com.effektif.workflow.impl.util.Streams Maven / Gradle / Ivy

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/*
 * Copyright 2014 Effektif GmbH.
 *
 * Licensed 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 com.effektif.workflow.impl.util;

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;


/**
 * @author Tom Baeyens
 */
public class Streams {

  public static byte[] read(InputStream inputStream) {
    try {
      ByteArrayOutputStream buffer = new ByteArrayOutputStream();
      int nRead;
      byte[] data = new byte[16384];
      while ((nRead = inputStream.read(data, 0, data.length)) != -1) {
        buffer.write(data, 0, nRead);
      }
      buffer.flush();
      return buffer.toByteArray();
    } catch (IOException e) {
      throw new RuntimeException("Couldn't read stream: "+e.getMessage(), e);
    }
  }
}