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JavaCompilerPluginConfiguration.java
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/
JavaCompilerPluginConfiguration.java
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/*
* Copyright 2012-2022 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
*
* https://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.springframework.boot.maven;
import java.util.Arrays;
import org.apache.maven.model.Plugin;
import org.apache.maven.project.MavenProject;
import org.codehaus.plexus.util.xml.Xpp3Dom;
/**
* Provides access to the Maven Java Compiler plugin configuration.
*
* @author Scott Frederick
*/
class JavaCompilerPluginConfiguration {
private final MavenProject project;
JavaCompilerPluginConfiguration(MavenProject project) {
this.project = project;
}
String getSourceMajorVersion() {
String version = getConfigurationValue("source");
if (version == null) {
version = getPropertyValue("maven.compiler.source");
}
return majorVersionFor(version);
}
String getTargetMajorVersion() {
String version = getConfigurationValue("target");
if (version == null) {
version = getPropertyValue("maven.compiler.target");
}
return majorVersionFor(version);
}
String getReleaseVersion() {
String version = getConfigurationValue("release");
if (version == null) {
version = getPropertyValue("maven.compiler.release");
}
return majorVersionFor(version);
}
private String getConfigurationValue(String propertyName) {
Plugin plugin = this.project.getPlugin("org.apache.maven.plugins:maven-compiler-plugin");
if (plugin != null) {
Object pluginConfiguration = plugin.getConfiguration();
if (pluginConfiguration instanceof Xpp3Dom dom) {
return getNodeValue(dom, propertyName);
}
}
return null;
}
private String getPropertyValue(String propertyName) {
if (this.project.getProperties().containsKey(propertyName)) {
return this.project.getProperties().get(propertyName).toString();
}
return null;
}
private String getNodeValue(Xpp3Dom dom, String... childNames) {
Xpp3Dom childNode = dom.getChild(childNames[0]);
if (childNode == null) {
return null;
}
if (childNames.length > 1) {
return getNodeValue(childNode, Arrays.copyOfRange(childNames, 1, childNames.length));
}
return childNode.getValue();
}
private String majorVersionFor(String version) {
if (version != null && version.startsWith("1.")) {
return version.substring("1.".length());
}
return version;
}
}