# 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) 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.
+
+# 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.
+
PATH="BINDIR:$PATH"; export PATH
prog=`echo $0 | sed 's|.*/||'`
*fgrep) grep=${FGREP-fgrep} ;;
*) grep=${GREP-grep} ;;
esac
+
pat=""
+after_dash_dash=""
+files_with_matches=0
+files_without_matches=0
+no_filename=0
+with_filename=0
+
while test $# -ne 0; do
- case "$1" in
- -e | -f) opt="$opt $1"; shift; pat="$1"
+ case "$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 "$1" in
+ -*l*) files_with_matches=1;;
+ esac;;
+ esac
+ case "$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="$1"
if test -z "$pat"; then
echo "grep through gzip files"
echo "usage: $prog [grep_options] pattern [files]"
- exit 1
+ exit 2
fi
-list=0
-silent=0
-op=`echo "$opt" | sed -e 's/ //g' -e 's/-//g'`
-case "$op" in
- *l*) list=1
-esac
-case "$op" in
- *h*) silent=1
-esac
-
if test $# -eq 0; then
gzip -cdfq | $grep $opt "$pat"
exit $?
res=0
for i do
- if test $list -eq 1; then
- gzip -cdfq "$i" | $grep $opt "$pat" > /dev/null && echo $i
- r=$?
- elif test $# -eq 1 -o $silent -eq 1; then
- gzip -cdfq "$i" | $grep $opt "$pat"
- r=$?
- else
- gzip -cdfq "$i" | $grep $opt "$pat" | sed "s|^|${i}:|"
- r=$?
- fi
- test "$r" -ne 0 && res="$r"
+ gzip -cdfq "$i" |
+ if test $files_with_matches -eq 1; then
+ $grep $opt "$pat" > /dev/null && echo $i
+ 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"
+ else
+ if test $with_filename -eq 1; then
+ sed_script="s|^[^:]*:|${i}:|"
+ else
+ sed_script="s|^|${i}:|"
+ fi
+ $grep $opt "$pat" | sed "$sed_script"
+ fi
+ r=$?
+ test $res -lt $r && res=$r
done
exit $res