emacs-orgmode@gnu.org archives
 help / color / mirror / code / Atom feed
blob b0007ac8af3ba17cd5cce84ff34ea59f5c32526f 12381 bytes (raw)
name: contrib/lisp/org-mime.el 	 # note: path name is non-authoritative(*)

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
 
;;; org-mime.el --- org html export for text/html MIME emails

;; Copyright (C) 2010-2014 Eric Schulte

;; Author: Eric Schulte
;; Keywords: mime, mail, email, html
;; Homepage: http://orgmode.org/worg/org-contrib/org-mime.php
;; Version: 0.01

;; This file is not part of GNU Emacs.

;;; License:

;; This program is free software; you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation; either version 3, or (at your option)
;; any later version.
;;
;; This program is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;; GNU General Public License for more details.
;;
;; You should have received a copy of the GNU General Public License
;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.

;;; Commentary:

;; WYSWYG, html mime composition using org-mode
;;
;; For mail composed using the orgstruct-mode minor mode, this
;; provides a function for converting all or part of your mail buffer
;; to embedded html as exported by org-mode.  Call `org-mime-htmlize'
;; in a message buffer to convert either the active region or the
;; entire buffer to html.
;;
;; Similarly the `org-mime-org-buffer-htmlize' function can be called
;; from within an org-mode buffer to convert the buffer to html, and
;; package the results into an email handling with appropriate MIME
;; encoding.
;;
;; you might want to bind this to a key with something like the
;; following message-mode binding
;;
;;   (add-hook 'message-mode-hook
;;             (lambda ()
;;               (local-set-key "\C-c\M-o" 'org-mime-htmlize)))
;;
;; and the following org-mode binding
;;
;;   (add-hook 'org-mode-hook
;;             (lambda ()
;;               (local-set-key "\C-c\M-o" 'org-mime-org-buffer-htmlize)))

;;; Code:
(require 'cl)

(declare-function org-export-string-as "ox"
		  (string backend &optional body-only ext-plist))

(defcustom org-mime-use-property-inheritance nil
  "Non-nil means al MAIL_ properties apply also for sublevels."
  :group 'org-mime
  :type 'boolean)

(defcustom org-mime-default-header
  "#+OPTIONS: latex:t\n"
  "Default header to control html export options, and ensure
  first line isn't assumed to be a title line."
  :group 'org-mime
  :type 'string)

(defcustom org-mime-library 'mml
  "Library to use for marking up MIME elements."
  :group 'org-mime
  :type '(choice 'mml 'semi 'vm))

(defcustom org-mime-preserve-breaks t
  "Used as temporary value of `org-export-preserve-breaks' during
  mime encoding."
  :group 'org-mime
  :type 'boolean)

(defcustom org-mime-fixedwith-wrap
  "<pre style=\"font-family: courier, monospace;\">\n%s</pre>\n"
  "Format string used to wrap a fixedwidth HTML email."
  :group 'org-mime
  :type 'string)

(defcustom org-mime-html-hook nil
  "Hook to run over the html buffer before attachment to email.
  This could be used for example to post-process html elements."
  :group 'org-mime
  :type 'hook)

(mapc (lambda (fmt)
	(eval `(defcustom
		 ,(intern (concat "org-mime-pre-" fmt "-hook"))
		 nil
		 (concat "Hook to run before " fmt " export.\nFunctions "
			 "should take no arguments and will be run in a "
			 "buffer holding\nthe text to be exported."))))
      '("ascii" "org" "html"))

(defcustom org-mime-send-subtree-hook nil
  "Hook to run in the subtree in the Org-mode file before export.")

(defcustom org-mime-send-buffer-hook nil
  "Hook to run in the Org-mode file before export.")

;; example hook, for setting a dark background in <pre style="background-color: #EEE;"> elements
(defun org-mime-change-element-style (element style)
  "Set new default htlm style for <ELEMENT> elements in exported html."
  (while (re-search-forward (format "<%s" element) nil t)
    (replace-match (format "<%s style=\"%s\"" element style))))

(defun org-mime-change-class-style (class style)
  "Set new default htlm style for objects with classs=CLASS in
exported html."
  (while (re-search-forward (format "class=\"%s\"" class) nil t)
    (replace-match (format "class=\"%s\" style=\"%s\"" class style))))

