unity introspection tree debugging script now can write output to any format supported by dot, and has the option to display the image with the 'eog' app.

(bzr r1876.1.1)

1 files changed, 29 insertions, 11 deletions

diff --git a/tools/unity-introspection-visualiser.py b/tools/unity-introspection-visualiser.py
index fae236e2c..abb8e9041 100755
--- a/tools/unity-introspection-visualiser.py
+++ b/tools/unity-introspection-visualiser.py
@@ -2,7 +2,8 @@
 
 #
 # Script to generate a nice PNG file of the currently running unity introspection tree.
-from sys import argv
+from argparse import ArgumentParser
+from os.path import splitext
 import dbus
 
 try:
@@ -36,7 +37,6 @@ def string_rep(dbus_type):
 else:
 return repr(dbus_type)
 
-
 def escape(s):
 """Escape a string so it can be use in a dot label."""
 return pydot.quote_if_necessary(s).replace('<','\\<').replace('>', '\\>')
@@ -60,16 +60,17 @@ def traverse_tree(state, parent, graph):
 graph.add_edge(pydot.Edge(parent, child))
 
 traverse_tree(child_state, child, graph)
- 
+
 
 if __name__ == '__main__':
- if len(argv) != 2:
- print """Usage: %s output_file.png.
+ parser = ArgumentParser()
+ mg = parser.add_mutually_exclusive_group(required=True)
+ mg.add_argument('-o', '--output', nargs=1,
+ help='Store output in specified file on disk.')
+ mg.add_argument('-d','--display', action='store_true',
+ help='Display output in image viewer.')
 
-This script queries the currently running Unity process and dumps the entire
-introspection tree into a graph, and renders this to a PNG file.
-""" % (argv[0])
- exit(1)
+ args = parser.parse_args()
 
 u = Unity()
 introspection_tree = u.get_state()
@@ -78,10 +79,27 @@ introspection tree into a graph, and renders this to a PNG file.
 graph.set_node_defaults(shape='Mrecord')
 graph.set_fontname('Ubuntu')
 graph.set_fontsize('10')
- 
+
 gnode_unity = pydot.Node("Unity")
 gnode_unity.set_comment("Unity")
 traverse_tree(introspection_tree[0], gnode_unity, graph)
 
- graph.write(argv[1], format='png')
+ if args.output:
+ base, extension = splitext(args.output[0])
+ write_method_name = 'write_' + extension[1:]
+ if hasattr(graph, write_method_name):
+ getattr(graph, write_method_name)(args.output[0])
+ else:
+ print "Error: unsupported format: '%s'" % (extension)
+ elif args.display:
+ from tempfile import NamedTemporaryFile
+ from subprocess import call
+ tf = NamedTemporaryFile(suffix='.png', delete=False)
+ tf.write(graph.create_png())
+ tf.close()
+ print tf.name
+ call(["eog", tf.name])
+ else:
+ print 'unknown output mode!'
+