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c6a4116c62
* org-mime.el (org-mime-change-element-style): Correctly capture the HTML element instead of partially. Passing element of "p" would end up matching and altering "pre" elements as well. Need to properly anchor the regex to HTML elements. TINYCHANGE
346 lines
12 KiB
EmacsLisp
346 lines
12 KiB
EmacsLisp
;;; org-mime.el --- org html export for text/html MIME emails
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;; Copyright (C) 2010-2014 Eric Schulte
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;; Author: Eric Schulte
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;; Keywords: mime, mail, email, html
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;; Homepage: http://orgmode.org/worg/org-contrib/org-mime.php
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;; Version: 0.01
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;; This file is not part of GNU Emacs.
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;;; License:
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;; This program is free software; you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation; either version 3, or (at your option)
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;; any later version.
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;;
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;; This program is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;;
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;; You should have received a copy of the GNU General Public License
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;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
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;;; Commentary:
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;; WYSWYG, html mime composition using org-mode
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;;
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;; For mail composed using the orgstruct-mode minor mode, this
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;; provides a function for converting all or part of your mail buffer
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;; to embedded html as exported by org-mode. Call `org-mime-htmlize'
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;; in a message buffer to convert either the active region or the
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;; entire buffer to html.
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;;
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;; Similarly the `org-mime-org-buffer-htmlize' function can be called
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;; from within an org-mode buffer to convert the buffer to html, and
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;; package the results into an email handling with appropriate MIME
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;; encoding.
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;;
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;; you might want to bind this to a key with something like the
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;; following message-mode binding
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;;
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;; (add-hook 'message-mode-hook
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;; (lambda ()
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;; (local-set-key "\C-c\M-o" 'org-mime-htmlize)))
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;;
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;; and the following org-mode binding
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;;
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;; (add-hook 'org-mode-hook
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;; (lambda ()
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;; (local-set-key "\C-c\M-o" 'org-mime-org-buffer-htmlize)))
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;;; Code:
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(require 'cl)
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(declare-function org-export-string-as "ox"
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(string backend &optional body-only ext-plist))
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(defcustom org-mime-use-property-inheritance nil
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"Non-nil means al MAIL_ properties apply also for sublevels."
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:group 'org-mime
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:type 'boolean)
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(defcustom org-mime-default-header
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"#+OPTIONS: latex:t\n"
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"Default header to control html export options, and ensure
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first line isn't assumed to be a title line."
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:group 'org-mime
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:type 'string)
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(defcustom org-mime-library 'mml
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"Library to use for marking up MIME elements."
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:group 'org-mime
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:type '(choice 'mml 'semi 'vm))
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(defcustom org-mime-preserve-breaks t
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"Used as temporary value of `org-export-preserve-breaks' during
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mime encoding."
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:group 'org-mime
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:type 'boolean)
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(defcustom org-mime-fixedwith-wrap
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"<pre style=\"font-family: courier, monospace;\">\n%s</pre>\n"
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"Format string used to wrap a fixedwidth HTML email."
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:group 'org-mime
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:type 'string)
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(defcustom org-mime-html-hook nil
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"Hook to run over the html buffer before attachment to email.
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This could be used for example to post-process html elements."
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:group 'org-mime
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:type 'hook)
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(mapc (lambda (fmt)
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(eval `(defcustom
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,(intern (concat "org-mime-pre-" fmt "-hook"))
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nil
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(concat "Hook to run before " fmt " export.\nFunctions "
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"should take no arguments and will be run in a "
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"buffer holding\nthe text to be exported."))))
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'("ascii" "org" "html"))
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(defcustom org-mime-send-subtree-hook nil
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"Hook to run in the subtree in the Org-mode file before export.")
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(defcustom org-mime-send-buffer-hook nil
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"Hook to run in the Org-mode file before export.")
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;; example hook, for setting a dark background in <pre style="background-color: #EEE;"> elements
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(defun org-mime-change-element-style (element style)
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"Set new default htlm style for <ELEMENT> elements in exported html."
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(while (re-search-forward (format "<%s\\>" element) nil t)
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(replace-match (format "<%s style=\"%s\"" element style))))
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(defun org-mime-change-class-style (class style)
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"Set new default htlm style for objects with classs=CLASS in
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exported html."
