xdot crashes on floats in the .dot file

Status changed to 'Confirmed' because the bug affects multiple users.

The title for this bug is a bit misleading. I do get a crash too, with this simple graph:

$ cat test-xdot
digraph {
 caesar [label = "caesar"];
 lizard [label = "lizard"];
 newton [label = "newton"];
 lizard -> newton;
 newton -> lizard;
 caesar -> lizard;
 lizard -> caesar;
}

So I'd say that xdot is currently *totally* broken in 14.0.4

Additional info found by google:
http://www.linuxquestions.org/questions/linux-newbie-8/xdot-library-is-not-able-to-open-graphs-in-ubuntu-14-04-a-4175504761/

http://www.linuxhospital.com/read/xdot-library-is-not-able-to-open-graphs-in-ubuntu-14.04.html

http://wyldeplayground.net/xdot-python-script-for-viewing-graphs-generated-by-graphviz-is-not-working-on-ubuntu-14-04/

https://stackoverflow.com/questions/23623717/graphviz-xdot-utility-fails-to-parse-graphs

http://www.linuxine.com/story/xdot-library-not-able-open-graphs-ubuntu-1404

This bug was fixed in the package xdot - 0.6-1

---------------
xdot (0.6-1) unstable; urgency=medium

  * New upstream release.
    - Supports graphviz >= 2.31 (LP: #1317688)
  * Switch debian/watch to https.
  * Bump copyright years.
  * Bump Standards-Version to 3.9.5, no changes needed.

 -- Stefano Rivera <email address hidden> Sun, 25 May 2014 17:57:57 +0200

Hello Brian, or anyone else affected,

Accepted xdot into trusty-proposed. The package will build now and be available at http://launchpad.net/ubuntu/+source/xdot/0.5-2ubuntu0.1 in a few hours, and then in the -proposed repository.

Please help us by testing this new package. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Your feedback will aid us getting this update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug, mentioning the version of the package you tested, and change the tag from verification-needed to verification-done. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed. In either case, details of your testing will help us make a better decision.

Further information regarding the verification process can be found at https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in advance!

[test case]
$ cat test-xdot
digraph {
 caesar [label = "caesar"];
 lizard [label = "lizard"];
 newton [label = "newton"];
 lizard -> newton;
 newton -> lizard;
 caesar -> lizard;
 lizard -> caesar;
}

$ xdot test-xdot
Traceback (most recent call last):
  File "/usr/bin/xdot", line 4, in <module>
    xdot.main()
  File "/usr/lib/python2.7/dist-packages/xdot.py", line 1947, in main
    win.open_file(args[0])
  File "/usr/lib/python2.7/dist-packages/xdot.py", line 1881, in open_file
    self.set_dotcode(fp.read(), filename)
  File "/usr/lib/python2.7/dist-packages/xdot.py", line 1863, in set_dotcode
    if self.widget.set_dotcode(dotcode, filename):
  File "/usr/lib/python2.7/dist-packages/xdot.py", line 1477, in set_dotcode
    self.set_xdotcode(xdotcode)
  File "/usr/lib/python2.7/dist-packages/xdot.py", line 1497, in set_xdotcode
    self.graph = parser.parse()
  File "/usr/lib/python2.7/dist-packages/xdot.py", line 1167, in parse
    DotParser.parse(self)
  File "/usr/lib/python2.7/dist-packages/xdot.py", line 977, in parse
    self.parse_graph()
  File "/usr/lib/python2.7/dist-packages/xdot.py", line 986, in parse_graph
    self.parse_stmt()
  File "/usr/lib/python2.7/dist-packages/xdot.py", line 1032, in parse_stmt
    self.handle_node(id, attrs)
  File "/usr/lib/python2.7/dist-packages/xdot.py", line 1142, in handle_node
    shapes.extend(parser.parse())
  File "/usr/lib/python2.7/dist-packages/xdot.py", line 612, in parse
    w = s.read_number()
  File "/usr/lib/python2.7/dist-packages/xdot.py", line 494, in read_number
    return int(self.read_code())
ValueError: invalid literal for int() with base 10: '32.25'

[recheck by proposed package]
* enabled trusty-proposed & installed package.

$ LANG=C apt-cache policy xdot
xdot:
  Installed: 0.5-2ubuntu0.1
  Candidate: 0.5-2ubuntu0.1
  Version table:
 *** 0.5-2ubuntu0.1 0
        400 http://ubuntu-ashisuto.ubuntulinux.jp/ubuntu/ trusty-proposed/universe i386 Packages
        100 /var/lib/dpkg/status
     0.5-2 0
        500 http://ubuntu-ashisuto.ubuntulinux.jp/ubuntu/ trusty/universe i386 Packages

$ xdot test-xdot
* The graph was displayed. see the screenshot(text-xdot.png).

The bug was corrected.

This bug was fixed in the package xdot - 0.5-2ubuntu0.1

---------------
xdot (0.5-2ubuntu0.1) trusty; urgency=medium

  * Support Xdot format 1.6, as used by graphviz >= 2.35 (LP: #1317688)
 -- Stefano Rivera <email address hidden> Sun, 25 May 2014 17:25:57 +0200

The verification of the Stable Release Update for xdot has completed successfully and the package has now been released to -updates. Subsequently, the Ubuntu Stable Release Updates Team is being unsubscribed and will not receive messages about this bug report. In the event that you encounter a regression using the package from -updates please report a new bug using ubuntu-bug and tag the bug report regression-update so we can easily find any regresssions.

Thanks for the fix. xdot works again now as expected