3 # Copyright (c) 2003 Thomas Klausner.
5 # Redistribution and use in source and binary forms, with or without
6 # modification, are permitted provided that the following conditions
8 # 1. Redistributions of source code must retain the above copyright
9 # notice, this list of conditions and the following disclaimer.
10 # 2. Redistributions in binary form must reproduce the above copyright
11 # notice, this list of conditions and the following disclaimer in the
12 # documentation and/or other materials provided with the distribution.
14 # THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
15 # IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
16 # OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
17 # IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
18 # INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
19 # NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
20 # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
21 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
23 # THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
40 # handle being called 'zegrep' or 'zfgrep'
51 cattool="/usr/bin/zstdcat"
55 cattool="/usr/bin/bzcat"
58 cattool="/usr/bin/zcat"
61 cattool="/usr/bin/xzcat"
64 cattool="/usr/bin/lzcat"
67 echo "Invalid command: ${prg}" >&2
72 # skip all options and pass them on to grep taking care of options
73 # with arguments, and if -e was supplied
75 while [ $# -gt 0 -a ${endofopts} -eq 0 ]
78 # from GNU grep-2.5.1 -- keep in sync!
85 grep_args="${grep_args} ${1}"
89 pattern="${1#--regexp=}"
98 grep_args="${grep_args} $1"
104 echo "${prg}: missing argument for $1 flag" >&2
120 grep_args="${grep_args} $1 $2"
128 echo "${prg}: the ${1} flag is not currently supported" >&2
135 grep_args="${grep_args} $1"
139 # pattern to grep for
145 # if no -e option was found, take next argument as grep-pattern
146 if [ ${pattern_file} -eq 0 -a ${pattern_found} -eq 0 ]
148 if [ $# -ge 1 ]; then
151 elif [ ${hyphen} -gt 0 ]; then
154 echo "${prg}: missing pattern" >&2
164 if [ ${pattern_file} -eq 0 ]; then
165 ${cattool} ${catargs} - | ${grep} ${grep_args} -- "${pattern}" -
167 ${cattool} ${catargs} - | ${grep} ${grep_args} -- -
171 # ... on all files given on the command line
172 if [ ${silent} -lt 1 -a $# -gt 1 ]; then
173 grep_args="-H ${grep_args}"
175 # Succeed if any file matches. First assume no match.
178 if [ ${pattern_file} -eq 0 ]; then
179 ${cattool} ${catargs} -- "${file}" |
180 ${grep} --label="${file}" ${grep_args} -- "${pattern}" -
182 ${cattool} ${catargs} -- "${file}" |
183 ${grep} --label="${file}" ${grep_args} -- -
186 # A match (0) overrides a no-match (1). An error (>=2) overrides all.
187 if [ ${this_ret} -eq 0 -a ${ret} -eq 1 ] || [ ${this_ret} -ge 2 ]; then