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(while (re-search-forward (format "class=\"%s\"" class) nil t)
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(replace-match (format "class=\"%s\" style=\"%s\"" class style))))
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;; ;; example addition to `org-mime-html-hook' adding a dark background
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;; ;; color to <pre> elements
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;; (add-hook 'org-mime-html-hook
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;; (lambda ()
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;; (org-mime-change-element-style
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;; "pre" (format "color: %s; background-color: %s;"
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;; "#E6E1DC" "#232323"))
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;; (org-mime-change-class-style
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;; "verse" "border-left: 2px solid gray; padding-left: 4px;")))
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(defun org-mime-file (ext path id)
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"Markup a file for attachment."
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(case org-mime-library
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('mml (format (concat "<#part type=\"%s\" filename=\"%s\" "
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"disposition=inline id=\"<%s>\">\n<#/part>\n")
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ext path id))
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('semi (concat
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(format (concat "--[[%s\nContent-Disposition: "
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"inline;\nContent-ID: <%s>][base64]]\n")
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ext id)
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(base64-encode-string
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(with-temp-buffer
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(set-buffer-multibyte nil)
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(binary-insert-encoded-file path)
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(buffer-string)))))
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('vm "?")))
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(defun org-mime-multipart (plain html &optional images)
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"Markup a multipart/alternative with text/plain and text/html alternatives.
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If the html portion of the message includes images wrap the html
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and images in a multipart/related part."
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(case org-mime-library
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('mml (concat "<#multipart type=alternative><#part type=text/plain>"
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plain
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(when images "<#multipart type=related>")
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"<#part type=text/html>"
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html
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images
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(when images "<#/multipart>\n")
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"<#/multipart>\n"))
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('semi (concat
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"--" "<<alternative>>-{\n"
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"--" "[[text/plain]]\n" plain
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(if (and images (> (length images) 0))
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(concat "--" "<<related>>-{\n"
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"--" "[[text/html]]\n" html
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images
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"--" "}-<<related>>\n")
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(concat "--" "[[text/html]]\n" html
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images))
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"--" "}-<<alternative>>\n"))
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('vm "?")))
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(defun org-mime-replace-images (str current-file)
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"Replace images in html files with cid links."
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(let (html-images)
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(cons
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(replace-regexp-in-string ;; replace images in html
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"src=\"\\([^\"]+\\)\""
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(lambda (text)
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(format
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"src=\"cid:%s\""
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(let* ((url (and (string-match "src=\"\\([^\"]+\\)\"" text)
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(match-string 1 text)))
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(path (expand-file-name
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url (file-name-directory current-file)))
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(ext (file-name-extension path))
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(id (replace-regexp-in-string "[\/\\\\]" "_" path)))
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(add-to-list 'html-images
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(org-mime-file (concat "image/" ext) path id))
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id)))
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str)
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html-images)))
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(defun org-mime-htmlize (arg)
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"Export a portion of an email body composed using `mml-mode' to
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html using `org-mode'. If called with an active region only
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export that region, otherwise export the entire body."
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(interactive "P")
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(require 'ox-org)
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(require 'ox-html)
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(let* ((region-p (org-region-active-p))
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(html-start (or (and region-p (region-beginning))
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(save-excursion
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(goto-char (point-min))
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(search-forward mail-header-separator)
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(+ (point) 1))))
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(html-end (or (and region-p (region-end))
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;; TODO: should catch signature...
