update

Signed-off-by: hongming <talonwan@yunify.com>

vendor/github.com/open-policy-agent/opa/internal/file/url/url.go

@@ -0,0 +1,42 @@
+// Copyright 2019 The OPA Authors.  All rights reserved.
+// Use of this source code is governed by an Apache2
+// license that can be found in the LICENSE file.
+
+// Package url contains helpers for dealing with file paths and URLs.
+package url
+
+import (
+	"fmt"
+	"net/url"
+	"runtime"
+	"strings"
+)
+
+var goos = runtime.GOOS
+
+// Clean returns a cleaned file path that may or may not be a URL.
+func Clean(path string) (string, error) {
+
+	if strings.Contains(path, "://") {
+
+		url, err := url.Parse(path)
+		if err != nil {
+			return "", err
+		}
+
+		if url.Scheme != "file" {
+			return "", fmt.Errorf("unsupported URL scheme: %v", path)
+		}
+
+		path = url.Path
+
+		// Trim leading slash on Windows if present. The url.Path field returned
+		// by url.Parse has leading slash that causes CreateFile() calls to fail
+		// on Windows. See https://github.com/golang/go/issues/6027 for details.
+		if goos == "windows" && len(path) >= 1 && path[0] == '/' {
+			path = path[1:]
+		}
+	}
+
+	return path, nil
+}