regutils.java

一个专门用来快速开发网站的框架

package com.common.ubb;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.oro.text.regex.PatternCompiler;
import org.apache.oro.text.regex.PatternMatcher;
import org.apache.oro.text.regex.Perl5Compiler;
import org.apache.oro.text.regex.Perl5Matcher;
import org.apache.oro.text.regex.Perl5Substitution;
import org.apache.oro.text.regex.Util;

/**
 * 专用于方便使用正则表达式的工具类
 *
 * @author magician
 * @version 1.0
 */
public class RegUtils
{
    //~ Static fields/initializers -----------------------------------------------------------------

    private static final Log logger = LogFactory.getLog(RegUtils.class);

    /**
     * 基于ORO的正则分析
     */
    private static final PatternCompiler compiler = new Perl5Compiler();
    private static final PatternMatcher matcher = new Perl5Matcher();

    //~ Constructors -------------------------------------------------------------------------------

    private RegUtils()
    {
    }

    //~ Methods ------------------------------------------------------------------------------------

    public static String substitute(String[] patterns,String[] replace,String[] tag,String str,
                                    int len)
    {
        org.apache.oro.text.regex.Pattern pattern = null;

        try
        {
            //通过正则表达式分析给定字符串
            for (int i = 0; i < len; i++)
            {
				//要包含相应的标签才会去匹配
                if (str.indexOf(tag[i]) != -1)
                {
                    if (logger.isDebugEnabled())
                    {
                        logger.debug("find pattern : " + patterns[i]);
                    }

                    pattern = compiler.compile(patterns[i]);
                    str = Util.substitute(matcher,pattern,
                                          new Perl5Substitution(replace[i],
                                          Perl5Substitution.INTERPOLATE_ALL),
                                          str,Util.SUBSTITUTE_ALL);
                }
            }
        }
         catch (Exception e)
        {
            logger.error(e);
        }

        return str;
    }

    public static String substitute(String patter,String replace,String tag,String str)
    {
        org.apache.oro.text.regex.Pattern pattern = null;

        try
        {
            //通过正则表达式分析给定字符串
            if (str.indexOf(tag) != -1)
            {
                pattern = compiler.compile(patter);
                str = Util.substitute(matcher,pattern,
                                      new Perl5Substitution(replace,
                                                            Perl5Substitution.INTERPOLATE_ALL),str,
                                      Util.SUBSTITUTE_ALL);
            }
        }
         catch (Exception e)
        {
            logger.error(e);
        }

        return str;
    }
}