Update the way the blog is generated

Instead of using a dynamic block to generate the index, use a sitemap function.

1 files changed, 121 insertions, 0 deletions

diff --git a/publish.el b/publish.el
new file mode 100644
index 0000000..652f064
--- /dev/null
+++ b/publish.el
@@ -0,0 +1,121 @@
+;;; publish.el --- Publishing configuration for ryuslash.org  -*- lexical-binding: t; -*-
+
+;; Copyright (C) 2020  Tom Willemse
+
+;; Author: Tom Willemse <tom@ryuslash.org>
+;; Keywords:
+
+;; This program is free software; you can redistribute it and/or modify
+;; it under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+
+;; This program is distributed in the hope that it will be useful,
+;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+;; GNU General Public License for more details.
+
+;; You should have received a copy of the GNU General Public License
+;; along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+;;; Commentary:
+
+;;
+
+;;; Code:
+
+(require 'ox-publish)
+(require 'ox-rss)
+(require 'subr-x)
+
+(defun publish-calculate-reading-time (buffer)
+  "Calculate the amount of minutes it would take to read the contents of BUFFER."
+  (with-current-buffer buffer
+    (max 1 (/ (count-words (point-min) (point-max)) 228))))
+
+(defun publish-format-reading-time (time)
+  "Return a string describing TIME."
+  (format "%d minute%s"
+          time
+          (if (= time 1) "" "s")))
+
+(defun publish-org-sitemap (title list)
+  "Create a site map file. TITLE is used as the title, LIST is turned into a subtree."
+  (concat "#+TITLE: " title "\n"
+          "#+OPTIONS: toc:nil num:nil\n\n"
+          ;; (message "Lets see here: %S" list)
+          (org-list-to-subtree list)))
+
+(defun publish-org-sitemap-format-entry (entry style project)
+  "Format ENTRY as a healine.
+STYLE is ignored and PROJECT is passed on directly to related functions."
+  (unless (directory-name-p entry)
+    (format "%s\n  :PROPERTIES:\n  :ID: %s\n  :RSS_PERMALINK: %s\n  :PUBDATE: %s\n  :END:\n  %s\n  Published on: %s\n\n  [[file:%s][Read More]] (%s)"
+            (org-publish-find-title entry project)
+            entry
+            (concat (string-remove-suffix ".org" entry) ".html")
+            (format-time-string
+             (cdr org-time-stamp-formats)
+             (org-publish-find-date entry project))
+
+            (with-temp-buffer
+              (insert-file-contents (concat (plist-get (cdr project) :base-directory) "/" entry))
+              (goto-char (point-min))
+              (let ((current-element (org-element-at-point)))
+                (while (not (equal (org-element-type current-element) 'paragraph))
+                  (org-forward-element)
+                  (setq current-element (org-element-at-point)))
+                (buffer-substring-no-properties
+                 (plist-get (cadr current-element) :contents-begin)
+                 (plist-get (cadr current-element) :contents-end))))
+            (format-time-string
+             (cdr org-time-stamp-formats)
+             (org-publish-find-date entry project))
+            entry
+            (with-temp-buffer
+              (insert-file-contents (concat (plist-get (cdr project) :base-directory) "/" entry))
+              (publish-format-reading-time
+               (publish-calculate-reading-time (current-buffer)))))))
+
+(setq org-rss-use-entry-url-as-guid t)
+
+(setq org-export-exclude-tags '("noexport" "draft"))
+
+(setq org-publish-project-alist
+      '(("posts"
+         :base-directory "posts/"
+         :base-extension "org"
+         :publishing-directory "public/"
+         :recursive t
+         :publishing-function org-html-publish-to-html
+         :html-head "<link rel=\"stylesheet\" href=\"assets/css/main.css\" type=\"text/css\"/>"
+         :html-preamble (lambda (project)
+                          (let ((buffer (find-file-noselect (buffer-file-name))))
+                            (unless (string= "ryuslash.org"
+                                             (car (org-publish-find-property (buffer-file-name) :title project)))
+                              (publish-format-reading-time
+                               (publish-calculate-reading-time buffer)))))
+         :auto-sitemap t
+         :sitemap-filename "index.org"
+         :sitemap-title "ryuslash.org"
+         :sitemap-format-entry publish-org-sitemap-format-entry
+         :sitemap-style list
+         :sitemap-function publish-org-sitemap
+         :sitemap-sort-files anti-chronologically)
+        ("rss"
+         :base-directory "posts/"
+         :base-extension "org"
+         :html-link-home "https://ryuslash.org/"
+         :rss-link-home "https://ryuslash.org/"
+         :html-link-use-abs-url t
+         :rss-extension "xml"
+         :publishing-directory "public"
+         :publishing-function (org-rss-publish-to-rss)
+         :section-number nil
+         :exclude ".*"
+         :include ("index.org")
+         :table-of-contents nil)
+        ("all" :components ("posts" "rss"))))
+
+(provide 'publish)
+;;; publish.el ends here