Language statistics bar for repositories

[lafriks]

Fixes #2165

Implements language statistic calculation using https://github.com/src-d/enry library.

TODO:

• Function to calculate language stats for git repository
• Save language stats to database
• Display language stats bar (cleanup depends on Implement getting HTML color code for languages src-d/enry#233)
• Add support for linguist-vendored in .gitattributes file (this could be added later in other PR)
• Async update language stats to database when repository changes
• Initial language stats calculation for existing repositories

Screenshots:

[adelowo]

We are waiting on you 😉 😉

[lunny]

should fix #2165

[stale]

This pull request has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs during the next 2 months. Thank you for your contributions.

[adelowo]

😢😢😢😢

[MarkusAmshove]

Can this support adding own languages via some kind of configuration, e.g. by extension-to-name mapping?

[davidak]

@MarkusAmshove why not add new languages upstream?

[MarkusAmshove]

Because they are internal self written languages, think about e.g. DSLs.
It's not that important, but would be neat :-)

Edit: I don't know how linguistic works, but if the gitattributes files allows to have "new" languages in them, and the go implementation copies that, it will work out of the box.

[kolaente]

@MarkusAmshove I'd prefer it if this pr would be merged without your feature request and then a second one after this one with the feature. Makes it easier to review :)

[MarkusAmshove]

No problemo :-)

[stale]

This pull request has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs during the next 2 months. Thank you for your contributions.

[lafriks]

I will work on this a bit later :)

[techknowlogick]

I think you need to use code.gitea.io/gitea/modules/timeutil to reference TimeStamp

[codecov-io]

Codecov Report

Merging #4824 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #4824   +/-   ##
=======================================
  Coverage   41.59%   41.59%           
=======================================
  Files         480      480           
  Lines       64144    64144           
=======================================
  Hits        26680    26680           
  Misses      34004    34004           
  Partials     3460     3460

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update f1c4148...f1c4148. Read the comment docs.