-:
#!/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 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
-prog=`echo $0 | sed 's|.*/||'`
+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) 2006 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."
+
+usage="Usage: z$grep [OPTION]... [-e] PATTERN [FILE]...
+Look for instances of PATTERN in the input FILEs, using their
+uncompressed contents if they are compressed.
+
+OPTIONs are the same as for '$grep'.
+
+Report bugs to <bug-gzip@gnu.org>."
+
pat=""
after_dash_dash=""
files_with_matches=0
while test $# -ne 0; do
case "$after_dash_dash$1" in
- --d* | --rec*) echo >&2 "$0: $1: option not supported"; exit 1;;
+ --d* | --rec*) echo >&2 "$0: $1: option not supported"; exit 2;;
+ --h*) echo "$usage" || exit 2; exit;;
--files-with-*) files_with_matches=1;;
--files-witho*) files_without_matches=1;;
--no-f*) no_filename=1;;
+ --v*) echo "$version" || exit 2; exit;;
--wi*) with_filename=1;;
--*) ;;
-*)
case "$1" in
- -*[dr]*) echo >&2 "$0: $1: option not supported"; exit 1;;
+ -*[dr]*) echo >&2 "$0: $1: option not supported"; exit 2;;
esac
case "$1" in
-*H*) with_filename=1;;
done
if test -z "$pat"; then
- echo "grep through gzip files"
- echo "usage: $prog [grep_options] pattern [files]"
- exit 1
+ echo "$usage"
+ exit 2
fi
if test $# -eq 0; then
res=0
for i do
- gzip -cdfq "$i" |
+ gzip -cdfq -- "$i" |
if test $files_with_matches -eq 1; then
- $grep $opt "$pat" > /dev/null && echo $i
+ $grep $opt "$pat" > /dev/null && printf '%s\n' "$i"
elif test $files_without_matches -eq 1; then
- $grep $opt "$pat" > /dev/null || echo $i
+ $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"
else
+ escaped=
+ while :; do
+ case $i in
+ *'
+'*)
+ char='
+' repl='\\n';;
+ *'&'*) char='&' repl='\&';;
+ *'\'*) char='\\' repl='\\';;
+ *'|'*) char='|' repl='\|';;
+ *) break;;
+ esac
+ up_to_first_char="\\([^$char]*\\)"
+ after_first_char="[^$char]*$char\\(.*\\)"
+ escaped=$escaped`expr "X$i" : "X$up_to_first_char"`$repl
+ i=`expr "X$i" : "$after_first_char"`
+ done
if test $with_filename -eq 1; then
- sed_script="s|^[^:]*:|${i}:|"
+ sed_script="s|[^:]*|$escaped$i|"
else
- sed_script="s|^|${i}:|"
+ sed_script="s|^|$escaped$i:|"
fi
- $grep $opt "$pat" | sed "$sed_script"
+
+ # Fail if either grep or sed fails.
+ # Bash has ${PIPESTATUS[0]}, but that's not portable.
+ exec 3>&1
+ r=`
+ exec 4>&1
+ ($grep $opt "$pat" 4>&-; echo $? >&4) 3>&- | sed "$sed_script" >&3 4>&-
+ ` &&
+ exit $r
fi
r=$?
test $res -lt $r && res=$r