/**
* Copyright 2004-2016 Riccardo Solmi. All rights reserved.
* This file is part of the Whole Platform.
*
* The Whole Platform 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 3 of the License, or
* (at your option) any later version.
*
* The Whole Platform 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 the Whole Platform. If not, see <http://www.gnu.org/licenses/>.
*/
package org.whole.lang.javascript.codebase;
import org.whole.lang.codebase.AbstractSpecificPersistenceKit;
import org.whole.lang.codebase.IPersistenceProvider;
import org.whole.lang.javascript.reflect.JavaScriptLanguageKit;
import org.whole.lang.javascript.util.RhinoTransformerVisitor;
import org.whole.lang.model.IEntity;
import org.whole.lang.operations.PrettyPrinterOperation;
import org.whole.lang.util.StringUtils;
/**
* @author Enrico Persiani
*/
public class JavaScriptSourcePersistenceKit extends AbstractSpecificPersistenceKit {
private static class SingletonHolder {
private static final JavaScriptSourcePersistenceKit instance = new JavaScriptSourcePersistenceKit();
}
public static final JavaScriptSourcePersistenceKit instance() {
return SingletonHolder.instance;
}
private JavaScriptSourcePersistenceKit() {
super("JS", "js", JavaScriptLanguageKit.URI);
}
public boolean isMultilanguage() {
return false;
}
protected void doInitDefaultEncoding(IEntity model, IPersistenceProvider pp) throws Exception {
String encoding = getDefaultEncoding();
if (model == null)
encoding = StringUtils.encodingFromBOM(pp.getInputStream(), encoding);
pp.withDefaultEncoding(encoding);
}
protected String getDefaultEncoding() {
return "UTF-8";
}
protected IEntity doReadModel(IPersistenceProvider pp) throws Exception {
return RhinoTransformerVisitor.transform(pp);
}
protected void doWriteModel(IEntity model, IPersistenceProvider pp) throws Exception {
PrettyPrinterOperation.prettyPrint(model, pp.getOutputStream(), pp.getEncoding());
}
}