* Improve install code to avoid low-level mistakes.
If a user tries to do a re-install in a Gitea database, they gets a warning and double check.
When Gitea runs, it never create empty app.ini automatically.
Also some small (related) refactoring:
* Refactor db.InitEngine related logic make it more clean (especially for the install code)
* Move some i18n strings out from setting.go to make the setting.go can be easily maintained.
* Show errors in CLI code if an incorrect app.ini is used.
* APP_DATA_PATH is created when installing, and checked when starting (no empty directory is created any more).
* Retry rename on lock induced failures
Due to external locking on Windows it is possible for an
os.Rename to fail if the files or directories are being
used elsewhere.
This PR simply suggests retrying the rename again similar
to how we handle the os.Remove problems.
Fix#16427
Signed-off-by: Andrew Thornton <art27@cantab.net>
* resolve CI fail
Co-authored-by: techknowlogick <techknowlogick@gitea.io>
