"fmt"
	"hash/crc32"
	"net/http"
	"strconv"
	"sync/atomic"
	"time"
)

// A message is in the format specified in
// https://docs.aws.amazon.com/AmazonS3/latest/API/images/s3select-frame-diagram-frame-overview.png
// hence the calculation is made accordingly.
func totalByteLength(headerLength, payloadLength int) int {
	return 4 + 4 + 4 + headerLength + payloadLength + 4
}

func genMessage(header, payload []byte) []byte {

func TestCheckMetaHeaders(t *testing.T) {
	signedHeadersMap := map[string][]string{
		"X-Amz-Meta-Test":      {"test"},
		"X-Amz-Meta-Extension": {"png"},
		"X-Amz-Meta-Name":      {"imagepng"},
	}
	expectedMetaTest := "test"
	expectedMetaExtension := "png"
	expectedMetaName := "imagepng"
	r, err := http.NewRequest(http.MethodPut, "http://play.min.io:9000", nil)
	if err != nil {

	// Test empty.
	_, err = obj.PutObject(context.Background(), "bucket", "minio.png", mustGetPutObjReader(t, bytes.NewBufferString(uploadContent), int64(len(uploadContent)), "", ""), opts)
	if err != nil {
		t.Fatalf("%s: <ERROR> %s", instanceType, err)
	}
	objInfo, err := obj.GetObjectInfo(context.Background(), "bucket", "minio.png", opts)
	if err != nil {
		t.Fatalf("%s: <ERROR> %s", instanceType, err)
	}

	// Some standard object extensions which we strictly dis-allow for compression.
	standardExcludeCompressExtensions = []string{".gz", ".bz2", ".rar", ".zip", ".7z", ".xz", ".mp4", ".mkv", ".mov", ".jpg", ".png", ".gif"}

	// Some standard content-types which we strictly dis-allow for compression.

				return
			}
		}
		h.ServeHTTP(w, r)
	})
}

var redirectPrefixes = map[string]struct{}{
	"favicon-16x16.png": {},
	"favicon-32x32.png": {},
	"favicon-96x96.png": {},
	"index.html":        {},
	minioReservedBucket: {},
}

// Fetch redirect location if urlPath satisfies certain
// criteria. Some special names are considered to be

	xMinIOExtract = "x-minio-extract"
)

// splitZipExtensionPath splits the S3 path to the zip file and the path inside the zip:
//
//	e.g  /path/to/archive.zip/backup-2021/myimage.png => /path/to/archive.zip, backup/myimage.png
func splitZipExtensionPath(input string) (zipPath, object string, err error) {
	idx := strings.Index(input, archivePattern)
	if idx < 0 {
		// Should never happen

	// #cgo CFLAGS: -DPNG_DEBUG=1
	// #cgo amd64 386 CFLAGS: -DX86=1
	// #cgo LDFLAGS: -lpng
	// #include <png.h>
	import "C"

Alternatively, CPPFLAGS and LDFLAGS may be obtained via the pkg-config tool
using a '#cgo pkg-config:' directive followed by the package names.
For example:

	// #cgo pkg-config: png cairo
	// #include <png.h>
	import "C"

The default pkg-config tool may be changed by setting the PKG_CONFIG environment variable.