From dc7f600ac7802a0c0241a054ff84e256db8c6c59 Mon Sep 17 00:00:00 2001
From: Jasmine Amalia <jasm1nii@proton.me>
Date: Tue, 17 Oct 2023 21:13:20 +0700
Subject: [PATCH] Add files via upload

---
 feed_generator.php | 109 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 109 insertions(+)
 create mode 100644 feed_generator.php

diff --git a/feed_generator.php b/feed_generator.php
new file mode 100644
index 0000000..3438bea
--- /dev/null
+++ b/feed_generator.php
@@ -0,0 +1,109 @@
+<?php
+    // work in progress!!
+
+    // create beginning of feed template.
+    // reference for required elements: https://validator.w3.org/feed/docs/atom.html
+    ob_start();
+    date_default_timezone_set("Asia/Jakarta");
+
+    echo    '<?xml version="1.0" encoding="utf-8"?>'
+            .'<feed xmlns="http://www.w3.org/2005/Atom">'
+            // optionally specify feed generator for debugging purposes.
+            .'<generator version="1.0">jasmine&apos;s PHP feed generator!! | last modified by system at ' . strtoupper(date("h:i:sa")) . ' (GMT+7)</generator>'
+            .'<title>jasmine&apos;s b(rain)log | jasm1nii.xyz</title>'
+            .'<subtitle>blog articles by jasmine</subtitle>'
+            .'<id>https://jasm1nii.xyz/blog/articles</id>';
+    echo    '<link rel="self" href="https://jasm1nii.xyz/blog/articles/articles.xml" type="application/atom+xml"/>';
+    echo    '<link rel="alternate" href="https://jasm1nii.xyz/blog/articles" type="text/html"/>';
+
+    // define path to fetch pages from.
+    $root = dirname(__DIR__, 2);
+    $blog = $root.'/blog/articles';
+
+    // force libxml to parse all HTML elements, including HTML 5. by default, the extension can only read valid HTML 4.
+    libxml_use_internal_errors(true);
+    
+    // match feed update time with the newest entry.
+    // i'm personally not using the system modification time to avoid sending uneccessary notifications to feed readers.
+    $article_list = glob($blog.'/*/*/*/*.html');
+    $first_article = array_pop($article_list);
+    $first_article_content = file_get_contents($first_article);
+    $first_article_dom = new DOMDocument;
+    $first_article_dom->loadHTML($first_article_content);
+    $feed_updated = $first_article_dom->getElementsByTagName('time');
+    foreach ($feed_updated as $feed_updated_text) {
+        echo    '<updated>' . $feed_updated_text->getAttribute('datetime') . 'T00:00:00+07:00</updated>';
+    }
+
+    // rest of the template.
+    echo    '<author>'
+            .'<name>jasmine</name>'
+            .'<email>contact@jasm1nii.xyz</email>'
+            .'<uri>https://jasm1nii.xyz/</uri>'
+            .'</author>'
+            .'<icon>https://jasm1nii.xyz/assets/media/itchio-textless-white.svg</icon>'
+            .'<logo>https://jasm1nii.xyz/assets/media/main/07042023-me_compressed.webp</logo>';
+
+    // output entries.
+    $i = 0;
+    foreach (array_reverse(glob($blog.'/*/*/*/*.html')) as $article) {
+        $article_content = file_get_contents($article);
+        $article_dom = new DOMDocument;
+        $article_dom->loadHTML($article_content);
+
+        echo    '<entry>';
+
+        // title
+        $title = $article_dom->getElementsByTagName('h2');
+        foreach ($title as $title_text) {
+            echo    '<title>'.$title_text->nodeValue.'</title>';
+        }
+
+        // id
+        echo    '<id>https://jasm1nii.xyz/blog/articles/' . ltrim($article, $blog) . '</id>';
+
+        // alternate link
+        echo    '<link rel="alternate" type="text/html" href="https://jasm1nii.xyz/blog/articles/' . ltrim($article, $blog) . '"/>';
+
+        $updated = $article_dom->getElementsByTagName('time');
+        $t = 0;
+        foreach ($updated as $updated_text) {
+            echo    '<updated>' . $updated_text->getAttribute('datetime') . 'T00:00:00+07:00</updated>';
+            if(++$t > 0) break;
+        }
+
+        // summary
+        $x = new DOMXPath($article_dom);
+        $summary_class = 'p-summary';
+        $summary = $x->query("//*[@class='" . $summary_class . "']");
+        if ($summary->length > 0) {
+            echo    '<summary type="html">';
+            echo    $summary->item(0)->nodeValue;
+            echo    '</summary>';
+        }
+
+        // content
+        // HTML entities must be escaped - note that XML only defines five of them.
+        // reference: https://en.wikipedia.org/wiki/List_of_XML_and_HTML_character_entity_references
+        $content_class = 'e-content';
+        $content = $x->query("//*[@class='" . $content_class . "']");
+        if ($content->length > 0) {
+            echo    '<content type="html">' . preg_replace('/\s\s+/', ' ',(substr($content->item(0)->nodeValue,0,500))) . '... (&lt;a href="https://jasm1nii.xyz/blog/articles/' . ltrim($article, $blog) . '"&gt;read more&lt;/a&gt;)' . '</content>';
+        } else {
+            // fallback for older markup
+            $content_class = 'entry';
+            $content = $x->query("//*[@class='" . $content_class . "']");
+            if ($content->length >= 0) {
+                echo    '<content type="html">' . 'whoops - this page contains markup that can&apos;t be parsed for feed-reader friendliness. read more on the website!' . '</content>';
+            }
+        }
+
+        echo    '</entry>';
+        if(++$i > 9) break;
+    }
+    echo '</feed>';
+
+    $xml_str = ob_get_contents();
+    ob_end_clean();
+    file_put_contents($blog.'/articles.xml', $xml_str);
+?>
\ No newline at end of file