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|
#!/bin/sh
# $NetBSD: pkgvi,v 1.2 2001/01/18 15:40:23 jlam Exp $
#
# Copyright (c) 2001 Tomasz Luchowski. All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
# 3. All advertising materials mentioning features or use of this software
# must display the following acknowledgement:
# This product includes software developed by Tomasz Luchowski for
# the NetBSD Project
# 4. The name of the author may not be used to endorse or promote products
# derived from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
# SUCH DAMAGE.
#
#
# Usage: pkgvi file
#
# The pkgvi utility runs user's favourite editor (it uses $PKG_EDITOR if
# defined, then it looks for $EDITOR, if none is defined, it uses vi) on
# copy of specified file. If no changes are made in the editor, nothing
# happens, else original file is stored as $filename.orig, and modified
# file is saved as $filename. If it founds $filename.orig, it behaves as
# normal editor.
#
# - Tomasz Luchowski <zuntum@eik.pl>
#
if [ "$PKGEDITOR" != "" ]; then
editor="$PKGEDITOR"
elif [ "$EDITOR" != "" ]; then
editor="$EDITOR"
else
editor="vi"
fi
progname=`basename $0`
if [ $# -eq 0 ]
then
echo echo Usage: $progname file >&2
exit 1
fi
file="$1"
tmp="$file.tmp"
if [ ! -f "$file" ]
then
echo "$progname: $file: No such file"
exit 2
fi
if [ -f $file.orig ]
then
$editor $file
echo "$progname: Backup already exists, for a diff type:"
echo "pkgdiff $file"
exit 0
fi
tmp="$file.$$"
cp $file $tmp
$editor $tmp
if cmp $file $tmp 2>&1 >/dev/null
then
echo File unchanged.
else
mv $file $file.orig
mv $tmp $file
echo $progname: File was modified. For a diff, type:
echo pkgdiff $file
fi
if [ -f $tmp ]
then
rm $tmp
fi
|
