org.apache.myfaces.custom.skin.config.ConfigParser.java Source code

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Here is the source code for org.apache.myfaces.custom.skin.config.ConfigParser.java

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/*
 *  Licensed to the Apache Software Foundation (ASF) under one
 *  or more contributor license agreements.  See the NOTICE file
 *  distributed with this work for additional information
 *  regarding copyright ownership.  The ASF licenses this file
 *  to you 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 org.apache.myfaces.custom.skin.config;

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

import javax.faces.context.ExternalContext;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.parsers.SAXParserFactory;

import org.apache.commons.digester.Digester;
import org.apache.myfaces.custom.skin.context.RequestContextBean;
import org.apache.myfaces.trinidad.logging.SkinLogger;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;

/**
 *
 */
public class ConfigParser {
    /**
     *
     */
    static public RequestContextBean parseConfigFile(ExternalContext externalContext) {
        RequestContextBean bean = new RequestContextBean();

        InputStream in = externalContext.getResourceAsStream(_SKINS_CONFIG_FILE);
        if (in == null) {
            in = externalContext.getResourceAsStream(_TRINIDAD_CONFIG_FILE);
        }

        if (in != null) {
            try {
                SAXParserFactory factory = SAXParserFactory.newInstance();
                factory.setNamespaceAware(true);

                Digester digester = new Digester(factory.newSAXParser());
                digester.setValidating(false);
                digester.setNamespaceAware(true);
                digester.setUseContextClassLoader(true);
                RequestContextBean.addXmlRules(digester);

                InputSource input = new InputSource();
                input.setByteStream(in);
                input.setPublicId(_SKINS_CONFIG_FILE);
                digester.parse(input);
                bean = (RequestContextBean) digester.getRoot();
            } catch (IOException ioe) {
                _LOG.warning(ioe);
            } catch (ParserConfigurationException pce) {
                _LOG.warning(pce);
            } catch (SAXException saxe) {
                _LOG.warning(saxe);
            } finally {
                try {
                    in.close();
                } catch (IOException ioe) {
                    // Ignore
                    ;
                }
            }
        }

        return bean;
    }

    static private final String _SKINS_CONFIG_FILE = "/WEB-INF/skins-config.xml";
    static private final String _TRINIDAD_CONFIG_FILE = "/WEB-INF/trinidad-config.xml";
    static private final SkinLogger _LOG = SkinLogger.createSkinLogger(ConfigParser.class);
}