samedi 9 janvier 2016

Pagedown and Angle Brackets not Cooperating

Vote count: 0

I'm trying to use Pagedown to parse markdown (containing code sections) into html.

It mostly works, but I've noticed one strange behavior. If I have this in my markdown:

`ArrayList<String> names = new ArrayList<>();`

The text that displays ends up being this:

ArrayList<string> names = new ArrayList&lt;&gt;();

Notice that the first String is lower-cased, and the second <> is converted into html entities, which are not correctly displayed since they end up inside a code block.

If I look at the markdown that Pagedown "thinks" it's supposed to process, it gets stranger:

`ArrayList<string> names = new ArrayList&lt;&gt;();`</string>

Obviously, it's treating the <String> section of the code text as an html tag, and adding a closing </string> tag. Parsing that markdown produces this html:

<code>ArrayList&lt;string&gt; names = new ArrayList&amp;lt;&amp;gt;();</code>

If I encode the angle brackets ahead of time:

`ArrayList&lt;String&gt; names = new ArrayList&lt;&gt;();`

Then Pagedown simply encodes the html entities as part of the code, which is exactly what I want it to do with the angle brackets:

 <code>ArrayList&amp;lt;String&amp;gt; names = new ArrayList&amp;lt;&amp;gt;();</code>

I just want to be able to throw markdown (containing code sections) into the Pagedown parser and have it output sanitized html. Here is what I'm currently doing:

<!DOCTYPE html>
<script type="text/javascript" src="Markdown.Converter.js"></script>
<script type="text/javascript" src="Markdown.Sanitizer.js"></script>
<script src=""></script>
    function parseMarkdown(){

        var markdown = $("#markdown").html();        

        console.log("markdown: " + markdown);

        var converter =  new Markdown.getSanitizingConverter();
            var html = converter.makeHtml(markdown);

            console.log("html: " + html);

<body onload="parseMarkdown">
<div id="markdown">
`ArrayList<String> names = new ArrayList<>();`



In real life the markdown is either coming from a database (which was written using the Pagedown editor) or from markdown files (which were written in a basic text editor). Is there an extra step I'm missing? Is the above approach a risk of bad JavaScript being run before Markdown parses it?

asked 3 mins ago

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Pagedown and Angle Brackets not Cooperating

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