-:
#!/bin/sh
# 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 Free Software Foundation
+# Copyright (C) 1998, 2001-2002, 2006-2007, 2009-2018 Free Software Foundation,
+# Inc.
+
# 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, or (at your option)
-# any later version.
+# 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,
# 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., 59 Temple Place - Suite 330, Boston, MA
-# 02111-1307, USA.
+# 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.
+
+grep='${GREP-'\''@GREP@'\''}'
+
+version='zgrep (gzip) @VERSION@
+Copyright (C) 2010-2018 Free Software Foundation, Inc.
+This is free software. You may redistribute copies of it under the terms of
+the GNU General Public License <https://www.gnu.org/licenses/gpl.html>.
+There is NO WARRANTY, to the extent permitted by law.
+
+Written by Jean-loup Gailly.'
-PATH="BINDIR:$PATH"; export PATH
+usage="Usage: $0 [OPTION]... [-e] PATTERN [FILE]...
+Look for instances of PATTERN in the input FILEs, using their
+uncompressed contents if they are compressed.
-prog=`echo "$0" | sed 's|.*/||'`
-case "$prog" in
- *egrep) grep=${EGREP-egrep} ;;
- *fgrep) grep=${FGREP-fgrep} ;;
- *) grep=${GREP-grep} ;;
-esac
+OPTIONs are the same as for 'grep', except that the following 'grep'
+options are not supported: --dereference-recursive (-R), --directories (-d),
+--exclude, --exclude-from, --exclude-dir, --include, --null (-Z),
+--null-data (-z), and --recursive (-r).
-pat=""
-after_dash_dash=""
+Report bugs to <bug-gzip@gnu.org>."
+
+# sed script to escape all ' for the shell, and then (to handle trailing
+# newlines correctly) append ' to the last line.
+escape='
+ s/'\''/'\''\\'\'''\''/g
+ $s/$/'\''/
+'
+operands=
+have_pat=0
files_with_matches=0
files_without_matches=0
no_filename=0
with_filename=0
+pattmp=
while test $# -ne 0; do
- case "$after_dash_dash$1" in
- --d* | --rec*) echo >&2 "$0: $1: option not supported"; exit 2;;
- --files-with-*) files_with_matches=1;;
- --files-witho*) files_without_matches=1;;
- --no-f*) no_filename=1;;
- --wi*) with_filename=1;;
- --*) ;;
- -*)
- case "$1" in
- -*[dr]*) echo >&2 "$0: $1: option not supported"; exit 2;;
- esac
- case "$1" in
- -*H*) with_filename=1;;
- esac
- case "$1" in
- -*h*) no_filename=1;;
- esac
- case "$1" in
- -*L*) files_without_matches=1;;
- esac
- case "$1" in
- -*l*) files_with_matches=1;;
- esac;;
+ option=$1
+ shift
+ optarg=
+
+ case $option in
+ (-[0123456789EFGHIKLPRTUVZabchilnoqrsuvwxyz]*[!0123456789]*)
+ arg2=-\'$(expr "X$option" : 'X-.[0-9]*\(.*\)' | sed "$escape")
+ eval "set -- $arg2 "'${1+"$@"}'
+ option=$(expr "X$option" : 'X\(-.[0-9]*\)');;
+ (--binary-*=* | --[lm]a*=* | --reg*=*)
+ ;;
+ (-[ABCDXdefm] | binary-* | --file | --[lm]a* | --reg*)
+ case ${1?"$option option requires an argument"} in
+ (*\'*)
+ optarg=" '"$(printf '%s\n' "$1" | sed "$escape");;
+ (*)
+ optarg=" '$1'";;
+ esac
+ shift;;
+ (-f?*\'*)
+ optarg=" '"$(expr "X$option" : 'X-f\(.*\)' | sed "$escape")
+ option=-f;;
+ (-f?*)
+ optarg=" '"$(expr "X$option" : 'X-f\(.*\)')\'
+ option=-f;;
+ (--file=*\'*)
+ optarg=" '"$(expr "X$option" : 'X--file=\(.*\)' | sed "$escape")
+ option=--file;;
+ (--file=*)
+ optarg=" '"$(expr "X$option" : 'X--file=\(.*\)')\'
+ option=--file;;
+ (--)
+ break;;
+ (-?*)
+ ;;
+ (*)
+ case $option in
+ (*\'*)
+ operands="$operands '"$(printf '%s\n' "$option" | sed "$escape");;
+ (*)
+ operands="$operands '$option'";;
+ esac
+ ${POSIXLY_CORRECT+break}
+ continue;;
+ esac
+
+ case $option in
+ (-[drRzZ] | --di* | --exc* | --inc* | --rec* | --nu*)
+ printf >&2 '%s: %s: option not supported\n' "$0" "$option"
+ exit 2;;
+ (-e* | --reg*)
+ have_pat=1;;
+ (-f | --file)
+ # 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.
+ # Similarly if it is not a regular file, since it might be read repeatedly.
+ # In either of these two cases, copy the pattern into a temporary file,
+ # and use that file instead. The pattern might contain null bytes,
+ # so we cannot simply switch to -e here.
