outmsg.py

linux下的一款播放器

# 
# ***** BEGIN LICENSE BLOCK *****
# Source last modified: $Id: outmsg.py,v 1.2 2004/07/07 22:00:04 hubbe Exp $
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"""Global message output system.  This is really a little messy, but
its hard to fix at this point."""


class OutputHook:
    def __init__(self):
        self.block_output_count = 0
        self.hook = None


    def set_hook(self, hook):
        self.hook = hook
        

    def block(self):
        self.block_output_count = self.block_output_count + 1


    def unblock(self):
        self.block_output_count = self.block_output_count + 1


    def write(self, text):
        self.P_write(text)


    def P_write(self, text):
        ## return if output is blocked
        if self.block_output_count:
            return
        
        if self.hook:
            self.hook(text)
        else:
            print text


class SendOutputHook(OutputHook):
    pass


class ErrorOutputHook(OutputHook):
    def write(self, text):
        self.P_write('ERROR: %s' % (text))


class DebugOutputHook(OutputHook):
    def write(self, text):
        self.P_write('DEBUG: %s' % (text))


class VerboseOutputHook(OutputHook):
    pass


## outmsg instance
_send = SendOutputHook()
_error = ErrorOutputHook()
_debug = DebugOutputHook()
_verbose = VerboseOutputHook()


## entrypoints
def set_send_hook(hook):
    _send.set_hook(hook)


def set_error_hook(hook):
    _error.set_hook(hook)


def set_debug_hook(hook):
    _debug.set_hook(hook)


def set_verbose_hook(hook):
    _verbose.set_hook(hook)
    

def send(*args):
    if len(args) == 1:
        _send.write(args[0])
    elif len(args) == 2:
        mode = args[0]
        text = args[1]
        
        if mode == 'e':
            _error.write(text)
        elif mode == 'd':
            _debug.write(text)
        elif mode == 'v':
            _verbose.write(text)
        else:
            _send.write(text)
        

def error(text):
    _error.write(text)


def debug(text):
    _debug.write(text)


def verbose(text):
    _verbose.write(text)