# 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 Free Software Foundation
+# Copyright (C) 1998, 2001, 2002, 2006, 2007, 2009, 2010 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"; export PATH
-
-case "$0" in
-(*egrep) grep='${EGREP-egrep}' ;;
-(*fgrep) grep='${FGREP-fgrep}' ;;
-(*) grep='${GREP-grep}' ;;
+bindir=@bindir@
+case $1 in
+--__bindir) bindir=${2?}; shift; shift;;
esac
+PATH=$bindir:$PATH
-eval 'version="z'"$grep"' (gzip) @VERSION@
-Copyright (C) 2006 Free Software Foundation, Inc.
+grep='${GREP-grep}'
+
+version='zgrep (gzip) @VERSION@
+Copyright (C) 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.
-Written by Jean-loup Gailly."'
+Written by Jean-loup Gailly.'
-usage="Usage: z$grep [OPTION]... [-e] PATTERN [FILE]...
+usage="Usage: $0 [OPTION]... [-e] PATTERN [FILE]...
Look for instances of PATTERN in the input FILEs, using their
uncompressed contents if they are compressed.
-OPTIONs are the same as for '$grep'.
+OPTIONs are the same as for 'grep'.
Report bugs to <bug-gzip@gnu.org>."
'
operands=
have_pat=0
+pat_on_stdin=0
files_with_matches=0
files_without_matches=0
no_filename=0
optarg=
case $option in
- (-[0123456789abcdhHiIKLlnoqrRsTuUvVwxyzZ]?*)
+ (-[0123456789EFGHIKLPRTUVZabchilnoqrsuvwxyz]?*)
arg2=-\'$(expr "X${option}X" : 'X-.[0-9]*\(.*\)' | sed "$escape")
eval "set -- $arg2 "'${1+"$@"}'
option=$(expr "X$option" : 'X\(-.[0-9]*\)');;
(--binary-*=* | --[lm]a*=* | --reg*=*)
;;
- (-[ABCDefm] | --binary-* | --file | --[lm]a* | --reg*)
- have_optarg=1
+ (-[ABCDXdefm] | binary-* | --file | --[lm]a* | --reg*)
case ${1?"$option option requires an argument"} in
(*\'*)
optarg=" '"$(printf '%sX\n' "$1" | sed "$escape");;
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/$$/fd/$fd; then
+ pat_fd=$fd
+ break;
+ fi
+ fd=$(expr $fd + 1)
+ if test $fd = 255; then
+ printf >&2 '%s: no free file descriptor\n' "$0"
+ exit 2
+ fi
+ done
+ optarg=/dev/fd/$pat_fd;
+ esac
have_pat=1;;
(--h | --he | --hel | --help)
echo "$usage" || exit 2
files_with_matches=1;;
(-L | --files-witho*)
files_without_matches=1;;
- (--no-f*)
+ (-h | --no-f*)
no_filename=1;;
(-V | --v | --ve | --ver | --vers | --versi | --versio | --version)
echo "$version" || exit 2
# Fail if gzip or grep (or sed) fails.
gzip_status=$(
exec 5>&1
+ if test $pat_on_stdin -eq 1; then
+ eval "exec $pat_fd<&0"
+ fi
(gzip -cdfq -- "$i" 5>&-; echo $? >&5) 3>&- |
if test $files_with_matches -eq 1; then
eval "$grep" >/dev/null && { printf '%s\n' "$i" || exit 2; }
elif test $files_without_matches -eq 1; then
eval "$grep" >/dev/null || {
- r=$?
- if test $r -eq 1; then
- printf '%s\n' "$i" || r=2
- fi
- exit $r
+ r=$?
+ if test $r -eq 1; then
+ printf '%s\n' "$i" || r=2
+ fi
+ exit $r
}
elif test $with_filename -eq 0 &&
- { test $# -eq 1 || test $no_filename -eq 1; }; then
+ { test $# -eq 1 || test $no_filename -eq 1; }; then
eval "$grep"
else
case $i in
(*'
'* | *'&'* | *'\'* | *'|'*)
i=$(printf '%s\n' "$i" |
- sed '
- $!N
- $s/[&\|]/\\&/g
- $s/\n/\\n/g
- ');;
+ sed '
+ $!N
+ $s/[&\|]/\\&/g
+ $s/\n/\\n/g
+ ');;
esac
sed_script="s|^|$i:|"
# Fail if grep or sed fails.
r=$(
- exec 4>&1
- (eval "$grep" 4>&-; echo $? >&4) 3>&- | sed "$sed_script" >&3 4>&-
- ) || r=2
- exit $r
+ exec 4>&1
+ (eval "$grep" 4>&-; echo $? >&4) 3>&- | sed "$sed_script" >&3 4>&-
+ ) && exit $r
+ r=$?
+ test $r -gt 128 && test $r -le 143 && exit $r || exit 2
fi >&3 5>&-
)
r=$?
+ if test $r -gt 128 && test $r -le 143; then
+ kill -$(($r-128)) $$
+ exit $r
+ fi
test "$gzip_status" -eq 0 || test "$gzip_status" -eq 2 || r=2
test $res -lt $r && res=$r
done
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