com.htmlhifive.tools.jslint.engine.option.xml.JaxbUtil.java Source code

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Here is the source code for com.htmlhifive.tools.jslint.engine.option.xml.JaxbUtil.java

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/*
 * Copyright (C) 2012 NS Solutions Corporation
 *
 * 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.htmlhifive.tools.jslint.engine.option.xml;

import java.io.IOException;
import java.io.InputStream;
import java.io.StringWriter;

import javax.xml.bind.JAXBContext;
import javax.xml.bind.JAXBException;
import javax.xml.bind.Marshaller;
import javax.xml.bind.Unmarshaller;

import org.apache.commons.io.IOUtils;
import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.runtime.CoreException;

import com.htmlhifive.tools.jslint.logger.JSLintPluginLogger;
import com.htmlhifive.tools.jslint.logger.JSLintPluginLoggerFactory;
import com.htmlhifive.tools.jslint.messages.Messages;

/**
 * @author miyauchi
 * 
 */
public final class JaxbUtil {

    /**
     * .
     */
    private static JSLintPluginLogger logger = JSLintPluginLoggerFactory.getLogger(JaxbUtil.class);

    /**
     * JAXBContext.
     */
    private static JAXBContext jc;

    static {
        try {
            jc = JAXBContext.newInstance(JsCheckOption.class);
        } catch (JAXBException e) {
            // ignore
        }
    }

    /**
     * JsCheckOptionsxml????.
     * 
     * 
     * @param checkOptions .
     * @param output .
     */
    public static void saveJsCheckOption(JsCheckOption checkOptions, IFile output) {
        try {
            Marshaller marshall = jc.createMarshaller();
            marshall.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, Boolean.valueOf(true));
            StringWriter writer = new StringWriter();
            marshall.marshal(checkOptions, writer);
            if (output.exists()) {
                output.setContents(IOUtils.toInputStream(writer.toString(), "UTF-8"), IResource.FORCE, null);
            } else {
                output.create(IOUtils.toInputStream(writer.toString(), "UTF-8"), true, null);
            }
            output.refreshLocal(IResource.DEPTH_ONE, null);
        } catch (JAXBException e) {
            logger.put(Messages.EM0006, e, output.getName());
        } catch (CoreException e) {
            logger.put(Messages.EM0100, e);
        } catch (IOException e) {
            logger.put(Messages.EM0006, e, output.getName());
        }
    }

    /**
     * xml?.
     * 
     * @param is ?inputStream
     * @return ??.
     */
    public static JsCheckOption readJsCheckOption(InputStream is) {
        try {
            Unmarshaller um = jc.createUnmarshaller();
            return (JsCheckOption) um.unmarshal(is);
        } catch (JAXBException e) {
            logger.put(Messages.EM0100, e);
            return null;
        }
    }

    /**
     * .
     */
    private JaxbUtil() {
        // ignore
    }

}