proxyreader: use io.NopCloser
Vladimir Bauer
1 year, 10 months ago
| 68 | 68 | if rc, ok := r.(io.ReadCloser); ok { |
| 69 | 69 | return rc |
| 70 | 70 | } |
| 71 | return toNopReadCloser(r) | |
| 71 | return io.NopCloser(r) | |
| 72 | 72 | } |
| 73 | ||
| 74 | func toNopReadCloser(r io.Reader) io.ReadCloser { | |
| 75 | if _, ok := r.(io.WriterTo); ok { | |
| 76 | return nopReadCloserWriterTo{r} | |
| 77 | } | |
| 78 | return nopReadCloser{r} | |
| 79 | } | |
| 80 | ||
| 81 | type nopReadCloser struct { | |
| 82 | io.Reader | |
| 83 | } | |
| 84 | ||
| 85 | func (nopReadCloser) Close() error { return nil } | |
| 86 | ||
| 87 | type nopReadCloserWriterTo struct { | |
| 88 | io.Reader | |
| 89 | } | |
| 90 | ||
| 91 | func (nopReadCloserWriterTo) Close() error { return nil } | |
| 92 | ||
| 93 | func (c nopReadCloserWriterTo) WriteTo(w io.Writer) (int64, error) { | |
| 94 | return c.Reader.(io.WriterTo).WriteTo(w) | |
| 95 | } |