org.apache.daffodil.io.LimitingJavaOutputStreams.scala Maven / Gradle / Ivy

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/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF 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.apache.daffodil.io

import java.nio.charset.Charset

class LayerBoundaryMarkInsertingJavaOutputStream(jos: java.io.OutputStream, boundaryMark: String,
  charset: Charset)
  extends java.io.FilterOutputStream(jos) {

  private var closed = false

  private val boundaryMarkBytes = boundaryMark.getBytes(charset)

  override def close(): Unit = {
    if (!closed) {
      jos.write(boundaryMarkBytes)
      jos.flush()
      jos.close()
      closed = true
    }
  }

}