IkiWiki/Plugin/relativedate.pm



#!/usr/bin/perl
package IkiWiki::Plugin::relativedate;

use warnings;
no warnings 'redefine';
use strict;
use IkiWiki 3.00;
use POSIX ();
use Encode;

sub import {
    add_underlay("javascript");
    hook(type => "getsetup", id => "relativedate", call => \&getsetup);
    hook(type => "format", id => "relativedate", call => \&format);
    inject(name => "IkiWiki::displaytime", call => \&mydisplaytime);
}

sub getsetup () {
    return
        plugin => {
            safe => 1,
            rebuild => 1,
        },
}

sub format (@) {
        my %params=@_;

    if (! ($params{content}=~s!^(<body[^>]*>)!$1.include_javascript($params{page})!em)) {
        # no <body> tag, probably in preview mode
        $params{content}=include_javascript(undef).$params{content};
    }
    return $params{content};
}

sub include_javascript ($) {
    my $from=shift;
    
    return '<script src="'.urlto("ikiwiki/ikiwiki.js", $from).
        '" type="text/javascript" charset="utf-8"></script>'."\n".
        '<script src="'.urlto("ikiwiki/relativedate.js", $from).
        '" type="text/javascript" charset="utf-8"></script>';
}

sub mydisplaytime ($;$$) {
    my $time=shift;
    my $format=shift;
    my $pubdate=shift;

    # This needs to be in a form that can be parsed by javascript.
    # (Being fairly human readable is also nice, as it will be exposed
    # as the title if javascript is not available.)
    my $lc_time=POSIX::setlocale(&POSIX::LC_TIME);
    POSIX::setlocale(&POSIX::LC_TIME, "C");
    my $gmtime=decode_utf8(POSIX::strftime("%a, %d %b %Y %H:%M:%S %z",
            localtime($time)));
    POSIX::setlocale(&POSIX::LC_TIME, $lc_time);

    my $mid=' class="relativedate" title="'.$gmtime.'">'.
        IkiWiki::formattime($time, $format);

    if ($config{html5}) {
        return '<time datetime="'.IkiWiki::date_3339($time).'"'.
            ($pubdate ? ' pubdate="pubdate"' : '').$mid.'</time>';
    }
    else {
        return '<span'.$mid.'</span>';
    }
}

1