ox-ascii: Handle custom export functions for links
[org-mode/org-kjn.git] / lisp / ox-ascii.el
blob820d763c17bed4647bd8771e6aa72e7d81eb7a38
1 ;;; ox-ascii.el --- ASCII Back-End for Org Export Engine
3 ;; Copyright (C) 2012-2014 Free Software Foundation, Inc.
5 ;; Author: Nicolas Goaziou <n.goaziou at gmail dot com>
6 ;; Keywords: outlines, hypermedia, calendar, wp
8 ;; This file is part of GNU Emacs.
10 ;; GNU Emacs is free software: you can redistribute it and/or modify
11 ;; it under the terms of the GNU General Public License as published by
12 ;; the Free Software Foundation, either version 3 of the License, or
13 ;; (at your option) any later version.
15 ;; GNU Emacs is distributed in the hope that it will be useful,
16 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
17 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 ;; GNU General Public License for more details.
20 ;; You should have received a copy of the GNU General Public License
21 ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
23 ;;; Commentary:
25 ;; This library implements an ASCII back-end for Org generic exporter.
26 ;; See Org manual for more information.
28 ;;; Code:
30 (eval-when-compile (require 'cl))
31 (require 'ox)
32 (require 'ox-publish)
34 (declare-function aa2u "ext:ascii-art-to-unicode" ())
36 ;;; Define Back-End
38 ;; The following setting won't allow to modify preferred charset
39 ;; through a buffer keyword or an option item, but, since the property
40 ;; will appear in communication channel nonetheless, it allows to
41 ;; override `org-ascii-charset' variable on the fly by the ext-plist
42 ;; mechanism.
44 ;; We also install a filter for headlines and sections, in order to
45 ;; control blank lines separating them in output string.
47 (org-export-define-backend 'ascii
48 '((bold . org-ascii-bold)
49 (center-block . org-ascii-center-block)
50 (clock . org-ascii-clock)
51 (code . org-ascii-code)
52 (comment . (lambda (&rest args) ""))
53 (comment-block . (lambda (&rest args) ""))
54 (drawer . org-ascii-drawer)
55 (dynamic-block . org-ascii-dynamic-block)
56 (entity . org-ascii-entity)
57 (example-block . org-ascii-example-block)
58 (export-block . org-ascii-export-block)
59 (export-snippet . org-ascii-export-snippet)
60 (fixed-width . org-ascii-fixed-width)
61 (footnote-reference . org-ascii-footnote-reference)
62 (headline . org-ascii-headline)
63 (horizontal-rule . org-ascii-horizontal-rule)
64 (inline-src-block . org-ascii-inline-src-block)
65 (inlinetask . org-ascii-inlinetask)
66 (inner-template . org-ascii-inner-template)
67 (italic . org-ascii-italic)
68 (item . org-ascii-item)
69 (keyword . org-ascii-keyword)
70 (latex-environment . org-ascii-latex-environment)
71 (latex-fragment . org-ascii-latex-fragment)
72 (line-break . org-ascii-line-break)
73 (link . org-ascii-link)
74 (node-property . org-ascii-node-property)
75 (paragraph . org-ascii-paragraph)
76 (plain-list . org-ascii-plain-list)
77 (plain-text . org-ascii-plain-text)
78 (planning . org-ascii-planning)
79 (property-drawer . org-ascii-property-drawer)
80 (quote-block . org-ascii-quote-block)
81 (radio-target . org-ascii-radio-target)
82 (section . org-ascii-section)
83 (special-block . org-ascii-special-block)
84 (src-block . org-ascii-src-block)
85 (statistics-cookie . org-ascii-statistics-cookie)
86 (strike-through . org-ascii-strike-through)
87 (subscript . org-ascii-subscript)
88 (superscript . org-ascii-superscript)
89 (table . org-ascii-table)
90 (table-cell . org-ascii-table-cell)
91 (table-row . org-ascii-table-row)
92 (target . org-ascii-target)
93 (template . org-ascii-template)
94 (timestamp . org-ascii-timestamp)
95 (underline . org-ascii-underline)
96 (verbatim . org-ascii-verbatim)
97 (verse-block . org-ascii-verse-block))
98 :export-block "ASCII"
99 :menu-entry
100 '(?t "Export to Plain Text"
101 ((?A "As ASCII buffer"
102 (lambda (a s v b)
103 (org-ascii-export-as-ascii a s v b '(:ascii-charset ascii))))
104 (?a "As ASCII file"
105 (lambda (a s v b)
106 (org-ascii-export-to-ascii a s v b '(:ascii-charset ascii))))
107 (?L "As Latin1 buffer"
108 (lambda (a s v b)
109 (org-ascii-export-as-ascii a s v b '(:ascii-charset latin1))))
110 (?l "As Latin1 file"
111 (lambda (a s v b)
112 (org-ascii-export-to-ascii a s v b '(:ascii-charset latin1))))
113 (?U "As UTF-8 buffer"
114 (lambda (a s v b)
115 (org-ascii-export-as-ascii a s v b '(:ascii-charset utf-8))))
116 (?u "As UTF-8 file"
117 (lambda (a s v b)
118 (org-ascii-export-to-ascii a s v b '(:ascii-charset utf-8))))))
119 :filters-alist '((:filter-headline . org-ascii-filter-headline-blank-lines)
120 (:filter-parse-tree org-ascii-filter-paragraph-spacing
121 org-ascii-filter-comment-spacing)
122 (:filter-section . org-ascii-filter-headline-blank-lines))
123 :options-alist
124 '((:ascii-bullets nil nil org-ascii-bullets)
125 (:ascii-caption-above nil nil org-ascii-caption-above)
126 (:ascii-charset nil nil org-ascii-charset)
127 (:ascii-global-margin nil nil org-ascii-global-margin)
128 (:ascii-format-drawer-function nil nil org-ascii-format-drawer-function)
129 (:ascii-format-inlinetask-function
130 nil nil org-ascii-format-inlinetask-function)
131 (:ascii-headline-spacing nil nil org-ascii-headline-spacing)
132 (:ascii-indented-line-width nil nil org-ascii-indented-line-width)
133 (:ascii-inlinetask-width nil nil org-ascii-inlinetask-width)
134 (:ascii-inner-margin nil nil org-ascii-inner-margin)
135 (:ascii-links-to-notes nil nil org-ascii-links-to-notes)
136 (:ascii-list-margin nil nil org-ascii-list-margin)
137 (:ascii-paragraph-spacing nil nil org-ascii-paragraph-spacing)
138 (:ascii-quote-margin nil nil org-ascii-quote-margin)
139 (:ascii-table-keep-all-vertical-lines
140 nil nil org-ascii-table-keep-all-vertical-lines)
141 (:ascii-table-use-ascii-art nil nil org-ascii-table-use-ascii-art)
142 (:ascii-table-widen-columns nil nil org-ascii-table-widen-columns)
143 (:ascii-text-width nil nil org-ascii-text-width)
144 (:ascii-underline nil nil org-ascii-underline)
145 (:ascii-verbatim-format nil nil org-ascii-verbatim-format)))
149 ;;; User Configurable Variables
151 (defgroup org-export-ascii nil
152 "Options for exporting Org mode files to ASCII."
153 :tag "Org Export ASCII"
154 :group 'org-export)
156 (defcustom org-ascii-text-width 72
157 "Maximum width of exported text.
158 This number includes margin size, as set in
159 `org-ascii-global-margin'."
160 :group 'org-export-ascii
161 :version "24.4"
162 :package-version '(Org . "8.0")
163 :type 'integer)
165 (defcustom org-ascii-global-margin 0
166 "Width of the left margin, in number of characters."
167 :group 'org-export-ascii
168 :version "24.4"
169 :package-version '(Org . "8.0")
170 :type 'integer)
172 (defcustom org-ascii-inner-margin 2
173 "Width of the inner margin, in number of characters.
174 Inner margin is applied between each headline."
175 :group 'org-export-ascii
176 :version "24.4"
177 :package-version '(Org . "8.0")
178 :type 'integer)
180 (defcustom org-ascii-quote-margin 6
181 "Width of margin used for quoting text, in characters.
182 This margin is applied on both sides of the text."
183 :group 'org-export-ascii
184 :version "24.4"
185 :package-version '(Org . "8.0")
186 :type 'integer)
188 (defcustom org-ascii-list-margin 0
189 "Width of margin used for plain lists, in characters.
190 This margin applies to top level list only, not to its
191 sub-lists."
192 :group 'org-export-ascii
193 :version "25.1"
194 :package-version '(Org . "8.3")
195 :type 'integer)
197 (defcustom org-ascii-inlinetask-width 30
198 "Width of inline tasks, in number of characters.
199 This number ignores any margin."
200 :group 'org-export-ascii
201 :version "24.4"
202 :package-version '(Org . "8.0")
203 :type 'integer)
205 (defcustom org-ascii-headline-spacing '(1 . 2)
206 "Number of blank lines inserted around headlines.
208 This variable can be set to a cons cell. In that case, its car
209 represents the number of blank lines present before headline
210 contents whereas its cdr reflects the number of blank lines after
211 contents.
213 A nil value replicates the number of blank lines found in the
214 original Org buffer at the same place."
215 :group 'org-export-ascii
216 :version "24.4"
217 :package-version '(Org . "8.0")
218 :type '(choice
219 (const :tag "Replicate original spacing" nil)
220 (cons :tag "Set an uniform spacing"
221 (integer :tag "Number of blank lines before contents")
222 (integer :tag "Number of blank lines after contents"))))
224 (defcustom org-ascii-indented-line-width 'auto
225 "Additional indentation width for the first line in a paragraph.
226 If the value is an integer, indent the first line of each
227 paragraph by this width, unless it is located at the beginning of
228 a section, in which case indentation is removed from that line.
229 If it is the symbol `auto' preserve indentation from original
230 document."
231 :group 'org-export-ascii
232 :version "24.4"
233 :package-version '(Org . "8.0")
234 :type '(choice
235 (integer :tag "Number of white spaces characters")
236 (const :tag "Preserve original width" auto)))
238 (defcustom org-ascii-paragraph-spacing 'auto
239 "Number of white lines between paragraphs.
240 If the value is an integer, add this number of blank lines
241 between contiguous paragraphs. If is it the symbol `auto', keep
242 the same number of blank lines as in the original document."
243 :group 'org-export-ascii
244 :version "24.4"
245 :package-version '(Org . "8.0")
246 :type '(choice
247 (integer :tag "Number of blank lines")
248 (const :tag "Preserve original spacing" auto)))
250 (defcustom org-ascii-charset 'ascii
251 "The charset allowed to represent various elements and objects.
