47 lines
769 B
Go
47 lines
769 B
Go
package ioutils
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import (
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"io"
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"net/http"
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"sync"
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)
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type WriteFlusher struct {
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sync.Mutex
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w io.Writer
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flusher http.Flusher
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flushed bool
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}
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func (wf *WriteFlusher) Write(b []byte) (n int, err error) {
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wf.Lock()
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defer wf.Unlock()
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n, err = wf.w.Write(b)
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wf.flushed = true
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wf.flusher.Flush()
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return n, err
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}
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// Flush the stream immediately.
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func (wf *WriteFlusher) Flush() {
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wf.Lock()
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defer wf.Unlock()
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wf.flushed = true
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wf.flusher.Flush()
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}
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func (wf *WriteFlusher) Flushed() bool {
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wf.Lock()
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defer wf.Unlock()
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return wf.flushed
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}
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func NewWriteFlusher(w io.Writer) *WriteFlusher {
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var flusher http.Flusher
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if f, ok := w.(http.Flusher); ok {
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flusher = f
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} else {
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flusher = &NopFlusher{}
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}
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return &WriteFlusher{w: w, flusher: flusher}
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}
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