usr.bin/rcs/src/rcsfreeze.sh

   1 #! /bin/sh
   2 PATH=/usr/local/bin:/bin:/usr/bin:/usr/ucb
   3 #       'rcsfreeze' has the purpose of assigning a symbolic revision
   4 #       number to a set of RCS files, which form a valid configuration.
   5 #
   6 #       The idea is to run rcsfreeze each time a new version is checked
   7 #       in. A unique symbolic revision number (C_[number], where number
   8 #       is increased each time rcsfreeze is run) is then assigned to the most
   9 #       recent revision of each RCS file of the main trunk.
  10 #
  11 #       If the command is invoked with an argument, then this
  12 #       argument is used as the symbolic name to freeze a configuration.
  13 #       The unique identifier is still generated
  14 #       and is listed in the log file but it will not appear as
  15 #       part of the symbolic revision name in the actual RCS file.
  16 #
  17 #       A log message is requested from the user which is saved for future
  18 #       references.
  19 #
  20 #       The shell script works only on all RCS files at one time.
  21 #       It is important that all changed files are checked in (there are
  22 #       no precautions against any error in this respect).
  23 #       file names:
  24 #       {RCS/}rcsfreeze.version         for the version number
  25 #       {RCS/}rscfreeze.log             for the log messages, most recent
  26 #                                       logmessage first.
  27
  28 progname=`basename $0`
  29 DATE=`date`
  30 # Check whether we have an RCS subdirectory, so we can have the right
  31 # prefix for our paths.
  32 if [ -d RCS ] ; then
  33         RCSDIR=RCS
  34 else
  35         RCSDIR=.
  36 fi
  37
  38 # Version number stuff, log message file
  39 VERSIONFILE=$RCSDIR/.rcsfreeze.version
  40 LOGFILE=$RCSDIR/.rcsfreeze.log
  41 if [ ! -r $VERSIONFILE ] ; then
  42 # Initialize, rcsfreeze never run before in the current directory
  43     cat << EOF > $VERSIONFILE
  44 0
  45 EOF
  46     touch       $LOGFILE
  47 fi
  48
  49 # Get Version number, increase it, write back to file.
  50 VERSIONNUMBER=`cat $VERSIONFILE`
  51 VERSIONNUMBER=`expr $VERSIONNUMBER + 1`
  52     cat << EOF > $VERSIONFILE
  53 $VERSIONNUMBER
  54 EOF
  55
  56 # Symbolic Revision Number
  57 SYMREV=C_$VERSIONNUMBER
  58 # Allow the user to give a meaningful symbolic name to the revision.
  59 SYMREVNAME=${1-$SYMREV}
  60 echo    "$progname: symbolic revision number computed: \"$SYMREV\""
  61 echo    "$progname: symbolic revision number used:     \"$SYMREVNAME\""
  62 echo    "$progname: the two differ only when $progname invoked with argument"
  63
  64 # Stamp the logfile. Because we order the logfile the most recent
  65 # first we will have to save everything right now in a temporary file.
  66 TMPLOG=/tmp/rcsfreeze.$$.log.tmp
  67 echo "Version: $SYMREVNAME($SYMREV), Date: $DATE"     > $TMPLOG
  68 echo "-----------"                      >> $TMPLOG
  69 # Now ask for a log message, continously add to the log file
  70 echo    "$progname: give log message, summarizing changes"
  71 echo    "       (terminate with ^D or single '.')"
  72 while read MESS ; do
  73     if [ "$MESS" = '.' ] ; then break ; fi
  74     echo "  $MESS"      >> $TMPLOG
  75 done
  76 echo "-----------"                      >> $TMPLOG
  77 echo                                    >> $TMPLOG
  78
  79 # combine old and new logfiles
  80 TMPLOG2=$TMPLOG.2
  81 cat $TMPLOG $LOGFILE >  $TMPLOG2
  82 cp $TMPLOG2     $LOGFILE
  83 rm -f  $TMPLOG $TMPLOG2
  84
  85 # Now the real work begins by assigning a symbolic revision number
  86 # to each rcs file. Take the most recent version of the main trunk.
  87
  88 for FILE in $RCSDIR/* ; do
  89 #   get the revision number of the most recent revision
  90     REV=`rlog -h -d"$DATE" $FILE | fgrep 'head:' | awk ' { print $2 } ' `
  91     echo        "$progname: file name: \"$FILE\", Revision Number: $REV"
  92 #   assign symbolic name to it.
  93     rcs -q -n$SYMREVNAME:$REV $FILE
  94 done