def _b_cmd(browser, tab, scriptmgr, params):
    pass

def _p_cmd(browser, tab, scriptmgr, params):
    pass

def _processCdbCmd(cmd_str, browser, tab, scriptmgr):
    cmdlist = cmd_str.split(' ')
    if len(cmdlist) < 1:
        return
    cmd_hash = {
        'b': _b_cmd,
        'p': None,
    }
    if cmdlist[0] in cmd_hash:
        cmd_hash[cmdlist[0]](browser, tab, scriptmgr, cmdlist[1:])
    else:
        print('not found %s cmd' % cmdlist[0])

def processCmd(browser, tab, scriptmgr):
    cmdline= input('').strip()
    try:
        if len(cmdline) > 0 :
            if cmdline[0] == '!':
                msg = eval(cmdline[1:])
            else:
                _processCdbCmd(cmdline[1:], browser, tab, scriptmgr)
    except Exception as e:
        print(e)