com.puppycrawl.tools.checkstyle.checks.javadoc.JavadocPackageCheck Maven / Gradle / Ivy
////////////////////////////////////////////////////////////////////////////////
// checkstyle: Checks Java source code for adherence to a set of rules.
// Copyright (C) 2001-2022 the original author or authors.
//
// This library 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 2.1 of the License, or (at your option) any later version.
//
// This library 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 library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
////////////////////////////////////////////////////////////////////////////////
package com.puppycrawl.tools.checkstyle.checks.javadoc;
import java.io.File;
import java.io.IOException;
import java.util.Set;
import java.util.concurrent.ConcurrentHashMap;
import com.puppycrawl.tools.checkstyle.GlobalStatefulCheck;
import com.puppycrawl.tools.checkstyle.api.AbstractFileSetCheck;
import com.puppycrawl.tools.checkstyle.api.CheckstyleException;
import com.puppycrawl.tools.checkstyle.api.FileText;
/**
*
* Checks that each Java package has a Javadoc file used for commenting.
* By default it only allows a {@code package-info.java} file,
* but can be configured to allow a {@code package.html} file.
*
*
* A violation will be reported if both files exist as this is not allowed by the Javadoc tool.
*
*
* -
* Property {@code allowLegacy} - Allow legacy {@code package.html} file to be used.
* Type is {@code boolean}.
* Default value is {@code false}.
*
* -
* Property {@code fileExtensions} - Specify the file type extension of files to process.
* Type is {@code java.lang.String[]}.
* Default value is {@code .java}.
*
*
*
* To configure the check:
*
*
* <module name="JavadocPackage"/>
*
*
* To configure the check to use legacy {@code package.html} file
* when {@code package-info.java} file is absent:
*
*
* <module name="JavadocPackage">
* <property name="allowLegacy" value="true"/>
* </module>
*
*
* Parent is {@code com.puppycrawl.tools.checkstyle.Checker}
*
*
* Violation Message Keys:
*
*
* -
* {@code javadoc.legacyPackageHtml}
*
* -
* {@code javadoc.packageInfo}
*
*
*
* @since 5.0
*/
@GlobalStatefulCheck
public class JavadocPackageCheck extends AbstractFileSetCheck {
/**
* A key is pointing to the warning message text in "messages.properties"
* file.
*/
public static final String MSG_LEGACY_PACKAGE_HTML = "javadoc.legacyPackageHtml";
/**
* A key is pointing to the warning message text in "messages.properties"
* file.
*/
public static final String MSG_PACKAGE_INFO = "javadoc.packageInfo";
/** The directories checked. */
private final Set directoriesChecked = ConcurrentHashMap.newKeySet();
/** Allow legacy {@code package.html} file to be used. */
private boolean allowLegacy;
/**
* Creates a new instance.
*/
public JavadocPackageCheck() {
// java, not html!
// The rule is: Every JAVA file should have a package.html sibling
setFileExtensions("java");
}
@Override
protected void processFiltered(File file, FileText fileText) throws CheckstyleException {
// Check if already processed directory
final File dir;
try {
dir = file.getCanonicalFile().getParentFile();
}
catch (IOException ex) {
throw new CheckstyleException(
"Exception while getting canonical path to file " + file.getPath(), ex);
}
final boolean isDirChecked = !directoriesChecked.add(dir);
if (!isDirChecked) {
// Check for the preferred file.
final File packageInfo = new File(dir, "package-info.java");
final File packageHtml = new File(dir, "package.html");
if (packageInfo.exists()) {
if (packageHtml.exists()) {
log(1, MSG_LEGACY_PACKAGE_HTML);
}
}
else if (!allowLegacy || !packageHtml.exists()) {
log(1, MSG_PACKAGE_INFO);
}
}
}
/**
* Setter to allow legacy {@code package.html} file to be used.
*
* @param allowLegacy whether to allow support.
*/
public void setAllowLegacy(boolean allowLegacy) {
this.allowLegacy = allowLegacy;
}
}