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Re: XSLT 2: Best Way to Synthesize Elements Given List

Subject: Re: XSLT 2: Best Way to Synthesize Elements Given List of Tagnames
From: "Michael Kay mike@xxxxxxxxxxxx" <xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx>
Date: Sat, 5 Nov 2016 18:13:49 -0000
Re:  XSLT 2: Best Way to Synthesize Elements Given List
Surely this doesn't satisy Eliot's requirement that the path can be
"arbitrarily long"?

Michael Kay
Saxonica

> On 5 Nov 2016, at 16:50, Dimitre Novatchev dnovatchev@xxxxxxxxx
<xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx> wrote:
>
> I'd suggest this non-recursive solution:
>
> <xsl:stylesheet version="2.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
> <xsl:output omit-xml-declaration="yes" indent="yes"/>
>
> <xsl:param name="pPath" select="'/foo/bar/baz/bam/bak/bap/bah/baw'"/>
>
> <xsl:variable name="vNames" select="tokenize($pPath, '/')[.]"/>
>
> <xsl:template match="*[count(current()/ancestor::*) lt count($vNames)]">
>   <xsl:element name="{$vNames[count(current()/ancestor::node())]}">
>     <xsl:apply-templates select="*"/>
>   </xsl:element>
> </xsl:template>
>
> <xsl:template match="text()"/>
> </xsl:stylesheet>
>
>
> When applied on:
>
> <x1>
> <x2>
> <x3>
>  <x4>
>   <x5>
>    <x6>
>     <x7>
>      <x8>
>       <x9>
>        <x10>
>         <x11>
>          <x12>
>           <x13>
>            <x14>
>             <x15>
>              <x16>
>               <x17>
>                <x18>
>                 <x19>
>                  <x20>
>                  </x20>
>                 </x19>
>                </x18>
>               </x17>
>              </x16>
>             </x15>
>            </x14>
>           </x13>
>          </x12>
>         </x11>
>        </x10>
>       </x9>
>      </x8>
>     </x7>
>    </x6>
>   </x5>
>  </x4>
> </x3>
> </x2>
> </x1>
>
> the result is:
>
> <foo>
>  <bar>
>     <baz>
>        <bam>
>           <bak>
>              <bap>
>                 <bah>
>                    <baw/>
>                 </bah>
>              </bap>
>           </bak>
>        </bam>
>     </baz>
>  </bar>
> </foo>
>
>
> Cheers,
> Dimitre
>
> On Sat, Nov 5, 2016 at 9:18 AM, Eliot Kimber ekimber@xxxxxxxxxxxx
> <xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx> wrote:
>> Say I have this string: "foo/bar" (or any arbitrarily-long sequence of
>> /-delimited tag names) and want to construct from it:
>>
>> <foo>
>> <bar>
>>   <!-- Stuff added here that I get from somewhere else -->
>> </bar>
>> </foo>
>>
>> Is there an easier or more obvious way to generate this than an recursive
>> function?
>>
>> With a recursive function I can easily create child elements until the
>> sequence is exhausted but it feels like there should be an easier way
>> using XSLT 2 but if there is I'm not thinking of it.
>>
>> Cheers,
>>
>> Eliot
>>
>> --
>> Eliot Kimber
>> http://contrext.com
>>
>>
>>
>>
>>
>
>
>
> --
> Cheers,
> Dimitre Novatchev
> ---------------------------------------
> Truly great madness cannot be achieved without significant intelligence.
> ---------------------------------------
> To invent, you need a good imagination and a pile of junk
> -------------------------------------
> Never fight an inanimate object
> -------------------------------------
> To avoid situations in which you might make mistakes may be the
> biggest mistake of all
> ------------------------------------
> Quality means doing it right when no one is looking.
> -------------------------------------
> You've achieved success in your field when you don't know whether what
> you're doing is work or play
> -------------------------------------
> To achieve the impossible dream, try going to sleep.
> -------------------------------------
> Facts do not cease to exist because they are ignored.
> -------------------------------------
> Typing monkeys will write all Shakespeare's works in 200yrs.Will they
> write all patents, too? :)
> -------------------------------------
> Sanity is madness put to good use.
> -------------------------------------
> I finally figured out the only reason to be alive is to enjoy it.

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