all messages for Emacs-related lists mirrored at yhetil.org
 help / color / mirror / code / Atom feed
blob 3231d348968eb1afda6898851bd6a13403ba20f2 33944 bytes (raw)
name: contrib/lisp/ox-koma-letter.el 	 # note: path name is non-authoritative(*)

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
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
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
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
356
357
358
359
360
361
362
363
364
365
366
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
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
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
 
;;; ox-koma-letter.el --- KOMA Scrlttr2 Back-End for Org Export Engine

;; Copyright (C) 2007-2015  Free Software Foundation, Inc.

;; Author: Nicolas Goaziou <n.goaziou AT gmail DOT com>
;;         Alan Schmitt <alan.schmitt AT polytechnique DOT org>
;;         Viktor Rosenfeld <listuser36 AT gmail DOT com>
;;         Rasmus Pank Roulund <emacs AT pank DOT eu>
;; Keywords: org, wp, tex

;; This program is free software: you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.

;; This program is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;; GNU General Public License for more details.

;; You should have received a copy of the GNU General Public License
;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.

;;; Commentary:
;;
;; This library implements a KOMA Scrlttr2 back-end, derived from the
;; LaTeX one.
;;
;; Depending on the desired output format, three commands are provided
;; for export: `org-koma-letter-export-as-latex' (temporary buffer),
;; `org-koma-letter-export-to-latex' ("tex" file) and
;; `org-koma-letter-export-to-pdf' ("pdf" file).
;;
;; On top of buffer keywords supported by `latex' back-end (see
;; `org-latex-options-alist'), this back-end introduces the following
;; keywords:
;;   - CLOSING: see `org-koma-letter-closing',
;;   - FROM_ADDRESS: see `org-koma-letter-from-address',
;;   - LCO: see `org-koma-letter-class-option-file',
;;   - OPENING: see `org-koma-letter-opening',
;;   - PHONE_NUMBER: see `org-koma-letter-phone-number',
;;   - SIGNATURE: see `org-koma-letter-signature',
;;   - PLACE: see `org-koma-letter-place',
;;   - TO_ADDRESS:  If unspecified this is set to "\mbox{}".
;;
;; TO_ADDRESS and FROM_ADDRESS can also be specified using heading
;; with the special tags specified in
;; `org-koma-letter-special-tags-in-letter', namely "to" and "from".
;; LaTeX line breaks are not necessary if using these headings.  If
;; both a headline and a keyword specify a to or from address the
;; value is determined in accordance with
;; `org-koma-letter-prefer-special-headings'.
;;
;; A number of OPTIONS settings can be set to change which contents is
;; exported.
;;   - backaddress (see `org-koma-letter-use-backaddress')
;;   - foldmarks (see `org-koma-letter-use-foldmarks')
;;   - phone (see `org-koma-letter-use-phone')
;;   - email (see `org-koma-letter-use-email')
;;   - place (see `org-koma-letter-use-place')
;;   - subject, a list of format options
;;     (see `org-koma-letter-subject-format')
;;   - after-closing-order, a list of the ordering of headings with
;;     special tags after closing (see
;;     `org-koma-letter-special-tags-after-closing')
;;   - after-letter-order, as above, but after the end of the letter
;;     (see `org-koma-letter-special-tags-after-letter').
;;
;; The following variables works differently from the main LaTeX class
;;   - AUTHOR: Default to user-full-name but may be disabled.
;;     (See also `org-koma-letter-author'),
;;   - EMAIL: Same as AUTHOR. (see also `org-koma-letter-email'),
;;
;; Headlines are in general ignored.  However, headlines with special
;; tags can be used for specified contents like postscript (ps),
;; carbon copy (cc), enclosures (encl) and code to be inserted after
;; \end{letter} (after_letter).  Specials tags are defined in
;; `org-koma-letter-special-tags-after-closing' and
;; `org-koma-letter-special-tags-after-letter'.  Currently members of
;; `org-koma-letter-special-tags-after-closing' used as macros and the
;; content of the headline is the argument.
;;
;; Headlines with to and from may also be used rather than the keyword
;; approach described above.  If both a keyword and a headline with
;; information is present precedence is determined by
;; `org-koma-letter-prefer-special-headings'.
;;
;; You need an appropriate association in `org-latex-classes' in order
;; to use the KOMA Scrlttr2 class.  By default, a sparse scrlttr2
;; class is provided: "default-koma-letter".  You can also add you own
;; letter class.  For instance:
;;
;;   (add-to-list 'org-latex-classes
;;                '("my-letter"
;;                  "\\documentclass\[%
;;   DIV=14,
;;   fontsize=12pt,
;;   parskip=half,
;;   subject=titled,
;;   backaddress=false,
;;   fromalign=left,
;;   fromemail=true,
;;   fromphone=true\]\{scrlttr2\}
;;   \[DEFAULT-PACKAGES]
;;   \[PACKAGES]
;;   \[EXTRA]"))
;;
;; Then, in your Org document, be sure to require the proper class
;; with:
;;
;;    #+LATEX_CLASS: my-letter
;;
;; Or by setting `org-koma-letter-default-class'.
;;
;; You may have to load (LaTeX) Babel as well, e.g., by adding
;; it to `org-latex-packages-alist',
;;
;;    (add-to-list 'org-latex-packages-alist '("AUTO" "babel" nil))

