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remove html tag from xml elment

Posted on 2013-05-29
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Last Modified: 2013-05-30
Hi,
How remove any tag from xml element in XSL.
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Question by:ethar1
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8 Comments
 
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Expert Comment

by:Geert Bormans
ID: 39205936
If this prefers to your previous question...

Do you mean that you want to strip out all the escaped html tags?
well, that is a bit tricky, it requires writing some sort of XML parser in XSLT1

consider this

<p class=">abc">foo<bar</p>

pretty tricky to figure out whet is a tag in that string

I recommend that you have a second pass (new XSLT that removes the tags from inside a <p> element (and lets hope the html inside is wellformed)

Can you use XSLT2?
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Author Comment

by:ethar1
ID: 39205961
lets say can we remove string start from  &lt;br /&gt;&lt;a   till end of element?
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Expert Comment

by:Geert Bormans
ID: 39205974
if you can specify what you need to remove, this is feasable

eg.
<br />
<a href="some-uri">foo</a>
...

would you need the foo to remain in <a> ?
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Author Comment

by:ethar1
ID: 39205988
I need to remove From "<a"   to the end

Original:
description:re ayasd cdn specifgdfy wsdft you nes to resdve, sdfeasdble<a href="some-uri">foo</a>asfda asfgag



will be
description:re ayasd cdn specifgdfy wsdft you nes to resdve, sdfeasdble
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Accepted Solution

by:
Geert Bormans earned 500 total points
ID: 39206003
that is easy

so you need substring-before(., '&lt;a')

and from that you need the <br /> removed?
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Author Comment

by:ethar1
ID: 39206027
thanks this is wot I need.
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LVL 60

Expert Comment

by:Geert Bormans
ID: 39206384
The br needs to be removed recursively since it can be more than one

<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
    xmlns:atom="http://www.w3.org/2005/Atom"
    version="1.0">
    
    <xsl:template match="/rss">
        <html>
            <head/>
            <body>
                <xsl:apply-templates select="channel"/>
            </body>
        </html>
    </xsl:template>
    
    <xsl:template match="channel">
        <h1><a href="{link}"><xsl:value-of select="title"/></a></h1>
        <xsl:apply-templates select="item[position() &lt;= 5]"/>
    </xsl:template>
    
    <xsl:template match="item">
        <h3><a href="{link}"><xsl:value-of select="title"/></a></h3>
        <p><xsl:value-of select="pubDate"/></p>
        <p><xsl:apply-templates select="description"/></p>
        <xsl:if test="enclosure[contains(@type, 'image')]">
            <img src="{enclosure/url}"/>
        </xsl:if>
    </xsl:template>
    
    <xsl:template match="description">
        <xsl:variable name="pre-link-str">
            <xsl:choose>
                <xsl:when test="contains(., '&lt;a')">
                    <xsl:value-of select="substring-before(., '&lt;a')"/>
                </xsl:when>
                <xsl:otherwise>
                    <xsl:value-of select="."/>
                </xsl:otherwise>
            </xsl:choose>
        </xsl:variable>
        <xsl:call-template name="remove-br">
            <xsl:with-param name="str" select="$pre-link-str"/>
        </xsl:call-template>
        
    </xsl:template>
    
    <xsl:template name="remove-br">
        <xsl:param name="str"/>
        <xsl:choose>
            <xsl:when test="contains($str, '&lt;br')">
                <xsl:value-of select="substring-before($str, '&lt;br')"/>
                <xsl:variable name="remainder-str" select="substring-after($str, '&lt;br')"/>
                <xsl:choose>
                    <xsl:when test="starts-with(normalize-space($remainder-str), '/&gt;')">
                        <xsl:call-template name="remove-br">
                            <xsl:with-param name="str" select="substring-after($remainder-str, '/&gt;')"/>
                        </xsl:call-template>
                    </xsl:when>
                    <xsl:otherwise>
                        <xsl:call-template name="remove-br">
                            <xsl:with-param name="str" select="substring-after(substring-after($remainder-str, '&lt;/'), '&gt;')"/>
                        </xsl:call-template>
                     </xsl:otherwise>
                </xsl:choose>
            </xsl:when>
            <xsl:otherwise>
                <xsl:value-of select="$str"/>
            </xsl:otherwise>
        </xsl:choose>
    </xsl:template>
    
</xsl:stylesheet>

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Author Comment

by:ethar1
ID: 39207115
Thanks,
another question , please response.
http://www.experts-exchange.com/Hardware/Components/Q_28142696.html
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