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#!/bin/bash
#
# lpsmag CONFIGFILE
#
# creates a LaTeX file for the production
# a Sudoku magazine with lpsudoku.sty
#
# License: LPPL
#
CONFIGFILE="$1"
TEXFILE="lpsmag.tex"
TEXFILEBAK="${TEXFILE}.bak"
typeset -i COUNT=0
SUDOKUPP="6"
SUDOKUPPD="12"
#
if [ -z "$CONFIGFILE" ]
then
  echo "no config file"
  echo "Usage: `basename $0` configfile"
  exit 1
fi
#
exec 1> $TEXFILE
#
startpuzzles()
{
  echo "\lpsudokusetup{scale=0.75,width=6.8cm,fontsize=Large,cvoffset=-24pt}"
  echo "\setpuzzlecounter{1}"
}
#
startsolutions()
{
  echo "\lpsudokusetup{scale=0.5,width=4.6cm,fontsize=normalsize}"
  echo "\setpuzzlecounter{1}"
}
#
page()
{
  local name="$1"
  local difficulty="$2"
  qqwing --generate $SUDOKUPP --one-line --difficulty $difficulty >${name}.81
  cat ${name}.81 | qqwing --solve --one-line >${name}_sol.81
}
#
typesetpage()
{
  local name="$1"
  local last="$2"
  local puzzlenummer="uneven"
  COUNT=0
  echo "%startpage"
  for puzzle in `cat ${name}.81`
  do
    ((COUNT++))
    echo $puzzle >puzzle.81
    createlpsudoku -i puzzle.81
    if [ "$puzzlenummer" = "uneven" ]
    then
      echo "\hfill"
      # toggle even/uneven
      puzzlenummer="even"
    else
      # no \vfill after last lpsudoku
      # environment of the page
      if [ $COUNT -lt $SUDOKUPP ]
      then
        echo "\vfill"
      else
        if [ "$last" != "last" ]
        then
          echo "\clearpage"
        fi
      fi
      puzzlenummer="uneven"
    fi
  done
}
#
tspfor()
{
  local name="$1"
  local last="$2"
  local puzzlepos="one"
  for puzzle in `cat ${name}.81`
  do
    ((COUNT++))
    if [ $COUNT -eq 1 -o $COUNT -eq 7 ]
    then
      echo "%startpage"
    fi
    echo $puzzle >puzzle.81
    createlpsudoku -i puzzle.81
    if [ "$puzzlepos" = "one" ]
    then
      echo "\hfill"
      puzzlepos="two"
    elif [ "$puzzlepos" = "two" ]
    then
      echo "\hfill"
      puzzlepos="three"
    else
      if [ $COUNT -lt $SUDOKUPPD ]
      then
        echo "\vfill"
        puzzlepos="one"
      else
        if [ "$last" = "last" ]
        then
          puzzlepos="one"
        else
          echo "\clearpage"
          puzzlepos="one"
        fi
      fi
    fi
  done
}
#
typesetsolpage()
{
  local name1="$1_sol"
  local name2="$2_sol"
  local last="$3"
  COUNT=0
  tspfor $name1 $last
  tspfor $name2 $last
}
#
addcounterstyle()
{
  grep -ne'startpage' $TEXFILE | cut -d':' -f1 >csl.tmp
  for linenumber in `cat csl.tmp`
  do
    COUNT="$linenumber"
    ((COUNT++))
    echo "$COUNT a [counterstyle=left]" >>sed.tmp
    echo "$linenumber d" >>sed.tmp
  done
  sed -f sed.tmp $TEXFILE >$TEXFILEBAK
  rm $TEXFILE
  mv $TEXFILEBAK $TEXFILE
}
#
addpercent()
{
  sed -e's/$/%/' $TEXFILE >$TEXFILEBAK
  rm $TEXFILE
  mv $TEXFILEBAK $TEXFILE
}
#
deleteauxfiles()
{
  rm *.81
  rm *.tmp
}
#
cat >preamble.tmp <<EOF
\documentclass[a4paper]{article}%
\usepackage[bottom=3cm,top=3cm,left=2.7cm,right=2.7cm]{geometry}
\usepackage[width=5cm,scale=0.55,fontsize=normalsize]{lpsudoku}%
EOF
#
cat preamble.tmp
echo "\begin{document}"
#
. $CONFIGFILE
#
echo "\end{document}"
#
addcounterstyle
addpercent
deleteauxfiles
exit 0
#