usr.bin/rcs/src/merge.sh

   1
   2 #       $Id: merge.sh,v 1.1 1993/03/21 09:58:06 cgd Exp $
   3
   4 PATH=/bin:/usr/bin
   5 DIFF=/bin/diff
   6 DIFF3=/usr/local/lib/rdiff3
   7 p=w
   8 case $1 in
   9 -p)
  10         p='1,$p'
  11         shift
  12 esac
  13
  14 case $# in
  15 0|1|2)
  16         echo >&2 "merge: usage: merge [-p] file1 file2 file3"
  17         exit 1
  18 esac
  19
  20 case $p in
  21 w)
  22         if test ! -w $1
  23         then
  24                 echo >&2 "$1 not writeable"
  25                 exit 1
  26         fi
  27 esac
  28
  29 trap 's=$?; rm -f /tmp/d3a$$ /tmp/d3b$$; exit $s' 0
  30 trap exit 1 2 3 13 15
  31 umask 077
  32
  33 $DIFF $1 $3 >/tmp/d3a$$
  34 case $? in
  35 0|1) ;;
  36 *) exit
  37 esac
  38
  39 $DIFF $2 $3 >/tmp/d3b$$
  40 case $? in
  41 0|1) ;;
  42 *) exit
  43 esac
  44
  45 {
  46         $DIFF3 -E /tmp/d3a$$ /tmp/d3b$$ $1 $2 $3 $4 $5
  47         case $? in
  48         0) ;;
  49         1) echo >&2 merge: warning: 1 overlap during merge.;;
  50         *) echo >&2 merge: warning: $? overlaps during merge.
  51         esac
  52         echo $p
  53 } | ed - $1