xref: /dragonfly/contrib/xz/src/scripts/xzmore.in (revision cfd1aba3)
1#!@POSIX_SHELL@
2
3# Copyright (C) 2001, 2002, 2007 Free Software Foundation
4# Copyright (C) 1992, 1993 Jean-loup Gailly
5
6# Modified for XZ Utils by Andrew Dudman and Lasse Collin.
7
8# This program is free software; you can redistribute it and/or modify
9# it under the terms of the GNU General Public License as published by
10# the Free Software Foundation; either version 2 of the License, or
11# (at your option) any later version.
12
13# This program is distributed in the hope that it will be useful,
14# but WITHOUT ANY WARRANTY; without even the implied warranty of
15# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16# GNU General Public License for more details.
17
18#SET_PATH - This line is a placeholder to ease patching this script.
19
20# Instead of unsetting XZ_OPT, just make sure that xz will use file format
21# autodetection. This way memory usage limit and thread limit can be
22# specified via XZ_OPT.
23xz='@xz@ --format=auto'
24
25version='xzmore (@PACKAGE_NAME@) @VERSION@'
26
27usage="Usage: ${0##*/} [OPTION]... [FILE]...
28Like 'more', but operate on the uncompressed contents of xz compressed FILEs.
29
30Report bugs to <@PACKAGE_BUGREPORT@>."
31
32case $1 in
33	--help)    echo "$usage" || exit 2; exit;;
34	--version) echo "$version" || exit 2; exit;;
35esac
36
37oldtty=`stty -g 2>/dev/null`
38if stty -cbreak 2>/dev/null; then
39	cb='cbreak'; ncb='-cbreak'
40else
41	# 'stty min 1' resets eof to ^a on both SunOS and SysV!
42	cb='min 1 -icanon'; ncb='icanon eof ^d'
43fi
44if test $? -eq 0 && test -n "$oldtty"; then
45	trap 'stty $oldtty 2>/dev/null; exit' 0 2 3 5 10 13 15
46else
47	trap 'stty $ncb echo 2>/dev/null; exit' 0 2 3 5 10 13 15
48fi
49
50if test $# = 0; then
51	if test -t 0; then
52		echo "$usage"; exit 1
53	else
54		$xz -cdfq | eval "${PAGER:-more}"
55	fi
56else
57	FIRST=1
58	for FILE; do
59		< "$FILE" || continue
60		if test $FIRST -eq 0; then
61			printf "%s--More--(Next file: %s)" "" "$FILE"
62			stty $cb -echo 2>/dev/null
63			ANS=`dd bs=1 count=1 2>/dev/null`
64			stty $ncb echo 2>/dev/null
65			echo " "
66			case "$ANS" in
67				[eq]) exit;;
68			esac
69		fi
70		if test "$ANS" != 's'; then
71			echo "------> $FILE <------"
72			$xz -cdfq -- "$FILE" | eval "${PAGER:-more}"
73		fi
74		if test -t 1; then
75			FIRST=0
76		fi
77	done
78fi
79