lisp/org/org-macs.el

   1 ;;; org-macs.el --- Top-level definitions for Org-mode
   2
   3 ;; Copyright (C) 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
   4
   5 ;; Author: Carsten Dominik <carsten at orgmode dot org>
   6 ;; Keywords: outlines, hypermedia, calendar, wp
   7 ;; Homepage: http://orgmode.org
   8 ;; Version: 6.13a
   9 ;;
  10 ;; This file is part of GNU Emacs.
  11 ;;
  12 ;; GNU Emacs is free software: you can redistribute it and/or modify
  13 ;; it under the terms of the GNU General Public License as published by
  14 ;; the Free Software Foundation, either version 3 of the License, or
  15 ;; (at your option) any later version.
  16
  17 ;; GNU Emacs is distributed in the hope that it will be useful,
  18 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  19 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20 ;; GNU General Public License for more details.
  21
  22 ;; You should have received a copy of the GNU General Public License
  23 ;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
  24 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
  25 ;;
  26 ;;; Commentary:
  27
  28 ;; This file contains macro definitions, defsubst definitions, other
  29 ;; stuff needed for compilation and top-level forms in Org-mode, as well
  30 ;; lots of small functions that are not org-mode specific but simply
  31 ;; generally useful stuff.
  32
  33 ;;; Code:
  34
  35 (defmacro org-bound-and-true-p (var)
  36   "Return the value of symbol VAR if it is bound, else nil."
  37   `(and (boundp (quote ,var)) ,var))
  38
  39 (defmacro org-unmodified (&rest body)
  40   "Execute body without changing `buffer-modified-p'."
  41   `(set-buffer-modified-p
  42     (prog1 (buffer-modified-p) ,@body)))
  43
  44 (defmacro org-re (s)
  45   "Replace posix classes in regular expression."
  46   (if (featurep 'xemacs)
  47       (let ((ss s))
  48         (save-match-data
  49           (while (string-match "\\[:alnum:\\]" ss)
  50             (setq ss (replace-match "a-zA-Z0-9" t t ss)))
  51           (while (string-match "\\[:alpha:\\]" ss)
  52             (setq ss (replace-match "a-zA-Z" t t ss)))
  53           ss))
  54     s))
  55
  56 (defmacro org-preserve-lc (&rest body)
  57   `(let ((_line (org-current-line))
  58          (_col (current-column)))
  59      (unwind-protect
  60          (progn ,@body)
  61        (goto-line _line)
  62        (org-move-to-column _col))))
  63
  64 (defmacro org-without-partial-completion (&rest body)
  65   `(let ((pc-mode (and (boundp 'partial-completion-mode)
  66                        partial-completion-mode)))
  67      (unwind-protect
  68          (progn
  69            (if pc-mode (partial-completion-mode -1))
  70            ,@body)
  71        (if pc-mode (partial-completion-mode 1)))))
  72
  73 (eval-and-compile
  74   (unless (fboundp 'declare-function)
  75     (defmacro declare-function (fn file &optional arglist fileonly))))
  76
  77 (defmacro org-maybe-intangible (props)
  78   "Add '(intangigble t) to PROPS if Emacs version is earlier than Emacs 22.
  79 In emacs 21, invisible text is not avoided by the command loop, so the
  80 intangible property is needed to make sure point skips this text.
  81 In Emacs 22, this is not necessary.  The intangible text property has
  82 led to problems with flyspell.  These problems are fixed in flyspell.el,
  83 but we still avoid setting the property in Emacs 22 and later.
  84 We use a macro so that the test can happen at compilation time."
  85   (if (< emacs-major-version 22)
  86       `(append '(intangible t) ,props)
  87     props))
  88
  89 (defmacro org-with-point-at (pom &rest body)
  90   "Move to buffer and point of point-or-marker POM for the duration of BODY."
  91   `(save-excursion
  92      (if (markerp ,pom) (set-buffer (marker-buffer ,pom)))
  93      (save-excursion
  94        (goto-char (or ,pom (point)))
  95        ,@body)))
  96
  97 (defmacro org-no-warnings (&rest body)
  98   (cons (if (fboundp 'with-no-warnings) 'with-no-warnings 'progn) body))
  99
 100 (defmacro org-if-unprotected (&rest body)
 101   "Execute BODY if there is no `org-protected' text property at point."
 102   `(unless (get-text-property (point) 'org-protected)
 103      ,@body))
 104
 105 (defmacro org-with-remote-undo (_buffer &rest _body)
 106   "Execute BODY while recording undo information in two buffers."
