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xeps/texml-xsl/date-time.xsl

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<?xml version="1.0"?>
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:doc="http://xsltsl.org/xsl/documentation/1.0"
xmlns:dt="http://xsltsl.org/date-time"
xmlns:str="http://xsltsl.org/string"
extension-element-prefixes="doc str">
<doc:reference xmlns="">
<referenceinfo>
<releaseinfo role="meta">
$Id$
</releaseinfo>
<author>
<surname>Diamond</surname>
<firstname>Jason</firstname>
</author>
<copyright>
<year>2004</year>
<holder>Steve Ball</holder>
</copyright>
<copyright>
<year>2001</year>
<holder>Jason Diamond</holder>
</copyright>
</referenceinfo>
<title>Date/Time Processing</title>
<partintro>
<section>
<title>Introduction</title>
<para>This module provides templates for formatting and parsing date/time strings.</para>
<para>See <ulink url="http://www.tondering.dk/claus/calendar.html">http://www.tondering.dk/claus/calendar.html</ulink> for more information on calendars and the calculations this library performs.</para>
</section>
</partintro>
</doc:reference>
<doc:template name="dt:format-date-time" xmlns="">
<refpurpose>Returns a string with a formatted date/time.</refpurpose>
<refdescription>
<para>The formatted date/time is determined by the format parameter. The default format is %Y-%m-%dT%H:%M:%S%z, the W3C format.</para>
</refdescription>
<refparameter>
<variablelist>
<varlistentry>
<term>xsd-date-time</term>
<listitem>
<para>The date-time value in XML Schemas (WXS) format.</para>
<para>If this value is specified, it takes priority over other parameters.</para>
</listitem>
</varlistentry>
<varlistentry>
<term>year</term>
<listitem>
<para>Year</para>
</listitem>
</varlistentry>
<varlistentry>
<term>month</term>
<listitem>
<para>Month (1 - 12; January = 1)</para>
</listitem>
</varlistentry>
<varlistentry>
<term>day</term>
<listitem>
<para>Day of month (1 - 31)</para>
</listitem>
</varlistentry>
<varlistentry>
<term>hour</term>
<listitem>
<para>Hours since midnight (0 - 23)</para>
</listitem>
</varlistentry>
<varlistentry>
<term>minute</term>
<listitem>
<para>Minutes after hour (0 - 59)</para>
</listitem>
</varlistentry>
<varlistentry>
<term>second</term>
<listitem>
<para>Seconds after minute (0 - 59)</para>
</listitem>
</varlistentry>
<varlistentry>
<term>time-zone</term>
<listitem>
<para>Time zone string (e.g., 'Z' or '-08:00')</para>
</listitem>
</varlistentry>
<varlistentry>
<term>format</term>
<listitem>
<para>The format specification.</para>
<variablelist>
<varlistentry>
<term>%a</term>
<listitem>
<para>Abbreviated weekday name</para>
</listitem>
</varlistentry>
<varlistentry>
<term>%A</term>
<listitem>
<para>Full weekday name</para>
</listitem>
</varlistentry>
<varlistentry>
<term>%b</term>
<listitem>
<para>Abbreviated month name</para>
</listitem>
</varlistentry>
<varlistentry>
<term>%B</term>
<listitem>
<para>Full month name</para>
</listitem>
</varlistentry>
<varlistentry>
<term>%c</term>
<listitem>
<para>Date and time representation appropriate for locale</para>
</listitem>
</varlistentry>
<varlistentry>
<term>%d</term>
<listitem>
<para>Day of month as decimal number (01 - 31)</para>
</listitem>
</varlistentry>
<varlistentry>
<term>%e</term>
<listitem>
<para>Day of month as decimal number (1 - 31)</para>
</listitem>
</varlistentry>
<varlistentry>
<term>%H</term>
<listitem>
<para>Hour in 24-hour format (00 - 23)</para>
</listitem>
</varlistentry>
<varlistentry>
<term>%I</term>
<listitem>
<para>Hour in 12-hour format (01 - 12)</para>
</listitem>
</varlistentry>
<varlistentry>
<term>%i</term>
<listitem>
<para>Hour in 12-hour format (1 - 12)</para>
</listitem>
</varlistentry>
<varlistentry>
<term>%j</term>
<listitem>
<para>Day of year as decimal number (001 - 366)</para>
</listitem>
</varlistentry>
<varlistentry>
<term>%m</term>
<listitem>
<para>Month as decimal number (01 - 12)</para>
</listitem>
</varlistentry>
<varlistentry>
<term>%n</term>
<listitem>
<para>Month as decimal number (1 - 12)</para>
</listitem>
</varlistentry>
<varlistentry>
<term>%M</term>
<listitem>
<para>Minute as decimal number (00 - 59)</para>
</listitem>
</varlistentry>
<varlistentry>
<term>%P</term>
<listitem>
<para>Current locale's A.M./P.M. indicator for 12-hour clock, uppercase</para>
</listitem>
</varlistentry>
<varlistentry>
<term>%Q</term>
<listitem>
<para>Current locale's A.M./P.M. indicator for 12-hour clock, uppercase with periods</para>
</listitem>
</varlistentry>
<varlistentry>
<term>%p</term>
<listitem>
<para>Current locale's A.M./P.M. indicator for 12-hour clock, lowercase</para>
