add variables, fallback for timestamps
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@ -1,52 +1,91 @@
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<?php
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// work in progress!!
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// GENERAL SETTINGS -------------------------------------------------------------------
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// the timezone referenced by the system for automatic timestamping.
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// suported timezones: https://www.php.net/manual/en/timezones.php
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$timezone = 'Asia/Jakarta';
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// FEED METADATA //////////////////////////////////////////////////////////////////////
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// certain characters must be escaped as HTML entities - note that XML only accepts five of them.
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// reference: https://en.wikipedia.org/wiki/List_of_XML_and_HTML_character_entity_references
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$feed_title = 'jasmine's b(rain)log | jasm1nii.xyz';
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$feed_subtitle = 'blog articles by jasmine';
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$blog_url = 'https://jasm1nii.xyz/blog/articles';
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$feed_url = 'https://jasm1nii.xyz/blog/articles/articles.xml';
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$author_name = 'jasmine';
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$author_email = 'contact@jasm1nii.xyz';
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$author_homepage = 'https://jasm1nii.xyz/';
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$feed_icon = 'https://jasm1nii.xyz/assets/media/itchio-textless-white.svg';
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$feed_logo = 'https://jasm1nii.xyz/assets/media/main/07042023-me_compressed.webp';
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// PATH TO FETCH PAGES FROM ///////////////////////////////////////////////////////////
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// __DIR__ is the directory where *this script* is located.
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// in my case, i first need to go up two directories to get to the site root.
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$site_root = dirname(__DIR__, 2);
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// once i'm there, i specify the parent directory where i keep all of my blog pages.
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$blog_root = $site_root.'/blog/articles';
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// then i specify a pattern that matches the path of each individual page.
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// my setup is /YYYY/MM/DD/entry.html
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$blog_entries = $blog_root.'/*/*/*/*.html';
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// ------------------------------------------------------------------------------------
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// create beginning of feed template.
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// reference for required elements: https://validator.w3.org/feed/docs/atom.html
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ob_start();
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date_default_timezone_set("Asia/Jakarta");
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date_default_timezone_set($timezone);
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echo '<?xml version="1.0" encoding="utf-8"?>'
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.'<feed xmlns="http://www.w3.org/2005/Atom">'
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// optionally specify feed generator for debugging purposes.
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.'<generator version="1.0">jasmine's PHP feed generator!! | last modified by system at ' . strtoupper(date("h:i:sa")) . ' (GMT+7)</generator>'
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.'<title>jasmine's b(rain)log | jasm1nii.xyz</title>'
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.'<subtitle>blog articles by jasmine</subtitle>'
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.'<id>https://jasm1nii.xyz/blog/articles</id>';
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echo '<link rel="self" href="https://jasm1nii.xyz/blog/articles/articles.xml" type="application/atom+xml"/>';
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echo '<link rel="alternate" href="https://jasm1nii.xyz/blog/articles" type="text/html"/>';
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// define path to fetch pages from.
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$root = dirname(__DIR__, 2);
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$blog = $root.'/blog/articles';
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.'<generator uri="https://github.com/jasm1nii/xml-feed-generator" version="1.1">PHP feed generator by jasm1nii.xyz | last modified by the system at ' . strtoupper(date("h:i:sa")) . ' (GMT' . date('P') . ')</generator>'
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.'<title>' . $feed_title . '</title>'
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.'<subtitle>' . $feed_subtitle . '</subtitle>'
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.'<id>' . $blog_url . '</id>'
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.'<link rel="self" href="'. $feed_url .'" type="application/atom+xml"/>'
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.'<link rel="alternate" href="' . $blog_url .'" type="text/html"/>';
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// force libxml to parse all HTML elements, including HTML 5. by default, the extension can only read valid HTML 4.
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libxml_use_internal_errors(true);
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// match feed update time with the newest entry.
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// i'm personally not using the system modification time to avoid sending uneccessary notifications to feed readers.
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$article_list = glob($blog.'/*/*/*/*.html');
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$article_list = glob($blog_entries);
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$first_article = array_pop($article_list);
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$first_article_content = file_get_contents($first_article);
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$first_article_dom = new DOMDocument;
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$first_article_dom->loadHTML($first_article_content);
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$feed_updated = $first_article_dom->getElementsByTagName('time');
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$f = 0;
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foreach ($feed_updated as $feed_updated_text) {
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echo '<updated>' . $feed_updated_text->getAttribute('datetime') . 'T00:00:00+07:00</updated>';
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$feed_datetime = $feed_updated_text->getAttribute('datetime');
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if (strlen($feed_datetime) == 10) {
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echo '<updated>' . $feed_datetime . 'T00:00:00' . date('P') .'</updated>';
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}
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elseif (strlen($feed_datetime) == 25 || strlen($feed_datetime) == 20) {
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echo '<updated>' . $feed_datetime .'</updated>';
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}
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if(++$f > 0) break;
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}
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// if no RFC 3339 timestamp is found, use the file creation date.
