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org-export-hatena.el
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;;; org-export-hatena.el
;; Author: Tsunenobu KAI
;; Keywords: Org-mode Hatena
;; URL: https://github.com/kbkbkbkb1/emacs-org-export-hatena
;; 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 of the License, 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 this program. If not, see <http://www.gnu.org/licenses/>.
;;; Commentary:
;;; Code:
(require 'org)
(require 'simple-hatena-mode)
(defvar org-export-hatena-decrease-level-num 1 "*Org-mode の見出しのレベルを減らす数．
すべての見出しの * の数をこの変数の数値だけ減らす．")
(defvar org-export-hatena-notation-1st-level
"^\\* \\([^:\t\n\r\f]*\\)\\(:?\\([^:\t\n\r\f]+:\\)*\\)$")
(defvar org-export-hatena-notation-2nd-level
"^\\*\\* \\([^\t\n\r\f]*\\)$")
(defvar org-export-hatena-notation-3rd-level
"^\\*\\*\\* \\([^\t\n\r\f]*\\)$")
(defvar org-export-hatena-notation-http-link
"\\[\\[\\(https?:[^]\n\r]*\\)\\]\\(\\[\\([^]\n\r]*\\)\\]\\)?\\]")
(defvar org-export-hatena-notation-quote
'("^\\s-*#\\+BEGIN_QUOTE" ">>" "^\\s-*#\\+END_QUOTE" "<<"))
(defvar org-export-hatena-notation-super-pre
'("^\\s-*#\\+BEGIN_EXAMPLE" ">||" "^\\s-*#\\+END_EXAMPLE" "||<"))
(defvar org-export-hatena-notation-src
'("^\\s-*#\\+BEGIN_SRC[ ]*\\([^ \t\n\r]+\\)" ">|\\1|" "^\\s-*#\\+END_SRC" "||<"))
(defvar org-export-hatena-notation-property-start
"^\\s-*:PROPERTIES:.*$")
(defvar org-export-hatena-notation-property-end
"^\\s-*:END:[ \t]*\n")
(defvar org-export-hatena-point-register nil)
(defvar org-export-hatena-1st-level-headline nil)
(defvar org-export-hatena-title nil)
(defvar org-export-hatena-post-date nil)
(defvar org-export-hatena-hatena-date nil)
(defun org-export-hatena-delete-posted-diary ()
"以前に投稿されている日記を削除する．
1レベルの見出しが変更されていると，以前に投稿されている部分が特定できないので
削除することができない．どうしよう．"
(when (re-search-forward org-export-hatena-1st-level-headline nil t)
(org-mark-subtree)
(delete-region (region-beginning) (region-end))))
(defun org-export-hatena-open-date-file ()
"`org-export-hatena-hatena-date' に対応する日にちのファイルを開く．"
(if (string-match "[0-9][0-9][0-9][0-9]-[01][0-9]-[0-3][0-9]"
org-export-hatena-hatena-date)
(simple-hatena-internal-safe-find-file
(concat simple-hatena-root "/"
simple-hatena-default-id
"/diary/"
(match-string 0 org-export-hatena-hatena-date)
".txt"))
(error "Invalid date")))
(defun org-export-hatena-read-1st-level-headline ()
"1レベルの見出しを読み取る．"
(goto-char (point-min))
(if (re-search-forward org-export-hatena-notation-1st-level nil t)
(setq org-export-hatena-1st-level-headline (match-string-no-properties 1))
(error "1レベルのヘッドラインが存在しません"))
;; 余分な空白文字を削除
(string-match "[ \t]*$" org-export-hatena-1st-level-headline)
(setq org-export-hatena-1st-level-headline
(replace-match "" nil nil org-export-hatena-1st-level-headline)))
(defun org-export-hatena-read-property ()
"Org-mode 日記のプロパティを読み取る．"
(goto-char (point-min))
(let ((beg (when (re-search-forward
org-export-hatena-notation-property-start nil t)
(match-beginning 0)))
(end (when (re-search-forward
org-export-hatena-notation-property-end nil t)
(match-end 0))))
(if (and beg end)
;; プロパティ領域があるとき
(progn
(goto-char beg)
(setq org-export-hatena-title (org-entry-get nil "HatenaTitle" t))
(setq org-export-hatena-hatena-date (org-entry-get nil "HatenaDate" t))
(setq org-export-hatena-post-date (org-entry-get nil "PostDate"))
(delete-region beg end))
;; プロパティ領域がないとき
(setq org-export-hatena-title nil)
(setq org-export-hatena-hatena-date nil)
(setq org-export-hatena-post-date nil))
(unless org-export-hatena-hatena-date
(setq org-export-hatena-hatena-date (format-time-string "[%Y-%m-%d %a]")))
))
(defun org-export-hatena-replace-title ()
""
(goto-char (point-min))
(delete-region (point) (progn (forward-line 1) (point)))
