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POXSLT replacing url in text with regex
 

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    <p>I've got an xml feed coming from Twitter which I want to transform using XSLT. What I want the xslt to do is to replace every occuring URL in an twittermessage. I've already created the following xslt template using <a href="https://stackoverflow.com/questions/1069092/xslt-replace-function-not-found">this</a> and <a href="https://stackoverflow.com/questions/4647746/use-custom-template-name-in-xslapply-templates">this</a> topic here on stackoverflow. How can I achieve this? If I use the template as below i'm getting an infinite loop but I don't see where. As soon as I comment out the call to the 'replaceAll'-template everything seem to work, but then ofcourse no content of the twittermessage gets replaced. I'm new to XSLT so every bit of help is welcome.</p> <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt; &lt;xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" &gt; &lt;xsl:output method="text" omit-xml-declaration="yes" indent="yes" encoding="utf-8" /&gt; &lt;xsl:param name="html-content-type" /&gt; &lt;xsl:variable name="urlRegex" select="8"/&gt; &lt;xsl:template match="statuses"&gt; &lt;xsl:for-each select="//status[position() &amp;lt; 2]"&gt; &lt;xsl:variable name="TwitterMessage" select="text" /&gt; &lt;xsl:call-template name="replaceAll"&gt; &lt;xsl:with-param name="text" select="$TwitterMessage"/&gt; &lt;xsl:with-param name="replace" select="De"/&gt; &lt;!--This should become an regex to replace urls, maybe something like the rule below?--&gt; &lt;xsl:with-param name="by" select="FOOOO"/&gt; &lt;!--Here I want the matching regex value to be replaced with valid html to create an href--&gt; &lt;!--&lt;xsl:value-of select="replace(text,'^http://(.*)\.com','#')"/&gt; &lt;xsl:value-of select="text"/&gt;--&gt; &lt;/xsl:call-template&gt; &lt;!--&lt;xsl:value-of select="text"/&gt;--&gt; &lt;!--&lt;xsl:apply-templates /&gt;--&gt; &lt;/xsl:for-each&gt; &lt;/xsl:template&gt; &lt;xsl:template name="replaceAll"&gt; &lt;xsl:param name="text"/&gt; &lt;xsl:param name="replace"/&gt; &lt;xsl:param name="by"/&gt; &lt;xsl:choose&gt; &lt;xsl:when test="contains($text,$replace)"&gt; &lt;xsl:value-of select="substring-before($text,$replace)"/&gt; &lt;xsl:value-of select="$by"/&gt; &lt;xsl:call-template name="replaceAll"&gt; &lt;xsl:with-param name="text" select="substring-after($text,$replace)"/&gt; &lt;xsl:with-param name="replace" select="$replace"/&gt; &lt;xsl:with-param name="by" select="$by"/&gt; &lt;/xsl:call-template&gt; &lt;/xsl:when&gt; &lt;xsl:otherwise&gt; &lt;xsl:value-of select="$text"/&gt; &lt;/xsl:otherwise&gt; &lt;/xsl:choose&gt; &lt;/xsl:template&gt; &lt;/xsl:stylesheet&gt; </code></pre> <p>EDIT: This in an example of the xml feed.</p> <pre><code>&lt;?xml version="1.0" encoding="UTF-8"?&gt; &lt;statuses type="array"&gt; &lt;status&gt; &lt;created_at&gt;Mon May 16 14:17:12 +0000 2011&lt;/created_at&gt; &lt;id&gt;10000000000000000&lt;/id&gt; &lt;text&gt;This is an message from Twitter http://bit.ly/xxxxx http://yfrog.com/xxxxx&lt;/text&gt; &lt;status&gt; </code></pre> <p>This is just the basic html twitter outputs on an url like below;</p> <pre><code>http://twitter.com/statuses/user_timeline.xml?screen_name=yourtwitterusername </code></pre> <p><strong>This text;</strong></p> <pre><code>This is an message from Twitter http://bit.ly/xxxxx http://yfrog.com/xxxxx </code></pre> <p><strong>Should be converted to;</strong></p> <pre><code>This is an message from Twitter &lt;a href="http://bit.ly/xxxxx&gt;http://bit.ly/xxxxx&lt;/a&gt; &lt;a href="http://yfrog.com/xxxxx"&gt;http://yfrog.com/xxxxx&lt;/a&gt; </code></pre>
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    1. COHave you considered that you might be using the wrong technology? XSLT is great at transforming the structure of XML, but terrible at modifying its content! For this sort of task I would use something like Linq-to-XML so that I can use C# code for making these changes.
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    2. CO@ColinE, good point! The problem here only is that i'm working with an standard CMS component providing me this data. But will consider this with the projectteam. You got any other ideas on how to solve this using the mentioned technologies?
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    3. COCould you provide a bit of your XML input?
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      1. USEmiliano Poggi
 

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