eu.solven.cleanthat.engine.java.eclipse.config.ConfigReader Maven / Gradle / Ivy
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/*
* Copyright 2023 Benoit Lacelle - SOLVEN
*
* 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 eu.solven.cleanthat.engine.java.eclipse.config;
import java.io.IOException;
import java.io.InputStream;
import java.util.List;
import java.util.Map;
import org.apache.commons.digester3.Digester;
import org.xml.sax.SAXException;
/**
* This class reads a config file for Eclipse code formatter.
*
* @author jecki
* @author Matt Blanchette
*/
public class ConfigReader {
/**
* Read from the input and return it's configuration settings as a {@link Map}.
*
* @param input
* the input
* @return return {@link Map} with all the configurations read from the config file, or throws an exception if
* there's a problem reading the input, e.g.: invalid XML.
* @throws IOException
* Signals that an I/O exception has occurred.
* @throws SAXException
* the SAX exception
* @throws ConfigReadException
* the config read exception
*/
public Map read(InputStream input) throws IOException, SAXException, ConfigReadException {
Digester digester = new Digester();
digester.addRuleSet(new RuleSet());
Object result = digester.parse(input);
if (!(result instanceof Profiles)) {
throw new ConfigReadException("No profiles found in config file");
}
Profiles profiles = (Profiles) result;
List> list = profiles.getProfiles();
if (list.isEmpty()) {
throw new ConfigReadException("No profile in config file of kind: " + Profiles.PROFILE_KIND);
}
return list.get(0);
}
}