109 lines
2.8 KiB
Perl
109 lines
2.8 KiB
Perl
#!/usr/bin/perl
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package IkiWiki::Plugin::linkmap;
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use warnings;
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use strict;
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use IkiWiki;
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use IPC::Open2;
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sub import { #{{{
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hook(type => "preprocess", id => "linkmap", call => \&preprocess);
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hook(type => "format", id => "linkmap", call => \&format);
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} # }}}
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my $mapnum=0;
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my %maps;
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sub preprocess (@) { #{{{
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my %params=@_;
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$params{pages}="*" unless defined $params{pages};
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# Needs to update whenever a page is added or removed, so
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# register a dependency.
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add_depends($params{page}, $params{pages});
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# Can't just return the linkmap here, since the htmlscrubber
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# scrubs out all <object> tags (with good reason!)
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# Instead, insert a placeholder tag, which will be expanded during
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# formatting.
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$mapnum++;
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$maps{$mapnum}=\%params;
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return "<div class=\"linkmap$mapnum\"></div>";
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} # }}}
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sub format (@) { #{{{
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my %params=@_;
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$params{content}=~s/<div class=\"linkmap(\d+)"><\/div>/genmap($1)/eg;
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return $params{content};
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} # }}}
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sub genmap ($) { #{{{
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my $mapnum=shift;
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return "" unless exists $maps{$mapnum};
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my %params=%{$maps{$mapnum}};
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# Get all the items to map.
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my %mapitems = ();
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foreach my $item (keys %links) {
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if (pagespec_match($item, $params{pages})) {
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my $link=htmlpage($item);
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$link=IkiWiki::abs2rel($link, IkiWiki::dirname($params{page}));
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$mapitems{$item}=$link;
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}
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}
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# Use ikiwiki's function to create the file, this makes sure needed
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# subdirs are there and does some sanity checking.
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writefile("$params{page}.png", $config{destdir}, "");
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# Run dot to create the graphic and get the map data.
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# TODO: should really add the png to renderedfiles and call
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# check_overwrite, but currently renderedfiles
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# only supports listing one file per page.
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my $tries=10;
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my $pid;
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while (1) {
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eval {
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$pid=open2(*IN, *OUT, "dot -Tpng -o '$config{destdir}/$params{page}.png' -Tcmapx");
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};
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last unless $@;
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$tries--;
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if ($tries < 1) {
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return "failed to run dot: $@";
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}
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}
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# open2 doesn't respect "use open ':utf8'"
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binmode (IN, ':utf8');
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binmode (OUT, ':utf8');
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print OUT "digraph linkmap$mapnum {\n";
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print OUT "concentrate=true;\n";
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print OUT "charset=\"utf-8\";\n";
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print OUT "ratio=compress;\nsize=\"".($params{width}+0).", ".($params{height}+0)."\";\n"
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if defined $params{width} and defined $params{height};
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foreach my $item (keys %mapitems) {
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print OUT "\"$item\" [shape=box,href=\"$mapitems{$item}\"];\n";
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foreach my $link (map { bestlink($item, $_) } @{$links{$item}}) {
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print OUT "\"$item\" -> \"$link\";\n"
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if $mapitems{$link};
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}
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}
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print OUT "}\n";
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close OUT;
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local $/=undef;
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my $ret="<object data=\"".
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IkiWiki::abs2rel("$params{page}.png", IkiWiki::dirname($params{page})).
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"\" type=\"image/png\" usemap=\"#linkmap$mapnum\">\n".
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<IN>.
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"</object>";
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close IN;
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waitpid $pid, 0;
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return $ret;
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} #}}}
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1
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