;;; Code:

(require 'ox-latex)

;; Install a default letter class.
(unless (assoc "default-koma-letter" org-latex-classes)
  (add-to-list 'org-latex-classes
	       '("default-koma-letter" "\\documentclass[11pt]{scrlttr2}")))

\f
;;; User-Configurable Variables

(defgroup org-export-koma-letter nil
  "Options for exporting to KOMA scrlttr2 class in LaTeX export."
  :tag "Org Koma-Letter"
  :group 'org-export)

(defcustom org-koma-letter-class-option-file "NF"
  "Letter Class Option File.
This option can also be set with the LCO keyword."
  :group 'org-export-koma-letter
  :type 'string)

(defcustom org-koma-letter-author 'user-full-name
  "Sender's name.

This variable defaults to calling the function `user-full-name'
which just returns the current function `user-full-name'.
Alternatively a string, nil or a function may be given.
Functions must return a string.

This option can also be set with the AUTHOR keyword."
  :group 'org-export-koma-letter
  :type '(radio (function-item user-full-name)
		(string)
		(function)
		(const :tag "Do not export author" nil)))

(defcustom org-koma-letter-email 'org-koma-letter-email
  "Sender's email address.

This variable defaults to the value `org-koma-letter-email' which
returns `user-mail-address'.  Alternatively a string, nil or
a function may be given.  Functions must return a string.

This option can also be set with the EMAIL keyword."
  :group 'org-export-koma-letter
  :type '(radio (function-item org-koma-letter-email)
		(string)
		(function)
		(const :tag "Do not export email" nil)))

(defcustom org-koma-letter-from-address ""
  "Sender's address, as a string.
This option can also be set with one or more FROM_ADDRESS
keywords."
  :group 'org-export-koma-letter
  :type 'string)

(defcustom org-koma-letter-phone-number ""
  "Sender's phone number, as a string.
This option can also be set with the PHONE_NUMBER keyword."
  :group 'org-export-koma-letter
  :type 'string)

(defcustom org-koma-letter-place ""
  "Place from which the letter is sent, as a string.
This option can also be set with the PLACE keyword."
  :group 'org-export-koma-letter
  :type 'string)

(defcustom org-koma-letter-opening ""
  "Letter's opening, as a string.

This option can also be set with the OPENING keyword.  Moreover,
when:
  (1) Either `org-koma-letter-prefer-special-headings' is non-nil
      or the CLOSING keyword is empty
  (2) `org-koma-letter-headline-is-opening-maybe' is non-nil;
  (3) the letter contains a headline without a special
      tag (e.g. \"to\" or \"ps\");
then the opening will be implicitly set as the untagged headline title."
  :group 'org-export-koma-letter
  :type 'string)

(defcustom org-koma-letter-closing ""
  "Letter's closing, as a string.
This option can also be set with the CLOSING keyword.  Moreover,
when:
  (1) Either `org-koma-letter-prefer-special-headings' is non-nil
      or the CLOSING keyword is empty;
  (2) `org-koma-letter-headline-is-opening-maybe' is non-nil;
  (3) the letter contains a headline with the special
      tag \"closing\";
then the opening will be set as the title of the closing special
heading title."
  :group 'org-export-koma-letter
  :type 'string)

(defcustom org-koma-letter-signature ""
  "Signature, as a string.
This option can also be set with the SIGNATURE keyword.
Moreover, when:
  (1) Either `org-koma-letter-prefer-special-headings' is non-nil
      or there is no CLOSING keyword or the CLOSING keyword is empty;
  (2) `org-koma-letter-headline-is-opening-maybe' is non-nil;
  (3) the letter contains a headline with the special
      tag \"closing\";
then the signature will be  set as the content of the
closing special heading.

