EXSLT - date:day-of-week-in-month - EXSLT Function Implementation

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Supported Version: 2
XML Definition: date.day-of-week-in-month.xml
Source: date.day-of-week-in-month.function.xsl

Source

<xsl:param name="date:date-time"
           select="'2000-01-01T00:00:00Z'" />
<func:function name="date:day-of-week-in-month">
   <xsl:param name="date-time">
      <xsl:choose>
         <xsl:when test="function-available('date:date-time')">
            <xsl:value-of select="date:date-time()" />
         </xsl:when>
         <xsl:otherwise>
            <xsl:value-of select="$date:date-time" />
         </xsl:otherwise>
      </xsl:choose>
   </xsl:param>
   <xsl:variable name="neg"
                 select="starts-with($date-time, '-') and                                     not(starts-with($date-time, '---'))" />
   <xsl:variable name="dt-no-neg">
      <xsl:choose>
         <xsl:when test="$neg or starts-with($date-time, '+')">
            <xsl:value-of select="substring($date-time, 2)" />
         </xsl:when>
         <xsl:otherwise>
            <xsl:value-of select="$date-time" />
         </xsl:otherwise>
      </xsl:choose>
   </xsl:variable>
   <xsl:variable name="dt-no-neg-length"
                 select="string-length($dt-no-neg)" />
   <xsl:variable name="timezone">
      <xsl:choose>
         <xsl:when test="substring($dt-no-neg, $dt-no-neg-length) = 'Z'">Z</xsl:when>
         <xsl:otherwise>
            <xsl:variable name="tz"
                          select="substring($dt-no-neg, $dt-no-neg-length - 5)" />
            <xsl:if test="(substring($tz, 1, 1) = '-' or                             substring($tz, 1, 1) = '+') and                           substring($tz, 4, 1) = ':'">
               <xsl:value-of select="$tz" />
            </xsl:if>
         </xsl:otherwise>
      </xsl:choose>
   </xsl:variable>
   <xsl:variable name="day">
      <xsl:if test="not(string($timezone)) or                     $timezone = 'Z' or                      (substring($timezone, 2, 2) &lt;= 23 and                      substring($timezone, 5, 2) &lt;= 59)">
         <xsl:variable name="dt"
                       select="substring($dt-no-neg, 1, $dt-no-neg-length - string-length($timezone))" />
         <xsl:variable name="dt-length"
                       select="string-length($dt)" />
         <xsl:choose>
            <xsl:when test="starts-with($dt, '---') and                             $dt-length = 5 and                             substring($dt, 4, 2) &lt;= 31">
               <xsl:value-of select="substring($dt, 4, 2)" />
            </xsl:when>
            <xsl:when test="number(substring($dt, 1, 4)) and                             substring($dt, 5, 1) = '-' and                             substring($dt, 6, 2) &lt;= 12 and                             substring($dt, 8, 1) = '-' and                             substring($dt, 9, 2) &lt;= 31 and                             ($dt-length = 10 or                              (substring($dt, 11, 1) = 'T' and                               substring($dt, 12, 2) &lt;= 23 and                               substring($dt, 14, 1) = ':' and                               substring($dt, 15, 2) &lt;= 59 and                               substring($dt, 17, 1) = ':' and                               substring($dt, 18) &lt;= 60))">
               <xsl:value-of select="substring($dt, 9, 2)" />
            </xsl:when>
         </xsl:choose>
      </xsl:if>
   </xsl:variable>
   <func:result select="floor($day div 7 + 1)" />
</func:function>

Change History

Previous Version: date.day-of-week-in-month.1.html