external/bsd/bzip2/dist/bzmore

   1 #!/bin/sh
   2
   3 # Bzmore wrapped for bzip2,
   4 # adapted from zmore by Philippe Troin <phil@fifi.org> for Debian GNU/Linux.
   5
   6 PATH="/usr/bin:$PATH"; export PATH
   7
   8 prog=`echo $0 | sed 's|.*/||'`
   9 case "$prog" in
  10         *less)  more=less       ;;
  11         *)      more=more       ;;
  12 esac
  13
  14 if test "`echo -n a`" = "-n a"; then
  15   # looks like a SysV system:
  16   n1=''; n2='\c'
  17 else
  18   n1='-n'; n2=''
  19 fi
  20 oldtty=`stty -g 2>/dev/null`
  21 if stty -cbreak 2>/dev/null; then
  22   cb='cbreak'; ncb='-cbreak'
  23 else
  24   # 'stty min 1' resets eof to ^a on both SunOS and SysV!
  25   cb='min 1 -icanon'; ncb='icanon eof ^d'
  26 fi
  27 if test $? -eq 0 -a -n "$oldtty"; then
  28    trap 'stty $oldtty 2>/dev/null; exit' 0 2 3 5 10 13 15
  29 else
  30    trap 'stty $ncb echo 2>/dev/null; exit' 0 2 3 5 10 13 15
  31 fi
  32
  33 if test $# = 0; then
  34     if test -t 0; then
  35         echo usage: $prog files...
  36     else
  37         bzip2 -cdfq | eval $more
  38     fi
  39 else
  40     FIRST=1
  41     for FILE
  42     do
  43         if test $FIRST -eq 0; then
  44                 echo $n1 "--More--(Next file: $FILE)$n2"
  45                 stty $cb -echo 2>/dev/null
  46                 ANS=`dd bs=1 count=1 2>/dev/null`
  47                 stty $ncb echo 2>/dev/null
  48                 echo " "
  49                 if test "$ANS" = 'e' -o "$ANS" = 'q'; then
  50                         exit
  51                 fi
  52         fi
  53         if test "$ANS" != 's'; then
  54                 echo "------> $FILE <------"
  55                 bzip2 -cdfq "$FILE" | eval $more
  56         fi
  57         if test -t; then
  58                 FIRST=0
  59         fi
  60     done
  61 fi