Note if the content is empty the signature will not be set."
  :group 'org-export-koma-letter
  :type 'string)

(defcustom org-koma-letter-prefer-special-headings nil
  "Non-nil means prefer headlines over keywords for TO and FROM.
This option can also be set with the OPTIONS keyword, e.g.:
\"special-headings:t\"."
  :group 'org-export-koma-letter
  :type 'boolean)

(defcustom org-koma-letter-subject-format t
  "Non-nil means include the subject.

Support formatting options.

When t, insert a subject using default options.  When nil, do not
insert a subject at all.  It can also be a list of symbols among
the following ones:

 `afteropening'  Subject after opening
 `beforeopening' Subject before opening
 `centered'      Subject centered
 `left'          Subject left-justified
 `right'         Subject right-justified
 `titled'        Add title/description to subject
 `underlined'    Set subject underlined
 `untitled'      Do not add title/description to subject

Please refer to the KOMA-script manual (Table 4.16. in the
English manual of 2012-07-22).

This option can also be set with the OPTIONS keyword, e.g.:
\"subject:(underlined centered)\"."
  :type
  '(choice
    (const :tag "No export" nil)
    (const :tag "Default options" t)
    (set :tag "Configure options"
	 (const :tag "Subject after opening" afteropening)
	 (const :tag "Subject before opening" beforeopening)
	 (const :tag "Subject centered" centered)
	 (const :tag "Subject left-justified" left)
	 (const :tag "Subject right-justified" right)
	 (const :tag "Add title or description to subject" underlined)
	 (const :tag "Set subject underlined" titled)
	 (const :tag "Do not add title or description to subject" untitled)))
  :group 'org-export-koma-letter)

(defcustom org-koma-letter-use-backaddress nil
  "Non-nil prints return address in line above to address.
This option can also be set with the OPTIONS keyword, e.g.:
\"backaddress:t\"."
  :group 'org-export-koma-letter
  :type 'boolean)

(defcustom org-koma-letter-use-foldmarks t
  "Configure appearance of folding marks.

When t, activate default folding marks.  When nil, do not insert
folding marks at all.  It can also be a list of symbols among the
following ones:

  `B'  Activate upper horizontal mark on left paper edge
  `b'  Deactivate upper horizontal mark on left paper edge

  `H'  Activate all horizontal marks on left paper edge
  `h'  Deactivate all horizontal marks on left paper edge

  `L'  Activate left vertical mark on upper paper edge
  `l'  Deactivate left vertical mark on upper paper edge

  `M'  Activate middle horizontal mark on left paper edge
  `m'  Deactivate middle horizontal mark on left paper edge

  `P'  Activate punch or center mark on left paper edge
  `p'  Deactivate punch or center mark on left paper edge

  `T'  Activate lower horizontal mark on left paper edge
  `t'  Deactivate lower horizontal mark on left paper edge

  `V'  Activate all vertical marks on upper paper edge
  `v'  Deactivate all vertical marks on upper paper edge

This option can also be set with the OPTIONS keyword, e.g.:
\"foldmarks:(b l m t)\"."
  :group 'org-export-koma-letter
  :type '(choice
	  (const :tag "Activate default folding marks" t)
	  (const :tag "Deactivate folding marks" nil)
	  (set
	   :tag "Configure folding marks"
	   (const :tag "Activate upper horizontal mark on left paper edge" B)
	   (const :tag "Deactivate upper horizontal mark on left paper edge" b)
	   (const :tag "Activate all horizontal marks on left paper edge" H)
	   (const :tag "Deactivate all horizontal marks on left paper edge" h)
	   (const :tag "Activate left vertical mark on upper paper edge" L)
	   (const :tag "Deactivate left vertical mark on upper paper edge" l)
	   (const :tag "Activate middle horizontal mark on left paper edge" M)
	   (const :tag "Deactivate middle horizontal mark on left paper edge" m)
	   (const :tag "Activate punch or center mark on left paper edge" P)
	   (const :tag "Deactivate punch or center mark on left paper edge" p)
	   (const :tag "Activate lower horizontal mark on left paper edge" T)
	   (const :tag "Deactivate lower horizontal mark on left paper edge" t)
	   (const :tag "Activate all vertical marks on upper paper edge" V)
	   (const :tag "Deactivate all vertical marks on upper paper edge" v))))

(defcustom org-koma-letter-use-phone nil
  "Non-nil prints sender's phone number.
This option can also be set with the OPTIONS keyword, e.g.:
\"phone:t\"."
  :group 'org-export-koma-letter
  :type 'boolean)

