use warnings;
use strict;
-use IkiWiki 2.00;
+use IkiWiki 3.00;
-sub import { #{{{
+sub import {
+ hook(type => "getsetup", id => "search", call => \&getsetup);
hook(type => "checkconfig", id => "search", call => \&checkconfig);
hook(type => "pagetemplate", id => "search", call => \&pagetemplate);
- # run last so other needsbuild hooks can modify the list
- hook(type => "needsbuild", id => "search", call => \&needsbuild,
- last => 1);
- hook(type => "filter", id => "search", call => \&filter);
+ hook(type => "postscan", id => "search", call => \&index);
hook(type => "delete", id => "search", call => \&delete);
hook(type => "cgi", id => "search", call => \&cgi);
-} # }}}
-
-sub checkconfig () { #{{{
+}
+
+sub getsetup () {
+ return
+ plugin => {
+ safe => 1,
+ rebuild => 1,
+ section => "web",
+ },
+ omega_cgi => {
+ type => "string",
+ example => "/usr/lib/cgi-bin/omega/omega",
+ description => "path to the omega cgi program",
+ safe => 0, # external program
+ rebuild => 0,
+ },
+}
+
+sub checkconfig () {
foreach my $required (qw(url cgiurl)) {
if (! length $config{$required}) {
- error(sprintf(gettext("Must specify %s when using the search plugin"), $required));
+ error(sprintf(gettext("Must specify %s when using the %s plugin"), $required, 'search'));
}
}
-
- if (! exists $config{omega_cgi}) {
- $config{omega_cgi}="/usr/lib/cgi-bin/omega/omega";
- }
- if (! -e $config{wikistatedir}."/xapian" || $config{rebuild}) {
- writefile("omega.conf", $config{wikistatedir}."/xapian",
- "database_dir .\n".
- "template_dir ./templates\n");
- writefile("query", $config{wikistatedir}."/xapian/templates",
- IkiWiki::misctemplate(gettext("search"),
- readfile(IkiWiki::template_file("searchquery.tmpl"))));
+ if (! defined $config{omega_cgi}) {
+ $config{omega_cgi}="/usr/lib/cgi-bin/omega/omega";
}
-} #}}}
+}
my $form;
-sub pagetemplate (@) { #{{{
+sub pagetemplate (@) {
my %params=@_;
my $page=$params{page};
my $template=$params{template};
$template->param(searchform => $form);
}
-} #}}}
+}
-my %toindex;
-sub needsbuild ($) { #{{{
- %toindex = map { pagename($_) => 1 } @{shift()};
-} #}}}
-
-sub filter (@) { #{{{
+my $scrubber;
+my $stemmer;
+sub index (@) {
my %params=@_;
+
+ setupfiles();
+
+ # A unique pageterm is used to identify the document for a page.
+ my $pageterm=pageterm($params{page});
+ return unless defined $pageterm;
+
+ my $db=xapiandb();
+ my $doc=Search::Xapian::Document->new();
+ my $caption=pagetitle($params{page});
+ my $title;
+ if (exists $pagestate{$params{page}}{meta} &&
+ exists $pagestate{$params{page}}{meta}{title}) {
+ $title=$pagestate{$params{page}}{meta}{title};
+ }
+ else {
+ $title=$caption;
+ }
+
+ # Remove html from text to be indexed.
+ if (! defined $scrubber) {
+ eval q{use HTML::Scrubber};
+ if (! $@) {
+ $scrubber=HTML::Scrubber->new(allow => []);
+ }
+ }
+ my $toindex = defined $scrubber ? $scrubber->scrub($params{content}) : $params{content};
- if ($params{page} eq $params{destpage} && $toindex{$params{page}}) {
- # index page
- my $db=xapiandb();
- my $doc=Search::Xapian::Document->new();
- my $title;
- if (exists $pagestate{$params{page}}{meta} &&
- exists $pagestate{$params{page}}{meta}{title}) {
- $title=$pagestate{$params{page}}{meta}{title};
+ # Take 512 characters for a sample, then extend it out
+ # if it stopped in the middle of a word.
+ my $size=512;
+ my ($sample)=substr($toindex, 0, $size);
+ if (length($sample) == $size) {
+ my $max=length($toindex);
+ my $next;
+ while ($size < $max &&
+ ($next=substr($toindex, $size++, 1)) !~ /\s/) {
+ $sample.=$next;
+ }
+ }
+ $sample=~s/\n/ /g;
+
+ # data used by omega
+ # Decode html entities in it, since omega re-encodes them.
+ eval q{use HTML::Entities};
+ error $@ if $@;
+ $doc->set_data(
+ "url=".urlto($params{page}, "")."\n".
+ "sample=".decode_entities($sample)."\n".
+ "caption=".decode_entities($caption)."\n".
+ "modtime=$IkiWiki::pagemtime{$params{page}}\n".
+ "size=".length($params{content})."\n"
+ );
+
+ # Index document and add terms for other metadata.
