path: root/IkiWiki/Plugin/inline.pm

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

use warnings;
use strict;
use IkiWiki 1.00;
use IkiWiki::Render; # for displaytime
use URI;

sub import { #{{{
    hook(type => "preprocess", id => "inline", 
        call => \&IkiWiki::preprocess_inline);
    hook(type => "pagetemplate", id => "inline",
        call => \&IkiWiki::pagetemplate_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.
    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 %feedlinks;

sub yesno ($) { #{{{
    my $val=shift;
    return (defined $val && lc($val) eq "yes");
} #}}}

sub preprocess_inline (@) { #{{{
    my %params=@_;
    
    if (! exists $params{pages}) {
        return "";
    }
    my $raw=yesno($params{raw});
    my $archive=yesno($params{archive});
    my $rss=($config{rss} && exists $params{rss}) ? yesno($params{rss}) : $config{rss};
    my $atom=($config{atom} && exists $params{atom}) ? yesno($params{atom}) : $config{atom};
    my $feeds=exists $params{feeds} ? yesno($params{feeds}) : 1;
    if (! exists $params{show} && ! $archive) {
        $params{show}=10;
    }
    my $desc;
    if (exists $params{description}) {
        $desc = $params{description} 
    } else {
        $desc = $config{wikiname};
    }
    my $actions=yesno($params{actions});

    my @list;
    foreach my $page (keys %pagesources) {
        next if $page eq $params{page};
        if (pagespec_match($page, $params{pages})) {
            push @list, $page;
        }
    }

    if (exists $params{sort} && $params{sort} eq 'title') {
        @list=sort @list;
    }
    elsif (! exists $params{sort} || $params{sort} eq 'age') {
        @list=sort { $pagectime{$b} <=> $pagectime{$a} } @list;
    }
    else {
        return "unknown sort type $params{sort}";
    }

    if (exists $params{skip}) {
        @list=@list[$params{skip} .. scalar @list - 1];
    }
    
    if ($params{show} && @list > $params{show}) {
        @list=@list[0..$params{show} - 1];
    }

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

    my $rssurl=rsspage(basename($params{page}));
    my $atomurl=atompage(basename($params{page}));
    my $ret="";

    if (exists $params{rootpage} && $config{cgiurl}) {
        # Add a blog post form, with feed buttons.
        my $formtemplate=template("blogpost.tmpl", blind_cache => 1);
        $formtemplate->param(cgiurl => $config{cgiurl});
        $formtemplate->param(rootpage => $params{rootpage});
        $formtemplate->param(rssurl => $rssurl) if $feeds && $rss;
        $formtemplate->param(atomurl => $atomurl) if $feeds && $atom;
        $ret.=$formtemplate->output;
    }
    elsif ($feeds) {
        # Add feed buttons.
        my $linktemplate=template("feedlink.tmpl", blind_cache => 1);
        $linktemplate->param(rssurl => $rssurl) if $rss;
        $linktemplate->param(atomurl => $atomurl) if $atom;
        $ret.=$linktemplate->output;
    }
    
    my $template=template(
        ($archive ? "inlinepagetitle.tmpl" : "inlinepage.tmpl"),
        blind_cache => 1,
    ) unless $raw;
    
    foreach my $page (@list) {
        my $file = $pagesources{$page};
        my $type = pagetype($file);
        if (! $raw || ($raw && ! defined $type)) {
            # Get the content before populating the template,
            # since getting the content uses the same template
            # if inlines are nested.
            # TODO: if $archive=1, the only reason to do this
            # is to let the meta plugin get page title info; so stop
            # calling this next line then once the meta plugin can
            # store that accross runs (also tags plugin).
            my $content=get_inline_content($page, $params{destpage});
            # Don't use htmllink because this way the title is separate
            # and can be overridden by other plugins.
            my $link=bestlink($params{page}, $page);
            $link=htmlpage($link) if defined $type;
            $link=abs2rel($link, dirname($params{destpage}));
            $template->param(pageurl => $link);
            $template->param(title => pagetitle(basename($page)));
            $template->param(content => $content);
            $template->param(ctime => displaytime($pagectime{$page}));

            if ($actions) {
                my $file = $pagesources{$page};
                my $type = pagetype($file);
                if ($config{discussion}) {
                    $template->param(have_actions => 1);
                    $template->param(discussionlink => htmllink($page, $page, "Discussion", 1, 1));
                }
                if (length $config{cgiurl} && defined $type) {
                    $template->param(have_actions => 1);
                    $template->param(editurl => cgiurl(do => "edit", page => $page));
                }
            }

