import com.google.common.annotations.GwtIncompatible;
import com.google.common.annotations.J2ktIncompatible;
import java.nio.charset.Charset;
import java.nio.charset.StandardCharsets;

/**
 * Contains constant definitions for the six standard {@link Charset} instances, which are
 * guaranteed to be supported by all Java platform implementations.
 *

  }

  @J2ktIncompatible
  @GwtIncompatible // Non-UTF-8 Charset
  public void testIso88591() {
    assertEquals(Charset.forName("ISO-8859-1"), Charsets.ISO_8859_1);
  }

  public void testUtf8() {
    assertEquals(Charset.forName("UTF-8"), Charsets.UTF_8);
  }

  @J2ktIncompatible
  @GwtIncompatible // Non-UTF-8 Charset
  public void testUtf16be() {

  val charset: Charset
    get() {
      val charset = authParams["charset"]
      if (charset != null) {
        try {
          return Charset.forName(charset)
        } catch (ignore: Exception) {
        }
      }
      return ISO_8859_1
    }

  constructor(scheme: String, realm: String) : this(scheme, singletonMap("realm", realm))

  init {
    val newAuthParams = mutableMapOf<String?, String>()

    assertThat(MediaType.parse("text/plain; charset =utf-8").charset()).hasValue(UTF_8);
    assertThat(MediaType.parse("text/plain; charset= utf-8").charset()).hasValue(UTF_8);
    assertThat(MediaType.parse("text/plain; charset = utf-8").charset()).hasValue(UTF_8);
    assertThat(MediaType.parse("text/plain;charset =utf-8").charset()).hasValue(UTF_8);
  }

  public void testGetCharset() {

      }
    };

    abstract String read(ByteSource byteSource, Charset cs) throws IOException;
  }

  @Param({"UTF-8"})
  String charsetName;

  @Param ReadStrategy strategy;

  @Param({"10", "1024", "1048576"})
  int size;

  Charset charset;
  ByteSource data;

  @BeforeExperiment
  public void setUp() {
    charset = Charset.forName(charsetName);
    StringBuilder sb = new StringBuilder();

      imports = "com.google.common.io.Files")
  public
  static void copy(File from, Charset charset, Appendable to) throws IOException {
    asCharSource(from, charset).copyTo(to);
  }

  /**
   * Appends a character sequence (such as a string) to a file using the given character set.
   *
   * @param from the character sequence to append
   * @param to the destination file

    @Override
    public Hasher putString(CharSequence input, Charset charset) {
      if (charset.equals(UTF_8)) {
        int utf16Length = input.length();
        int i = 0;

        // This loop optimizes for pure ASCII.
        while (i + 4 <= utf16Length) {
          char c0 = input.charAt(i);
          char c1 = input.charAt(i + 1);
          char c2 = input.charAt(i + 2);
          char c3 = input.charAt(i + 3);

   * {@code Charset}.
   *
   * @since 15.0
   */
  public static Funnel<CharSequence> stringFunnel(Charset charset) {
    return new StringCharsetFunnel(charset);
  }

  private static final class StringCharsetFunnel implements Funnel<CharSequence> {
    private final Charset charset;

    StringCharsetFunnel(Charset charset) {
      this.charset = Preconditions.checkNotNull(charset);
    }

   * {@code Charset}.
   *
   * @since 15.0
   */
  public static Funnel<CharSequence> stringFunnel(Charset charset) {
    return new StringCharsetFunnel(charset);
  }

  private static final class StringCharsetFunnel implements Funnel<CharSequence> {
    private final Charset charset;

    StringCharsetFunnel(Charset charset) {
      this.charset = Preconditions.checkNotNull(charset);
    }

  }

internal fun MediaType?.chooseCharset(): Pair<Charset, MediaType?> {
  var charset: Charset = Charsets.UTF_8
  var finalContentType: MediaType? = this
  if (this != null) {
    val resolvedCharset = this.charset()
    if (resolvedCharset == null) {
      charset = Charsets.UTF_8
      finalContentType = "$this; charset=utf-8".toMediaTypeOrNull()
    } else {
      charset = resolvedCharset
    }
  }