Question

Convert encoded string

Asked by: webtubbs

Hi,

My Xml contains encoded HTML, as in the below snippet.

How can I get this to be parsed properly to display correctly in the browser?

I have tried setting disable-output-escaping="yes", but that doesn't quite go far enough.

I'm thinking a JavaScript function is the way to go, but don't know where to start.

Cheers,

Wayne

<P>some text:</P><P> </P><P>more text  item1>item2>item3> something & something</P> 
 
...which should look like this.... 
 
some text: 
 
more text  item1>item2>item3> something & something
                                  
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Asked On
2009-05-30 at 07:46:30ID24450478
Tags

XSLT

,

XML

,

HTML

,

JavaScript

Topics

Extensible Stylesheet Language Transformation (XSLT)

,

Extensible Markup Language (XML)

,

JavaScript

Participating Experts
3
Points
500
Comments
18

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Answers

 

by: neerajsoniPosted on 2009-05-30 at 08:01:54ID: 24509188

These are the char coded forms and taken care by the browser if they appear in html source.
If you have it in xml I guess you prolly want an xslt that will transform your xml into xhtml to display data.

The rendering will take place at browser end and these chars will be displayed as you need them to.

 

by: BadotzPosted on 2009-05-30 at 09:13:57ID: 24509447

If you just want to *display* it, like an image,

document.getElementById('YOUR_DIV_ID_HERE').innerHTML = text;

will work, where "text" is your string.

If you want the browser to *interpret* it, then

document.getElementById('YOUR_DIV_ID_HERE').innerHTML = text.replace(/\>/gi, '>').replace(/\</gi, '<');

is one solution.

 

by: neuroburnPosted on 2009-05-30 at 12:44:51ID: 24510070

It sounds to me like you don't actually want to use disable-output-escaping="yes".  Without it, you should get:

<P>some text:</P><P> </P><P>more text  item1>item2>item3> something & something</P>

Which, when displayed in a browser would appear as:

some text:

more text item1>item2>item3> something & something

If that's not what you are looking for, could you paste the snippet of XSLT that is causing you problems?

 

by: webtubbsPosted on 2009-05-30 at 17:30:27ID: 24510866

If I use disable-output-escaping="yes", I get this in the browser....

<P>some text:</P><P> </P><P>more text item1>item2>item3> something & something</P>

...with the html being....

<P>some text:</P><P> </P><P>more text
            item1&amp;gt;item2&amp;gt;item3&amp;gt; something&amp; something</P>


If I use disable-output-escaping="no", I see in the browser what I posted in the code snippet above.

 

by: webtubbsPosted on 2009-05-30 at 17:40:30ID: 24510888

Bugger. The HTML with disable-output-escaping="yes" is as below.

&lt;P&gt;some text:&lt;/P&gt;&lt;P&gt; &lt;/P&gt;&lt;P&gt;more text item1&amp;gt;item2&amp;gt;item3&amp;gt; something &amp; something&lt;/P&gt;
 
The RAW data looks like this....
 
&lt;P&gt;some text:&lt;/P&gt;&lt;P&gt; &lt;/P&gt;&lt;P&gt;more text item1&amp;gt;item2&amp;gt;item3&amp;gt; something &amp; something&lt;/P&gt;
 
...which as you can see is the same. But the HTML should look like this....
 
<P>some text:</P><P> </P><P>more text item1<item2<item3< something &amp; something</P>

                                              
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by: neuroburnPosted on 2009-05-30 at 22:35:43ID: 24511517

Hi webtubbs, could you please attach the source files (xml/xsl/etc...) that is generating this output?  Preferably, just the parts that are involved?  I'm sort of guessing at what the problem might be at this point.  Thanks

 

by: webtubbsPosted on 2009-05-30 at 22:40:59ID: 24511528

No, unfortunately I can not. The associated data is outlined in my post above. I need ....

&lt;P&gt;some text:&lt;/P&gt;&lt;P&gt; &lt;/P&gt;&lt;P&gt;more text item1&amp;gt;item2&amp;gt;item3&amp;gt; something &amp; something&lt;/P&gt;
 
...to look like this in the HTML....
 
