xref: /freebsd/usr.bin/gzip/zmore (revision 1669d8afc64812c8d2d1d147ae1fd42ff441e1b1)
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# $FreeBSD$
26
27# Pull out any command line flags so we can pass them to more/less
28flags=
29while test $# -ne 0; do
30	case "$1" in
31		--)
32			shift
33			break
34			;;
35		-*)
36			flags="$flags $1"
37			shift
38			;;
39		*)
40			break
41			;;
42	esac
43done
44
45# No files means read from stdin
46if [ $# -eq 0 ]; then
47	gzip -cdfq 2>&1 | ${PAGER-more} $flags
48	exit 0
49fi
50
51oterm=`stty -g 2>/dev/null`
52while test $# -ne 0; do
53	gzip -cdfq "$1" 2>&1 | ${PAGER-more} $flags
54	prev="$1"
55	shift
56	if tty -s && test -n "$oterm" -a $# -gt 0; then
57		#echo -n "--More--(Next file: $1)"
58		echo -n "$prev (END) - Next: $1 "
59		trap "stty $oterm 2>/dev/null" 0 1 2 3 13 15
60		stty cbreak -echo 2>/dev/null
61		REPLY=`dd bs=1 count=1 2>/dev/null`
62		stty $oterm 2>/dev/null
63		trap - 0 1 2 3 13 15
64		echo
65		case "$REPLY" in
66			s)
67				shift
68				;;
69			e|q)
70				break
71				;;
72		esac
73	fi
74done
75exit 0
76