130 lines
2.6 KiB
Markdown
130 lines
2.6 KiB
Markdown
#!/usr/bin/perl
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# Ikiwiki "blocks" relationship plugin.
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package IkiWiki::Plugin::blocks;
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use warnings;
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use strict;
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use IkiWiki 3.00;
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sub import {
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hook(type => "getsetup", id => "blocks", call => \&getsetup);
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hook(type => "checkconfig", id => "skeleton", call => \&checkconfig);
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}
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sub getsetup () {
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return
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plugin => {
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safe => 1,
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rebuild => 1,
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},
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blocks_names => {
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type => "string",
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example => "blocks/blockedby",
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description => "comma separated list of defined relationship pairs, the forward and backward name separated by a slash",
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safe => 1,
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rebuild => 1,
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},
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}
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sub checkconfig () {
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my $blocksnames;
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if (defined $config{blocks_names}) {
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$blocksnames = $config{blocks_names};
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} else {
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$blocksnames = "blocks/blockedby";
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}
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while ( $blocksnames =~ /([^ ]+)/g )
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{
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if ( $1 =~ m@([a-zA-Z0-9]+)(/([a-zA-Z0-9]+))?@ )
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{
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my $from = $1;
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my $to = $3;
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hook(
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type => "preprocess",
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shortcut => 1, # gets interpreted by listdirectives; see doc/bugs/cannot_preview_shortcuts.mdwn / ikiwiki commit 354d22e2
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no_override => 1,
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id => $from,
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scan => 1,
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call => sub { preprocess_blocks($from, 1, @_); }
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);
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if ($to)
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{
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hook(
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type => "preprocess",
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shortcut => 1,
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no_override => 1,
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id => $to,
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scan => 1,
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call => sub { preprocess_blocks($from, 0, @_); }
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);
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}
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my $backward_match; my $backward_name;
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my $forward_match; my $forward_name;
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$backward_match = sub ($$;@) {
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my $page=shift;
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my $glob=shift;
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return IkiWiki::PageSpec::match_backlink($page, $glob, linktype => $from, @_);
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};
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$backward_name = "IkiWiki::PageSpec::match_$from";
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if ($to)
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{
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$forward_match = sub ($$;@) {
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my $page=shift;
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my $glob=shift;
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return IkiWiki::PageSpec::match_link($page, $glob, linktype => $from, @_);
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};
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$forward_name = "IkiWiki::PageSpec::match_$to";
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}
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{
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no strict 'refs';
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if ($to)
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{
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*$forward_name = $forward_match;
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}
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*$backward_name = $backward_match;
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}
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} else {
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error gettext("Malformed option in blocks_names");
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}
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}
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}
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sub preprocess_blocks ($$@) {
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# with flip=0, the directive occurring on page A pointing at page B
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# means that A $relation B, with flip=1, it means B $relation A
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my $relation = shift;
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my $flip = shift;
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if (! @_) {
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return "";
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}
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my %params=@_;
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my $page = $params{page};
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delete $params{page};
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delete $params{destpage};
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delete $params{preview};
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foreach my $blocks (keys %params) {
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$blocks=linkpage($blocks);
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# hidden WikiLink
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if ( $flip == 0 ) {
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add_link($page, $blocks, $relation);
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} else {
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add_link($blocks, $page, $relation);
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}
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}
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return "";
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}
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1
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