(defcustom org-koma-letter-use-email nil
  "Non-nil prints sender's email address.
This option can also be set with the OPTIONS keyword, e.g.:
\"email:t\"."
  :group 'org-export-koma-letter
  :type 'boolean)

(defcustom org-koma-letter-use-place t
  "Non-nil prints the letter's place next to the date.
This option can also be set with the OPTIONS keyword, e.g.:
\"place:nil\"."
  :group 'org-export-koma-letter
  :type 'boolean)

(defcustom org-koma-letter-default-class "default-koma-letter"
  "Default class for `org-koma-letter'.
The value must be a member of `org-latex-classes'."
  :group 'org-export-koma-letter
  :type 'string)

(defcustom org-koma-letter-headline-is-opening-maybe t
  "Non-nil means a headline may be used as an opening and closing.
See also `org-koma-letter-opening' and
`org-koma-letter-closing'."
  :group 'org-export-koma-letter
  :type 'boolean)

(defcustom org-koma-letter-prefer-subject nil
  "Non-nil means title should be interpreted as subject if subject is missing.
This option can also be set with the OPTIONS keyword,
e.g. \"title-subject:t\"."
    :group 'org-export-koma-letter
    :type 'boolean)

(defconst org-koma-letter-special-tags-in-letter '(to from closing)
  "Header tags related to the letter itself.")

(defconst org-koma-letter-special-tags-after-closing '(ps encl cc)
  "Header tags to be inserted after closing.")

(defconst org-koma-letter-special-tags-after-letter '(after_letter)
  "Header tags to be inserted after closing.")

(defvar org-koma-letter-special-contents nil
  "Holds special content temporarily.")

(make-obsolete-variable 'org-koma-letter-use-title
			'org-export-with-title
			"25.1" 'set)

\f
;;; Define Back-End

(org-export-define-derived-backend 'koma-letter 'latex
  :options-alist
  '((:latex-class "LATEX_CLASS" nil org-koma-letter-default-class t)
    (:lco "LCO" nil org-koma-letter-class-option-file)
    (:author "AUTHOR" nil (org-koma-letter--get-value org-koma-letter-author) parse)
    (:author-changed-in-buffer-p "AUTHOR" nil nil t)
    (:from-address "FROM_ADDRESS" nil org-koma-letter-from-address newline)
    (:phone-number "PHONE_NUMBER" nil org-koma-letter-phone-number)
    (:email "EMAIL" nil (org-koma-letter--get-value org-koma-letter-email) t)
    (:to-address "TO_ADDRESS" nil nil newline)
    (:place "PLACE" nil org-koma-letter-place)
    (:subject "SUBJECT" nil nil parse)
    (:opening "OPENING" nil org-koma-letter-opening parse)
    (:closing "CLOSING" nil org-koma-letter-closing parse)
    (:signature "SIGNATURE" nil org-koma-letter-signature newline)
    (:special-headings nil "special-headings"
		       org-koma-letter-prefer-special-headings)
    (:special-tags nil nil (append
			    org-koma-letter-special-tags-in-letter
			    org-koma-letter-special-tags-after-closing
			    org-koma-letter-special-tags-after-letter))
    (:with-after-closing nil "after-closing-order"
			 org-koma-letter-special-tags-after-closing)
    (:with-after-letter nil "after-letter-order"
			org-koma-letter-special-tags-after-letter)
    (:with-backaddress nil "backaddress" org-koma-letter-use-backaddress)
    (:with-email nil "email" org-koma-letter-use-email)
    (:with-foldmarks nil "foldmarks" org-koma-letter-use-foldmarks)
    (:with-phone nil "phone" org-koma-letter-use-phone)
    (:with-place nil "place" org-koma-letter-use-place)
    (:with-subject nil "subject" org-koma-letter-subject-format)
    (:with-title-as-subject nil "title-subject" org-koma-letter-prefer-subject)
    (:with-headline-opening nil nil org-koma-letter-headline-is-opening-maybe)
    ;; Special properties non-nil when a setting happened in buffer.
    ;; They are used to prioritize in-buffer settings over "lco"
    ;; files.  See `org-koma-letter-template'.
    (:inbuffer-author "AUTHOR" nil 'koma-letter:empty)
    (:inbuffer-email "EMAIL" nil 'koma-letter:empty)
    (:inbuffer-phone-number "PHONE_NUMBER" nil 'koma-letter:empty)
    (:inbuffer-place "PLACE" nil 'koma-letter:empty)
    (:inbuffer-signature "SIGNATURE" nil 'koma-letter:empty)
    (:inbuffer-with-backaddress nil "backaddress" 'koma-letter:empty)
    (:inbuffer-with-email nil "email" 'koma-letter:empty)
    (:inbuffer-with-foldmarks nil "foldmarks" 'koma-letter:empty)
    (:inbuffer-with-phone nil "phone" 'koma-letter:empty)
    (:inbuffer-with-place nil "place" 'koma-letter:empty))
  :translate-alist '((export-block . org-koma-letter-export-block)
		     (export-snippet . org-koma-letter-export-snippet)
		     (headline . org-koma-letter-headline)
		     (keyword . org-koma-letter-keyword)
		     (template . org-koma-letter-template))
  :menu-entry
  '(?k "Export with KOMA Scrlttr2"
       ((?L "As LaTeX buffer" org-koma-letter-export-as-latex)
	(?l "As LaTeX file" org-koma-letter-export-to-latex)
	(?p "As PDF file" org-koma-letter-export-to-pdf)
	(?o "As PDF file and open"
	    (lambda (a s v b)
	      (if a (org-koma-letter-export-to-pdf t s v b)
		(org-open-file (org-koma-letter-export-to-pdf nil s v b))))))))


