import okhttp3.CompressionInterceptor
import okio.BufferedSource
import okio.Source

/**
 * Support for Zstandard encoding. Use via the [CompressionInterceptor].
 */
object Zstd : CompressionInterceptor.DecompressionAlgorithm {
  override val encoding: String get() = "zstd"

  override fun decompress(compressedSource: BufferedSource): Source = compressedSource.zstdDecompress()

OkHttp may add headers that are absent from the original request, including `Content-Length`, `Transfer-Encoding`, `User-Agent`, `Host`, `Connection`, and `Content-Type`. It will add an `Accept-Encoding` header for transparent response compression unless the header is already present. If you’ve got cookies, OkHttp will add a `Cookie` header with them.

// along with this program.  If not, see <http://www.gnu.org/licenses/>.

package cmd

import (
	"crypto/md5"
	"encoding/hex"

	"github.com/minio/minio/internal/hash/sha256"
)

// getSHA256Hash returns SHA-256 hash in hex encoding of given data.
func getSHA256Hash(data []byte) string {
	return hex.EncodeToString(getSHA256Sum(data))
}

// getSHA256Hash returns SHA-256 sum of given data.

     *
     * @param contents
     *            The content. Must not be {@literal null}.
     * @param encoding
     *            The encoding. If {@literal null}, the platform's default encoding will be used.
     * @return {@link InputStream}
     */
    public static InputStream getContentsAsStream(final String contents, final String encoding) {

// must be considered UTF-8 encoding (i.e., not compatible with CP-437, ASCII,
// or any other common encoding).
func detectUTF8(s string) (valid, require bool) {
	for i := 0; i < len(s); {
		r, size := utf8.DecodeRuneInString(s[i:])
		i += size
		// Officially, ZIP uses CP-437, but many readers use the system's
		// local character encoding. Most encoding are compatible with a large

	// Add the meta-uuid string, set to 1234
	uuidConditionStr := fmt.Sprintf(`["eq", "$x-amz-meta-uuid", "%s"]`, "1234")
	// Add the content-encoding string, set to gzip.
	contentEncodingConditionStr := fmt.Sprintf(`["eq", "$content-encoding", "%s"]`, "gzip")

	// Combine all conditions into one string.
	conditionStr := fmt.Sprintf(`"conditions":[%s, %s, %s, %s, %s, %s, %s, %s]`, bucketConditionStr,

				"start-after":        []string{"start-after"},
				"delimiter":          []string{SlashSeparator},
				"fetch-owner":        []string{"true"},
				"max-keys":           []string{"100"},
				"encoding-type":      []string{"gzip"},
			},
			prefix:       "photos/",
			token:        "token",
			startAfter:   "start-after",
			delimiter:    SlashSeparator,
			fetchOwner:   true,
			maxKeys:      100,

		},
		{
			name:    "unknown key Content-Encoding is error as it does not appear in policy",
			fv:      defaultFormVals.Clone().Set(http.CanonicalHeaderKey(xhttp.ContentEncoding), "encoding-val"),
			wantErr: `Each form field that you specify in a form must appear in the list of policy conditions. "Content-Encoding" not specified in the policy.`,
		},
		{
			name:    "many bucket values",

//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.

package cmd

import (
	"bufio"
	"context"
	"encoding/binary"
	"encoding/hex"
	"errors"
	"fmt"
	"io"
	"net/http"
	"os/user"
	"path"
	"runtime/debug"
	"strconv"
	"strings"
	"sync"
	"time"

	"github.com/minio/minio/internal/bpool"

   * href="https://url.spec.whatwg.org/#application-x-www-form-urlencoded-percent-encode-set">URL
   * form parameter names and values</a>. Escaping is performed with the UTF-8 character encoding.
   * The caller is responsible for <a
   * href="https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#multipart-form-data">replacing