org.bdgenomics.utils.io.ByteArrayByteAccess.scala Maven / Gradle / Ivy

Go to download
/**
 * Licensed to Big Data Genomics (BDG) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The BDG licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.bdgenomics.utils.io

import java.io.{ ByteArrayInputStream, InputStream }

class ByteArrayByteAccess(val bytes: Array[Byte]) extends ByteAccess with Serializable {

  private val inputStream = new ByteArrayInputStream(bytes)
  assert(inputStream.markSupported(), "ByteArrayInputStream doesn't support marks")

  inputStream.mark(bytes.length)

  override def length(): Long = bytes.length
  override def readByteStream(offset: Long, length: Int): InputStream = {
    inputStream.reset()
    inputStream.skip(offset)
    inputStream
  }
}