;; ;; example addition to `org-mime-html-hook' adding a dark background
;; ;; color to <pre> elements
;; (add-hook 'org-mime-html-hook
;;           (lambda ()
;;             (org-mime-change-element-style
;;              "pre" (format "color: %s; background-color: %s;"
;;                            "#E6E1DC" "#232323"))
;; 	    (org-mime-change-class-style
;;              "verse" "border-left: 2px solid gray; padding-left: 4px;")))

(defun org-mime-file (ext path id)
  "Markup a file for attachment."
  (case org-mime-library
    ('mml (format (concat "<#part type=\"%s\" filename=\"%s\" "
			  "disposition=inline id=\"<%s>\">\n<#/part>\n")
		  ext path id))
    ('semi (concat
            (format (concat "--[[%s\nContent-Disposition: "
			    "inline;\nContent-ID: <%s>][base64]]\n")
		    ext id)
            (base64-encode-string
             (with-temp-buffer
               (set-buffer-multibyte nil)
               (binary-insert-encoded-file path)
               (buffer-string)))))
    ('vm "?")))

(defun org-mime-multipart (plain html &optional images)
  "Markup a multipart/alternative with text/plain and text/html alternatives.
If the html portion of the message includes images wrap the html
and images in a multipart/related part."
  (case org-mime-library
    ('mml (concat "<#multipart type=alternative><#part type=text/plain>"
		  plain
		  (when images "<#multipart type=related>")
		  "<#part type=text/html>"
		  html
		  images
		  (when images "<#/multipart>\n")
		  "<#/multipart>\n"))
    ('semi (concat
            "--" "<<alternative>>-{\n"
            "--" "[[text/plain]]\n" plain
	    (when images (concat "--" "<<alternative>>-{\n"))
            "--" "[[text/html]]\n"  html
	    images
	    (when images (concat "--" "}-<<alternative>>\n"))
            "--" "}-<<alternative>>\n"))
    ('vm "?")))

(defun org-mime-replace-images (str current-file)
  "Replace images in html files with cid links."
  (let (html-images)
    (cons
     (replace-regexp-in-string ;; replace images in html
      "src=\"\\([^\"]+\\)\""
      (lambda (text)
        (format
         "src=\"cid:%s\""
         (let* ((url (and (string-match "src=\"\\([^\"]+\\)\"" text)
                          (match-string 1 text)))
                (path (expand-file-name
                       url (file-name-directory current-file)))
                (ext (file-name-extension path))
                (id (replace-regexp-in-string "[\/\\\\]" "_" path)))
           (add-to-list 'html-images
                        (org-mime-file (concat "image/" ext) path id))
           id)))
      str)
     html-images)))

(defun org-mime-htmlize (arg)
  "Export a portion of an email body composed using `mml-mode' to
html using `org-mode'.  If called with an active region only
export that region, otherwise export the entire body."
  (interactive "P")
  (require 'ox-org)
  (require 'ox-html)
  (let* ((region-p (org-region-active-p))
         (html-start (or (and region-p (region-beginning))
                         (save-excursion
                           (goto-char (point-min))
                           (search-forward mail-header-separator)
                           (+ (point) 1))))
         (html-end (or (and region-p (region-end))
                       ;; TODO: should catch signature...
                       (point-max)))
         (raw-body (concat org-mime-default-header
			   (buffer-substring html-start html-end)))
         (tmp-file (make-temp-name (expand-file-name
				    "mail" temporary-file-directory)))
         (body (org-export-string-as raw-body 'org t))
         ;; because we probably don't want to export a huge style file
         (org-export-htmlize-output-type 'inline-css)
         ;; makes the replies with ">"s look nicer
         (org-export-preserve-breaks org-mime-preserve-breaks)
	 ;; dvipng for inline latex because MathJax doesn't work in mail
	 (org-html-with-latex 'dvipng)
         ;; to hold attachments for inline html images
         (html-and-images
          (org-mime-replace-images
	   (org-export-string-as raw-body 'html t) tmp-file))
         (html-images (unless arg (cdr html-and-images)))
         (html (org-mime-apply-html-hook
                (if arg
                    (format org-mime-fixedwith-wrap body)
                  (car html-and-images)))))
    (delete-region html-start html-end)
    (save-excursion
      (goto-char html-start)
      (insert (org-mime-multipart
	       body html (mapconcat 'identity html-images "\n"))))))

(defun org-mime-apply-html-hook (html)
  (if org-mime-html-hook
      (with-temp-buffer
        (insert html)
        (goto-char (point-min))
        (run-hooks 'org-mime-html-hook)
        (buffer-string))
    html))

