Precice-config-visualizer

Using preCICE
,
1

precice-config.xml (3.2 KB)
I try to analyze my configuration file with the tool

cat precice-config.xml | precice-config-visualizer | dot -Tpdf > config.pdf

But it gives some errors as follows:

  File "/home/michael/.local/bin/precice-config-visualizer", line 7, in <module>
    exec(compile(f.read(), __file__, 'exec'))
  File "/home/michael/config-visualizer/bin/precice-config-visualizer", line 237, in <module>
    main()
  File "/home/michael/config-visualizer/bin/precice-config-visualizer", line 230, in main
    xml = parseXML(args.infile.read())
  File "/home/michael/config-visualizer/bin/precice-config-visualizer", line 23, in parseXML
    return etree.fromstring(content, p)
  File "src/lxml/etree.pyx", line 3237, in lxml.etree.fromstring
  File "src/lxml/parser.pxi", line 1891, in lxml.etree._parseMemoryDocument
ValueError: Unicode strings with encoding declaration are not supported. Please use bytes input or XML fragments without declaration.

It works with the sample xml file. So I guess my installation is fine. What could be wrong with my xml file attached? I have deleted some comments and the header which should not cause the issues.

2

What version of the visualizer are you using? Did you freshly install it?

It just worked for me, but I have installed the config visualizer some time ago.

config-michael
config-michael1235×777 120 KB

3

Alex,
Thank you for your testing! After your confirming, I found I made a silly mistake. I executed the command in a wrong directory which has no xml file. Now I get the same figure as you posted.

2 Likes
4

Great to hear that your problem is solved. I still find your error message interesting. If I call the config visualizer with a non-existing file I get a different error message:

$ cat filename-that-does-not-exist.xml | precice-config-visualizer
cat: filename-that-does-not-exist.xml: No such file or directory
Traceback (most recent call last):
  File "/home/jaustar/.local/bin/precice-config-visualizer", line 237, in <module>
    main()
  File "/home/jaustar/.local/bin/precice-config-visualizer", line 230, in main
    xml = parseXML(args.infile.read())
  File "/home/jaustar/.local/bin/precice-config-visualizer", line 23, in parseXML
    return etree.fromstring(content, p)
  File "src/lxml/etree.pyx", line 3235, in lxml.etree.fromstring
  File "src/lxml/parser.pxi", line 1876, in lxml.etree._parseMemoryDocument
  File "src/lxml/parser.pxi", line 1757, in lxml.etree._parseDoc
  File "src/lxml/parser.pxi", line 1068, in lxml.etree._BaseParser._parseUnicodeDoc
  File "src/lxml/parser.pxi", line 601, in lxml.etree._ParserContext._handleParseResultDoc
  File "src/lxml/parser.pxi", line 711, in lxml.etree._handleParseResult
  File "src/lxml/parser.pxi", line 640, in lxml.etree._raiseParseError
  File "<string>", line 1
lxml.etree.XMLSyntaxError: Document is empty, line 1, column 1

I am a bit curious what happened in your case and whether we should open an issue in the GitHub repository of the visualizer.

5

You are right. If the file does not exist, cat will complain cat: precice-config1.xml: No such file or directory.

I am confused why I first got the error message and later I got it worked. Probably I did something which I was not aware of.

After some test, it seems everything is ok if there is no encoding="UTF-8 ? in my xml file.
<?xml version="1.0" encoding="UTF-8" ?>

Sorry for the confusion. I think the tool works well.

6

There is currently an open issue regarding this: Cannot process XML files formatted with our formatter · Issue #6 · precice/config-visualizer · GitHub

7

Thanks, @Makis. That explains the issue!

8

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