lisp/org/org-macs.el

   1 ;;; org-macs.el --- Top-level definitions for Org-mode
   2
   3 ;; Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010
   4 ;;   Free Software Foundation, Inc.
   5
   6 ;; Author: Carsten Dominik <carsten at orgmode dot org>
   7 ;; Keywords: outlines, hypermedia, calendar, wp
   8 ;; Homepage: http://orgmode.org
   9 ;; Version: 6.33x
  10 ;;
  11 ;; This file is part of GNU Emacs.
  12 ;;
  13 ;; GNU Emacs is free software: you can redistribute it and/or modify
  14 ;; it under the terms of the GNU General Public License as published by
  15 ;; the Free Software Foundation, either version 3 of the License, or
  16 ;; (at your option) any later version.
  17
  18 ;; GNU Emacs is distributed in the hope that it will be useful,
  19 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  20 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  21 ;; GNU General Public License for more details.
  22
  23 ;; You should have received a copy of the GNU General Public License
  24 ;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
  25 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
  26 ;;
  27 ;;; Commentary:
  28
  29 ;; This file contains macro definitions, defsubst definitions, other
  30 ;; stuff needed for compilation and top-level forms in Org-mode, as well
  31 ;; lots of small functions that are not org-mode specific but simply
  32 ;; generally useful stuff.
  33
  34 ;;; Code:
  35
  36 (eval-and-compile
  37   (unless (fboundp 'declare-function)
  38     (defmacro declare-function (fn file &optional arglist fileonly))))
  39
  40 (declare-function org-add-props "org-compat" (string plist &rest props))
  41
  42 (defmacro org-bound-and-true-p (var)
  43   "Return the value of symbol VAR if it is bound, else nil."
  44   `(and (boundp (quote ,var)) ,var))
  45
  46 (defmacro org-unmodified (&rest body)
  47   "Execute body without changing `buffer-modified-p'.
  48 Also, do not record undo information."
  49   `(set-buffer-modified-p
  50     (prog1 (buffer-modified-p)
  51       (let ((buffer-undo-list t)
  52             before-change-functions after-change-functions)
  53         ,@body))))
  54
  55 (defmacro org-re (s)
  56   "Replace posix classes in regular expression."
  57   (if (featurep 'xemacs)
  58       (let ((ss s))
  59         (save-match-data
  60           (while (string-match "\\[:alnum:\\]" ss)
  61             (setq ss (replace-match "a-zA-Z0-9" t t ss)))
  62           (while (string-match "\\[:word:\\]" ss)
  63             (setq ss (replace-match "a-zA-Z0-9" t t ss)))
  64           (while (string-match "\\[:alpha:\\]" ss)
  65             (setq ss (replace-match "a-zA-Z" t t ss)))
  66           ss))
  67     s))
  68
  69 (defmacro org-preserve-lc (&rest body)
  70   `(let ((_line (org-current-line))
  71          (_col (current-column)))
  72      (unwind-protect
  73          (progn ,@body)
  74        (org-goto-line _line)
  75        (org-move-to-column _col))))
  76
  77 (defmacro org-without-partial-completion (&rest body)
  78   `(let ((pc-mode (and (boundp 'partial-completion-mode)
  79                        partial-completion-mode)))
  80      (unwind-protect
  81          (progn
  82            (if pc-mode (partial-completion-mode -1))
  83            ,@body)
  84        (if pc-mode (partial-completion-mode 1)))))
  85
  86 (defmacro org-maybe-intangible (props)
  87   "Add '(intangible t) to PROPS if Emacs version is earlier than Emacs 22.
  88 In emacs 21, invisible text is not avoided by the command loop, so the
  89 intangible property is needed to make sure point skips this text.
  90 In Emacs 22, this is not necessary.  The intangible text property has
  91 led to problems with flyspell.  These problems are fixed in flyspell.el,
  92 but we still avoid setting the property in Emacs 22 and later.
  93 We use a macro so that the test can happen at compilation time."
  94   (if (< emacs-major-version 22)
  95       `(append '(intangible t) ,props)
  96     props))
  97
  98 (defmacro org-with-point-at (pom &rest body)
  99   "Move to buffer and point of point-or-marker POM for the duration of BODY."
