There have been problems with the podcast feed for "mintCast",
apparently as a result of a bug in Wordpress. The feed contains
multiple "enclosure" tags containing the same audio over and over
again. While the mintCast hosts are looking for a fix I would like to
find a local work-around.
I have also encountered a problem with the "Pod Delusion Extra" feed
which contains multiple enclosures in some episodes. Unlike the
"mintCast" example I don't want to lose these enclosures but want to
find a way of repackaging them into individual episodes.
These problems affect some podcatchers, the modified Bashpodder I use
being amongst them. To counteract this problem I have written two
short Perl scripts to copy and clean each feed before submitting it to
my podcatcher.
Comment #1 posted on 2013-10-25 16:40:37 by Ken Fallon
There is another way
While there usually is another way with perl, this time there is another way with the xslt. This is the xpath will select only the @type where the string is set to "audio/ogg" and then only display the first one.
<?xml version="1.0"?>
<xsl:stylesheet xmlns:xsl="https://www.w3.org/1999/XSL/Transform" xmlns:exslt="https://exslt.org/common" xmlns:content="https://purl.org/rss/1.0/modules/content/" xmlns:wfw="https://wellformedweb.org/CommentAPI/" xmlns:dc="https://purl.org/dc/elements/1.1/" xmlns:atom="https://www.w3.org/2005/Atom" xmlns:sy="https://purl.org/rss/1.0/modules/syndication/" xmlns:slash="https://purl.org/rss/1.0/modules/slash/" xmlns:georss="https://www.georss.org/georss" xmlns:geo="https://www.w3.org/2003/01/geo/wgs84_pos#" xmlns:media="https://search.yahoo.com/mrss/" version="1.0" extension-element-prefixes="exslt">
<xsl:output omit-xml-declaration="yes" indent="no" method="text"/>
<xsl:template match="/">
<xsl:for-each select="/rss/channel/item/enclosure[@type="audio/ogg"][1]">
<xsl:call-template name="value-of-template">
<xsl:with-param name="select" select="@url"/>
</xsl:call-template>
<xsl:value-of select="'
'"/>
</xsl:for-each>
</xsl:template>
<xsl:template name="value-of-template">
<xsl:param name="select"/>
<xsl:value-of select="$select"/>
<xsl:for-each select="exslt:node-set($select)[position()>1]">
<xsl:value-of select="'
'"/>
<xsl:value-of select="."/>
</xsl:for-each>
</xsl:template>
</xsl:stylesheet>
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