Web on Lorenzo Bolla

org-based lbolla.info

Thu, 04 Jan 2018 00:00:00 +0000

I use org-mode daily for all sorts of tasks:

TODO list
Keeping tracks of meetings, events, etc.
Note taking
Presentations

It was annoying to have to switch to another markdown language for blogging. So, I looked into org-publish for a simple, no-frills way to write .org files and convert them to .html.

My org-publish-project-alist now contains these entries:

("lbolla.info"
 :components ("lbolla.info-html" "lbolla.info-static" "lbolla.info-cv"))
("lbolla.info-static"
 :base-directory "~/src/lbolla.info/static/"
 :base-extension "png\\|jpg\\|\\|gif\\|gz\\|css"
 :publishing-directory "~/src/lbolla.info/html/"
 :recursive t
 :publishing-function org-publish-attachment)
("lbolla.info-cv"
 :base-directory "~/src/lbolla.info/org/"
 :exclude "\\.*"
 :include ("cv.org")
 :publishing-directory "~/src/lbolla.info/html/"
 :publishing-function org-latex-publish-to-pdf)
("lbolla.info-html"
 :base-directory "~/src/lbolla.info/org/"
 :publishing-directory "~/src/lbolla.info/html/"
 :recursive t
 :section-numbers nil
 :auto-sitemap t
 :sitemap-format-entry lbolla.info/org-publish-sitemap-format-entry
 :sitemap-function lbolla.info/org-publish-sitemap-function
 :sitemap-sort-files anti-chronologically
 :sitemap-style tree
 :sitemap-title "Sitemap"
 :with-toc nil
 :html-doctype "html5"
 :html-head-include-default-style nil
 :html-head-include-scripts nil
 :html-link-home "<ignored>"
 :html-link-up "<ignored>"
 :html-home/up-format "<div id=\"org-div-home-and-up\"><a accesskey=\"h\" href=\"/\">Home</a> | <a accesskey=\"a\" href=\"/articles\">Articles</a> | <a accesskey=\"c\" href=\"/cv\">CV</a> (<a href=\"/cv.pdf\">pdf</a>)</div>"
 :html-preamble lbolla.info/html-preamble
 :html-postamble nil
 :html-head "<link rel=\"stylesheet\" href=\"./css/org.css\" type=\"text/css\">"
 :html-head-extra "<link rel=\"stylesheet\" href=\"./css/extra.css\" type=\"text/css\">"
 :publishing-function org-html-publish-to-html)

Style is this one: some CSS rules made for org-generated HTML files.

lbolla.info is using HTTPS

Fri, 04 Dec 2015 00:00:00 +0000

Today I have enabled https on this website. I am using certificates issued by Let's Encrypt, which is a new free, automated and open certificate authority.

To manage the certificates, I am using simp\le, a simple command line client to issue and renew certificates using Let's Encrypt API.

All working fine, so far!

Simple Wordpress API lisp client

Wed, 04 Aug 2010 00:00:00 +0000

I like old things, therefore I started to learn Lisp.

There isn't a better way to learn than by doing, so I tried to implement a client for the wordpress api. the result, even if not complete yet, it's so elegant that I'd like to share it.

(require 's-xml-rpc)

(defpackage :wp
 (:use :cl :cl-user :s-xml-rpc))

(in-package :wp)

(defparameter +interfaces+
 '((get-blogs "wp.getUsersBlogs" username password)
 (get-tags "wp.getTags" blog-id username password)
 (get-comment-count "wp.getCommentCount" blog-id username password post-id)
 (get-post-status-list "wp.getPostStatusList" blog-id username password)
 (get-page-status-list "wp.getPageStatusList" blog-id username password)
 (get-page-templates "wp.getPageTemplates" blog-id username password)
 (get-options "wp.getOptions" blog-id username password)
 (delete-comment "wp.deleteComment" blog-id username password comment-id)
 (get-comment-status-list "wp.getCommentStatusList" blog-id username password)
 (get-page "wp.getPage" blog-id page-id username password)
 (get-pages "wp.getPages" blog-id username password)
 (get-page-list "wp.getPageList" blog-id username password)
 (delete-page "wp.deletePage" blog-id username password page-id)
 (get-authors "wp.getAuthors" blog-id username password)
 (get-categories "wp.getCategories" blog-id username password)
 (delete-category "wp.deleteCategory" blog-id username password category-id)
 (suggest-categories "wp.suggestCategories" blog-id username password category max-results)
 (get-comment "wp.getComment" blog-id username password comment-id))
 "Interface definition to WP services")

(defun defunwp (params)
 (destructuring-bind (name service &rest rest) params
 (setf (fdefinition name) (compile nil `(lambda (host ,@rest &optional (url "/xmlrpc.php"))
 (block ,name
 (xml-rpc-call
 (encode-xml-rpc-call ,service ,@rest)
 :host host
 :url url)))))
 name))

(mapcar #'(lambda (interface) (export (defunwp interface))) +interfaces+)

It uses the s-xml-rpc package and I've tested it with SBCL.

wordpress.com and text based web browsers

Sat, 31 Jan 2009 00:00:00 +0000

Today, I was appreciating how well wordpress.com renders on text based web browsers (using elinks). Unfortunately, even if reading posts looks great, posting does not. Actually, I've been able to delete one of my posts, while searching to edit it. Completely wiped out.

Luckily, google cache saved my time and promptly found an older copy. Beware!

Command line HTML validator

Fri, 30 Jan 2009 00:00:00 +0000

Valid HTML is something we should strive to achieve. W3C Validator is an invaluable tool to do just that. Unfortunately, validating a local file you are working on can be annoying after the 100th time you've uploaded it to the W3C website.

Here you can find a command line HTML validator that simply uploads anything passed to it from stdin to the W3C Validator. The basic syntax is:

$> python validate.py < file_to_validate.html

It requires html2text to print the detailed list of errors.

Trackback

Mon, 10 Sep 2007 00:00:00 +0000

Today, I discovered a new cool feature of blogs: trackbacks!

This is a test, to see if I got it right…

Here is a clear explanation of trackbacks.