 100   `(save-excursion
 101      (if (markerp ,pom) (set-buffer (marker-buffer ,pom)))
 102      (save-excursion
 103        (goto-char (or ,pom (point)))
 104        ,@body)))
 105 (put 'org-with-point-at 'lisp-indent-function 1)
 106
 107 (defmacro org-no-warnings (&rest body)
 108   (cons (if (fboundp 'with-no-warnings) 'with-no-warnings 'progn) body))
 109
 110 (defmacro org-if-unprotected (&rest body)
 111   "Execute BODY if there is no `org-protected' text property at point."
 112   `(unless (get-text-property (point) 'org-protected)
 113      ,@body))
 114
 115 (defmacro org-if-unprotected-1 (&rest body)
 116   "Execute BODY if there is no `org-protected' text property at point-1."
 117   `(unless (get-text-property (1- (point)) 'org-protected)
 118      ,@body))
 119
 120 (defmacro org-if-unprotected-at (pos &rest body)
 121   "Execute BODY if there is no `org-protected' text property at POS."
 122   `(unless (get-text-property ,pos 'org-protected)
 123      ,@body))
 124 (put 'org-if-unprotected-at 'lisp-indent-function 1)
 125
 126
 127 (defmacro org-with-remote-undo (_buffer &rest _body)
 128   "Execute BODY while recording undo information in two buffers."
 129   `(let ((_cline (org-current-line))
 130          (_cmd this-command)
 131          (_buf1 (current-buffer))
 132          (_buf2 ,_buffer)
 133          (_undo1 buffer-undo-list)
 134          (_undo2 (with-current-buffer ,_buffer buffer-undo-list))
 135          _c1 _c2)
 136      ,@_body
 137      (when org-agenda-allow-remote-undo
 138        (setq _c1 (org-verify-change-for-undo
 139                   _undo1 (with-current-buffer _buf1 buffer-undo-list))
 140              _c2 (org-verify-change-for-undo
 141                   _undo2 (with-current-buffer _buf2 buffer-undo-list)))
 142        (when (or _c1 _c2)
 143          ;; make sure there are undo boundaries
 144          (and _c1 (with-current-buffer _buf1 (undo-boundary)))
 145          (and _c2 (with-current-buffer _buf2 (undo-boundary)))
 146          ;; remember which buffer to undo
 147          (push (list _cmd _cline _buf1 _c1 _buf2 _c2)
 148                org-agenda-undo-list)))))
 149
 150 (defmacro org-no-read-only (&rest body)
 151   "Inhibit read-only for BODY."
 152   `(let ((inhibit-read-only t)) ,@body))
 153
 154 (defconst org-rm-props '(invisible t face t keymap t intangible t mouse-face t
 155                                    rear-nonsticky t mouse-map t fontified t)
 156   "Properties to remove when a string without properties is wanted.")
 157
 158 (defsubst org-match-string-no-properties (num &optional string)
 159   (if (featurep 'xemacs)
 160       (let ((s (match-string num string)))
 161         (and s (remove-text-properties 0 (length s) org-rm-props s))
 162         s)
 163     (match-string-no-properties num string)))
 164
 165 (defsubst org-no-properties (s)
 166   (if (fboundp 'set-text-properties)
 167       (set-text-properties 0 (length s) nil s)
 168     (remove-text-properties 0 (length s) org-rm-props s))
 169   s)
 170
 171 (defsubst org-get-alist-option (option key)
 172   (cond ((eq key t) t)
 173         ((eq option t) t)
 174         ((assoc key option) (cdr (assoc key option)))
 175         (t (cdr (assq 'default option)))))
 176
 177 (defsubst org-check-external-command (cmd &optional use no-error)
 178   "Check if external program CMD for USE exists, error if not.
 179 When the program does exist, return its path.
 180 When it does not exist and NO-ERROR is set, return nil.
 181 Otherwise, throw an error.  The optional argument USE can describe what this
 182 program is needed for, so that the error message can be more informative."
 183   (or (executable-find cmd)
 184       (if no-error
 185           nil
 186         (error "Can't find `%s'%s" cmd
 187                (if use (format " (%s)" use) "")))))
 188
 189 (defsubst org-inhibit-invisibility ()
 190   "Modified `buffer-invisibility-spec' for Emacs 21.
 191 Some ops with invisible text do not work correctly on Emacs 21.  For these
 192 we turn off invisibility temporarily.  Use this in a `let' form."
