Added a comment

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

diff --git a/IkiWiki/Plugin/meta.pm b/IkiWiki/Plugin/meta.pm
index 4aa545a93a67c6aa759a4aa67d7aa2ff65e6c66a..e9736584c5836fb9c4a077819ca6b939fd248aa9 100644 (file)
--- a/IkiWiki/Plugin/meta.pm
+++ b/IkiWiki/Plugin/meta.pm
@@ -4,44 +4,74 @@ package IkiWiki::Plugin::meta;
 
 use warnings;
 use strict;
 
 use warnings;
 use strict;

-use IkiWiki 2.00;
+use IkiWiki 3.00;

 
 

-my %meta;
-my %title;
-my %permalink;
-my %author;
-my %authorurl;
-my %license;
-my %copyright;
+my %metaheaders;

 
 

-sub import { #{{{
+sub import {
+       hook(type => "getsetup", id => "meta", call => \&getsetup);
+       hook(type => "needsbuild", id => "meta", call => \&needsbuild);

        hook(type => "preprocess", id => "meta", call => \&preprocess, scan => 1);
        hook(type => "preprocess", id => "meta", call => \&preprocess, scan => 1);

-       hook(type => "filter", id => "meta", call => \&filter);

        hook(type => "pagetemplate", id => "meta", call => \&pagetemplate);
        hook(type => "pagetemplate", id => "meta", call => \&pagetemplate);

-} # }}}
+}

 
 

-sub filter (@) { #{{{
-       my %params=@_;
-       
-       $meta{$params{page}}='';
-       delete $pagestate{$params{page}}{meta}{redir};
+sub getsetup () {
+       return
+               plugin => {
+                       safe => 1,
+                       rebuild => undef,
+                       section => "core",
+               },
+}

 
 

-       return $params{content};
-} # }}}
+sub needsbuild (@) {
+       my $needsbuild=shift;
+       foreach my $page (keys %pagestate) {
+               if (exists $pagestate{$page}{meta}) {
+                       if (exists $pagesources{$page} &&
+                           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};
+                       }
+               }
+       }
+       return $needsbuild;
+}

 
 

-sub scrub ($) { #{{{
+sub scrub ($$$) {

        if (IkiWiki::Plugin::htmlscrubber->can("sanitize")) {
        if (IkiWiki::Plugin::htmlscrubber->can("sanitize")) {

-               return IkiWiki::Plugin::htmlscrubber::sanitize(content => shift);
+               return IkiWiki::Plugin::htmlscrubber::sanitize(
+                       content => shift, page => shift, destpage => shift);

        }
        else {
                return shift;
        }
        }
        else {
                return shift;
        }

-} #}}}
+}

 
 

-sub preprocess (@) { #{{{
-       if (! @_) {
-               return "";
+sub safeurl ($) {
+       my $url=shift;
+       if (exists $IkiWiki::Plugin::htmlscrubber::{safe_url_regexp} &&
+           defined $IkiWiki::Plugin::htmlscrubber::safe_url_regexp) {
+               return $url=~/$IkiWiki::Plugin::htmlscrubber::safe_url_regexp/;
+       }
+       else {
+               return 1;

        }
        }

+}
+
+sub htmlize ($$$) {
+       my $page = shift;
+       my $destpage = shift;
+
+       return IkiWiki::htmlize($page, $destpage, pagetype($pagesources{$page}),
+               IkiWiki::linkify($page, $destpage,
+               IkiWiki::preprocess($page, $destpage, shift)));
+}
+
+sub preprocess (@) {
+       return "" unless @_;

        my %params=@_;
        my $key=shift;
        my $value=$params{$key};
        my %params=@_;
        my $key=shift;
        my $value=$params{$key};


@@ -53,34 +83,161 @@ sub preprocess (@) { #{{{
        delete $params{preview};
 
        eval q{use HTML::Entities};
        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);
 
        # 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");
+       # Metadata collection that needs to happen during the scan pass.
+       if ($key eq 'title') {
+               $pagestate{$page}{meta}{title}=$value;
+               if (exists $params{sortas}) {
+                       $pagestate{$page}{meta}{titlesort}=$params{sortas};