</listitem>
</varlistentry>
<varlistentry>
<term>%q</term>
<listitem>
<para>Current locale's A.M./P.M. indicator for 12-hour clock, lowercase with periods</para>
</listitem>
</varlistentry>
<varlistentry>
<term>%S</term>
<listitem>
<para>Second as decimal number (00 - 59)</para>
</listitem>
</varlistentry>
<varlistentry>
<term>%U</term>
<listitem>
<para>Week of year as decimal number, with Sunday as first day of week (00 - 53)</para>
</listitem>
</varlistentry>
<varlistentry>
<term>%w</term>
<listitem>
<para>Weekday as decimal number (0 - 6; Sunday is 0)</para>
</listitem>
</varlistentry>
<varlistentry>
<term>%W</term>
<listitem>
<para>Week of year as decimal number, with Monday as first day of week (00 - 53)</para>
</listitem>
</varlistentry>
<varlistentry>
<term>%x</term>
<listitem>
<para>Date representation for current locale </para>
</listitem>
</varlistentry>
<varlistentry>
<term>%X</term>
<listitem>
<para>Time representation for current locale</para>
</listitem>
</varlistentry>
<varlistentry>
<term>%y</term>
<listitem>
<para>Year without century, as decimal number (00 - 99)</para>
</listitem>
</varlistentry>
<varlistentry>
<term>%Y</term>
<listitem>
<para>Year with century, as decimal number</para>
</listitem>
</varlistentry>
<varlistentry>
<term>%z</term>
<listitem>
<para>Time-zone name or abbreviation; no characters if time zone is unknown</para>
</listitem>
</varlistentry>
<varlistentry>
<term>%%</term>
<listitem>
<para>Percent sign</para>
</listitem>
</varlistentry>
</variablelist>
</listitem>
</varlistentry>
</variablelist>
</refparameter>
<refreturn>
<para>Returns a formatted date/time string.</para>
</refreturn>
</doc:template>
<xsl:template name="dt:format-date-time">
<xsl:param name='xsd-date-time'/>
<xsl:param name="year"/>
<xsl:param name="month"/>
<xsl:param name="day"/>
<xsl:param name="hour"/>
<xsl:param name="minute"/>
<xsl:param name="second"/>
<xsl:param name="time-zone"/>
<xsl:param name="format" select="'%Y-%m-%dT%H:%M:%S%z'"/>
<xsl:value-of select="substring-before($format, '%')"/>
<xsl:variable name="code" select="substring(substring-after($format, '%'), 1, 1)"/>
<xsl:choose>
<xsl:when test='$xsd-date-time'>
<xsl:call-template name='dt:format-date-time'>
<xsl:with-param name='year'>
<xsl:call-template name='dt:get-xsd-datetime-year'>
<xsl:with-param name='xsd-date-time' select='$xsd-date-time'/>
</xsl:call-template>
</xsl:with-param>
<xsl:with-param name='month'>
<xsl:call-template name='dt:get-xsd-datetime-month'>
<xsl:with-param name='xsd-date-time' select='$xsd-date-time'/>
</xsl:call-template>
</xsl:with-param>
<xsl:with-param name='day'>
<xsl:call-template name='dt:get-xsd-datetime-day'>
<xsl:with-param name='xsd-date-time' select='$xsd-date-time'/>
</xsl:call-template>
</xsl:with-param>
<xsl:with-param name='hour'>
<xsl:call-template name='dt:get-xsd-datetime-hour'>
<xsl:with-param name='xsd-date-time' select='$xsd-date-time'/>
</xsl:call-template>
</xsl:with-param>
<xsl:with-param name='minute'>
<xsl:call-template name='dt:get-xsd-datetime-minute'>
<xsl:with-param name='xsd-date-time' select='$xsd-date-time'/>
</xsl:call-template>
</xsl:with-param>
<xsl:with-param name='second'>
<xsl:call-template name='dt:get-xsd-datetime-second'>
<xsl:with-param name='xsd-date-time' select='$xsd-date-time'/>
</xsl:call-template>
</xsl:with-param>
<xsl:with-param name='time-zone'>
<xsl:call-template name='dt:get-xsd-datetime-timezone'>
<xsl:with-param name='xsd-date-time' select='$xsd-date-time'/>
</xsl:call-template>
</xsl:with-param>
<xsl:with-param name='format'>
<xsl:choose>
<xsl:when test='contains($format, "%")'>
<xsl:text>%</xsl:text>
<xsl:value-of select='substring-after($format, "%")'/>
</xsl:when>
<xsl:otherwise>
<xsl:value-of select='$format'/>
</xsl:otherwise>
</xsl:choose>
</xsl:with-param>
</xsl:call-template>
</xsl:when>
<!-- Abbreviated weekday name -->
<xsl:when test="$code='a'">
<xsl:variable name="day-of-the-week">
<xsl:call-template name="dt:calculate-day-of-the-week">
<xsl:with-param name="year" select="$year"/>
<xsl:with-param name="month" select="$month"/>
<xsl:with-param name="day" select="$day"/>
</xsl:call-template>
</xsl:variable>
<xsl:call-template name="dt:get-day-of-the-week-abbreviation">
<xsl:with-param name="day-of-the-week" select="$day-of-the-week"/>
</xsl:call-template>
</xsl:when>
<!-- Full weekday name -->
<xsl:when test="$code='A'">
<xsl:variable name="day-of-the-week">
<xsl:call-template name="dt:calculate-day-of-the-week">
<xsl:with-param name="year" select="$year"/>
