add proper constants for node type

internal/dump/common.go

@@ -67,7 +67,7 @@ func sendNodes(ctx context.Context, repo restic.BlobLoader, root *restic.Node, c
 	}
 
 	// If this is no directory we are finished
-	if !IsDir(root) {
+	if root.Type != restic.NodeTypeDir {
 		return nil
 	}
 
@@ -81,7 +81,7 @@ func sendNodes(ctx context.Context, repo restic.BlobLoader, root *restic.Node, c
 
 		node.Path = path.Join(root.Path, nodepath)
 
-		if !IsFile(node) && !IsDir(node) && !IsLink(node) {
+		if node.Type != restic.NodeTypeFile && node.Type != restic.NodeTypeDir && node.Type != restic.NodeTypeSymlink {
 			return nil
 		}
 
@@ -176,18 +176,3 @@ func (d *Dumper) writeNode(ctx context.Context, w io.Writer, node *restic.Node)
 
 	return wg.Wait()
 }
-
-// IsDir checks if the given node is a directory.
-func IsDir(node *restic.Node) bool {
-	return node.Type == "dir"
-}
-
-// IsLink checks if the given node as a link.
-func IsLink(node *restic.Node) bool {
-	return node.Type == "symlink"
-}
-
-// IsFile checks if the given node is a file.
-func IsFile(node *restic.Node) bool {
-	return node.Type == "file"
-}

internal/dump/tar.go

@@ -79,16 +79,16 @@ func (d *Dumper) dumpNodeTar(ctx context.Context, node *restic.Node, w *tar.Writ
 		header.Mode |= cISVTX
 	}
 
-	if IsFile(node) {
+	if node.Type == restic.NodeTypeFile {
 		header.Typeflag = tar.TypeReg
 	}
 
-	if IsLink(node) {
+	if node.Type == restic.NodeTypeSymlink {
 		header.Typeflag = tar.TypeSymlink
 		header.Linkname = node.LinkTarget
 	}
 
-	if IsDir(node) {
+	if node.Type == restic.NodeTypeDir {
 		header.Typeflag = tar.TypeDir
 		header.Name += "/"
 	}

internal/dump/tar_test.go

@@ -124,7 +124,7 @@ func TestFieldTooLong(t *testing.T) {
 	node := restic.Node{
 		Name: "file_with_xattr",
 		Path: "/file_with_xattr",
-		Type: "file",
+		Type: restic.NodeTypeFile,
 		Mode: 0644,
 		ExtendedAttributes: []restic.ExtendedAttribute{
 			{

internal/dump/zip.go

@@ -40,7 +40,7 @@ func (d *Dumper) dumpNodeZip(ctx context.Context, node *restic.Node, zw *zip.Wri
 	}
 	header.SetMode(node.Mode)
 
-	if IsDir(node) {
+	if node.Type == restic.NodeTypeDir {
 		header.Name += "/"
 	}
 
@@ -49,7 +49,7 @@ func (d *Dumper) dumpNodeZip(ctx context.Context, node *restic.Node, zw *zip.Wri
 		return errors.Wrap(err, "ZipHeader")
 	}
 
-	if IsLink(node) {
+	if node.Type == restic.NodeTypeSymlink {
 		if _, err = w.Write([]byte(node.LinkTarget)); err != nil {
 			return errors.Wrap(err, "Write")
 		}