org-macs.el 41 KB
Newer Older
Rasmus's avatar
Rasmus committed
1
;;; org-macs.el --- Top-level Definitions for Org -*- lexical-binding: t; -*-
2

Paul Eggert's avatar
Paul Eggert committed
3
;; Copyright (C) 2004-2020 Free Software Foundation, Inc.
4 5 6

;; Author: Carsten Dominik <carsten at orgmode dot org>
;; Keywords: outlines, hypermedia, calendar, wp
Rasmus's avatar
Rasmus committed
7
;; Homepage: https://orgmode.org
8 9 10
;;
;; This file is part of GNU Emacs.
;;
11
;; GNU Emacs is free software: you can redistribute it and/or modify
12
;; it under the terms of the GNU General Public License as published by
13 14
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.
15 16 17 18 19 20 21

;; GNU Emacs 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
22
;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
23 24 25 26 27
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;
;;; Commentary:

;; This file contains macro definitions, defsubst definitions, other
Rasmus's avatar
Rasmus committed
28 29 30
;; stuff needed for compilation and top-level forms in Org mode, as
;; well lots of small functions that are not Org mode specific but
;; simply generally useful stuff.
31 32 33

;;; Code:

34
(require 'cl-lib)
Bastien's avatar
Bastien committed
35 36 37 38 39 40 41 42
(require 'format-spec)

(declare-function org-string-collate-lessp "org-compat" (s1 s2 &optional locale ignore-case))

(defvar org-ts-regexp0)


;;; Macros
43

Bastien Guerry's avatar
Bastien Guerry committed
44
(defmacro org-with-gensyms (symbols &rest body)
45
  (declare (debug (sexp body)) (indent 1))
Bastien Guerry's avatar
Bastien Guerry committed
46
  `(let ,(mapcar (lambda (s)
47 48
		   `(,s (make-symbol (concat "--" (symbol-name ',s)))))
                 symbols)
Bastien Guerry's avatar
Bastien Guerry committed
49 50
     ,@body))

Bastien's avatar
Bastien committed
51 52
;; Use `with-silent-modifications' to ignore cosmetic changes and
;; `org-unmodified' to ignore real text modifications.
Bastien Guerry's avatar
Bastien Guerry committed
53
(defmacro org-unmodified (&rest body)
54
  "Run BODY while preserving the buffer's `buffer-modified-p' state."
55
  (declare (debug (body)))
56 57 58
  (org-with-gensyms (was-modified)
    `(let ((,was-modified (buffer-modified-p)))
       (unwind-protect
Bastien Guerry's avatar
Bastien Guerry committed
59 60 61 62
           (let ((buffer-undo-list t)
		 (inhibit-modification-hooks t))
	     ,@body)
	 (set-buffer-modified-p ,was-modified)))))
63

64
(defmacro org-without-partial-completion (&rest body)
65
  (declare (debug (body)))
66 67 68
  `(if (and (boundp 'partial-completion-mode)
	    partial-completion-mode
	    (fboundp 'partial-completion-mode))
69 70 71 72 73
       (unwind-protect
	   (progn
	     (partial-completion-mode -1)
	     ,@body)
	 (partial-completion-mode 1))
74
     ,@body))
75 76 77

(defmacro org-with-point-at (pom &rest body)
  "Move to buffer and point of point-or-marker POM for the duration of BODY."
78
  (declare (debug (form body)) (indent 1))
Bastien Guerry's avatar
Bastien Guerry committed
79 80
  (org-with-gensyms (mpom)
    `(let ((,mpom ,pom))
81
       (save-excursion
Bastien's avatar
Bastien committed
82
	 (when (markerp ,mpom) (set-buffer (marker-buffer ,mpom)))
Bastien Guerry's avatar
Bastien Guerry committed
83 84 85
	 (org-with-wide-buffer
	  (goto-char (or ,mpom (point)))
	  ,@body)))))
86

Bastien Guerry's avatar
Bastien Guerry committed
87
(defmacro org-with-remote-undo (buffer &rest body)
88
  "Execute BODY while recording undo information in two buffers."
89
  (declare (debug (form body)) (indent 1))
Bastien Guerry's avatar
Bastien Guerry committed
90 91 92 93
  (org-with-gensyms (cline cmd buf1 buf2 undo1 undo2 c1 c2)
    `(let ((,cline (org-current-line))
	   (,cmd this-command)
	   (,buf1 (current-buffer))
Bastien Guerry's avatar
Bastien Guerry committed
94
	   (,buf2 ,buffer)
Bastien Guerry's avatar
Bastien Guerry committed
95
	   (,undo1 buffer-undo-list)
Bastien Guerry's avatar
Bastien Guerry committed
96
	   (,undo2 (with-current-buffer ,buffer buffer-undo-list))
Bastien Guerry's avatar
Bastien Guerry committed
97
	   ,c1 ,c2)
Bastien Guerry's avatar
Bastien Guerry committed
98
       ,@body
Bastien Guerry's avatar
Bastien Guerry committed
99 100 101 102 103 104 105 106 107 108 109 110
       (when org-agenda-allow-remote-undo
	 (setq ,c1 (org-verify-change-for-undo
		    ,undo1 (with-current-buffer ,buf1 buffer-undo-list))
	       ,c2 (org-verify-change-for-undo
		    ,undo2 (with-current-buffer ,buf2 buffer-undo-list)))
	 (when (or ,c1 ,c2)
	   ;; make sure there are undo boundaries
	   (and ,c1 (with-current-buffer ,buf1 (undo-boundary)))
	   (and ,c2 (with-current-buffer ,buf2 (undo-boundary)))
	   ;; remember which buffer to undo
	   (push (list ,cmd ,cline ,buf1 ,c1 ,buf2 ,c2)
		 org-agenda-undo-list))))))
111 112 113

(defmacro org-no-read-only (&rest body)
  "Inhibit read-only for BODY."
114
  (declare (debug (body)))
115 116
  `(let ((inhibit-read-only t)) ,@body))

