diff options
Diffstat (limited to 'pkg/tcpip/buffer/view.go')
| -rw-r--r-- | pkg/tcpip/buffer/view.go | 37 |
1 files changed, 33 insertions, 4 deletions
diff --git a/pkg/tcpip/buffer/view.go b/pkg/tcpip/buffer/view.go index 8db70a700..5dd1b1b6b 100644 --- a/pkg/tcpip/buffer/view.go +++ b/pkg/tcpip/buffer/view.go @@ -105,18 +105,18 @@ func (vv *VectorisedView) TrimFront(count int) { } // Read implements io.Reader. -func (vv *VectorisedView) Read(v View) (copied int, err error) { - count := len(v) +func (vv *VectorisedView) Read(b []byte) (copied int, err error) { + count := len(b) for count > 0 && len(vv.views) > 0 { if count < len(vv.views[0]) { vv.size -= count - copy(v[copied:], vv.views[0][:count]) + copy(b[copied:], vv.views[0][:count]) vv.views[0].TrimFront(count) copied += count return copied, nil } count -= len(vv.views[0]) - copy(v[copied:], vv.views[0]) + copy(b[copied:], vv.views[0]) copied += len(vv.views[0]) vv.removeFirst() } @@ -145,6 +145,35 @@ func (vv *VectorisedView) ReadToVV(dstVV *VectorisedView, count int) (copied int return copied } +// ReadTo reads up to count bytes from vv to dst. It also removes them from vv +// unless peek is true. +func (vv *VectorisedView) ReadTo(dst io.Writer, count int, peek bool) (int, error) { + var err error + done := 0 + for _, v := range vv.Views() { + remaining := count - done + if remaining <= 0 { + break + } + if len(v) > remaining { + v = v[:remaining] + } + + var n int + n, err = dst.Write(v) + if n > 0 { + done += n + } + if err != nil { + break + } + } + if !peek { + vv.TrimFront(done) + } + return done, err +} + // CapLength irreversibly reduces the length of the vectorised view. func (vv *VectorisedView) CapLength(length int) { if length < 0 { |