diplodocus.org Git - nmh/blob - docs/historical/mh-6.8.5/miscellany/compress-4.0/zdiff

   1
   2 OPTIONS=
   3 FILES=
   4 for ARG
   5 do
   6         case "$ARG" in
   7         -*)     OPTIONS="$OPTIONS $ARG";;
   8         *)      FILES="$FILES $ARG";;
   9         esac
  10 done
  11 if test -z "$FILES"; then
  12         echo "Usage: zdiff [diff_options] file [file]"
  13         exit 1
  14 fi
  15 set $FILES
  16 if test $# -eq 1; then
  17         FILE=`expr $1 : '\(.*\)\.Z' '|' $1`
  18         zcat $FILE | diff $OPTIONS - $FILE
  19         STAT="$?"
  20 elif test $# -eq 2; then
  21         case "$1" in
  22         *.Z)    case "$2" in
  23                 *.Z)    F=`basename $2 .Z`
  24                         zcat $2 > /tmp/$F.$$
  25                         zcat $1 | diff $OPTIONS - /tmp/$F.$$
  26                         STAT="$?";;
  27                 *)      zcat $1 | diff $OPTIONS - $2;;
  28                 esac;;
  29         *)      case "$2" in
  30                 *.Z)    zcat $2 | diff $OPTIONS $1 -
  31                         STAT="$?";;
  32                 *)      diff $OPTIONS $1 $2
  33                         STAT="$?";;
  34                 esac;;
  35         esac
  36         exit "$STAT"
  37 else
  38         echo "Usage: zdiff [diff_options] file [file]"
  39         exit 1
  40 fi