* meta: Drop support for "meta link", since supporting this for internal

[git.ikiwiki.info.git] / IkiWiki / Plugin / meta.pm

diff --git a/IkiWiki/Plugin/meta.pm b/IkiWiki/Plugin/meta.pm
index 938a28e59f83851f53e8d68c2776c2ee37e115f9..8555e1109b76afaf585daa6ec95ee261edbd0036 100644 (file)
--- a/IkiWiki/Plugin/meta.pm
+++ b/IkiWiki/Plugin/meta.pm
@@ -15,18 +15,24 @@ my %license;
 my %copyright;
 
 sub import { #{{{
-       hook(type => "preprocess", id => "meta", call => \&preprocess, scan => 1);
-       hook(type => "filter", id => "meta", call => \&filter);
+       hook(type => "needsbuild", id => "meta", call => \&needsbuild);
+       hook(type => "preprocess", id => "meta", call => \&preprocess);
        hook(type => "pagetemplate", id => "meta", call => \&pagetemplate);
 } # }}}
 
-sub filter (@) { #{{{
-       my %params=@_;
-       
-       $meta{$params{page}}='';
-
-       return $params{content};
-} # }}}
+sub needsbuild (@) { #{{{
+       my $needsbuild=shift;
+       foreach my $page (keys %pagestate) {
+               if (exists $pagestate{$page}{meta}) {
+                       if (grep { $_ eq $pagesources{$page} } @$needsbuild) {
+                               # remove state, it will be re-added
+                               # if the preprocessor directive is still
+                               # there during the rebuild
+                               delete $pagestate{$page}{meta};
+                       }
+               }
+       }
+}
 
 sub scrub ($) { #{{{
        if (IkiWiki::Plugin::htmlscrubber->can("sanitize")) {
@@ -38,40 +44,28 @@ sub scrub ($) { #{{{
 } #}}}
 
 sub preprocess (@) { #{{{
-       if (! @_) {
-               return "";
-       }
+       return "" unless @_;
        my %params=@_;
        my $key=shift;
        my $value=$params{$key};
        delete $params{$key};
        my $page=$params{page};
        delete $params{page};
+       my $destpage=$params{destpage};
        delete $params{destpage};
        delete $params{preview};
 
        eval q{use HTML::Entities};
-       # Always dencode, even if encoding later, since it might not be
+       # Always decode, even if encoding later, since it might not be
        # fully encoded.
        $value=decode_entities($value);
 
-       if ($key eq 'link') {
-               if (%params) {
-                       $meta{$page}.=scrub("<link href=\"".encode_entities($value)."\" ".
-                               join(" ", map { encode_entities($_)."=\"".encode_entities(decode_entities($params{$_}))."\"" } keys %params).
-                               " />\n");
-               }
-               else {
-                       # hidden WikiLink
-                       push @{$links{$page}}, $value;
-               }
-       }
-       elsif ($key eq 'title') {
+       if ($key eq 'title') {
                $title{$page}=HTML::Entities::encode_numeric($value);
        }
        elsif ($key eq 'permalink') {
                $permalink{$page}=$value;
-               $meta{$page}.=scrub("<link rel=\"bookmark\" href=\"".encode_entities($value)."\" />\n");
+               push @{$meta{$page}}, scrub('<link rel="bookmark" href="'.encode_entities($value).'" />');
        }
        elsif ($key eq 'date') {
                eval q{use Date::Parse};
@@ -89,30 +83,68 @@ sub preprocess (@) { #{{{
                if (! length $stylesheet) {
                        return "[[meta ".gettext("stylesheet not found")."]]";
                }
-               $meta{$page}.='<link href="'.urlto($stylesheet, $page).
+               push @{$meta{$page}}, '<link href="'.urlto($stylesheet, $page).
                        '" rel="'.encode_entities($rel).
                        '" title="'.encode_entities($title).
-                       "\" type=\"text/css\" />\n";
+                       "\" type=\"text/css\" />";
        }
        elsif ($key eq 'openid') {
                if (exists $params{server}) {
-                       $meta{$page}.='<link href="'.encode_entities($params{server}).
-                               "\" rel=\"openid.server\" />\n";
+                       push @{$meta{$page}}, '<link href="'.encode_entities($params{server}).
+                               '" rel="openid.server" />';
                }
-               $meta{$page}.='<link href="'.encode_entities($value).
-                       "\" rel=\"openid.delegate\" />\n";
+               push @{$meta{$page}}, '<link href="'.encode_entities($value).
+                       '" rel="openid.delegate" />';
        }
        elsif ($key eq 'license') {
-               $meta{$page}.="<link rel=\"license\" href=\"#page_license\" />\n";
+               push @{$meta{$page}}, '<link rel="license" href="#page_license" />';
                $license{$page}=$value;
        }
        elsif ($key eq 'copyright') {
-               $meta{$page}.="<link rel=\"copyright\" href=\"#page_copyright\" />\n";
+               push @{$meta{$page}}, '<link rel="copyright" href="#page_copyright" />';
                $copyright{$page}=$value;
        }
+       elsif ($key eq 'redir') {
+               return "" if $page ne $destpage;
+               my $safe=0;
+               if ($value !~ /^\w+:\/\//) {
+                       add_depends($page, $value);
+                       my $link=bestlink($page, $value);
+                       if (! length $link) {
+                               return "[[meta ".gettext("redir page not found")."]]";
+                       }
+
+                       $value=urlto($link, $page);
+                       $safe=1;
+
+                       # redir cycle detection
+                       $pagestate{$page}{meta}{redir}=$link;
+                       my $at=$page;
+                       my %seen;
+                       while (exists $pagestate{$at}{meta}{redir}) {
+                               if ($seen{$at}) {
+                                       return "[[meta ".gettext("redir cycle is not allowed")."]]";
+                               }
+                               $seen{$at}=1;
+                               $at=$pagestate{$at}{meta}{redir};
+                       }
+               }
+               else {
+                       $value=encode_entities($value);
+               }
+               my $delay=int(exists $params{delay} ? $params{delay} : 0);
+               my $redir="<meta http-equiv=\"refresh\" content=\"$delay; URL=$value\">";
+               if (! $safe) {
+                       $redir=scrub($redir);
+               }
+               push @{$meta{$page}}, $redir;
+       }
+       elsif ($key eq 'link') {
+               return "[[meta ".gettext("link is no longer supported")."]]";
+       }
        else {
-               $meta{$page}.=scrub("<meta name=\"".encode_entities($key).
-                       "\" content=\"".encode_entities($value)."\" />\n");
+               push @{$meta{$page}}, scrub('<meta name="'.encode_entities($key).
+                       '" content="'.encode_entities($value).'" />');
                if ($key eq 'author') {
                        $author{$page}=$value;
                }
@@ -130,8 +162,11 @@ sub pagetemplate (@) { #{{{
         my $destpage=$params{destpage};
         my $template=$params{template};
 
-       $template->param(meta => $meta{$page})
-               if exists $meta{$page} && $template->query(name => "meta");
+       if (exists $meta{$page} && $template->query(name => "meta")) {
+               # avoid duplicate meta lines
+               my %seen;
+               $template->param(meta => join("\n", grep { (! $seen{$_}) && ($seen{$_}=1) } @{$meta{$page}}));
+       }
        if (exists $title{$page} && $template->query(name => "title")) {
                $template->param(title => $title{$page});
                $template->param(title_overridden => 1);