108 lines
2.2 KiB
Perl
Executable file
108 lines
2.2 KiB
Perl
Executable file
#!/usr/bin/perl
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=pod
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=head1 NAME
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G - shorthand for multi level greps
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=head1 SYNOPSIS
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B<G> [[grep options] string] [[grep options] string] ...
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=head1 DESCRIPTION
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B<G> is a short hand of writing:
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grep --option string | grep --option2 string2
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=head1 EXAMPLE
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Grep for lines with Foo but not Bar:
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G Foo -v Bar
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=head1 AUTHOR
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Copyright (C) 2017 Ole Tange,
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http://ole.tange.dk and Free Software Foundation, Inc.
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=head1 LICENSE
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Copyright (C) 2012 Free Software Foundation, Inc.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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at your option any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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=head1 DEPENDENCIES
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B<G> uses B<grep>.
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=head1 SEE ALSO
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B<openssl>
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=cut
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my $i = 0;
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while(@ARGV) {
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$_ = shift;
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push @{$cmd[$i]}, $_;
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if(/^[^-]/) {
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$i++
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}
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}
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exec join"|", map { "grep ".join(" ", shell_quote(@$_)) } @cmd;
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sub shell_quote {
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# Input:
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# @strings = strings to be quoted
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# Output:
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# @shell_quoted_strings = string quoted with \ as needed by the shell
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return wantarray ?
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(map { shell_quote_scalar($_) } @_)
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: (join" ",map { shell_quote_scalar($_) } @_);
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}
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sub shell_quote_scalar {
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# Quote for other shells
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my $a = $_[0];
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if(defined $a) {
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# zsh wants '=' quoted
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# Solaris sh wants ^ quoted.
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# $a =~ s/([\002-\011\013-\032\\\#\?\`\(\)\{\}\[\]\^\*\>\<\~\|\; \"\!\$\&\'\202-\377])/\\$1/g;
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# This is 1% faster than the above
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if(($a =~ s/[\002-\011\013-\032\\\#\?\`\(\)\{\}\[\]\^\*\<\=\>\~\|\; \"\!\$\&\'\202-\377]/\\$&/go)
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+
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# quote newline as '\n'
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($a =~ s/[\n]/'\n'/go)) {
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# A string was replaced
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# No need to test for "" or \0
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} elsif($a eq "") {
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$a = "''";
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} elsif($a eq "\0") {
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$a = "";
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}
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}
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return $a;
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}
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