252 Possible values are:
253 `ascii' Only use plain ASCII characters
254 `latin1' Include Latin-1 characters
255 `utf-8' Use all UTF-8 characters"
256 :group 'org-export-ascii
257 :version "24.4"
258 :package-version '(Org . "8.0")
259 :type '(choice
260 (const :tag "ASCII" ascii)
261 (const :tag "Latin-1" latin1)
262 (const :tag "UTF-8" utf-8)))
264 (defcustom org-ascii-underline '((ascii ?= ?~ ?-)
265 (latin1 ?= ?~ ?-)
266 (utf-8 ?═ ?─ ?╌ ?┄ ?┈))
267 "Characters for underlining headings in ASCII export.
269 Alist whose key is a symbol among `ascii', `latin1' and `utf-8'
270 and whose value is a list of characters.
272 For each supported charset, this variable associates a sequence
273 of underline characters. In a sequence, the characters will be
274 used in order for headlines level 1, 2, ... If no character is
275 available for a given level, the headline won't be underlined."
276 :group 'org-export-ascii
277 :version "24.4"
278 :package-version '(Org . "8.0")
279 :type '(list
280 (cons :tag "Underline characters sequence"
281 (const :tag "ASCII charset" ascii)
282 (repeat character))
283 (cons :tag "Underline characters sequence"
284 (const :tag "Latin-1 charset" latin1)
285 (repeat character))
286 (cons :tag "Underline characters sequence"
287 (const :tag "UTF-8 charset" utf-8)
288 (repeat character))))
290 (defcustom org-ascii-bullets '((ascii ?* ?+ ?-)
291 (latin1 ?§ ?¶)
292 (utf-8 ?◊))
293 "Bullet characters for headlines converted to lists in ASCII export.
295 Alist whose key is a symbol among `ascii', `latin1' and `utf-8'
296 and whose value is a list of characters.
298 The first character is used for the first level considered as low
299 level, and so on. If there are more levels than characters given
300 here, the list will be repeated.
302 Note that this variable doesn't affect plain lists
303 representation."
304 :group 'org-export-ascii
305 :version "24.4"
306 :package-version '(Org . "8.0")
307 :type '(list
308 (cons :tag "Bullet characters for low level headlines"
309 (const :tag "ASCII charset" ascii)
310 (repeat character))
311 (cons :tag "Bullet characters for low level headlines"
312 (const :tag "Latin-1 charset" latin1)
313 (repeat character))
314 (cons :tag "Bullet characters for low level headlines"
315 (const :tag "UTF-8 charset" utf-8)
316 (repeat character))))
318 (defcustom org-ascii-links-to-notes t
319 "Non-nil means convert links to notes before the next headline.
320 When nil, the link will be exported in place. If the line
321 becomes long in this way, it will be wrapped."
322 :group 'org-export-ascii
323 :version "24.4"
324 :package-version '(Org . "8.0")
325 :type 'boolean)
327 (defcustom org-ascii-table-keep-all-vertical-lines nil
328 "Non-nil means keep all vertical lines in ASCII tables.
329 When nil, vertical lines will be removed except for those needed
330 for column grouping."
331 :group 'org-export-ascii
332 :version "24.4"
333 :package-version '(Org . "8.0")
334 :type 'boolean)
336 (defcustom org-ascii-table-widen-columns t
337 "Non-nil means widen narrowed columns for export.
338 When nil, narrowed columns will look in ASCII export just like in
339 Org mode, i.e. with \"=>\" as ellipsis."
340 :group 'org-export-ascii
341 :version "24.4"
342 :package-version '(Org . "8.0")
343 :type 'boolean)
345 (defcustom org-ascii-table-use-ascii-art nil
346 "Non-nil means table.el tables are turned into ascii-art.
348 It only makes sense when export charset is `utf-8'. It is nil by
349 default since it requires ascii-art-to-unicode.el package. You
350 can download it here:
352 http://gnuvola.org/software/j/aa2u/ascii-art-to-unicode.el."
353 :group 'org-export-ascii
354 :version "24.4"
355 :package-version '(Org . "8.0")
356 :type 'boolean)
358 (defcustom org-ascii-caption-above nil
359 "When non-nil, place caption string before the element.
360 Otherwise, place it right after it."
361 :group 'org-export-ascii
362 :version "24.4"
363 :package-version '(Org . "8.0")
364 :type 'boolean)
366 (defcustom org-ascii-verbatim-format "`%s'"
367 "Format string used for verbatim text and inline code."
368 :group 'org-export-ascii
369 :version "24.4"
370 :package-version '(Org . "8.0")
371 :type 'string)
373 (defcustom org-ascii-format-drawer-function
374 (lambda (name contents width) contents)
375 "Function called to format a drawer in ASCII.
377 The function must accept three parameters:
378 NAME the drawer name, like \"LOGBOOK\"
379 CONTENTS the contents of the drawer.
380 WIDTH the text width within the drawer.
382 The function should return either the string to be exported or
383 nil to ignore the drawer.
385 The default value simply returns the value of CONTENTS."
386 :group 'org-export-ascii
387 :version "24.4"
388 :package-version '(Org . "8.0")
389 :type 'function)
391 (defcustom org-ascii-format-inlinetask-function
392 'org-ascii-format-inlinetask-default
393 "Function called to format an inlinetask in ASCII.
395 The function must accept nine parameters:
396 TODO the todo keyword, as a string
397 TODO-TYPE the todo type, a symbol among `todo', `done' and nil.
398 PRIORITY the inlinetask priority, as a string
399 NAME the inlinetask name, as a string.
400 TAGS the inlinetask tags, as a list of strings.
401 CONTENTS the contents of the inlinetask, as a string.
402 WIDTH the width of the inlinetask, as a number.
403 INLINETASK the inlinetask itself.
404 INFO the info channel.
406 The function should return either the string to be exported or
407 nil to ignore the inline task."
408 :group 'org-export-ascii
409 :version "24.4"
410 :package-version '(Org . "8.3")
411 :type 'function)
415 ;;; Internal Functions
417 ;; Internal functions fall into three categories.
419 ;; The first one is about text formatting. The core functions are
420 ;; `org-ascii--current-text-width' and
421 ;; `org-ascii--current-justification', which determine, respectively,
422 ;; the current text width allowed to a given element and its expected
423 ;; justification. Once this information is known,
424 ;; `org-ascii--fill-string', `org-ascii--justify-lines',
425 ;; `org-ascii--justify-element' `org-ascii--box-string' and
426 ;; `org-ascii--indent-string' can operate on a given output string.
427 ;; In particular, justification happens at the regular (i.e.,
428 ;; non-greater) element level, which means that when the exporting
429 ;; process reaches a container (e.g., a center block) content are
430 ;; already justified.
432 ;; The second category contains functions handling elements listings,
433 ;; triggered by "#+TOC:" keyword. As such, `org-ascii--build-toc'
434 ;; returns a complete table of contents, `org-ascii--list-listings'
435 ;; returns a list of referenceable src-block elements, and
436 ;; `org-ascii--list-tables' does the same for table elements.
438 ;; The third category includes general helper functions.
439 ;; `org-ascii--build-title' creates the title for a given headline
440 ;; or inlinetask element. `org-ascii--build-caption' returns the
441 ;; caption string associated to a table or a src-block.
442 ;; `org-ascii--describe-links' creates notes about links for
443 ;; insertion at the end of a section. It uses
444 ;; `org-ascii--unique-links' to get the list of links to describe.
445 ;; Eventually, `org-ascii--translate' translates a string according
446 ;; to language and charset specification.
449 (defun org-ascii--fill-string (s text-width info &optional justify)
450 "Fill a string with specified text-width and return it.
452 S is the string being filled. TEXT-WIDTH is an integer
453 specifying maximum length of a line. INFO is the plist used as
454 a communication channel.
456 Optional argument JUSTIFY can specify any type of justification
457 among `left', `center', `right' or `full'. A nil value is
458 equivalent to `left'. For a justification that doesn't also fill
459 string, see `org-ascii--justify-lines' and
460 `org-ascii--justify-block'.
462 Return nil if S isn't a string."
463 (when (stringp s)
464 (let ((double-space-p sentence-end-double-space))
465 (with-temp-buffer
466 (let ((fill-column text-width)
467 (use-hard-newlines t)
468 (sentence-end-double-space double-space-p))
469 (insert (if (plist-get info :preserve-breaks)
470 (replace-regexp-in-string "\n" hard-newline s)
472 (fill-region (point-min) (point-max) justify))
473 (buffer-string)))))
475 (defun org-ascii--justify-lines (s text-width how)
476 "Justify all lines in string S.
477 TEXT-WIDTH is an integer specifying maximum length of a line.
478 HOW determines the type of justification: it can be `left',
479 `right', `full' or `center'."
480 (with-temp-buffer
481 (insert s)
482 (goto-char (point-min))
483 (let ((fill-column text-width)
484 ;; Disable `adaptive-fill-mode' so it doesn't prevent
485 ;; filling lines matching `adaptive-fill-regexp'.
486 (adaptive-fill-mode nil))
487 (while (< (point) (point-max))
488 (justify-current-line how)
489 (forward-line)))
490 (buffer-string)))
492 (defun org-ascii--justify-element (contents element info)
493 "Justify CONTENTS of ELEMENT.
494 INFO is a plist used as a communication channel. Justification
495 is done according to the type of element. More accurately,
496 paragraphs are filled and other elements are justified as blocks,
497 that is according to the widest non blank line in CONTENTS."
498 (if (not (org-string-nw-p contents)) contents
499 (let ((text-width (org-ascii--current-text-width element info))
500 (how (org-ascii--current-justification element)))
501 (cond
502 ((eq (org-element-type element) 'paragraph)
503 ;; Paragraphs are treated specially as they need to be filled.
504 (org-ascii--fill-string contents text-width info how))
505 ((eq how 'left) contents)
506 (t (with-temp-buffer
507 (insert contents)
508 (goto-char (point-min))
509 (catch 'exit
510 (let ((max-width 0))
511 ;; Compute maximum width. Bail out if it is greater
512 ;; than page width, since no justification is
513 ;; possible.
514 (save-excursion
515 (while (not (eobp))
516 (unless (org-looking-at-p "[ \t]*$")
517 (end-of-line)
518 (let ((column (current-column)))
519 (cond
520 ((>= column text-width) (throw 'exit contents))
521 ((> column max-width) (setq max-width column)))))
522 (forward-line)))
523 ;; Justify every line according to TEXT-WIDTH and
524 ;; MAX-WIDTH.