+ if case $optarg in
+ (" '-'" | " '/dev/stdin'" | " '/dev/fd/0'")
+ :;;
+ (*)
+ eval "test ! -f$optarg";;
+ esac
+ then
+ if test -n "$pattmp"; then
+ eval "cat --$optarg" >>"$pattmp" || exit 2
+ continue
+ fi
+ trap '
+ test -n "$pattmp" && rm -f "$pattmp"
+ (exit 2); exit 2
+ ' HUP INT PIPE TERM 0
+ case $TMPDIR in
+ / | /*/) ;;
+ /*) TMPDIR=$TMPDIR/;;
+ *) TMPDIR=/tmp/;;
+ esac
+ if type mktemp >/dev/null 2>&1; then
+ pattmp=$(mktemp "${TMPDIR}zgrepXXXXXXXXX") || exit 2
+ else
+ set -C
+ pattmp=${TMPDIR}zgrep$$
+ fi
+ eval "cat --$optarg" >"$pattmp" || exit 2
+ optarg=' "$pattmp"'
+ fi
+ have_pat=1;;
+ (--h | --he | --hel | --help)
+ printf '%s\n' "$usage" || exit 2
+ exit;;
+ (-H | --wi | --wit | --with | --with- | --with-f | --with-fi \
+ | --with-fil | --with-file | --with-filen | --with-filena | --with-filenam \
+ | --with-filename)
+ with_filename=1
+ continue;;
+ (-l | --files-with-*)
+ files_with_matches=1;;
+ (-L | --files-witho*)
+ files_without_matches=1;;
+ (-h | --no-f*)
+ no_filename=1;;
+ (-V | --v | --ve | --ver | --vers | --versi | --versio | --version)
+ printf '%s\n' "$version" || exit 2
+ exit;;
esac
- case "$after_dash_dash$1" in
- -[ef]) opt="$opt $1"; shift; pat="$1"
- if test "$grep" = grep; then # grep is buggy with -e on SVR4
- grep=egrep
- fi;;
- -[ABCdm])opt="$opt $1 $2"; shift;;
- --) opt="$opt $1"; after_dash_dash=1;;
- -*) opt="$opt $1";;
- *) if test -z "$pat"; then
- pat="$1"
- else
- break;
- fi;;
+
+ case $option in
+ (*\'?*)
+ option=\'$(printf '%s\n' "$option" | sed "$escape");;
+ (*)
+ option="'$option'";;
esac
- shift
+
+ grep="$grep $option$optarg"
done
-if test -z "$pat"; then
- echo "grep through gzip files"
- echo "usage: $prog [grep_options] pattern [files]"
- exit 2
+eval "set -- $operands "'${1+"$@"}'
+
+if test $have_pat -eq 0; then
+ case ${1?"missing pattern; try \`$0 --help' for help"} in
+ (*\'*)
+ grep="$grep -- '"$(printf '%s\n' "$1" | sed "$escape");;
+ (*)
+ grep="$grep -- '$1'";;
+ esac
+ shift
fi
if test $# -eq 0; then
- gzip -cdfq | $grep $opt "$pat"
- exit $?
+ set -- -
fi
-res=0
-for i do
- gzip -cdfq "$i" |
+exec 3>&1
+res=1
+
+for i
+do
+ # Fail if gzip or grep (or sed) fails.
+ gzip_status=$(
+ exec 5>&1
+ (gzip -cdfq -- "$i" 5>&-; echo $? >&5) 3>&- |
if test $files_with_matches -eq 1; then
- $grep $opt "$pat" > /dev/null && printf "%s\n" "$i"
+ eval "$grep" >/dev/null && { printf '%s\n' "$i" || exit 2; }
elif test $files_without_matches -eq 1; then
- $grep $opt "$pat" > /dev/null || printf "%s\n" "$i"
- elif test $with_filename -eq 0 && { test $# -eq 1 || test $no_filename -eq 1; }; then
- $grep $opt "$pat"
+ eval "$grep" >/dev/null || {
+ r=$?
+ if test $r -eq 1; then
+ printf '%s\n' "$i" || r=2
+ fi
+ test 256 -le $r && r=$(expr 128 + $r % 128)
+ exit $r
+ }
+ elif test $with_filename -eq 0 &&
+ { test $# -eq 1 || test $no_filename -eq 1; }; then
+ eval "$grep"
else
- i=${i//\\/\\\\}
- i=${i//|/\\|}
- i=${i//&/\\&}
- if test $with_filename -eq 1; then
- sed_script="s|^[^:]*:|${i}:|"
- else
- sed_script="s|^|${i}:|"
- fi
- $grep $opt "$pat" | sed "$sed_script"
- fi
+ case $i in
+ (*'
+'* | *'&'* | *'\'* | *'|'*)
+ i=$(printf '%s\n' "$i" |
+ 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=$?; test $r -lt 2 && r=2; }
+ test 256 -le $r && r=$(expr 128 + $r % 128)
+ exit $r
+ fi >&3 5>&-
+ )
r=$?
- test $res -lt $r && res=$r
+
+ # Ignore gzip status 2, as it is just a warning.
+ # gzip status 1 is an error, like grep status 2.
+ test $gzip_status -eq 2 && gzip_status=0
+ test $gzip_status -eq 1 && gzip_status=2
+
+ # Use the more serious of the grep and gzip statuses.
+ test $r -lt $gzip_status && r=$gzip_status
+
+ # Accumulate the greatest status, except consider 0 to be greater than 1.
+ if test $r -le 1 && test $res -le 1; then
+ test $r -lt $res
+ else
+ test $res -lt $r
+ fi && res=$r
+
+ # Exit immediately on a serious error.
+ test 126 -le $res && break
done
+
+if test -n "$pattmp"; then
+ rm -f "$pattmp" || {
+ r=$?
+ test $r -lt 2 && r=2
+ test $res -lt $r && res=$r
+ }
+ trap - HUP INT PIPE TERM 0
+fi
+
+test 128 -le $res && kill -$(expr $res % 128) $$
exit $res
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