com.bstek.dorado.view.resolver.FontAwesomeLocationTransformer.java Source code

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Here is the source code for com.bstek.dorado.view.resolver.FontAwesomeLocationTransformer.java

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/*
 * This file is part of Dorado 7.x (http://dorado7.bsdn.org).
 * 
 * Copyright (c) 2002-2012 BSTEK Corp. All rights reserved.
 * 
 * This file is dual-licensed under the AGPLv3 (http://www.gnu.org/licenses/agpl-3.0.html) 
 * and BSDN commercial (http://www.bsdn.org/licenses) licenses.
 * 
 * If you are unsure which license is appropriate for your use, please contact the sales department
 * at http://www.bstek.com/contact.
 */

package com.bstek.dorado.view.resolver;

import java.util.regex.Pattern;

import javax.servlet.http.HttpServletRequest;

import org.apache.commons.lang.StringUtils;

import com.bstek.dorado.core.io.LocationTransformer;
import com.bstek.dorado.util.PathUtils;
import com.bstek.dorado.web.DoradoContext;

/**
 * @author Benny Bao (mailto:benny.bao@bstek.com)
 * @since 2014-2-21
 */
@Deprecated
public class FontAwesomeLocationTransformer implements LocationTransformer {
    private static final String MSIE = "MSIE";
    private final static String CHROME_FRAME = "chromeframe";
    private final static Pattern MSIE_VERSION_PATTERN = Pattern.compile("^.*?MSIE\\s+(\\d+).*$");
    private final static String NORMAL_DIR = "classpath:dorado/resources/icons/font-awesome";
    private final static String FAILSAFE_DIR = "classpath:dorado/resources/icons/font-awesome.deprecated";

    public String transform(String protocal, String location) {
        HttpServletRequest request = DoradoContext.getAttachedRequest();
        if (request != null) {
            String ua = request.getHeader("User-Agent");
            if (ua.indexOf(CHROME_FRAME) < 0) {
                boolean isMSIE = (ua != null && ua.indexOf(MSIE) != -1);
                if (isMSIE) {
                    String version = MSIE_VERSION_PATTERN.matcher(ua).replaceAll("$1");
                    if (StringUtils.isNotEmpty(version) && "8".compareTo(version) > 0) {
                        return PathUtils.concatPath(FAILSAFE_DIR, location.substring(protocal.length()));
                    }
                }
            }
        }
        return PathUtils.concatPath(NORMAL_DIR, location.substring(protocal.length()));
    }
}