(insert (concat (if org-export-hatena-title
org-export-hatena-title "") "\n")))
(defun org-export-hatena-decrease-level (num)
"すべてのヘッドラインの * の数をこの変数の数値だけ減らす．"
(goto-char (point-min))
(while (re-search-forward "^\\*.*$" nil t)
(delete-region (match-beginning 0) (+ (match-beginning 0) num)))
)
(defun org-export-hatena-replace-one-line ()
"1行の記法を置換する．"
(org-export-hatena-replace-1st-level)
;(org-export-hatena-replace-2nd-level)
;(org-export-hatena-replace-3rd-level)
(org-export-hatena-replace-http-link))
(defun org-export-hatena-replace-http-link ()
"http のリンクを置換する"
(goto-char (point-min))
(while (re-search-forward org-export-hatena-notation-http-link nil t)
(if (null (match-string 3))
(replace-match "[\\1]")
(replace-match "[\\1:title=\\3]"))))
(defun org-export-hatena-replace-1st-level ()
"1レベルのヘッドラインをはてな記法に置換する．"
(goto-char (point-min))
(if (re-search-forward org-export-hatena-notation-1st-level nil t)
(replace-match "*t*\\2 \\1")
(error "1レベルのヘッドラインが存在しません"))
; delete trailing white spaces
(skip-chars-backward " \t")
(delete-region (point) (point-at-eol))
; replace tag format from :HOGE: to [HOGE]
(let ((bound (point))) ; point of end-of-line
(beginning-of-line)
; assume headline doesn't include ":" except tags
(when (re-search-forward ":" bound t)
(replace-match "["))
(while (re-search-forward ":" bound t)
(replace-match "]["))
(delete-char -1)
; delete [Blog] tag
(beginning-of-line)
(when (re-search-forward "\\[Blog\\]" bound t)
(replace-match ""))))
;; (defun org-export-hatena-replace-2nd-level ()
;; ""
;; (goto-char (point-min))
;; (while (re-search-forward org-export-hatena-notation-2nd-level nil t)
;; (replace-match "** \\1")))
;; (defun org-export-hatena-replace-3rd-level ()
;; ""
;; (goto-char (point-min))
;; (while (re-search-forward org-export-hatena-notation-3rd-level nil t)
;; (replace-match "*** \\1")))
(defun org-export-hatena-begin-to-end (notation)
(goto-char (point-min))
(while (re-search-forward (nth 0 notation) nil t)
(replace-match (nth 1 notation)))
(goto-char (point-min))
(while (re-search-forward (nth 2 notation) nil t)
(replace-match (nth 3 notation))))
(defun org-export-hatena-rewrite-property ()
"Org-mode 日記のプロパティを書き換える．
simple-hatena-after-submit-hook に引っかけて HatenaDate と PostDate を
書き換える．"
(when (get-register 'org-export-hatena-point-register)
(jump-to-register 'org-export-hatena-point-register)
(org-set-property "HatenaDate" org-export-hatena-hatena-date)
(org-set-property "PostDate" (format-time-string "[%Y-%m-%d %a %R]"))
(set-register 'org-export-hatena-point-register nil)))
(defun org-export-hatena (beg end)
"Org-mode のファイルをはてな記法にエクスポートする．"
(interactive "r")
;; Org-mode 日記の位置を覚えておく
(goto-char beg)
(point-to-register 'org-export-hatena-point-register)
(let ((diary (buffer-substring beg end)))
;; Org-mode 記事をはてな記法に変換
(with-temp-buffer
(pop-to-buffer (current-buffer))
(insert diary)
(org-export-hatena-decrease-level org-export-hatena-decrease-level-num)
(org-export-hatena-read-property)
(org-export-hatena-read-1st-level-headline)
(org-export-hatena-begin-to-end org-export-hatena-notation-quote)
(org-export-hatena-begin-to-end org-export-hatena-notation-super-pre)
(org-export-hatena-begin-to-end org-export-hatena-notation-src)
(org-export-hatena-replace-one-line)
(setq diary (buffer-substring (point-min) (point-max))))
;; open simple-hatena-mode buffer according to HatenaDate
(org-export-hatena-open-date-file)
(simple-hatena-mode)
(org-export-hatena-replace-title)
(when org-export-hatena-post-date
(org-export-hatena-delete-posted-diary))
(insert diary)))
(add-hook 'simple-hatena-after-submit-hook 'org-export-hatena-rewrite-property)
(provide 'org-export-hatena)
;;; org-export-hatena.el ends here