Add maven parameter to control which reports to generate

jacoco-maven-plugin.test/it/it-report-select-formats/pom.xml

@@ -0,0 +1,52 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+   Copyright (c) 2009, 2021 Mountainminds GmbH & Co. KG and Contributors
+   This program and the accompanying materials are made available under
+   the terms of the Eclipse Public License 2.0 which is available at
+   http://www.eclipse.org/legal/epl-2.0
+
+   SPDX-License-Identifier: EPL-2.0
+
+   Contributors:
+      Marc R. Hoffmann - initial API and implementation
+-->
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+  <modelVersion>4.0.0</modelVersion>
+
+  <parent>
+    <groupId>jacoco</groupId>
+    <artifactId>setup-parent</artifactId>
+    <version>1.0-SNAPSHOT</version>
+  </parent>
+
+  <artifactId>it-report-select-formats</artifactId>
+
+  <build>
+    <plugins>
+      <plugin>
+        <groupId>@project.groupId@</groupId>
+        <artifactId>jacoco-maven-plugin</artifactId>
+        <executions>
+          <execution>
+            <goals>
+              <goal>prepare-agent</goal>
+            </goals>
+          </execution>
+          <execution>
+            <id>report</id>
+            <goals>
+              <goal>report</goal>
+            </goals>
+            <configuration>
+              <formats>
+                <format>XML</format>
+                <format>CSV</format>
+              </formats>
+            </configuration>
+          </execution>
+        </executions>
+      </plugin>
+    </plugins>
+  </build>
+</project>

jacoco-maven-plugin.test/it/it-report-select-formats/src/main/java/Example.java

@@ -0,0 +1,15 @@
+/*******************************************************************************
+ * Copyright (c) 2009, 2021 Mountainminds GmbH & Co. KG and Contributors
+ * This program and the accompanying materials are made available under
+ * the terms of the Eclipse Public License 2.0 which is available at
+ * http://www.eclipse.org/legal/epl-2.0
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ *
+ * Contributors:
+ *    Marc R. Hoffmann - initial API and implementation
+ *
+ *******************************************************************************/
+public class Example {
+
+}

jacoco-maven-plugin.test/it/it-report-select-formats/src/test/java/ExampleTest.java

@@ -0,0 +1,22 @@
+/*******************************************************************************
+ * Copyright (c) 2009, 2021 Mountainminds GmbH & Co. KG and Contributors
+ * This program and the accompanying materials are made available under
+ * the terms of the Eclipse Public License 2.0 which is available at
+ * http://www.eclipse.org/legal/epl-2.0
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ *
+ * Contributors:
+ *    Marc R. Hoffmann - initial API and implementation
+ *
+ *******************************************************************************/
+import org.junit.Test;
+
+public class ExampleTest {
+
+	@Test
+	public void test() {
+		new Example();
+	}
+
+}

jacoco-maven-plugin.test/it/it-report-select-formats/verify.bsh

@@ -0,0 +1,28 @@
+/*******************************************************************************
+ * Copyright (c) 2009, 2021 Mountainminds GmbH & Co. KG and Contributors
+ * This program and the accompanying materials are made available under
+ * the terms of the Eclipse Public License 2.0 which is available at
+ * http://www.eclipse.org/legal/epl-2.0
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ *
+ * Contributors:
+ *    Marc R. Hoffmann - initial API and implementation
+ *
+ *******************************************************************************/
+import java.io.*;
+
+File htmlReportFile = new File( basedir, "target/site/jacoco/index.html" );
+if ( htmlReportFile.isFile() ) {
+    throw new RuntimeException( "Unexpected HTML report was created" );
+}
+
+File xmlReportFile = new File( basedir, "target/site/jacoco/jacoco.xml" );
+if ( !xmlReportFile.isFile() ) {
+    throw new RuntimeException( "XML report was not created" );
+}
+
+File csvReportFile = new File( basedir, "target/site/jacoco/jacoco.csv" );
+if ( !csvReportFile.isFile() ) {
+    throw new RuntimeException( "CSV report was not created" );
+}

jacoco-maven-plugin/src/org/jacoco/maven/AbstractReportMojo.java

@@ -8,10 +8,12 @@
  *
  * Contributors:
  *    Evgeny Mandrikov - initial API and implementation
+ *    troosan - add support for format selection
  *
  *******************************************************************************/
 package org.jacoco.maven;
 
+import java.io.File;
 import java.io.IOException;
 import java.util.List;
 import java.util.Locale;
@@ -39,6 +41,15 @@ public abstract class AbstractReportMojo extends AbstractMojo
 	@Parameter(property = "project.reporting.outputEncoding", defaultValue = "UTF-8")
 	String outputEncoding;
 
