meta: generalize meta_title into meta(title); support author, updated, date

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

diff --git a/IkiWiki/Plugin/meta.pm b/IkiWiki/Plugin/meta.pm
index b2295923e31d94ed8d393a09d1ebeb2f05604878..c9fdbc9341ac32f899be991a4956fa06b2a5b96c 100644 (file)
--- a/IkiWiki/Plugin/meta.pm
+++ b/IkiWiki/Plugin/meta.pm
@@ -20,6 +20,7 @@ sub getsetup () {
                plugin => {
                        safe => 1,
                        rebuild => undef,
+                       section => "core",
                },
 }
 
@@ -88,7 +89,13 @@ sub preprocess (@) {
        # Metadata collection that needs to happen during the scan pass.
        if ($key eq 'title') {
                $pagestate{$page}{meta}{title}=HTML::Entities::encode_numeric($value);
-               # fallthrough
+               if (exists $params{sort}) {
+                       $pagestate{$page}{meta}{titlesort}=$params{sort};
+               }
+               else {
+                       $pagestate{$page}{meta}{titlesort}=$value;
+               }
+               return "";
        }
        elsif ($key eq 'description') {
                $pagestate{$page}{meta}{description}=HTML::Entities::encode_numeric($value);
@@ -115,12 +122,22 @@ sub preprocess (@) {
        }
        elsif ($key eq 'author') {
                $pagestate{$page}{meta}{author}=$value;
+               if (exists $params{sort}) {
+                       $pagestate{$page}{meta}{authorsort}=$params{sort};
+               }
+               else {
+                       $pagestate{$page}{meta}{authorsort}=$value;
+               }
                # fallthorough
        }
        elsif ($key eq 'authorurl') {
                $pagestate{$page}{meta}{authorurl}=$value if safeurl($value);
                # fallthrough
        }
+       elsif ($key eq 'permalink') {
+               $pagestate{$page}{meta}{permalink}=$value if safeurl($value);
+               # fallthrough
+       }
        elsif ($key eq 'date') {
                eval q{use Date::Parse};
                if (! $@) {
@@ -141,10 +158,9 @@ sub preprocess (@) {
                return;
        }
 
-       # Metadata collection that happens only during preprocessing pass.
+       # Metadata handling that happens only during preprocessing pass.
        if ($key eq 'permalink') {
                if (safeurl($value)) {
-                       $pagestate{$page}{meta}{permalink}=$value;
                        push @{$metaheaders{$page}}, scrub('<link rel="bookmark" href="'.encode_entities($value).'" />', $destpage);
                }
        }
@@ -191,11 +207,11 @@ sub preprocess (@) {
                if ($value !~ /^\w+:\/\//) {
                        my ($redir_page, $redir_anchor) = split /\#/, $value;
 
-                       add_depends($page, $redir_page);
                        my $link=bestlink($page, $redir_page);
                        if (! length $link) {
                                error gettext("redir page not found")
                        }
+                       add_depends($page, $link, deptype("presence"));
 
                        $value=urlto($link, $page);
                        $value.='#'.$redir_anchor if defined $redir_anchor;
@@ -236,6 +252,10 @@ sub preprocess (@) {
                push @{$metaheaders{$page}}, '<meta name="robots"'.
                        ' content="'.encode_entities($value).'" />';
        }
+       elsif ($key eq 'description') {
+               push @{$metaheaders{$page}}, '<meta name="'.encode_entities($key).
+                       '" content="'.encode_entities($value).'" />';
+       }
        else {
                push @{$metaheaders{$page}}, scrub('<meta name="'.encode_entities($key).
                        '" content="'.encode_entities($value).'" />', $destpage);
@@ -260,7 +280,7 @@ sub pagetemplate (@) {
                $template->param(title_overridden => 1);
        }
 
-       foreach my $field (qw{author authorurl permalink}) {
+       foreach my $field (qw{author authorurl description permalink}) {
                $template->param($field => $pagestate{$page}{meta}{$field})
                        if exists $pagestate{$page}{meta}{$field} && $template->query(name => $field);
        }
@@ -274,6 +294,33 @@ sub pagetemplate (@) {
        }
 }
 
+sub get_sort_key {
+       my $page = $_[0];
+       my $meta = $_[1];
+
+       # e.g. titlesort (also makes sense for author)
+       my $key = $pagestate{$page}{meta}{$meta . "sort"};
+       return $key if defined $key;
+
+       # e.g. title
+       $key = $pagestate{$page}{meta}{$meta};
+       return $key if defined $key;
+
+       # fall back to closer-to-core things
+       if ($meta eq 'title') {
+               return pagetitle(IkiWiki::basename($page));
+       }
+       elsif ($meta eq 'date') {
+               return $IkiWiki::pagectime{$page};
+       }
+       elsif ($meta eq 'updated') {
+               return $IkiWiki::pagemtime{$page};
+       }
+       else {
+               return '';
+       }
+}
+
 sub match {
        my $field=shift;
        my $page=shift;
@@ -291,21 +338,21 @@ sub match {
 
        if (defined $val) {
                if ($val=~/^$re$/i) {
-                       return IkiWiki::SuccessReason->new("$re matches $field of $page");
+                       return IkiWiki::SuccessReason->new("$re matches $field of $page", $page => $IkiWiki::DEPEND_CONTENT, "" => 1);
                }
                else {
-                       return IkiWiki::FailReason->new("$re does not match $field of $page");
+                       return IkiWiki::FailReason->new("$re does not match $field of $page", "" => 1);
                }
        }
        else {
-               return IkiWiki::FailReason->new("$page does not have a $field");
+               return IkiWiki::FailReason->new("$page does not have a $field", "" => 1);
        }
 }
 
 package IkiWiki::PageSpec;
 
 sub match_title ($$;@) {
-       IkiWiki::Plugin::meta::match("title", @_);      
+       IkiWiki::Plugin::meta::match("title", @_);
 }
 
 sub match_author ($$;@) {
@@ -324,4 +371,29 @@ sub match_copyright ($$;@) {
        IkiWiki::Plugin::meta::match("copyright", @_);
 }
 
+package IkiWiki::SortSpec;
+
+sub cmp_meta {
+       my $left = $_[0];
+       my $right = $_[1];
+       my $meta = $_[2];
+       error(gettext("sort=meta requires a parameter")) unless defined $meta;
+
+       if ($meta eq 'updated' || $meta eq 'date') {
+               return IkiWiki::Plugin::meta::get_sort_key($left, $meta)
+                       <=>
+                       IkiWiki::Plugin::meta::get_sort_key($right, $meta);
+       }
+
+       return IkiWiki::Plugin::meta::get_sort_key($left, $meta)
+               cmp
+               IkiWiki::Plugin::meta::get_sort_key($right, $meta);
+}
+
+# A prototype of how sort=title could behave in 4.0 or something
+sub cmp_meta_title {
+       $_[2] = 'title';
+       return cmp_meta(@_);
+}
+
 1