}
        return buf.toString();
    }

    /**
     * テキストをエンコードします。
     *
     * @param s
     *            テキスト
     * @return エンコードされたテキスト
     */
    public static String encodeText(final String s) {
        if (s == null) {
            return null;
        }
        final char[] content = s.toCharArray();
        final StringBuilder buf = new StringBuilder(s.length() + 100);

internal fun String.canonicalize(
  pos: Int = 0,
  limit: Int = length,
  encodeSet: String,
  alreadyEncoded: Boolean = false,
  strict: Boolean = false,
  plusIsSpace: Boolean = false,
  unicodeAllowed: Boolean = false,
): String {
  return canonicalizeWithCharset(
    pos = pos,
    limit = limit,
    encodeSet = encodeSet,
    alreadyEncoded = alreadyEncoded,
    strict = strict,

      ) = apply {
        names +=
          name.canonicalizeWithCharset(
            encodeSet = FORM_ENCODE_SET,
            // Plus is encoded as `%2B`, space is encoded as plus.
            plusIsSpace = false,
            charset = charset,
          )
        values +=
          value.canonicalizeWithCharset(
            encodeSet = FORM_ENCODE_SET,
            // Plus is encoded as `%2B`, space is encoded as plus.

      }

    fun username(username: String) =
      apply {
        this.encodedUsername = username.canonicalize(encodeSet = USERNAME_ENCODE_SET)
      }

    fun encodedUsername(encodedUsername: String) =
      apply {
        this.encodedUsername =
          encodedUsername.canonicalize(
            encodeSet = USERNAME_ENCODE_SET,
            alreadyEncoded = true,
          )
      }