Initial commit (code only without large binaries)

EdgeNode/internal/compressions/writer_gzip.go

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