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#!/bin/sh
#
# Regina - A Normal Surface Theory Calculator
# Tab Conversion Utility
#
# Copyright (c) 1999-2006, Ben Burton
# For further details contact Ben Burton (bab@debian.org).
#
# Usage: replacetabs <text-file> [ <text-file> ... ]
#
# Replaces each tab with four spaces in the given files.
#
# Requires: awk, diff
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License as
# published by the Free Software Foundation; either version 2 of the
# License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU General Public
# License along with this program; if not, write to the Free
# Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
# MA 02110-1301, USA.
#
set -e
# Command-line sanity check.
if [ -z "$1" ]; then
echo "Usage: replacetabs <text-file> [ <text-file> ... ]"
exit 1
fi
for srcfile
do tmpfile=$srcfile.tabs.tmp
if (awk '{gsub("\t", " "); print }' $srcfile > $tmpfile); then
if ! diff $srcfile $tmpfile > /dev/null; then
if (test -s $tmpfile); then
mv $tmpfile $srcfile
echo "$srcfile: Tabs replaced"
else
rm $tmpfile
echo "$srcfile: *** FAILURE ***"
fi
else
rm $tmpfile
# echo "$srcfile: Unchanged"
fi
else
rm $tmpfile
echo "$srcfile: *** FAILURE ***"
fi
done
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