git-repo-language-trends

Prints tabulated data about programming language usage over time in a git repository for a given set of file extensions.

Copy-paste the output into e.g. Google Sheets or Microsoft Excel to easily make a graph. Stacked area chart is recommended.

Example

Simply pass the file extensions of the languages you want the trend for. % cd ~/src/some-git-repo % git-repo-language-trends cpp rs cpp rs 2021w03 0 245 2021w02 143 198 2021w01 386 27 In the output, e.g. 2021w02 means "year 2021, week 02".

Installation

Pre-built binaries

You can download pre-built binaries for Linux, Mac and Windows for the latest release here.

cargo install

If you have Rust and Cargo installed, all you need to do to fetch, build and install the self-contained git-repo-language-trends binary from source is: cargo install git-repo-language-trends

From source

You can of course also clone this repo and then simply cargo build it if you have Rust and Cargo installed on your system.

Implementation details

Currently, the program counts ~20 000 lines / second on a 2018 Macbook Pro.

The current implementation spawns lots of git child processes for the processing. Using the git2-rs library directly would probably result in a significant speedup, but at the cost of much more complicated code.