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.
36 # handle being called 'zegrep' or 'zfgrep'
38 *egrep*) prog=zegrep; grep_args='-E';;
39 *fgrep*) prog=zfgrep; grep_args='-F';;
43 # skip all options and pass them on to grep taking care of options
44 # with arguments, and if -e was supplied
46 while [ "$#" -gt 0 ] && [ "${endofopts}" -eq 0 ]; do
48 # from GNU grep-2.5.1 -- keep in sync!
50 if [ "$#" -lt 2 ]; then
51 printf '%s: missing argument for %s flag\n' "${prog}" "$1" >&2
67 grep_args="${grep_args} $1 $2"
83 grep_args="${grep_args} $1"
93 # if no -e option was found, take next argument as grep-pattern
94 if [ "${pattern_found}" -lt 1 ]; then
95 if [ "$#" -ge 1 ]; then
98 elif [ "${hyphen}" -gt 0 ]; then
101 printf '%s: missing pattern\n' "${prog}" >&2
108 if [ "$#" -lt 1 ]; then
110 set -f # Disable file name generation (globbing).
111 # shellcheck disable=SC2086
112 "${zcat}" - | "${grep}" ${grep_args} -- "${pattern}" -
116 # ... on all files given on the command line
117 if [ "${silent}" -lt 1 ] && [ "$#" -gt 1 ]; then
118 grep_args="-H ${grep_args}"
121 while [ "$#" -gt 0 ]; do
122 # shellcheck disable=SC2086
123 if [ $pattern_found -eq 2 ]; then
124 "${zcat}" -- "$1" | "${grep}" --label="${1}" ${grep_args} -- -
126 "${zcat}" -- "$1" | "${grep}" --label="${1}" ${grep_args} -- "${pattern}" -
128 [ "$?" -ne 0 ] && EXIT_CODE=1