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/*
* SonarQube
* Copyright (C) 2009-2025 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;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.Reader;
import java.util.List;
import java.util.stream.StreamSupport;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.sonar.api.batch.Phase;
import org.sonar.api.batch.fs.FilePredicates;
import org.sonar.api.batch.fs.InputFile;
import org.sonar.api.batch.fs.internal.DefaultInputFile;
import org.sonar.api.batch.sensor.SensorContext;
import org.sonar.api.batch.sensor.SensorDescriptor;
import org.sonar.api.scanner.sensor.ProjectSensor;
import org.sonar.duplications.block.Block;
import org.sonar.duplications.block.BlockChunker;
import org.sonar.duplications.java.JavaStatementBuilder;
import org.sonar.duplications.java.JavaTokenProducer;
import org.sonar.duplications.statement.Statement;
import org.sonar.duplications.statement.StatementChunker;
import org.sonar.duplications.token.TokenChunker;
import org.sonar.scanner.cpd.index.SonarCpdBlockIndex;
/**
* Special case for Java that use a dedicated block indexer.
*/
@Phase(name = Phase.Name.POST)
public class JavaCpdBlockIndexerSensor implements ProjectSensor {
private static final int BLOCK_SIZE = 10;
private static final Logger LOG = LoggerFactory.getLogger(JavaCpdBlockIndexerSensor.class);
private final SonarCpdBlockIndex index;
public JavaCpdBlockIndexerSensor(SonarCpdBlockIndex index) {
this.index = index;
}
@Override
public void describe(SensorDescriptor descriptor) {
descriptor.name("Java CPD Block Indexer")
.onlyOnLanguage("java");
}
@Override
public void execute(SensorContext context) {
FilePredicates p = context.fileSystem().predicates();
List<InputFile> sourceFiles = StreamSupport.stream(
context.fileSystem().inputFiles(
p.and(
p.hasType(InputFile.Type.MAIN),
p.hasLanguage("java")
)
).spliterator(), false)
.filter(f -> !((DefaultInputFile) f).isExcludedForDuplication())
.toList();
if (sourceFiles.isEmpty()) {
return;
}
createIndex(sourceFiles);
}
private void createIndex(Iterable<InputFile> sourceFiles) {
TokenChunker tokenChunker = JavaTokenProducer.build();
StatementChunker statementChunker = JavaStatementBuilder.build();
BlockChunker blockChunker = new BlockChunker(BLOCK_SIZE);
for (InputFile inputFile : sourceFiles) {
LOG.debug("Populating index from {}", inputFile);
String resourceEffectiveKey = inputFile.key();
List<Statement> statements;
try (InputStream is = inputFile.inputStream();
Reader reader = new InputStreamReader(is, inputFile.charset())) {
statements = statementChunker.chunk(tokenChunker.chunk(reader));
} catch (FileNotFoundException e) {
throw new IllegalStateException("Cannot find file " + inputFile.file(), e);
} catch (IOException e) {
throw new IllegalStateException("Exception handling file: " + inputFile.file(), e);
}
List<Block> blocks;
try {
blocks = blockChunker.chunk(resourceEffectiveKey, statements);
} catch (Exception e) {
throw new IllegalStateException("Cannot process file " + inputFile.file(), e);
}
index.insert(inputFile, blocks);
}
}
}
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