<xsl:with-param name="month" select="$month"/>
<xsl:with-param name="day" select="$day"/>
</xsl:call-template>
</xsl:variable>
<xsl:call-template name="dt:get-day-of-the-week-name">
<xsl:with-param name="day-of-the-week" select="$day-of-the-week"/>
</xsl:call-template>
</xsl:when>
<!-- Abbreviated month name -->
<xsl:when test="$code='b'">
<xsl:call-template name="dt:get-month-abbreviation">
<xsl:with-param name="month" select="$month"/>
</xsl:call-template>
</xsl:when>
<!-- Full month name -->
<xsl:when test="$code='B'">
<xsl:call-template name="dt:get-month-name">
<xsl:with-param name="month" select="$month"/>
</xsl:call-template>
</xsl:when>
<!-- Date and time representation appropriate for locale -->
<xsl:when test="$code='c'">
<xsl:text>[not implemented]</xsl:text>
</xsl:when>
<!-- Day of month as decimal number (01 - 31) -->
<xsl:when test="$code='d'">
<xsl:if test="$day &lt; 10">0</xsl:if>
<xsl:value-of select="number($day)"/>
</xsl:when>
<!-- Day of month as decimal number (1 - 31) -->
<xsl:when test="$code='e'">
<xsl:value-of select="number($day)"/>
</xsl:when>
<!-- Hour in 24-hour format (00 - 23) -->
<xsl:when test="$code='H'">
<xsl:if test="$hour &lt; 10">0</xsl:if>
<xsl:value-of select="number($hour)"/>
</xsl:when>
<!-- Hour in 12-hour format (01 - 12) -->
<xsl:when test="$code='I'">
<xsl:choose>
<xsl:when test="$hour = 0">12</xsl:when>
<xsl:when test="$hour &lt; 10">0<xsl:value-of select="$hour - 0"/></xsl:when>
<xsl:when test="$hour &lt; 13"><xsl:value-of select="$hour - 0"/></xsl:when>
<xsl:when test="$hour &lt; 22">0<xsl:value-of select="$hour - 12"/></xsl:when>
<xsl:otherwise><xsl:value-of select="$hour - 12"/></xsl:otherwise>
</xsl:choose>
</xsl:when>
<!-- Hour in 12-hour format (1 - 12) -->
<xsl:when test="$code='i'">
<xsl:choose>
<xsl:when test="$hour = 0">12</xsl:when>
<xsl:when test="$hour &lt; 10"><xsl:value-of select="$hour - 0"/></xsl:when>
<xsl:when test="$hour &lt; 13"><xsl:value-of select="$hour - 0"/></xsl:when>
<xsl:when test="$hour &lt; 22"><xsl:value-of select="$hour - 12"/></xsl:when>
<xsl:otherwise><xsl:value-of select="$hour - 12"/></xsl:otherwise>
</xsl:choose>
</xsl:when>
<!-- Day of year as decimal number (001 - 366) -->
<xsl:when test="$code='j'">
<xsl:text>[not implemented]</xsl:text>
</xsl:when>
<!-- Month as decimal number (01 - 12) -->
<xsl:when test="$code='m'">
<xsl:if test="$month &lt; 10">0</xsl:if>
<xsl:value-of select="number($month)"/>
</xsl:when>
<!-- Month as decimal number (1 - 12) -->
<xsl:when test="$code='n'">
<xsl:value-of select="number($month)"/>
</xsl:when>
<!-- Minute as decimal number (00 - 59) -->
<xsl:when test="$code='M'">
<xsl:if test="$minute &lt; 10">0</xsl:if>
<xsl:value-of select="number($minute)"/>
</xsl:when>
<!-- Current locale's A.M./P.M. indicator for 12-hour clock -->
<xsl:when test="$code='p'">
<xsl:choose>
<xsl:when test="$hour &lt; 12">am</xsl:when>
<xsl:otherwise>pm</xsl:otherwise>
</xsl:choose>
</xsl:when>
<!-- Current locale's A.M./P.M. indicator for 12-hour clock with periods -->
<xsl:when test="$code='q'">
<xsl:choose>
<xsl:when test="$hour &lt; 12">am</xsl:when>
<xsl:otherwise>p.m.</xsl:otherwise>
</xsl:choose>
</xsl:when>
<!-- Current locale's A.M./P.M. indicator for 12-hour clock -->
<xsl:when test="$code='P'">
<xsl:choose>
<xsl:when test="$hour &lt; 12">AM</xsl:when>
<xsl:otherwise>PM</xsl:otherwise>
</xsl:choose>
</xsl:when>
<!-- Current locale's A.M./P.M. indicator for 12-hour clock with periods -->
<xsl:when test="$code='Q'">
<xsl:choose>
<xsl:when test="$hour &lt; 12">AM</xsl:when>
<xsl:otherwise>P.M.</xsl:otherwise>
</xsl:choose>
</xsl:when>
<!-- Second as decimal number (00 - 59) -->
<xsl:when test="$code='S'">
<xsl:if test="$second &lt; 10">0</xsl:if>
<xsl:value-of select="number($second)"/>
</xsl:when>
<!-- Week of year as decimal number, with Sunday as first day of week (00 - 53) -->
<xsl:when test="$code='U'">
<!-- add 1 to day -->
<xsl:call-template name="dt:calculate-week-number">
<xsl:with-param name="year" select="$year"/>
<xsl:with-param name="month" select="$month"/>
<xsl:with-param name="day" select="$day + 1"/>
</xsl:call-template>
</xsl:when>
<!-- Weekday as decimal number (0 - 6; Sunday is 0) -->
<xsl:when test="$code='w'">
<xsl:call-template name="dt:calculate-day-of-the-week">
<xsl:with-param name="year" select="$year"/>
<xsl:with-param name="month" select="$month"/>
<xsl:with-param name="day" select="$day"/>
</xsl:call-template>
</xsl:when>
<!-- Week of year as decimal number, with Monday as first day of week (00 - 53) -->
<xsl:when test="$code='W'">
<xsl:call-template name="dt:calculate-week-number">