\f
;;; Helper functions

(defun org-koma-letter-email ()
  "Return the current `user-mail-address'."
  user-mail-address)

;; The following is taken from/inspired by ox-grof.el
;; Thanks, Luis!

(defun org-koma-letter--get-tagged-contents (key)
  "Get contents from a headline tagged with KEY.
The contents is stored in `org-koma-letter-special-contents'."
  (cdr (assoc-string (org-koma-letter--get-value key)
		     org-koma-letter-special-contents)))

(defun org-koma-letter--get-value (value)
  "Turn value into a string whenever possible.
Determines if VALUE is nil, a string, a function or a symbol and
return a string or nil."
  (when value
    (cond ((stringp value) value)
	  ((functionp value) (funcall value))
	  ((symbolp value) (symbol-name value))
	  (t value))))

(defun org-koma-letter--special-contents-as-macro
    (keywords &optional keep-newlines no-tag)
  "Process KEYWORDS members of `org-koma-letter-special-contents'.
KEYWORDS is a list of symbols.  Return them as a string to be
formatted.

The function is used for inserting content of special headings
such as PS.

If KEEP-NEWLINES is non-nil leading and trailing newlines are not
removed.  If NO-TAG is non-nil the content in
`org-koma-letter-special-contents' are not wrapped in a macro
named whatever the members of KEYWORDS are called."
  (mapconcat
   (lambda (keyword)
     (let* ((name (org-koma-letter--get-value keyword))
	    (value (org-koma-letter--get-tagged-contents name)))
       (cond ((not value) nil)
	     (no-tag (if keep-newlines value (org-trim value)))
	     (t (format "\\%s{%s}\n"
			name
			(if keep-newlines value (org-trim value)))))))
   keywords
   ""))

(defun org-koma-letter--determine-to-and-from (info key)
  "Given INFO determine KEY for the letter.
KEY should be `to' or `from'.

`ox-koma-letter' allows two ways to specify TO and FROM.  If both
are present return the preferred one as determined by
`org-koma-letter-prefer-special-headings'."
  (let ((option (org-string-nw-p
		 (plist-get info (if (eq key 'to) :to-address :from-address))))
	(headline (org-koma-letter--get-tagged-contents key)))
    (replace-regexp-in-string
     "\n" "\\\\\\\\\n"
     (org-trim
      (if (plist-get info :special-headings) (or headline option "")
	(or option headline ""))))))


\f
;;; Transcode Functions

;;;; Export Block

(defun org-koma-letter-export-block (export-block contents info)
  "Transcode an EXPORT-BLOCK element into KOMA Scrlttr2 code.
CONTENTS is nil.  INFO is a plist used as a communication
channel."
  (when (member (org-element-property :type export-block) '("KOMA-LETTER" "LATEX"))
    (org-remove-indentation (org-element-property :value export-block))))

;;;; Export Snippet

(defun org-koma-letter-export-snippet (export-snippet contents info)
  "Transcode an EXPORT-SNIPPET object into KOMA Scrlttr2 code.
CONTENTS is nil.  INFO is a plist used as a communication
channel."
  (when (memq (org-export-snippet-backend export-snippet) '(latex koma-letter))
    (org-element-property :value export-snippet)))

