Hello,

SVG files sometimes contain licensing information, for example [1]:

      <cc:Work
         rdf:about="">
        <dc:format>image/svg+xml</dc:format>
        <dc:type
           rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
        <cc:license
           rdf:resource="http://creativecommons.org/licenses/GPL/2.0/" />
        <dc:title>Hard disk</dc:title>
        <dc:creator>
          <cc:Agent>
            <dc:title>Luca Ferretti <elle.uca@libero.it></dc:title>
          </cc:Agent>
        </dc:creator>
        <dc:contributor>
          <cc:Agent>
            <dc:title>Shape based on exising PNG icon in
gnome-icon-theme</dc:title>
          </cc:Agent>
        </dc:contributor>
        <dc:subject>
          <rdf:Bag>
            <rdf:li>hard disk</rdf:li>
          </rdf:Bag>
        </dc:subject>
      </cc:Work>
      <cc:License
         rdf:about="http://creativecommons.org/licenses/GPL/2.0/">
        <cc:permits
           rdf:resource="http://web.resource.org/cc/Reproduction" />
        <cc:permits
           rdf:resource="http://web.resource.org/cc/Distribution" />
        <cc:requires
           rdf:resource="http://web.resource.org/cc/Notice" />
        <cc:permits
           rdf:resource="http://web.resource.org/cc/DerivativeWorks" />
        <cc:requires
           rdf:resource="http://web.resource.org/cc/ShareAlike" />
        <cc:requires
           rdf:resource="http://web.resource.org/cc/SourceCode" />
      </cc:License>

It would be nice if licensecheck could extract license and copyright
owner from this file. To do so, XPath analysis should be sufficient.

Best,
Andrius

[1]
https://sources.debian.org/src/mate-themes/3.22.21-1/icon-themes/ContrastHigh/scalable/devices/drive-removable-media.svg/?hl=16#L16

Hi Andrius,

Quoting Andrius Merkys (2020-10-31 07:20:11)
[...]

Agreed, licensecheck should ideally detect structured licensing data
like above RDF metadata.

For now, a workaround is to extract such metadata using exiftool (debian
package libimage-exiftool-perl), e.g. like this:

1>&2 exiftool '-textOut!' %d%f.%e:meta -short -short -recurse -ext svg .
licensecheck --copyright --deb-machine --recursive --lines 0 --check '.*' --ignore '.*\.svg$' -- *
find -type f -name '*.svg' -delete

More elaborate use of that workaround (although not for SVG files
specifically) can be found e.g. here:
https://sources.debian.org/src/ghostscript/9.53.3%7Edfsg-5/debian/copyright-check/


 - Jonas

Good morning,

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