                }
                else {
                }
                else {

-                       # hidden WikiLink
-                       push @{$links{$page}}, $value;
+                       delete $pagestate{$page}{meta}{titlesort};
+               }
+               return "";
+       }
+       elsif ($key eq 'description') {
+               $pagestate{$page}{meta}{description}=$value;
+               # fallthrough
+       }
+       elsif ($key eq 'guid') {
+               $pagestate{$page}{meta}{guid}=$value;
+               # fallthrough
+       }
+       elsif ($key eq 'license') {
+               push @{$metaheaders{$page}}, '<link rel="license" href="#page_license" />';
+               $pagestate{$page}{meta}{license}=$value;
+               return "";
+       }
+       elsif ($key eq 'copyright') {
+               push @{$metaheaders{$page}}, '<link rel="copyright" href="#page_copyright" />';
+               $pagestate{$page}{meta}{copyright}=$value;
+               return "";
+       }
+       elsif ($key eq 'link' && ! %params) {
+               # hidden WikiLink
+               add_link($page, $value);
+               return "";
+       }
+       elsif ($key eq 'author') {
+               $pagestate{$page}{meta}{author}=$value;
+               if (exists $params{sortas}) {
+                       $pagestate{$page}{meta}{authorsort}=$params{sortas};
+               }
+               else {
+                       delete $pagestate{$page}{meta}{authorsort};
+               }
+               # 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 (! $@) {
+                       my $time = str2time($value);
+                       $IkiWiki::pagectime{$page}=$time if defined $time;
+               }
+       }
+       elsif ($key eq 'updated') {
+               eval q{use Date::Parse};
+               if (! $@) {
+                       my $time = str2time($value);
+                       $pagestate{$page}{meta}{updated}=$time if defined $time;
+               }
+       }
+
+       if (! defined wantarray) {
+               # avoid collecting duplicate data during scan pass
+               return;
+       }
+
+       # Metadata handling that happens only during preprocessing pass.
+       if ($key eq 'permalink') {
+               if (safeurl($value)) {
+                       push @{$metaheaders{$page}}, scrub('<link rel="bookmark" href="'.encode_entities($value).'" />', $page, $destpage);
+               }
+       }
+       elsif ($key eq 'stylesheet') {
+               my $rel=exists $params{rel} ? $params{rel} : "alternate stylesheet";
+               my $title=exists $params{title} ? $params{title} : $value;
+               # adding .css to the value prevents using any old web
+               # editable page as a stylesheet
+               my $stylesheet=bestlink($page, $value.".css");
+               if (! length $stylesheet) {
+                       error gettext("stylesheet not found")
+               }
+               push @{$metaheaders{$page}}, scrub('<link href="'.urlto($stylesheet, $page).
+                       '" rel="'.encode_entities($rel).
+                       '" title="'.encode_entities($title).
+                       "\" type=\"text/css\" />", $page, $destpage);
+       }
+       elsif ($key eq 'script') {
+               my $defer=exists $params{defer} ? ' defer="defer"' : '';
+               my $async=exists $params{async} ? ' async="async"' : '';
+               my $js=bestlink($page, $value.".js");
+               if (! length $js) {
+                       error gettext("script not found");
+               }
+               push @{$metaheaders{$page}}, scrub('<script src="'.urlto($js, $page).
+                       '"' . $defer . $async . ' type="text/javascript"></script>',
+                       $page, $destpage);
+       }
+       elsif ($key eq 'openid') {
+               my $delegate=0; # both by default
+               if (exists $params{delegate}) {
+                       $delegate = 1 if lc $params{delegate} eq 'openid';
+                       $delegate = 2 if lc $params{delegate} eq 'openid2';
+               }
+               if (exists $params{server} && safeurl($params{server})) {
+                       push @{$metaheaders{$page}}, '<link href="'.encode_entities($params{server}).
+                               '" rel="openid.server" />' if $delegate ne 2;
+                       push @{$metaheaders{$page}}, '<link href="'.encode_entities($params{server}).
+                               '" rel="openid2.provider" />' if $delegate ne 1;
+               }
+               if (safeurl($value)) {
+                       push @{$metaheaders{$page}}, '<link href="'.encode_entities($value).
+                               '" rel="openid.delegate" />' if $delegate ne 2;
+                       push @{$metaheaders{$page}}, '<link href="'.encode_entities($value).
+                               '" rel="openid2.local_id" />' if $delegate ne 1;
+               }
+               if (exists $params{"xrds-location"} && safeurl($params{"xrds-location"})) {
+                       # force url absolute
+                       eval q{use URI};
+                       error($@) if $@;
+                       my $url=URI->new_abs($params{"xrds-location"}, $config{url});
+                       push @{$metaheaders{$page}}, '<meta http-equiv="X-XRDS-Location" '.
+                               'content="'.encode_entities($url).'" />';
+               }
+       }
+       elsif ($key eq 'foaf') {
+               if (safeurl($value)) {
+                       push @{$metaheaders{$page}}, '<link rel="meta" '.
+                               'type="application/rdf+xml" title="FOAF" '.
+                               'href="'.encode_entities($value).'" />';