<P>some text:</P><P> </P><P>more text item1<item2<item3< something &amp; something</P>

                                              
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by: neuroburnPosted on 2009-05-30 at 23:03:48ID: 24511558

Hmm... assuming we've got all the escaping issues with experts-exchange worked out =)... I think I see the problem now--the data is already escaped for HTML once.  disable-output-escaping="yes" keeps the problem from getting worse, but isn't the complete solution.  Depending on the XSLT processor you are using, JavaScript can provide the solution.  For the MSXSL processor, you'd need something like the code below.  Other XSL processors can use the same JS, but obviously a different way to include the script.

You may need to play around with the "node.item(0).text" part depending on what you are passing into the function.

Hope this helps.

<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
  xmlns:msxsl="urn:schemas-microsoft-com:xslt"
  xmlns:js="http://localhost/mynamespace">
 
  <xsl:output method="text" encoding="US-ASCII"/>
 
  <msxsl:script implements-prefix="js"><![CDATA[
    function unescapeHtml(node) {
      var str = node.item(0).text;
      return str.replace(/&gt;/g, '<').
                 replace(/&lt;/g, '>').
                 replace(/&amp;/g, '&');
    }
  ]]></msxsl:script>
 
  ...
 
  <xsl:value-of disable-output-escaping="yes"
                select="js:unscapeHtml(//some[@xpath]/expr)"/>
  ...
 
</xsl:stylesheet>

                                              
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by: neuroburnPosted on 2009-05-30 at 23:05:36ID: 24511565

Doh!  And it would help to get the spelling consistent on "unescapeHtml".  Obviously, I haven't tested the example snippet above, but I have very similar code working.

 

by: webtubbsPosted on 2009-05-30 at 23:15:28ID: 24511575

When I try that I get this error....

    The URI http://localhost/mynamespace does not identify an external Java class

How do I overcome this? Sorry if I'm being a little daft - I only started XSLT yesterday.

Wayne

 

by: neuroburnPosted on 2009-05-30 at 23:17:26ID: 24511577

What XSLT processor are you using?

 

by: webtubbsPosted on 2009-05-30 at 23:19:07ID: 24511578

How do I find that out?

 

by: neuroburnPosted on 2009-05-30 at 23:20:50ID: 24511582

What are you using to do the XSLT conversion?  What commands are you running or UI are you using?

 

by: webtubbsPosted on 2009-05-30 at 23:24:39ID: 24511591

I'm using EditiX to create the XSLT file, if that helps.

 

by: neuroburnPosted on 2009-05-30 at 23:29:23ID: 24511599

So what generates the error message "The URI http://localhost/mynamespace does not identify an external Java class"?

The "Java" part makes me think Xalan, in which case, this guide will help:
http://xml.apache.org/xalan-j/extensions.html#ex-basic

 

by: webtubbsPosted on 2009-05-30 at 23:37:23ID: 24511619

You've lost me. The error is generated by EditiX.

 

by: neuroburnPosted on 2009-05-31 at 00:00:35ID: 24511664

Hmm... okay... let's try a different route then.  Problem is, even if it is Xalan underneath, there's a chance the JavaScript extensions aren't included.

At this point, I'd recommend seeing if XSLT 2.0 is support.  If it is then you don't need JavaScript, just need "fn:replace" calls, as below.  Change "input" below to whatever you were selecting before.

To switch to "XSLT 2.0", if it isn't already, you'll have to change version="1.0" to version="2.0" in the xsl:style-sheet element.  You may also need to tell EditiX that it is an XSLT 2.0 file--as I've never used EditiX before, you're on your own there.

I hope this works. =)

<xsl:value-of disable-output-escaping="yes"
              select="fn:replace( fn:replace( fn:replace(input, '&amp;lt;', '&lt;'), '&amp;gt;', '&gt;'), '&amp;amp;', '&amp;')"/>

                                              
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by: webtubbsPosted on 2009-05-31 at 00:33:08ID: 31586955

That's got it! Thanks for persevering with me :)

20120131-EE-VQP-002

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