Decompressing incompressible data has no significant performance impact.

Below is a list of common files and content-types which are typically not suitable for compression.

- Extensions

 | `gz`  | (GZIP)      |
 | `bz2` | (BZIP2)     |
 | `rar` | (WinRAR)    |
 | `zip` | (ZIP)       |
 | `7z`  | (7-Zip)     |
 | `xz`  | (LZMA)      |
 | `mp4` | (MP4)       |
 | `mkv` | (MKV media) |
 | `mov` | (MOV)       |

- Content-Types

	"github.com/klauspost/compress/s2"
	"github.com/klauspost/compress/zstd"
	gzip "github.com/klauspost/pgzip"
	xioutil "github.com/minio/minio/internal/ioutil"
	"github.com/pierrec/lz4/v4"
)

// Max bzip2 concurrency across calls. 50% of GOMAXPROCS.
var bz2Limiter = pbzip2.CreateConcurrencyPool((runtime.GOMAXPROCS(0) + 1) / 2)

func detect(r *bufio.Reader) format {
	z, err := r.Peek(4)
	if err != nil {

  public static final MediaType ATOM_UTF_8 = createConstantUtf8(APPLICATION_TYPE, "atom+xml");
  public static final MediaType BZIP2 = createConstant(APPLICATION_TYPE, "x-bzip2");

  /**
   * Files in the <a href="https://www.dartlang.org/articles/embedding-in-html/">dart</a>
   * programming language.
   *
   * @since 19.0
   */

// Copyright 2009 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package tar

import (
	"bytes"
	"compress/bzip2"
	"errors"
	"fmt"
	"hash/crc32"
	"internal/obscuretestdata"
	"io"
	"maps"
	"math"
	"os"
	"path"
	"reflect"
	"slices"
	"strconv"
	"strings"
	"testing"
	"time"
)

func TestReader(t *testing.T) {

labels.facet_filetype_rtf=Rich Text
labels.facet_filetype_chm=Compiled HTML Help
labels.facet_filetype_zip=ZIP Archive
labels.facet_filetype_7z=7z Archive
labels.facet_filetype_bz=BZIP Archive
labels.facet_filetype_bz2=BZIP2 Archive
labels.facet_filetype_tar=TAR Archive
labels.facet_filetype_rar=RAR Archive
labels.facet_filetype_3gp=3gp Video
labels.facet_filetype_3g2=3g2 Video
labels.facet_filetype_avi=AVI Video

labels.facet_filetype_rtf=Rich Text
labels.facet_filetype_chm=Compiled HTML Help
labels.facet_filetype_zip=ZIP Archive
labels.facet_filetype_7z=7z Archive
labels.facet_filetype_bz=BZIP Archive
labels.facet_filetype_bz2=BZIP2 Archive
labels.facet_filetype_tar=TAR Archive
labels.facet_filetype_rar=RAR Archive
labels.facet_filetype_3gp=3gp Video
labels.facet_filetype_3g2=3g2 Video
labels.facet_filetype_avi=AVI Video

package org.elasticsearch.gradle.internal;

import org.apache.commons.compress.archivers.tar.TarArchiveEntry;
import org.apache.commons.compress.archivers.tar.TarArchiveInputStream;
import org.apache.commons.compress.compressors.bzip2.BZip2CompressorInputStream;
import org.apache.commons.compress.compressors.gzip.GzipCompressorInputStream;
import org.elasticsearch.gradle.internal.test.GradleIntegrationTestCase;
import org.gradle.api.GradleException;

application/x-ibooks+zip=ibooks\n\
text/plain=txt\n\
application/rtf=rtf\n\
application/vnd.ms-htmlhelp=chm\n\
application/zip=zip\n\
application/x-7z-comressed=7z\n\
application/x-bzip=bz\n\
application/x-bzip2=bz2\n\
application/x-tar=tar\n\
application/x-rar-compressed=rar\n\
video/3gp=3gp\n\
video/3g2=3g2\n\
video/x-msvideo=avi\n\
video/x-flv=flv\n\
video/mpeg=mpeg\n\
video/mp4=mp4\n\
video/ogv=ogv\n\

    /** The key of the message: BZIP Archive */
    public static final String LABELS_facet_filetype_bz = "{labels.facet_filetype_bz}";

    /** The key of the message: BZIP2 Archive */
    public static final String LABELS_facet_filetype_bz2 = "{labels.facet_filetype_bz2}";

    /** The key of the message: TAR Archive */

     * application/rtf=rtf<br>
     * application/vnd.ms-htmlhelp=chm<br>
     * application/zip=zip<br>
     * application/x-7z-comressed=7z<br>
     * application/x-bzip=bz<br>
     * application/x-bzip2=bz2<br>
     * application/x-tar=tar<br>
     * application/x-rar-compressed=rar<br>
     * video/3gp=3gp<br>
     * video/3g2=3g2<br>
     * video/x-msvideo=avi<br>
     * video/x-flv=flv<br>