<xsl:with-param name="year" select="$year"/>
<xsl:with-param name="month" select="$month"/>
<xsl:with-param name="day" select="$day"/>
</xsl:call-template>
</xsl:when>
<!-- Date representation for current locale -->
<xsl:when test="$code='x'">
<xsl:text>[not implemented]</xsl:text>
</xsl:when>
<!-- Time representation for current locale -->
<xsl:when test="$code='X'">
<xsl:text>[not implemented]</xsl:text>
</xsl:when>
<!-- Year without century, as decimal number (00 - 99) -->
<xsl:when test="$code='y'">
<xsl:text>[not implemented]</xsl:text>
</xsl:when>
<!-- Year with century, as decimal number -->
<xsl:when test="$code='Y'">
<xsl:value-of select="concat(substring('000', string-length(number($year))), $year)"/>
</xsl:when>
<!-- Time-zone name or abbreviation; no characters if time zone is unknown -->
<xsl:when test="$code='z'">
<xsl:value-of select="$time-zone"/>
</xsl:when>
<!-- Percent sign -->
<xsl:when test="$code='%'">
<xsl:text>%</xsl:text>
</xsl:when>
</xsl:choose>
<xsl:variable name="remainder" select="substring(substring-after($format, '%'), 2)"/>
<xsl:if test="not($xsd-date-time) and $remainder">
<xsl:call-template name="dt:format-date-time">
<xsl:with-param name="year" select="$year"/>
<xsl:with-param name="month" select="$month"/>
<xsl:with-param name="day" select="$day"/>
<xsl:with-param name="hour" select="$hour"/>
<xsl:with-param name="minute" select="$minute"/>
<xsl:with-param name="second" select="$second"/>
<xsl:with-param name="time-zone" select="$time-zone"/>
<xsl:with-param name="format" select="$remainder"/>
</xsl:call-template>
</xsl:if>
</xsl:template>
<doc:template name="dt:calculate-day-of-the-week" xmlns="">
<refpurpose>Calculates the day of the week.</refpurpose>
<refdescription>
<para>Given any Gregorian date, this calculates the day of the week.</para>
</refdescription>
<refparameter>
<variablelist>
<varlistentry>
<term>year</term>
<listitem>
<para>Year</para>
</listitem>
</varlistentry>
<varlistentry>
<term>month</term>
<listitem>
<para>Month (1 - 12; January = 1)</para>
</listitem>
</varlistentry>
<varlistentry>
<term>day</term>
<listitem>
<para>Day of month (1 - 31)</para>
</listitem>
</varlistentry>
</variablelist>
</refparameter>
<refreturn>
<para>Returns the day of the week (0 - 6; Sunday = 0).</para>
</refreturn>
</doc:template>
<xsl:template name="dt:calculate-day-of-the-week">
<xsl:param name="year"/>
<xsl:param name="month"/>
<xsl:param name="day"/>
<xsl:variable name="a" select="floor((14 - $month) div 12)"/>
<xsl:variable name="y" select="$year - $a"/>
<xsl:variable name="m" select="$month + 12 * $a - 2"/>
<xsl:value-of select="($day + $y + floor($y div 4) - floor($y div 100) + floor($y div 400) + floor((31 * $m) div 12)) mod 7"/>
</xsl:template>
<doc:template name="dt:calculate-last-day-of-month" xmlns="">
<refpurpose>Calculates the number of days for a specified month.</refpurpose>
<refdescription>
<para>Given any Gregorian month, this calculates the last day of the month.</para>
</refdescription>
<refparameter>
<variablelist>
<varlistentry>
<term>year</term>
<listitem>
<para>Year</para>
</listitem>
</varlistentry>
<varlistentry>
<term>month</term>
<listitem>
<para>Month (1 - 12; January = 1)</para>
</listitem>
</varlistentry>
</variablelist>
</refparameter>
<refreturn>
<para>Returns the number of days in given month as a decimal number.</para>
</refreturn>
</doc:template>
<xsl:template name="dt:calculate-last-day-of-month">
<xsl:param name="year"/>
<xsl:param name="month"/>
<xsl:choose>
<xsl:when test="$month = 2">
<xsl:choose>
<xsl:when test="($year mod 4) = 0 and (($year mod 400) = 0
or ($year mod 100) != 0)">29</xsl:when>
<xsl:otherwise>28</xsl:otherwise>
</xsl:choose>
</xsl:when>
<xsl:when test="$month &lt; 8">
<xsl:choose>
<xsl:when test="$month mod 2 = 0">30</xsl:when>
<xsl:otherwise>31</xsl:otherwise>
</xsl:choose>
</xsl:when>
<xsl:otherwise>
<xsl:choose>
<xsl:when test="$month mod 2 = 1">30</xsl:when>
<xsl:otherwise>31</xsl:otherwise>
</xsl:choose>
</xsl:otherwise>
</xsl:choose>
</xsl:template>
<doc:template name="dt:get-day-of-the-week-name" xmlns="">
<refpurpose>Gets the day of the week's full name.</refpurpose>
<refdescription>
<para>Converts a numeric day of the week value into a string representing the day's full name.</para>
</refdescription>
<refparameter>
<variablelist>
<varlistentry>
<term>day-of-the-week</term>
<listitem>
<para>Day of the week (0 - 6; Sunday = 0)</para>
</listitem>
</varlistentry>
</variablelist>
</refparameter>
<refreturn>
<para>Returns a string.</para>
</refreturn>
</doc:template>
