Re: Recursive string replace in XSLT 2.0

not here

    <xsl:param name="regexes" as="element(regex)*">

Michael meant here, in the template definition

        <xsl:param name="regex"/>


You could declare your top level initialiser to also be a sequence of
elements but then your initial call would have to be


            <xsl:with-param name="regex" select="$regexes"/>

not

            <xsl:with-param name="regex" select="$regexes/regex"/>

David


On 6 January 2017 at 21:37, Rick Quatro rick@xxxxxxxxxxxxxx <
xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx> wrote:

> Thank you Michael. Oddly enough, when I add the as="element(regex)*" the
> finds/changes fail. Here is the entire stylesheet:
>
> <?xml version="1.0" encoding="UTF-8"?>
> <xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
>     xmlns:xs="http://www.w3.org/2001/XMLSchema"
>     exclude-result-prefixes="xs"
>     version="2.0">
>
>     <xsl:output indent="yes"/>
>
>     <xsl:param name="regexes" as="element(regex)*">
>         <regex><find>&quot;(\S)</find><change>&#8220;$1</change></regex>
>         <regex><find>(\S)&quot;</find><change>$1&#8221;</change></regex>
>     </xsl:param>
>
>     <xsl:template match="/">
>         <xsl:apply-templates/>
>     </xsl:template>
>
>     <xsl:template match="p">
>         <p><xsl:apply-templates/></p>
>     </xsl:template>
>
>     <xsl:template match="text()[string-length(normalize-space(.))>0]">
>         <xsl:call-template name="applyRegexes">
>             <xsl:with-param name="nodeText" select="."/>
>             <xsl:with-param name="regex" select="$regexes/regex"/>
>          </xsl:call-template>
>     </xsl:template>
>
>     <xsl:template name="applyRegexes">
>         <xsl:param name="nodeText"/>
>         <xsl:param name="regex"/>
>         <xsl:choose>
>             <xsl:when test="$regex">
>                 <xsl:variable name="temp">
>                     <xsl:value-of
> select="replace($nodeText,$regex[1]/find,$regex[1]/change)"/>
>                 </xsl:variable>
>                 <xsl:call-template name="applyRegexes">
>                     <xsl:with-param name="nodeText" select="$temp"/>
>                     <xsl:with-param name="regex"
> select="$regex[position()>1]"/>
>                 </xsl:call-template>
>             </xsl:when>
>             <xsl:otherwise>
>                 <xsl:value-of select="$nodeText"/>
>             </xsl:otherwise>
>         </xsl:choose>
>      </xsl:template>
>
> </xsl:stylesheet>
>
> Here is my input:
>
> <?xml version='1.0' encoding='UTF-8'?>
> <root>
>    <test><p class="Note">&quot;Abcdefghij.&quot;</p></test>
>    <test><p class="Note">&quot;defghij.&quot;</p></test>
> </root>
>
> Without the as attribute, the finds/changes are applied, but with it, they
> don't. Thanks.
>
> --Rick
>
>
> -----Original Message-----
> From: Michael Kay mike@xxxxxxxxxxxx
> [mailto:xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx]
> Sent: Friday, January 06, 2017 4:25 PM
> To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx
> Subject: Re:  Recursive string replace in XSLT 2.0
>
> If you don't like head-tail recursion for this kind of problem, there are a
> couple of alternatives you might consider.
>
> One is xsl:iterate, which looks something like this:
>
> <xsl:iterate select="$list-of-replacements">
>   <xsl:param name="str" as="xs:string"/>
>   <xsl:on-completion select="$str"/>
>   <xsl:next-iteration>
>     <xsl:with-param name="str" select="replace($str, find, change)"/>
>   </xsl:next-iteration>
> </xsl:iterate>
>
> The other is fold-left:
>
> fold-left($list-of-replacements, $str, function($str, $regex) {
> replace($str, $regex/find, $regex/change) } )
>
> Both these require 3.0.
>
> Michael Kay
> Saxonica
>
>
> > On 6 Jan 2017, at 19:41, David Carlisle d.p.carlisle@xxxxxxxxx
> <xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx> wrote:
> >
> > I'd have written it as a function rather than template, but the main
> > issue is you want your parameter to be (always) a sequence of elements
> > not sometimes a sequence of elements and sometimes a document node
> > with a sequence of child elements.
> >
> > <?xml version="1.0" encoding="UTF-8"?> <xsl:stylesheet
> > xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
> >    xmlns:xs="http://www.w3.org/2001/XMLSchema"
> >    exclude-result-prefixes="xs"
> >    version="2.0">
> >
> >    <xsl:output indent="yes"/>
> >
> >    <xsl:param name="regexes">
> >        <regex><find>a</find><change>x</change></regex>
> >        <regex><find>b</find><change>y</change></regex>
> >        <regex><find>c</find><change>z</change></regex>
> >    </xsl:param>
> >
> >    <xsl:template match="/">
> >        <xsl:apply-templates/>
> >    </xsl:template>
> >
> >    <xsl:template match="p">
> >        <p><xsl:apply-templates/></p>
> >    </xsl:template>
> >
> >    <xsl:template match="text()"><!--[string-length(.)>0]-->
> >        <xsl:message select="."></xsl:message>
> >        <xsl:call-template name="applyRegexes">
> >            <xsl:with-param name="nodeText" select="."/>
> >            <xsl:with-param name="regex" select="$regexes/regex"/>
> >         </xsl:call-template>
> >    </xsl:template>
> >
> >    <xsl:template name="applyRegexes">
> >        <xsl:param name="nodeText"/>
> >        <xsl:param name="regex"/>
> >        <xsl:message select="$regex"></xsl:message>
> >        <xsl:message select="$regex[1]"/>
> >        <xsl:message select="$regex[position()>1]"/>
> >        <xsl:choose>
> >            <xsl:when test="$regex">
> >                <xsl:call-template name="applyRegexes">
> >                    <xsl:with-param name="nodeText"
> > select="replace($nodeText,$regex[1]/find,$regex[1]/change)"/>
> >                    <xsl:with-param name="regex"
> > select="$regex[position()>1]"/>
> >                </xsl:call-template>
> >            </xsl:when>
> >            <xsl:otherwise>
> >                <xsl:value-of select="$nodeText"/>
> >            </xsl:otherwise>
> >        </xsl:choose>
> >     </xsl:template>
> >
> > </xsl:stylesheet>