CheCodeFormatterOptions.java

/*******************************************************************************
 * Copyright (c) 2012-2015 Codenvy, S.A.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *   Codenvy, S.A. - initial API and implementation
 *******************************************************************************/
package org.eclipse.jdt.internal.corext.format;

import org.eclipse.jdt.core.formatter.DefaultCodeFormatterConstants;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.xml.sax.SAXException;

import javax.xml.parsers.ParserConfigurationException;
import javax.xml.parsers.SAXParser;
import javax.xml.parsers.SAXParserFactory;
import java.io.IOException;
import java.util.Map;

/**
 * @author Roman Nikitenko
 */
public class CheCodeFormatterOptions {
    private static final Logger LOG               = LoggerFactory.getLogger(CheCodeFormatterInitializer.class);
    private static final String DEFAULT_CODESTYLE = "che-codestyle-eclipse_.xml";
    private static Map<String, String> formatSettings;

    public static Map<String, String> getDefaultFormatSettings() {
        if (formatSettings != null && !formatSettings.isEmpty()) {
            return formatSettings;
        }

        formatSettings = new CheCodeFormatterOptions().getCheDefaultSettings();
        if (formatSettings != null && !formatSettings.isEmpty()) {
            return formatSettings;
        }
        return DefaultCodeFormatterConstants.getEclipseDefaultSettings();
    }

    private Map<String, String> getCheDefaultSettings() {
        SAXParserFactory factory = SAXParserFactory.newInstance();
        XMLParser parserXML = new XMLParser();
        try {
            SAXParser parser = factory.newSAXParser();
            parser.parse(getClass().getResourceAsStream(DEFAULT_CODESTYLE), parserXML);
        } catch (ParserConfigurationException | SAXException | IOException e) {
            LOG.error("It is not possible to parse file " + DEFAULT_CODESTYLE, e);
        }
        return parserXML.getSettings();
    }
}