+	/**
+	 * A list of report formats to generate. Supported formats are HTML, XML and
+	 * CSV. Defaults to all formats if no values are given.
+	 *
+	 * @since 0.8.7
+	 */
+	@Parameter(defaultValue = "HTML,XML,CSV")
+	List<ReportFormat> formats;
+
 	/**
 	 * Name of the root node HTML report pages.
 	 *
@@ -140,6 +151,8 @@ public boolean canGenerateReport() {
 
 	abstract boolean canGenerateReportRegardingClassesDirectory();
 
+	abstract File getOutputDirectory();
+
 	public void generate(
 			@SuppressWarnings("deprecation") final org.codehaus.doxia.sink.Sink sink,
 			final Locale locale) throws MavenReportException {
@@ -186,12 +199,17 @@ private void executeReport(final Locale locale)
 		}
 	}
 
+	private void addFormatters(final ReportSupport support, final Locale locale)
+			throws IOException {
+		getOutputDirectory().mkdirs();
+		for (final ReportFormat f : formats) {
+			support.addVisitor(f.createVisitor(this, locale));
+		}
+	}
+
 	abstract void loadExecutionData(final ReportSupport support)
 			throws IOException;
 
-	abstract void addFormatters(final ReportSupport support,
-			final Locale locale) throws IOException;
-
 	abstract void createReport(final IReportGroupVisitor visitor,
 			final ReportSupport support) throws IOException;
 

jacoco-maven-plugin/src/org/jacoco/maven/ReportAggregateMojo.java

@@ -123,10 +123,8 @@ private void loadExecutionData(final ReportSupport support,
 	}
 
 	@Override
-	void addFormatters(final ReportSupport support, final Locale locale)
-			throws IOException {
-		support.addAllFormatters(outputDirectory, outputEncoding, footer,
-				locale);
+	File getOutputDirectory() {
+		return outputDirectory;
 	}
 
 	@Override

jacoco-maven-plugin/src/org/jacoco/maven/ReportFormat.java

@@ -0,0 +1,80 @@
+/*******************************************************************************
+ * Copyright (c) 2009, 2021 Mountainminds GmbH & Co. KG and Contributors
+ * This program and the accompanying materials are made available under
+ * the terms of the Eclipse Public License 2.0 which is available at
+ * http://www.eclipse.org/legal/epl-2.0
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ *
+ * Contributors:
+ *    Marc R. Hoffmann - initial API and implementation
+ *
+ *******************************************************************************/
+package org.jacoco.maven;
+
+import java.io.File;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.util.Locale;
+
+import org.jacoco.report.FileMultiReportOutput;
+import org.jacoco.report.IReportVisitor;
+import org.jacoco.report.csv.CSVFormatter;
+import org.jacoco.report.html.HTMLFormatter;
+import org.jacoco.report.xml.XMLFormatter;
+
+/**
+ * Configurable output formats for the report goals.
+ */
+public enum ReportFormat {
+
+	/**
+	 * Multi-page html report.
+	 */
+	HTML() {
+		@Override
+		IReportVisitor createVisitor(final AbstractReportMojo mojo,
+				final Locale locale) throws IOException {
+			final HTMLFormatter htmlFormatter = new HTMLFormatter();
+			htmlFormatter.setOutputEncoding(mojo.outputEncoding);
+			htmlFormatter.setLocale(locale);
+			if (mojo.footer != null) {
+				htmlFormatter.setFooterText(mojo.footer);
+			}
+			return htmlFormatter.createVisitor(
+					new FileMultiReportOutput(mojo.getOutputDirectory()));
+		}
+	},
+
+	/**
+	 * Single-file XML report.
+	 */
+	XML() {
+		@Override
+		IReportVisitor createVisitor(final AbstractReportMojo mojo,
+				final Locale locale) throws IOException {
+			final XMLFormatter xml = new XMLFormatter();
+			xml.setOutputEncoding(mojo.outputEncoding);
+			return xml.createVisitor(new FileOutputStream(
+					new File(mojo.getOutputDirectory(), "jacoco.xml")));
+		}
+	},
+
+	/**
+	 * Single-file CSV report.
+	 */
+	CSV() {
+		@Override
+		IReportVisitor createVisitor(final AbstractReportMojo mojo,
+				final Locale locale) throws IOException {
+			final CSVFormatter csv = new CSVFormatter();
+			csv.setOutputEncoding(mojo.outputEncoding);
+			return csv.createVisitor(new FileOutputStream(
+					new File(mojo.getOutputDirectory(), "jacoco.csv")));
+		}
+	};
+
+	abstract IReportVisitor createVisitor(AbstractReportMojo mojo,
+			final Locale locale) throws IOException;
+
+}

jacoco-maven-plugin/src/org/jacoco/maven/ReportITMojo.java

@@ -67,10 +67,8 @@ void loadExecutionData(final ReportSupport support) throws IOException {
 	}
 
