Add simplified transformGFM method to MarkdownUtils

James Moger

2014-02-28 02119875d182c4c2bb29aef75971c8de0b5f28a8

 src/main/java/com/gitblit/utils/MarkdownUtils.java

@@ -21,10 +21,14 @@
import java.io.IOException;

import java.io.Reader;

import java.io.StringWriter;

import java.text.MessageFormat;



import org.apache.commons.io.IOUtils;

import org.pegdown.LinkRenderer;

import org.pegdown.PegDownProcessor;



import com.gitblit.IStoredSettings;

import com.gitblit.Keys;



/**

 * Utility methods for transforming raw markdown text to html.

@@ -96,4 +100,45 @@
         }

      }

   }





   /**

    * Transforms GFM (Github Flavored Markdown) to html.

    * Gitblit does not support the complete GFM specification.

    *

    * @param input

    * @param repositoryName

    * @return html

    */

   public static String transformGFM(IStoredSettings settings, String input, String repositoryName) {

      String text = input;



      // strikethrough

      text = text.replaceAll("~~(.*)~~", "<s>$1</s>");

      text = text.replaceAll("\\{(?:-){2}(.*)(?:-){2}}", "<s>$1</s>");



      // underline

      text = text.replaceAll("\\{(?:\\+){2}(.*)(?:\\+){2}}", "<u>$1</u>");



      // strikethrough, replacement

      text = text.replaceAll("\\{~~(.*)~>(.*)~~}", "<s>$1</s><u>$2</u>");



      // highlight

      text = text.replaceAll("\\{==(.*)==}", "<span class='highlight'>$1</span>");



      String canonicalUrl = settings.getString(Keys.web.canonicalUrl, "https://localhost:8443");



      // emphasize and link mentions

      String mentionReplacement = String.format(" **<a href=\"%1s/user/$1\">@$1</a>**", canonicalUrl);

      text = text.replaceAll("\\s@([A-Za-z0-9-_]+)", mentionReplacement);



      // link commit shas

      int shaLen = settings.getInteger(Keys.web.shortCommitIdLength, 6);

      String commitPattern = MessageFormat.format("\\s([A-Fa-f0-9]'{'{0}'}')([A-Fa-f0-9]'{'{1}'}')", shaLen, 40 - shaLen);

      String commitReplacement = String.format(" <a class='commit' href='%1$s/commit?r=%2$s&h=$1$2'>$1</a>", canonicalUrl, repositoryName);

      text = text.replaceAll(commitPattern, commitReplacement);



      String html = transformMarkdown(text);

      return html;

   }

}