                }
        }
        elsif ($key eq 'redir') {
                }
        }
        elsif ($key eq 'redir') {

-               return "" if $destpage ne $page;
+               return "" if $page ne $destpage;

                my $safe=0;
                if ($value !~ /^\w+:\/\//) {
                my $safe=0;
                if ($value !~ /^\w+:\/\//) {

-                       add_depends($page, $value);
-                       my $link=bestlink($page, $value);
+                       my ($redir_page, $redir_anchor) = split /\#/, $value;
+
+                       my $link=bestlink($page, $redir_page);

                        if (! length $link) {
                        if (! length $link) {

-                               return "[[meta ".gettext("redir page not found")."]]";
+                               error gettext("redir page not found")

                        }
                        }

+                       add_depends($page, $link, deptype("presence"));

 
                        $value=urlto($link, $page);
 
                        $value=urlto($link, $page);

+                       $value.='#'.$redir_anchor if defined $redir_anchor;

                        $safe=1;
 
                        # redir cycle detection
                        $safe=1;
 
                        # redir cycle detection


@@ -89,7 +246,7 @@ sub preprocess (@) { #{{{
                        my %seen;
                        while (exists $pagestate{$at}{meta}{redir}) {
                                if ($seen{$at}) {
                        my %seen;
                        while (exists $pagestate{$at}{meta}{redir}) {
                                if ($seen{$at}) {

-                                       return "[[meta ".gettext("redir cycle is not allowed")."]]";
+                                       error gettext("redir cycle is not allowed")

                                }
                                $seen{$at}=1;
                                $at=$pagestate{$at}{meta}{redir};
                                }
                                $seen{$at}=1;
                                $at=$pagestate{$at}{meta}{redir};


@@ -99,108 +256,189 @@ sub preprocess (@) { #{{{
                        $value=encode_entities($value);
                }
                my $delay=int(exists $params{delay} ? $params{delay} : 0);
                        $value=encode_entities($value);
                }
                my $delay=int(exists $params{delay} ? $params{delay} : 0);

-               my $redir="<meta http-equiv=\"refresh\" content=\"$delay; URL=$value\">";
+               my $redir="<meta http-equiv=\"refresh\" content=\"$delay; URL=$value\" />";

                if (! $safe) {
                if (! $safe) {

-                       $redir=scrub($redir);
+                       $redir=scrub($redir, $page, $destpage);

                }
                }

-               $meta{$page}.=$redir;
-       }
-       elsif ($key eq 'title') {
-               $title{$page}=HTML::Entities::encode_numeric($value);
+               push @{$metaheaders{$page}}, $redir;

        }
        }

-       elsif ($key eq 'permalink') {
-               $permalink{$page}=$value;
-               $meta{$page}.=scrub("<link rel=\"bookmark\" href=\"".encode_entities($value)."\" />\n");
-       }
-       elsif ($key eq 'date') {
-               eval q{use Date::Parse};
-               if (! $@) {
-                       my $time = str2time($value);
-                       $IkiWiki::pagectime{$page}=$time if defined $time;
-               }
-       }
-       elsif ($key eq 'stylesheet') {
-               my $rel=exists $params{rel} ? $params{rel} : "alternate stylesheet";
-               my $title=exists $params{title} ? $params{title} : $value;
-               # adding .css to the value prevents using any old web
-               # editable page as a stylesheet
-               my $stylesheet=bestlink($page, $value.".css");
-               if (! length $stylesheet) {
-                       return "[[meta ".gettext("stylesheet not found")."]]";
+       elsif ($key eq 'link') {
+               if (%params) {
+                       push @{$metaheaders{$page}}, scrub("<link href=\"".encode_entities($value)."\" ".
+                               join(" ", map {
+                                       encode_entities($_)."=\"".encode_entities(decode_entities($params{$_}))."\""
+                               } keys %params).
+                               " />\n", $page, $destpage);

