gzip/zmore

   1 #!/bin/sh -
   2 #
   3 # $NetBSD: zmore,v 1.3 2004/03/29 09:59:42 wiz Exp $
   4 # $OpenBSD: zmore,v 1.4 2003/07/29 07:42:45 otto Exp $
   5 #
   6 #-
   7 # Copyright (c) 2003 Todd C. Miller <Todd.Miller@courtesan.com>
   8 #
   9 # Permission to use, copy, modify, and distribute this software for any
  10 # purpose with or without fee is hereby granted, provided that the above
  11 # copyright notice and this permission notice appear in all copies.
  12 #
  13 # THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  14 # WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  15 # MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  16 # ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  17 # WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  18 # ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  19 # OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  20 #
  21 # Sponsored in part by the Defense Advanced Research Projects
  22 # Agency (DARPA) and Air Force Research Laboratory, Air Force
  23 # Materiel Command, USAF, under agreement number F39502-99-1-0512.
  24 #
  25 # $FreeBSD: src/usr.bin/gzip/zmore,v 1.1 2007/01/26 10:19:07 delphij Exp $
  26
  27 if [ "$0" = "zless" ]; then
  28 zpager="less"
  29 else
  30 zpager="more"
  31 fi
  32
  33 # Pull out any command line flags so we can pass them to more/less
  34 flags=
  35 while test $# -ne 0; do
  36         case "$1" in
  37                 --)
  38                         shift
  39                         break
  40                         ;;
  41                 -*)
  42                         flags="$flags $1"
  43                         shift
  44                         ;;
  45                 *)
  46                         break
  47                         ;;
  48         esac
  49 done
  50
  51 # No files means read from stdin
  52 if [ $# -eq 0 ]; then
  53         gzip -cdfq 2>&1 | ${PAGER-${zpager}} $flags
  54         exit 0
  55 fi
  56
  57 oterm=`stty -g 2>/dev/null`
  58 while test $# -ne 0; do
  59         gzip -cdfq "$1" 2>&1 | ${PAGER-${zpager}} $flags
  60         prev="$1"
  61         shift
  62         if tty -s && test -n "$oterm" -a $# -gt 0; then
  63                 #echo -n "--More--(Next file: $1)"
  64                 echo -n "$prev (END) - Next: $1 "
  65                 trap "stty $oterm 2>/dev/null" 0 1 2 3 13 15
  66                 stty cbreak -echo 2>/dev/null
  67                 REPLY=`dd bs=1 count=1 2>/dev/null`
  68                 stty $oterm 2>/dev/null
  69                 trap - 0 1 2 3 13 15
  70                 echo
  71                 case "$REPLY" in
  72                         s)
  73                                 shift
  74                                 ;;
  75                         e|q)
  76                                 break
  77                                 ;;
  78                 esac
  79         fi
  80 done
  81 exit 0