* 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>,
) {
  /**

 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
@file:Suppress("ktlint:standard:filename")

package okhttp3.internal

import okhttp3.internal.idn.IDNA_MAPPING_TABLE
import okhttp3.internal.idn.Punycode
import okio.Buffer

/**
 * Quick and dirty pattern to differentiate IP addresses from hostnames. This is an approximation
 * of Android's private InetAddress#isNumeric API.

  return result
}

/** Returns a copy of [mappings] with adjacent ranges merged wherever possible. */
internal fun mergeAdjacentRanges(mappings: List<Mapping>): List<Mapping> {
  var index = 0
  val result = mutableListOf<Mapping>()

  while (index < mappings.size) {
    val mapping = mappings[index]
    val type = canonicalizeType(mapping.type)
    val mappedTo = mapping.mappedTo

    var unionWith: Mapping = mapping

    }
  return buildIdnaMappingTableData(table)
}

/**
 * Generate a file containing the mapping table's string literals, like this:
 *
 * ```
 * internal val IDNA_MAPPING_TABLE: IdnaMappingTable = IdnaMappingTable(
 *   sections = "...",
 *   ranges = "...",
 *   mappings = "",
 * )
 * ```
 */
fun generateMappingTableFile(data: IdnaMappingTableData): FileSpec {

    val unassigned = readCodePointSet(base / "rfc3454.A.1.txt")
    val mapping =
      MappingListCodePointMapping(
        mutableMapOf<Int, String>()
          .apply {
            putAll(readCodePointMapping(base / "rfc3454.B.1.txt").mappings)
            putAll(readCodePointMapping(base / "rfc3454.B.2.txt").mappings)
          },
      )
    val prohibitSet =
      RangeListCodePointSet(
        ranges =

 * [RFC 3491]: https://datatracker.ietf.org/doc/html/rfc3491
 */
class Stringprep(
  /** Unassigned code points. */
  val unassigned: CodePointSet,
  /** Mappings. Note table B.3 is not used in RFC 3491. */
  val mapping: CodePointMapping,
  /** Prohibited code points. */
  val prohibitSet: CodePointSet,
  /** RandALCat code points; bidi category is "R" or "AL". */
  val randalcatSet: CodePointSet,

    assertThat(
      mergeAdjacentRanges(
        listOf(
          Mapping(0x0232, 0x0232, TYPE_MAPPED, "a".encodeUtf8()),
          Mapping(0x0233, 0x0233, TYPE_VALID, ByteString.EMPTY),
          Mapping(0x0234, 0x0236, TYPE_VALID, ByteString.EMPTY),
          Mapping(0x0237, 0x0239, TYPE_VALID, ByteString.EMPTY),
          Mapping(0x023a, 0x023a, TYPE_MAPPED, "b".encodeUtf8()),
        ),
      ),
    ).containsExactly(

      |
      """.trimMargin(),
    )

    val mappings = buffer.readCodePointMappings()
    assertEquals(
      mapOf(
        // Map to nothing.
        0x180c to "",
        // Case map.
        'A'.code to "a",
        // Case map.
        'ΐ'.code to "\u03B9\u0308\u0301",
      ),
      mappings.mappings,
    )
  }

  @Test fun compareConstructedAndGeneratedCompactTables() {
    assertThat(IDNA_MAPPING_TABLE.sections).isEqualTo(compactTable.sections)
    assertThat(IDNA_MAPPING_TABLE.ranges).isEqualTo(compactTable.ranges)
    assertThat(IDNA_MAPPING_TABLE.mappings).isEqualTo(compactTable.mappings)
  }

  private fun String.map(): String {
    val buffer = Buffer()
    for (codePoint in codePoints()) {

  integrity sha512-dBVuXR082gk3jsFp7Rd/JI4kytwGHecnCoTtXFb7DB6CNHp4rg5k1bhg0nWdLGLnOV71lmDzGQaLMy8iPLY0pw==

"@jridgewell/gen-mapping@^0.3.0":
  version "0.3.1"
  resolved "https://registry.yarnpkg.com/@jridgewell/gen-mapping/-/gen-mapping-0.3.1.tgz#cf92a983c83466b8c0ce9124fadeaf09f7c66ea9"
  integrity sha512-GcHwniMlA2z+WFPWuY8lp3fsza0I8xPFMWL5+n8LYyP6PSvPrXf4+n8stDHZY2DM0zy9sVkRDy1jDI4XGzYVqg==
  dependencies: