Re: [xsl] tokenizing and counting with xsl:analyze-string

["Michael Kay mike@xxxxxxxxxxxx" <xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx>]

With xsl:analyse-string you would still need a variable, but it could be a
simpler variable: for example it might just contain a "1" for a match, and a
"0" for a non-match; at the end you then need to count the ones and zeros
which you can do with string-length(translate(...)).

Michael Kay
Saxonica

> On 17 Oct 2020, at 08:29, Mukul Gandhi gandhi.mukul@xxxxxxxxx
<xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx> wrote:
>
> Hi all,
>    I'm mentioning my XSLT use case as follows,
>
> I've got an input string. I also have a regex, which may match words within
an input string. When traversing an input string from left to right, I wish to
count how many words according to the regex appeared within an input string,
and how many words did not match the regex within the input string.
>
> My desired XML output with this XSLT program, shall be as follows,
>
> <result>
>    <yes count="6"/>
>    <no count="5"/>
> </result>
>
> (within the result, value of attribute count would be a number mentioning
how many words matched [shown with element 'yes'] and how many words did not
match [shown with element 'no'] with the regex)
>
> I've tried to solve above use case, using xsl:analyze-string instruction.
Below is my XSLT stylesheet for this,
>
> <xsl:stylesheet version="3.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform
<http://www.w3.org/1999/XSL/Transform>">
>
>    <xsl:output method="xml" indent="yes"/>
>
>    <xsl:template match="/">
>       <xsl:variable name="temp_result" as="element()*">
>           <xsl:analyze-string
select="'abhello1cdehello2fghijklhello3hello4mhello5nhello6'"
>                                          regex="hello[1-9]">
>              <xsl:matching-substring>
>                 <yes><xsl:value-of select="."/></yes>
>              </xsl:matching-substring>
>              <xsl:non-matching-substring>
> 	        <no><xsl:value-of select="."/></no>
>              </xsl:non-matching-substring>
>           </xsl:analyze-string>
>       </xsl:variable>
>       <result>
>          <yes count="{count($temp_result/self::yes)}"/>
>          <no count="{count($temp_result/self::no)}"/>
>       </result>
>    </xsl:template>
>
> </xsl:stylesheet>
>
> (my input string is value of xsl:analyze-string's 'select' attribute)
>
> When I run the above XSLT stylesheet, I get the desired output.
>
> My questions are as follows,
> I'm wondering, is the above mentioned XSLT stylesheet, the kind of only
algorithmic way (i.e using, xsl:analyze-string) to solve the mentioned use
case? Within an XSLT solution for this use case, I wish to avoid probably,
using a variable to store intermediate result ($temp_result within the above
mentioned XSLT stylesheet) before computing the desired counts from this
populated variable.
>
> Any thoughts please.
>
>
>
> --
> Regards,
> Mukul Gandhi
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