Re: [xsl] creating multi-level TOC from existing list

["Martin Honnen martin.honnen@xxxxxx" <xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx>]

Am 05.06.2020 um 01:18 schrieb Charlie0 charlieo0@xxxxxxxxxxx:
> I need help with XSLT 2.0. I am completely stumped on how to proceed. I
> have tried doing string comparisons and that is not working. I am sure
> there is way to use grouping to accomplish what I need, but I just don't
> know how to create two separate groups and build the TOC I need. I have
> no code to show. Any help to put me in the right direction is appreciated.
>
> Below is the input, followed by the desired output. Text has been
> distorted due company policies.
>
> Input snippet:
>
> <toc>
>  B B B  <tocEntry title="01 VNGKNV">
>  B B B B B B B  <tocEntry title="0100 VNGKNV XSSVMBLY">
>  B B B B B B B B B B B  <tocEntry filename="M2390992350401.xml"
title="RVZXKR LUBV
> CKL FKLTVR XSSVMBLY"/>
>  B B B B B B B  </tocEntry>
>  B B B  </tocEntry>
>  B B B  <tocEntry title="01 VNGKNV">
>  B B B B B B B  <tocEntry title="0100 VNGKNV XSSVMBLY">
>  B B B B B B B B B B B  <tocEntry filename="M2812292350401.xml"
title="RVZLXCV
> HYDRXULKC RVSVRVCKR BRXCKVT"/>
>  B B B B B B B  </tocEntry>
>  B B B  </tocEntry>
>  B B B  <tocEntry title="01 VNGKNV">
>  B B B B B B B  <tocEntry title="0100 VNGKNV XSSVMBLY">
>  B B B B B B B B B B B  <tocEntry filename="M3007592350401.xml"
>  B B B B B B B B B B B B B B B  title="RVZLXCV VNGKNV FRCM SHKZZKNG/STCRXGV
CCNTXKNVR"/>
>  B B B B B B B  </tocEntry>
>  B B B  </tocEntry>
>  B B B  <tocEntry title="01 VNGKNV">
>  B B B B B B B  <tocEntry title="0102 CRXNKSHXFT">
>  B B B B B B B B B B B  <tocEntry filename="M2356292350401.xml"
>  B B B B B B B B B B B B B B B  title="RVZLXCV VKBRXTKCN DXMZVR XND
CRXNKSHXFT ZULLVY"/>
>  B B B B B B B  </tocEntry>
>  B B B  </tocEntry>
>  B B B  <tocEntry title="01 VNGKNV">
>  B B B B B B B  <tocEntry title="0102 CRXNKSHXFT">
>  B B B B B B B B B B B  <tocEntry filename="M2357392350401.xml"
title="RVZLXCV RVXR
> CRXNKSHXFT SVXL"/>
>  B B B B B B B  </tocEntry>
>  B B B  </tocEntry>
>  B B B  <tocEntry title="01 VNGKNV">
>  B B B B B B B  <tocEntry title="0103 FLYWHVVL XSSVMBLY">
>  B B B B B B B B B B B  <tocEntry filename="M2357292350401.xml"
title="RVZLXCV
> FLYWHVVL"/>
>  B B B B B B B  </tocEntry>
>  B B B  </tocEntry>
>  B B B  <tocEntry title="01 VNGKNV">
>  B B B B B B B  <tocEntry title="0103 FLYWHVVL XSSVMBLY">
>  B B B B B B B B B B B  <tocEntry filename="M2390892350401.xml"
title="RVZLXCV RVXR
> CRXNKSHXFT XDXZTVR"/>
>  B B B B B B B  </tocEntry>
>  B B B  </tocEntry>
>  B B B  <tocEntry title="03 FUVL SYSTVM">
>  B B B B B B B  <tocEntry title="0304 XKR CLVXNVR">
>  B B B B B B B B B B B  <tocEntry filename="M2142592350401.xml"
title="RVZLXCV XKR
> CLVXNVR BCCT"/>
>  B B B B B B B  </tocEntry>
>  B B B  </tocEntry>
>  B B B  <tocEntry title="03 FUVL SYSTVM">
>  B B B B B B B  <tocEntry title="0304 XKR CLVXNVR">
>  B B B B B B B B B B B  <tocEntry filename="M2376292350401.xml"
