path: root/IkiWiki/Plugin/inline.pm

#!/usr/bin/perl
# Page inlining and blogging.
package IkiWiki::Plugin::inline;

use warnings;
use strict;
use IkiWiki;

sub import { #{{{
    IkiWiki::hook(type => "preprocess", id => "inline", 
        call => \&IkiWiki::preprocess_inline);
    # Hook to change to do pinging since it's called late.
    # This ensures each page only pings once and prevents slow
    # pings interrupting page builds.
    IkiWiki::hook(type => "change", id => "inline", 
        call => \&IkiWiki::pingurl);
} # }}}

# Back to ikiwiki namespace for the rest, this code is very much
# internal to ikiwiki even though it's separated into a plugin.
package IkiWiki;

my %toping;
my $processing_inline=0;

sub preprocess_inline (@) { #{{{
    my %params=@_;

    if (! exists $params{pages}) {
        return "";
    }
    if (! exists $params{archive}) {
        $params{archive}="no";
    }
    if (! exists $params{show} && $params{archive} eq "no") {
        $params{show}=10;
    }
    if (! exists $params{rss}) {
        $params{rss}="yes";
    }

    # Avoid nested inlines, to avoid loops etc.
    if ($processing_inline) {
        return "";
    }
    $processing_inline=1;

    my @list;
    foreach my $page (keys %pagesources) {
        next if $page eq $params{page};
        if (pagespec_match($page, $params{pages})) {
            push @list, $page;
        }
    }
    @list=sort { $pagectime{$b} <=> $pagectime{$a} } @list;
    if ($params{show} && @list > $params{show}) {
        @list=@list[0..$params{show} - 1];
    }

    add_depends($params{page}, $params{pages});

    my $ret="";
    
    if (exists $params{rootpage} && $config{cgiurl}) {
        # Add a blog post form, with a rss link button.
        my $formtemplate=template("blogpost.tmpl", blind_cache => 1);
        $formtemplate->param(cgiurl => $config{cgiurl});
        $formtemplate->param(rootpage => $params{rootpage});
        if ($config{rss}) {
            $formtemplate->param(rssurl => rsspage(basename($params{page})));
        }
        $ret.=$formtemplate->output;
    }
    elsif ($config{rss} && $params{rss} eq "yes") {
        # Add a rss link button.
        my $linktemplate=template("rsslink.tmpl", blind_cache => 1);
        $linktemplate->param(rssurl => rsspage(basename($params{page})));
        $ret.=$linktemplate->output;
    }
    
    my $template=template(
        (($params{archive} eq "no")
            ? "inlinepage.tmpl"
            : "inlinepagetitle.tmpl"),
        blind_cache => 1,
    );
    
    foreach my $page (@list) {
        # Don't use htmllink because this way the title is separate
        # and can be overridden by other plugins.
        my $link=htmlpage(bestlink($params{page}, $page));
        $link=abs2rel($link, dirname($params{page}));
        $template->param(pageurl => $link);
        $template->param(title => pagetitle(basename($page)));
        $template->param(content => get_inline_content($page, $params{page}))
            if $params{archive} eq "no";
        $template->param(ctime => displaytime($pagectime{$page}));

        run_hooks(pagetemplate => sub {
            shift->(page => $page, destpage => $params{page},
                template => $template,);
        });

        $ret.=$template->output;
        $template->clear_params;
    }
    
    # TODO: should really add this to renderedfiles and call
    # check_overwrite, but currently renderedfiles
    # only supports listing one file per page.
    if ($config{rss} && $params{rss} eq "yes") {
        writefile(rsspage($params{page}), $config{destdir},
            genrss($params{page}, @list));
        $toping{$params{page}}=1 unless $config{rebuild};
    }
    
    $processing_inline=0;

    return $ret;
} #}}}

sub get_inline_content ($$) { #{{{
    my $page=shift;
    my $destpage=shift;
    
    my $file=$pagesources{$page};
    my $type=pagetype($file);
    if (defined $type) {
        return htmlize($type, preprocess($page, $destpage, linkify($page, $destpage, readfile(srcfile($file)))));
    }
    else {
        return "";
    }
} #}}}

sub date_822 ($) { #{{{
    my $time=shift;

    eval q{use POSIX};
    return POSIX::strftime("%a, %d %b %Y %H:%M:%S %z", localtime($time));
} #}}}

sub absolute_urls ($$) { #{{{
    # sucky sub because rss sucks
    my $content=shift;
    my $url=shift;

    $url=~s/[^\/]+$//;
    
    $content=~s/<a\s+href="(?![^:]+:\/\/)([^"]+)"/<a href="$url$1"/ig;
    $content=~s/<img\s+src="(?![^:]+:\/\/)([^"]+)"/<img src="$url$1"/ig;
    return $content;
} #}}}

sub rsspage ($) { #{{{
    my $page=shift;

    return $page.".rss";
} #}}}

sub genrss ($@) { #{{{
    my $page=shift;
    my @pages=@_;
    
    my $url="$config{url}/".htmlpage($page);
    
    my $itemtemplate=template("rssitem.tmpl", blind_cache => 1, 
        die_on_bad_params => 0);
    my $content="";
    foreach my $p (@pages) {
        next unless exists $renderedfiles{$p};

        $itemtemplate->param(
            title => pagetitle(basename($p)),
            url => "$config{url}/$renderedfiles{$p}",
            pubdate => date_822($pagectime{$p}),
            content => absolute_urls(get_inline_content($p, $page), $url),
        );
        run_hooks(pagetemplate => sub {
            shift->(page => $p, destpage => $page,
                template => $itemtemplate);
        });
        $content.=$itemtemplate->output;
        $itemtemplate->clear_params;
    }

    my $template=template("rsspage.tmpl", blind_cache => 1);
    $template->param(
        title => $config{wikiname},
        wikiname => $config{wikiname},
        pageurl => $url,
        content => $content,
    );
    
    run_hooks(pagetemplate => sub {
        shift->(page => $page, destpage => $page,
            template => $template);
    });
    
    return $template->output;
} #}}}

sub pingurl (@) { #{{{
    return unless $config{pingurl} && %toping;

    eval q{require RPC::XML::Client};
    if ($@) {
        debug("RPC::XML::Client not found, not pinging");
        return;
    }

    foreach my $page (keys %toping) {
        my $title=pagetitle(basename($page));
        my $url="$config{url}/".htmlpage($page);
        foreach my $pingurl (@{$config{pingurl}}) {
            my $client = RPC::XML::Client->new($pingurl);
            my $req = RPC::XML::request->new('weblogUpdates.ping',
                $title, $url);
            debug("Pinging $pingurl for $page");
            my $res = $client->send_request($req);
            if (! ref $res) {
                debug("Did not receive response to ping");
            }
            my $r=$res->value;
            if (! exists $r->{flerror} || $r->{flerror}) {
                debug("Ping rejected: ".$r->{message});
            }
        }
    }
} #}}}

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