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      1 #!/bin/sh -
      2 #
      3 # $NetBSD: zmore,v 1.5 2013/12/06 13:33:15 pettai Exp $
      4 #
      5 # $OpenBSD: zmore,v 1.6 2008/08/20 09:22:02 mpf Exp $
      6 #
      7 # Copyright (c) 2003 Todd C. Miller <Todd.Miller (at] 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 
     26 # Pull out any command line flags so we can pass them to more/less
     27 flags=
     28 while test $# -ne 0; do
     29 	case "$1" in
     30 		--)
     31 			shift
     32 			break
     33 			;;
     34 		-*)
     35 			flags="$flags $1"
     36 			shift
     37 			;;
     38 		*)
     39 			break
     40 			;;
     41 	esac
     42 done
     43 
     44 if [ `basename $0` = "zless" ] ; then
     45 	pager=${PAGER-less}
     46 else
     47 	pager=${PAGER-more}
     48 fi
     49 
     50 # No files means read from stdin
     51 if [ $# -eq 0 ]; then
     52 	gzip -cdfq 2>&1 | $pager $flags
     53 	exit 0
     54 fi
     55 
     56 oterm=`stty -g 2>/dev/null`
     57 while test $# -ne 0; do
     58 	gzip -cdfq "$1" 2>&1 | $pager $flags
     59 	prev="$1"
     60 	shift
     61 	if tty -s && test -n "$oterm" -a $# -gt 0; then
     62 		#echo -n "--More--(Next file: $1)"
     63 		echo -n "$prev (END) - Next: $1 "
     64 		trap "stty $oterm 2>/dev/null" 0 1 2 3 13 15
     65 		stty cbreak -echo 2>/dev/null
     66 		REPLY=`dd bs=1 count=1 2>/dev/null`
     67 		stty $oterm 2>/dev/null
     68 		trap - 0 1 2 3 13 15
     69 		echo
     70 		case "$REPLY" in
     71 			s)
     72 				shift
     73 				;;
     74 			e|q)
     75 				break
     76 				;;
     77 		esac
     78 	fi
     79 done
     80 exit 0
     81