(defmacro org-mime-try (&rest body)
  `(condition-case nil ,@body (error nil)))

(defun org-mime-send-subtree (&optional fmt)
  (save-restriction
    (org-narrow-to-subtree)
    (run-hooks 'org-mime-send-subtree-hook)
    (flet ((mp (p) (org-entry-get nil p org-mime-use-property-inheritance)))
      (let* ((file (buffer-file-name (current-buffer)))
	     (subject (or (mp "MAIL_SUBJECT") (nth 4 (org-heading-components))))
	     (to (mp "MAIL_TO"))
	     (cc (mp "MAIL_CC"))
	     (bcc (mp "MAIL_BCC"))
	     (body (buffer-substring
		    (save-excursion (goto-char (point-min))
				    (forward-line 1)
				    (when (looking-at "[ \t]*:PROPERTIES:")
				      (re-search-forward ":END:" nil)
				      (forward-char))
				    (point))
		    (point-max))))
	(org-mime-compose body (or fmt 'org) file to subject
			  `((cc . ,cc) (bcc . ,bcc)))))))

(defun org-mime-send-buffer (&optional fmt)
  (run-hooks 'org-mime-send-buffer-hook)
  (let* ((region-p (org-region-active-p))
	 (subject (org-export-grab-title-from-buffer))
         (file (buffer-file-name (current-buffer)))
         (body-start (or (and region-p (region-beginning))
                         (save-excursion (goto-char (point-min)))))
         (body-end (or (and region-p (region-end)) (point-max)))
	 (temp-body-file (make-temp-file "org-mime-export"))
	 (body (buffer-substring body-start body-end)))
    (org-mime-compose body (or fmt 'org) file nil subject)))

(defun org-mime-compose (body fmt file &optional to subject headers)
  (require 'message)
  (message-mail to subject headers nil)
  (message-goto-body)
  (flet ((bhook (body fmt)
		(let ((hook (intern (concat "org-mime-pre-"
					    (symbol-name fmt)
					    "-hook"))))
		  (if (> (eval `(length ,hook)) 0)
		      (with-temp-buffer
			(insert body)
			(goto-char (point-min))
			(eval `(run-hooks ',hook))
			(buffer-string))
		    body))))
    (let ((fmt (if (symbolp fmt) fmt (intern fmt))))
      (cond
       ((eq fmt 'org)
	(require 'ox-org)
	(insert (org-export-string-as
		 (org-babel-trim (bhook body 'org)) 'org t)))
       ((eq fmt 'ascii)
	(require 'ox-ascii)
	(insert (org-export-string-as
		 (concat "#+Title:\n" (bhook body 'ascii)) 'ascii t)))
       ((or (eq fmt 'html) (eq fmt 'html-ascii))
	(require 'ox-ascii)
	(require 'ox-org)
	(let* ((org-link-file-path-type 'absolute)
	       ;; we probably don't want to export a huge style file
	       (org-export-htmlize-output-type 'inline-css)
	       (html-and-images
		(org-mime-replace-images
		 (org-export-string-as (bhook body 'html) 'html t) file))
	       (images (cdr html-and-images))
	       (html (org-mime-apply-html-hook (car html-and-images))))
	  (insert (org-mime-multipart
		   (org-export-string-as
		    (org-babel-trim
		     (bhook body (if (eq fmt 'html) 'org 'ascii)))
		    (if (eq fmt 'html) 'org 'ascii) t)
		   html)
		  (mapconcat 'identity images "\n"))))))))

(defun org-mime-org-buffer-htmlize ()
  "Create an email buffer containing the current org-mode file
  exported to html and encoded in both html and in org formats as
  mime alternatives."
  (interactive)
  (org-mime-send-buffer 'html))

(defun org-mime-subtree ()
  "Create an email buffer containing the current org-mode subtree
  exported to a org format or to the format specified by the
  MAIL_FMT property of the subtree."
  (interactive)
  (org-mime-send-subtree
   (or (org-entry-get nil "MAIL_FMT" org-mime-use-property-inheritance) 'org)))

(provide 'org-mime)

debug log:

solving b0007ac ...
found b0007ac in https://git.savannah.gnu.org/cgit/emacs/org-mode.git

(*) Git path names are given by the tree(s) the blob belongs to.
    Blobs themselves have no identifier aside from the hash of its contents.^

Code repositories for project(s) associated with this public inbox

	https://git.savannah.gnu.org/cgit/emacs/org-mode.git

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).