use IkiWiki 2.00;
sub import { #{{{
+ hook(type => "getsetup", id => "search", call => \&getsetup);
hook(type => "checkconfig", id => "search", call => \&checkconfig);
hook(type => "pagetemplate", id => "search", call => \&pagetemplate);
- hook(type => "sanitize", id => "search", call => \&index);
+ hook(type => "postscan", id => "search", call => \&index);
hook(type => "delete", id => "search", call => \&delete);
hook(type => "cgi", id => "search", call => \&cgi);
} # }}}
+sub getsetup () { #{{{
+ return
+ plugin => {
+ safe => 1,
+ rebuild => 1,
+ },
+ 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));
}
}
-
- 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 $scrubber;
+my $stemmer;
sub index (@) { #{{{
my %params=@_;
-
- return $params{content} if $IkiWiki::preprocessing{$params{destpage}};
+
+ setupfiles();
+
+ # A unique pageterm is used to identify the document for a page.
+ my $pageterm=pageterm($params{page});
+ return $params{content} 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}) {
+ exists $pagestate{$params{page}}{meta}{title}) {
$title=$pagestate{$params{page}}{meta}{title};
}
else {
- $title=IkiWiki::pagetitle($params{page});
+ $title=$caption;
}
# Remove html from text to be indexed.
$sample=~s/\n/ /g;
# data used by omega
+ # Decode html entities in it, since omega re-encodes them.
+ eval q{use HTML::Entities};
$doc->set_data(
"url=".urlto($params{page}, "")."\n".
- "sample=$sample\n".
- "caption=$title\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();
- $tg->set_stemmer(new Search::Xapian::Stem("english"));
+ 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 {
+ $stemmer=Search::Xapian::Stem->new("english");
+ }
+ }
+ $tg->set_stemmer($stemmer);
$tg->set_document($doc);
$tg->index_text($params{page}, 2);
- $tg->index_text($title, 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
+ }
- my $pageterm=pageterm($params{page});
$doc->add_term($pageterm);
$db->replace_document_by_term($pageterm, $doc);
-
- return $params{content};
} #}}}
sub delete (@) { #{{{
my $db=xapiandb();
foreach my $page (@_) {
- $db->delete_document_by_term(pageterm(pagename($page)));
+ my $pageterm=pageterm(pagename($page));
+ $db->delete_document_by_term($pageterm) if defined $pageterm;
}
} #}}}
chdir("$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: $!");
}
} #}}}
sub pageterm ($) { #{{{
my $page=shift;
- # TODO: check if > 255 char page names overflow term
- # length; use sha1 if so?
- return "U:".$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;
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");
+ writefile("query", $config{wikistatedir}."/xapian/templates",
+ IkiWiki::misctemplate(gettext("search"),
+ readfile(IkiWiki::template_file("searchquery.tmpl"))));
+ $setup=1;
+ }
+} #}}}
+}
+
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