+ my $tg = Search::Xapian::TermGenerator->new();
+ if (! $stemmer) {
+ my $langcode=$ENV{LANG} || "en";
+ $langcode=~s/_.*//;
+
+ # This whitelist is here to work around a xapian bug (#486138)
+ my @whitelist=qw{da de en es fi fr hu it no pt ru ro sv tr};
+
+ if (grep { $_ eq $langcode } @whitelist) {
+ $stemmer=Search::Xapian::Stem->new($langcode);
}
else {
- $title=IkiWiki::pagetitle($params{page});
+ $stemmer=Search::Xapian::Stem->new("english");
}
-
- # data used by omega
- $doc->set_data(
- "url=".urlto($params{page}, "")."\n".
- "sample=\n". # TODO
- "caption=$title\n".
- "modtime=$IkiWiki::pagemtime{$params{page}}\n".
- "size=".length($params{content})."\n"
- );
-
- my $tg = Search::Xapian::TermGenerator->new();
- $tg->set_stemmer(new Search::Xapian::Stem("english"));
- $tg->set_document($doc);
- $tg->index_text($params{page}, 2);
- $tg->index_text($title, 2);
- $tg->index_text($params{content}); # TODO html strip; preprocessor too
-
- my $pageterm=pageterm($params{page});
- $doc->add_term($pageterm);
- $db->replace_document_by_term($pageterm, $doc);
+ }
+ $tg->set_stemmer($stemmer);
+ $tg->set_document($doc);
+ $tg->index_text($params{page}, 2);
+ $tg->index_text($caption, 2);
+ $tg->index_text($title, 2) if $title ne $caption;
+ $tg->index_text($toindex);
+ $tg->index_text(lc($title), 1, "S"); # for title:foo
+ foreach my $link (@{$links{$params{page}}}) {
+ $tg->index_text(lc($link), 1, "XLINK"); # for link:bar
}
- return $params{content};
-} #}}}
+ $doc->add_term($pageterm);
+ $db->replace_document_by_term($pageterm, $doc);
+}
-sub delete (@) { #{{{
+sub delete (@) {
my $db=xapiandb();
foreach my $page (@_) {
- $db->delete_document_by_term(pageterm($page));
+ my $pageterm=pageterm(pagename($page));
+ $db->delete_document_by_term($pageterm) if defined $pageterm;
}
-} #}}}
+}
-sub cgi ($) { #{{{
+sub cgi ($) {
my $cgi=shift;
if (defined $cgi->param('P')) {
chdir("$config{wikistatedir}/xapian") || error("chdir: $!");
$ENV{OMEGA_CONFIG_FILE}="./omega.conf";
$ENV{CGIURL}=$config{cgiurl},
+ IkiWiki::loadindex();
+ $ENV{HELPLINK}=htmllink("", "", "ikiwiki/searching",
+ noimageinline => 1, linktext => "Help");
exec($config{omega_cgi}) || error("$config{omega_cgi} failed: $!");
}
-} #}}}
+}
-sub pageterm ($) { #{{{
+sub pageterm ($) {
my $page=shift;
- # TODO: check if > 255 char page names overflow term
- # length; use sha1 if so?
- return "P".$page;
-} #}}}
+ # 240 is the number used by omindex to decide when to hash an
+ # overlong term. This does not use a compatible hash method though.
+ if (length $page > 240) {
+ eval q{use Digest::SHA1};
+ if ($@) {
+ debug("search: ".sprintf(gettext("need Digest::SHA1 to index %s"), $page)) if $@;
+ return undef;
+ }
+
+ # Note no colon, therefore it's guaranteed to not overlap
+ # with a page with the same name as the hash..
+ return "U".lc(Digest::SHA1::sha1_hex($page));
+ }
+ else {
+ return "U:".$page;
+ }
+}
my $db;
-sub xapiandb () { #{{{
+sub xapiandb () {
if (! defined $db) {
eval q{
use Search::Xapian;
Search::Xapian::DB_CREATE_OR_OPEN());
}
return $db;
-} #}}}
+}
+
+{
+my $setup=0;
+sub setupfiles () {
+ if (! $setup and (! -e $config{wikistatedir}."/xapian" || $config{rebuild})) {
+ writefile("omega.conf", $config{wikistatedir}."/xapian",
+ "database_dir .\n".
+ "template_dir ./templates\n");
+
+ # Avoid omega interpreting anything in the misctemplate
+ # as an omegascript command.
+ my $misctemplate=IkiWiki::misctemplate(gettext("search"), "\0");
+ eval q{use HTML::Entities};
+ error $@ if $@;
+ $misctemplate=encode_entities($misctemplate, '\$');
+
+ my $querytemplate=readfile(IkiWiki::template_file("searchquery.tmpl"));
+ $misctemplate=~s/\0/$querytemplate/;
+
+ writefile("query", $config{wikistatedir}."/xapian/templates",
+ $misctemplate);
+ $setup=1;
+ }
+}
+}
1