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EclipseJdtFormatterStep.java
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EclipseJdtFormatterStep.java
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/*
* Copyright 2016-2023 DiffPlug
*
* 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 com.diffplug.spotless.extra.java;
import java.io.File;
import java.util.Properties;
import com.diffplug.spotless.FormatterFunc;
import com.diffplug.spotless.Jvm;
import com.diffplug.spotless.Provisioner;
import com.diffplug.spotless.extra.EquoBasedStepBuilder;
import dev.equo.solstice.p2.P2Model;
/** Formatter step which calls out to the Eclipse JDT formatter. */
public final class EclipseJdtFormatterStep {
// prevent direct instantiation
private EclipseJdtFormatterStep() {}
private static final String NAME = "eclipse jdt formatter";
private static final Jvm.Support<String> JVM_SUPPORT = Jvm.<String> support(NAME).add(11, "4.26").add(17, "4.29");
public static String defaultVersion() {
return JVM_SUPPORT.getRecommendedFormatterVersion();
}
public static EquoBasedStepBuilder createBuilder(Provisioner provisioner) {
return new EquoBasedStepBuilder(NAME, provisioner, defaultVersion(), EclipseJdtFormatterStep::apply) {
@Override
protected P2Model model(String version) {
var model = new P2Model();
addPlatformRepo(model, version);
model.getInstall().add("org.eclipse.jdt.core");
return model;
}
@Override
public void setVersion(String version) {
if (version.endsWith(".0")) {
String newVersion = version.substring(0, version.length() - 2);
System.err.println("Recommend replacing '" + version + "' with '" + newVersion + "' for Eclipse JDT");
version = newVersion;
}
super.setVersion(version);
}
};
}
private static FormatterFunc apply(EquoBasedStepBuilder.State state) throws Exception {
JVM_SUPPORT.assertFormatterSupported(state.getSemanticVersion());
Class<?> formatterClazz = state.getJarState().getClassLoader().loadClass("com.diffplug.spotless.extra.glue.jdt.EclipseJdtFormatterStepImpl");
var formatter = formatterClazz.getConstructor(Properties.class).newInstance(state.getPreferences());
var method = formatterClazz.getMethod("format", String.class, File.class);
FormatterFunc formatterFunc = (FormatterFunc.NeedsFile) (input, file) -> (String) method.invoke(formatter, input, file);
return JVM_SUPPORT.suggestLaterVersionOnError(state.getSemanticVersion(), formatterFunc);
}
}