<xsl:template name="dt:get-day-of-the-week-name">
<xsl:param name="day-of-the-week"/>
<xsl:choose>
<xsl:when test="$day-of-the-week = 0">Sunday</xsl:when>
<xsl:when test="$day-of-the-week = 1">Monday</xsl:when>
<xsl:when test="$day-of-the-week = 2">Tuesday</xsl:when>
<xsl:when test="$day-of-the-week = 3">Wednesday</xsl:when>
<xsl:when test="$day-of-the-week = 4">Thursday</xsl:when>
<xsl:when test="$day-of-the-week = 5">Friday</xsl:when>
<xsl:when test="$day-of-the-week = 6">Saturday</xsl:when>
<xsl:otherwise>error: <xsl:value-of select="$day-of-the-week"/></xsl:otherwise>
</xsl:choose>
</xsl:template>
<doc:template name="dt:get-day-of-the-week-abbreviation" xmlns="">
<refpurpose>Gets the day of the week's abbreviation.</refpurpose>
<refdescription>
<para>Converts a numeric day of the week value into a string representing the day's abbreviation.</para>
</refdescription>
<refparameter>
<variablelist>
<varlistentry>
<term>day-of-the-week</term>
<listitem>
<para>Day of the week (0 - 6; Sunday = 0)</para>
</listitem>
</varlistentry>
</variablelist>
</refparameter>
<refreturn>
<para>Returns a string.</para>
</refreturn>
</doc:template>
<xsl:template name="dt:get-day-of-the-week-abbreviation">
<xsl:param name="day-of-the-week"/>
<xsl:choose>
<xsl:when test="$day-of-the-week = 0">Sun</xsl:when>
<xsl:when test="$day-of-the-week = 1">Mon</xsl:when>
<xsl:when test="$day-of-the-week = 2">Tue</xsl:when>
<xsl:when test="$day-of-the-week = 3">Wed</xsl:when>
<xsl:when test="$day-of-the-week = 4">Thu</xsl:when>
<xsl:when test="$day-of-the-week = 5">Fri</xsl:when>
<xsl:when test="$day-of-the-week = 6">Sat</xsl:when>
<xsl:otherwise>error: <xsl:value-of select="$day-of-the-week"/></xsl:otherwise>
</xsl:choose>
</xsl:template>
<doc:template name="dt:get-month-name" xmlns="">
<refpurpose>Gets the month's full name.</refpurpose>
<refdescription>
<para>Converts a numeric month value into a string representing the month's full name.</para>
</refdescription>
<refparameter>
<variablelist>
<varlistentry>
<term>month</term>
<listitem>
<para>Month (1 - 12; Januaray = 1)</para>
</listitem>
</varlistentry>
</variablelist>
</refparameter>
<refreturn>
<para>Returns a string.</para>
</refreturn>
</doc:template>
<xsl:template name="dt:get-month-name">
<xsl:param name="month"/>
<xsl:choose>
<xsl:when test="$month = 1">January</xsl:when>
<xsl:when test="$month = 2">February</xsl:when>
<xsl:when test="$month = 3">March</xsl:when>
<xsl:when test="$month = 4">April</xsl:when>
<xsl:when test="$month = 5">May</xsl:when>
<xsl:when test="$month = 6">June</xsl:when>
<xsl:when test="$month = 7">July</xsl:when>
<xsl:when test="$month = 8">August</xsl:when>
<xsl:when test="$month = 9">September</xsl:when>
<xsl:when test="$month = 10">October</xsl:when>
<xsl:when test="$month = 11">November</xsl:when>
<xsl:when test="$month = 12">December</xsl:when>
<xsl:otherwise>error: <xsl:value-of select="$month"/></xsl:otherwise>
</xsl:choose>
</xsl:template>
<doc:template name="dt:get-month-abbreviation" xmlns="">
<refpurpose>Gets the month's abbreviation.</refpurpose>
<refdescription>
<para>Converts a numeric month value into a string representing the month's abbreviation.</para>
</refdescription>
<refparameter>
<variablelist>
<varlistentry>
<term>month</term>
<listitem>
<para>Month (1 - 12; Januaray = 1)</para>
</listitem>
</varlistentry>
</variablelist>
</refparameter>
<refreturn>
<para>Returns a string.</para>
</refreturn>
</doc:template>
<xsl:template name="dt:get-month-abbreviation">
<xsl:param name="month"/>
<xsl:choose>
<xsl:when test="$month = 1">Jan</xsl:when>
<xsl:when test="$month = 2">Feb</xsl:when>
<xsl:when test="$month = 3">Mar</xsl:when>
<xsl:when test="$month = 4">Apr</xsl:when>
<xsl:when test="$month = 5">May</xsl:when>
<xsl:when test="$month = 6">Jun</xsl:when>
<xsl:when test="$month = 7">Jul</xsl:when>
<xsl:when test="$month = 8">Aug</xsl:when>
<xsl:when test="$month = 9">Sep</xsl:when>
<xsl:when test="$month = 10">Oct</xsl:when>
<xsl:when test="$month = 11">Nov</xsl:when>
<xsl:when test="$month = 12">Dec</xsl:when>
<xsl:otherwise>error: <xsl:value-of select="$month"/></xsl:otherwise>
</xsl:choose>
</xsl:template>
<doc:template name="dt:calculate-julian-day" xmlns="">
<refpurpose>Calculates the Julian Day for a specified date.</refpurpose>
<refdescription>
<para>Given any Gregorian date, this calculates the Julian Day.</para>
</refdescription>
<refparameter>
<variablelist>
<varlistentry>
<term>year</term>
<listitem>
<para>Year</para>
</listitem>
</varlistentry>
<varlistentry>
<term>month</term>
<listitem>
<para>Month (1 - 12; January = 1)</para>