525 (let ((offset (/ (- text-width max-width)
526 (if (eq how 'right) 1 2))))
527 (if (zerop offset) (throw 'exit contents)
528 (while (not (eobp))
529 (unless (org-looking-at-p "[ \t]*$")
530 (org-indent-to-column offset))
531 (forward-line)))))
532 (buffer-string))))))))
534 (defun org-ascii--indent-string (s width)
535 "Indent string S by WIDTH white spaces.
536 Empty lines are not indented."
537 (when (stringp s)
538 (replace-regexp-in-string
539 "\\(^\\)[ \t]*\\S-" (make-string width ?\s) s nil nil 1)))
541 (defun org-ascii--box-string (s info)
542 "Return string S with a partial box to its left.
543 INFO is a plist used as a communication channel."
544 (let ((utf8p (eq (plist-get info :ascii-charset) 'utf-8)))
545 (format (if utf8p "┌────\n%s\n└────" ",----\n%s\n`----")
546 (replace-regexp-in-string
547 "^" (if utf8p "│ " "| ")
548 ;; Remove last newline character.
549 (replace-regexp-in-string "\n[ \t]*\\'" "" s)))))
551 (defun org-ascii--current-text-width (element info)
552 "Return maximum text width for ELEMENT's contents.
553 INFO is a plist used as a communication channel."
554 (case (org-element-type element)
555 ;; Elements with an absolute width: `headline' and `inlinetask'.
556 (inlinetask (plist-get info :ascii-inlinetask-width))
557 (headline
558 (- (plist-get info :ascii-text-width)
559 (let ((low-level-rank (org-export-low-level-p element info)))
560 (if low-level-rank (* low-level-rank 2)
561 (plist-get info :ascii-global-margin)))))
562 ;; Elements with a relative width: store maximum text width in
563 ;; TOTAL-WIDTH.
564 (otherwise
565 (let* ((genealogy (org-element-lineage element nil t))
566 ;; Total width is determined by the presence, or not, of an
567 ;; inline task among ELEMENT parents.
568 (total-width
569 (if (loop for parent in genealogy
570 thereis (eq (org-element-type parent) 'inlinetask))
571 (plist-get info :ascii-inlinetask-width)
572 ;; No inlinetask: Remove global margin from text width.
573 (- (plist-get info :ascii-text-width)
574 (plist-get info :ascii-global-margin)
575 (let ((parent (org-export-get-parent-headline element)))
576 ;; Inner margin doesn't apply to text before first
577 ;; headline.
578 (if (not parent) 0
579 (let ((low-level-rank
580 (org-export-low-level-p parent info)))
581 ;; Inner margin doesn't apply to contents of
582 ;; low level headlines, since they've got their
583 ;; own indentation mechanism.
584 (if low-level-rank (* low-level-rank 2)
585 (plist-get info :ascii-inner-margin)))))))))
586 (- total-width
587 ;; Each `quote-block' and `verse-block' above narrows text
588 ;; width by twice the standard margin size.
589 (+ (* (loop for parent in genealogy
590 when (memq (org-element-type parent)
591 '(quote-block verse-block))
592 count parent)
593 2 (plist-get info :ascii-quote-margin))
594 ;; Apply list margin once per "top-level" plain-list
595 ;; containing current line
596 (* (let ((count 0))
597 (dolist (e genealogy count)
598 (and (eq (org-element-type e) 'plain-list)
599 (not (eq (org-element-type (org-export-get-parent e))
600 'item))
601 (incf count))))
602 (plist-get info :ascii-list-margin))
603 ;; Text width within a plain-list is restricted by
604 ;; indentation of current item. If that's the case,
605 ;; compute it with the help of `:structure' property from
606 ;; parent item, if any.
607 (let ((parent-item
608 (if (eq (org-element-type element) 'item) element
609 (loop for parent in genealogy
610 when (eq (org-element-type parent) 'item)
611 return parent))))
612 (if (not parent-item) 0
613 ;; Compute indentation offset of the current item,
614 ;; that is the sum of the difference between its
615 ;; indentation and the indentation of the top item in
616 ;; the list and current item bullet's length. Also
617 ;; remove checkbox length, and tag length (for
618 ;; description lists) or bullet length.
619 (let ((struct (org-element-property :structure parent-item))
620 (beg-item (org-element-property :begin parent-item)))
621 (+ (- (org-list-get-ind beg-item struct)
622 (org-list-get-ind
623 (org-list-get-top-point struct) struct))
624 (string-width (or (org-ascii--checkbox parent-item info)
625 ""))
626 (string-width
627 (or (org-list-get-tag beg-item struct)
628 (org-list-get-bullet beg-item struct)))))))))))))
630 (defun org-ascii--current-justification (element)
631 "Return expected justification for ELEMENT's contents.
632 Return value is a symbol among `left', `center', `right' and
633 `full'."
634 (let (justification)
635 (while (and (not justification)
636 (setq element (org-element-property :parent element)))
637 (case (org-element-type element)
638 (center-block (setq justification 'center))
639 (special-block
640 (let ((name (org-element-property :type element)))
641 (cond ((string= name "JUSTIFYRIGHT") (setq justification 'right))
642 ((string= name "JUSTIFYLEFT") (setq justification 'left)))))))
643 (or justification 'left)))
645 (defun org-ascii--build-title
646 (element info text-width &optional underline notags toc)
647 "Format ELEMENT title and return it.
649 ELEMENT is either an `headline' or `inlinetask' element. INFO is
650 a plist used as a communication channel. TEXT-WIDTH is an
651 integer representing the maximum length of a line.
653 When optional argument UNDERLINE is non-nil, underline title,
654 without the tags, according to `org-ascii-underline'
655 specifications.
657 If optional argument NOTAGS is non-nil, no tags will be added to
658 the title.
660 When optional argument TOC is non-nil, use optional title if
661 possible. It doesn't apply to `inlinetask' elements."
662 (let* ((headlinep (eq (org-element-type element) 'headline))
663 (numbers
664 ;; Numbering is specific to headlines.
665 (and headlinep (org-export-numbered-headline-p element info)
666 ;; All tests passed: build numbering string.
667 (concat
668 (mapconcat
669 'number-to-string
670 (org-export-get-headline-number element info) ".")
671 " ")))
672 (text
673 (org-trim
674 (org-export-data
675 (if (and toc headlinep) (org-export-get-alt-title element info)
676 (org-element-property :title element))
677 info)))
678 (todo
679 (and (plist-get info :with-todo-keywords)
680 (let ((todo (org-element-property :todo-keyword element)))
681 (and todo (concat (org-export-data todo info) " ")))))
682 (tags (and (not notags)
683 (plist-get info :with-tags)
684 (let ((tag-list (org-export-get-tags element info)))
685 (and tag-list
686 (format ":%s:"
687 (mapconcat 'identity tag-list ":"))))))
688 (priority
689 (and (plist-get info :with-priority)
690 (let ((char (org-element-property :priority element)))
691 (and char (format "(#%c) " char)))))
692 (first-part (concat numbers todo priority text)))
693 (concat
694 first-part
695 ;; Align tags, if any.
696 (when tags
697 (format
698 (format " %%%ds"
699 (max (- text-width (1+ (string-width first-part)))
700 (string-width tags)))
701 tags))
702 ;; Maybe underline text, if ELEMENT type is `headline' and an
703 ;; underline character has been defined.
704 (when (and underline headlinep)
705 (let ((under-char
706 (nth (1- (org-export-get-relative-level element info))
707 (cdr (assq (plist-get info :ascii-charset)
708 (plist-get info :ascii-underline))))))
709 (and under-char
710 (concat "\n"
711 (make-string (/ (string-width first-part)
712 (char-width under-char))
713 under-char))))))))
715 (defun org-ascii--has-caption-p (element info)
716 "Non-nil when ELEMENT has a caption affiliated keyword.
717 INFO is a plist used as a communication channel. This function
718 is meant to be used as a predicate for `org-export-get-ordinal'."
719 (org-element-property :caption element))
721 (defun org-ascii--build-caption (element info)
722 "Return caption string for ELEMENT, if applicable.
724 INFO is a plist used as a communication channel.
726 The caption string contains the sequence number of ELEMENT along
727 with its real caption. Return nil when ELEMENT has no affiliated
728 caption keyword."
729 (let ((caption (org-export-get-caption element)))
730 (when caption
731 ;; Get sequence number of current src-block among every
732 ;; src-block with a caption.
733 (let ((reference
734 (org-export-get-ordinal
735 element info nil 'org-ascii--has-caption-p))
736 (title-fmt (org-ascii--translate
737 (case (org-element-type element)
738 (table "Table %d:")
739 (src-block "Listing %d:"))
740 info)))
741 (org-ascii--fill-string
742 (concat (format title-fmt reference)
744 (org-export-data caption info))
745 (org-ascii--current-text-width element info) info)))))
747 (defun org-ascii--build-toc (info &optional n keyword)
748 "Return a table of contents.
750 INFO is a plist used as a communication channel.
752 Optional argument N, when non-nil, is an integer specifying the
753 depth of the table.
755 Optional argument KEYWORD specifies the TOC keyword, if any, from
756 which the table of contents generation has been initiated."
757 (let ((title (org-ascii--translate "Table of Contents" info)))
758 (concat
759 title "\n"
760 (make-string (string-width title)
761 (if (eq (plist-get info :ascii-charset) 'utf-8) ?─ ?_))
762 "\n\n"
763 (let ((text-width
764 (if keyword (org-ascii--current-text-width keyword info)
765 (- (plist-get info :ascii-text-width)
766 (plist-get info :ascii-global-margin)))))
767 (mapconcat
768 (lambda (headline)
769 (let* ((level (org-export-get-relative-level headline info))
770 (indent (* (1- level) 3)))
771 (concat
772 (unless (zerop indent) (concat (make-string (1- indent) ?.) " "))
773 (org-ascii--build-title
774 headline info (- text-width indent) nil
775 (or (not (plist-get info :with-tags))
776 (eq (plist-get info :with-tags) 'not-in-toc))
777 'toc))))
778 (org-export-collect-headlines info n) "\n")))))
780 (defun org-ascii--list-listings (keyword info)
781 "Return a list of listings.
783 KEYWORD is the keyword that initiated the list of listings
784 generation. INFO is a plist used as a communication channel."
