RCS wrapper for vi written by POSIX-shell script

rcsvi.sh

#!/bin/sh

#
# rcsvi
#
# @author Seiya Konno <seiya@uniba.jp>
#

target=$1

if [ "$target" = "" ] ; then
	exit -1
fi

if [ ! -f "$target" ] ; then
	exit -1
fi

tmpdir="/tmp/rcsvi"
if [ ! -d $tmpdir ] ; then
	mkdir -p $tmpdir
	chmod 777 $tmpdir
fi

rcsdiff "$target"
ret=$?

if [ $ret -eq 1 ] ; then
	echo -n "difference is detected! commit before editing? (Y/n/c) > "
	read ans

	basetarget=`basename $target`

	while :
	do
		case $ans in
			[Yy] )
				cp -p "$target" "$tmpdir/$basetarget.$$"
				yes | co -l "$target"
				cp -fp "$tmpdir/$basetarget.$$" "$target"
				ci -u "$target"
				break
				;;
			[Nn] )
				break
				;;
			[Cc] )
				exit -1
				;;
		esac
	done
elif [ $ret -eq 2 ] ; then
	rcsdir=`dirname $target`/RCS
	if [ ! -d $rcsdir ] ; then
		
		mkdir $rcsdir
	fi
	ci -u "$target"

elif [ $ret -ne 0 ] ; then
	exit -1
fi

co -l $1 && vim $1 && ci -u $1