diff options
Diffstat (limited to 'elisp/geiser-repl.el')
| -rw-r--r-- | elisp/geiser-repl.el | 78 |
1 files changed, 43 insertions, 35 deletions
diff --git a/elisp/geiser-repl.el b/elisp/geiser-repl.el index 358359e..704a7fb 100644 --- a/elisp/geiser-repl.el +++ b/elisp/geiser-repl.el @@ -124,6 +124,11 @@ If you have a slow system, try to increase this time." :type 'string :group 'geiser-repl) +(geiser-custom--defcustom geiser-image-cache-keep-last 10 + "How many images to keep in geiser's image cache." + :type 'integer + :group 'geiser-repl) + (geiser-custom--defface repl-input 'comint-highlight-input geiser-repl "evaluated input highlighting") @@ -277,8 +282,27 @@ module command as a string") (geiser-repl--host) (geiser-repl--port))))) -(defvar geiser-repl--last-image nil) -(defvar geiser-repl--last-image-filename nil) +(defvar geiser-image-cache-dir nil) +;; XXX make this a parameter from Racket... + +(defun geiser-repl--list-image-cache () + "List all the images in the image cache." + (and geiser-image-cache-dir + (file-directory-p geiser-image-cache-dir) + (let ((files (directory-files-and-attributes + geiser-image-cache-dir t "geiser-img-[0-9]*.png"))) + (mapcar 'car + (sort files '(lambda (a b) + (< (float-time (nth 6 a)) + (float-time (nth 6 b))))))))) + +(defun geiser-repl--clean-image-cache () + "Clean all except for the last `geiser-image-cache-keep-last' +images in 'geiser-image-cache-dir'." + (interactive) + (dolist (file (butlast (geiser-repl--list-image-cache) + geiser-image-cache-keep-last)) + (delete-file file))) (defun geiser-repl--replace-images () "Replace all image patterns with actual images" @@ -290,44 +314,28 @@ module command as a string") ;; not display it before it gets deleted (race condition) (let* ((file (match-string 1)) (begin (match-beginning 0)) - (end (match-end 0)) - (imgdata (save-excursion - (with-temp-buffer - (set-buffer-multibyte nil) - (insert-file-contents-literally file nil) - (buffer-string))))) + (end (match-end 0))) (delete-region begin end) (if (and geiser-repl-inline-images (display-images-p)) - (put-image (create-image imgdata nil t) begin "[image]") + (put-image (create-image file) begin "[image]") (progn (goto-char begin) (insert "[image] ; use M-x geiser-view-last-image to view"))) - (delete-file file) - ; XXX need to ensure that the file is in the temporary - ; folder before deleting it. Racket will only generate files - ; in the system temporary folder (/var/tmp), but we don't - ; know what the temp. folder is, especially on Windows - (setq geiser-repl--last-image imgdata) - ))))) - -(defun geiser-view-last-image () - "Open the last displayed image in the system's image viewer" - (interactive) - (when geiser-repl--last-image - (setq geiser-repl--last-image-filename - (make-temp-file "geiser-image" nil ".png")) - (let ((imgdata geiser-repl--last-image)) - (with-temp-file geiser-repl--last-image-filename - (set-buffer-multibyte nil) - (insert imgdata)) - (let* ((proc (start-process "Geiser image view" - nil - geiser-system-image-viewer - geiser-repl--last-image-filename))) - (set-process-sentinel proc - '(lambda (proc evt) - (message "Deleting file %s" geiser-repl--last-image-filename) - (delete-file geiser-repl--last-image-filename))))))) + (setq geiser-image-cache-dir (file-name-directory file)) + (geiser-repl--clean-image-cache)))))) + +(defun geiser-view-last-image (n) + "Open the last displayed image in the system's image viewer. + +With prefix arg, open the N-th last shown image in the system's image viewer." + (interactive "p") + (let ((images (reverse (geiser-repl--list-image-cache)))) + (if (>= (length images) n) + (start-process "Geiser image view" + nil + geiser-system-image-viewer + (nth (- n 1) images)) + (error "There aren't %d recent images" n)))) (defun geiser-repl--output-filter (txt) (geiser-con--connection-update-debugging geiser-repl--connection txt) |