#! /bin/sh -vx
#
# Copyright 2022-2023 Japanese TeX Development Community <issue@texjp.org>
# You may freely use, modify and/or distribute this file.

engine=eptex
testdir=eptests

KpsDir=${KpsDir:-../kpathsea}
BinDir=${BinDir:-.}
ExeExt=${ExeExt:-}
_kpsewhich=$KpsDir/kpsewhich$ExeExt
_tex=$BinDir/$engine$ExeExt

test -d $testdir || mkdir -p $testdir
rm -f $testdir/fn*.log $testdir/fn*.txt $testdir/fn*.tex fn*.tex

rc=0; err1=; err2=; err3=; err4=

TEXMFCNF=$srcdir/../kpathsea; export TEXMFCNF
TEXINPUTS="$testdir;."; export TEXINPUTS

$_kpsewhich -var-value=TEXMFCNF
$_kpsewhich -progname=$engine -var-value=TEXINPUTS
$_kpsewhich -progname=$engine -var-value=command_line_encoding
$_kpsewhich -progname=$engine -var-value=guess_input_kanji_encoding

for loc in C.UTF-8 C.utf8 en_US.UTF-8 en_US.utf8 ja_JP.UTF-8 ja_JP.utf8; do
  locale -a | grep "^$loc\$"
  ret=$?
  # For Slackware linux, we need to replace from utf8 to UTF-8
  if [ -f /etc/slackware-version ]; then
    loc=`echo $loc | sed -e "s/utf8/UTF-8/"`
  fi
  if [ $ret = 0 ]; then
    LC_ALL=$loc; LANGUAGE=$loc; export LC_ALL LANGUAGE
    break
  fi
done
if [ $ret != 0 ]; then
  # linux musl fails to run `locale -a` but seems to have C.UTF-8
  loc=C.UTF-8
  LC_ALL=$loc; LANGUAGE=$loc; export LC_ALL LANGUAGE
fi

if [ "$COMSPEC" != "" ] || [ "$ExeExt" = ".exe" ]; then
  echo "*** We guess OS is Windows."
  MyOS=Windows
  try_ienc="sjis"
else
  echo "*** We guess OS is not Windows."
  MyOS=nonWindows
  try_ienc="euc sjis"
fi
if [ "$ExeExt" = ".exe" ]; then
  opt_win=-windows
else
  opt_win=
fi

perl -s $srcdir/tests/fn-generate.perl $opt_win $testdir
pret=$?
if [ $pret != 0 ] && [ $pret != 239 ]; then
  exit 77
fi

# pTeX internal encoding
fenc="utf8"
for ienc in $try_ienc; do
for doc in fn-$fenc fnさざ波-$fenc; do

  echo '>>> Document:'$doc '  File Encoding:'$fenc '  Internal Encoding:'$ienc
  $_kpsewhich -progname=$engine $doc.tex || rc=10
  $_kpsewhich -progname=$engine fn±×÷§¶-utf8.tex || rc=11
  $_tex -ini -interaction nonstopmode -jobname=$doc-$ienc -kanji=$fenc --kanji-internal=$ienc --shell-escape --recorder $doc.tex >$testdir/$doc-$fenc-$ienc-term.log || \
      { rc=1 ; err1=$err1" $fenc:$ienc:$doc" ; }
  $_kpsewhich -progname=$engine $doc-tmp.tex || rc=12
  $_kpsewhich -progname=$engine fn±×÷§¶-utf8-tmp.tex || rc=13
  mv $doc-$ienc.txt $doc-$ienc.log $testdir/ || rc=14
  mv $doc-$ienc.txt $testdir/ || : echo "FIXME" # check *.fls
  diff $testdir/$doc-$ienc.txt $srcdir/tests/fn-$fenc.txt || \
      { rc=2 ; err2=$err2" $fenc:$ienc:$doc" ; }
  rm -f $testdir/fn±×÷§¶-utf8-tmp.tex

done
done

if [ $pret = 239 ]; then
  echo "*** skip tests for Shift_JIS & EUC-JP."
  exit 0
fi


# pTeX, regacy encoding
for fenc in sjis euc; do
for doc in fnさざ波-$fenc; do

  ienc=$fenc
  if [ $MyOS = Windows ]; then
    ienc="sjis"
  else
    if [ $fenc != sjis ]; then ienc="euc"; fi
  fi

  echo '>>> Document:'$doc '  File Encoding:'$fenc '  Internal Encoding:'$ienc
  $_kpsewhich -progname=$engine $doc.tex || rc=20
  $_kpsewhich -progname=$engine fn±×÷§¶-utf8.tex || rc=21
  $_tex -ini -interaction nonstopmode -jobname=$doc-$ienc -kanji=$fenc --kanji-internal=$ienc --shell-escape --recorder $doc.tex >$testdir/$doc-$fenc-$ienc-term.log || \
      { rc=3 ; err3=$err3" $fenc:$ienc:$doc" ; }
  $_kpsewhich -progname=$engine $doc-tmp.tex || rc=22
  $_kpsewhich -progname=$engine fn±×÷§¶-utf8-tmp.tex || rc=23
  mv $doc-$ienc.txt $doc-$ienc.log $doc-$ienc.fls $testdir/ || : echo "FIXME" # check *.fls
  diff $testdir/$doc-$ienc.txt $srcdir/tests/fn-$fenc.txt || \
      { rc=4 ; err4=$err4" $fenc:$ienc:$doc" ; }

done
done


if [ $rc -gt 0 ]; then
  if [ -n "$err1" ]; then echo ERROR1 $err1; fi
  if [ -n "$err2" ]; then echo ERROR2 $err2; fi
  if [ -n "$err3" ]; then echo ERROR3 $err3; fi
  if [ -n "$err4" ]; then echo ERROR4 $err4; fi
else
  echo PASS
fi
exit $rc