785 (let ((title (org-ascii--translate "List of Listings" info)))
786 (concat
787 title "\n"
788 (make-string (string-width title)
789 (if (eq (plist-get info :ascii-charset) 'utf-8) ?─ ?_))
790 "\n\n"
791 (let ((text-width
792 (if keyword (org-ascii--current-text-width keyword info)
793 (- (plist-get info :ascii-text-width)
794 (plist-get info :ascii-global-margin))))
795 ;; Use a counter instead of retrieving ordinal of each
796 ;; src-block.
797 (count 0))
798 (mapconcat
799 (lambda (src-block)
800 ;; Store initial text so its length can be computed. This is
801 ;; used to properly align caption right to it in case of
802 ;; filling (like contents of a description list item).
803 (let* ((initial-text
804 (format (org-ascii--translate "Listing %d:" info)
805 (incf count)))
806 (initial-width (string-width initial-text)))
807 (concat
808 initial-text " "
809 (org-trim
810 (org-ascii--indent-string
811 (org-ascii--fill-string
812 ;; Use short name in priority, if available.
813 (let ((caption (or (org-export-get-caption src-block t)
814 (org-export-get-caption src-block))))
815 (org-export-data caption info))
816 (- text-width initial-width) info)
817 initial-width)))))
818 (org-export-collect-listings info) "\n")))))
820 (defun org-ascii--list-tables (keyword info)
821 "Return a list of tables.
823 KEYWORD is the keyword that initiated the list of tables
824 generation. INFO is a plist used as a communication channel."
825 (let ((title (org-ascii--translate "List of Tables" info)))
826 (concat
827 title "\n"
828 (make-string (string-width title)
829 (if (eq (plist-get info :ascii-charset) 'utf-8) ?─ ?_))
830 "\n\n"
831 (let ((text-width
832 (if keyword (org-ascii--current-text-width keyword info)
833 (- (plist-get info :ascii-text-width)
834 (plist-get info :ascii-global-margin))))
835 ;; Use a counter instead of retrieving ordinal of each
836 ;; src-block.
837 (count 0))
838 (mapconcat
839 (lambda (table)
840 ;; Store initial text so its length can be computed. This is
841 ;; used to properly align caption right to it in case of
842 ;; filling (like contents of a description list item).
843 (let* ((initial-text
844 (format (org-ascii--translate "Table %d:" info)
845 (incf count)))
846 (initial-width (string-width initial-text)))
847 (concat
848 initial-text " "
849 (org-trim
850 (org-ascii--indent-string
851 (org-ascii--fill-string
852 ;; Use short name in priority, if available.
853 (let ((caption (or (org-export-get-caption table t)
854 (org-export-get-caption table))))
855 (org-export-data caption info))
856 (- text-width initial-width) info)
857 initial-width)))))
858 (org-export-collect-tables info) "\n")))))
860 (defun org-ascii--unique-links (element info)
861 "Return a list of unique link references in ELEMENT.
862 ELEMENT is either a headline element or a section element. INFO
863 is a plist used as a communication channel."
864 (let* (seen
865 (unique-link-p
866 (function
867 ;; Return LINK if it wasn't referenced so far, or nil.
868 ;; Update SEEN links along the way.
869 (lambda (link)
870 (let ((footprint
871 ;; Normalize description in footprints.
872 (cons (org-element-property :raw-link link)
873 (let ((contents (org-element-contents link)))
874 (and contents
875 (replace-regexp-in-string
876 "[ \r\t\n]+" " "
877 (org-trim
878 (org-element-interpret-data contents))))))))
879 ;; Ignore LINK if it hasn't been translated already.
880 ;; It can happen if it is located in an affiliated
881 ;; keyword that was ignored.
882 (when (and (org-string-nw-p
883 (gethash link (plist-get info :exported-data)))
884 (not (member footprint seen)))
885 (push footprint seen) link)))))
886 ;; If at a section, find parent headline, if any, in order to
887 ;; count links that might be in the title.
888 (headline
889 (if (eq (org-element-type element) 'headline) element
890 (or (org-export-get-parent-headline element) element))))
891 ;; Get all links in HEADLINE.
892 (org-element-map headline 'link
893 (lambda (l) (funcall unique-link-p l)) info nil nil t)))
895 (defun org-ascii--describe-links (links width info)
896 "Return a string describing a list of links.
898 LINKS is a list of link type objects, as returned by
899 `org-ascii--unique-links'. WIDTH is the text width allowed for
900 the output string. INFO is a plist used as a communication
901 channel."
902 (mapconcat
903 (lambda (link)
904 (let ((type (org-element-property :type link))
905 (anchor (let ((desc (org-element-contents link)))
906 (if desc (org-export-data desc info)
907 (org-element-property :raw-link link)))))
908 (cond
909 ;; Coderefs, radio links and fuzzy links are ignored.
910 ((member type '("coderef" "radio" "fuzzy")) nil)
911 ;; Id and custom-id links: Headlines refer to their numbering.
912 ((member type '("custom-id" "id"))
913 (let ((dest (org-export-resolve-id-link link info)))
914 (concat
915 (org-ascii--fill-string
916 (format
917 "[%s] %s"
918 anchor
919 (if (not dest) (org-ascii--translate "Unknown reference" info)
920 (format
921 (org-ascii--translate "See section %s" info)
922 (mapconcat 'number-to-string
923 (org-export-get-headline-number dest info) "."))))
924 width info) "\n\n")))
925 ;; Do not add a link that cannot be resolved and doesn't have
926 ;; any description: destination is already visible in the
927 ;; paragraph.
928 ((not (org-element-contents link)) nil)
929 ;; Do not add a link already handled by custom export
930 ;; functions.
931 ((let ((protocol (nth 2 (assoc type org-link-protocols)))
932 (path (org-element-property :path link)))
933 (and (functionp protocol)
934 (funcall protocol (org-link-unescape path) anchor 'ascii)))
935 nil)
937 (concat
938 (org-ascii--fill-string
939 (format "[%s] %s" anchor (org-element-property :raw-link link))
940 width info)
941 "\n\n")))))
942 links ""))
944 (defun org-ascii--checkbox (item info)
945 "Return checkbox string for ITEM or nil.
946 INFO is a plist used as a communication channel."
947 (let ((utf8p (eq (plist-get info :ascii-charset) 'utf-8)))
948 (case (org-element-property :checkbox item)
949 (on (if utf8p "☑ " "[X] "))
950 (off (if utf8p "☐ " "[ ] "))
951 (trans (if utf8p "☒ " "[-] ")))))
955 ;;; Template
957 (defun org-ascii-template--document-title (info)
958 "Return document title, as a string.
959 INFO is a plist used as a communication channel."
960 (let* ((text-width (plist-get info :ascii-text-width))
961 ;; Links in the title will not be resolved later, so we make
962 ;; sure their path is located right after them.
963 (info (org-combine-plists info '(:ascii-links-to-notes nil)))
964 (title (org-export-data (plist-get info :title) info))
965 (author (and (plist-get info :with-author)
966 (let ((auth (plist-get info :author)))
967 (and auth (org-export-data auth info)))))
968 (email (and (plist-get info :with-email)
969 (org-export-data (plist-get info :email) info)))
970 (date (and (plist-get info :with-date)
971 (org-export-data (org-export-get-date info) info))))
972 ;; There are two types of title blocks depending on the presence
973 ;; of a title to display.
974 (if (string= title "")
975 ;; Title block without a title. DATE is positioned at the top
976 ;; right of the document, AUTHOR to the top left and EMAIL
977 ;; just below.
978 (cond
979 ((and (org-string-nw-p date) (org-string-nw-p author))
980 (concat
981 author
982 (make-string (- text-width (string-width date) (string-width author))
983 ?\s)
984 date
985 (when (org-string-nw-p email) (concat "\n" email))
986 "\n\n\n"))
987 ((and (org-string-nw-p date) (org-string-nw-p email))
988 (concat
989 email
990 (make-string (- text-width (string-width date) (string-width email))
991 ?\s)
992 date "\n\n\n"))
993 ((org-string-nw-p date)
994 (concat
995 (org-ascii--justify-lines date text-width 'right)
996 "\n\n\n"))
997 ((and (org-string-nw-p author) (org-string-nw-p email))
998 (concat author "\n" email "\n\n\n"))
999 ((org-string-nw-p author) (concat author "\n\n\n"))
1000 ((org-string-nw-p email) (concat email "\n\n\n")))
1001 ;; Title block with a title. Document's TITLE, along with the
1002 ;; AUTHOR and its EMAIL are both overlined and an underlined,
1003 ;; centered. Date is just below, also centered.
1004 (let* ((utf8p (eq (plist-get info :ascii-charset) 'utf-8))
1005 ;; Format TITLE. It may be filled if it is too wide,
1006 ;; that is wider than the two thirds of the total width.
1007 (title-len (min (length title) (/ (* 2 text-width) 3)))
1008 (formatted-title (org-ascii--fill-string title title-len info))
1009 (line
1010 (make-string
1011 (min (+ (max title-len
1012 (string-width (or author ""))
1013 (string-width (or email "")))
1015 text-width) (if utf8p ?━ ?_))))
1016 (org-ascii--justify-lines
1017 (concat line "\n"
1018 (unless utf8p "\n")
1019 (upcase formatted-title)
1020 (cond
1021 ((and (org-string-nw-p author) (org-string-nw-p email))
1022 (concat (if utf8p "\n\n\n" "\n\n") author "\n" email))
1023 ((org-string-nw-p author)
1024 (concat (if utf8p "\n\n\n" "\n\n") author))
1025 ((org-string-nw-p email)
1026 (concat (if utf8p "\n\n\n" "\n\n") email)))
1027 "\n" line
1028 (when (org-string-nw-p date) (concat "\n\n\n" date))
1029 "\n\n\n") text-width 'center)))))
1031 (defun org-ascii-inner-template (contents info)
1032 "Return complete document string after ASCII conversion.
1033 CONTENTS is the transcoded contents string. INFO is a plist
1034 holding export options."
1035 (org-element-normalize-string
1036 (let ((global-margin (plist-get info :ascii-global-margin)))
1037 (org-ascii--indent-string
1038 (concat
1039 ;; 1. Document's body.
1040 contents
1041 ;; 2. Footnote definitions.
1042 (let ((definitions (org-export-collect-footnote-definitions
1043 (plist-get info :parse-tree) info))
1044 ;; Insert full links right inside the footnote definition
1045 ;; as they have no chance to be inserted later.