Glenn Morris's avatar
Glenn Morris committed
117 118
(defmacro org-save-outline-visibility (use-markers &rest body)
  "Save and restore outline visibility around BODY.
Bastien's avatar
Bastien committed
119 120 121 122
If USE-MARKERS is non-nil, use markers for the positions.  This
means that the buffer may change while running BODY, but it also
means that the buffer should stay alive during the operation,
because otherwise all these markers will point to nowhere."
123
  (declare (debug (form body)) (indent 1))
Bastien's avatar
Bastien committed
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
  (org-with-gensyms (data invisible-types markers?)
    `(let* ((,invisible-types '(org-hide-block org-hide-drawer outline))
	    (,markers? ,use-markers)
	    (,data
	     (mapcar (lambda (o)
		       (let ((beg (overlay-start o))
			     (end (overlay-end o))
			     (type (overlay-get o 'invisible)))
			 (and beg end
			      (> end beg)
			      (memq type ,invisible-types)
			      (list (if ,markers? (copy-marker beg) beg)
				    (if ,markers? (copy-marker end t) end)
				    type))))
		     (org-with-wide-buffer
		      (overlays-in (point-min) (point-max))))))
       (unwind-protect (progn ,@body)
	 (org-with-wide-buffer
	  (dolist (type ,invisible-types)
	    (remove-overlays (point-min) (point-max) 'invisible type))
	  (pcase-dolist (`(,beg ,end ,type) (delq nil ,data))
	    (org-flag-region beg end t type)
	    (when ,markers?
	      (set-marker beg nil)
	      (set-marker end nil))))))))
149 150

(defmacro org-with-wide-buffer (&rest body)
151
  "Execute body while temporarily widening the buffer."
152
  (declare (debug (body)))
153 154
  `(save-excursion
     (save-restriction
155 156
       (widen)
       ,@body)))
Glenn Morris's avatar
Glenn Morris committed
157

Carsten Dominik's avatar
Carsten Dominik committed
158 159
(defmacro org-with-limited-levels (&rest body)
  "Execute BODY with limited number of outline levels."
160 161 162 163 164 165 166 167 168 169 170
  (declare (debug (body)))
  `(progn
     (defvar org-called-with-limited-levels)
     (defvar org-outline-regexp)
     (defvar outline-regexp)
     (defvar org-outline-regexp-bol)
     (let* ((org-called-with-limited-levels t)
            (org-outline-regexp (org-get-limited-outline-regexp))
            (outline-regexp org-outline-regexp)
            (org-outline-regexp-bol (concat "^" org-outline-regexp)))
       ,@body)))
Carsten Dominik's avatar
Carsten Dominik committed
171

Bastien Guerry's avatar
Bastien Guerry committed
172
(defmacro org-eval-in-environment (environment form)
173
  (declare (debug (form form)) (indent 1))
Bastien Guerry's avatar
Bastien Guerry committed
174
  `(eval (list 'let ,environment ',form)))
175

Bastien Guerry's avatar
Bastien Guerry committed
176 177
;;;###autoload
(defmacro org-load-noerror-mustsuffix (file)
Rasmus's avatar
Rasmus committed
178 179 180
  "Load FILE with optional arguments NOERROR and MUSTSUFFIX."
  `(load ,file 'noerror nil nil 'mustsuffix))

Bastien's avatar
Bastien committed
181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355
(defmacro org-preserve-local-variables (&rest body)
  "Execute BODY while preserving local variables."
  (declare (debug (body)))
  `(let ((local-variables
	  (org-with-wide-buffer
	   (goto-char (point-max))
	   (let ((case-fold-search t))
	     (and (re-search-backward "^[ \t]*# +Local Variables:"
				      (max (- (point) 3000) 1)
				      t)
		  (delete-and-extract-region (point) (point-max)))))))
     (unwind-protect (progn ,@body)
       (when local-variables
	 (org-with-wide-buffer
	  (goto-char (point-max))
	  ;; If last section is folded, make sure to also hide file
	  ;; local variables after inserting them back.
	  (let ((overlay
		 (cl-find-if (lambda (o)
			       (eq 'outline (overlay-get o 'invisible)))
			     (overlays-at (1- (point))))))
	    (unless (bolp) (insert "\n"))
	    (insert local-variables)
	    (when overlay
	      (move-overlay overlay (overlay-start overlay) (point-max)))))))))

(defmacro org-no-popups (&rest body)
  "Suppress popup windows and evaluate BODY."
  `(let (pop-up-frames display-buffer-alist)
     ,@body))


;;; Buffer and windows

(defun org-base-buffer (buffer)
  "Return the base buffer of BUFFER, if it has one.  Else return the buffer."
  (when buffer
    (or (buffer-base-buffer buffer)
	buffer)))

(defun org-find-base-buffer-visiting (file)
  "Like `find-buffer-visiting' but always return the base buffer and
not an indirect buffer."
  (let ((buf (or (get-file-buffer file)
		 (find-buffer-visiting file))))
    (org-base-buffer buf)))

(defun org-switch-to-buffer-other-window (&rest args)
  "Switch to buffer in a second window on the current frame.
In particular, do not allow pop-up frames.
Returns the newly created buffer."
  (org-no-popups (apply #'switch-to-buffer-other-window args)))

(defun org-fit-window-to-buffer (&optional window max-height min-height
                                           shrink-only)
  "Fit WINDOW to the buffer, but only if it is not a side-by-side window.
WINDOW defaults to the selected window.  MAX-HEIGHT and MIN-HEIGHT are
passed through to `fit-window-to-buffer'.  If SHRINK-ONLY is set, call
`shrink-window-if-larger-than-buffer' instead, the height limit is
ignored in this case."
  (cond ((if (fboundp 'window-full-width-p)
             (not (window-full-width-p window))
           ;; Do nothing if another window would suffer.
           (> (frame-width) (window-width window))))
        ((and (fboundp 'fit-window-to-buffer) (not shrink-only))
         (fit-window-to-buffer window max-height min-height))
        ((fboundp 'shrink-window-if-larger-than-buffer)
         (shrink-window-if-larger-than-buffer window)))
  (or window (selected-window)))



