content: /*
   * Copyright (C) 2016 The Android Open Source Project
   *
   * 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.android.apksig.util;
  
  import java.io.IOException;
  import java.nio.ByteBuffer;
  
  /**
   * Consumer of input data which may be provided in one go or in chunks.
   */
  public interface DataSink {
  
      /**
       * Consumes the provided chunk of data.
       *
       * <p>This data sink guarantees to not hold references to the provided buffer after this method
       * terminates.
       *
       * @throws IndexOutOfBoundsException if {@code offset} or {@code length} are negative, or if
       *         {@code offset + length} is greater than {@code buf.length}.
       */
      void consume(byte[] buf, int offset, int length) throws IOException;
  
      /**
       * Consumes all remaining data in the provided buffer and advances the buffer's position
       * to the buffer's limit.
       *
       * <p>This data sink guarantees to not hold references to the provided buffer after this method
       * terminates.
       */
      void consume(ByteBuffer buf) throws IOException;
  }
  