1.4.5.2

EdgeNode/internal/compressions/writer_deflate.go

@@ -0,0 +1,57 @@
+// Copyright 2021 Liuxiangchao iwind.liu@gmail.com. All rights reserved.
+
+package compressions
+
+import (
+	"compress/flate"
+	"io"
+)
+
+type DeflateWriter struct {
+	BaseWriter
+
+	writer *flate.Writer
+	level  int
+}
+
+func NewDeflateWriter(writer io.Writer, level int) (Writer, error) {
+	return sharedDeflateWriterPool.Get(writer, level)
+}
+
+func newDeflateWriter(writer io.Writer) (Writer, error) {
+	var level = GenerateCompressLevel(flate.BestSpeed, flate.BestCompression)
+
+	flateWriter, err := flate.NewWriter(writer, level)
+	if err != nil {
+		return nil, err
+	}
+
+	return &DeflateWriter{
+		writer: flateWriter,
+		level:  level,
+	}, nil
+}
+
+func (this *DeflateWriter) Write(p []byte) (int, error) {
+	return this.writer.Write(p)
+}
+
+func (this *DeflateWriter) Flush() error {
+	return this.writer.Flush()
+}
+
+func (this *DeflateWriter) Reset(writer io.Writer) {
+	this.writer.Reset(writer)
+}
+
+func (this *DeflateWriter) RawClose() error {
+	return this.writer.Close()
+}
+
+func (this *DeflateWriter) Close() error {
+	return this.Finish(this)
+}
+
+func (this *DeflateWriter) Level() int {
+	return this.level
+}