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/*******************************************************************************
 * Copyright 2017 Bstek
 * 
 * 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.bstek.ureport.console;

import java.util.regex.Matcher;
import java.util.regex.Pattern;

import javax.servlet.http.HttpServletRequest;

/**
 * @author Jacky.gao
 * @since 2017年10月11日
 */
public class MobileUtils {
	private static String phoneReg = "\\b(ip(hone|od)|android|opera m(ob|in)i"    
            +"|windows (phone|ce)|blackberry"    
            +"|s(ymbian|eries60|amsung)|p(laybook|alm|rofile/midp"    
            +"|laystation portable)|nokia|fennec|htc[-_]"    
            +"|mobile|up.browser|[1-4][0-9]{2}x[1-4][0-9]{2})\\b";    
	private static String tableReg = "\\b(ipad|tablet|(Nexus 7)|up.browser"    
            +"|[1-4][0-9]{2}x[1-4][0-9]{2})\\b";
	private static Pattern phonePat = Pattern.compile(phoneReg, Pattern.CASE_INSENSITIVE);
	private static Pattern tablePat = Pattern.compile(tableReg, Pattern.CASE_INSENSITIVE);
	
	public static boolean isMobile(HttpServletRequest req){
		String userAgent = req.getHeader("USER-AGENT");  
        if(userAgent==null){    
            userAgent = "";    
        }
        userAgent=userAgent.toLowerCase();
        Matcher matcherPhone = phonePat.matcher(userAgent);    
        Matcher matcherTable = tablePat.matcher(userAgent);    
        if(matcherPhone.find() || matcherTable.find()){    
            return true;    
        } else {    
            return false;    
        }    
    } 
}