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POFastCGI Haskell script to make use of Pandoc text conversion
 

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    <h1>1. Motivation</h1> <p>I'm writing my own mini-wiki. I want to be able to easily convert from markdown to LATEX/HTML and vice versa. After some searching I discovered <a href="http://johnmacfarlane.net/pandoc/" rel="nofollow">Pandoc</a>, which is written in Haskell and that I could use the FastCGI module to run a Haskell program on my Apache server. </p> <h1>2. Problem/ Question</h1> <p>I'm not sure how to what protocol I should use to send my FastCGI script the input/output variables (POST/GET?) and how this is done exactly. Any ideas, suggestions, solutions?</p> <h1>3. Steps taken</h1> <h2>3.1 Attempt</h2> <p>Here is what I've done so far (based on example code). <em>Note, I have no experience in Haskell and at the moment I don't have too much time to learn the language. I'd just love to be able to use the pandoc text format conversion tool.</em></p> <pre><code>module Main ( main ) where import Control.Concurrent import Network.FastCGI import Text.Pandoc --initialize Variables/ functions fastcgiResult :: CGI CGIResult markdownToHTML:: String -&gt; String --implement conversion function markdownToHTML s = writeLaTeX defaultWriterOptions {writerReferenceLinks = True} (readMarkdown defaultParserState s) --main action fastcgiResult = do setHeader "Content-type" "text/plain" n &lt;- queryString output $ (markdownToHTML n) main :: IO () main = runFastCGIConcurrent' forkIO 10 fastcgiResult </code></pre> <p>This code reads the string after the question mark in the request url. But this is not a good solution as certain characters are omitted (e.g. '#' ) and spaces are replaced by "/20%". </p> <p>Thanks in advance.</p> <h2>3.2 Network.CGI</h2> <p><a href="http://hackage.haskell.org/packages/archive/cgi/3001.1.5.2/doc/html/Network-CGI.html" rel="nofollow">Documentation found here.</a> Under the heading "Input" there are a number of methods to get input. <strong>Which one is right for me?</strong></p> <p>Is it :</p> <blockquote> <p>Get the value of an input variable, for example from a form. If the variable has multiple values, the first one is returned. Example:</p> </blockquote> <pre><code>query &lt;- getInput "query" </code></pre> <p>So lets say I have a HTML POST form with <code>name='Joe'</code> can I grab this using getInput? And if so how do I handle the <code>Maybe String</code> type?</p>
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