Initialize module and dependencies

vendor/golang.org/x/vuln/internal/scan/filepath.go

@@ -0,0 +1,35 @@
+// Copyright 2022 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package scan
+
+import (
+	"path/filepath"
+	"strings"
+)
+
+// AbsRelShorter takes path and returns its path relative
+// to the current directory, if shorter. Returns path
+// when path is an empty string or upon any error.
+func AbsRelShorter(path string) string {
+	if path == "" {
+		return ""
+	}
+
+	c, err := filepath.Abs(".")
+	if err != nil {
+		return path
+	}
+	r, err := filepath.Rel(c, path)
+	if err != nil {
+		return path
+	}
+
+	rSegments := strings.Split(r, string(filepath.Separator))
+	pathSegments := strings.Split(path, string(filepath.Separator))
+	if len(rSegments) < len(pathSegments) {
+		return r
+	}
+	return path
+}