 	@Override
-	void addFormatters(final ReportSupport support, final Locale locale)
-			throws IOException {
-		support.addAllFormatters(outputDirectory, outputEncoding, footer,
-				locale);
+	File getOutputDirectory() {
+		return outputDirectory;
 	}
 
 	@Override

jacoco-maven-plugin/src/org/jacoco/maven/ReportMojo.java

@@ -62,10 +62,8 @@ void loadExecutionData(final ReportSupport support) throws IOException {
 	}
 
 	@Override
-	void addFormatters(final ReportSupport support, final Locale locale)
-			throws IOException {
-		support.addAllFormatters(outputDirectory, outputEncoding, footer,
-				locale);
+	File getOutputDirectory() {
+		return outputDirectory;
 	}
 
 	@Override

jacoco-maven-plugin/src/org/jacoco/maven/ReportSupport.java

@@ -17,14 +17,12 @@
 
 import java.io.File;
 import java.io.FileInputStream;
-import java.io.FileOutputStream;
 import java.io.IOException;
 import java.io.InputStreamReader;
 import java.io.Reader;
 import java.util.ArrayList;
 import java.util.Collection;
 import java.util.List;
-import java.util.Locale;
 
 import org.apache.maven.plugin.logging.Log;
 import org.apache.maven.project.MavenProject;
@@ -33,17 +31,13 @@
 import org.jacoco.core.analysis.IBundleCoverage;
 import org.jacoco.core.analysis.IClassCoverage;
 import org.jacoco.core.tools.ExecFileLoader;
-import org.jacoco.report.FileMultiReportOutput;
 import org.jacoco.report.IReportGroupVisitor;
 import org.jacoco.report.IReportVisitor;
 import org.jacoco.report.ISourceFileLocator;
 import org.jacoco.report.MultiReportVisitor;
 import org.jacoco.report.check.IViolationsOutput;
 import org.jacoco.report.check.Rule;
 import org.jacoco.report.check.RulesChecker;
-import org.jacoco.report.csv.CSVFormatter;
-import org.jacoco.report.html.HTMLFormatter;
-import org.jacoco.report.xml.XMLFormatter;
 
 /**
  * Encapsulates the tasks to create reports for Maven projects. Instances are
@@ -89,38 +83,8 @@ public void loadExecutionData(final File execFile) throws IOException {
 		loader.load(execFile);
 	}
 
-	public void addXmlFormatter(final File targetfile, final String encoding)
-			throws IOException {
-		final XMLFormatter xml = new XMLFormatter();
-		xml.setOutputEncoding(encoding);
-		formatters.add(xml.createVisitor(new FileOutputStream(targetfile)));
-	}
-
-	public void addCsvFormatter(final File targetfile, final String encoding)
-			throws IOException {
-		final CSVFormatter csv = new CSVFormatter();
-		csv.setOutputEncoding(encoding);
-		formatters.add(csv.createVisitor(new FileOutputStream(targetfile)));
-	}
-
-	public void addHtmlFormatter(final File targetdir, final String encoding,
-			final String footer, final Locale locale) throws IOException {
-		final HTMLFormatter htmlFormatter = new HTMLFormatter();
-		htmlFormatter.setOutputEncoding(encoding);
-		htmlFormatter.setLocale(locale);
-		if (footer != null) {
-			htmlFormatter.setFooterText(footer);
-		}
-		formatters.add(htmlFormatter
-				.createVisitor(new FileMultiReportOutput(targetdir)));
-	}
-
-	public void addAllFormatters(final File targetdir, final String encoding,
-			final String footer, final Locale locale) throws IOException {
-		targetdir.mkdirs();
-		addXmlFormatter(new File(targetdir, "jacoco.xml"), encoding);
-		addCsvFormatter(new File(targetdir, "jacoco.csv"), encoding);
-		addHtmlFormatter(targetdir, encoding, footer, locale);
+	public void addVisitor(final IReportVisitor visitor) {
+		formatters.add(visitor);
 	}
 
 	public void addRulesChecker(final List<Rule> rules,

org.jacoco.doc/docroot/doc/changes.html

@@ -27,6 +27,9 @@ <h3>New Features</h3>
       <a href="https://github.com/jacoco/jacoco/issues/1097">#1097</a>).</li>
   <li>Experimental support for Java 17 class files
       (GitHub <a href="https://github.com/jacoco/jacoco/issues/1132">#1132</a>).</li>
+  <li>New <code>formats</code> parameter for Maven report goals to specify the
+      generated report formats. Contributed by troosan.
+      (GitHub <a href="https://github.com/jacoco/jacoco/issues/1175">#1175</a>).</li>
   <li>Branch added by the Kotlin compiler version 1.4.0 and above for "unsafe" cast
       operator is filtered out during generation of report
       (GitHub <a href="https://github.com/jacoco/jacoco/issues/1143">#1143</a>).</li>