;;; File

(defun org-file-newer-than-p (file time)
  "Non-nil if FILE is newer than TIME.
FILE is a filename, as a string, TIME is a list of integers, as
returned by, e.g., `current-time'."
  (and (file-exists-p file)
       ;; Only compare times up to whole seconds as some file-systems
       ;; (e.g. HFS+) do not retain any finer granularity.  As
       ;; a consequence, make sure we return non-nil when the two
       ;; times are equal.
       (not (time-less-p (cl-subseq (nth 5 (file-attributes file)) 0 2)
			 (cl-subseq time 0 2)))))

(defun org-compile-file (source process ext &optional err-msg log-buf spec)
  "Compile a SOURCE file using PROCESS.

PROCESS is either a function or a list of shell commands, as
strings.  EXT is a file extension, without the leading dot, as
a string.  It is used to check if the process actually succeeded.

PROCESS must create a file with the same base name and directory
as SOURCE, but ending with EXT.  The function then returns its
filename.  Otherwise, it raises an error.  The error message can
then be refined by providing string ERR-MSG, which is appended to
the standard message.

If PROCESS is a function, it is called with a single argument:
the SOURCE file.

If it is a list of commands, each of them is called using
`shell-command'.  By default, in each command, %b, %f, %F, %o and
%O are replaced with, respectively, SOURCE base name, name, full
name, directory and absolute output file name.  It is possible,
however, to use more place-holders by specifying them in optional
argument SPEC, as an alist following the pattern

  (CHARACTER . REPLACEMENT-STRING).

When PROCESS is a list of commands, optional argument LOG-BUF can
be set to a buffer or a buffer name.  `shell-command' then uses
it for output."
  (let* ((base-name (file-name-base source))
	 (full-name (file-truename source))
	 (out-dir (or (file-name-directory source) "./"))
	 (output (expand-file-name (concat base-name "." ext) out-dir))
	 (time (current-time))
	 (err-msg (if (stringp err-msg) (concat ".  " err-msg) "")))
    (save-window-excursion
      (pcase process
	((pred functionp) (funcall process (shell-quote-argument source)))
	((pred consp)
	 (let ((log-buf (and log-buf (get-buffer-create log-buf)))
	       (spec (append spec
			     `((?b . ,(shell-quote-argument base-name))
			       (?f . ,(shell-quote-argument source))
			       (?F . ,(shell-quote-argument full-name))
			       (?o . ,(shell-quote-argument out-dir))
			       (?O . ,(shell-quote-argument output))))))
	   (dolist (command process)
	     (shell-command (format-spec command spec) log-buf))
	   (when log-buf (with-current-buffer log-buf (compilation-mode)))))
	(_ (error "No valid command to process %S%s" source err-msg))))
    ;; Check for process failure.  Output file is expected to be
    ;; located in the same directory as SOURCE.
    (unless (org-file-newer-than-p output time)
      (error (format "File %S wasn't produced%s" output err-msg)))
    output))



;;; Indentation

(defun org-do-remove-indentation (&optional n)
  "Remove the maximum common indentation from the buffer.
When optional argument N is a positive integer, remove exactly
that much characters from indentation, if possible.  Return nil
if it fails."
  (catch :exit
    (goto-char (point-min))
    ;; Find maximum common indentation, if not specified.
    (let ((n (or n
		 (let ((min-ind (point-max)))
		   (save-excursion
		     (while (re-search-forward "^[ \t]*\\S-" nil t)
		       (let ((ind (current-indentation)))
			 (if (zerop ind) (throw :exit nil)
			   (setq min-ind (min min-ind ind))))))
		   min-ind))))
      (if (zerop n) (throw :exit nil)
	;; Remove exactly N indentation, but give up if not possible.
	(while (not (eobp))
	  (let ((ind (progn (skip-chars-forward " \t") (current-column))))
	    (cond ((eolp) (delete-region (line-beginning-position) (point)))
		  ((< ind n) (throw :exit nil))
		  (t (indent-line-to (- ind n))))
	    (forward-line)))
	;; Signal success.
	t))))



;;; Input
Rasmus's avatar
Rasmus committed
356 357 358 359 360 361 362 363 364 365

(defun org-read-function (prompt &optional allow-empty?)
  "Prompt for a function.
If ALLOW-EMPTY? is non-nil, return nil rather than raising an
error when the user input is empty."
  (let ((func (completing-read prompt obarray #'fboundp t)))
    (cond ((not (string= func ""))
	   (intern func))
	  (allow-empty? nil)
	  (t (user-error "Empty input is not valid")))))
Bastien Guerry's avatar
Bastien Guerry committed
366

Bastien's avatar
Bastien committed
367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551
(defun org-completing-read (&rest args)
  "Completing-read with SPACE being a normal character."
  (let ((enable-recursive-minibuffers t)
	(minibuffer-local-completion-map
	 (copy-keymap minibuffer-local-completion-map)))
    (define-key minibuffer-local-completion-map " " 'self-insert-command)
    (define-key minibuffer-local-completion-map "?" 'self-insert-command)
    (define-key minibuffer-local-completion-map (kbd "C-c !")
      'org-time-stamp-inactive)
    (apply #'completing-read args)))

(defun org--mks-read-key (allowed-keys prompt)
  "Read a key and ensure it is a member of ALLOWED-KEYS.
TAB, SPC and RET are treated equivalently."
  (let* ((key (char-to-string
	       (pcase (read-char-exclusive prompt)
		 ((or ?\s ?\t ?\r) ?\t)
		 (char char)))))
    (if (member key allowed-keys)
        key
      (message "Invalid key: `%s'" key)
      (sit-for 1)
      (org--mks-read-key allowed-keys prompt))))

(defun org-mks (table title &optional prompt specials)
  "Select a member of an alist with multiple keys.

