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We should support io.StringWriter #67

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105 changes: 72 additions & 33 deletions nethttp/metrics-tracker.go
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Original file line number Diff line number Diff line change
Expand Up @@ -24,6 +24,12 @@ func (w *metricsTracker) Write(b []byte) (int, error) {
return size, err
}

func (w *metricsTracker) WriteString(s string) (int, error) {
size, err := io.WriteString(w.ResponseWriter, s)
w.size += size
return size, err
}

// wrappedResponseWriter returns a wrapped version of the original
// ResponseWriter and only implements the same combination of additional
// interfaces as the original. This implementation is based on
Expand All @@ -41,214 +47,247 @@ func (w *metricsTracker) wrappedResponseWriter() http.ResponseWriter {
case !i0 && !i1 && !i2 && !i3 && !i4:
return struct {
http.ResponseWriter
}{w}
io.StringWriter
}{w, w}
case !i0 && !i1 && !i2 && !i3 && i4:
return struct {
http.ResponseWriter
io.StringWriter
io.ReaderFrom
}{w, rf}
}{w, w, rf}
case !i0 && !i1 && !i2 && i3 && !i4:
return struct {
http.ResponseWriter
io.StringWriter
http.Flusher
}{w, fl}
}{w, w, fl}
case !i0 && !i1 && !i2 && i3 && i4:
return struct {
http.ResponseWriter
io.StringWriter
http.Flusher
io.ReaderFrom
}{w, fl, rf}
}{w, w, fl, rf}
case !i0 && !i1 && i2 && !i3 && !i4:
return struct {
http.ResponseWriter
io.StringWriter
http.Pusher
}{w, pu}
}{w, w, pu}
case !i0 && !i1 && i2 && !i3 && i4:
return struct {
http.ResponseWriter
io.StringWriter
http.Pusher
io.ReaderFrom
}{w, pu, rf}
}{w, w, pu, rf}
case !i0 && !i1 && i2 && i3 && !i4:
return struct {
http.ResponseWriter
io.StringWriter
http.Pusher
http.Flusher
}{w, pu, fl}
}{w, w, pu, fl}
case !i0 && !i1 && i2 && i3 && i4:
return struct {
http.ResponseWriter
io.StringWriter
http.Pusher
http.Flusher
io.ReaderFrom
}{w, pu, fl, rf}
}{w, w, pu, fl, rf}
case !i0 && i1 && !i2 && !i3 && !i4:
return struct {
http.ResponseWriter
io.StringWriter
http.CloseNotifier
}{w, cn}
}{w, w, cn}
case !i0 && i1 && !i2 && !i3 && i4:
return struct {
http.ResponseWriter
io.StringWriter
http.CloseNotifier
io.ReaderFrom
}{w, cn, rf}
}{w, w, cn, rf}
case !i0 && i1 && !i2 && i3 && !i4:
return struct {
http.ResponseWriter
io.StringWriter
http.CloseNotifier
http.Flusher
}{w, cn, fl}
}{w, w, cn, fl}
case !i0 && i1 && !i2 && i3 && i4:
return struct {
http.ResponseWriter
io.StringWriter
http.CloseNotifier
http.Flusher
io.ReaderFrom
}{w, cn, fl, rf}
}{w, w, cn, fl, rf}
case !i0 && i1 && i2 && !i3 && !i4:
return struct {
http.ResponseWriter
io.StringWriter
http.CloseNotifier
http.Pusher
}{w, cn, pu}
}{w, w, cn, pu}
case !i0 && i1 && i2 && !i3 && i4:
return struct {
http.ResponseWriter
io.StringWriter
http.CloseNotifier
http.Pusher
io.ReaderFrom
}{w, cn, pu, rf}
}{w, w, cn, pu, rf}
case !i0 && i1 && i2 && i3 && !i4:
return struct {
http.ResponseWriter
io.StringWriter
http.CloseNotifier
http.Pusher
