Provide graphml export option

[virtuald]

trafficstars

In my mind one of the key things (besides visualization) Sourcetrail provides is a useful graph structure for source code that can be used for various types of analysis, without having to go through the pain of writing a clang analyzer yourself. However, since sourcetrail doesn't have plugins (#1076), writing your own analysis tools is a bit of work, and may not let you use other kinds of graph analysis tooling.

I've started on making a graphml exporter at https://gist.github.com/virtuald/95ecfa5047671f008395f5781a359cc7 , but it seems that getGraphForNodeTypes and getGraphForAll don't actually seem to create a full in memory graph.

[virtuald]

Updated the gist, using the SqliteIndexStorage directly made this super easy. The graph is usable, but there's more one could do to it.

[mrkdev]

What a great idea! I really would like to see that included in sourcetrail, as it allows to perform further, graph based architecture analysis. Please include this feature in the next release of sourcetrail!

[mlangkabel]

I could imaging this to be availabe via a command line call. The current API looks like this:

$ Sourcetrail.exe -h
Usage:
  Sourcetrail [command] [option...] [positional arguments]

Commands:
  config                 Change preferences relevant to project indexing.*
  index                  Index a certain project.*

  * has its own --help

Options:
  -h [ --help ]          Print this help message
  -v [ --version ]       Version of Sourcetrail
  --project-file arg     Open Sourcetrail with this project (.srctrlprj)

Positional Arguments:
  1: project-file

For this feature I could imaging an export-graphml command that also requires the --project-file option to know for which project the graphml shall be exported. If anyone wants to implement this, please go ahead!