rename and remove unused utils

1 files changed, 39 insertions, 0 deletions

diff --git a/utils/io.go b/utils/io.go
new file mode 100644
index 0000000..fcc341e
--- /dev/null
+++ b/utils/io.go
@@ -0,0 +1,39 @@
+package utils
+
+import (
+	"compress/zlib"
+	"io"
+)
+
+// NopCloser returns a WriteCloser with a no-op Close method wrapping
+// the provided Writer w.
+func NopCloser(w io.Writer) io.WriteCloser {
+	return nopCloser{w}
+}
+
+type nopCloser struct {
+	io.Writer
+}
+
+func (nopCloser) Close() error { return nil }
+
+type ReadWrapper func(r io.Reader) (io.ReadCloser, error)
+type WriteWrapper func(w io.Writer) io.WriteCloser
+
+// ZlibReader wraps a reader with a new zlib.Reader.
+func ZlibReader(r io.Reader) (io.ReadCloser, error) {
+	return zlib.NewReader(r)
+}
+
+// ZlibWrier wraps a writer with a new zlib.Writer.
+func ZlibWriter(w io.Writer) io.WriteCloser {
+	return zlib.NewWriter(w)
+}
+
+func NopReadWrapper(r io.Reader) (io.ReadCloser, error) {
+	return io.NopCloser(r), nil
+}
+
+func NopWriteWrapper(w io.Writer) io.WriteCloser {
+	return NopCloser(w)
+}