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if (empty($feed_updated)) {
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$first_article_created = filectime($first_article);
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echo '<updated>' . date(DATE_ATOM, $first_article_created) . '</updated>';
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}
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// rest of the template.
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echo '<author>'
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.'<name>jasmine</name>'
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.'<email>contact@jasm1nii.xyz</email>'
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.'<uri>https://jasm1nii.xyz/</uri>'
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.'<name>' . $author_name . '</name>'
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.'<email>' . $author_email . '</email>'
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.'<uri>' . $author_homepage . '</uri>'
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.'</author>'
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.'<icon>https://jasm1nii.xyz/assets/media/itchio-textless-white.svg</icon>'
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.'<logo>https://jasm1nii.xyz/assets/media/main/07042023-me_compressed.webp</logo>';
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.'<icon>' . $feed_icon . '</icon>'
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.'<logo>' . $feed_logo . '</logo>';
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// output entries.
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$i = 0;
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foreach (array_reverse(glob($blog.'/*/*/*/*.html')) as $article) {
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foreach (array_reverse(glob($blog_entries)) as $article) {
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$article_content = file_get_contents($article);
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$article_dom = new DOMDocument;
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$article_dom->loadHTML($article_content);
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}
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// id
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echo '<id>https://jasm1nii.xyz/blog/articles/' . ltrim($article, $blog) . '</id>';
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echo '<id>https://jasm1nii.xyz/blog/articles/' . ltrim($article, $blog_root) . '</id>';
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// alternate link
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echo '<link rel="alternate" type="text/html" href="https://jasm1nii.xyz/blog/articles/' . ltrim($article, $blog) . '"/>';
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echo '<link rel="alternate" type="text/html" href="https://jasm1nii.xyz/blog/articles/' . ltrim($article, $blog_root) . '"/>';
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$updated = $article_dom->getElementsByTagName('time');
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$t = 0;
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$a = 0;
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foreach ($updated as $updated_text) {
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echo '<updated>' . $updated_text->getAttribute('datetime') . 'T00:00:00+07:00</updated>';
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if(++$t > 0) break;
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$timestamp = $updated_text->getAttribute('datetime');
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if (strlen($timestamp) == 10) {
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echo '<updated>' . $timestamp . 'T00:00:00' . date('P'). '</updated>';
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}
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elseif (strlen($timestamp) == 25 || strlen($timestamp) == 20) {
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echo '<updated>' . $timestamp .'</updated>';
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}
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if(++$a > 0) break;
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}
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// if no RFC 3339 timestamp is found, use the file creation date.
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if (empty($updated)) {
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$article_created = filectime($article);
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echo '<updated>' . date(DATE_ATOM, $article_created) . '</updated>';
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}
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// summary
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@ -83,12 +133,11 @@
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}
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// content
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// HTML entities must be escaped - note that XML only defines five of them.
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// reference: https://en.wikipedia.org/wiki/List_of_XML_and_HTML_character_entity_references
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$content_class = 'e-content';
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$content = $x->query("//*[@class='" . $content_class . "']");
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if ($content->length > 0) {
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echo '<content type="html">' . preg_replace('/\s\s+/', ' ',(substr($content->item(0)->nodeValue,0,500))) . '... (<a href="https://jasm1nii.xyz/blog/articles/' . ltrim($article, $blog) . '">read more</a>)' . '</content>';
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// strip line breaks and output a maximum of 500 characters.
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echo '<content type="html">' . preg_replace('/\s\s+/', ' ',(substr($content->item(0)->nodeValue,0,500))) . '... (<a href="https://jasm1nii.xyz/blog/articles/' . ltrim($article, $blog_root) . '">read more</a>)' . '</content>';
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} else {
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// fallback for older markup
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$content_class = 'entry';
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}
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echo '</entry>';
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// add no more than 10 entries.
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if(++$i > 9) break;
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}
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echo '</feed>';
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$xml_str = ob_get_contents();
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ob_end_clean();
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file_put_contents($blog.'/articles.xml', $xml_str);
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file_put_contents($blog_root.'/articles.xml', $xml_str);
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?>
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