)
    assertNull(
      Punycode.encode(a1000MaxCodePoint.repeat(2)),
    )
  }

  @Test fun invalidPunycode() {
    assertNull(Punycode.decode("xn--ls8h="))
  }

  private fun testEncodeDecode(
    unicode: String,
    punycode: String,
  ) {
    assertEquals(unicode, Punycode.decode(punycode))
    assertEquals(punycode, Punycode.encode(unicode))
  }

  private fun testDecodeOnly(

    }

  fun nonAscii(encoding: Encoding) =
    apply {
      encodings[UNICODE_2] = encoding
      encodings[UNICODE_3] = encoding
      encodings[UNICODE_4] = encoding
    }

  fun test(component: Component) =
    apply {
      for ((codePoint, encoding) in encodings) {
        val codePointString = Encoding.IDENTITY.encode(codePoint)
        if (encoding == Encoding.FORBIDDEN) {

 * limitations under the License.
 */
package okhttp3.internal.idn

import okio.Buffer
import okio.ByteString.Companion.encodeUtf8

/**
 * An [RFC 3492] punycode decoder for converting ASCII to Unicode domain name labels. This is
 * intended for use in Internationalized Domain Names (IDNs).
 *
 * This class contains a Kotlin implementation of the pseudocode specified by RFC 3492. It includes

pkg testing, type InternalExample struct, Unordered bool
pkg unicode, const Version = "9.0.0"
pkg unicode, var Adlam *RangeTable
pkg unicode, var Bhaiksuki *RangeTable
pkg unicode, var Marchen *RangeTable
pkg unicode, var Newa *RangeTable
pkg unicode, var Osage *RangeTable
pkg unicode, var Prepended_Concatenation_Mark *RangeTable
pkg unicode, var Sentence_Terminal *RangeTable

pkg unicode, const Version = "15.0.0" #55079
pkg unicode, var Cypro_Minoan *RangeTable #55079
pkg unicode, var Kawi *RangeTable #55079
pkg unicode, var Nag_Mundari *RangeTable #55079
pkg unicode, var Old_Uyghur *RangeTable #55079
pkg unicode, var Tangsa *RangeTable #55079
pkg unicode, var Toto *RangeTable #55079

 *
 * This implementation's STD3 rules are configured to `UseSTD3ASCIIRules=false`. This is
 * permissive and permits the `_` character.
 *
 * [mapping table]: https://www.unicode.org/reports/tr46/#IDNA_Mapping_Table
 * [mapping step]: https://www.unicode.org/reports/tr46/#ProcessingStepMap
 */
class SimpleIdnaMappingTable internal constructor(
  internal val mappings: List<Mapping>,
) {
  /**

pkg unicode/utf16, func RuneLen(int32) int #44940...

IDN Data
========

In order to implement Nameprep (RFC 3491), OkHttp uses Unicode tables specified in Stringprep
(RFC 3454). Fragments of this RFC are dumped into the files in this directory and parsed by
`StringprepTablesReader` into a model that can be used at runtime.

This format is chosen to make it easy to validate that these tables are consistent with the RFC.

```
cd okhttp/src/test/resources/okhttp3/internal/idn/

package okhttp3.logging.internal

import java.io.EOFException
import okio.Buffer

/**
 * Returns true if the body in question probably contains human readable text. Uses a small
 * sample of code points to detect unicode control characters commonly used in binary file
 * signatures.
 */
fun Buffer.isProbablyUtf8(): Boolean {
  try {
    val prefix = Buffer()
    val byteCount = size.coerceAtMost(64)
    copyTo(prefix, 0, byteCount)

    "org.junit.platform.console.tasks.TreePrintingListener",
  ).declaredConstructors.first()
    .apply {
      isAccessible = true
    }
    .newInstance(PrintWriter(System.out), colorPalette, Theme.UNICODE) as TestExecutionListener