;;;; Keyword

(defun org-koma-letter-keyword (keyword contents info)
  "Transcode a KEYWORD element into KOMA Scrlttr2 code.
CONTENTS is nil.  INFO is a plist used as a communication
channel."
  (let ((key (org-element-property :key keyword))
	(value (org-element-property :value keyword)))
    ;; Handle specifically KOMA-LETTER keywords.  Otherwise, fallback
    ;; to `latex' back-end.
    (if (equal key "KOMA-LETTER") value
      (org-export-with-backend 'latex keyword contents info))))

;; Headline

(defun org-koma-letter-headline (headline contents info)
  "Transcode a HEADLINE element from Org to LaTeX.
CONTENTS holds the contents of the headline.  INFO is a plist
holding contextual information.

Note that if a headline is tagged with a tag from
`org-koma-letter-special-tags' it will not be exported, but
stored in `org-koma-letter-special-contents' and included at the
appropriate place."
  (let ((special-tag (org-koma-letter--special-tag headline info)))
    (if (not special-tag)
	contents
      (push (cons special-tag contents) org-koma-letter-special-contents)
      "")))

(defun org-koma-letter--special-tag (headline info)
  "Non-nil if HEADLINE is a special headline.
INFO is a plist holding contextual information.  Return first
special tag headline."
  (let ((special-tags (plist-get info :special-tags)))
    (catch 'exit
      (dolist (tag (org-export-get-tags headline info))
	(let ((tag (assoc-string tag special-tags)))
	  (when tag (throw 'exit tag)))))))

(defun org-koma-letter--keyword-or-headline (plist-key pred info)
  "Return the correct version of opening or closing.
PLIST-KEY should be a key in info, typically :opening
or :closing.  PRED is a predicate run on headline to determine
which title to use which takes two arguments, a headline element
and an info plist.  INFO is a plist holding contextual
information.  Return the preferred candidate for the exported of
PLIST-KEY."
  (let* ((keyword-candidate (plist-get info plist-key))
	 (headline-candidate (when (and (plist-get info :with-headline-opening)
					(or (plist-get info :special-headings)
					    (not keyword-candidate)))
			       (org-element-map (plist-get info :parse-tree)
				   'headline
				 (lambda (head)
				   (when (funcall pred head info)
				     (org-element-property :title head)))
				 info t))))
    (org-export-data (or headline-candidate keyword-candidate "") info)))

;;;; Template

(defun org-koma-letter-template (contents info)
  "Return complete document string after KOMA Scrlttr2 conversion.
CONTENTS is the transcoded contents string.  INFO is a plist
holding export options."
  (concat
   ;; Time-stamp.
   (and (plist-get info :time-stamp-file)
        (format-time-string "%% Created %Y-%m-%d %a %H:%M\n"))
   ;; LaTeX compiler
   (org-latex--insert-compiler info)
   ;; Document class and packages.
   (org-latex--make-preamble info)
   ;; Settings.  They can come from three locations, in increasing
   ;; order of precedence: global variables, LCO files and in-buffer
   ;; settings.  Thus, we first insert settings coming from global
   ;; variables, then we insert LCO files, and, eventually, we insert
   ;; settings coming from buffer keywords.
   (org-koma-letter--build-settings 'global info)
   (mapconcat #'(lambda (file) (format "\\LoadLetterOption{%s}\n" file))
	      (org-split-string (or (plist-get info :lco) "") " ")
	      "")
   (org-koma-letter--build-settings 'buffer info)
   ;; From address.
   (let ((from-address (org-koma-letter--determine-to-and-from info 'from)))
     (when (org-string-nw-p from-address)
       (format "\\setkomavar{fromaddress}{%s}\n" from-address)))
   ;; Date.
   (format "\\date{%s}\n" (org-export-data (org-export-get-date info) info))
   ;; Hyperref, document start, and subject and title.
   (let* ((with-subject (plist-get info :with-subject))
	  (with-title (plist-get info :with-title))
	  (title-as-subject (and with-subject
				 (plist-get info :with-title-as-subject)))
	  (subject* (org-string-nw-p
		     (org-export-data (plist-get info :subject) info)))
	  (title* (and with-title
		       (org-string-nw-p
			(org-export-data (plist-get info :title) info))))
	  (subject (cond ((not with-subject) nil)
			 (title-as-subject (or subject* title*))
			 (t subject*)))
	  (title (cond ((not with-title) nil)
		       (title-as-subject (and subject* title*))
		       (t title*)))
	  (hyperref-template (plist-get info :latex-hyperref-template))
	  (spec (append (list (cons ?t (or title subject "")))
			(org-latex--format-spec info))))
     (concat
      (when (and with-subject (not (eq with-subject t)))
	(format "\\KOMAoption{subject}{%s}\n"
		(if (symbolp with-subject) with-subject
		  (mapconcat #'symbol-name with-subject ","))))
      ;; Hyperref.
      (format-spec hyperref-template spec)
      ;; Document start.
      "\\begin{document}\n\n"
      ;; Subject and title.
      (when subject (format "\\setkomavar{subject}{%s}\n" subject))
      (when title (format "\\setkomavar{title}{%s}\n" title))
      (when (or (org-string-nw-p title) (org-string-nw-p subject)) "\n")))
   ;; Letter start.
   (format "\\begin{letter}{%%\n%s}\n\n"
	   (org-koma-letter--determine-to-and-from info 'to))
   ;; Opening.
   (format "\\opening{%s}\n\n"
	   (org-koma-letter--keyword-or-headline
	    :opening (lambda (h i) (not (org-koma-letter--special-tag h i)))
	    info))
   ;; Letter body.
   contents
   ;; Closing.
   (format "\\closing{%s}\n"
	   (org-koma-letter--keyword-or-headline
	    :closing (lambda (h i) (eq (org-koma-letter--special-tag h i)
				'closing))
	    info))
   (org-koma-letter--special-contents-as-macro
    (plist-get info :with-after-closing))
   ;; Letter end.
   "\n\\end{letter}\n"
   (org-koma-letter--special-contents-as-macro
    (plist-get info :with-after-letter) t t)
   ;; Document end.
   "\n\\end{document}"))