TABLE is the alist which should contain entries where the car is a string.
There should be two types of entries.

1. prefix descriptions like (\"a\" \"Description\")
   This indicates that `a' is a prefix key for multi-letter selection, and
   that there are entries following with keys like \"ab\", \"ax\"...

2. Select-able members must have more than two elements, with the first
   being the string of keys that lead to selecting it, and the second a
   short description string of the item.

The command will then make a temporary buffer listing all entries
that can be selected with a single key, and all the single key
prefixes.  When you press the key for a single-letter entry, it is selected.
When you press a prefix key, the commands (and maybe further prefixes)
under this key will be shown and offered for selection.

TITLE will be placed over the selection in the temporary buffer,
PROMPT will be used when prompting for a key.  SPECIALS is an
alist with (\"key\" \"description\") entries.  When one of these
is selected, only the bare key is returned."
  (save-window-excursion
    (let ((inhibit-quit t)
	  (buffer (org-switch-to-buffer-other-window "*Org Select*"))
	  (prompt (or prompt "Select: "))
	  current)
      (unwind-protect
	  (catch 'exit
	    (while t
	      (erase-buffer)
	      (insert title "\n\n")
	      (let ((des-keys nil)
		    (allowed-keys '("\C-g"))
		    (tab-alternatives '("\s" "\t" "\r"))
		    (cursor-type nil))
		;; Populate allowed keys and descriptions keys
		;; available with CURRENT selector.
		(let ((re (format "\\`%s\\(.\\)\\'"
				  (if current (regexp-quote current) "")))
		      (prefix (if current (concat current " ") "")))
		  (dolist (entry table)
		    (pcase entry
		      ;; Description.
		      (`(,(and key (pred (string-match re))) ,desc)
		       (let ((k (match-string 1 key)))
			 (push k des-keys)
			 ;; Keys ending in tab, space or RET are equivalent.
			 (if (member k tab-alternatives)
			     (push "\t" allowed-keys)
			   (push k allowed-keys))
			 (insert prefix "[" k "]" "..." "  " desc "..." "\n")))
		      ;; Usable entry.
		      (`(,(and key (pred (string-match re))) ,desc . ,_)
		       (let ((k (match-string 1 key)))
			 (insert prefix "[" k "]" "     " desc "\n")
			 (push k allowed-keys)))
		      (_ nil))))
		;; Insert special entries, if any.
		(when specials
		  (insert "----------------------------------------------------\
---------------------------\n")
		  (pcase-dolist (`(,key ,description) specials)
		    (insert (format "[%s]     %s\n" key description))
		    (push key allowed-keys)))
		;; Display UI and let user select an entry or
		;; a sub-level prefix.
		(goto-char (point-min))
		(unless (pos-visible-in-window-p (point-max))
		  (org-fit-window-to-buffer))
		(let ((pressed (org--mks-read-key allowed-keys prompt)))
		  (setq current (concat current pressed))
		  (cond
		   ((equal pressed "\C-g") (user-error "Abort"))
		   ;; Selection is a prefix: open a new menu.
		   ((member pressed des-keys))
		   ;; Selection matches an association: return it.
		   ((let ((entry (assoc current table)))
		      (and entry (throw 'exit entry))))
		   ;; Selection matches a special entry: return the
		   ;; selection prefix.
		   ((assoc current specials) (throw 'exit current))
		   (t (error "No entry available")))))))
	(when buffer (kill-buffer buffer))))))


;;; List manipulation

(defsubst org-get-alist-option (option key)
  (cond ((eq key t) t)
	((eq option t) t)
	((assoc key option) (cdr (assoc key option)))
	(t (let ((r (cdr (assq 'default option))))
	     (if (listp r) (delq nil r) r)))))

(defsubst org-last (list)
  "Return the last element of LIST."
  (car (last list)))

(defsubst org-uniquify (list)
  "Non-destructively remove duplicate elements from LIST."
  (let ((res (copy-sequence list))) (delete-dups res)))

(defun org-uniquify-alist (alist)
  "Merge elements of ALIST with the same key.

For example, in this alist:

\(org-uniquify-alist \\='((a 1) (b 2) (a 3)))
  => \\='((a 1 3) (b 2))

merge (a 1) and (a 3) into (a 1 3).

The function returns the new ALIST."
  (let (rtn)
    (dolist (e alist rtn)
      (let (n)
	(if (not (assoc (car e) rtn))
	    (push e rtn)
	  (setq n (cons (car e) (append (cdr (assoc (car e) rtn)) (cdr e))))
	  (setq rtn (assq-delete-all (car e) rtn))
	  (push n rtn))))))

(defun org-delete-all (elts list)
  "Remove all elements in ELTS from LIST.
Comparison is done with `equal'.  It is a destructive operation
that may remove elements by altering the list structure."
  (while elts
    (setq list (delete (pop elts) list)))
  list)

(defun org-plist-delete (plist property)
  "Delete PROPERTY from PLIST.
This is in contrast to merely setting it to 0."
  (let (p)
    (while plist
      (if (not (eq property (car plist)))
	  (setq p (plist-put p (car plist) (nth 1 plist))))
      (setq plist (cddr plist)))
    p))

(defun org-combine-plists (&rest plists)
  "Create a single property list from all plists in PLISTS.
The process starts by copying the first list, and then setting properties
from the other lists.  Settings in the last list are the most significant
ones and overrule settings in the other lists."
  (let ((rtn (copy-sequence (pop plists)))
	p v ls)
    (while plists
      (setq ls (pop plists))
      (while ls
	(setq p (pop ls) v (pop ls))
	(setq rtn (plist-put rtn p v))))
    rtn))



;;; Local variables

Rasmus's avatar
Rasmus committed
552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587
(defconst org-unique-local-variables
  '(org-element--cache
    org-element--cache-objects
    org-element--cache-sync-keys
    org-element--cache-sync-requests
    org-element--cache-sync-timer)
  "List of local variables that cannot be transferred to another buffer.")

