Add simplified transformGFM method to MarkdownUtils

James Moger

2014-02-28 02119875d182c4c2bb29aef75971c8de0b5f28a8

Add simplified transformGFM method to MarkdownUtils

 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;

    }

}