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 androidx.test.espresso.web.assertion;
  
  import androidx.annotation.NonNull;
  import androidx.test.espresso.remote.Converter;
  import com.google.protobuf.ByteString;
  import java.io.IOException;
  import org.w3c.dom.Document;
  import org.xml.sax.SAXException;
  import org.xml.sax.SAXNotSupportedException;
  
  /** Converts a type {@link ByteString} into its {@link Document} representation. */
  final class ByteStringToDocumentConverter implements Converter<ByteString, Document> {
  
    private static String decompressDocument(byte[] bytes) throws IOException {
      return new String(CompressorDecompressor.decompress(bytes));
    }
  
    /**
     * Convert an object of type {@link ByteString} into its {@link Document} representation.
     *
     * @param byteString to convert into a {@link Document}
     */
    @Override
    public Document convert(@NonNull ByteString byteString) {
      try {
        return TagSoupDocumentParser.newInstance()
            .parse(decompressDocument(byteString.toByteArray()));
      } catch (IOException ioe) {
        throw new RuntimeException("Parsing document from ByteString failed!", ioe);
      } catch (SAXNotSupportedException snse) {
        throw new RuntimeException("Parsing document from ByteString failed!", snse);
      } catch (SAXException se) {
        throw new RuntimeException("Parsing document from ByteString failed!", se);
      }
    }
  }
  