
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class Command(QObject):
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nargs = 0
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name = None
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key = None
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signal = None
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count = False
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bind = True
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def __init__(self):
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super().__init__()
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if self.name is None:
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self.name = self.__class__.__name__.lower()
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def check(self, argv):
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if ((isinstance(self.nargs, int) and len(argv) != self.nargs) or
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(self.nargs == '?' and len(argv) > 1) or
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(self.nargs == '+' and len(argv) < 1)):
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raise TypeError("Invalid argument count!")
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def run(self, argv=None, count=None):
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logging.debug("Cmd called: {}({})".format(self.__class__.__name__,
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", ".join(argv) if argv else ''))
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if not self.signal:
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raise NotImplementedError
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# some sane defaults
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if self.nargs == 0:
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if count is not None:
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self.signal.emit(count)
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else:
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self.signal.emit()
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elif self.nargs == 1:
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if count is not None:
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self.signal.emit(count, argv[0])
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else:
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self.signal.emit(argv[0])
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else:
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raise NotImplementedError
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