-:
#!/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 Free Software Foundation
+# Copyright (C) 1998, 2001, 2002, 2006, 2007 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, or (at your option)
-# any later version.
+# 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., 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.
-PATH="BINDIR:$PATH"; export PATH
+PATH=BINDIR:$PATH
+grep='${GREP-grep}'
-prog=`echo $0 | sed 's|.*/||'`
-case "$prog" in
- *egrep) grep=${EGREP-egrep} ;;
- *fgrep) grep=${FGREP-fgrep} ;;
- *) grep=${GREP-grep} ;;
-esac
+version='z$grep (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.
-pat=""
-after_dash_dash=""
+Written by Jean-loup Gailly.'
+
+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'.
+
+Report bugs to <bug-gzip@gnu.org>."
+
+# sed script to escape all ' for the shell, and then (to handle trailing
+# newlines correctly) turn trailing X on last line into '.
+escape='
+ s/'\''/'\''\\'\'''\''/g
+ $s/X$/'\''/
+'
+operands=
+have_pat=0
+pat_on_stdin=0
files_with_matches=0
files_without_matches=0
no_filename=0
with_filename=0
while test $# -ne 0; do
- case "$after_dash_dash$1" in
- --d* | --rec*) echo >&2 "$0: $1: option not supported"; exit 1;;
- --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 1;;
- 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 $option in
+ (-[0123456789abcdhHiIKLlnoqrRsTuUvVwxyzZ]?*)
+ arg2=-\'$(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*)
+ case ${1?"$option option requires an argument"} in
+ (*\'*)
+ optarg=" '"$(printf '%sX\n' "$1" | sed "$escape");;
+ (*)
+ optarg=" '$1'";;
+ esac
+ shift;;
+ (--)
+ break;;
+ (-?*)
+ ;;
+ (*)
+ case $option in
+ (*\'*)
+ operands="$operands '"$(printf '%sX\n' "$option" | sed "$escape");;
+ (*)
+ operands="$operands '$option'";;
+ esac
+ ${POSIXLY_CORRECT+break}
+ continue;;
esac
- case "$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
+ (-[drRzZ] | --di* | --exc* | --inc* | --rec* | --nu*)
+ 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
+ # Start search from 6 since the script already uses 3 and 5
+ for fd in $(seq 6 254); do
+ if test ! -e /dev/fd/$fd; then
+ pat_fd=$fd
+ break;
+ fi
+ done
+ optarg=/dev/fd/$pat_fd;
+ esac
+ have_pat=1;;
+ (--h | --he | --hel | --help)
+ echo "$usage" || exit 2
+ exit;;
+ (-H | --wi | --wit | --with | --with- | --with-f | --with-fi \
+ | --with-fil | --with-file | --with-filen | --with-filena | --with-filenam \
+ | --with-filename)
+ with_filename=1
+ continue;;
+ (-l | --files-with-*)
+ files_with_matches=1;;
+ (-L | --files-witho*)
+ files_without_matches=1;;
+ (-h | --no-f*)
+ no_filename=1;;
+ (-V | --v | --ve | --ver | --vers | --versi | --versio | --version)
+ echo "$version" || exit 2
+ exit;;
esac
- shift
+
+ case $option in
+ (*\'?*)
+ option=\'$(expr "X${option}X" : 'X\(.*\)' | sed "$escape");;
+ (*)
+ option="'$option'";;
+ esac
+
+ grep="$grep $option$optarg"
done
-if test -z "$pat"; then
- echo "grep through gzip files"
- echo "usage: $prog [grep_options] pattern [files]"
- exit 1
+eval "set -- $operands "'${1+"$@"}'
+
+if test $have_pat -eq 0; then
+ case ${1?"missing pattern; try \`$0 --help' for help"} in
+ (*\'*)
+ grep="$grep -- '"$(printf '%sX\n' "$1" | sed "$escape");;
+ (*)
+ grep="$grep -- '$1'";;
+ esac
+ shift
fi
if test $# -eq 0; then
- gzip -cdfq | $grep $opt "$pat"
- exit $?
+ set -- -
fi
+exec 3>&1
res=0
-for i do
- gzip -cdfq "$i" |
+
+for i
+do
+ # 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
- $grep $opt "$pat" > /dev/null && echo $i
+ eval "$grep" >/dev/null && { printf '%s\n' "$i" || exit 2; }
elif test $files_without_matches -eq 1; then
- $grep $opt "$pat" > /dev/null || echo $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
+ exit $r
+ }
+ elif test $with_filename -eq 0 &&
+ { test $# -eq 1 || test $no_filename -eq 1; }; then
+ eval "$grep"
else
- 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=2
+ exit $r
+ fi >&3 5>&-
+ )
r=$?
+ test "$gzip_status" -eq 0 || test "$gzip_status" -eq 2 || r=2
test $res -lt $r && res=$r
done
exit $res
projects / gzip / blobdiff