(defun org-get-local-variables ()
  "Return a list of all local variables in an Org mode buffer."
  (delq nil
	(mapcar
	 (lambda (x)
	   (let* ((binding (if (symbolp x) (list x) (list (car x) (cdr x))))
		  (name (car binding)))
	     (and (not (get name 'org-state))
		  (not (memq name org-unique-local-variables))
		  (string-match-p
		   "\\`\\(org-\\|orgtbl-\\|outline-\\|comment-\\|paragraph-\\|\
auto-fill\\|normal-auto-fill\\|fill-paragraph\\|indent-\\)"
		   (symbol-name name))
		  binding)))
	 (with-temp-buffer
	   (org-mode)
	   (buffer-local-variables)))))

(defun org-clone-local-variables (from-buffer &optional regexp)
  "Clone local variables from FROM-BUFFER.
Optional argument REGEXP selects variables to clone."
  (dolist (pair (buffer-local-variables from-buffer))
    (pcase pair
      (`(,name . ,value)		;ignore unbound variables
       (when (and (not (memq name org-unique-local-variables))
		  (or (null regexp) (string-match-p regexp (symbol-name name))))
	 (ignore-errors (set (make-local-variable name) value)))))))

Bastien's avatar
Bastien committed
588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185

;;; Miscellaneous

(defsubst org-call-with-arg (command arg)
  "Call COMMAND interactively, but pretend prefix arg was ARG."
  (let ((current-prefix-arg arg)) (call-interactively command)))

(defsubst org-check-external-command (cmd &optional use no-error)
  "Check if external program CMD for USE exists, error if not.
When the program does exist, return its path.
When it does not exist and NO-ERROR is set, return nil.
Otherwise, throw an error.  The optional argument USE can describe what this
program is needed for, so that the error message can be more informative."
  (or (executable-find cmd)
      (if no-error
	  nil
	(error "Can't find `%s'%s" cmd
	       (if use (format " (%s)" use) "")))))

(defun org-display-warning (message)
  "Display the given MESSAGE as a warning."
  (display-warning 'org message :warning))

(defun org-unlogged-message (&rest args)
  "Display a message, but avoid logging it in the *Messages* buffer."
  (let ((message-log-max nil))
    (apply #'message args)))

(defun org-let (list &rest body)
  (eval (cons 'let (cons list body))))
(put 'org-let 'lisp-indent-function 1)

(defun org-let2 (list1 list2 &rest body)
  (eval (cons 'let (cons list1 (list (cons 'let (cons list2 body)))))))
(put 'org-let2 'lisp-indent-function 2)

(defun org-eval (form)
  "Eval FORM and return result."
  (condition-case error
      (eval form)
    (error (format "%%![Error: %s]" error))))

(defvar org-outline-regexp) ; defined in org.el
(defvar org-odd-levels-only) ; defined in org.el
(defvar org-inlinetask-min-level) ; defined in org-inlinetask.el
(defun org-get-limited-outline-regexp ()
  "Return outline-regexp with limited number of levels.
The number of levels is controlled by `org-inlinetask-min-level'."
  (cond ((not (derived-mode-p 'org-mode))
	 outline-regexp)
	((not (featurep 'org-inlinetask))
	 org-outline-regexp)
	(t
	 (let* ((limit-level (1- org-inlinetask-min-level))
		(nstars (if org-odd-levels-only
			    (1- (* limit-level 2))
			  limit-level)))
	   (format "\\*\\{1,%d\\} " nstars)))))



;;; Motion

(defsubst org-goto-line (N)
  (save-restriction
    (widen)
    (goto-char (point-min))
    (forward-line (1- N))))

(defsubst org-current-line (&optional pos)
  (save-excursion
    (and pos (goto-char pos))
    ;; works also in narrowed buffer, because we start at 1, not point-min
    (+ (if (bolp) 1 0) (count-lines 1 (point)))))



;;; Overlays

(defun org-overlay-display (ovl text &optional face evap)
  "Make overlay OVL display TEXT with face FACE."
  (overlay-put ovl 'display text)
  (when face (overlay-put ovl 'face face))
  (when evap (overlay-put ovl 'evaporate t)))

(defun org-overlay-before-string (ovl text &optional face evap)
  "Make overlay OVL display TEXT with face FACE."
  (when face (org-add-props text nil 'face face))
  (overlay-put ovl 'before-string text)
  (when evap (overlay-put ovl 'evaporate t)))

(defun org-find-overlays (prop &optional pos delete)
  "Find all overlays specifying PROP at POS or point.
If DELETE is non-nil, delete all those overlays."
  (let (found)
    (dolist (ov (overlays-at (or pos (point))) found)
      (cond ((not (overlay-get ov prop)))
	    (delete (delete-overlay ov))
	    (t (push ov found))))))

(defun org-flag-region (from to flag spec)
  "Hide or show lines from FROM to TO, according to FLAG.
SPEC is the invisibility spec, as a symbol."
  (remove-overlays from to 'invisible spec)
  ;; Use `front-advance' since text right before to the beginning of
  ;; the overlay belongs to the visible line than to the contents.
  (when flag
    (let ((o (make-overlay from to nil 'front-advance)))
      (overlay-put o 'evaporate t)
      (overlay-put o 'invisible spec)
      (overlay-put o 'isearch-open-invisible #'delete-overlay))))



;;; Regexp matching

(defsubst org-pos-in-match-range (pos n)
  (and (match-beginning n)
       (<= (match-beginning n) pos)
       (>= (match-end n) pos)))

(defun org-skip-whitespace ()
  "Skip over space, tabs and newline characters."
  (skip-chars-forward " \t\n\r"))

(defun org-match-line (regexp)
  "Match REGEXP at the beginning of the current line."
  (save-excursion
    (beginning-of-line)
    (looking-at regexp)))

(defun org-match-any-p (re list)
  "Non-nil if regexp RE matches an element in LIST."
  (cl-some (lambda (x) (string-match-p re x)) list))

(defun org-in-regexp (regexp &optional nlines visually)
  "Check if point is inside a match of REGEXP.

