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Re: [xsl] Hash / Translation Tables (the right way)

2011-09-25 17:35:44

Another approach is to have a document months.xml

<months>
<month name='January' abbr='jan' num='01'/>
<month name='February' abbr='feb' num='02'/>
  ...
</months>

then

document('months.xml')/months/month[@abbr=lower-case($mon)]/@num

(or instead of a separate document you can put the lookup table in a global variable in the stylesheet; but with XSLT 1.0 this relies on the node-set() function.)

Michael Kay
Saxonica



On 25/09/2011 22:32, G. Ken Holman wrote:
At 2011-09-25 14:28 -0700, Hank Ratzesberger wrote:
I'm having some problems with constructs like hash tables or
indexes, which are quick in other languages but presently I
am using some brute force with.  E.G.


<xsl:template name="month-of">
<xsl:param name="mon"/>
<xsl:choose>
<xsl:when test="lower-case($mon) = 'jan'">
<xsl:value-of select="'01'"/>
</xsl:when>
<xsl:when test="lower-case($mon) = 'feb'">
<xsl:value-of select="'02'"/>
</xsl:when>
<xsl:when test="lower-case($mon) = 'mar'">
<xsl:value-of select="'03'"/>
</xsl:when>

It seems there must be a way to accomplish this with
a simple sequence. Months of the year, days of the
week, and other one to one translations from the
textual to ordinal or vice versa.

XSLT 1 (though not accommodating case):

 format-number(
(string-length(substring-before('janfebmaraprmayjunjulaugsepoctnovdec',$mon) )
    div 3) + 1,'00')

XSLT 2:

format-number( index-of( ('jan','feb',...,'dec'), lower-case($mon) ),'00' )

I hope this helps.

. . . . . . . . . Ken

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