http.Flusher
}{w, cn, pu, fl}
}{w, w, cn, pu, fl}
case !i0 && i1 && i2 && i3 && i4:
return struct {
http.ResponseWriter
io.StringWriter
http.CloseNotifier
http.Pusher
http.Flusher
io.ReaderFrom
}{w, cn, pu, fl, rf}
}{w, w, cn, pu, fl, rf}
case i0 && !i1 && !i2 && !i3 && !i4:
return struct {
http.ResponseWriter
io.StringWriter
http.Hijacker
}{w, hj}
}{w, w, hj}
case i0 && !i1 && !i2 && !i3 && i4:
return struct {
http.ResponseWriter
io.StringWriter
http.Hijacker
io.ReaderFrom
}{w, hj, rf}
}{w, w, hj, rf}
case i0 && !i1 && !i2 && i3 && !i4:
return struct {
http.ResponseWriter
io.StringWriter
http.Hijacker
http.Flusher
}{w, hj, fl}
}{w, w, hj, fl}
case i0 && !i1 && !i2 && i3 && i4:
return struct {
http.ResponseWriter
io.StringWriter
http.Hijacker
http.Flusher
io.ReaderFrom
}{w, hj, fl, rf}
}{w, w, hj, fl, rf}
case i0 && !i1 && i2 && !i3 && !i4:
return struct {
http.ResponseWriter
io.StringWriter
http.Hijacker
http.Pusher
}{w, hj, pu}
}{w, w, hj, pu}
case i0 && !i1 && i2 && !i3 && i4:
return struct {
http.ResponseWriter
io.StringWriter
http.Hijacker
http.Pusher
io.ReaderFrom
}{w, hj, pu, rf}
}{w, w, hj, pu, rf}
case i0 && !i1 && i2 && i3 && !i4:
return struct {
http.ResponseWriter
io.StringWriter
http.Hijacker
http.Pusher
http.Flusher
}{w, hj, pu, fl}
}{w, w, hj, pu, fl}
case i0 && !i1 && i2 && i3 && i4:
return struct {
http.ResponseWriter
io.StringWriter
http.Hijacker
http.Pusher
http.Flusher
io.ReaderFrom
}{w, hj, pu, fl, rf}
}{w, w, hj, pu, fl, rf}
case i0 && i1 && !i2 && !i3 && !i4:
return struct {
http.ResponseWriter
io.StringWriter
http.Hijacker
http.CloseNotifier
}{w, hj, cn}
}{w, w, hj, cn}
case i0 && i1 && !i2 && !i3 && i4:
return struct {
http.ResponseWriter
io.StringWriter
http.Hijacker
http.CloseNotifier
io.ReaderFrom
}{w, hj, cn, rf}
}{w, w, hj, cn, rf}
case i0 && i1 && !i2 && i3 && !i4:
return struct {
http.ResponseWriter
io.StringWriter
http.Hijacker
http.CloseNotifier
http.Flusher
}{w, hj, cn, fl}
}{w, w, hj, cn, fl}
case i0 && i1 && !i2 && i3 && i4:
return struct {
http.ResponseWriter
io.StringWriter
http.Hijacker
http.CloseNotifier
http.Flusher
io.ReaderFrom
}{w, hj, cn, fl, rf}
}{w, w, hj, cn, fl, rf}
case i0 && i1 && i2 && !i3 && !i4:
return struct {
http.ResponseWriter
io.StringWriter
http.Hijacker
http.CloseNotifier
http.Pusher
}{w, hj, cn, pu}
}{w, w, hj, cn, pu}
case i0 && i1 && i2 && !i3 && i4:
return struct {
http.ResponseWriter
io.StringWriter
http.Hijacker
http.CloseNotifier
http.Pusher
io.ReaderFrom
}{w, hj, cn, pu, rf}
}{w, w, hj, cn, pu, rf}
case i0 && i1 && i2 && i3 && !i4:
return struct {
http.ResponseWriter
io.StringWriter
http.Hijacker
http.CloseNotifier
http.Pusher
http.Flusher
}{w, hj, cn, pu, fl}
}{w, w, hj, cn, pu, fl}
case i0 && i1 && i2 && i3 && i4:
return struct {
http.ResponseWriter
io.StringWriter
http.Hijacker
http.CloseNotifier
http.Pusher
http.Flusher
io.ReaderFrom
}{w, hj, cn, pu, fl, rf}
}{w, w, hj, cn, pu, fl, rf}
default:
return struct {
http.ResponseWriter
}{w}
io.StringWriter
}{w, w}
}
}