<xsl:stylesheet version="1.1"
    xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
    xmlns:csc="http://csclub.uwaterloo.ca/xsltproc"
    xmlns="http://www.w3.org/1999/xhtml"
    exclude-result-prefixes="csc">

<xsl:output method="text" encoding="ISO-8859-1" />

<xsl:template match="//eventdefs">BEGIN:VCALENDAR
VERSION:2.0
X-WR-CALNAME:University of Waterloo Computer Science Club
PRODID:-//Apple Computer, Inc//iCal 2.0//EN
X-WR-RELCALID:3359A191-B19E-4B53-BADC-DFC084FC51C9
X-WR-TIMEZONE:Canada/Eastern
CALSCALE:GREGORIAN
METHOD:PUBLISH
BEGIN:VTIMEZONE
TZID:Canada/Eastern
LAST-MODIFIED:20060912T200739Z
BEGIN:DAYLIGHT
DTSTART:20060301T070000
TZOFFSETTO:-0400
TZOFFSETFROM:+0000
TZNAME:EDT
END:DAYLIGHT
BEGIN:STANDARD
DTSTART:20061029T020000
TZOFFSETTO:-0500
TZOFFSETFROM:-0400
TZNAME:EST
END:STANDARD
BEGIN:DAYLIGHT
DTSTART:20070311T010000
TZOFFSETTO:-0400
TZOFFSETFROM:-0500
TZNAME:EDT
END:DAYLIGHT
END:VTIMEZONE
<xsl:for-each select="eventitem"><xsl:call-template name="eventitem" /></xsl:for-each>
END:VCALENDAR
</xsl:template>

<xsl:template name="eventitem">
<xsl:variable name="room" select="@room" />
<xsl:variable name="start" select="csc:ical-datetime(@date, @time)" />
<xsl:variable name="end" select="csc:ical-datetime(@date, @time, 60)" />
<xsl:variable name="title" select="csc:ical-escape(@title)" />
<xsl:variable name="short" select="csc:ical-escape(string(short))"  />
<xsl:variable name="abstract" select="csc:ical-escape(string(abstract))" />
BEGIN:VEVENT
LOCATION:University of Waterloo - <xsl:value-of select="$room" />
DTSTAMP:20060912T200708Z
UID:<xsl:value-of select="$start" />@csclub.uwaterloo.ca
SEQUENCE:11
DTSTART;TZID=Canada/Eastern:<xsl:value-of select="$start" />
DTEND;TZID=Canada/Eastern:<xsl:value-of select="$end" />
SUMMARY:<xsl:value-of select="$title" /><xsl:if test="$short != ''"> -- <xsl:value-of select="$short" /></xsl:if>
DESCRIPTION:<xsl:value-of select="$abstract" />
END:VEVENT
</xsl:template>

</xsl:stylesheet>