#!/bin/sh
# MakeTeXupdate -- update ls-R with a new entry.
# 
# te@informatik.uni-hannover.de and kb@mail.tug.org. Public domain.

version='$Id: MakeTeXupdate,v 1.7 1997/02/08 15:52:15 karl Exp karl $'
usage="Usage: $0 DIR FILE.
  Update the ls-R file with an entry for FILE in DIR."
mt_min_args=2
mt_max_args=2

# The main system texmf tree:
: ${TEXMFMAIN=`kpsewhich -expand-var='$TEXMFMAIN'`}
if test -z "$TEXMFMAIN"; then
  echo "$0: No \$TEXMFMAIN; set the environment variable or in texmf.cnf." >&2
  exit 1
fi

. $TEXMFMAIN/web2c/MakeTeXcommon

test $# -eq 2 || { echo "$usage" >&2; exit 1; }
dir=$1
file=$2
test -d "$dir" || { echo "$0: $dir not a directory." >&2; exit 1; }
test -f "$dir/$file" || { echo "$0: $dir/$file not a file." >&2; exit 1; }

OIFS=$IFS; IFS=:; set x `kpsewhich  -show-path=ls-R`; shift; IFS=$OIFS
TEXMFLS_R=
for d in "$@"; do
  case $dir in
    ${d}*) TEXMFLS_R=$d; break;;
  esac
done
test -n "$TEXMFLS_R" || exit 1
db_file=$TEXMFLS_R/ls-R

test -f $db_file || MakeTeXls-R $TEXMFLS_R
test -f $db_file || { echo "$0: $db_file does not exist." >&2; exit 1; }
test -w "$db_file" || { echo "$0: $db_file unwritable." >&2; exit 1; }

test "`sed 1q $db_file`" = "$ls_R_magic" \
  || { echo "$0: $db_file lacks magic string \`$ls_R_magic'." >&2; exit 1; }

# Change `$TEXMFLS_R/' to `./'.
dir=`echo $dir | sed "s@^$TEXMFLS_R/@./@g"`

# May as well always put in a new directory entry; presumably cron will
# come along soon enough and clean things up.
echo "$dir:" >>$db_file
echo "$file" >>$db_file

exit 0