zmore.in   [plain text]

#!/bin/sh

# Copyright (C) 2001, 2002, 2007 Free Software Foundation
# Copyright (C) 1992, 1993 Jean-loup Gailly

# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.

# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.

# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.

PATH="BINDIR:$PATH"; export PATH

version="zmore (gzip) @VERSION@
Copyright (C) 2007 Free Software Foundation, Inc.
This is free software.  You may redistribute copies of it under the terms of
the GNU General Public License <http://www.gnu.org/licenses/gpl.html>.
There is NO WARRANTY, to the extent permitted by law.

Written by Jean-loup Gailly."

usage="Usage: $0 [OPTION]... [FILE]...
Like 'more', but operate on the uncompressed contents of any compressed FILEs.

Report bugs to <bug-gzip@gnu.org>."

if test "`echo -n a`" = "-n a"; then
  # looks like a SysV system:
  n1=''; n2='\c'
else
  n1='-n'; n2=''
fi
oldtty=`stty -g 2>/dev/null`
if stty -cbreak 2>/dev/null; then
  cb='cbreak'; ncb='-cbreak'
else
  # 'stty min 1' resets eof to ^a on both SunOS and SysV!
  cb='min 1 -icanon'; ncb='icanon eof ^d'
fi
if test $? -eq 0 && test -n "$oldtty"; then
   trap 'stty $oldtty 2>/dev/null; exit' 0 2 3 5 10 13 15
else
   trap 'stty $ncb echo 2>/dev/null; exit' 0 2 3 5 10 13 15
fi

if test $# = 0; then
    if test -t 0; then
	echo "$usage"
    else
	gzip -cdfq | eval ${PAGER-more}
    fi
else
    FIRST=1
    for FILE
    do
	case $FILE in
	--h*) exec echo "$usage";;
	--v*) exec echo "$version";;
	esac

	< "$FILE" || continue
	if test $FIRST -eq 0; then
		echo $n1 "--More--(Next file: $FILE)$n2"
		stty $cb -echo 2>/dev/null
		ANS=`dd bs=1 count=1 2>/dev/null`
		stty $ncb echo 2>/dev/null
		echo " "
		case "$ANS" in
		[eq]) exit;;
		esac
	fi
	if test "$ANS" != 's'; then
		echo "------> $FILE <------"
		gzip -cdfq -- "$FILE" | eval ${PAGER-more}
	fi
	if test -t 1; then
		FIRST=0
	fi
    done
fi