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-rw-r--r--lisp/mastodon-media.el25
1 files changed, 21 insertions, 4 deletions
diff --git a/lisp/mastodon-media.el b/lisp/mastodon-media.el
index 1b6d054..808a23d 100644
--- a/lisp/mastodon-media.el
+++ b/lisp/mastodon-media.el
@@ -51,6 +51,11 @@
:group 'mastodon-media
:type 'integer)
+(defcustom mastodon-media--enable-image-caching nil
+ "Whether images should be cached."
+ :group 'mastodon-media
+ :type 'boolean)
+
(defvar mastodon-media--generic-avatar-data
(base64-decode-string
"iVBORw0KGgoAAAANSUhEUgAAAGQAAABkCAIAAAD/gAIDAAAACXBIWXMAAAsTAAALEwEAmpwYAAAA
@@ -130,7 +135,7 @@ fKRJkmVZjAQwh78A6vCRWJE8K+8AAAAASUVORK5CYII=")
"The PNG data for a generic 200x200 'broken image' view.")
(defun mastodon-media--process-image-response
- (status-plist marker image-options region-length)
+ (status-plist marker image-options region-length url)
"Callback function processing the url retrieve response for URL.
STATUS-PLIST is the usual plist of status events as per `url-retrieve'.
@@ -151,6 +156,9 @@ REGION-LENGTH is the length of the region that should be replaced with the image
(when image-options 'imagemagick)
nil) ; inbuilt scaling in 27.1
t image-options))))
+ (when mastodon-media--enable-image-caching
+ (unless (url-is-cached url) ; cache if not already cached
+ (url-store-in-cache url-buffer)))
(with-current-buffer (marker-buffer marker)
;; Save narrowing in our buffer
(let ((inhibit-read-only t))
@@ -189,9 +197,18 @@ REGION-LENGTH is the range from start to propertize."
(condition-case nil
;; catch any errors in url-retrieve so as to not abort
;; whatever called us
- (url-retrieve url
- #'mastodon-media--process-image-response
- (list marker image-options region-length))
+ (if (and mastodon-media--enable-image-caching
+ (url-is-cached url))
+ ;; if image url is cached, decompress and use it
+ (with-current-buffer (url-fetch-from-cache url)
+ (set-buffer-multibyte nil)
+ (goto-char (point-min))
+ (zlib-decompress-region (goto-char (search-forward "\n\n")) (point-max))
+ (mastodon-media--process-image-response nil marker image-options region-length url))
+ ;; else fetch as usual and process-image-response will cache it
+ (url-retrieve url
+ #'mastodon-media--process-image-response
+ (list marker image-options region-length url)))
(error (with-current-buffer buffer
;; TODO: Consider adding retries
(put-text-property marker