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#!/bin/sh # xzgrep -- 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, 2006, 2007 Free Software Foundation # Copyright (C) 1993 Jean-loup Gailly # Modified for XZ Utils by Andrew Dudman and Lasse Collin. # 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 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. #SET_PATH - This line is a placeholder to ease patching this script. # Instead of unsetting XZ_OPT, just make sure that xz will use file format # autodetection. This way memory usage limit and thread limit can be # specified via XZ_OPT. With gzip, bzip2, and lzop it's OK to just unset the # environment variables. xz='xz --format=auto' unset GZIP BZIP BZIP2 LZOP case ${0##/} in egrep) prog=xzegrep; grep=${GREP:-egrep};; fgrep) prog=xzfgrep; grep=${GREP:-fgrep};; ) prog=xzgrep; grep=${GREP:-grep};; esac version="$prog (XZ Utils) 5.2.5" 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 <lasse.collin@tukaani.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 files_with_matches=0 files_without_matches=0 no_filename=0 with_filename=0 while test $# -ne 0; do 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 $option in (-[drRzZ] \| --di \| --exc* \| --inc* \| --rec* \| --nu) printf >&2 '%s: %s: Option not supported\n' "$0" "$option" exit 2;; (-[ef] \| --file \| --file=* \| --reg) have_pat=1;; (--h \| --he \| --hel \| --help) echo "$usage" \|\| exit 2 exit;; (-H \| --wi \| --wit \| --with \| --with- \| --with-f \| --with-fi \ \| --with-fil \| --with-file \| --with-filen \| --with-filena \| --with-filenam \ \| --with-filename) with_filename=1 continue;; (-l \| --files-with-) files_with_matches=1 continue;; (-L \| --files-witho) files_without_matches=1 continue;; (-h \| --no-f) no_filename=1;; (-V \| --v \| --ve \| --ver \| --vers \| --versi \| --versio \| --version) echo "$version" \|\| exit 2 exit;; esac case $option in (\'?) option=\'$(expr "X${option}X" : 'X$.$' \| sed "$escape");; () option="'$option'";; esac grep="$grep $option$optarg" done if test $files_with_matches -eq 1 \|\| test $files_without_matches -eq 1; then grep="$grep -q" fi 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 set -- - fi exec 3>&1 # res=1 means that no file matched yet res=1 for i; do case $i in [-.][zZ] \| _z \| [-.]gz \| .t[ag]z) uncompress="gzip -cdf";; [-.]bz2 \| [-.]tbz \| .tbz2) uncompress="bzip2 -cdf";; [-.]lzo \| [-.]tzo) uncompress="lzop -cdf";; [-.]zst \| [-.]tzst) uncompress="zstd -cdfq";; # zstd needs -q. ) uncompress="$xz -cdf";; esac # Fail if xz or grep (or sed) fails. xz_status=$( exec 5>&1 ($uncompress -- "$i" 5>&-; echo $? >&5) 3>&- \| if test $files_with_matches -eq 1; then eval "$grep" && { printf '%s\n' "$i" \|\| exit 2; } elif test $files_without_matches -eq 1; then eval "$grep" \|\| { 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 # Append a colon so that the last character will never be a newline # which would otherwise get lost in shell command substitution. i="$i:" # Escape & \ \| and newlines only if such characters are present # (speed optimization). case $i in (' ' \| '&' \| '\' \| '\|') i=$(printf '%s\n' "$i" \| LC_ALL=C sed 's/[&\\|]/\\&/g; $!s/$/\\/');; esac # $i already ends with a colon so don't add it here. sed_script="s\|^\|$i\|" # Fail if grep or sed fails. r=$( exec 4>&1 (eval "$grep" 4>&-; echo $? >&4) 3>&- \| LC_ALL=C sed "$sed_script" >&3 4>&- ) \|\| r=2 exit $r fi >&3 5>&- ) r=$? # fail occurred previously, nothing worse can happen test $res -gt 1 && continue if test "$xz_status" -eq 0; then : elif test "$xz_status" -ge 128 \ && test "$(kill -l "$xz_status" 2> /dev/null)" = "PIPE"; then : else r=2 fi # still no match test $r -eq 1 && continue # 0 == match, >=2 == fail res=$r done exit $res

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