Contents of /trunk/busybox/zgrep.sh
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Mon Jul 30 12:13:33 2012 UTC (12 years, 1 month ago) by niro
File MIME type: application/x-sh
File size: 5987 byte(s)
Mon Jul 30 12:13:33 2012 UTC (12 years, 1 month ago) by niro
File MIME type: application/x-sh
File size: 5987 byte(s)
-added missing zgrep script
1 | #!/bin/sh |
2 | |
3 | # zgrep -- a wrapper around a grep program that decompresses files as needed |
4 | # Adapted from a version sent by Charles Levert <charles@comm.polymtl.ca> |
5 | |
6 | # Copyright (C) 1998, 2001, 2002, 2006, 2007, 2009 Free Software Foundation |
7 | # Copyright (C) 1993 Jean-loup Gailly |
8 | |
9 | # This program is free software; you can redistribute it and/or modify |
10 | # it under the terms of the GNU General Public License as published by |
11 | # the Free Software Foundation; either version 3 of the License, or |
12 | # (at your option) any later version. |
13 | |
14 | # This program is distributed in the hope that it will be useful, |
15 | # but WITHOUT ANY WARRANTY; without even the implied warranty of |
16 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
17 | # GNU General Public License for more details. |
18 | |
19 | # You should have received a copy of the GNU General Public License along |
20 | # with this program; if not, write to the Free Software Foundation, Inc., |
21 | # 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
22 | |
23 | bindir='/usr/bin' |
24 | case $1 in |
25 | --__bindir) bindir=${2?}; shift; shift;; |
26 | esac |
27 | PATH=$bindir:$PATH |
28 | |
29 | grep='${GREP-grep}' |
30 | |
31 | version='zgrep (gzip) 1.4 |
32 | Copyright (C) 2007, 2009-2010 Free Software Foundation, Inc. |
33 | This is free software. You may redistribute copies of it under the terms of |
34 | the GNU General Public License <http://www.gnu.org/licenses/gpl.html>. |
35 | There is NO WARRANTY, to the extent permitted by law. |
36 | |
37 | Written by Jean-loup Gailly.' |
38 | |
39 | usage="Usage: $0 [OPTION]... [-e] PATTERN [FILE]... |
40 | Look for instances of PATTERN in the input FILEs, using their |
41 | uncompressed contents if they are compressed. |
42 | |
43 | OPTIONs are the same as for 'grep'. |
44 | |
45 | Report bugs to <bug-gzip@gnu.org>." |
46 | |
47 | # sed script to escape all ' for the shell, and then (to handle trailing |
48 | # newlines correctly) turn trailing X on last line into '. |
49 | escape=' |
50 | s/'\''/'\''\\'\'''\''/g |
51 | $s/X$/'\''/ |
52 | ' |
53 | operands= |
54 | have_pat=0 |
55 | pat_on_stdin=0 |
56 | files_with_matches=0 |
57 | files_without_matches=0 |
58 | no_filename=0 |
59 | with_filename=0 |
60 | |
61 | while test $# -ne 0; do |
62 | option=$1 |
63 | shift |
64 | optarg= |
65 | |
66 | case $option in |
67 | (-[0123456789abcdhHiIKLlnoqrRsTuUvVwxyzZ]?*) |
68 | arg2=-\'$(expr "X${option}X" : 'X-.[0-9]*\(.*\)' | sed "$escape") |
69 | eval "set -- $arg2 "'${1+"$@"}' |
70 | option=$(expr "X$option" : 'X\(-.[0-9]*\)');; |
71 | (--binary-*=* | --[lm]a*=* | --reg*=*) |
72 | ;; |
73 | (-[ABCDefm] | --binary-* | --file | --[lm]a* | --reg*) |
74 | case ${1?"$option option requires an argument"} in |
75 | (*\'*) |
76 | optarg=" '"$(printf '%sX\n' "$1" | sed "$escape");; |
77 | (*) |
78 | optarg=" '$1'";; |
79 | esac |
80 | shift;; |
81 | (--) |
82 | break;; |
83 | (-?*) |
84 | ;; |
85 | (*) |
86 | case $option in |
87 | (*\'*) |
88 | operands="$operands '"$(printf '%sX\n' "$option" | sed "$escape");; |
89 | (*) |
90 | operands="$operands '$option'";; |
91 | esac |
92 | ${POSIXLY_CORRECT+break} |
93 | continue;; |
94 | esac |
95 | |
96 | case $option in |
97 | (-[drRzZ] | --di* | --exc* | --inc* | --rec* | --nu*) |
