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/*
 * SonarQube
 * Copyright (C) 2009-2024 SonarSource SA
 * mailto:info AT sonarsource DOT com
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 3 of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 */
package org.sonar.scanner.cpd.index;

import java.util.Collection;
import java.util.HashSet;
import java.util.Iterator;
import java.util.Set;
import java.util.stream.Collectors;
import org.sonar.api.batch.fs.InputFile;
import org.sonar.api.utils.log.Logger;
import org.sonar.api.utils.log.Loggers;
import org.sonar.duplications.block.Block;
import org.sonar.duplications.block.ByteArray;
import org.sonar.duplications.index.AbstractCloneIndex;
import org.sonar.duplications.index.CloneIndex;
import org.sonar.duplications.index.PackedMemoryCloneIndex;
import org.sonar.duplications.index.PackedMemoryCloneIndex.ResourceBlocks;
import org.sonar.scanner.cpd.CpdSettings;
import org.sonar.api.batch.fs.internal.DefaultInputFile;
import org.sonar.scanner.protocol.output.FileStructure;
import org.sonar.scanner.protocol.output.ScannerReport;
import org.sonar.scanner.report.ReportPublisher;

public class SonarCpdBlockIndex extends AbstractCloneIndex {
  private static final Logger LOG = Loggers.get(SonarCpdBlockIndex.class);
  private final CloneIndex mem = new PackedMemoryCloneIndex();
  private final ReportPublisher publisher;
  // Files already tokenized
  private final Set indexedFiles = new HashSet<>();
  private final CpdSettings settings;

  public SonarCpdBlockIndex(ReportPublisher publisher, CpdSettings settings) {
    this.publisher = publisher;
    this.settings = settings;
  }

  public void insert(InputFile inputFile, Collection blocks) {
    if (settings.isCrossProjectDuplicationEnabled()) {
      int id = ((DefaultInputFile) inputFile).scannerId();
      if (publisher.getWriter().hasComponentData(FileStructure.Domain.CPD_TEXT_BLOCKS, id)) {
        throw new UnsupportedOperationException("Trying to save CPD tokens twice for the same file is not supported: " + inputFile.absolutePath());
      }
      final ScannerReport.CpdTextBlock.Builder builder = ScannerReport.CpdTextBlock.newBuilder();
      publisher.getWriter().writeCpdTextBlocks(id, blocks.stream().map(block -> {
        builder.clear();
        builder.setStartLine(block.getStartLine());
        builder.setEndLine(block.getEndLine());
        builder.setStartTokenIndex(block.getStartUnit());
        builder.setEndTokenIndex(block.getEndUnit());
        builder.setHash(block.getBlockHash().toHexString());
        return builder.build();
      }).collect(Collectors.toList()));
    }
    for (Block block : blocks) {
      mem.insert(block);
    }
    if (blocks.isEmpty()) {
      LOG.debug("Not enough content in '{}' to have CPD blocks, it will not be part of the duplication detection", inputFile.relativePath());
    }
    indexedFiles.add(inputFile);
  }

  public int noIndexedFiles() {
    return indexedFiles.size();
  }

  public boolean isIndexed(InputFile inputFile) {
    return indexedFiles.contains(inputFile);
  }

  public Collection getByInputFile(String resourceKey) {
    return mem.getByResourceId(resourceKey);
  }

  @Override
  public Collection getBySequenceHash(ByteArray hash) {
    return mem.getBySequenceHash(hash);
  }

  @Override
  public Collection getByResourceId(String resourceId) {
    throw new UnsupportedOperationException();
  }

  @Override
  public void insert(Block block) {
    throw new UnsupportedOperationException();
  }

  @Override
  public Iterator iterator() {
    return mem.iterator();
  }

  @Override
  public int noResources() {
    return mem.noResources();
  }

}




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