Source Code for Module rosh.impl.show

 1  # Software License Agreement (BSD License) 
 2  # 
 3  # Copyright (c) 2010, Willow Garage, Inc. 
 4  # All rights reserved. 
 5  # 
 6  # Redistribution and use in source and binary forms, with or without 
 7  # modification, are permitted provided that the following conditions 
 8  # are met: 
 9  # 
10  #  * Redistributions of source code must retain the above copyright 
11  #    notice, this list of conditions and the following disclaimer. 
12  #  * Redistributions in binary form must reproduce the above 
13  #    copyright notice, this list of conditions and the following 
14  #    disclaimer in the documentation and/or other materials provided 
15  #    with the distribution. 
16  #  * Neither the name of Willow Garage, Inc. nor the names of its 
17  #    contributors may be used to endorse or promote products derived 
18  #    from this software without specific prior written permission. 
19  # 
20  # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 
21  # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 
22  # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 
23  # FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 
24  # COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 
25  # INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 
26  # BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 
27  # LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
28  # CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 
29  # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 
30  # ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 
31  # POSSIBILITY OF SUCH DAMAGE. 
32  # 
33  # Revision $Id: show.py 11372 2010-10-01 20:52:44Z kwc $ 
34  """ 
35  Pluggable API for showing ROS data 
36  """ 
37   
38  import os 
39   
40  import rosmsg 
41  import roslib.message 
42   
43  from rosh.impl.namespace import Namespace, Concept 
44   
45 -def show(*args): 
46      # TODO: provide plugin? 
47      if not args: 
48          raise ValueError("show requires an argument") 
49      arg = args[0] 
50      if hasattr(arg, '_show'): 
51          return arg._show() 
52      elif isinstance(arg, type) and issubclass(arg, roslib.message.Message): 
53          print rosmsg.get_msg_text(arg._type) 
54      elif isinstance(arg, type) and issubclass(arg, roslib.message.ServiceDefinition): 
55          print rosmsg.get_srv_text(arg._type) 
56      else: 
57          raise ValueError("unknown show arg: %s: %s"%(type(arg), arg)) 
58