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CheckstylePlugin.java
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CheckstylePlugin.java
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/*
* Copyright 2011 the original author or authors.
*
* 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 org.gradle.api.plugins.quality;
import com.google.common.util.concurrent.Callables;
import org.gradle.api.artifacts.Configuration;
import org.gradle.api.file.Directory;
import org.gradle.api.file.ProjectLayout;
import org.gradle.api.file.RegularFile;
import org.gradle.api.internal.ConventionMapping;
import org.gradle.api.plugins.quality.internal.AbstractCodeQualityPlugin;
import org.gradle.api.provider.Provider;
import org.gradle.api.provider.ProviderFactory;
import org.gradle.api.resources.TextResource;
import org.gradle.api.tasks.SourceSet;
import org.gradle.jvm.toolchain.JavaLauncher;
import org.gradle.jvm.toolchain.JavaToolchainService;
import org.gradle.jvm.toolchain.JavaToolchainSpec;
import org.gradle.jvm.toolchain.internal.CurrentJvmToolchainSpec;
import javax.inject.Inject;
import java.io.File;
import java.util.Map;
import java.util.concurrent.Callable;
import static org.gradle.api.internal.lambdas.SerializableLambdas.action;
/**
* Checkstyle Plugin.
*
* @see <a href="https://docs.gradle.org/current/userguide/checkstyle_plugin.html">Checkstyle plugin reference</a>
*/
public class CheckstylePlugin extends AbstractCodeQualityPlugin<Checkstyle> {
public static final String DEFAULT_CHECKSTYLE_VERSION = "8.45.1";
private static final String CONFIG_DIR_NAME = "config/checkstyle";
private CheckstyleExtension extension;
@Override
protected String getToolName() {
return "Checkstyle";
}
@Override
protected Class<Checkstyle> getTaskType() {
return Checkstyle.class;
}
@Inject
protected JavaToolchainService getToolchainService() {
throw new UnsupportedOperationException();
}
@Override
protected CodeQualityExtension createExtension() {
extension = project.getExtensions().create("checkstyle", CheckstyleExtension.class, project);
extension.setToolVersion(DEFAULT_CHECKSTYLE_VERSION);
Directory directory = project.getRootProject().getLayout().getProjectDirectory().dir(CONFIG_DIR_NAME);
extension.getConfigDirectory().convention(directory);
extension.setConfig(project.getResources().getText().fromFile(extension.getConfigDirectory().file("checkstyle.xml")
// If for whatever reason the provider above cannot be resolved, go back to default location, which we know how to ignore if missing
.orElse(directory.file("checkstyle.xml"))));
return extension;
}
@Override
protected void configureConfiguration(Configuration configuration) {
configureDefaultDependencies(configuration);
}
@Override
protected void configureTaskDefaults(Checkstyle task, final String baseName) {
Configuration configuration = project.getConfigurations().getAt(getConfigurationName());
configureTaskConventionMapping(configuration, task);
configureReportsConventionMapping(task, baseName);
configureToolchains(task);
}
private void configureDefaultDependencies(Configuration configuration) {
configuration.defaultDependencies(dependencies ->
dependencies.add(project.getDependencies().create("com.puppycrawl.tools:checkstyle:" + extension.getToolVersion()))
);
}
private void configureTaskConventionMapping(Configuration configuration, Checkstyle task) {
ConventionMapping taskMapping = task.getConventionMapping();
taskMapping.map("checkstyleClasspath", Callables.returning(configuration));
taskMapping.map("config", (Callable<TextResource>) () -> extension.getConfig());
taskMapping.map("configProperties", (Callable<Map<String, Object>>) () -> extension.getConfigProperties());
taskMapping.map("ignoreFailures", (Callable<Boolean>) () -> extension.isIgnoreFailures());
taskMapping.map("showViolations", (Callable<Boolean>) () -> extension.isShowViolations());
taskMapping.map("maxErrors", (Callable<Integer>) () -> extension.getMaxErrors());
taskMapping.map("maxWarnings", (Callable<Integer>) () -> extension.getMaxWarnings());
task.getConfigDirectory().convention(extension.getConfigDirectory());
task.getEnableExternalDtdLoad().convention(extension.getEnableExternalDtdLoad());
}
private void configureReportsConventionMapping(Checkstyle task, final String baseName) {
ProjectLayout layout = project.getLayout();
ProviderFactory providers = project.getProviders();
Provider<RegularFile> reportsDir = layout.file(providers.provider(() -> extension.getReportsDir()));
task.getReports().all(action(report -> {
report.getRequired().convention(true);
report.getOutputLocation().convention(
layout.getProjectDirectory().file(providers.provider(() -> {
String reportFileName = baseName + "." + report.getName();
return new File(reportsDir.get().getAsFile(), reportFileName).getAbsolutePath();
}))
);
}));
}
private void configureToolchains(Checkstyle task) {
Provider<JavaLauncher> javaLauncherProvider = getToolchainService().launcherFor(new CurrentJvmToolchainSpec(project.getObjects()));
task.getJavaLauncher().convention(javaLauncherProvider);
project.getPluginManager().withPlugin("java-base", p -> {
JavaToolchainSpec toolchain = getJavaPluginExtension().getToolchain();
task.getJavaLauncher().convention(getToolchainService().launcherFor(toolchain).orElse(javaLauncherProvider));
});
}
@Override
protected void configureForSourceSet(final SourceSet sourceSet, Checkstyle task) {
task.setDescription("Run Checkstyle analysis for " + sourceSet.getName() + " classes");
task.setClasspath(sourceSet.getOutput().plus(sourceSet.getCompileClasspath()));
task.setSource(sourceSet.getAllJava());
}
}