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Filename : mktexupd
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#!/bin/sh
# mktexupd -- update ls-R with a new entry.
# 
# Primarily written by Thomas Esser, Karl Berry, and Olaf Weber.
# Public domain.
# $Id: mktexupd 18383 2010-05-20 18:31:24Z karl $

version='$Id: mktexupd 18383 2010-05-20 18:31:24Z 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

# Common code for all scripts.
: ${MT_TEXMFMAIN=`kpsewhich --expand-path='$TEXMFMAIN'`}
: ${MT_MKTEX_OPT=`kpsewhich --format='web2c files' mktex.opt`}
test -n "$MT_MKTEX_OPT" || MT_MKTEX_OPT="$MT_TEXMFMAIN/web2c/mktex.opt"
if test ! -f "$MT_MKTEX_OPT"; then
  echo "$0: Cannot find mktex.opt; check your installation." >&2
  exit 1
fi

. "$MT_MKTEX_OPT"

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=$IFS; IFS=$SEP; set x `kpsewhich  -show-path=ls-R`; shift; IFS=$OIFS
TEXMFLS_R=
for d in "$@"; do
  case $dir in
    "") continue;;
    ${d}|${d}/*) TEXMFLS_R="$d"; break;;
  esac
done
test -n "$TEXMFLS_R" || exit 0
db_file="$TEXMFLS_R/ls-R"
db_file_lc="$TEXMFLS_R/ls-r"

test ! -f "$db_file" && test -f "$db_file_lc" && db_file="$db_file_lc"
test -f "$db_file" || { mktexlsr "$TEXMFLS_R"; exit; }
test -w "$db_file" || { echo "$0: $db_file unwritable." >&2; exit 1; }

test "x`sed '1s/
$//;1q' \"$db_file\"`" = "x$ls_R_magic" \
  || test "x`sed '1s/
$//;1q' \"$db_file\"`" = "x$old_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