#! /bin/awk -f
#############################################################################
##
#A  xpl2tex                    GAP Utility                     Goetz Pfeiffer
##
#A  @(#)$Id: xpl2tex,v 1.1 1993/10/19 13:11:21 goetz Rel $
##
#Y  Copyright  1992,    Lehrstuhl D fuer Mathematik,   RWTH Aachen,   Germany
##
##  This 'awk' script transforms a GAP example file into 'TeX' input.
##
#H  $Log: xpl2tex,v $
#H  Revision 1.1  1993/10/19  13:11:21  goetz
#H  Initial revision
#H
##
st == 0 { 
   if ($0 ~ /^ *$/) 
      st++ 
   next 
}

st == 1 {
   if ($0 ~ /^ *$/) 
      st++ 
   else if ($2 == "\end{document}") {
      st = 5
      print $2
   }
   else 
      print substr($0, 5) 
   next 
}

st == 2  { 
   if ($1 == "##") {
      printf("\n%s\n", substr($0, 5))
      st--
   }
   else {
      printf("\n|    %s", $0)
      st++
   }
   next 
}

st == 3  { 
   if ($0 ~ /^ *$/)
      st++
   else
      printf("\n    %s", $0)
   next 
}

st == 4  { 
   if ($0 ~ /^ *$/)
      printf("\n")
   else if ($1 == "##") {
      printf(" |\n\n%s\n", substr($0, 5))
      st = 1
   }
   else {
      printf("\n\n    %s", $0)
      st--
   }
   next 
}