# zgrep -- a wrapper around a grep program that decompresses files as needed
# Adapted from a version sent by Charles Levert <charles@comm.polymtl.ca>
-# Copyright (C) 1998, 2001, 2002, 2006, 2007 Free Software Foundation
+# Copyright (C) 1998, 2001, 2002, 2006, 2007, 2009 Free Software Foundation
# Copyright (C) 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
+# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
# This program is distributed in the hope that it will be useful,
# 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
+bindir=@bindir@
+case $1 in
+--__bindir) bindir=${2?}; shift; shift;;
+esac
+PATH=$bindir:$PATH
+
grep='${GREP-grep}'
-version='z$grep (gzip) @VERSION@
-Copyright (C) 2007 Free Software Foundation, Inc.
+version='zgrep (gzip) @VERSION@
+Copyright (C) 2007, 2009-2010 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.
'
operands=
have_pat=0
+pat_on_stdin=0
files_with_matches=0
files_without_matches=0
no_filename=0
printf >&2 '%s: %s: option not supported\n' "$0" "$option"
exit 2;;
(-[ef]* | --file | --file=* | --reg*)
+ # The pattern is coming from a file rather than the command-line.
+ # If the file is actually stdin then we need to do a little
+ # magic, (since we use stdin to pass the gzip output to grep).
+ # So find a free fd and change the argument to then use this
+ # file descriptor for the pattern.
+ case $optarg in
+ (" '-'" | " '/dev/stdin'" | " '/dev/fd/0'")
+ pat_on_stdin=1
+ eval 'test -e .' 2>/dev/null \
+ && eval 'exists(){ test -e "$@"; }' \
+ || eval 'exists(){ test -r "$@" || test -w "$@"; }'
+ # Start search from 6 since the script already uses 3 and 5
+ fd=6
+ pat_fd=
+ while : ; do
+ if ! exists /proc/$$/fd/$fd; then
+ pat_fd=$fd
+ break;
+ fi
+ fd=$(expr $fd + 1)
+ if test $fd = 255; then
+ printf >&2 '%s: no free file descriptor\n' "$0"
+ exit 2
+ fi
+ done
+ optarg=/dev/fd/$pat_fd;
+ esac
have_pat=1;;
(--h | --he | --hel | --help)
echo "$usage" || exit 2
files_with_matches=1;;
(-L | --files-witho*)
files_without_matches=1;;
- (-h | --no-f*)
+ (--no-f*)
no_filename=1;;
(-V | --v | --ve | --ver | --vers | --versi | --versio | --version)
echo "$version" || exit 2
# Fail if gzip or grep (or sed) fails.
gzip_status=$(
exec 5>&1
+ if test $pat_on_stdin -eq 1; then
+ eval "exec $pat_fd<&0"
+ fi
(gzip -cdfq -- "$i" 5>&-; echo $? >&5) 3>&- |
if test $files_with_matches -eq 1; then
eval "$grep" >/dev/null && { printf '%s\n' "$i" || exit 2; }