                }
                }

-               $meta{$page}.='<link href="'.urlto($stylesheet, $page).
-                       '" rel="'.encode_entities($rel).
-                       '" title="'.encode_entities($title).
-                       "\" type=\"text/css\" />\n";

        }
        }

-       elsif ($key eq 'openid') {
-               if (exists $params{server}) {
-                       $meta{$page}.='<link href="'.encode_entities($params{server}).
-                               "\" rel=\"openid.server\" />\n";
-               }
-               $meta{$page}.='<link href="'.encode_entities($value).
-                       "\" rel=\"openid.delegate\" />\n";
+       elsif ($key eq 'robots') {
+               push @{$metaheaders{$page}}, '<meta name="robots"'.
+                       ' content="'.encode_entities($value).'" />';

        }
        }

-       elsif ($key eq 'license') {
-               $meta{$page}.="<link rel=\"license\" href=\"#page_license\" />\n";
-               $license{$page}=$value;
+       elsif ($key eq 'description') {
+               push @{$metaheaders{$page}}, '<meta name="'.
+                       encode_entities($key).
+                       '" content="'.encode_entities($value).'" />';

        }
        }

-       elsif ($key eq 'copyright') {
-               $meta{$page}.="<link rel=\"copyright\" href=\"#page_copyright\" />\n";
-               $copyright{$page}=$value;
+       elsif ($key eq 'name') {
+               push @{$metaheaders{$page}}, scrub('<meta '.$key.'="'.
+                       encode_entities($value).
+                       join(' ', map { "$_=\"$params{$_}\"" } keys %params).
+                       ' />', $page, $destpage);

        }
        else {
        }
        else {

-               $meta{$page}.=scrub("<meta name=\"".encode_entities($key).
-                       "\" content=\"".encode_entities($value)."\" />\n");
-               if ($key eq 'author') {
-                       $author{$page}=$value;
-               }
-               elsif ($key eq 'authorurl') {
-                       $authorurl{$page}=$value;
-               }
+               push @{$metaheaders{$page}}, scrub('<meta name="'.
+                       encode_entities($key).'" content="'.
+                       encode_entities($value).'" />', $page, $destpage);

        }
 
        return "";
        }
 
        return "";

-} # }}}
+}

 
 

-sub pagetemplate (@) { #{{{
+sub pagetemplate (@) {

        my %params=@_;
         my $page=$params{page};
         my $destpage=$params{destpage};
         my $template=$params{template};
 
        my %params=@_;
         my $page=$params{page};
         my $destpage=$params{destpage};
         my $template=$params{template};
 

-       $template->param(meta => $meta{$page})
-               if exists $meta{$page} && $template->query(name => "meta");
-       if (exists $title{$page} && $template->query(name => "title")) {
-               $template->param(title => $title{$page});
+       if (exists $metaheaders{$page} && $template->query(name => "meta")) {
+               # avoid duplicate meta lines
+               my %seen;
+               $template->param(meta => join("\n", grep { (! $seen{$_}) && ($seen{$_}=1) } @{$metaheaders{$page}}));
+       }
+       if (exists $pagestate{$page}{meta}{title} && $template->query(name => "title")) {
+               eval q{use HTML::Entities};
+               $template->param(title => HTML::Entities::encode_numeric($pagestate{$page}{meta}{title}));

                $template->param(title_overridden => 1);
        }
                $template->param(title_overridden => 1);
        }

