__init__.py

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# Revision $Id$

from __future__ import print_function

import logging
import sys
import subprocess
from optparse import OptionParser

import rxgraph.impl
import rosgraph.roslogging

def rxgraph_main():
    parser = OptionParser(usage="usage: rxgraph [options]")
    parser.add_option("-o", "--dot",
                      dest="output_file", default=None,
                      help="ouput graph as graphviz dot file", metavar="DOTFILE")
    parser.add_option("--nodens",
                      dest="node_ns", default=None,
                      help="only show nodes in specified namespace")
    parser.add_option("--topicns",
                      dest="topic_ns", default=None,
                      help="only show topics in specified namespace")
    
    options, args = parser.parse_args()
    if args:
        parser.error("invalid arguments")

    graphviz_found = False
    try:
        p = subprocess.Popen(['dot', '-V'], stdout=subprocess.PIPE, stderr=subprocess.PIPE)
        p.communicate()
        if p.returncode == 0:
            graphviz_found = True
    except:
        pass
    
    if not graphviz_found:
        print("Graphviz does not appear to be installed on your system. Please run:\n\n\trosdep install rxgraph\n\nto install the necessary dependencies on your system",file=sys.stderr)
        sys.exit(1)

        
    # initialize logging libraries
    rosgraph.roslogging.configure_logging('rxgraph', logging.INFO)
    try:
        import wx
        app = wx.App()    

        frame = rxgraph.impl.init_frame()
        updater = rxgraph.impl.init_updater(frame, node_ns=options.node_ns, topic_ns=options.topic_ns, output_file=options.output_file)
        updater.start()
        
        frame.Show()
        app.MainLoop()

    except KeyboardInterrupt:
        pass
    finally:
        rxgraph.impl.set_shutdown(True)

        
if __name__ == '__main__':
    rxgraph_main()