1046 (info (org-combine-plists info '(:ascii-links-to-notes nil))))
1047 (when definitions
1048 (concat
1049 "\n\n\n"
1050 (let ((title (org-ascii--translate "Footnotes" info)))
1051 (concat
1052 title "\n"
1053 (make-string
1054 (string-width title)
1055 (if (eq (plist-get info :ascii-charset) 'utf-8) ?─ ?_))))
1056 "\n\n"
1057 (let ((text-width (- (plist-get info :ascii-text-width)
1058 global-margin)))
1059 (mapconcat
1060 (lambda (ref)
1061 (let ((id (format "[%s] " (car ref))))
1062 ;; Distinguish between inline definitions and
1063 ;; full-fledged definitions.
1064 (org-trim
1065 (let ((def (nth 2 ref)))
1066 (if (eq (org-element-type def) 'org-data)
1067 ;; Full-fledged definition: footnote ID is
1068 ;; inserted inside the first parsed
1069 ;; paragraph (FIRST), if any, to be sure
1070 ;; filling will take it into consideration.
1071 (let ((first (car (org-element-contents def))))
1072 (if (not (eq (org-element-type first) 'paragraph))
1073 (concat id "\n" (org-export-data def info))
1074 (push id (nthcdr 2 first))
1075 (org-export-data def info)))
1076 ;; Fill paragraph once footnote ID is inserted
1077 ;; in order to have a correct length for first
1078 ;; line.
1079 (org-ascii--fill-string
1080 (concat id (org-export-data def info))
1081 text-width info))))))
1082 definitions "\n\n"))))))
1083 global-margin))))
1085 (defun org-ascii-template (contents info)
1086 "Return complete document string after ASCII conversion.
1087 CONTENTS is the transcoded contents string. INFO is a plist
1088 holding export options."
1089 (let ((global-margin (plist-get info :ascii-global-margin)))
1090 (concat
1091 ;; 1. Build title block.
1092 (org-ascii--indent-string
1093 (concat (org-ascii-template--document-title info)
1094 ;; 2. Table of contents.
1095 (let ((depth (plist-get info :with-toc)))
1096 (when depth
1097 (concat
1098 (org-ascii--build-toc info (and (wholenump depth) depth))
1099 "\n\n\n"))))
1100 global-margin)
1101 ;; 3. Document's body.
1102 contents
1103 ;; 4. Creator. Ignore `comment' value as there are no comments in
1104 ;; ASCII. Justify it to the bottom right.
1105 (org-ascii--indent-string
1106 (let ((creator-info (plist-get info :with-creator))
1107 (text-width (- (plist-get info :ascii-text-width) global-margin)))
1108 (unless (or (not creator-info) (eq creator-info 'comment))
1109 (concat
1110 "\n\n\n"
1111 (org-ascii--fill-string
1112 (plist-get info :creator) text-width info 'right))))
1113 global-margin))))
1115 (defun org-ascii--translate (s info)
1116 "Translate string S according to specified language and charset.
1117 INFO is a plist used as a communication channel."
1118 (let ((charset (intern (format ":%s" (plist-get info :ascii-charset)))))
1119 (org-export-translate s charset info)))
1123 ;;; Transcode Functions
1125 ;;;; Bold
1127 (defun org-ascii-bold (bold contents info)
1128 "Transcode BOLD from Org to ASCII.
1129 CONTENTS is the text with bold markup. INFO is a plist holding
1130 contextual information."
1131 (format "*%s*" contents))
1134 ;;;; Center Block
1136 (defun org-ascii-center-block (center-block contents info)
1137 "Transcode a CENTER-BLOCK element from Org to ASCII.
1138 CONTENTS holds the contents of the block. INFO is a plist
1139 holding contextual information."
1140 ;; Center has already been taken care of at a lower level, so
1141 ;; there's nothing left to do.
1142 contents)
1145 ;;;; Clock
1147 (defun org-ascii-clock (clock contents info)
1148 "Transcode a CLOCK object from Org to ASCII.
1149 CONTENTS is nil. INFO is a plist holding contextual
1150 information."
1151 (org-ascii--justify-element
1152 (concat org-clock-string " "
1153 (org-timestamp-translate (org-element-property :value clock))
1154 (let ((time (org-element-property :duration clock)))
1155 (and time
1156 (concat " => "
1157 (apply 'format
1158 "%2s:%02s"
1159 (org-split-string time ":"))))))
1160 clock info))
1163 ;;;; Code
1165 (defun org-ascii-code (code contents info)
1166 "Return a CODE object from Org to ASCII.
1167 CONTENTS is nil. INFO is a plist holding contextual
1168 information."
1169 (format (plist-get info :ascii-verbatim-format)
1170 (org-element-property :value code)))
1173 ;;;; Drawer
1175 (defun org-ascii-drawer (drawer contents info)
1176 "Transcode a DRAWER element from Org to ASCII.
1177 CONTENTS holds the contents of the block. INFO is a plist
1178 holding contextual information."
1179 (let ((name (org-element-property :drawer-name drawer))
1180 (width (org-ascii--current-text-width drawer info)))
1181 (funcall (plist-get info :ascii-format-drawer-function)
1182 name contents width)))
1185 ;;;; Dynamic Block
1187 (defun org-ascii-dynamic-block (dynamic-block contents info)
1188 "Transcode a DYNAMIC-BLOCK element from Org to ASCII.
1189 CONTENTS holds the contents of the block. INFO is a plist
1190 holding contextual information."
1191 contents)
1194 ;;;; Entity
1196 (defun org-ascii-entity (entity contents info)
1197 "Transcode an ENTITY object from Org to ASCII.
1198 CONTENTS are the definition itself. INFO is a plist holding
1199 contextual information."
1200 (org-element-property
1201 (intern (concat ":" (symbol-name (plist-get info :ascii-charset))))
1202 entity))
1205 ;;;; Example Block
1207 (defun org-ascii-example-block (example-block contents info)
1208 "Transcode a EXAMPLE-BLOCK element from Org to ASCII.
1209 CONTENTS is nil. INFO is a plist holding contextual information."
1210 (org-ascii--justify-element
1211 (org-ascii--box-string
1212 (org-export-format-code-default example-block info) info)
1213 example-block info))
1216 ;;;; Export Snippet
1218 (defun org-ascii-export-snippet (export-snippet contents info)
1219 "Transcode a EXPORT-SNIPPET object from Org to ASCII.
1220 CONTENTS is nil. INFO is a plist holding contextual information."
1221 (when (eq (org-export-snippet-backend export-snippet) 'ascii)
1222 (org-element-property :value export-snippet)))
1225 ;;;; Export Block
1227 (defun org-ascii-export-block (export-block contents info)
1228 "Transcode a EXPORT-BLOCK element from Org to ASCII.
1229 CONTENTS is nil. INFO is a plist holding contextual information."
1230 (when (string= (org-element-property :type export-block) "ASCII")
1231 (org-ascii--justify-element
1232 (org-element-property :value export-block) export-block info)))
1235 ;;;; Fixed Width
1237 (defun org-ascii-fixed-width (fixed-width contents info)
1238 "Transcode a FIXED-WIDTH element from Org to ASCII.
1239 CONTENTS is nil. INFO is a plist holding contextual information."
1240 (org-ascii--justify-element
1241 (org-ascii--box-string
1242 (org-remove-indentation
1243 (org-element-property :value fixed-width)) info)
1244 fixed-width info))
1247 ;;;; Footnote Definition
1249 ;; Footnote Definitions are ignored. They are compiled at the end of
1250 ;; the document, by `org-ascii-inner-template'.
1253 ;;;; Footnote Reference
1255 (defun org-ascii-footnote-reference (footnote-reference contents info)
1256 "Transcode a FOOTNOTE-REFERENCE element from Org to ASCII.
1257 CONTENTS is nil. INFO is a plist holding contextual information."
1258 (format "[%s]" (org-export-get-footnote-number footnote-reference info)))
1261 ;;;; Headline
1263 (defun org-ascii-headline (headline contents info)
1264 "Transcode a HEADLINE element from Org to ASCII.
1265 CONTENTS holds the contents of the headline. INFO is a plist
1266 holding contextual information."
1267 ;; Don't export footnote section, which will be handled at the end
1268 ;; of the template.
1269 (unless (org-element-property :footnote-section-p headline)
1270 (let* ((low-level-rank (org-export-low-level-p headline info))
1271 (width (org-ascii--current-text-width headline info))
1272 ;; Blank lines between headline and its contents.
1273 ;; `org-ascii-headline-spacing', when set, overwrites
1274 ;; original buffer's spacing.
1275 (pre-blanks
1276 (make-string
1277 (or (car (plist-get info :ascii-headline-spacing))
1278 (org-element-property :pre-blank headline))
1279 ?\n))
1280 ;; Even if HEADLINE has no section, there might be some
1281 ;; links in its title that we shouldn't forget to describe.
1282 (links
1283 (unless (or (eq (caar (org-element-contents headline)) 'section))
1284 (let ((title (org-element-property :title headline)))
1285 (when (consp title)
1286 (org-ascii--describe-links
1287 (org-ascii--unique-links title info) width info))))))
1288 ;; Deep subtree: export it as a list item.
1289 (if low-level-rank
1290 (concat
1291 ;; Bullet.
1292 (let ((bullets (cdr (assq (plist-get info :ascii-charset)
1293 (plist-get info :ascii-bullets)))))
1294 (char-to-string
1295 (nth (mod (1- low-level-rank) (length bullets)) bullets)))
1297 ;; Title.
1298 (org-ascii--build-title headline info width) "\n"
1299 ;; Contents, indented by length of bullet.
1300 pre-blanks
1301 (org-ascii--indent-string
1302 (concat contents
1303 (when (org-string-nw-p links) (concat "\n\n" links)))
1305 ;; Else: Standard headline.
1306 (concat
1307 (org-ascii--build-title headline info width 'underline)
1308 "\n" pre-blanks
1309 (concat (when (org-string-nw-p links) links) contents))))))
1312 ;;;; Horizontal Rule
1314 (defun org-ascii-horizontal-rule (horizontal-rule contents info)
1315 "Transcode an HORIZONTAL-RULE object from Org to ASCII.
1316 CONTENTS is nil. INFO is a plist holding contextual
1317 information."
1318 (let ((text-width (org-ascii--current-text-width horizontal-rule info))
1319 (spec-width
1320 (org-export-read-attribute :attr_ascii horizontal-rule :width)))
1321 (org-ascii--justify-lines
1322 (make-string (if (and spec-width (string-match "^[0-9]+$" spec-width))
1323 (string-to-number spec-width)
1324 text-width)
1325 (if (eq (plist-get info :ascii-charset) 'utf-8) ?― ?-))
1326 text-width 'center)))
1329 ;;;; Inline Src Block
1331 (defun org-ascii-inline-src-block (inline-src-block contents info)
1332 "Transcode an INLINE-SRC-BLOCK element from Org to ASCII.
