zmore.in

   1 #!/bin/sh
   2
   3 # Copyright (C) 2001, 2002, 2007, 2010 Free Software Foundation
   4 # Copyright (C) 1992, 1993 Jean-loup Gailly
   5
   6 # This program is free software; you can redistribute it and/or modify
   7 # it under the terms of the GNU General Public License as published by
   8 # the Free Software Foundation; either version 3 of the License, or
   9 # (at your option) any later version.
  10
  11 # This program is distributed in the hope that it will be useful,
  12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 # GNU General Public License for more details.
  15
  16 # You should have received a copy of the GNU General Public License along
  17 # with this program; if not, write to the Free Software Foundation, Inc.,
  18 # 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  19
  20 bindir=@bindir@
  21 case $1 in
  22 --__bindir) bindir=${2?}; shift; shift;;
  23 esac
  24 PATH=$bindir:$PATH; export PATH
  25
  26 version="zmore (gzip) @VERSION@
  27 Copyright (C) 2010-2011 Free Software Foundation, Inc.
  28 This is free software.  You may redistribute copies of it under the terms of
  29 the GNU General Public License <http://www.gnu.org/licenses/gpl.html>.
  30 There is NO WARRANTY, to the extent permitted by law.
  31
  32 Written by Jean-loup Gailly."
  33
  34 usage="Usage: $0 [OPTION]... [FILE]...
  35 Like 'more', but operate on the uncompressed contents of any compressed FILEs.
  36
  37 Report bugs to <bug-gzip@gnu.org>."
  38
  39 if test "`echo -n a`" = "-n a"; then
  40   # looks like a SysV system:
  41   n1=''; n2='\c'
  42 else
  43   n1='-n'; n2=''
  44 fi
  45 oldtty=`stty -g 2>/dev/null`
  46 if stty -cbreak 2>/dev/null; then
  47   cb='cbreak'; ncb='-cbreak'
  48 else
  49   # 'stty min 1' resets eof to ^a on both SunOS and SysV!
  50   cb='min 1 -icanon'; ncb='icanon eof ^d'
  51 fi
  52 if test $? -eq 0 && test -n "$oldtty"; then
  53    trap 'stty $oldtty 2>/dev/null; exit' 0 2 3 5 10 13 15
  54 else
  55    trap 'stty $ncb echo 2>/dev/null; exit' 0 2 3 5 10 13 15
  56 fi
  57
  58 if test $# = 0; then
  59     if test -t 0; then
  60         echo >&2 "$0: invalid number of operands; try \`$0 --help' for help"
  61     else
  62         gzip -cdfq | eval ${PAGER-more}
  63     fi
  64 else
  65     FIRST=1
  66     for FILE
  67     do
  68         case $FILE in
  69         --h*) exec echo "$usage";;
  70         --v*) exec echo "$version";;
  71         esac
  72
  73         < "$FILE" || continue
  74         if test $FIRST -eq 0; then
  75                 echo $n1 "--More--(Next file: $FILE)$n2"
  76                 stty $cb -echo 2>/dev/null
  77                 ANS=`dd bs=1 count=1 2>/dev/null`
  78                 stty $ncb echo 2>/dev/null
  79                 echo " "
  80                 case "$ANS" in
  81                 [eq]) exit;;
  82                 esac
  83         fi
  84         if test "$ANS" != 's'; then
  85                 echo "------> $FILE <------"
  86                 gzip -cdfq -- "$FILE" | eval ${PAGER-more}
  87         fi
  88         if test -t 1; then
  89                 FIRST=0
  90         fi
  91     done
  92 fi