Portable settings

[Eskaan]

The Feature

Added a "settingsPath.txt" file inside of the App itself that, when a path is put in, uses the given path to redirect the settings from the usual %AppData%/Processing folder to the given folder.

What it does

It modifies the getSettingsFolder method in Base that provides the folder so that it first checks (and creates) the settingsPath file in the app folder. If this file then contains a line, it will try using this String as the setting folder (relative paths possible). If the file is empty or doesn't exist, it will use the default directory for the settings.

Why do I want that feature?

processing/processing4#357
I need this feature in the program because my Teacher wants to use it in our school and I don't want to manually search and install every library I want. I will also create a pr for a hopefully portable version of the app by moving the settings into the app or (more likely) creating a file inside of the app containing the path to the settings file (needed because %AppData% resets every time rebooting a school PC). Please tell me if you have a solution in mind so I can build it to your wishes.

Sidenotes

• I know you don't want too much code in the Base class (you mentioned it somewhere) but I see this as the best solution.
• If you take the windows and linux versions of the app and edit each app's setting paths it gets fully portable across systems :D

Draft

• Will follow up whit GUI implementation soon. Under the sketch location or at the bottom?
• Maybe a parser for the relative paths to make them less confusing:
  /home/apps/Processing.app/../../foo/bar/ -> /home/foo/bar/
• Check if relative path validation works on windows. If not.. Well a few if statements will do.
• Generally test feature on Windows since I am on a Mac.

[benfry]

Adding this back for 4.0 beta 4… Not unlike the approach here, you'll just need to make a settings.txt file inside lib, and include settings.path=/an/absolute/path/for/settings to make it work.

(The commit isn't pushed here yet because I'm breaking some other things at the moment and don't want to break the repo.)

[benfry]

Those changes are now committed; if you run into problems, file an issue and I can look into it. I haven't had time to test it yet.

[github-actions]

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