#!/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 1.1 1997-05-23 03:02:11 jwe Exp $'
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

: ${TEXMFMAIN=`kpsewhich -expand-var='$TEXMFMAIN'`}
if test -z "$TEXMFMAIN"; then
  echo "$0: No \$TEXMFMAIN; set the environment variable or in texmf.cnf." >&2
  exit 1
fi
: ${TEXMFLS_R=`kpsewhich -expand-var='$TEXMFLS_R'`}
test -n "$TEXMFLS_R" || TEXMFLS_R=$TEXMFMAIN
: ${TEXMFCNF_DIR=`kpsewhich -expand-var='$TEXMFCNF_DIR'`}
test -n "$TEXMFCNF_DIR" || TEXMFCNF_DIR=$TEXMFMAIN/web2c
. $TEXMFCNF_DIR/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; }

db_file=$TEXMFLS_R/ls-R

test -f $db_file || MakeTeXls-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