Vendor main dependencies.

vendor/github.com/emicklei/go-restful/compressor_pools.go

@@ -0,0 +1,63 @@
+package restful
+
+import (
+	"bytes"
+	"compress/gzip"
+	"compress/zlib"
+	"sync"
+)
+
+// GzipWriterPool is used to get reusable zippers.
+// The Get() result must be type asserted to *gzip.Writer.
+var GzipWriterPool = &sync.Pool{
+	New: func() interface{} {
+		return newGzipWriter()
+	},
+}
+
+func newGzipWriter() *gzip.Writer {
+	// create with an empty bytes writer; it will be replaced before using the gzipWriter
+	writer, err := gzip.NewWriterLevel(new(bytes.Buffer), gzip.BestSpeed)
+	if err != nil {
+		panic(err.Error())
+	}
+	return writer
+}
+
+// GzipReaderPool is used to get reusable zippers.
+// The Get() result must be type asserted to *gzip.Reader.
+var GzipReaderPool = &sync.Pool{
+	New: func() interface{} {
+		return newGzipReader()
+	},
+}
+
+func newGzipReader() *gzip.Reader {
+	// create with an empty reader (but with GZIP header); it will be replaced before using the gzipReader
+	w := GzipWriterPool.Get().(*gzip.Writer)
+	b := new(bytes.Buffer)
+	w.Reset(b)
+	w.Flush()
+	w.Close()
+	reader, err := gzip.NewReader(bytes.NewReader(b.Bytes()))
+	if err != nil {
+		panic(err.Error())
+	}
+	return reader
+}
+
+// ZlibWriterPool is used to get reusable zippers.
+// The Get() result must be type asserted to *zlib.Writer.
+var ZlibWriterPool = &sync.Pool{
+	New: func() interface{} {
+		return newZlibWriter()
+	},
+}
+
+func newZlibWriter() *zlib.Writer {
+	writer, err := zlib.NewWriterLevel(new(bytes.Buffer), gzip.BestSpeed)
+	if err != nil {
+		panic(err.Error())
+	}
+	return writer
+}