#!/bin/sh
#======================================================================
# A Part of ``The Nihongo TeX installation Kit'' installer
# by Hideaki Togashi (hideak-t@ascii.co.jp)
#======================================================================
##
pkgname=amslatex
category=lt_packages
checkdir=share/texmf/tex/latex/packages/amslatex
## init
progname=`basename $0`
progdir=`dirname $0`
prefixdir=`kpsewhich -expand-var '$TEXMFMAIN' 2>&1 | sed -e s!/share/texmf!!`
[ "$prefixdir" = "" ] && prefixdir="/usr/local"
[ -d "$prefixdir" ] || prefixdir="/usr/local"
savelist=$prefixdir/share/ptexcd/$category/$pkgname
debug=false
help=false
gnutar=false
tarversion=`tar --version 2>&1`
case $tarversion in
  *GNU*) gnutar=true;;
esac

## begin of functions
usage()
{
cat << EOF
     usage : $progname [options]
        options
            --prefix-dir=dist_dir     (now, equal: $prefixdir)
                directory which "share/texmf" directory exists.
            --list-name=list          (now, equal: $savelist)
            --help
EOF
}
## end of functions

trap "exit 11" 1 2 3

## options
while [ $# -gt 0 ]; do
  case $1 in
    --prefix*=* | -prefix*=*)
      prefixdir=`echo $1 | sed -e 's/.*=//'`;;
    --list*=* | -list*=*)
      savelist=`echo $1 | sed -e 's/.*=//'`;;
    --no-i* | -no-i* | --debug* | -debug*)
      debug=true;;
    -*)
      debug=true
      help=true;;
    *) break;;
  esac
  shift
done

# check
if $gnutar; then
  true
else
  echo
  echo "Tar is not GNU tar.  Please use GNU tar." > /dev/stderr
  echo
  exit 1
fi
if [ ! -d $prefixdir ]; then
  echo
  echo No directory: $prefixdir > /dev/stderr
  echo
  help=true
else
  prefixdir=`(cd $prefixdir; pwd)`
fi
if [ ! -d $prefixdir/$checkdir ]; then
  echo
  echo No directory: $prefixdir/$checkdir > /dev/stderr
  echo
  help=true
fi
if [ ! -f $savelist ]; then
  echo
  echo No list: $savelist > /dev/stderr
  echo
  help=true
fi
if [ ! -f $progdir/$pkgname-diff.tar.gz ]; then
  echo
  echo No archive: $progdir/$pkgname-diff.tar.gz > /dev/stderr
  echo
  help=true
fi
if [ `whoami` != "root" ]; then
  echo
  echo "Instllation must be done by root!" > /dev/stderr
  echo
  help=true
fi

# help & exit
if $help; then
  usage
  exit 0
fi


if $debug; then
  echo tar --directory $prefixdir -xzf $progdir/$pkgname-diff.tar.gz
  tar tvzf $progdir/$pkgname-diff.tar.gz \
   | sed -e "sD.* \(share/.*\)D$prefixdir/\1D" -e '/\/$/d'
else
  tar --directory $prefixdir -xzf $progdir/$pkgname-diff.tar.gz
  tar tvzf $progdir/$pkgname-diff.tar.gz \
   | sed -e "sD.* \(share/.*\)D$prefixdir/\1D" -e '/\/$/d' \
   >> $savelist
  MakeTeXls-R
fi

echo All done! > /dev/stderr

exit 0