Re: [xsl] How to dynamically evaluate an equation in the input XML docum

On 14.07.2021 20:48, Roger L Costello costello(_at_)mitre(_dot_)org wrote:
> <Convert-to-Celsius>
>      <equation>(Fahrenheit - 32) * (5/9)</equation>
>      <variable>
>          <name>Fahrenheit</name>
>          <value>32</value>
>      </variable>
> </Convert-to-Celsius>
  <xsl:template match="*[equation]">
    <xsl:evaluate xpath="fold-left(variable, equation => replace('/', '
div '), function($e, $v) { replace($e, $v/name, $v/value) })"
context-item="()"/>
  </xsl:template>

seems to work but of course it all depends on the grammar of your
equation and the grammar for variables, the operators used and how to
"translate" them to XPath operators.
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