-       $template->param(permalink => $permalink{$page})
-               if exists $permalink{$page} && $template->query(name => "permalink");
-       $template->param(author => $author{$page})
-               if exists $author{$page} && $template->query(name => "author");
-       $template->param(authorurl => $authorurl{$page})
-               if exists $authorurl{$page} && $template->query(name => "authorurl");
-               
-       if ($page ne $destpage &&
-           ((exists $license{$page}   && ! exists $license{$destpage}) ||
-            (exists $copyright{$page} && ! exists $copyright{$destpage}))) {
-               # Force a scan of the destpage to get its copyright/license
-               # info. If the info is declared after an inline, it will
-               # otherwise not be available at this point.
-               IkiWiki::scan($pagesources{$destpage});
-       }
-
-       if (exists $license{$page} && $template->query(name => "license") &&
-           ($page eq $destpage || ! exists $license{$destpage} ||
-            $license{$page} ne $license{$destpage})) {
-               $template->param(license => IkiWiki::linkify($page, $destpage, $license{$page}));
-       }
-       if (exists $copyright{$page} && $template->query(name => "copyright") &&
-           ($page eq $destpage || ! exists $copyright{$destpage} ||
-            $copyright{$page} ne $copyright{$destpage})) {
-               $template->param(copyright => IkiWiki::linkify($page, $destpage, $copyright{$page}));
-       }
-} # }}}
+
+       foreach my $field (qw{author authorurl permalink}) {
+               $template->param($field => $pagestate{$page}{meta}{$field})
+                       if exists $pagestate{$page}{meta}{$field} && $template->query(name => $field);
+       }
+
+       foreach my $field (qw{permalink}) {
+               $template->param($field => IkiWiki::urlabs($pagestate{$page}{meta}{$field}, $config{url}))
+                       if exists $pagestate{$page}{meta}{$field} && $template->query(name => $field);
+       }
+
+       foreach my $field (qw{description}) {
+               eval q{use HTML::Entities};
+               $template->param($field => HTML::Entities::encode_numeric($pagestate{$page}{meta}{$field}))
+                       if exists $pagestate{$page}{meta}{$field} && $template->query(name => $field);
+       }
+
+       foreach my $field (qw{license copyright}) {
+               if (exists $pagestate{$page}{meta}{$field} && $template->query(name => $field) &&
+                   ($page eq $destpage || ! exists $pagestate{$destpage}{meta}{$field} ||
+                    $pagestate{$page}{meta}{$field} ne $pagestate{$destpage}{meta}{$field})) {
+                       $template->param($field => htmlize($page, $destpage, $pagestate{$page}{meta}{$field}));
+               }
+       }
+}
+
+sub get_sort_key {
+       my $page = shift;
+       my $meta = shift;
+
+       # 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;
+       
+       # turn glob into a safe regexp
+       my $re=IkiWiki::glob2re(shift);
+
+       my $val;
+       if (exists $pagestate{$page}{meta}{$field}) {
+               $val=$pagestate{$page}{meta}{$field};
+       }
+       elsif ($field eq 'title') {
+               $val = pagetitle($page);
+       }
+
+       if (defined $val) {
+               if ($val=~$re) {
+                       return IkiWiki::SuccessReason->new("$re matches $field of $page", $page => $IkiWiki::DEPEND_CONTENT, "" => 1);
+               }
+               else {
+                       return IkiWiki::FailReason->new("$re does not match $field of $page", $page => $IkiWiki::DEPEND_CONTENT, "" => 1);
+               }
+       }
+       else {
+               return IkiWiki::FailReason->new("$page does not have a $field", $page => $IkiWiki::DEPEND_CONTENT);
+       }
+}
+
+package IkiWiki::PageSpec;
+
+sub match_title ($$;@) {
+       IkiWiki::Plugin::meta::match("title", @_);
+}
+
+sub match_author ($$;@) {
+       IkiWiki::Plugin::meta::match("author", @_);
+}
+
+sub match_authorurl ($$;@) {
+       IkiWiki::Plugin::meta::match("authorurl", @_);
+}
+
+sub match_license ($$;@) {
+       IkiWiki::Plugin::meta::match("license", @_);
+}
+
+sub match_copyright ($$;@) {
+       IkiWiki::Plugin::meta::match("copyright", @_);
+}
+
+sub match_guid ($$;@) {
+       IkiWiki::Plugin::meta::match("guid", @_);
+}
+
+package IkiWiki::SortSpec;
+
+sub cmp_meta {
+       my $meta = shift;
+       error(gettext("sort=meta requires a parameter")) unless defined $meta;
+
+       if ($meta eq 'updated' || $meta eq 'date') {
+               return IkiWiki::Plugin::meta::get_sort_key($a, $meta)
+                       <=>
+                       IkiWiki::Plugin::meta::get_sort_key($b, $meta);
+       }
+
+       return IkiWiki::Plugin::meta::get_sort_key($a, $meta)
+               cmp
+               IkiWiki::Plugin::meta::get_sort_key($b, $meta);
+}
+
+# A prototype of how sort=title could behave in 4.0 or something
+sub cmp_meta_title {
+       $_[0] = 'title';
+       return cmp_meta(@_);
+}

 
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