1333 CONTENTS holds the contents of the item. INFO is a plist holding
1334 contextual information."
1335 (format (plist-get info :ascii-verbatim-format)
1336 (org-element-property :value inline-src-block)))
1339 ;;;; Inlinetask
1341 (defun org-ascii-format-inlinetask-default
1342 (todo type priority name tags contents width inlinetask info)
1343 "Format an inline task element for ASCII export.
1344 See `org-ascii-format-inlinetask-function' for a description
1345 of the parameters."
1346 (let* ((utf8p (eq (plist-get info :ascii-charset) 'utf-8))
1347 (width (or width (plist-get info :ascii-inlinetask-width))))
1348 (org-ascii--indent-string
1349 (concat
1350 ;; Top line, with an additional blank line if not in UTF-8.
1351 (make-string width (if utf8p ?━ ?_)) "\n"
1352 (unless utf8p (concat (make-string width ? ) "\n"))
1353 ;; Add title. Fill it if wider than inlinetask.
1354 (let ((title (org-ascii--build-title inlinetask info width)))
1355 (if (<= (string-width title) width) title
1356 (org-ascii--fill-string title width info)))
1357 "\n"
1358 ;; If CONTENTS is not empty, insert it along with
1359 ;; a separator.
1360 (when (org-string-nw-p contents)
1361 (concat (make-string width (if utf8p ?─ ?-)) "\n" contents))
1362 ;; Bottom line.
1363 (make-string width (if utf8p ?━ ?_)))
1364 ;; Flush the inlinetask to the right.
1365 (- (plist-get info :ascii-text-width) (plist-get info :ascii-global-margin)
1366 (if (not (org-export-get-parent-headline inlinetask)) 0
1367 (plist-get info :ascii-inner-margin))
1368 (org-ascii--current-text-width inlinetask info)))))
1370 (defun org-ascii-inlinetask (inlinetask contents info)
1371 "Transcode an INLINETASK element from Org to ASCII.
1372 CONTENTS holds the contents of the block. INFO is a plist
1373 holding contextual information."
1374 (let ((width (org-ascii--current-text-width inlinetask info)))
1375 (funcall (plist-get info :ascii-format-inlinetask-function)
1376 ;; todo.
1377 (and (plist-get info :with-todo-keywords)
1378 (let ((todo (org-element-property
1379 :todo-keyword inlinetask)))
1380 (and todo (org-export-data todo info))))
1381 ;; todo-type
1382 (org-element-property :todo-type inlinetask)
1383 ;; priority
1384 (and (plist-get info :with-priority)
1385 (org-element-property :priority inlinetask))
1386 ;; title
1387 (org-export-data (org-element-property :title inlinetask) info)
1388 ;; tags
1389 (and (plist-get info :with-tags)
1390 (org-element-property :tags inlinetask))
1391 ;; contents and width
1392 contents width inlinetask info)))
1395 ;;;; Italic
1397 (defun org-ascii-italic (italic contents info)
1398 "Transcode italic from Org to ASCII.
1399 CONTENTS is the text with italic markup. INFO is a plist holding
1400 contextual information."
1401 (format "/%s/" contents))
1404 ;;;; Item
1406 (defun org-ascii-item (item contents info)
1407 "Transcode an ITEM element from Org to ASCII.
1408 CONTENTS holds the contents of the item. INFO is a plist holding
1409 contextual information."
1410 (let* ((utf8p (eq (plist-get info :ascii-charset) 'utf-8))
1411 (checkbox (org-ascii--checkbox item info))
1412 (list-type (org-element-property :type (org-export-get-parent item)))
1413 (bullet
1414 ;; First parent of ITEM is always the plain-list. Get
1415 ;; `:type' property from it.
1416 (org-list-bullet-string
1417 (case list-type
1418 (descriptive
1419 (concat checkbox
1420 (org-export-data (org-element-property :tag item) info)
1421 ": "))
1422 (ordered
1423 ;; Return correct number for ITEM, paying attention to
1424 ;; counters.
1425 (let* ((struct (org-element-property :structure item))
1426 (bul (org-element-property :bullet item))
1427 (num (number-to-string
1428 (car (last (org-list-get-item-number
1429 (org-element-property :begin item)
1430 struct
1431 (org-list-prevs-alist struct)
1432 (org-list-parents-alist struct)))))))
1433 (replace-regexp-in-string "[0-9]+" num bul)))
1434 (t (let ((bul (org-element-property :bullet item)))
1435 ;; Change bullets into more visible form if UTF-8 is active.
1436 (if (not utf8p) bul
1437 (replace-regexp-in-string
1438 "-" "•"
1439 (replace-regexp-in-string
1440 "+" "⁃"
1441 (replace-regexp-in-string "*" "‣" bul))))))))))
1442 (concat
1443 bullet
1444 (unless (eq list-type 'descriptive) checkbox)
1445 ;; Contents: Pay attention to indentation. Note: check-boxes are
1446 ;; already taken care of at the paragraph level so they don't
1447 ;; interfere with indentation.
1448 (let ((contents (org-ascii--indent-string contents (string-width bullet))))
1449 (if (eq (org-element-type (car (org-element-contents item))) 'paragraph)
1450 (org-trim contents)
1451 (concat "\n" contents))))))
1454 ;;;; Keyword
1456 (defun org-ascii-keyword (keyword contents info)
1457 "Transcode a KEYWORD element from Org to ASCII.
1458 CONTENTS is nil. INFO is a plist holding contextual
1459 information."
1460 (let ((key (org-element-property :key keyword)))
1461 (cond
1462 ((string= key "ASCII")
1463 (org-ascii--justify-element
1464 (org-element-property :value keyword) keyword info))
1465 ((string= key "TOC")
1466 (org-ascii--justify-element
1467 (let ((value (downcase (org-element-property :value keyword))))
1468 (cond
1469 ((string-match "\\<headlines\\>" value)
1470 (let ((depth (or (and (string-match "[0-9]+" value)
1471 (string-to-number (match-string 0 value)))
1472 (plist-get info :with-toc))))
1473 (org-ascii--build-toc
1474 info (and (wholenump depth) depth) keyword)))
1475 ((string= "tables" value)
1476 (org-ascii--list-tables keyword info))
1477 ((string= "listings" value)
1478 (org-ascii--list-listings keyword info))))
1479 keyword info)))))
1482 ;;;; Latex Environment
1484 (defun org-ascii-latex-environment (latex-environment contents info)
1485 "Transcode a LATEX-ENVIRONMENT element from Org to ASCII.
1486 CONTENTS is nil. INFO is a plist holding contextual
1487 information."
1488 (when (plist-get info :with-latex)
1489 (org-ascii--justify-element
1490 (org-remove-indentation (org-element-property :value latex-environment))
1491 latex-environment info)))
1494 ;;;; Latex Fragment
1496 (defun org-ascii-latex-fragment (latex-fragment contents info)
1497 "Transcode a LATEX-FRAGMENT object from Org to ASCII.
1498 CONTENTS is nil. INFO is a plist holding contextual
1499 information."
1500 (when (plist-get info :with-latex)
1501 (org-element-property :value latex-fragment)))
1504 ;;;; Line Break
1506 (defun org-ascii-line-break (line-break contents info)
1507 "Transcode a LINE-BREAK object from Org to ASCII.
1508 CONTENTS is nil. INFO is a plist holding contextual
1509 information." hard-newline)
1512 ;;;; Link
1514 (defun org-ascii-link (link desc info)
1515 "Transcode a LINK object from Org to ASCII.
1517 DESC is the description part of the link, or the empty string.
1518 INFO is a plist holding contextual information."
1519 (let ((type (org-element-property :type link)))
1520 (cond
1521 ((string= type "coderef")
1522 (let ((ref (org-element-property :path link)))
1523 (format (org-export-get-coderef-format ref desc)
1524 (org-export-resolve-coderef ref info))))
1525 ;; Do not apply a special syntax on radio links. Though, use
1526 ;; transcoded target's contents as output.
1527 ((string= type "radio") desc)
1528 ;; Do not apply a special syntax on fuzzy links pointing to
1529 ;; targets.
1530 ((string= type "fuzzy")
1531 (let ((destination (org-export-resolve-fuzzy-link link info)))
1532 (if (org-string-nw-p desc) desc
1533 (when destination
1534 (let ((number
1535 (org-export-get-ordinal
1536 destination info nil 'org-ascii--has-caption-p)))
1537 (if number
1538 (if (atom number) (number-to-string number)
1539 (mapconcat #'number-to-string number "."))
1540 ;; Unnumbered headline.
1541 (when (eq 'headline (org-element-type destination))
1542 (format "[%s]"
1543 (org-export-data
1544 (org-element-property :title destination)
1545 info)))))))))
1546 ((let ((protocol (nth 2 (assoc type org-link-protocols)))
1547 (path (org-element-property :path link)))
1548 (and (functionp protocol)
1549 (funcall protocol (org-link-unescape path) desc 'ascii))))
1551 (let ((raw-link (org-element-property :raw-link link)))
1552 (if (not (org-string-nw-p desc)) (format "[%s]" raw-link)
1553 (concat (format "[%s]" desc)
1554 (and (not (plist-get info :ascii-links-to-notes))
1555 (format " (%s)" raw-link)))))))))
1558 ;;;; Node Properties
1560 (defun org-ascii-node-property (node-property contents info)
1561 "Transcode a NODE-PROPERTY element from Org to ASCII.
1562 CONTENTS is nil. INFO is a plist holding contextual
1563 information."
1564 (format "%s:%s"
1565 (org-element-property :key node-property)
1566 (let ((value (org-element-property :value node-property)))
1567 (if value (concat " " value) ""))))
1570 ;;;; Paragraph
1572 (defun org-ascii-paragraph (paragraph contents info)
1573 "Transcode a PARAGRAPH element from Org to ASCII.
1574 CONTENTS is the contents of the paragraph, as a string. INFO is
1575 the plist used as a communication channel."
1576 (org-ascii--justify-element
1577 (let ((indented-line-width (plist-get info :ascii-indented-line-width)))
1578 (if (not (wholenump indented-line-width)) contents
1579 (concat
1580 ;; Do not indent first paragraph in a section.
