请教大家一个超难的正则表达式.

Question

我有如下文本:
<ul>  
      <li><img class='parentNode'><img>
          <a href='#' name='1174' onclick=javascript:skipie('1174');>
          1
          </a>
      </li>
      <ul>
            <li><img class='parentNode'><img>
                <a href='#'  name='1175' onclick=javascript:skipie('1175');>1.1
                </a>
            </li>
            <li><img class='parentNode'><img>
                <a href='#' name='1176' onclick=javascript:skipie('1176');>1.2             
                </a>
            </li>
            <ul>
                 <li><img class='parentNode'><img>
                      <a href='#'  name='1177' onclick=javascript:skipie('1177');>1.2.1 
                      </a>
                 </li>
                 <li><img class='parentNode'><img>
                      <a href='#'  name='1178' onclick=javascript:skipie('1178');>1.2.2 
                      </a>
                 </li>
            </ul>
            <li><img class='parentNode'><img>
                 <a href='#'  name='1179' onclick=javascript:skipie('1179');>1.3
                 </a>
            </li>
     </ul>
</ul>要替换成:<ul>  
      <li><OBJECT type="text/sitemap">
          <param name="Name" value="1">
 <param name="Local" value="1174.html">
 </OBJECT>
      </li>
      <ul>
            <li><OBJECT type="text/sitemap">
                <param name="Name" value="1.1">
       <param name="Local" value="1175.html">
       </OBJECT>
            </li>
            <li><OBJECT type="text/sitemap">
                <param name="Name" value="1.2">
       <param name="Local" value="1176.html">
       </OBJECT>
            </li>
            <ul>
                 <li><OBJECT type="text/sitemap">
                     <param name="Name" value="1.2.1">
            <param name="Local" value="1177.html">
            </OBJECT>
                 </li>
                 <li><OBJECT type="text/sitemap">
                     <param name="Name" value="1.2.2">
            <param name="Local" value="1178.html">
            </OBJECT>
                 </li>
            </ul>
            <li><OBJECT type="text/sitemap">
                <param name="Name" value="1.3">
       <param name="Local" value="1179.html">
       </OBJECT>
            </li>
     </ul>
</ul>如果简洁一点的话,就是:
<img class='parentNode'><img>
<a href='#' name='1174' onclick=javascript:skipie('1174');>AAAAAA</a>
替换成:
<OBJECT type="text/sitemap">
<param name="Name" value="AAAAAA">
<param name="Local" value="1174.html">
</OBJECT>但实际情况下,UL与LI嵌套比这复杂多了.请教大家这个正则表达式怎么写.

Answer 1

试下string yourStr = ....................;
string ruleStr = @"<li>([\s\S]*?)(?<space>\s*)(<a\s+href='#'\s+name='(?<link>\d+)'\s+onclick=javascript:skipie\('(\d+)'\);>)\s*(?<chapter>[^\s]+)\s*</a>(?<space2>\s*)</li>";
string resultStr = Regex.Replace(yourStr, ruleStr,@"<li><OBJECT type=""text/sitemap"">${space}<param name=""Name"" value=""${chapter}"">${space}    <param name=""Local"" value=""${link}.html"">${space}    </OBJECT>${space2}</li>",RegexOptions.IgnoreCase);

Answer 2

string yourStr = ......;
string resultString = Regex.Replace(yourStr, "<img\\s+class=(').+?\\1>\\s*<img>(\\s*)<a\\s+href='#'\\s+name='(.+?)'\\s+onclick=javascript:skipie\\('(.+?)'\\).+?>[\\s|\\S]+?(\\d(\\.\\d)?)[\\s|\\S]+?</a>", "$2<OBJECT type=\"text/sitemap\">$2<param name=\"Name\" value=\"$5\">$2<param name=\"Local\" value=\"$3.html\">", RegexOptions.IgnoreCase);