Files
oddmuse/modules/grep-filtered.pl
2020-03-19 14:07:59 +01:00

49 lines
1.7 KiB
Perl

# Copyright (C) 2020 Alex Schroeder <alex@gnu.org>
# Copyright (C) 2020 Daniel MacKay <daniel@bonmot.ca>
#
# 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 3 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.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
use strict;
use v5.10;
AddModuleDescription('grep-filtered.pl', 'Grep Filtered');
our ($PageDir);
our ($UseGrep);
$UseGrep = 1;
*OldGrepFiltered = \&Filtered;
*Filtered = \&NewGrepFiltered;
sub NewGrepFiltered {
my ($string, @pages) = @_;
my @pages = OldGrepFiltered(@_);
my $regexp = SearchRegexp($string);
return @pages unless GetParam('grep', $UseGrep) and $regexp;
my @result = grep(/$regexp/i, @pages); # search parameter for page titles
my %found = map {$_ => 1} @result;
$regexp =~ s/\\n(\)*)$/\$$1/g; # sometimes \n can be replaced with $
$regexp =~ s/([?+{|()])/\\$1/g; # basic regular expressions from man grep
# if we know of any remaining grep incompatibilities we should
# return @pages here!
$regexp = quotemeta($regexp);
open(F, '-|:encoding(UTF-8)', "find $PageDir -type f -print0 | xargs -0 -n10 -P4 grep --ignore-case -l '$regexp'") ;
while (<F>) {
my ($pageName) = m/.*\/(.*)\.pg$/ ;
push(@result, $pageName) if not $found{$pageName};
} close(F);
return sort @result;
}