PathInput for existing directories

[timtebeek]

Spring Boot Migrator has a scan option where users enter an existing directory. At first glance PathInput seemed a good fit, but almost immediately we saw it's hardcoded to exclude existing directories. And since checkPath is private, it's not easy to adjust this behaviour.

How would you recommend we ask users to input an existing directory?
And is this something to contribute back here?

I could see a number of options:

1. Make checkPath protected, with an override dropping the directory requirement.
2. Add a flag argument on whether to allow directories
3. Add an argument to test/filter files for applicability
4. Fully new DirectoryInput flow component
5. Stick with @ShellOption valueProvider
6. Nothing in spring-shell; users should implement their own component.
7. Others?

Any input much appreciated. :)

[jvalkeal]

There's discussion #474 to see where to take that component.

[jvalkeal]

I've been experimenting with a new component PathSearch which is loosely based on ideas stolen from https://github.com/junegunn/fzf. User gives a base path for search and then optional pattern for matching/limiting results. Here's a screencast how this idea works in my wip branch.

[jvalkeal]

I'm closing this if favour of #556.