Method Prune

prune.go:33–66

(opt PruneOptions)

}

func (r *Repository) Prune(opt PruneOptions) error {
	los, ok := r.Storer.(storer.LooseObjectStorer)
	if !ok {
		return ErrLooseObjectsNotSupported
	}

	pw := newObjectWalker(r.Storer)
	err := pw.walkAllRefs()
	if err != nil {
		return err
	}
	// Now walk all (loose) objects in storage.
	return los.ForEachObjectHash(func(hash plumbing.Hash) error {
		// Get out if we have seen this object.
		if pw.isSeen(hash) {
			return nil
		}
		// Otherwise it is a candidate for pruning.
		// Check out for too new objects next.
		if !opt.OnlyObjectsOlderThan.IsZero() {
			// Errors here are non-fatal. The object may be e.g. packed.
			// Or concurrently deleted. Skip such objects.
			t, err := los.LooseObjectTime(hash)
			if err != nil {
				return nil
			}
			// Skip too new objects.
			if !t.Before(opt.OnlyObjectsOlderThan) {
				return nil
			}
		}
		return opt.Handler(hash)
	})
}