message.py

class Message:

    def __init__(self, command, params, trailing, prefix=None, raw_line=None):
        self.prefix = prefix
        self.command = command.upper()
        self.params = params
        self.trailing = trailing
        self._raw_line = raw_line

    @property
    def all_params(self):
        if self.trailing is not None:
            return self.params + [self.trailing]
        return self.params

    @classmethod
    def from_line(cls, line):
        raw_line = line

        prefix = None
        if line.startswith(':'):
            prefix, line = line[1:].split(None, 1)

        command, line = line.split(None, 1)

        if ' :' in line:
            params, trailing = line.split(' :', 1)
        else:
            params, trailing = line, None

        params = params.split()

        return cls(command, params, trailing, prefix=prefix, raw_line=raw_line)