atom.php

<?php
// TODO:
// - reasonable permalinks
// - I18N?

$top_dir = ".";
require_once $top_dir.'/externals/global_params.php';

$content_type = filter_input(INPUT_GET, 'content-type', FILTER_SANITIZE_STRING);
if (!$content_type) {
    $contentType = "application/atom+xml";
}

$charset = "utf-8";
header("Content-Type: $contentType; charset=$charset");

$entry_count = 10;
$newsdir = "$top_dir/news";

/**
 * In php5, this is simply: date(DATE_ATOM, strtotime($news_date)).
 * php4 doesn't know what 'DATE_ATOM' is, and doesn't know what the 'P'
 * argument is ("+04:00"). The 'O' argument is supported and close ("+0400"),
 * but we need to insert the ':', as such...
 **/
function date_convert_news_to_atom($news_date)
{
    $DATE_ATOM_MOSTLY = "Y-m-d\TH:i:sO";
    $semi_atom_date = date($DATE_ATOM_MOSTLY, strtotime($news_date));
    $len = strlen($semi_atom_date);
    return substr($semi_atom_date, 0, $len-2) . ":" . substr($semi_atom_date, $len-2);
}
?>
<?="<?xml version=\"1.0\" encoding=\"$charset\"?>"?>
<?php
include("$newsdir/news-script.php");
?>

<feed xmlns="http://www.w3.org/2005/Atom">
    <title>GnuCash News</title>
    <subtitle><?=strip_tags($default_description)?></subtitle>
    <generator>GnuCash htdocs/master/atom.php 1.0 &lt;gnucash-devel@gnucash.org&gt;</generator>
    <logo><?=\DEFAULT_URL?>images/icons/gnc-icon.png</logo>
    <link rel="alternate" href="<?=\DEFAULT_URL?>" />
    <link rel="self" href="<?=\DEFAULT_URL?>atom.php" />
    <id><?=\DEFAULT_URL?></id>
    <?php
    $news_items = get_news($newsdir, $newsdir);
    $news_items = array_slice($news_items, 0, $entry_count);
    reset($news_items);
    $most_recent = file(key($news_items));
    $most_recent_update = chop($most_recent[1]);
    ?>
    <updated><?= date_convert_news_to_atom($most_recent_update) ?></updated>

    <?php for (reset($news_items); $key = key($news_items); next($news_items))
    {
        $fa = file($key);
        $n = count($fa);
        $title = strip_tags(chop($fa[0]));
        $update_date = chop($fa[1]);
        $summary = strip_tags(chop($fa[5]));
    ?>
        <entry>
            <id>urn:x-gnucash:news:<?= urlencode($key) ?></id>
            <title><?= $title ?></title>
            <summary><?= $summary ?></summary>
            <content type="application/xhtml+html" src="<?=\DEFAULT_URL?>news.phtml#n-<?=generate_anchor($key);?>"/>
                <link rel="alternate" href="<?=\DEFAULT_URL?>news.phtml#n-<?=generate_anchor($key);?>" />
            <author>
                <name>GnuCash Developers</name>
                <email>gnucash-devel@gnucash.org</email>
            </author>
            <updated><?= date_convert_news_to_atom($update_date) ?></updated>
  </entry>
  <?php
  } ?>

</feed>