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#! /bin/sh
# rcsfreeze - assign a symbolic revision number to a configuration of RCS files
#
# Copyright (C) 2010-2013 Thien-Thi Nguyen
#
# This file is part of GNU RCS.
#
# GNU RCS 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 3 of the License, or
# (at your option) any later version.
#
# GNU RCS 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, see <http://www.gnu.org/licenses/>.
##
# Usage: rcsfreeze [symbolic-name]
#
# The idea is to run rcsfreeze each time a new version is checked
# in. A unique symbolic revision number (C_[number], where number
# is increased each time rcsfreeze is run) is then assigned to the most
# recent revision of each RCS file of the main trunk.
#
# If the command is invoked with an argument, then this
# argument is used as the symbolic name to freeze a configuration.
# The unique identifier is still generated
# and is listed in the log file but it will not appear as
# part of the symbolic revision name in the actual RCS file.
#
# A log message is requested from the user which is saved for future
# references.
#
# The shell script works only on all RCS files at one time.
# It is important that all changed files are checked in (there are
# no precautions against any error in this respect).
# file names:
# {RCS/}.rcsfreeze.ver version number
# {RCS/}.rscfreeze.log log messages, most recent first
##
version='rcsfreeze (GNU RCS) 5.9.0
Copyright (C) 2010-2013 Thien-Thi Nguyen
Copyright (C) 1990-1995 Paul Eggert
License GPLv3+; GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
Written by Stephan v. Bechtolsheim.'
usage ()
{
sed '/^##/,/^##/!d;/^##/d;s/^# //g;s/^#$//g' $0
}
if [ x"$1" = x--help ] ; then usage ; exit 0 ; fi
if [ x"$1" = x--version ] ; then echo "$version" ; exit 0 ; fi
PATH=/usr/local/bin:/bin:/usr/bin:/usr/ucb:$PATH
export PATH
DATE=`date` || exit
# Check whether we have an RCS subdirectory, so we can have the right
# prefix for our paths.
if test -d RCS
then RCSDIR=RCS/ EXT=
else RCSDIR= EXT=,v
fi
# Version number stuff, log message file
VERSIONFILE=${RCSDIR}.rcsfreeze.ver
LOGFILE=${RCSDIR}.rcsfreeze.log
# Initialize, rcsfreeze never run before in the current directory
test -r $VERSIONFILE || { echo 0 >$VERSIONFILE && >>$LOGFILE; } || exit
# Get Version number, increase it, write back to file.
VERSIONNUMBER=`cat $VERSIONFILE` &&
VERSIONNUMBER=`expr $VERSIONNUMBER + 1` &&
echo $VERSIONNUMBER >$VERSIONFILE || exit
# Symbolic Revision Number
SYMREV=C_$VERSIONNUMBER
# Allow the user to give a meaningful symbolic name to the revision.
SYMREVNAME=${1-$SYMREV}
echo >&2 "rcsfreeze: symbolic revision number computed: \"${SYMREV}\"
rcsfreeze: symbolic revision number used: \"${SYMREVNAME}\"
rcsfreeze: the two differ only when rcsfreeze invoked with argument
rcsfreeze: give log message, summarizing changes (end with EOF or single '.')" \
|| exit
# Stamp the logfile. Because we order the logfile the most recent
# first we will have to save everything right now in a temporary file.
TMPLOG=`mktemp -t` || exit
trap 'rm -f $TMPLOG; exit 1' 1 2 13 15
# Now ask for a log message, continously add to the log file
(
echo "Version: $SYMREVNAME($SYMREV), Date: $DATE
-----------" || exit
while read MESS
do
case $MESS in
.) break
esac
echo " $MESS" || exit
done
echo "-----------
" &&
cat $LOGFILE
) >$TMPLOG &&
# combine old and new logfiles
cp $TMPLOG $LOGFILE &&
rm -f $TMPLOG &&
# Now the real work begins by assigning a symbolic revision number
# to each rcs file. Take the most recent version on the default branch.
# If there are any .*,v files, throw them in too.
# But ignore RCS/.* files that do not end in ,v.
DOTFILES=
for DOTFILE in ${RCSDIR}.*,v
do
if test -f "$DOTFILE"
then
DOTFILES="${RCSDIR}.*,v"
break
fi
done
exec rcs -q -n$SYMREVNAME: ${RCSDIR}*$EXT $DOTFILES