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