git.chise.org Git - chise/xemacs-chise.git.1/blob - lib-src/vcdiff

   1 #!/bin/sh
   2 #
   3 # Enhanced sccs diff utility for use with vc mode.
   4 # This version is more compatible with rcsdiff(1).
   5 #
   6 #       !Id: vcdiff,v 1.4 1993/12/03 09:29:18 eggert Exp !
   7 #
   8 # Modified by: vladimir@Eng.Sun.COM on 95-06-07
   9 # * Made sure that file arguments are specifed as s.<filename>.
  10 # * Switched the assignments to $f inside the 3rd and 4th case statements of
  11 #   the first for-loop
  12 # * Removed the incorrect initialization of sid1 before the first for-loop.
  13 #
  14
  15 DIFF="diff"
  16 usage="$0: Usage: vcdiff [--brief] [-q] [-r<sid1>] [-r<sid2>] [diffopts] sccsfile..."
  17
  18 PATH=$PATH:/usr/ccs/bin:/usr/sccs # common SCCS hangouts
  19
  20 echo=
  21 sid1= sid2=
  22
  23 for f
  24 do
  25         case $f in
  26         -*)
  27                 case $f in
  28                 --brief)
  29                         DIFF=cmp;;
  30                 -q)
  31                         echo=:;;
  32                 -r?*)
  33                         case $sid1 in
  34                         -r*)
  35                                 sid2=$f
  36                                 ;;
  37                         *)
  38                                 case $sid2 in
  39                                   ?*) echo "$usage" >&2; exit 2 ;;
  40                                 esac
  41                                 sid1=$f
  42                                 ;;
  43                         esac
  44                         ;;
  45                 *)
  46                         options="$options $f"
  47                         ;;
  48                 esac
  49                 shift
  50                 ;;
  51         *)
  52                 break
  53                 ;;
  54         esac
  55 done
  56
  57 case $# in
  58 0)
  59         echo "$usage" >&2
  60         exit 2
  61 esac
  62
  63
  64 rev1= rev2= status=0
  65 trap 'status=2; exit' 1 2 13 15
  66 trap 'rm -f $rev1 $rev2 || status=2; exit $status' 0
  67
  68 for f
  69 do
  70   s=2
  71
  72   # For files under SCCS control, fixup the file name to be the s. filename
  73   if [ -d SCCS ]; then
  74     if [ $f = `echo $f | sed -e 's|SCCS/s.||'` ]; then
  75       f="SCCS/s.$f"
  76     fi
  77   fi
  78
  79         case $f in
  80         s.* | */s.*)
  81                 if
  82                         rev1=/tmp/geta$$
  83                         get -s -p -k $sid1 "$f" > $rev1 &&
  84                         case $sid2 in
  85                         '')
  86                                 workfile=`expr " /$f" : '.*/s.\(.*\)'`
  87                                 ;;
  88                         *)
  89                                 rev2=/tmp/getb$$
  90                                 get -s -p -k $sid2 "$f" > $rev2
  91                                 workfile=$rev2
  92                         esac
  93                 then
  94                         $echo $DIFF $options $sid1 $sid2 $workfile >&2
  95                         $DIFF $options $rev1 $workfile
  96                         s=$?
  97                 fi
  98                 ;;
  99         *)
 100                 echo "$0: $f is not an SCCS file" >&2
 101         esac
 102
 103         if test $status -lt $s
 104         then status=$s
 105         fi
 106 done