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v2fly/common/io/writer.go
2016-02-06 22:28:35 +01:00

35 lines
767 B
Go

package io
import (
"io"
"github.com/v2ray/v2ray-core/common/alloc"
)
// Writer extends io.Writer with alloc.Buffer.
type Writer interface {
// 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().
func (this *AdaptiveWriter) Write(buffer *alloc.Buffer) error {
nBytes, err := this.writer.Write(buffer.Value)
if nBytes < buffer.Len() {
_, err = this.writer.Write(buffer.Value[nBytes:])
}
return err
}