content: /*
   * 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 io.airlift.compress.v3;
  
  import org.apache.hadoop.io.compress.CompressionCodec;
  
  import java.io.ByteArrayInputStream;
  import java.io.IOException;
  import java.io.InputStream;
  import java.io.UncheckedIOException;
  import java.lang.foreign.MemorySegment;
  
  public class HadoopCodecDecompressor
          implements Decompressor
  {
      private final CompressionCodec codec;
  
      public HadoopCodecDecompressor(CompressionCodec codec)
      {
          this.codec = codec;
      }
  
      @Override
      public int decompress(byte[] input, int inputOffset, int inputLength, byte[] output, int outputOffset, int maxOutputLength)
              throws MalformedInputException
      {
          try (InputStream in = codec.createInputStream(new ByteArrayInputStream(input, inputOffset, inputLength))) {
              int bytesRead = 0;
              while (bytesRead < maxOutputLength) {
                  int size = in.read(output, outputOffset + bytesRead, maxOutputLength - bytesRead);
                  if (size < 0) {
                      break;
                  }
                  bytesRead += size;
              }
  
              if (in.read() >= 0) {
                  throw new RuntimeException("All input was not consumed");
              }
  
              return bytesRead;
          }
          catch (IOException e) {
              throw new UncheckedIOException(e);
          }
      }
  
      @Override
      public int decompress(MemorySegment input, MemorySegment output)
              throws MalformedInputException
      {
          throw new UnsupportedOperationException("not yet implemented");
      }
  }
  