 193   (if (< emacs-major-version 22) nil buffer-invisibility-spec))
 194
 195 (defsubst org-set-local (var value)
 196   "Make VAR local in current buffer and set it to VALUE."
 197   (set (make-local-variable var) value))
 198
 199 (defsubst org-mode-p ()
 200   "Check if the current buffer is in Org-mode."
 201   (eq major-mode 'org-mode))
 202
 203 (defsubst org-last (list)
 204   "Return the last element of LIST."
 205   (car (last list)))
 206
 207 (defun org-let (list &rest body)
 208   (eval (cons 'let (cons list body))))
 209 (put 'org-let 'lisp-indent-function 1)
 210
 211 (defun org-let2 (list1 list2 &rest body)
 212   (eval (cons 'let (cons list1 (list (cons 'let (cons list2 body)))))))
 213 (put 'org-let2 'lisp-indent-function 2)
 214
 215 (defsubst org-call-with-arg (command arg)
 216   "Call COMMAND interactively, but pretend prefix arg was ARG."
 217   (let ((current-prefix-arg arg)) (call-interactively command)))
 218
 219 (defsubst org-current-line (&optional pos)
 220   (save-excursion
 221     (and pos (goto-char pos))
 222     ;; works also in narrowed buffer, because we start at 1, not point-min
 223     (+ (if (bolp) 1 0) (count-lines 1 (point)))))
 224
 225 (defsubst org-goto-line (N)
 226   (save-restriction
 227     (widen)
 228     (goto-char (point-min))
 229     (forward-line (1- N))))
 230
 231 (defsubst org-current-line-string (&optional to-here)
 232   (buffer-substring (point-at-bol) (if to-here (point) (point-at-eol))))
 233
 234 (defsubst org-pos-in-match-range (pos n)
 235   (and (match-beginning n)
 236        (<= (match-beginning n) pos)
 237        (>= (match-end n) pos)))
 238
 239 (defun org-autoload (file functions)
 240   "Establish autoload for all FUNCTIONS in FILE, if not bound already."
 241   (let ((d (format "Documentation will be available after `%s.el' is loaded."
 242                    file))
 243         f)
 244     (while (setq f (pop functions))
 245       (or (fboundp f) (autoload f file d t)))))
 246
 247 (defun org-match-line (re)
 248   "Looking-at at the beginning of the current line."
 249   (save-excursion
 250     (goto-char (point-at-bol))
 251     (looking-at re)))
 252
 253 (defun org-plist-delete (plist property)
 254   "Delete PROPERTY from PLIST.
 255 This is in contrast to merely setting it to 0."
 256   (let (p)
 257     (while plist
 258       (if (not (eq property (car plist)))
 259           (setq p (plist-put p (car plist) (nth 1 plist))))
 260       (setq plist (cddr plist)))
 261     p))
 262
 263
 264 (defun org-replace-match-keep-properties (newtext &optional fixedcase
 265                                                   literal string)
 266   "Like `replace-match', but add the text properties found original text."
 267   (setq newtext (org-add-props newtext (text-properties-at
 268                                         (match-beginning 0) string)))
 269   (replace-match newtext fixedcase literal string))
 270
 271 (defmacro org-with-limited-levels (&rest body)
 272   "Execute BODY with limited number of outline levels."
 273   `(let* ((outline-regexp (org-get-limited-outline-regexp)))
 274      ,@body))
 275
 276 (defvar org-odd-levels-only) ; defined in org.el
 277 (defvar org-inlinetask-min-level) ; defined in org-inlinetask.el
 278 (defun org-get-limited-outline-regexp ()
 279   "Return outline-regexp with limited number of levels.
 280 The number of levels is controlled by "
 281   (if (or (not (org-mode-p)) (not (featurep 'org-inlinetask)))
 282
 283       outline-regexp
 284     (let* ((limit-level (1- org-inlinetask-min-level))
 285            (nstars (if org-odd-levels-only (1- (* limit-level 2)) limit-level)))
 286       (format "\\*\\{1,%d\\} " nstars))))
 287
 288 (provide 'org-macs)
 289
 290 ;; arch-tag: 7e6a73ce-aac9-4fc0-9b30-ce6f89dc6668
 291
 292 ;;; org-macs.el ends here