X-Git-Url: https://thelambdalab.xyz/gitweb/index.cgi?a=blobdiff_plain;f=sixel.el;h=5448ab4008087cf75bc4e6e91b18df53d170afcd;hb=9dba2f344047e702b78a0eb4f90f3dcdda7bfa01;hp=053739d300c36026541775c1539844050c9544a0;hpb=e3bfe837fe1c04c4319ebb57d70bd641f7906829;p=sixel.git

diff --git a/sixel.el b/sixel.el
index 053739d..5448ab4 100644
--- a/sixel.el
+++ b/sixel.el
@@ -5,7 +5,7 @@
 ;; Author: Tim Vaughan <tgvaughan@gmail.com>
 ;; Created: 19 May 2019
 ;; Version: 1.0.0
-;; Keywords: 
+;; Keywords:
 ;; Homepage: https://github.com/tgvaughan/sixel
 ;; Package-Requires: ((emacs "25"))
 
@@ -115,23 +115,22 @@ Returns a sixel image object."
   sixel-image)
 
 (defun sixel-image-colour-map (sixel-image)
-  "Extract colour map from SIXEL-DATA."
+  "Extract colour map from SIXEL-IMAGE."
   (car sixel-image))
 
 (defun sixel-image-sixels (sixel-image)
-  "Extract sixels from SIXEL-DATA."
+  "Extract sixels from SIXEL-IMAGE."
   (cdr sixel-image))
 
 (defun sixel-image-dims (sixel-image)
-  "Computes image width from SIXEL-DATA. Returns pair (width . height)."
+  "Compute image width from SIXEL-IMAGE.  Return pair (width . height)."
   (let ((sixels (sixel-image-sixels sixel-image)))
     (cons
      (apply #'max (mapcar (lambda (row) (length row)) sixels))
      (* 6 (length sixels)))))
 
 (defun sixel-image-to-xpm-values (sixel-image)
-  "Produce string representing parameter values component of XPM
-representation of SIXEL-IMAGE."
+  "Produce parameter values component of XPM representation of SIXEL-IMAGE."
   (let* ((dims (sixel-image-dims sixel-image))
          (colour-map (sixel-image-colour-map sixel-image))
          (n-colours (1+ (length colour-map))))
@@ -141,8 +140,7 @@ representation of SIXEL-IMAGE."
             (number-to-string n-colours) " 2\"")))
 
 (defun sixel-image-to-xpm-colours (sixel-image)
-  "Produce string representing colour definitions component of XPM
-representation of SIXEL-IMAGE."
+  "Produce colour definitions component of XPM representation of SIXEL-IMAGE."
   (let ((colour-map (sixel-image-colour-map sixel-image)))
     (concat
      (string-join
@@ -162,8 +160,7 @@ representation of SIXEL-IMAGE."
      "\"-- c #000000\"")))
 
 (defun sixel-image-to-xpm-pixels (sixel-image)
-  "Produce string representating pixels component of XPM representation
-of SIXEL-IMAGE."
+  "Produce pixels component of XPM representation of SIXEL-IMAGE."
   (concat
    "\""
    (string-join
@@ -184,7 +181,7 @@ of SIXEL-IMAGE."
    "\""))
 
 (defun sixel-to-xpm (string)
-  "Returns an XPM image representation of the SIXEL graphic encoded in STRING."
+  "Return an XPM image representation of the SIXEL graphic encoded in STRING."
   (let* ((param-string (sixel-get-params string))
          (data-string (sixel-get-data string))
          (sixel-image (sixel-pad-rows (sixel-process-data data-string))))
@@ -195,6 +192,20 @@ of SIXEL-IMAGE."
          (sixel-image-to-xpm-values sixel-image) ",\n"
          (sixel-image-to-xpm-colours sixel-image) ",\n"
          (sixel-image-to-xpm-pixels sixel-image) "};")
-      (error "Incorrecly formatted sixel string."))))
+      (error "Incorrecly formatted sixel string"))))
 
-;; sixel.el ends here
+(defun sixel-render-images-in-buffer ()
+  "Find and render any sixel images in the current buffer."
+  (interactive)
+  (save-excursion
+    (goto-char (point-min))
+    (while (re-search-forward "P[[:ascii:]]*\\\\" nil t)
+      (let ((sixel-string (match-string 0))
+            (inhibit-read-only t))
+        (delete-region (match-beginning 0)
+                       (match-end 0))
+        (insert-image
+         (create-image (sixel-to-xpm sixel-string) 'xpm t))
+        (insert "\n")))))
+
+;;; sixel.el ends here