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

            $ret.=$template->output;
            $template->clear_params;
        }
        else {
            if (defined $type) {
                $ret.="\n".
                      linkify($page, $params{page},
                      preprocess($page, $params{page},
                      filter($page,
                      readfile(srcfile($file)))));
            }
        }
    }
    
    if ($feeds && $rss) {
        will_render($params{page}, rsspage($params{page}));
        writefile(rsspage($params{page}), $config{destdir},
            genfeed("rss", $rssurl, $desc, $params{page}, @list));
        $toping{$params{page}}=1 unless $config{rebuild};
        $feedlinks{$params{destpage}}=qq{<link rel="alternate" type="application/rss+xml" title="RSS" href="$rssurl" />};
    }
    if ($feeds && $atom) {
        will_render($params{page}, atompage($params{page}));
        writefile(atompage($params{page}), $config{destdir},
            genfeed("atom", $atomurl, $desc, $params{page}, @list));
        $toping{$params{page}}=1 unless $config{rebuild};
        $feedlinks{$params{destpage}}=qq{<link rel="alternate" type="application/atom+xml" title="Atom" href="$atomurl" />};
    }
    
    return $ret;
} #}}}

sub pagetemplate_inline (@) { #{{{
    my %params=@_;
    my $page=$params{page};
    my $template=$params{template};

    $template->param(feedlinks => $feedlinks{$page})
        if exists $feedlinks{$page} && $template->query(name => "feedlinks");
} #}}}

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

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

    eval q{use POSIX};
    error($@) if $@;
    my $lc_time= POSIX::setlocale(&POSIX::LC_TIME);
    POSIX::setlocale(&POSIX::LC_TIME, "C");
    my $ret=POSIX::strftime("%a, %d %b %Y %H:%M:%S %z", localtime($time));
    POSIX::setlocale(&POSIX::LC_TIME, $lc_time);
    return $ret;
} #}}}

sub date_3339 ($) { #{{{
    my $time=shift;

    eval q{use POSIX};
    error($@) if $@;
    my $lc_time= POSIX::setlocale(&POSIX::LC_TIME);
    POSIX::setlocale(&POSIX::LC_TIME, "C");
    my $ret=POSIX::strftime("%Y-%m-%dT%H:%M:%SZ", localtime($time));
    POSIX::setlocale(&POSIX::LC_TIME, $lc_time);
    return $ret;
} #}}}

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 atompage ($) { #{{{
    my $page=shift;

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

sub genfeed ($$$$@) { #{{{
    my $feedtype=shift;
    my $feedurl=shift;
    my $feeddesc=shift;
    my $page=shift;
    my @pages=@_;
    
    my $url=URI->new(encode_utf8($config{url}."/".htmlpage($page)));
    
    my $itemtemplate=template($feedtype."item.tmpl", blind_cache => 1);
    my $content="";
    my $lasttime = 0;
    foreach my $p (@pages) {
        my $u=URI->new(encode_utf8($config{url}."/".htmlpage($p)));

        $itemtemplate->param(
            title => pagetitle(basename($p)),
            url => $u,
            permalink => $u,
            date_822 => date_822($pagectime{$p}),
            date_3339 => date_3339($pagectime{$p}),
        );

        my $pcontent = absolute_urls(get_inline_content($p, $page), $url);
        if ($itemtemplate->query(name => "enclosure")) {
            my $file=$pagesources{$p};
            my $type=pagetype($file);
            if (defined $type) {
                $itemtemplate->param(content => $pcontent);
            }
            else {
                my ($a, $b, $c, $d, $e, $f, $g, $size) = stat(srcfile($file));
                my $mime="unknown";
                eval q{use File::MimeInfo};
                if (! $@) {
                    $mime = mimetype($file);
                }
                $itemtemplate->param(
                    enclosure => $u,
                    type => $mime,
                    length => $size,
                );
            }
        }
        else {
            $itemtemplate->param(content => $pcontent);
        }

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

        $content.=$itemtemplate->output;
        $itemtemplate->clear_params;

        $lasttime = $pagectime{$p} if $pagectime{$p} > $lasttime;
    }

    my $template=template($feedtype."page.tmpl", blind_cache => 1);
    $template->param(
        title => $page ne "index" ? pagetitle($page) : $config{wikiname},
        wikiname => $config{wikiname},
        pageurl => $url,
        content => $content,
        feeddesc => $feeddesc,
        feeddate => date_3339($lasttime),
        feedurl => $feedurl,
        version => $IkiWiki::version,
    );
    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;
    }

    # daemonize here so slow pings don't slow down wiki updates
    eval q{use POSIX ’setsid’};
    chdir '/';
    open STDIN, '/dev/null';
    open STDOUT, '>/dev/null';
    defined(my $pid = fork) or error("Can't fork: $!");
    return if $pid;
    setsid() or error("Can't start a new session: $!");
    open STDERR, '>&STDOUT' or error("Can’t dup stdout: $!");

    # Don't need to keep a lock on the wiki as a daemon.
    IkiWiki::unlockwiki();

    foreach my $page (keys %toping) {
        my $title=pagetitle(basename($page));
        my $url="$config{url}/".htmlpage($page);
        foreach my $pingurl (@{$config{pingurl}}) {
            debug("Pinging $pingurl for $page");
            eval {
                my $client = RPC::XML::Client->new($pingurl);
                my $req = RPC::XML::request->new('weblogUpdates.ping',
                $title, $url);
                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: ".(exists $r->{message} ? $r->{message} : "[unknown reason]"));
                }
            };
            if ($@) {
                debug "Ping failed: $@";
            }
        }
    }

    exit 0; # daemon done
} #}}}

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