#! /bin/sh
# map batch-call wrapper.
# To be called by enca, don't use directly. See enca(1) for calling convention.
#
# Copyright (C) 2000-2003 David Necas (Yeti) <yeti@physics.muni.cz>.
# This is free software; it can be copied and/or modified under the terms of
# version 2 of GNU General Public License, see COPYING for details. There is
# NO WARRANTY; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
transform_enc_name() {
echo "$1" | sed -e 's:/.*::'
}
if test "x$3" = "x"; then
echo "$0 has to be called by enca" 1>&2
exit 1
fi
umask 077
inenc=`transform_enc_name "$1"`
outenc=`transform_enc_name "$2"`
if test "$4" = "-"; then
# Note map returns 0 on failure and 1 on success!
if map --from "$inenc" --to "$outenc" <"$3"; then
echo "$0: map --from $inenc --to $outenc failed" 1>&2
rm -- "$3"
exit 1
else
rm -- "$3"
fi
else
temp=@SHELL_RANDOM_FILENAME@ || exit 1
# Note map returns 0 on failure and 1 on success!
if map --from "$inenc" --to "$outenc" <"$3" >"$temp"; then
echo "$0: map --from $inenc --to $outenc <$3 failed, file $3 unchanged" 1>&2
rm -f $temp
exit 1
else
# use cat > to preserve permissions
cat $temp >"$3"
fi
rm -f $temp
fi