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49 lines
997 B
49 lines
997 B
package io
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import (
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"io"
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"v2ray.com/core/common"
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"v2ray.com/core/common/alloc"
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)
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// Writer extends io.Writer with alloc.Buffer.
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type Writer interface {
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common.Releasable
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// Write writes an alloc.Buffer into underlying writer.
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Write(*alloc.Buffer) error
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}
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// AdaptiveWriter is a Writer that writes alloc.Buffer into underlying writer.
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type AdaptiveWriter struct {
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writer io.Writer
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}
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// NewAdaptiveWriter creates a new AdaptiveWriter.
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func NewAdaptiveWriter(writer io.Writer) *AdaptiveWriter {
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return &AdaptiveWriter{
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writer: writer,
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}
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}
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// Write implements Writer.Write(). Write() takes ownership of the given buffer.
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func (v *AdaptiveWriter) Write(buffer *alloc.Buffer) error {
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defer buffer.Release()
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for {
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nBytes, err := v.writer.Write(buffer.Bytes())
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if err != nil {
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return err
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}
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if nBytes == buffer.Len() {
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break
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}
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buffer.SliceFrom(nBytes)
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}
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return nil
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}
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// Release implements Releasable.Release().
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func (v *AdaptiveWriter) Release() {
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v.writer = nil
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}
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