98 | printf >&2 '%s: %s: option not supported\n' "$0" "$option" |
99 | exit 2;; |
100 | (-[ef]* | --file | --file=* | --reg*) |
101 | # The pattern is coming from a file rather than the command-line. |
102 | # If the file is actually stdin then we need to do a little |
103 | # magic, (since we use stdin to pass the gzip output to grep). |
104 | # So find a free fd and change the argument to then use this |
105 | # file descriptor for the pattern. |
106 | case $optarg in |
107 | (" '-'" | " '/dev/stdin'" | " '/dev/fd/0'") |
108 | pat_on_stdin=1 |
109 | eval 'test -e .' 2>/dev/null \ |
110 | && eval 'exists(){ test -e "$@"; }' \ |
111 | || eval 'exists(){ test -r "$@" || test -w "$@"; }' |
112 | # Start search from 6 since the script already uses 3 and 5 |
113 | fd=6 |
114 | pat_fd= |
115 | while : ; do |
116 | if ! exists /proc/$$/fd/$fd; then |
117 | pat_fd=$fd |
118 | break; |
119 | fi |
120 | fd=$(expr $fd + 1) |
121 | if test $fd = 255; then |
122 | printf >&2 '%s: no free file descriptor\n' "$0" |
123 | exit 2 |
124 | fi |
125 | done |
126 | optarg=/dev/fd/$pat_fd; |
127 | esac |
128 | have_pat=1;; |
129 | (--h | --he | --hel | --help) |
130 | echo "$usage" || exit 2 |
131 | exit;; |
132 | (-H | --wi | --wit | --with | --with- | --with-f | --with-fi \ |
133 | | --with-fil | --with-file | --with-filen | --with-filena | --with-filenam \ |
134 | | --with-filename) |
135 | with_filename=1 |
136 | continue;; |
137 | (-l | --files-with-*) |
138 | files_with_matches=1;; |
139 | (-L | --files-witho*) |
140 | files_without_matches=1;; |
141 | (--no-f*) |
142 | no_filename=1;; |
143 | (-V | --v | --ve | --ver | --vers | --versi | --versio | --version) |
144 | echo "$version" || exit 2 |
145 | exit;; |
146 | esac |
147 | |
148 | case $option in |
149 | (*\'?*) |
150 | option=\'$(expr "X${option}X" : 'X\(.*\)' | sed "$escape");; |
151 | (*) |
152 | option="'$option'";; |
153 | esac |
154 | |
155 | grep="$grep $option$optarg" |
156 | done |
157 | |
158 | eval "set -- $operands "'${1+"$@"}' |
159 | |
160 | if test $have_pat -eq 0; then |
161 | case ${1?"missing pattern; try \`$0 --help' for help"} in |
162 | (*\'*) |
163 | grep="$grep -- '"$(printf '%sX\n' "$1" | sed "$escape");; |
164 | (*) |
165 | grep="$grep -- '$1'";; |
166 | esac |
167 | shift |
168 | fi |
169 | |
170 | if test $# -eq 0; then |
171 | set -- - |
172 | fi |
173 | |
174 | exec 3>&1 |
175 | res=0 |
176 | |
177 | for i |
178 | do |
179 | # Fail if gzip or grep (or sed) fails. |
180 | gzip_status=$( |
181 | exec 5>&1 |
182 | if test $pat_on_stdin -eq 1; then |
183 | eval "exec $pat_fd<&0" |
184 | fi |
185 | (gzip -cdf -- "$i" 5>&-; echo $? >&5) 3>&- | |
186 | if test $files_with_matches -eq 1; then |
187 | eval "$grep" >/dev/null && { printf '%s\n' "$i" || exit 2; } |
188 | elif test $files_without_matches -eq 1; then |
189 | eval "$grep" >/dev/null || { |
190 | r=$? |
191 | if test $r -eq 1; then |
192 | printf '%s\n' "$i" || r=2 |
193 | fi |
194 | exit $r |
195 | } |
196 | elif test $with_filename -eq 0 && |
197 | { test $# -eq 1 || test $no_filename -eq 1; }; then |
198 | eval "$grep" |
199 | else |
200 | case $i in |
201 | (*' |
202 | '* | *'&'* | *'\'* | *'|'*) |
203 | i=$(printf '%s\n' "$i" | |
204 | sed ' |
205 | $!N |
206 | $s/[&\|]/\\&/g |
207 | $s/\n/\\n/g |
208 | ');; |
209 | esac |
210 | sed_script="s|^|$i:|" |
211 | |
212 | # Fail if grep or sed fails. |
213 | r=$( |
214 | exec 4>&1 |
215 | (eval "$grep" 4>&-; echo $? >&4) 3>&- | sed "$sed_script" >&3 4>&- |
216 | ) || r=2 |
217 | exit $r |
218 | fi >&3 5>&- |
219 | ) |
220 | r=$? |
221 | test "$gzip_status" -eq 0 || test "$gzip_status" -eq 2 || r=2 |
222 | test $res -lt $r && res=$r |
223 | done |
224 | exit $res |