Don't mark SVG files as source

[jpopelka]

SVG file is XML and the only (I guess) XML that we want to mark as source is maven's pom.xml

[pombredanne]

Thanks!
Actually there may be also .pom and .Net .xaml and a good bunch ASP-related things and code from android .xml files... which could be considered to be source code .... this is unfortunately not straightforward!

The only sane way I know of to decide what a given xml file really is "in the wild" is to parse it and then assert some things based on its structure and possible schema (which is what used to/is done be done in Eclipse to recognize/describe what an XML file really is for instance here (https://github.com/eclipse/eclipse.platform/blob/3dce93196b299c5d1852d9a8fbe308b6fc42b32f/ant/org.eclipse.ant.core/src/org/eclipse/ant/internal/core/contentDescriber/AntBuildfileContentDescriber.java) )..

Now on the other hand large XML data files are legions and a curse. And tagging them as sources upfront is mostly counter productive.

Also I would likely consider a pom.xml not as source code, but instead as a package manifest and build script of sorts, the same way an RPM spec file or Debian control files would be manifests.

So with all this said, I have no issue with your proposed change... but in the end this would need to be refined with the upcoming #426 for a higher level file classification (and then I would also likely include Github linguist or its Python port(https://github.com/douban/linguist/network) )
And this is a classification that could then be used to drive and configure what should be or not be scanned.

[codecov]

Codecov Report

Merging #702 into develop will decrease coverage by 0.45%.
The diff coverage is 100%.

@@             Coverage Diff             @@
##           develop     #702      +/-   ##
===========================================
- Coverage    77.87%   77.41%   -0.46%     
===========================================
  Files           86       86              
  Lines        10796    10796              
===========================================
- Hits          8407     8358      -49     
- Misses        2389     2438      +49

Impacted Files	Coverage Δ
src/typecode/contenttype.py	84.8% <100%> (-0.36%)	⬇️
src/scancode/api.py	44.28% <0%> (-34.29%)	⬇️
src/scancode/cli.py	90.8% <0%> (ø)	⬆️

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[pombredanne]

Mreging... Thanks again!

[jpopelka]

Thank you for the description and the merge.