SVG files in command line / spin off conversion from SVG

[edemaine]

I've written Makefiles to convert SVG to PDF before for papers. I always look at SVG Tiler's source code for how to correctly invoke Inkscape.

Given that SVG Tiler already does this, why not support .svg files on the command line, and convert them as appropriate (-p for PDF, -P for PNG)? This would be especially nice with -j option for multithreading, and -w for watching (#74).

Plausibly this should also be spun off into another tool (svg2, supporting PDF and PNG and any other formats supported by Inkscape), but a fair number of papers probably need both, so including it in SVG Tiler seems nice. My plan is to split off this part of SVG Tiler, and then use it as a library in SVG Tiler.

This existing project has some things to learn from, e.g. automatic detection of number of cores to use.

[edemaine]

svgink is the spinoff. It already reproduces what SVG Tiler can do, but still need:

• -f / selective recompilation for Selective recompilation #70
• -w for Watch mode #74
• SVG Tiler needs to actually use svgink (via API)
• SVG Tiler should passthrough *.svg files directly to svgink