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POWhat is the perfect Regex for doing wiki formatting (.Net)?
 

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  1. POWhat is the perfect Regex for doing wiki formatting (.Net)?
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    <p>H guys, I've got this wiki formatting algorithm which I am using at <a href="http://stacked.ra-ajax.org/" rel="nofollow noreferrer">Stacked</a> to create HTML out of "wiki syntax" and I am not really sure if the current one I am using is good enough, optimal or contains bugs since I am not really a "Regex Guru". Here is what I am currently using;</p> <pre><code>// Body is wiki content... string tmp = Body.Replace("&amp;", "&amp;amp;").Replace("&lt;", "&amp;lt;").Replace("&gt;", "&amp;gt;"); // Sanitizing carriage returns... tmp = tmp.Replace("\\r\\n", "\\n"); // Replacing dummy links... tmp = Regex.Replace( " " + tmp, "(?&lt;spaceChar&gt;\\s+)(?&lt;linkType&gt;http://|https://)(?&lt;link&gt;\\S+)", "${spaceChar}&lt;a href=\"${linkType}${link}\"" + nofollow + "&gt;${link}&lt;/a&gt;", RegexOptions.Compiled).Trim(); // Replacing wiki links tmp = Regex.Replace(tmp, "(?&lt;begin&gt;\\[{1})(?&lt;linkType&gt;http://|https://)(?&lt;link&gt;\\S+)\\s+(?&lt;content&gt;[^\\]]+)(?&lt;end&gt;[\\]]{1})", "&lt;a href=\"${linkType}${link}\"" + nofollow + "&gt;${content}&lt;/a&gt;", RegexOptions.Compiled); // Replacing bolds tmp = Regex.Replace(tmp, "(?&lt;begin&gt;\\*{1})(?&lt;content&gt;.+?)(?&lt;end&gt;\\*{1})", "&lt;strong&gt;${content}&lt;/strong&gt;", RegexOptions.Compiled); // Replacing italics tmp = Regex.Replace(tmp, "(?&lt;begin&gt;_{1})(?&lt;content&gt;.+?)(?&lt;end&gt;_{1})", "&lt;em&gt;${content}&lt;/em&gt;", RegexOptions.Compiled); // Replacing lists tmp = Regex.Replace(tmp, "(?&lt;begin&gt;\\*{1}[ ]{1})(?&lt;content&gt;.+)(?&lt;end&gt;[^*])", "&lt;li&gt;${content}&lt;/li&gt;", RegexOptions.Compiled); tmp = Regex.Replace(tmp, "(?&lt;content&gt;\\&lt;li\\&gt;{1}.+\\&lt;\\/li\\&gt;)", "&lt;ul&gt;${content}&lt;/ul&gt;", RegexOptions.Compiled); // Quoting tmp = Regex.Replace(tmp, "(?&lt;content&gt;^&amp;gt;.+$)", "&lt;blockquote&gt;${content}&lt;/blockquote&gt;", RegexOptions.Compiled | RegexOptions.Multiline).Replace("&lt;/blockquote&gt;\n&lt;blockquote&gt;", "\n"); // Paragraphs tmp = Regex.Replace(tmp, "(?&lt;content&gt;)\\n{2}", "${content}&lt;/p&gt;&lt;p&gt;", RegexOptions.Compiled); // Breaks tmp = Regex.Replace(tmp, "(?&lt;content&gt;)\\n{1}", "${content}&lt;br /&gt;", RegexOptions.Compiled); // Code tmp = Regex.Replace(tmp, "(?&lt;begin&gt;\\[code\\])(?&lt;content&gt;[^$]+)(?&lt;end&gt;\\[/code\\])", "&lt;pre class=\"code\"&gt;${content}&lt;/pre&gt;", RegexOptions.Compiled); // Now hopefully tmp will contain perfect HTML </code></pre> <p>For those who thinks it's difficult to see the code here, you can also check it out <a href="http://code.google.com/p/stacked/source/browse/trunk/WebSite/App_Code/QuizItem.cs" rel="nofollow noreferrer">here</a>...</p> <p>Here is the complete "wiki syntax";</p> <p>Syntax here:</p> <pre><code>Link; [http://x.com text] *bold* (asterisk on both sides) _italic_ (underscores on both sides) * Listitem 1 * Listitem 2 * Listitem 3 (the above is asterixes but so.com also creates lists from it) 2 x Carriage Return is opening a new paragraph 1 x Carriage Return is break (br) [code] if( YouDoThis ) YouCanWriteCode(); [/code] &gt; quote (less then operator) </code></pre> <p>If there are some "Regex gurus" who would like to review this Regex logic I'd appreciate it a lot :)</p>
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    1. COHave you found an alternative or are you staying with regex for the time being?
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