Moves files

internal/backend/utils.go

@@ -0,0 +1,47 @@
+package backend
+
+import (
+	"context"
+	"io"
+	"io/ioutil"
+	"restic"
+)
+
+// LoadAll reads all data stored in the backend for the handle.
+func LoadAll(ctx context.Context, be restic.Backend, h restic.Handle) (buf []byte, err error) {
+	rd, err := be.Load(ctx, h, 0, 0)
+	if err != nil {
+		return nil, err
+	}
+
+	defer func() {
+		_, e := io.Copy(ioutil.Discard, rd)
+		if err == nil {
+			err = e
+		}
+
+		e = rd.Close()
+		if err == nil {
+			err = e
+		}
+	}()
+
+	return ioutil.ReadAll(rd)
+}
+
+// LimitedReadCloser wraps io.LimitedReader and exposes the Close() method.
+type LimitedReadCloser struct {
+	io.ReadCloser
+	io.Reader
+}
+
+// Read reads data from the limited reader.
+func (l *LimitedReadCloser) Read(p []byte) (int, error) {
+	return l.Reader.Read(p)
+}
+
+// LimitReadCloser returns a new reader wraps r in an io.LimitReader, but also
+// exposes the Close() method.
+func LimitReadCloser(r io.ReadCloser, n int64) *LimitedReadCloser {
+	return &LimitedReadCloser{ReadCloser: r, Reader: io.LimitReader(r, n)}
+}