completer.py 文件源码

def dispatch_custom_completer(self, text):
        if not self.custom_completers:
            return

        line = self.line_buffer
        if not line.strip():
            return None

        # Create a little structure to pass all the relevant information about
        # the current completion to any custom completer.
        event = SimpleNamespace()
        event.line = line
        event.symbol = text
        cmd = line.split(None,1)[0]
        event.command = cmd
        event.text_until_cursor = self.text_until_cursor

        # for foo etc, try also to find completer for %foo
        if not cmd.startswith(self.magic_escape):
            try_magic = self.custom_completers.s_matches(
                self.magic_escape + cmd)
        else:
            try_magic = []

        for c in itertools.chain(self.custom_completers.s_matches(cmd),
                 try_magic,
                 self.custom_completers.flat_matches(self.text_until_cursor)):
            try:
                res = c(event)
                if res:
                    # first, try case sensitive match
                    withcase = [r for r in res if r.startswith(text)]
                    if withcase:
                        return withcase
                    # if none, then case insensitive ones are ok too
                    text_low = text.lower()
                    return [r for r in res if r.lower().startswith(text_low)]
            except TryNext:
                pass

        return None