feat:support zstd compress and uncompressed (#1701)

* feat:support zstd compress and uncompressed

* fix:real & stackless write using different pool to avoid get stackless.writer

* fix:zstd normalize compress level

* Change empty string checks to be more idiomatic (#1684)

* chore:lint fix and rebase with master

* chore:remove 1.18 test & upgrade compress version

* fix:error default compress level

* Fix lint

---------

Co-authored-by: Erik Dubbelboer <erik@dubbelboer.com>

1 files changed, 7 insertions, 2 deletions

diff --git a/server.go b/server.go
index e3593cd..426351b 100644
--- a/server.go
+++ b/server.go
@@ -523,10 +523,13 @@ func CompressHandler(h RequestHandler) RequestHandler {
 func CompressHandlerLevel(h RequestHandler, level int) RequestHandler {
 	return func(ctx *RequestCtx) {
 		h(ctx)
-		if ctx.Request.Header.HasAcceptEncodingBytes(strGzip) {
+		switch {
+		case ctx.Request.Header.HasAcceptEncodingBytes(strGzip):
 			ctx.Response.gzipBody(level) //nolint:errcheck
-		} else if ctx.Request.Header.HasAcceptEncodingBytes(strDeflate) {
+		case ctx.Request.Header.HasAcceptEncodingBytes(strDeflate):
 			ctx.Response.deflateBody(level) //nolint:errcheck
+		case ctx.Request.Header.HasAcceptEncodingBytes(strZstd):
+			ctx.Response.zstdBody(level) //nolint:errcheck
 		}
 	}
 }
@@ -559,6 +562,8 @@ func CompressHandlerBrotliLevel(h RequestHandler, brotliLevel, otherLevel int) R
 			ctx.Response.gzipBody(otherLevel) //nolint:errcheck
 		case ctx.Request.Header.HasAcceptEncodingBytes(strDeflate):
 			ctx.Response.deflateBody(otherLevel) //nolint:errcheck
+		case ctx.Request.Header.HasAcceptEncodingBytes(strZstd):
+			ctx.Response.zstdBody(otherLevel) //nolint:errcheck
 		}
 	}
 }