>  B B B B B B B B B B B B B B B  title="RVZLXCV TURBCCHXRGVR CCMZRVSSCR
KNTXKV
> ZRVSSURV/TVMZVRXTURV SVNSCR"/>
>  B B B B B B B  </tocEntry>
>  B B B  </tocEntry>
>  B B B  <tocEntry title="03 FUVL SYSTVM">
>  B B B B B B B  <tocEntry title="0305 SUZVRCHXRGVR, BLCWVR, TURBCCHXRGVR CR
> XLTKTUDV CCMZVNSXTCR">
>  B B B B B B B B B B B  <tocEntry filename="M2249792350401.xml"
title="RVZLXCV
> TURBCCHXRGVR "/>
>  B B B B B B B  </tocEntry>
>  B B B  </tocEntry>
> </toc>
>
> Desired output:
>
>
> <toc>
>  B B B  <tocEntry title="01 VNGKNV">
>  B B B B B B B  <tocEntry title="0100 VNGKNV XSSVMBLY">
>  B B B B B B B B B B B  <tocEntry filename="M2390992350401.xml"
title="RVZXKR LUBV
> CKL FKLTVR XSSVMBLY"/>
>  B B B B B B B  <tocEntry filename="M2812292350401.xml" title="RVZLXCV
> HYDRXULKC RVSVRVCKR BRXCKVT"/>
>  B B B B B B B B B B B  <tocEntry filename="M3007592350401.xml"
>  B B B B B B B B B B B B B B B  title="RVZLXCV VNGKNV FRCM SHKZZKNG/STCRXGV
> CCNTXKNVR"/></tocEntry>
>  B B B B B B B  <tocEntry title="0102 CRXNKSHXFT">
>  B B B B B B B B B B B  <tocEntry filename="M2356292350401.xml"
title="RVZLXCV
> VKBRXTKCN DXMZVR XND CRXNKSHXFT ZULLVY"/>
>  B B B B B B B B B B B  <tocEntry filename="M2357392350401.xml"
title="RVZLXCV RVXR
> CRXNKSHXFT SVXL"/>
>  B B B B B B B  </tocEntry>
>  B B B B B B B  <tocEntry title="0103 FLYWHVVL XSSVMBLY">
>  B B B B B B B B B B B  <tocEntry filename="M2357292350401.xml"
title="RVZLXCV
> FLYWHVVL"/>
>  B B B B B B B B B B B  <tocEntry filename="M2390892350401.xml"
title="RVZLXCV
> CRXNKSHXFT XDXZTVR"/>
>  B B B B B B B  </tocEntry>
>  B B B  </tocEntry>
>  B B B  <tocEntry title="03 FUVL SYSTVM">
>  B B B B B B B  <tocEntry title="0304 XKR CLVXNVR">
>  B B B B B B B B B B B  <tocEntry filename="M2142592350401.xml"
title="RVZLXCV XKR
> CLVXNVR BCCT"/>
>  B B B B B B B B B B B  <tocEntry filename="M2376292350401.xml"
>  B B B B B B B B B B B B B B B  title="RVZLXCV TURBCCHXRGVR CCMZRVSSCR
KNTXKV
> ZRVSSURV/TVMZVRXTURV SVNSCR"/>
>  B B B B B B B  </tocEntry>
>  B B B B B B B  <tocEntry title="0305 SUZVRCHXRGVR, BLCWVR, TURBCCHXRGVR CR
> XLTKTUDV CCMZVNSXTCR">
>  B B B B B B B B B B B  <tocEntry filename="M2249792350401.xml"
title="RVZLXCV
> TURBCCHXRGVR "/>
>  B B B B B B B  </tocEntry>
>  B B B  </tocEntry>
> </toc>


For two levels you can just nest two for-each-group

  <xsl:template match="toc">
      <xsl:copy>
          <xsl:for-each-group select="tocEntry" group-by="@title">
              <xsl:copy>
                  <xsl:apply-templates select="@*"/>
                  <xsl:for-each-group select="current-group()/tocEntry"
group-by="@title">
                      <xsl:copy>
                          <xsl:apply-templates select="@*,
current-group()/tocEntry"/>
                      </xsl:copy>
                  </xsl:for-each-group>
              </xsl:copy>
          </xsl:for-each-group>
      </xsl:copy>
  </xsl:template>

for arbitrary levels you would need to morph that into a recursive
function or template.