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(point-max)))
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(raw-body (concat org-mime-default-header
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(buffer-substring html-start html-end)))
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(tmp-file (make-temp-name (expand-file-name
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"mail" temporary-file-directory)))
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(body (org-export-string-as raw-body 'org t))
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;; because we probably don't want to export a huge style file
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(org-export-htmlize-output-type 'inline-css)
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;; makes the replies with ">"s look nicer
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(org-export-preserve-breaks org-mime-preserve-breaks)
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;; dvipng for inline latex because MathJax doesn't work in mail
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(org-html-with-latex 'dvipng)
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;; to hold attachments for inline html images
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(html-and-images
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(org-mime-replace-images
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(org-export-string-as raw-body 'html t) tmp-file))
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(html-images (unless arg (cdr html-and-images)))
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(html (org-mime-apply-html-hook
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(if arg
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(format org-mime-fixedwith-wrap body)
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(car html-and-images)))))
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(delete-region html-start html-end)
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(save-excursion
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(goto-char html-start)
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(insert (org-mime-multipart
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body html (mapconcat 'identity html-images "\n"))))))
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(defun org-mime-apply-html-hook (html)
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(if org-mime-html-hook
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(with-temp-buffer
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(insert html)
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(goto-char (point-min))
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(run-hooks 'org-mime-html-hook)
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(buffer-string))
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html))
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(defmacro org-mime-try (&rest body)
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`(condition-case nil ,@body (error nil)))
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(defun org-mime-send-subtree (&optional fmt)
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(save-restriction
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(org-narrow-to-subtree)
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(run-hooks 'org-mime-send-subtree-hook)
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(flet ((mp (p) (org-entry-get nil p org-mime-use-property-inheritance)))
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(let* ((file (buffer-file-name (current-buffer)))
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(subject (or (mp "MAIL_SUBJECT") (nth 4 (org-heading-components))))
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(to (mp "MAIL_TO"))
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(cc (mp "MAIL_CC"))
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(bcc (mp "MAIL_BCC"))
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(body (buffer-substring
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(save-excursion (goto-char (point-min))
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(forward-line 1)
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(when (looking-at "[ \t]*:PROPERTIES:")
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(re-search-forward ":END:" nil)
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(forward-char))
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(point))
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(point-max))))
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(org-mime-compose body (or fmt 'org) file to subject
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`((cc . ,cc) (bcc . ,bcc)))))))
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(defun org-mime-send-buffer (&optional fmt)
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(run-hooks 'org-mime-send-buffer-hook)
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(let* ((region-p (org-region-active-p))
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(file (buffer-file-name (current-buffer)))
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(subject (if (not file) (buffer-name (buffer-base-buffer))
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(file-name-sans-extension
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(file-name-nondirectory file))))
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(body-start (or (and region-p (region-beginning))
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(save-excursion (goto-char (point-min)))))
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(body-end (or (and region-p (region-end)) (point-max)))
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(temp-body-file (make-temp-file "org-mime-export"))
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(body (buffer-substring body-start body-end)))
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(org-mime-compose body (or fmt 'org) file nil subject)))
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(defun org-mime-compose (body fmt file &optional to subject headers)
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(require 'message)
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(message-mail to subject headers nil)
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(message-goto-body)
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(flet ((bhook (body fmt)
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(let ((hook (intern (concat "org-mime-pre-"
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(symbol-name fmt)
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"-hook"))))
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(if (> (eval `(length ,hook)) 0)
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(with-temp-buffer
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(insert body)
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(goto-char (point-min))
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(eval `(run-hooks ',hook))
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(buffer-string))
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body))))
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(let ((fmt (if (symbolp fmt) fmt (intern fmt))))
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(cond
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((eq fmt 'org)
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(require 'ox-org)
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(insert (org-export-string-as
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(org-babel-trim (bhook body 'org)) 'org t)))
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((eq fmt 'ascii)
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(require 'ox-ascii)
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(insert (org-export-string-as
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(concat "#+Title:\n" (bhook body 'ascii)) 'ascii t)))
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((or (eq fmt 'html) (eq fmt 'html-ascii))
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(require 'ox-ascii)
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(require 'ox-org)
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(let* ((org-link-file-path-type 'absolute)
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;; we probably don't want to export a huge style file
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(org-export-htmlize-output-type 'inline-css)
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(html-and-images
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(org-mime-replace-images
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(org-export-string-as (bhook body 'html) 'html t) file))
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(images (cdr html-and-images))
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(html (org-mime-apply-html-hook (car html-and-images))))
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(insert (org-mime-multipart
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(org-export-string-as
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(org-babel-trim
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(bhook body (if (eq fmt 'html) 'org 'ascii)))
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(if (eq fmt 'html) 'org 'ascii) t)
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html)
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(mapconcat 'identity images "\n"))))))))
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(defun org-mime-org-buffer-htmlize ()
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"Create an email buffer containing the current org-mode file
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exported to html and encoded in both html and in org formats as
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mime alternatives."
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(interactive)
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(org-mime-send-buffer 'html))
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(defun org-mime-subtree ()
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"Create an email buffer containing the current org-mode subtree
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exported to a org format or to the format specified by the
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MAIL_FMT property of the subtree."
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(interactive)
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(org-mime-send-subtree
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(or (org-entry-get nil "MAIL_FMT" org-mime-use-property-inheritance) 'org)))
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(provide 'org-mime)
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