Normally only the current line is checked, but you can include
NLINES extra lines around point into the search.  If VISUALLY is
set, require that the cursor is not after the match but really
on, so that the block visually is on the match.

Return nil or a cons cell (BEG . END) where BEG and END are,
respectively, the positions at the beginning and the end of the
match."
  (catch :exit
    (let ((pos (point))
          (eol (line-end-position (if nlines (1+ nlines) 1))))
      (save-excursion
	(beginning-of-line (- 1 (or nlines 0)))
	(while (and (re-search-forward regexp eol t)
		    (<= (match-beginning 0) pos))
	  (let ((end (match-end 0)))
	    (when (or (> end pos) (and (= end pos) (not visually)))
	      (throw :exit (cons (match-beginning 0) (match-end 0))))))))))

(defun org-point-in-group (point group &optional context)
  "Check if POINT is in match-group GROUP.
If CONTEXT is non-nil, return a list with CONTEXT and the boundaries of the
match.  If the match group does not exist or point is not inside it,
return nil."
  (and (match-beginning group)
       (>= point (match-beginning group))
       (<= point (match-end group))
       (if context
	   (list context (match-beginning group) (match-end group))
	 t)))



;;; String manipulation

(defun org-string< (a b)
  (org-string-collate-lessp a b))

(defun org-string<= (a b)
  (or (string= a b) (org-string-collate-lessp a b)))

(defun org-string>= (a b)
  (not (org-string-collate-lessp a b)))

(defun org-string> (a b)
  (and (not (string= a b))
       (not (org-string-collate-lessp a b))))

(defun org-string<> (a b)
  (not (string= a b)))

(defsubst org-trim (s &optional keep-lead)
  "Remove whitespace at the beginning and the end of string S.
When optional argument KEEP-LEAD is non-nil, removing blank lines
at the beginning of the string does not affect leading indentation."
  (replace-regexp-in-string
   (if keep-lead "\\`\\([ \t]*\n\\)+" "\\`[ \t\n\r]+") ""
   (replace-regexp-in-string "[ \t\n\r]+\\'" "" s)))

(defun org-string-nw-p (s)
  "Return S if S is a string containing a non-blank character.
Otherwise, return nil."
  (and (stringp s)
       (string-match-p "[^ \r\t\n]" s)
       s))

(defun org-reverse-string (string)
  "Return the reverse of STRING."
  (apply #'string (nreverse (string-to-list string))))

(defun org-split-string (string &optional separators)
  "Splits STRING into substrings at SEPARATORS.

SEPARATORS is a regular expression.  When nil, it defaults to
\"[ \f\t\n\r\v]+\".

Unlike `split-string', matching SEPARATORS at the beginning and
end of string are ignored."
  (let ((separators (or separators "[ \f\t\n\r\v]+")))
    (if (not (string-match separators string)) (list string)
      (let ((i (match-end 0))
	    (results
	     (and (/= 0 (match-beginning 0)) ;skip leading separator
		  (list (substring string 0 (match-beginning 0))))))
	(while (string-match separators string i)
	  (push (substring string i (match-beginning 0))
		results)
	  (setq i (match-end 0)))
	(nreverse (if (= i (length string))
		      results		;skip trailing separator
		    (cons (substring string i) results)))))))

(defun org--string-from-props (s property beg end)
  "Return the visible part of string S.
Visible part is determined according to text PROPERTY, which is
either `invisible' or `display'.  BEG and END are 0-indices
delimiting S."
  (let ((width 0)
	(cursor beg))
    (while (setq beg (text-property-not-all beg end property nil s))
      (let* ((next (next-single-property-change beg property s end))
	     (props (text-properties-at beg s))
	     (spec (plist-get props property))
	     (value
	      (pcase property
		(`invisible
		 ;; If `invisible' property in PROPS means text is to
		 ;; be invisible, return 0.  Otherwise return nil so
		 ;; as to resume search.
		 (and (or (eq t buffer-invisibility-spec)
			  (assoc-string spec buffer-invisibility-spec))
		      0))
		(`display
		 (pcase spec
		   (`nil nil)
		   (`(space . ,props)
		    (let ((width (plist-get props :width)))
		      (and (wholenump width) width)))
		   (`(image . ,_)
		    (ceiling (car (image-size spec))))
		   ((pred stringp)
		    ;; Displayed string could contain invisible parts,
		    ;; but no nested display.
		    (org--string-from-props spec 'invisible 0 (length spec)))
		   (_
		    ;; Un-handled `display' value.  Ignore it.
		    ;; Consider the original string instead.
		    nil)))
		(_ (error "Unknown property: %S" property)))))
	(when value
	  (cl-incf width
		   ;; When looking for `display' parts, we still need
		   ;; to look for `invisible' property elsewhere.
		   (+ (cond ((eq property 'display)
			     (org--string-from-props s 'invisible cursor beg))
			    ((= cursor beg) 0)
			    (t (string-width (substring s cursor beg))))
		      value))
	  (setq cursor next))
	(setq beg next)))
    (+ width
       ;; Look for `invisible' property in the last part of the
       ;; string.  See above.
       (cond ((eq property 'display)
	      (org--string-from-props s 'invisible cursor end))
	     ((= cursor end) 0)
	     (t (string-width (substring s cursor end)))))))

