X-Git-Url: https://git.cworth.org/git?p=gzip;a=blobdiff_plain;f=zgrep.in;h=7ae779d63af8c03e07dbbc30b921ca979d7c17e7;hp=b91330d3c1a61c529e471ca07e21d2464ab3b519;hb=HEAD;hpb=302189d124ed5849c2589ea92e912eb24fdc4ab3 diff --git a/zgrep.in b/zgrep.in old mode 100755 new mode 100644 index b91330d..7ae779d --- a/zgrep.in +++ b/zgrep.in @@ -1,114 +1,209 @@ -: #!/bin/sh # zgrep -- a wrapper around a grep program that decompresses files as needed # Adapted from a version sent by Charles Levert -# 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 . +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 ." + +# 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