</listitem>
</varlistentry>
<varlistentry>
<term>day</term>
<listitem>
<para>Day of month (1 - 31)</para>
</listitem>
</varlistentry>
</variablelist>
</refparameter>
<refreturn>
<para>Returns the Julian Day as a decimal number.</para>
</refreturn>
</doc:template>
<xsl:template name="dt:calculate-julian-day">
<xsl:param name="year"/>
<xsl:param name="month"/>
<xsl:param name="day"/>
<xsl:variable name="a" select="floor((14 - $month) div 12)"/>
<xsl:variable name="y" select="$year + 4800 - $a"/>
<xsl:variable name="m" select="$month + 12 * $a - 3"/>
<xsl:value-of select="$day + floor((153 * $m + 2) div 5) + $y * 365 + floor($y div 4) - floor($y div 100) + floor($y div 400) - 32045"/>
</xsl:template>
<doc:template name="dt:format-julian-day" xmlns="">
<refpurpose>Returns a string with a formatted date for a specified Julian Day.</refpurpose>
<refdescription>
<para>Given any Julian Day, this returns a string according to the format specification.</para>
</refdescription>
<refparameter>
<variablelist>
<varlistentry>
<term>julian-day</term>
<listitem>
<para>A Julian Day</para>
</listitem>
</varlistentry>
<varlistentry>
<term>format</term>
<listitem>
<para>The format specification. See dt:format-date-time for more details.</para>
</listitem>
</varlistentry>
</variablelist>
</refparameter>
<refreturn>
<para>A string.</para>
</refreturn>
</doc:template>
<xsl:template name="dt:format-julian-day">
<xsl:param name="julian-day"/>
<xsl:param name="format" select="'%Y-%m-%d'"/>
<xsl:variable name="a" select="$julian-day + 32044"/>
<xsl:variable name="b" select="floor((4 * $a + 3) div 146097)"/>
<xsl:variable name="c" select="$a - floor(($b * 146097) div 4)"/>
<xsl:variable name="d" select="floor((4 * $c + 3) div 1461)"/>
<xsl:variable name="e" select="$c - floor((1461 * $d) div 4)"/>
<xsl:variable name="m" select="floor((5 * $e + 2) div 153)"/>
<xsl:variable name="day" select="$e - floor((153 * $m + 2) div 5) + 1"/>
<xsl:variable name="month" select="$m + 3 - 12 * floor($m div 10)"/>
<xsl:variable name="year" select="$b * 100 + $d - 4800 + floor($m div 10)"/>
<xsl:call-template name="dt:format-date-time">
<xsl:with-param name="year" select="$year"/>
<xsl:with-param name="month" select="$month"/>
<xsl:with-param name="day" select="$day"/>
<xsl:with-param name="format" select="$format"/>
</xsl:call-template>
</xsl:template>
<doc:template name="dt:calculate-week-number" xmlns="">
<refpurpose>Calculates the week number for a specified date.</refpurpose>
<refdescription>
<para>Assumes Monday is the first day of the week.</para>
</refdescription>
<refparameter>
<variablelist>
<varlistentry>
<term>year</term>
<listitem>
<para>Year</para>
</listitem>
</varlistentry>
<varlistentry>
<term>month</term>
<listitem>
<para>Month (1 - 12; January = 1)</para>
</listitem>
</varlistentry>
<varlistentry>
<term>day</term>
<listitem>
<para>Day of month (1 - 31)</para>
</listitem>
</varlistentry>
</variablelist>
</refparameter>
<refreturn>
<para>Returns the week number as a decimal number.</para>
</refreturn>
</doc:template>
<xsl:template name="dt:calculate-week-number">
<xsl:param name="year"/>
<xsl:param name="month"/>
<xsl:param name="day"/>
<xsl:variable name="J">
<xsl:call-template name="dt:calculate-julian-day">
<xsl:with-param name="year" select="$year"/>
<xsl:with-param name="month" select="$month"/>
<xsl:with-param name="day" select="$day"/>
</xsl:call-template>
</xsl:variable>
<xsl:variable name="d4" select="($J + 31741 - ($J mod 7)) mod 146097 mod 36524 mod 1461"/>
<xsl:variable name="L" select="floor($d4 div 1460)"/>
<xsl:variable name="d1" select="(($d4 - $L) mod 365) + $L"/>
<xsl:value-of select="floor($d1 div 7) + 1"/>
</xsl:template>
<doc:template name="dt:get-month-number" xmlns="">
<refpurpose>Take a month by name and return a number which can be used as input to the templates. </refpurpose>
<refdescription>
<para>Input</para>
</refdescription>
<refparameter>
<variablelist>
<varlistentry>
<term>month</term>
<listitem>
<para>Month as described either by full name or abbreviation.</para>
</listitem>
</varlistentry>
</variablelist>
</refparameter>
<refreturn>
<para>Return a month as a decimal number. (Jan = 1)</para>
</refreturn>
</doc:template>
<xsl:template name='dt:get-month-number'>
<xsl:param name='month'/>
<xsl:variable name='monToUpper'>
<xsl:call-template name='str:to-upper'>
<xsl:with-param name='text' select='$month'/>
</xsl:call-template>
</xsl:variable>
<xsl:choose>
<xsl:when test='starts-with($monToUpper,"JAN")'>
<xsl:value-of select='"1"'/>
</xsl:when>