(defun org-string-width (string)
  "Return width of STRING when displayed in the current buffer.
Unlike `string-width', this function takes into consideration
`invisible' and `display' text properties.  It supports the
latter in a limited way, mostly for combinations used in Org.
Results may be off sometimes if it cannot handle a given
`display' value."
  (org--string-from-props string 'display 0 (length string)))

(defun org-not-nil (v)
  "If V not nil, and also not the string \"nil\", then return V.
Otherwise return nil."
  (and v (not (equal v "nil")) v))

(defun org-unbracket-string (pre post string)
  "Remove PRE/POST from the beginning/end of STRING.
Both PRE and POST must be pre-/suffixes of STRING, or neither is
removed.  Return the new string.  If STRING is nil, return nil."
  (declare (indent 2))
  (and string
       (if (and (string-prefix-p pre string)
		(string-suffix-p post string))
	   (substring string (length pre) (- (length post)))
	 string)))

(defun org-strip-quotes (string)
  "Strip double quotes from around STRING, if applicable.
If STRING is nil, return nil."
  (org-unbracket-string "\"" "\"" string))

(defsubst org-current-line-string (&optional to-here)
  "Return current line, as a string.
If optional argument TO-HERE is non-nil, return string from
beginning of line up to point."
  (buffer-substring (line-beginning-position)
		    (if to-here (point) (line-end-position))))

(defun org-shorten-string (s maxlength)
  "Shorten string S so that it is no longer than MAXLENGTH characters.
If the string is shorter or has length MAXLENGTH, just return the
original string.  If it is longer, the functions finds a space in the
string, breaks this string off at that locations and adds three dots
as ellipsis.  Including the ellipsis, the string will not be longer
than MAXLENGTH.  If finding a good breaking point in the string does
not work, the string is just chopped off in the middle of a word
if necessary."
  (if (<= (length s) maxlength)
      s
    (let* ((n (max (- maxlength 4) 1))
	   (re (concat "\\`\\(.\\{1," (int-to-string n) "\\}[^ ]\\)\\([ ]\\|\\'\\)")))
      (if (string-match re s)
	  (concat (match-string 1 s) "...")
	(concat (substring s 0 (max (- maxlength 3) 0)) "...")))))

(defun org-remove-tabs (s &optional width)
  "Replace tabulators in S with spaces.
Assumes that s is a single line, starting in column 0."
  (setq width (or width tab-width))
  (while (string-match "\t" s)
    (setq s (replace-match
	     (make-string
	      (- (* width (/ (+ (match-beginning 0) width) width))
		 (match-beginning 0)) ?\ )
	     t t s)))
  s)

(defun org-wrap (string &optional width lines)
  "Wrap string to either a number of lines, or a width in characters.
If WIDTH is non-nil, the string is wrapped to that width, however many lines
that costs.  If there is a word longer than WIDTH, the text is actually
wrapped to the length of that word.
IF WIDTH is nil and LINES is non-nil, the string is forced into at most that
many lines, whatever width that takes.
The return value is a list of lines, without newlines at the end."
  (let* ((words (split-string string))
	 (maxword (apply 'max (mapcar 'org-string-width words)))
	 w ll)
    (cond (width
	   (org--do-wrap words (max maxword width)))
	  (lines
	   (setq w maxword)
	   (setq ll (org--do-wrap words maxword))
	   (if (<= (length ll) lines)
	       ll
	     (setq ll words)
	     (while (> (length ll) lines)
	       (setq w (1+ w))
	       (setq ll (org--do-wrap words w)))
	     ll))
	  (t (error "Cannot wrap this")))))

(defun org--do-wrap (words width)
  "Create lines of maximum width WIDTH (in characters) from word list WORDS."
  (let (lines line)
    (while words
      (setq line (pop words))
      (while (and words (< (+ (length line) (length (car words))) width))
	(setq line (concat line " " (pop words))))
      (setq lines (push line lines)))
    (nreverse lines)))

(defun org-remove-indentation (code &optional n)
  "Remove maximum common indentation in string CODE and return it.
N may optionally be the number of columns to remove.  Return CODE
as-is if removal failed."
  (with-temp-buffer
    (insert code)
    (if (org-do-remove-indentation n) (buffer-string) code)))

(defun org-fill-template (template alist)
  "Find each %key of ALIST in TEMPLATE and replace it."
  (let ((case-fold-search nil))
    (dolist (entry (sort (copy-sequence alist)
                         (lambda (a b) (< (length (car a)) (length (car b))))))
      (setq template
	    (replace-regexp-in-string
	     (concat "%" (regexp-quote (car entry)))
	     (or (cdr entry) "") template t t)))
    template))

(defun org-replace-escapes (string table)
  "Replace %-escapes in STRING with values in TABLE.
TABLE is an association list with keys like \"%a\" and string values.
The sequences in STRING may contain normal field width and padding information,
for example \"%-5s\".  Replacements happen in the sequence given by TABLE,
so values can contain further %-escapes if they are define later in TABLE."
  (let ((tbl (copy-alist table))
	(case-fold-search nil)
        (pchg 0)
        re rpl)
    (dolist (e tbl)
      (setq re (concat "%-?[0-9.]*" (substring (car e) 1)))
      (when (and (cdr e) (string-match re (cdr e)))
        (let ((sref (substring (cdr e) (match-beginning 0) (match-end 0)))
              (safe "SREF"))
          (add-text-properties 0 3 (list 'sref sref) safe)
          (setcdr e (replace-match safe t t (cdr e)))))
      (while (string-match re string)
        (setq rpl (format (concat (substring (match-string 0 string) 0 -1) "s")
                          (cdr e)))
        (setq string (replace-match rpl t t string))))
    (while (setq pchg (next-property-change pchg string))
      (let ((sref (get-text-property pchg 'sref string)))
	(when (and sref (string-match "SREF" string pchg))
	  (setq string (replace-match sref t t string)))))
    string))


;;; Text properties

(defconst org-rm-props '(invisible t face t keymap t intangible t mouse-face t
				   rear-nonsticky t mouse-map t fontified t
				   org-emphasis t)
  "Properties to remove when a string without properties is wanted.")