1581 (unless (and (not (org-export-get-previous-element paragraph info))
1582 (eq (org-element-type (org-export-get-parent paragraph))
1583 'section))
1584 (make-string indented-line-width ?\s))
1585 (replace-regexp-in-string "\\`[ \t]+" "" contents))))
1586 paragraph info))
1589 ;;;; Plain List
1591 (defun org-ascii-plain-list (plain-list contents info)
1592 "Transcode a PLAIN-LIST element from Org to ASCII.
1593 CONTENTS is the contents of the list. INFO is a plist holding
1594 contextual information."
1595 (let ((margin (plist-get info :ascii-list-margin)))
1596 (if (or (< margin 1)
1597 (eq (org-element-type (org-export-get-parent plain-list)) 'item))
1598 contents
1599 (org-ascii--indent-string contents margin))))
1602 ;;;; Plain Text
1604 (defun org-ascii-plain-text (text info)
1605 "Transcode a TEXT string from Org to ASCII.
1606 INFO is a plist used as a communication channel."
1607 (let ((utf8p (eq (plist-get info :ascii-charset) 'utf-8)))
1608 (when (and utf8p (plist-get info :with-smart-quotes))
1609 (setq text (org-export-activate-smart-quotes text :utf-8 info)))
1610 (if (not (plist-get info :with-special-strings)) text
1611 (setq text (replace-regexp-in-string "\\\\-" "" text))
1612 (if (not utf8p) text
1613 ;; Usual replacements in utf-8 with proper option set.
1614 (replace-regexp-in-string
1615 "\\.\\.\\." "…"
1616 (replace-regexp-in-string
1617 "--" "–"
1618 (replace-regexp-in-string "---" "—" text)))))))
1621 ;;;; Planning
1623 (defun org-ascii-planning (planning contents info)
1624 "Transcode a PLANNING element from Org to ASCII.
1625 CONTENTS is nil. INFO is a plist used as a communication
1626 channel."
1627 (org-ascii--justify-element
1628 (mapconcat
1629 #'identity
1630 (delq nil
1631 (list (let ((closed (org-element-property :closed planning)))
1632 (when closed
1633 (concat org-closed-string " "
1634 (org-timestamp-translate closed))))
1635 (let ((deadline (org-element-property :deadline planning)))
1636 (when deadline
1637 (concat org-deadline-string " "
1638 (org-timestamp-translate deadline))))
1639 (let ((scheduled (org-element-property :scheduled planning)))
1640 (when scheduled
1641 (concat org-scheduled-string " "
1642 (org-timestamp-translate scheduled))))))
1643 " ")
1644 planning info))
1647 ;;;; Property Drawer
1649 (defun org-ascii-property-drawer (property-drawer contents info)
1650 "Transcode a PROPERTY-DRAWER element from Org to ASCII.
1651 CONTENTS holds the contents of the drawer. INFO is a plist
1652 holding contextual information."
1653 (and (org-string-nw-p contents)
1654 (org-ascii--justify-element contents property-drawer info)))
1657 ;;;; Quote Block
1659 (defun org-ascii-quote-block (quote-block contents info)
1660 "Transcode a QUOTE-BLOCK element from Org to ASCII.
1661 CONTENTS holds the contents of the block. INFO is a plist
1662 holding contextual information."
1663 (org-ascii--indent-string contents (plist-get info :ascii-quote-margin)))
1666 ;;;; Radio Target
1668 (defun org-ascii-radio-target (radio-target contents info)
1669 "Transcode a RADIO-TARGET object from Org to ASCII.
1670 CONTENTS is the contents of the target. INFO is a plist holding
1671 contextual information."
1672 contents)
1675 ;;;; Section
1677 (defun org-ascii-section (section contents info)
1678 "Transcode a SECTION element from Org to ASCII.
1679 CONTENTS is the contents of the section. INFO is a plist holding
1680 contextual information."
1681 (org-ascii--indent-string
1682 (concat
1683 contents
1684 (when (plist-get info :ascii-links-to-notes)
1685 ;; Add list of links at the end of SECTION.
1686 (let ((links (org-ascii--describe-links
1687 (org-ascii--unique-links section info)
1688 (org-ascii--current-text-width section info) info)))
1689 ;; Separate list of links and section contents.
1690 (when (org-string-nw-p links) (concat "\n\n" links)))))
1691 ;; Do not apply inner margin if parent headline is low level.
1692 (let ((headline (org-export-get-parent-headline section)))
1693 (if (or (not headline) (org-export-low-level-p headline info)) 0
1694 (plist-get info :ascii-inner-margin)))))
1697 ;;;; Special Block
1699 (defun org-ascii-special-block (special-block contents info)
1700 "Transcode a SPECIAL-BLOCK element from Org to ASCII.
1701 CONTENTS holds the contents of the block. INFO is a plist
1702 holding contextual information."
1703 ;; "JUSTIFYLEFT" and "JUSTFYRIGHT" have already been taken care of
1704 ;; at a lower level. There is no other special block type to
1705 ;; handle.
1706 contents)
1709 ;;;; Src Block
1711 (defun org-ascii-src-block (src-block contents info)
1712 "Transcode a SRC-BLOCK element from Org to ASCII.
1713 CONTENTS holds the contents of the item. INFO is a plist holding
1714 contextual information."
1715 (let ((caption (org-ascii--build-caption src-block info))
1716 (caption-above-p (plist-get info :ascii-caption-above))
1717 (code (org-export-format-code-default src-block info)))
1718 (if (equal code "") ""
1719 (org-ascii--justify-element
1720 (concat
1721 (and caption caption-above-p (concat caption "\n"))
1722 (org-ascii--box-string code info)
1723 (and caption (not caption-above-p) (concat "\n" caption)))
1724 src-block info))))
1727 ;;;; Statistics Cookie
1729 (defun org-ascii-statistics-cookie (statistics-cookie contents info)
1730 "Transcode a STATISTICS-COOKIE object from Org to ASCII.
1731 CONTENTS is nil. INFO is a plist holding contextual information."
1732 (org-element-property :value statistics-cookie))
1735 ;;;; Subscript
1737 (defun org-ascii-subscript (subscript contents info)
1738 "Transcode a SUBSCRIPT object from Org to ASCII.
1739 CONTENTS is the contents of the object. INFO is a plist holding
1740 contextual information."
1741 (if (org-element-property :use-brackets-p subscript)
1742 (format "_{%s}" contents)
1743 (format "_%s" contents)))
1746 ;;;; Superscript
1748 (defun org-ascii-superscript (superscript contents info)
1749 "Transcode a SUPERSCRIPT object from Org to ASCII.
1750 CONTENTS is the contents of the object. INFO is a plist holding
1751 contextual information."
1752 (if (org-element-property :use-brackets-p superscript)
1753 (format "^{%s}" contents)
1754 (format "^%s" contents)))
1757 ;;;; Strike-through
1759 (defun org-ascii-strike-through (strike-through contents info)
1760 "Transcode STRIKE-THROUGH from Org to ASCII.
1761 CONTENTS is text with strike-through markup. INFO is a plist
1762 holding contextual information."
1763 (format "+%s+" contents))
1766 ;;;; Table
1768 (defun org-ascii-table (table contents info)
1769 "Transcode a TABLE element from Org to ASCII.
1770 CONTENTS is the contents of the table. INFO is a plist holding
1771 contextual information."
1772 (let ((caption (org-ascii--build-caption table info))
1773 (caption-above-p (plist-get info :ascii-caption-above)))
1774 (org-ascii--justify-element
1775 (concat
1776 ;; Possibly add a caption string above.
1777 (and caption caption-above-p (concat caption "\n"))
1778 ;; Insert table. Note: "table.el" tables are left unmodified.
1779 (cond ((eq (org-element-property :type table) 'org) contents)
1780 ((and (plist-get info :ascii-table-use-ascii-art)
1781 (eq (plist-get info :ascii-charset) 'utf-8)
1782 (require 'ascii-art-to-unicode nil t))
1783 (with-temp-buffer
1784 (insert (org-remove-indentation
1785 (org-element-property :value table)))
1786 (goto-char (point-min))
1787 (aa2u)
1788 (goto-char (point-max))
1789 (skip-chars-backward " \r\t\n")
1790 (buffer-substring (point-min) (point))))
1791 (t (org-remove-indentation (org-element-property :value table))))
1792 ;; Possible add a caption string below.
1793 (and (not caption-above-p) caption))
1794 table info)))
1797 ;;;; Table Cell
1799 (defun org-ascii--table-cell-width (table-cell info)
1800 "Return width of TABLE-CELL.
1802 INFO is a plist used as a communication channel.
1804 Width of a cell is determined either by a width cookie in the
1805 same column as the cell, or by the maximum cell's length in that
1806 column.
1808 When `org-ascii-table-widen-columns' is non-nil, width cookies
1809 are ignored."
1810 (let* ((row (org-export-get-parent table-cell))
1811 (table (org-export-get-parent row))
1812 (col (let ((cells (org-element-contents row)))
1813 (- (length cells) (length (memq table-cell cells)))))
1814 (cache
1815 (or (plist-get info :ascii-table-cell-width-cache)
1816 (plist-get (setq info
1817 (plist-put info :ascii-table-cell-width-cache
1818 (make-hash-table :test 'equal)))
1819 :ascii-table-cell-width-cache)))
1820 (key (cons table col))
1821 (widenp (plist-get info :ascii-table-widen-columns)))
1822 (or (gethash key cache)
1823 (puthash
1825 (let ((cookie-width (org-export-table-cell-width table-cell info)))
1826 (or (and (not widenp) cookie-width)
1827 (let ((contents-width
1828 (let ((max-width 0))
1829 (org-element-map table 'table-row
1830 (lambda (row)
1831 (setq max-width
1832 (max (string-width
1833 (org-export-data
1834 (org-element-contents
1835 (elt (org-element-contents row) col))
1836 info))
1837 max-width)))
1838 info)
1839 max-width)))
1840 (cond ((not cookie-width) contents-width)
1841 (widenp (max cookie-width contents-width))
1842 (t cookie-width)))))
1843 cache))))
1845 (defun org-ascii-table-cell (table-cell contents info)
1846 "Transcode a TABLE-CELL object from Org to ASCII.
1847 CONTENTS is the cell contents. INFO is a plist used as
1848 a communication channel."
1849 ;; Determine column width. When `org-ascii-table-widen-columns'
1850 ;; is nil and some width cookie has set it, use that value.
1851 ;; Otherwise, compute the maximum width among transcoded data of
1852 ;; each cell in the column.
1853 (let ((width (org-ascii--table-cell-width table-cell info)))
1854 ;; When contents are too large, truncate them.