(defun org-koma-letter--build-settings (scope info)
  "Build settings string according to type.
SCOPE is either `global' or `buffer'.  INFO is a plist used as
a communication channel."
  (let ((check-scope
         (function
          ;; Non-nil value when SETTING was defined in SCOPE.
          (lambda (setting)
            (let ((property (intern (format ":inbuffer-%s" setting))))
              (if (eq scope 'global)
		  (eq (plist-get info property) 'koma-letter:empty)
                (not (eq (plist-get info property) 'koma-letter:empty))))))))
    (concat
     ;; Name.
     (let ((author (plist-get info :author)))
       (and author
            (funcall check-scope 'author)
            (format "\\setkomavar{fromname}{%s}\n"
                    (org-export-data author info))))
     ;; Email.
     (let ((email (plist-get info :email)))
       (and email
            (funcall check-scope 'email)
            (format "\\setkomavar{fromemail}{%s}\n" email)))
     (and (funcall check-scope 'with-email)
          (format "\\KOMAoption{fromemail}{%s}\n"
                  (if (plist-get info :with-email) "true" "false")))
     ;; Phone number.
     (let ((phone-number (plist-get info :phone-number)))
       (and (org-string-nw-p phone-number)
            (funcall check-scope 'phone-number)
            (format "\\setkomavar{fromphone}{%s}\n" phone-number)))
     (and (funcall check-scope 'with-phone)
          (format "\\KOMAoption{fromphone}{%s}\n"
                  (if (plist-get info :with-phone) "true" "false")))
     ;; Signature.
     (let* ((heading-val
	     (and (plist-get info :with-headline-opening)
		  (org-string-nw-p
		   (org-trim
		    (org-export-data
		     (org-koma-letter--get-tagged-contents 'closing)
		     info)))))
	    (signature (org-string-nw-p (plist-get info :signature)))
	    (signature-scope (funcall check-scope 'signature)))
       (and (or (and signature signature-scope)
		heading-val)
	    (not (and (eq scope 'global) heading-val))
	    (format "\\setkomavar{signature}{%s}\n"
		    (if signature-scope signature heading-val))))
     ;; Back address.
     (and (funcall check-scope 'with-backaddress)
          (format "\\KOMAoption{backaddress}{%s}\n"
                  (if (plist-get info :with-backaddress) "true" "false")))
     ;; Place.
     (let ((with-place-set (funcall check-scope 'with-place))
	   (place-set (funcall check-scope 'place)))
       (and (or (and with-place-set place-set)
		(and (eq scope 'buffer) (or with-place-set place-set)))
	    (format "\\setkomavar{place}{%s}\n"
		    (if (plist-get info :with-place) (plist-get info :place)
		      ""))))
     ;; Folding marks.
     (and (funcall check-scope 'with-foldmarks)
          (let ((foldmarks (plist-get info :with-foldmarks)))
	    (cond ((consp foldmarks)
		   (format "\\KOMAoptions{foldmarks=true,foldmarks=%s}\n"
			   (mapconcat #'symbol-name foldmarks "")))
		  (foldmarks "\\KOMAoptions{foldmarks=true}\n")
		  (t "\\KOMAoptions{foldmarks=false}\n")))))))


\f
;;; Commands

;;;###autoload
(defun org-koma-letter-export-as-latex
  (&optional async subtreep visible-only body-only ext-plist)
  "Export current buffer as a KOMA Scrlttr2 letter.