(defsubst org-no-properties (s &optional restricted)
  "Remove all text properties from string S.
When RESTRICTED is non-nil, only remove the properties listed
in `org-rm-props'."
  (if restricted (remove-text-properties 0 (length s) org-rm-props s)
    (set-text-properties 0 (length s) nil s))
  s)
(defun org-add-props (string plist &rest props)
  "Add text properties to entire string, from beginning to end.
PLIST may be a list of properties, PROPS are individual properties and values
that will be added to PLIST.  Returns the string that was modified."
  (declare (indent 2))
  (add-text-properties
   0 (length string) (if props (append plist props) plist) string)
  string)

(defun org-make-parameter-alist (flat)
  "Return alist based on FLAT.
FLAT is a list with alternating symbol names and values.  The
returned alist is a list of lists with the symbol name in car and
the value in cdr."
  (when flat
    (cons (list (car flat) (cadr flat))
	  (org-make-parameter-alist (cddr flat)))))

(defsubst org-get-at-bol (property)
  "Get text property PROPERTY at the beginning of line."
  (get-text-property (point-at-bol) property))

(defun org-get-at-eol (property n)
  "Get text property PROPERTY at the end of line less N characters."
  (get-text-property (- (point-at-eol) n) property))

(defun org-find-text-property-in-string (prop s)
  "Return the first non-nil value of property PROP in string S."
  (or (get-text-property 0 prop s)
      (get-text-property (or (next-single-property-change 0 prop s) 0)
			 prop s)))

(defun org-invisible-p (&optional pos)
  "Non-nil if the character after POS is invisible.
If POS is nil, use `point' instead."
  (get-char-property (or pos (point)) 'invisible))

(defun org-truely-invisible-p ()
  "Check if point is at a character currently not visible.
This version does not only check the character property, but also
`visible-mode'."
  (unless (bound-and-true-p visible-mode)
    (org-invisible-p)))

(defun org-invisible-p2 ()
  "Check if point is at a character currently not visible.
If the point is at EOL (and not at the beginning of a buffer too),
move it back by one char before doing this check."
  (save-excursion
    (when (and (eolp) (not (bobp)))
      (backward-char 1))
    (org-invisible-p)))


;;; Time

(defun org-2ft (s)
  "Convert S to a floating point time.
If S is already a number, just return it.  If it is a string,
parse it as a time string and apply `float-time' to it.  If S is
nil, just return 0."
  (cond
   ((numberp s) s)
   ((stringp s)
    (condition-case nil
	(float-time (apply #'encode-time (org-parse-time-string s)))
      (error 0)))
   (t 0)))

(defun org-time= (a b)
  (let ((a (org-2ft a))
	(b (org-2ft b)))
    (and (> a 0) (> b 0) (= a b))))

(defun org-time< (a b)
  (let ((a (org-2ft a))
	(b (org-2ft b)))
    (and (> a 0) (> b 0) (< a b))))

(defun org-time<= (a b)
  (let ((a (org-2ft a))
	(b (org-2ft b)))
    (and (> a 0) (> b 0) (<= a b))))

(defun org-time> (a b)
  (let ((a (org-2ft a))
	(b (org-2ft b)))
    (and (> a 0) (> b 0) (> a b))))

(defun org-time>= (a b)
  (let ((a (org-2ft a))
	(b (org-2ft b)))
    (and (> a 0) (> b 0) (>= a b))))

(defun org-time<> (a b)
  (let ((a (org-2ft a))
	(b (org-2ft b)))
    (and (> a 0) (> b 0) (\= a b))))

(defun org-parse-time-string (s &optional nodefault)
  "Parse Org time string S.

If time is not given, defaults to 0:00.  However, with optional
NODEFAULT, hour and minute fields are nil if not given.

Throw an error if S does not contain a valid Org time string.
Note that the first match for YYYY-MM-DD will be used (e.g.,
\"-52000-02-03\" will be taken as \"2000-02-03\").

This should be a lot faster than the `parse-time-string'."
  (unless (string-match org-ts-regexp0 s)
    (error "Not an Org time string: %s" s))
  (list 0
	(cond ((match-beginning 8) (string-to-number (match-string 8 s)))
	      (nodefault nil)
	      (t 0))
	(cond ((match-beginning 7) (string-to-number (match-string 7 s)))
	      (nodefault nil)
	      (t 0))
	(string-to-number (match-string 4 s))
	(string-to-number (match-string 3 s))
	(string-to-number (match-string 2 s))
	nil nil nil))

(defun org-matcher-time (s)
  "Interpret a time comparison value S as a floating point time.

S can be an Org time stamp, a modifier, e.g., \"<+2d>\", or the
following special strings: \"<now>\", \"<today>\",
\"<tomorrow>\", and \"<yesterday>\".

Return 0. if S is not recognized as a valid value."
  (let ((today (float-time (apply #'encode-time
				  (append '(0 0 0) (nthcdr 3 (decode-time)))))))
    (save-match-data
      (cond
       ((string= s "<now>") (float-time))
       ((string= s "<today>") today)
       ((string= s "<tomorrow>") (+ 86400.0 today))
       ((string= s "<yesterday>") (- today 86400.0))
       ((string-match "\\`<\\([-+][0-9]+\\)\\([hdwmy]\\)>\\'" s)
	(+ today
	   (* (string-to-number (match-string 1 s))
	      (cdr (assoc (match-string 2 s)
			  '(("d" . 86400.0)   ("w" . 604800.0)
			    ("m" . 2678400.0) ("y" . 31557600.0)))))))
       ((string-match org-ts-regexp0 s) (org-2ft s))
       (t 0.)))))


Rasmus's avatar
Rasmus committed
1186

Bastien Guerry's avatar
Bastien Guerry committed
1187
(provide 'org-macs)
1188

1189
;;; org-macs.el ends here