Two pass tag processing example

Two pass XML tag processing example

Imagine the next XML structure:

<float>
  <figure file="hacker.jpg" context="width=3cm" />
  <figure file="cow.pdf" context="width=.5ctx-var-textwidth;" />
  <caption>Cow and hacker.</caption>
</float>

There can be arbitrary number of figures inside a <float> tag. All figures share a single caption. It is desired to typeset them using \placefigure and several \externalfigure. See also relative width specification for th second figure (.5\textwidth).

Solution is by two pass <float> processing (saving via \defineXMLenvironmentsave and flushes via \XMLflush) with different caption and figure definitions:

\starttext

\defineXMLentity[ctx-var-textwidth] {\textwidth}

\defineXMLenvironmentsave
  [float]
  {\bgroup
   \defineXMLsave[caption]%
   \defineXMLignore[figure]}
  {\XMLflush{float}%
   \defineXMLignore
     [caption]
   \defineXMLcommand
     [figure]
     [file=dummy,context=]
     {\expanded{\externalfigure
       [\XMLflush{dir-fig}\XMLop{file}][\XMLop{context}]}%
      \kern1em
      \ignorespaces}%
   \placefigure
     {\XMLflush{caption}}
     {\hbox{\ignorespaces\XMLflush{float}\removeunwantedspaces}}%
   \egroup}

\startXMLdata

<float>
  <figure file="cow.pdf" context="width=.5ctx-var-textwidth;" />
  <figure file="hacker.jpg" context="width=3cm" />
  <caption>Cow and hacker.</caption>
</float>

\stopXMLdata

\stoptext

http://allsex.erosfreehost.com/adult/ http://allsex.erosfreehost.com/amateur/ http://allsex.erosfreehost.com/anal_sex/ http://allsex.erosfreehost.com/sex_story/ http://allsex.erosfreehost.com/big_tits/ http://allsex.erosfreehost.com/bondage/ http://allsex.erosfreehost.com/dating/ http://allsex.erosfreehost.com/erotic/ http://allsex.erosfreehost.com/gay/ http://allsex.erosfreehost.com/group_sex/ http://allsex.erosfreehost.com/hardcore/ http://allsex.erosfreehost.com/lesbian/ http://allsex.erosfreehost.com/mature_sex/ http://allsex.erosfreehost.com/oral_sex/ http://allsex.erosfreehost.com/allsex/ http://allsex.erosfreehost.com/teen/ http://derimrin10.sexushost.com/ http://derimrin18.sexushost.com/ http://derimrin20.sexushost.com/ http://derimrin21.sexushost.com/ http://derimrin22.sexushost.com/ http://casino.bo.pl/ http://youdebt.80.pl/ http://phen.bo.pl/ http://store.slave.ca/adaware/ http://store.slave.ca/adipex/ http://store.slave.ca/ambien/ http://store.slave.ca/antivirus/ http://store.slave.ca/betting/ http://store.slave.ca/bingo/ http://store.slave.ca/blackjack/ http://store.slave.ca/business/ http://store.slave.ca/car-insurance/ http://store.slave.ca/carisoprodol/ http://store.slave.ca/cars/ http://store.slave.ca/cash-advance/ http://store.slave.ca/cialis/ http://store.slave.ca/credit/ http://store.slave.ca/dating/ http://store.slave.ca/debt-consolidation/ http://store.slave.ca/didrex/ http://store.slave.ca/diet-pills/ http://store.slave.ca/domain-name/ http://store.slave.ca/fioricet/ http://store.slave.ca/furniture/ http://store.slave.ca/gambling/ http://store.slave.ca/health-insurance/ http://store.slave.ca/hydrocodone/ http://store.slave.ca/insurance/ http://store.slave.ca/life-insurance/ http://store.slave.ca/loans/ http://store.slave.ca/lortab/ http://store.slave.ca/mortgage/ http://store.slave.ca/online-casino/ http://store.slave.ca/online-pharmacy/ http://store.slave.ca/penis-enlargement/ http://store.slave.ca/phentermine/ http://store.slave.ca/poker/ http://store.slave.ca/prescription-drugs/ http://store.slave.ca/roulette/ http://store.slave.ca/spyware/ http://store.slave.ca/texas-holdem/ http://store.slave.ca/tramadol/ http://store.slave.ca/ultram/ http://store.slave.ca/valium/ http://store.slave.ca/viagra/ http://store.slave.ca/vicodin/ http://store.slave.ca/web-hosting/ http://store.slave.ca/weight-loss/ http://store.slave.ca/xanax/ http://allsex.filthhost.com/adult/ http://allsex.filthhost.com/amateur/ http://allsex.filthhost.com/anal_sex/ http://allsex.filthhost.com/animal_sex/ http://allsex.filthhost.com/big_tits/ http://allsex.filthhost.com/bondage/ http://allsex.filthhost.com/dating/ http://allsex.filthhost.com/erotic/ http://allsex.filthhost.com/gay/ http://allsex.filthhost.com/group_sex/ http://allsex.filthhost.com/hardcore/ http://allsex.filthhost.com/lesbian/ http://allsex.filthhost.com/mature_sex/ http://allsex.filthhost.com/oral_sex/ http://allsex.filthhost.com/poker/ http://allsex.filthhost.com/teen/