1 files changed, 66 insertions, 0 deletions
diff --git a/org/blog/generate-feed.scm b/org/blog/generate-feed.scm
new file mode 100755
index 0000000..8519f0c
--- /dev/null
+++ b/org/blog/generate-feed.scm
@@ -0,0 +1,66 @@
+#! /usr/bin/guile \
+-e main -s
+!#
+
+(use-modules (sxml simple))
+
+(define site-url "https://shittyweb.org")
+
+;; Generate description from article file
+(define (get-description file)
+  (call-with-input-file file
+    (lambda (fp)
+      (letrec ((read-characters
+                (lambda (fp)
+                  (let ((character (read-char fp)))
+                    (unless (eof-object? character)
+                      (display character)
+                      (read-characters fp))))))
+        (display "<![CDATA[\n")
+        (read-characters fp)
+        (display "]]>\n")))))
+
+;; Generate rss item
+(define (make-item article)
+  (let ((title (cadr (list-ref article 0)))
+        (name (cadr (list-ref article 2)))
+        (pub-date (cadr (list-ref article 4)))
+        (file (cadr (list-ref article 6))))
+    (format #t "\n    <item>\n\
+        <title>~a</title>\n\
+        <link>~a/blog#~a</link>\n\
+        <pubDate>~a</pubDate>\n\
+        <description>\n" title site-url name pub-date)
+    (get-description file)
+    (display "        </description>\n")
+    (display "    </item>\n")))
+    
+;; Generate rss feed
+(define (generate-feed)
+  ;; Display the rss header
+  (format #t "<?xml version=\"1.0\" encoding=\"UTF-8\" ?>\n\
+<rss version=\"2.0\">\n\
+  <channel>\n\
+    <title>Nathan's shitty blog</title>\n\
+    <description>The coffee powered blog of chaos</description>\n\
+    <link>~a</link>\n\
+    <image>\n\
+      <url>~a/images/icon.png</url>\n\
+      <title>Nathan's shitty blog</title>\n\
+      <link>~a/blog</link>\n\
+    </image>\n" site-url site-url site-url)
+
+  (call-with-input-file "articles.xml"
+    (lambda (fp)
+      (let ((articles (xml->sxml fp)))
+        (for-each (lambda (article)
+                    (if (list? article)
+                      (make-item (cddr article))))
+                  (cdr (cadr articles))))))
+
+  (display "  </channel>\n")
+  (display "</rss>\n"))
+
+(define (main args)
+  (generate-feed))
+