Re: [xsl] date formatting function

[Bruce D'Arcus <bdarcus@xxxxxxxxxxxxx>]

On Sep 25, 2004, at 5:30 PM, Michael Kay wrote:

> A minor observation, you could write this much more consisely and
> efficiently as
>
> <xsl:variable name="month-part"
>               select="('January', 'February', 'March', ...)
>                             [xs:int(substring(current(),6,2)]"/>

I've reworked the stylesheets.  I now have two modes -- month and day  
-- with the former template looking like this:

<xsl:template match="mods:date | mods:dateIssued" mode="month">
  <xsl:param name="source"/>
  <xsl:param name="prefix"/>
  <xsl:param name="suffix"/>
  <xsl:variable name="month-part"
	 
select="('January','February','March','April','May','June','July','Augus 
t',
	'September','October','November','December')[xs: 
int(substring(current(),6,2)]"/>
  <xsl:variable name="month-part-abbrev"
	select="('Jan','Feb','Mar','Apr','May','Jun','Jul','Aug',
	'Sept','Oct','Nov','Dec')[xs:int(substring(current(),6,2)]"/>
  <xsl:value-of select="$prefix"/>
  <xsl:value-of select="$month-part"/>
  <xsl:value-of select="$suffix"/>
</xsl:template>

I'm now back to my original problem, which is that I don't know upfront  
the form of my dates, so this gives me this error when I have a date  
like YYYY:

	  Cannot convert zero-length string to an integer

So how can I rework this all to properly handle:

	<date>2000</date>
	<date>2000-11</date>
	<date>2000-11-30</date>
	<date>Summer</date>

My config file now looks in part like:

      <reftype name="article">
	<creator>
	  <names/>
	</creator>
        <date>
	  <year>
	    <prefix> (</prefix>
	    <suffix>) </suffix>
	  </year>
        </date>
	<title>
	  <suffix>, </suffix>
	</title>
	<container>
	  <title font-style="italic">
	    <suffix>, </suffix>
	  </title>
	<origin/>
	<part-details>
	  <date>
	    <month/>
	    <day>
	      <prefix> </prefix>
	    </day>
	  </date>
	  <volume/>
	  <issue>
	    <prefix>(</prefix>
	    <suffix>)</suffix>
	  </issue>
	  <pages/>
	</part-details>
      </container>
    </reftype>

.... and the templates that deal with it:

<xsl:template match="cs:date">
  <xsl:param name="source"/>
  <xsl:apply-templates>
    <xsl:with-param name="source" select="$source"/>
  </xsl:apply-templates>
</xsl:template>

<xsl:template match="cs:year">
  <xsl:param name="source"/>
  <xsl:param name="prefix"/>
  <xsl:param name="suffix"/>
  <xsl:apply-templates select="$source/mods:year">
      <xsl:with-param name="prefix" select="cs:prefix"/>
      <xsl:with-param name="suffix" select="cs:suffix"/>
      <xsl:with-param name="source" select="$source"/>
  </xsl:apply-templates>
</xsl:template>

<xsl:template match="cs:month">
  <xsl:param name="source"/>
  <xsl:param name="prefix"/>
  <xsl:param name="suffix"/>
  <xsl:apply-templates select="$source/mods:originInfo/mods:dateIssued |
			       $source/mods:part/mods:date" mode="month">
      <xsl:with-param name="prefix" select="cs:prefix"/>
      <xsl:with-param name="suffix" select="cs:suffix"/>
      <xsl:with-param name="source" select="$source"/>
  </xsl:apply-templates>
</xsl:template>

I'm not even sure the separate modes is a good idea, but I see no  
alternative.

Bruce