@Throws(IOException::class)
    internal fun setLengths(strings: List<String>) {
      if (strings.size != valueCount) {
        invalidLengths(strings)
      }

      try {
        for (i in strings.indices) {
          lengths[i] = strings[i].toLong()
        }
      } catch (_: NumberFormatException) {
        invalidLengths(strings)
      }
    }

    // (2) "Dolphin". If we're rotating an array a of size n by a distance of d, then element a[0]
    //     ends up at a[d], which in turn ends up at a[2d], and so on until we get back to a[0].
    //     (All indices taken mod n.) If d and n are mutually prime, all elements will have been
    //     moved at that point. Otherwise, we can rotate the cycle a[1], a[1 + d], a[1 + 2d], etc,

  // If the `next` bits in `entries[i]` are 0 that means there are no further entries for the given
  // short hash. But 0 is also a valid index in `entries`, so we add 1 to these indices before
  // putting them in `table` or in `next` bits, and subtract 1 again when we need an index value.
  //
  // The elements of `keys`, `values`, and `entries` are added sequentially, so that elements 0 to

      this.a = a;
      this.b = b;
    }
  }

  /**
   * Returns a stream consisting of the results of applying the given function to the elements of
   * {@code stream} and their indices in the stream. For example,
   *
   * {@snippet :
   * mapWithIndex(
   *     Stream.of("a", "b", "c"),
   *     (e, index) -> index + ":" + e)
   * }
   *

    assertThat(actual).isEqualTo(expected)
  }

  private fun intArrayToByteArray(bytes: IntArray): ByteString {
    val data = ByteArray(bytes.size)
    for (i in bytes.indices) {
      data[i] = bytes[i].toByte()
    }
    return ByteString.of(*data)
  }

  private fun readerHeaderTableLength(): Int = hpackReader!!.dynamicTable.size

  // If the `next` bits in `entries[i]` are 0 that means there are no further entries for the given
  // short hash. But 0 is also a valid index in `entries`, so we add 1 to these indices before
  // putting them in `table` or in `next` bits, and subtract 1 again when we need an index value.
  //
  // The elements of `keys`, `values`, and `entries` are added sequentially, so that elements 0 to

  private static <T extends @Nullable Object> void slowRemoveIfForRemainingElements(
      List<T> list, Predicate<? super T> predicate, int to, int from) {
    // Here we know that:
    // * (to < from) and that both are valid indices.
    // * Everything with (index < to) should be kept.
    // * Everything with (to <= index < from) should be removed.
    // * The element with (index == from) should be kept.

	compReadAheadBuffers = 5
	// Size of each buffer.
	compReadAheadBufSize = 1 << 20
	// Pad Encrypted+Compressed files to a multiple of this.
	compPadEncrypted = 256
	// Disable compressed file indices below this size
	compMinIndexSize = 8 << 20
)

// getkeyeparator - returns the separator to be used for
// persisting on drive.
//
// - ":" is used on non-windows platforms
// - "_" is used on windows platforms

			// Only add etags if any.
			if fi.Parts[i].ETag != "" {
				ventry.ObjectV2.PartETags = make([]string, len(fi.Parts))
				break
			}
		}
		for i := range fi.Parts {
			// Only add indices if any.
			if len(fi.Parts[i].Index) > 0 {
				ventry.ObjectV2.PartIndices = make([][]byte, len(fi.Parts))
				break
			}
		}
		for i := range fi.Erasure.Distribution {

const (
	letterIdxBits = 6                    // 6 bits to represent a letter index
	letterIdxMask = 1<<letterIdxBits - 1 // All 1-bits, as many as letterIdxBits
	letterIdxMax  = 63 / letterIdxBits   // # of letter indices fitting in 63 bits
)

// Random number state.
// We generate random temporary file names so that there's a good
// chance the file doesn't exist yet.
var (
	randN  uint32
	randmu sync.Mutex
)