content: /*
   * Copyright (C) 2015 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.ahat;
  
  import com.android.ahat.heapdump.AhatSnapshot;
  import com.android.tools.perflib.heap.ProguardMap;
  import com.android.tools.perflib.heap.hprof.Hprof;
  import com.android.tools.perflib.heap.hprof.HprofRecord;
  import com.android.tools.perflib.heap.hprof.HprofStringBuilder;
  import com.android.tools.perflib.heap.io.InMemoryBuffer;
  import java.io.ByteArrayOutputStream;
  import java.io.IOException;
  import java.util.ArrayList;
  import java.util.Date;
  import java.util.List;
  
  /**
   * Class with utilities to help constructing snapshots for tests.
   */
  public class SnapshotBuilder {
  
    // Helper function to make a snapshot with id size 4 given an
    // HprofStringBuilder and list of HprofRecords
    public static AhatSnapshot makeSnapshot(HprofStringBuilder strings, List<HprofRecord> records)
      throws IOException {
      // TODO: When perflib can handle the case where strings are referred to
      // before they are defined, just add the string records to the records
      // list.
      List<HprofRecord> actualRecords = new ArrayList<HprofRecord>();
      actualRecords.addAll(strings.getStringRecords());
      actualRecords.addAll(records);
  
      Hprof hprof = new Hprof("JAVA PROFILE 1.0.3", 4, new Date(), actualRecords);
      ByteArrayOutputStream os = new ByteArrayOutputStream();
      hprof.write(os);
      InMemoryBuffer buffer = new InMemoryBuffer(os.toByteArray());
      return AhatSnapshot.fromDataBuffer(buffer, new ProguardMap());
    }
  }
  