scodec.bits.ByteVectorCrossPlatform.scala Maven / Gradle / Ivy
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/*
* Copyright (c) 2013, Scodec
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* 3. Neither the name of the copyright holder nor the names of its contributors
* may be used to endorse or promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package scodec.bits
import scala.scalajs.js.typedarray.{ArrayBuffer, Int8Array, Uint8Array}
import scala.scalajs.js.typedarray.TypedArrayBuffer
import scala.scalajs.js.typedarray.TypedArrayBufferOps._
private[bits] trait ByteVectorCrossPlatform { self: ByteVector =>
import ByteVector._
def copyToUint8Array(dest: Uint8Array, start: Int): Unit =
copyToUint8Array(dest, start, 0, toIntSize(size))
def copyToUint8Array(dest: Uint8Array, start: Int, offset: Long, size: Int): Unit =
copyToJSArrayBuffer(dest.buffer, start + dest.byteOffset, offset, dest.byteLength.min(size))
def toUint8Array: Uint8Array = new Uint8Array(toJSArrayBuffer)
def copyToJSArrayBuffer(dest: ArrayBuffer, start: Int): Unit =
copyToJSArrayBuffer(dest, start, 0, toIntSize(size))
def copyToJSArrayBuffer(dest: ArrayBuffer, start: Int, offset: Long, size: Int): Unit = {
var i = 0
val n = dest.byteLength.min(size)
val out = new Int8Array(dest)
while (i < n) {
out(start + i) = self(offset + i)
i += 1
}
}
def toJSArrayBuffer: ArrayBuffer = this match {
case Chunk(v) =>
val bb = v.asByteBuffer
if (bb.hasArrayBuffer())
bb.arrayBuffer()
else {
val ab = new ArrayBuffer(bb.remaining())
TypedArrayBuffer.wrap(ab).put(bb)
ab
}
case _ =>
val dest = new ArrayBuffer(toIntSize(size))
self.copyToJSArrayBuffer(dest, 0)
dest
}
}