SVN support for starship.rs via a custom commands.

starship-svn runs and parses the svn info of the working directory.

SVN only has a branch name by convention. The name is derived from the svn info URL. This is done with the assumption that the repo uses the conventional trunk/branches/tags repository layout. If the URL path contains a folder named 'trunk', the branch name is trunk. If the URL path contains a folder named 'branches' or 'tags' the next folder is considered the branch name, if it is not blacklisted.

If your branch named folder is not a direct child of 'branches' or 'tags' the inbetween folders can be blacklisted. The algorithm continues to consider deeper folders as the branch name until a non blacklisted folder name is found.

starship-svn uses svn CLI, so make sure it is installed. This can be checked with svn --version.

Install starship-svn

cargo install --git https://github.com/IsaacDynamo/starship-svn

Alternatively for some platforms a prebuilt executable can be downloaded from the github actions workflow.

Add the following to your starship.toml.

[custom.svn]
description = 'SVN branch name'
command     = 'starship-svn'
when        = 'starship-svn'
format      = 'on [$symbol$output]($style) '
symbol      = ' '
style       = 'bold purple'

Currently SVN support is done via a custom command. This means that the starship directory module is not aware of the SVN repository. So some path shortening doesn't work as it would with a Git repository.

A future improvement would be to port this code to a starship module, and add native SVN support to starship.