 107   `(let ((_cline (org-current-line))
 108          (_cmd this-command)
 109          (_buf1 (current-buffer))
 110          (_buf2 ,_buffer)
 111          (_undo1 buffer-undo-list)
 112          (_undo2 (with-current-buffer ,_buffer buffer-undo-list))
 113          _c1 _c2)
 114      ,@_body
 115      (when org-agenda-allow-remote-undo
 116        (setq _c1 (org-verify-change-for-undo
 117                   _undo1 (with-current-buffer _buf1 buffer-undo-list))
 118              _c2 (org-verify-change-for-undo
 119                   _undo2 (with-current-buffer _buf2 buffer-undo-list)))
 120        (when (or _c1 _c2)
 121          ;; make sure there are undo boundaries
 122          (and _c1 (with-current-buffer _buf1 (undo-boundary)))
 123          (and _c2 (with-current-buffer _buf2 (undo-boundary)))
 124          ;; remember which buffer to undo
 125          (push (list _cmd _cline _buf1 _c1 _buf2 _c2)
 126                org-agenda-undo-list)))))
 127
 128 (defmacro org-no-read-only (&rest body)
 129   "Inhibit read-only for BODY."
 130   `(let ((inhibit-read-only t)) ,@body))
 131
 132 (defconst org-rm-props '(invisible t face t keymap t intangible t mouse-face t
 133                                    rear-nonsticky t mouse-map t fontified t)
 134   "Properties to remove when a string without properties is wanted.")
 135
 136 (defsubst org-match-string-no-properties (num &optional string)
 137   (if (featurep 'xemacs)
 138       (let ((s (match-string num string)))
 139         (and s (remove-text-properties 0 (length s) org-rm-props s))
 140         s)
 141     (match-string-no-properties num string)))
 142
 143 (defsubst org-no-properties (s)
 144   (if (fboundp 'set-text-properties)
 145       (set-text-properties 0 (length s) nil s)
 146     (remove-text-properties 0 (length s) org-rm-props s))
 147   s)
 148
 149 (defsubst org-get-alist-option (option key)
 150   (cond ((eq key t) t)
 151         ((eq option t) t)
 152         ((assoc key option) (cdr (assoc key option)))
 153         (t (cdr (assq 'default option)))))
 154
 155 (defsubst org-inhibit-invisibility ()
 156   "Modified `buffer-invisibility-spec' for Emacs 21.
 157 Some ops with invisible text do not work correctly on Emacs 21.  For these
 158 we turn off invisibility temporarily.  Use this in a `let' form."
 159   (if (< emacs-major-version 22) nil buffer-invisibility-spec))
 160
 161 (defsubst org-set-local (var value)
 162   "Make VAR local in current buffer and set it to VALUE."
 163   (set (make-variable-buffer-local var) value))
 164
 165 (defsubst org-mode-p ()
 166   "Check if the current buffer is in Org-mode."
 167   (eq major-mode 'org-mode))
 168
 169 (defsubst org-last (list)
 170   "Return the last element of LIST."
 171   (car (last list)))
 172
 173 (defun org-let (list &rest body)
 174   (eval (cons 'let (cons list body))))
 175 (put 'org-let 'lisp-indent-function 1)
 176
 177 (defun org-let2 (list1 list2 &rest body)
 178   (eval (cons 'let (cons list1 (list (cons 'let (cons list2 body)))))))
 179 (put 'org-let2 'lisp-indent-function 2)
 180
 181 (defsubst org-call-with-arg (command arg)
 182   "Call COMMAND interactively, but pretend prefix arg was ARG."
 183   (let ((current-prefix-arg arg)) (call-interactively command)))
 184
 185 (defsubst org-current-line (&optional pos)
 186   (save-excursion
 187     (and pos (goto-char pos))
 188     ;; works also in narrowed buffer, because we start at 1, not point-min
 189     (+ (if (bolp) 1 0) (count-lines 1 (point)))))
 190
 191 (defsubst org-pos-in-match-range (pos n)
 192   (and (match-beginning n)
 193        (<= (match-beginning n) pos)
 194        (>= (match-end n) pos)))
 195
 196 (defun org-autoload (file functions)
 197   "Establish autoload for all FUNCTIONS in FILE, if not bound already."
 198   (let ((d (format "Documentation will be available after `%s.el' is loaded."
 199                    file))
 200         f)
 201     (while (setq f (pop functions))
 202       (or (fboundp f) (autoload f file d t)))))
 203
 204 (defun org-match-line (re)
 205   "Looking-at at the beginning of the current line."
 206   (save-excursion
 207     (goto-char (point-at-bol))
 208     (looking-at re)))
 209
 210 (defun org-plist-delete (plist property)
 211   "Delete PROPERTY from PLIST.
 212 This is in contrast to merely setting it to 0."
 213   (let (p)
 214     (while plist
 215       (if (not (eq property (car plist)))
 216           (setq p (plist-put p (car plist) (nth 1 plist))))
 217       (setq plist (cddr plist)))
 218     p))
 219
 220 (provide 'org-macs)
 221
 222 ;; arch-tag: 7e6a73ce-aac9-4fc0-9b30-ce6f89dc6668
 223
 224 ;;; org-macs.el ends here