Add method to close writer with error

1 files changed, 8 insertions, 0 deletions

diff --git a/file.go b/file.go
index 061e6a2..f41d88e 100644
--- a/file.go
+++ b/file.go
@@ -31,6 +31,14 @@ func (f *File) Close() error {
 	return nil
 }
 
+func (f *File) CloseWriterWithError(err error) error {
+	if f.w == nil {
+		return ErrUnsupported
+	}
+	pw := f.w.(*io.PipeWriter)
+	return pw.CloseWithError(err)
+}
+
 // implements io.Reader
 func (f *File) Read(b []byte) (int, error) {
 	if f.r == nil {