1855 (unless (or (plist-get info :ascii-table-widen-columns)
1856 (<= (string-width (or contents "")) width))
1857 (setq contents (concat (substring contents 0 (- width 2)) "=>")))
1858 ;; Align contents correctly within the cell.
1859 (let* ((indent-tabs-mode nil)
1860 (data
1861 (when contents
1862 (org-ascii--justify-lines
1863 contents width
1864 (org-export-table-cell-alignment table-cell info)))))
1865 (setq contents
1866 (concat data
1867 (make-string (- width (string-width (or data ""))) ?\s))))
1868 ;; Return cell.
1869 (concat (format " %s " contents)
1870 (when (memq 'right (org-export-table-cell-borders table-cell info))
1871 (if (eq (plist-get info :ascii-charset) 'utf-8) "│" "|")))))
1874 ;;;; Table Row
1876 (defun org-ascii-table-row (table-row contents info)
1877 "Transcode a TABLE-ROW element from Org to ASCII.
1878 CONTENTS is the row contents. INFO is a plist used as
1879 a communication channel."
1880 (when (eq (org-element-property :type table-row) 'standard)
1881 (let ((build-hline
1882 (function
1883 (lambda (lcorner horiz vert rcorner)
1884 (concat
1885 (apply
1886 'concat
1887 (org-element-map table-row 'table-cell
1888 (lambda (cell)
1889 (let ((width (org-ascii--table-cell-width cell info))
1890 (borders (org-export-table-cell-borders cell info)))
1891 (concat
1892 ;; In order to know if CELL starts the row, do
1893 ;; not compare it with the first cell in the
1894 ;; row as there might be a special column.
1895 ;; Instead, compare it with first exportable
1896 ;; cell, obtained with `org-element-map'.
1897 (when (and (memq 'left borders)
1898 (eq (org-element-map table-row 'table-cell
1899 'identity info t)
1900 cell))
1901 lcorner)
1902 (make-string (+ 2 width) (string-to-char horiz))
1903 (cond
1904 ((not (memq 'right borders)) nil)
1905 ((eq (car (last (org-element-contents table-row))) cell)
1906 rcorner)
1907 (t vert)))))
1908 info)) "\n"))))
1909 (utf8p (eq (plist-get info :ascii-charset) 'utf-8))
1910 (borders (org-export-table-cell-borders
1911 (org-element-map table-row 'table-cell 'identity info t)
1912 info)))
1913 (concat (cond
1914 ((and (memq 'top borders) (or utf8p (memq 'above borders)))
1915 (if utf8p (funcall build-hline "┍" "━" "┯" "┑")
1916 (funcall build-hline "+" "-" "+" "+")))
1917 ((memq 'above borders)
1918 (if utf8p (funcall build-hline "├" "─" "┼" "┤")
1919 (funcall build-hline "+" "-" "+" "+"))))
1920 (when (memq 'left borders) (if utf8p "│" "|"))
1921 contents "\n"
1922 (when (and (memq 'bottom borders) (or utf8p (memq 'below borders)))
1923 (if utf8p (funcall build-hline "┕" "━" "┷" "┙")
1924 (funcall build-hline "+" "-" "+" "+")))))))
1927 ;;;; Timestamp
1929 (defun org-ascii-timestamp (timestamp contents info)
1930 "Transcode a TIMESTAMP object from Org to ASCII.
1931 CONTENTS is nil. INFO is a plist holding contextual information."
1932 (org-ascii-plain-text (org-timestamp-translate timestamp) info))
1935 ;;;; Underline
1937 (defun org-ascii-underline (underline contents info)
1938 "Transcode UNDERLINE from Org to ASCII.
1939 CONTENTS is the text with underline markup. INFO is a plist
1940 holding contextual information."
1941 (format "_%s_" contents))
1944 ;;;; Verbatim
1946 (defun org-ascii-verbatim (verbatim contents info)
1947 "Return a VERBATIM object from Org to ASCII.
1948 CONTENTS is nil. INFO is a plist holding contextual information."
1949 (format (plist-get info :ascii-verbatim-format)
1950 (org-element-property :value verbatim)))
1953 ;;;; Verse Block
1955 (defun org-ascii-verse-block (verse-block contents info)
1956 "Transcode a VERSE-BLOCK element from Org to ASCII.
1957 CONTENTS is verse block contents. INFO is a plist holding
1958 contextual information."
1959 (let ((verse-width (org-ascii--current-text-width verse-block info)))
1960 (org-ascii--indent-string
1961 (org-ascii--justify-element contents verse-block info)
1962 (plist-get info :ascii-quote-margin))))
1966 ;;; Filters
1968 (defun org-ascii-filter-headline-blank-lines (headline back-end info)
1969 "Filter controlling number of blank lines after a headline.
1971 HEADLINE is a string representing a transcoded headline.
1972 BACK-END is symbol specifying back-end used for export. INFO is
1973 plist containing the communication channel.
1975 This function only applies to `ascii' back-end. See
1976 `org-ascii-headline-spacing' for information."
1977 (let ((headline-spacing (plist-get info :ascii-headline-spacing)))
1978 (if (not headline-spacing) headline
1979 (let ((blanks (make-string (1+ (cdr headline-spacing)) ?\n)))
1980 (replace-regexp-in-string "\n\\(?:\n[ \t]*\\)*\\'" blanks headline)))))
1982 (defun org-ascii-filter-paragraph-spacing (tree back-end info)
1983 "Filter controlling number of blank lines between paragraphs.
1985 TREE is the parse tree. BACK-END is the symbol specifying
1986 back-end used for export. INFO is a plist used as
1987 a communication channel.
1989 See `org-ascii-paragraph-spacing' for information."
1990 (let ((paragraph-spacing (plist-get info :ascii-paragraph-spacing)))
1991 (when (wholenump paragraph-spacing)
1992 (org-element-map tree 'paragraph
1993 (lambda (p)
1994 (when (eq (org-element-type (org-export-get-next-element p info))
1995 'paragraph)
1996 (org-element-put-property p :post-blank paragraph-spacing))))))
1997 tree)
1999 (defun org-ascii-filter-comment-spacing (tree backend info)
2000 "Filter removing blank lines between comments.
2001 TREE is the parse tree. BACK-END is the symbol specifying
2002 back-end used for export. INFO is a plist used as
2003 a communication channel."
2004 (org-element-map tree '(comment comment-block)
2005 (lambda (c)
2006 (when (memq (org-element-type (org-export-get-next-element c info))
2007 '(comment comment-block))
2008 (org-element-put-property c :post-blank 0))))
2009 tree)
2013 ;;; End-user functions
2015 ;;;###autoload
2016 (defun org-ascii-export-as-ascii
2017 (&optional async subtreep visible-only body-only ext-plist)
2018 "Export current buffer to a text buffer.
2020 If narrowing is active in the current buffer, only export its
2021 narrowed part.
2023 If a region is active, export that region.
2025 A non-nil optional argument ASYNC means the process should happen
2026 asynchronously. The resulting buffer should be accessible
2027 through the `org-export-stack' interface.
2029 When optional argument SUBTREEP is non-nil, export the sub-tree
2030 at point, extracting information from the headline properties
2031 first.
2033 When optional argument VISIBLE-ONLY is non-nil, don't export
2034 contents of hidden elements.
2036 When optional argument BODY-ONLY is non-nil, strip title and
2037 table of contents from output.
2039 EXT-PLIST, when provided, is a property list with external
2040 parameters overriding Org default settings, but still inferior to
2041 file-local settings.
2043 Export is done in a buffer named \"*Org ASCII Export*\", which
2044 will be displayed when `org-export-show-temporary-export-buffer'
2045 is non-nil."
2046 (interactive)
2047 (org-export-to-buffer 'ascii "*Org ASCII Export*"
2048 async subtreep visible-only body-only ext-plist (lambda () (text-mode))))
2050 ;;;###autoload
2051 (defun org-ascii-export-to-ascii
2052 (&optional async subtreep visible-only body-only ext-plist)
2053 "Export current buffer to a text file.
2055 If narrowing is active in the current buffer, only export its
2056 narrowed part.
2058 If a region is active, export that region.
2060 A non-nil optional argument ASYNC means the process should happen
2061 asynchronously. The resulting file should be accessible through
2062 the `org-export-stack' interface.
2064 When optional argument SUBTREEP is non-nil, export the sub-tree
2065 at point, extracting information from the headline properties
2066 first.
2068 When optional argument VISIBLE-ONLY is non-nil, don't export
2069 contents of hidden elements.
2071 When optional argument BODY-ONLY is non-nil, strip title and
2072 table of contents from output.
2074 EXT-PLIST, when provided, is a property list with external
2075 parameters overriding Org default settings, but still inferior to
2076 file-local settings.
2078 Return output file's name."
2079 (interactive)
2080 (let ((file (org-export-output-file-name ".txt" subtreep)))
2081 (org-export-to-file 'ascii file
2082 async subtreep visible-only body-only ext-plist)))
2084 ;;;###autoload
2085 (defun org-ascii-publish-to-ascii (plist filename pub-dir)
2086 "Publish an Org file to ASCII.
2088 FILENAME is the filename of the Org file to be published. PLIST
2089 is the property list for the given project. PUB-DIR is the
2090 publishing directory.
2092 Return output file name."
2093 (org-publish-org-to
2094 'ascii filename ".txt" `(:ascii-charset ascii ,@plist) pub-dir))
2096 ;;;###autoload
2097 (defun org-ascii-publish-to-latin1 (plist filename pub-dir)
2098 "Publish an Org file to Latin-1.
2100 FILENAME is the filename of the Org file to be published. PLIST
2101 is the property list for the given project. PUB-DIR is the
2102 publishing directory.
2104 Return output file name."
2105 (org-publish-org-to
2106 'ascii filename ".txt" `(:ascii-charset latin1 ,@plist) pub-dir))
2108 ;;;###autoload
2109 (defun org-ascii-publish-to-utf8 (plist filename pub-dir)
2110 "Publish an org file to UTF-8.
2112 FILENAME is the filename of the Org file to be published. PLIST
2113 is the property list for the given project. PUB-DIR is the
2114 publishing directory.
2116 Return output file name."
2117 (org-publish-org-to
2118 'ascii filename ".txt" `(:ascii-charset utf-8 ,@plist) pub-dir))
2121 (provide 'ox-ascii)
2123 ;; Local variables:
2124 ;; generated-autoload-file: "org-loaddefs.el"
2125 ;; coding: utf-8-emacs
2126 ;; End:
2128 ;;; ox-ascii.el ends here