Method walkFunc

query/query.go:85–119

walkFunc returns a filepath.WalkFunc which evaluates the condition tree against the given file.

(seen map[string]bool, excluder Excluder,
	workFunc interface{})

// walkFunc returns a filepath.WalkFunc which evaluates the condition tree
// against the given file.
func (q *Query) walkFunc(seen map[string]bool, excluder Excluder,
	workFunc interface{}) filepath.WalkFunc {
	return func(path string, info os.FileInfo, err error) error {
		if err != nil {
			return err
		}

		if path == "." {
			return nil
		}

		// Avoid walking a single directory more than once.
		if _, ok := seen[path]; ok {
			return nil
		}
		seen[path] = true

		if excluder.shouldExclude(path) {
			return nil
		}

		if ok, err := q.ConditionTree.evaluateTree(path, info); err != nil {
			return err
		} else if !ok {
			return nil
		}

		results, err := q.applyModifiers(path, info)
		if err != nil {
			return err
		}
		workFunc.(func(string, os.FileInfo, map[string]interface{}))(path, info, results)
		return nil
	}
}