Hi,
I did find a post about this from around 2009 but I'm not sure it went
anywhere. It's very useful for me to be able to export a single html
file that I can distribute around. Base 64 encoding images directly in
to the exported html makes this possible.
The feature seems fairly well supported by browsers these days.[1]
I've hacked up this ugly proof of concept. I guess it wouldn't take too
much to productionize this and make the behavior configurable. Any
thoughts?
--8<---------------cut here---------------start------------->8---
(defun gs/b64-img (file-uri)
(let ((file (s-replace "file://" "" file-uri)))
(if (f-exists? file)
;; src="data:image/png;base64,iVBORw0KGgoAAAANSUh..."
(s-concat "data:image/"
(f-ext file)
";base64,"
(base64-encode-string (f-read-bytes file)))
file-uri)))
(defun org-html--format-image (source attributes info)
"Return \"img\" tag with given SOURCE and ATTRIBUTES.
SOURCE is a string specifying the location of the image.
ATTRIBUTES is a plist, as returned by
`org-export-read-attribute'. INFO is a plist used as
a communication channel."
(org-html-close-tag
"img"
(org-html--make-attribute-string
(org-combine-plists
(list :src (gs/b64-img source) ; <-- interesting line is here
:alt (if (string-match-p "^ltxpng/" source)
(org-html-encode-plain-text
(org-find-text-property-in-string 'org-latex-src source))
(file-name-nondirectory source)))
attributes))
info))
--8<---------------cut here---------------end--------------->8---
[1]: http://stackoverflow.com/questions/1207190/embedding-base64-images
--
Greg
Amazon Development Centre (London) Ltd. Registered in England and Wales with
registration number 04543232 and which has its registered office at Leadenhall
Court, One Leadenhall Street, London EC3V 1PP, United Kingdom.