<xsl:when test='starts-with($monToUpper,"FEB")'>
<xsl:value-of select='2'/>
</xsl:when>
<xsl:when test='starts-with($monToUpper,"MAR")'>
<xsl:value-of select='3'/>
</xsl:when>
<xsl:when test='starts-with($monToUpper,"APR")'>
<xsl:value-of select='4'/>
</xsl:when>
<xsl:when test='starts-with($monToUpper,"MAY")'>
<xsl:value-of select='5'/>
</xsl:when>
<xsl:when test='starts-with($monToUpper,"JUN")'>
<xsl:value-of select='6'/>
</xsl:when>
<xsl:when test='starts-with($monToUpper,"JUL")'>
<xsl:value-of select='7'/>
</xsl:when>
<xsl:when test='starts-with($monToUpper,"AUG")'>
<xsl:value-of select='8'/>
</xsl:when>
<xsl:when test='starts-with($monToUpper,"SEP")'>
<xsl:value-of select='9'/>
</xsl:when>
<xsl:when test='starts-with($monToUpper,"OCT")'>
<xsl:value-of select='10'/>
</xsl:when>
<xsl:when test='starts-with($monToUpper,"NOV")'>
<xsl:value-of select='11'/>
</xsl:when>
<xsl:when test='starts-with($monToUpper,"DEC")'>
<xsl:value-of select='"12"'/>
</xsl:when>
</xsl:choose>
</xsl:template>
<doc:template name="dt:get-xsd-datetime-year" xmlns="">
<refpurpose>Return year component of XSD DateTime value.</refpurpose>
<refdescription>
<para>Extract component of XML Schemas DateTime value.</para>
</refdescription>
<refparameter>
<variablelist>
<varlistentry>
<term>xsd-date-time</term>
<listitem>
<para>A value in XSD DateTime format.</para>
</listitem>
</varlistentry>
</variablelist>
</refparameter>
<refreturn>
<para>Returns year component.</para>
</refreturn>
</doc:template>
<xsl:template name='dt:get-xsd-datetime-year'>
<xsl:param name='xsd-date-time'/>
<xsl:choose>
<xsl:when test='contains($xsd-date-time, "T")'>
<xsl:call-template name='dt:get-xsd-datetime-year'>
<xsl:with-param name='xsd-date-time' select='substring-before($xsd-date-time, "T")'/>
</xsl:call-template>
</xsl:when>
<!-- Check for time -->
<xsl:when test='substring($xsd-date-time, 3, 1) = ":"'/>
<xsl:otherwise>
<!-- This is a date -->
<xsl:value-of select='substring-before($xsd-date-time, "-")'/>
</xsl:otherwise>
</xsl:choose>
</xsl:template>
<doc:template name="dt:get-xsd-datetime-month" xmlns="">
<refpurpose>Return month component of XSD DateTime value.</refpurpose>
<refdescription>
<para>Extract component of XML Schemas DateTime value.</para>
</refdescription>
<refparameter>
<variablelist>
<varlistentry>
<term>xsd-date-time</term>
<listitem>
<para>A value in XSD DateTime format.</para>
</listitem>
</varlistentry>
</variablelist>
</refparameter>
<refreturn>
<para>Returns month component.</para>
</refreturn>
</doc:template>
<xsl:template name='dt:get-xsd-datetime-month'>
<xsl:param name='xsd-date-time'/>
<xsl:choose>
<xsl:when test='contains($xsd-date-time, "T")'>
<xsl:call-template name='dt:get-xsd-datetime-month'>
<xsl:with-param name='xsd-date-time' select='substring-before($xsd-date-time, "T")'/>
</xsl:call-template>
</xsl:when>
<!-- Check for time -->
<xsl:when test='substring($xsd-date-time, 3, 1) = ":"'/>
<xsl:otherwise>
<!-- This is a date -->
<xsl:value-of select='substring(substring-after($xsd-date-time, "-"), 1, 2)'/>
</xsl:otherwise>
</xsl:choose>
</xsl:template>
<doc:template name="dt:get-xsd-datetime-day" xmlns="">
<refpurpose>Return day component of XSD DateTime value.</refpurpose>
<refdescription>
<para>Extract component of XML Schemas DateTime value.</para>
</refdescription>
<refparameter>
<variablelist>
<varlistentry>
<term>xsd-date-time</term>
<listitem>
<para>A value in XSD DateTime format.</para>
</listitem>
</varlistentry>
</variablelist>
</refparameter>
<refreturn>
<para>Returns day component.</para>
</refreturn>
</doc:template>
<xsl:template name='dt:get-xsd-datetime-day'>
<xsl:param name='xsd-date-time'/>
<xsl:choose>
<xsl:when test='contains($xsd-date-time, "T")'>
<xsl:call-template name='dt:get-xsd-datetime-day'>
<xsl:with-param name='xsd-date-time' select='substring-before($xsd-date-time, "T")'/>
</xsl:call-template>
</xsl:when>
<!-- Check for time -->
<xsl:when test='substring($xsd-date-time, 3, 1) = ":"'/>
<xsl:otherwise>
<!-- This is a date -->
<xsl:value-of select='substring(substring-after($xsd-date-time, "-"), 4, 2)'/>
</xsl:otherwise>
</xsl:choose>
</xsl:template>
<doc:template name="dt:get-xsd-datetime-hour" xmlns="">
<refpurpose>Return hour component of XSD DateTime value.</refpurpose>
<refdescription>
<para>Extract component of XML Schemas DateTime value.</para>
</refdescription>
<refparameter>
<variablelist>
<varlistentry>
<term>xsd-date-time</term>
<listitem>
<para>A value in XSD DateTime format.</para>
</listitem>
</varlistentry>
</variablelist>
</refparameter>
<refreturn>
<para>Returns hour component.</para>