If narrowing is active in the current buffer, only export its
narrowed part.

If a region is active, export that region.

A non-nil optional argument ASYNC means the process should happen
asynchronously.  The resulting buffer should be accessible
through the `org-export-stack' interface.

When optional argument SUBTREEP is non-nil, export the sub-tree
at point, extracting information from the headline properties
first.

When optional argument VISIBLE-ONLY is non-nil, don't export
contents of hidden elements.

When optional argument BODY-ONLY is non-nil, only write code
between \"\\begin{letter}\" and \"\\end{letter}\".

EXT-PLIST, when provided, is a proeprty list with external
parameters overriding Org default settings, but still inferior to
file-local settings.

Export is done in a buffer named \"*Org KOMA-LETTER Export*\".  It
will be displayed if `org-export-show-temporary-export-buffer' is
non-nil."
  (interactive)
  (let (org-koma-letter-special-contents)
    (org-export-to-buffer 'koma-letter "*Org KOMA-LETTER Export*"
      async subtreep visible-only body-only ext-plist
      (lambda () (LaTeX-mode)))))

;;;###autoload
(defun org-koma-letter-export-to-latex
  (&optional async subtreep visible-only body-only ext-plist)
  "Export current buffer as a KOMA Scrlttr2 letter (tex).

If narrowing is active in the current buffer, only export its
narrowed part.

If a region is active, export that region.

A non-nil optional argument ASYNC means the process should happen
asynchronously.  The resulting file should be accessible through
the `org-export-stack' interface.

When optional argument SUBTREEP is non-nil, export the sub-tree
at point, extracting information from the headline properties
first.

When optional argument VISIBLE-ONLY is non-nil, don't export
contents of hidden elements.

When optional argument BODY-ONLY is non-nil, only write code
between \"\\begin{letter}\" and \"\\end{letter}\".

EXT-PLIST, when provided, is a property list with external
parameters overriding Org default settings, but still inferior to
file-local settings.

When optional argument PUB-DIR is set, use it as the publishing
directory.

Return output file's name."
  (interactive)
  (let ((outfile (org-export-output-file-name ".tex" subtreep))
	(org-koma-letter-special-contents))
    (org-export-to-file 'koma-letter outfile
      async subtreep visible-only body-only ext-plist)))

;;;###autoload
(defun org-koma-letter-export-to-pdf
  (&optional async subtreep visible-only body-only ext-plist)
  "Export current buffer as a KOMA Scrlttr2 letter (pdf).

If narrowing is active in the current buffer, only export its
narrowed part.

If a region is active, export that region.

A non-nil optional argument ASYNC means the process should happen
asynchronously.  The resulting file should be accessible through
the `org-export-stack' interface.

When optional argument SUBTREEP is non-nil, export the sub-tree
at point, extracting information from the headline properties
first.

When optional argument VISIBLE-ONLY is non-nil, don't export
contents of hidden elements.

When optional argument BODY-ONLY is non-nil, only write code
between \"\\begin{letter}\" and \"\\end{letter}\".

EXT-PLIST, when provided, is a property list with external
parameters overriding Org default settings, but still inferior to
file-local settings.

Return PDF file's name."
  (interactive)
  (let ((file (org-export-output-file-name ".tex" subtreep))
	(org-koma-letter-special-contents))
    (org-export-to-file 'koma-letter file
      async subtreep visible-only body-only ext-plist
      (lambda (file) (org-latex-compile file)))))


(provide 'ox-koma-letter)
;;; ox-koma-letter.el ends here

debug log:

solving 3231d34 ...
found 3231d34 in https://git.savannah.gnu.org/cgit/emacs.git

(*) Git path names are given by the tree(s) the blob belongs to.
    Blobs themselves have no identifier aside from the hash of its contents.^

Code repositories for project(s) associated with this external index

	https://git.savannah.gnu.org/cgit/emacs.git
	https://git.savannah.gnu.org/cgit/emacs/org-mode.git

This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.