</refreturn>
</doc:template>
<xsl:template name='dt:get-xsd-datetime-hour'>
<xsl:param name='xsd-date-time'/>
<xsl:choose>
<xsl:when test='contains($xsd-date-time, "T")'>
<xsl:call-template name='dt:get-xsd-datetime-hour'>
<xsl:with-param name='xsd-date-time' select='substring-after($xsd-date-time, "T")'/>
</xsl:call-template>
</xsl:when>
<!-- Check for time -->
<xsl:when test='substring($xsd-date-time, 3, 1) = ":"'>
<xsl:value-of select='substring($xsd-date-time, 1, 2)'/>
</xsl:when>
<xsl:otherwise>
<!-- This is a date -->
</xsl:otherwise>
</xsl:choose>
</xsl:template>
<doc:template name="dt:get-xsd-datetime-minute" xmlns="">
<refpurpose>Return minute component of XSD DateTime value.</refpurpose>
<refdescription>
<para>Extract component of XML Schemas DateTime value.</para>
</refdescription>
<refparameter>
<variablelist>
<varlistentry>
<term>xsd-date-time</term>
<listitem>
<para>A value in XSD DateTime format.</para>
</listitem>
</varlistentry>
</variablelist>
</refparameter>
<refreturn>
<para>Returns minute component.</para>
</refreturn>
</doc:template>
<xsl:template name='dt:get-xsd-datetime-minute'>
<xsl:param name='xsd-date-time'/>
<xsl:choose>
<xsl:when test='contains($xsd-date-time, "T")'>
<xsl:call-template name='dt:get-xsd-datetime-minute'>
<xsl:with-param name='xsd-date-time' select='substring-after($xsd-date-time, "T")'/>
</xsl:call-template>
</xsl:when>
<!-- Check for time -->
<xsl:when test='substring($xsd-date-time, 3, 1) = ":"'>
<xsl:value-of select='substring($xsd-date-time, 4, 2)'/>
</xsl:when>
<xsl:otherwise>
<!-- This is a date -->
</xsl:otherwise>
</xsl:choose>
</xsl:template>
<doc:template name="dt:get-xsd-datetime-second" xmlns="">
<refpurpose>Return second component of XSD DateTime value.</refpurpose>
<refdescription>
<para>Extract component of XML Schemas DateTime value.</para>
</refdescription>
<refparameter>
<variablelist>
<varlistentry>
<term>xsd-date-time</term>
<listitem>
<para>A value in XSD DateTime format.</para>
</listitem>
</varlistentry>
</variablelist>
</refparameter>
<refreturn>
<para>Returns second component.</para>
</refreturn>
</doc:template>
<xsl:template name='dt:get-xsd-datetime-second'>
<xsl:param name='xsd-date-time'/>
<xsl:choose>
<xsl:when test='contains($xsd-date-time, "T")'>
<xsl:call-template name='dt:get-xsd-datetime-second'>
<xsl:with-param name='xsd-date-time' select='substring-after($xsd-date-time, "T")'/>
</xsl:call-template>
</xsl:when>
<!-- Check for time -->
<xsl:when test='substring($xsd-date-time, 3, 1) = ":"'>
<xsl:variable name='part' select='substring($xsd-date-time, 7)'/>
<xsl:choose>
<xsl:when test='contains($part, "Z")'>
<xsl:value-of select='substring-before($part, "Z")'/>
</xsl:when>
<xsl:when test='contains($part, "+")'>
<xsl:value-of select='substring-before($part, "+")'/>
</xsl:when>
<xsl:when test='contains($part, "-")'>
<xsl:value-of select='substring-before($part, "-")'/>
</xsl:when>
<xsl:otherwise>
<xsl:value-of select='$part'/>
</xsl:otherwise>
</xsl:choose>
</xsl:when>
<xsl:otherwise>
<!-- This is a date -->
</xsl:otherwise>
</xsl:choose>
</xsl:template>
<doc:template name="dt:get-xsd-datetime-timezone" xmlns="">
<refpurpose>Return timezone component of XSD DateTime value.</refpurpose>
<refdescription>
<para>Extract component of XML Schemas DateTime value.</para>
</refdescription>
<refparameter>
<variablelist>
<varlistentry>
<term>xsd-date-time</term>
<listitem>
<para>A value in XSD DateTime format.</para>
</listitem>
</varlistentry>
</variablelist>
</refparameter>
<refreturn>
<para>Returns timezone component.</para>
</refreturn>
</doc:template>
<xsl:template name='dt:get-xsd-datetime-timezone'>
<xsl:param name='xsd-date-time'/>
<xsl:choose>
<xsl:when test='contains($xsd-date-time, "Z")'>Z</xsl:when>
<xsl:when test='contains($xsd-date-time, "T")'>
<xsl:call-template name='dt:get-xsd-datetime-timezone'>
<xsl:with-param name='xsd-date-time' select='substring-after($xsd-date-time, "T")'/>
</xsl:call-template>
</xsl:when>
<xsl:when test='substring($xsd-date-time, 3, 1) = ":"'>
<!-- This is a time -->
<xsl:choose>
<xsl:when test='contains($xsd-date-time, "+")'>
<xsl:text>+</xsl:text>
<xsl:value-of select='substring-after($xsd-date-time, "+")'/>
</xsl:when>
<xsl:when test='contains($xsd-date-time, "-")'>
<xsl:text>-</xsl:text>
<xsl:value-of select='substring-after($xsd-date-time, "-")'/>
</xsl:when>
</xsl:choose>
</xsl:when>
<xsl:otherwise>
<!-- This is a date -->
<xsl:value-of select='substring(substring-after($xsd-date-time, "-"), 6)'/>
</xsl:otherwise>
</xsl:choose>
</xsl:template>
</xsl:stylesheet>