aboutsummaryrefslogtreecommitdiff
path: root/src/guile/skribilo.scm
blob: 1014d8d3e9ccfd5b4365d0faa77dc35d3436255b (plain)
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
;;; skribilo.scm  --  The Skribilo document processor.
;;;
;;; Copyright 2005, 2006, 2007, 2008, 2009, 2011, 2012, 2013,
;;;   2015, 2016  Ludovic Court�s <ludo@gnu.org>
;;; Copyright 2003, 2004  Erick Gallesio - I3S-CNRS/ESSI <eg@unice.fr>
;;;
;;;
;;; This file is part of Skribilo.
;;;
;;; Skribilo 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.
;;;
;;; Skribilo 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 Skribilo.  If not, see <http://www.gnu.org/licenses/>.

;;; Commentary:
;;;
;;; Usage: skribilo [ARGS]
;;;
;;; Process a skribilo document using options from the command-line.
;;;
;;; Code:



(define-module (skribilo)
  :autoload    (skribilo module) (make-user-module *skribilo-user-module*)
  :autoload    (skribilo engine) (*current-engine*)
  :autoload    (skribilo reader) (*document-reader*)

  :use-module  (skribilo utils syntax)
  :use-module  (skribilo evaluator)
  :use-module  (skribilo debug)
  :use-module  (skribilo parameters)
  :use-module  (skribilo config)

  :use-module  (srfi srfi-1)
  :use-module  (srfi srfi-13)
  :use-module  (srfi srfi-37)
  :use-module  (srfi srfi-39)

  :export (skribilo))


;; Install the Skribilo module syntax reader.
(skribilo-module-syntax)

(if (not (keyword? :kw))
    (error "guile-reader sucks"))



;;;
;;; Help.
;;;

(define (skribilo-show-help)
  (display (_ "Usage: skribilo [OPTIONS] [INPUT]"))
  (display (_ "
Process Skribilo document from file INPUT (or standard input) using the
specified reader syntax or the 'skribe' syntax, and produce its output using
the specified engine or the 'html' engine.
"))
  (newline)
  (display (_ "\
  -R, --reader=READER    use READER to parse the input file;
                         e.g., 'skribe' (default) or 'outline'\n"))
  (display (_ "\
  -t, --target=ENGINE    use ENGINE as the output engine; e.g., 'html'\n"))
  (display (_ "\
  -c, --custom=C=VAL     use VAL as the value of ENGINE's custom C\n"))
  (display (_ "\
  -o, --output=FILE      write output to FILE\n"))
  (display (_ "\
      --compat=COMPAT    use COMPAT as the compatibility layer; e.g., 'skribe'\n"))
  (newline)
  (display (_ "\
  -I, --doc-path=DIR     prepend DIR to the document include path\n"))
  (display (_ "\
  -B, --bib-path=DIR     prepend DIR to the bibliography include path\n"))
  (display (_ "\
  -S, --source-path=DIR  prepend DIR to the source include path\n"))
  (display (_ "\
  -P, --image-path=DIR   prepend DIR to the image include path\n"))
  (display (_ "\
  -U, --sui-path=DIR     prepend DIR to the Skribe URL Index (SUI) search path\n"))
  (newline)
  (display (_ "\
  -b, --base=BASE        strip BASE from all hyperlinks ('html' engine)\n"))
  (display (_ "\
  -e, --eval=EXPR        prepend EXPR to the list of expressions to be
                         evaluted before the input file is processed\n"))
  (display (_ "\
  -p, --preload=FILE     preload FILE before processing the input file\n"))
  (newline)
  (display (_ "\
  -v, --verbose[=LEVEL]  be verbose, unless LEVEL is 0\n"))
  (display (_ "\
  -w, --warning[=LEVEL]  issue warnings, unless LEVEL is 0\n"))
  (display (_ "\
  -g, --debug[=ARG]      issue debugging output, unless ARG is 0; if ARG is
                         not a number, it is interpreted as a symbol to be
                         watched\n"))
  (display (_ "\
      --no-color         disable colored debugging output\n"))
  (newline)
  (display (_ "\
  -h, --help             display this help text and exit\n"))
  (display (_ "\
  -V, --version          display version information and exit\n"))
  (newline)
  (format #t (_ "\
Report bugs to <~a>.~%")
          (skribilo-bug-report-address)))

(define (skribilo-show-version)
  (format #t "skribilo ~a~%" (skribilo-version)))

(define (leave fmt . args)
  (apply format (current-error-port) (string-append fmt "~%") args)
  (exit 1))



;;;
;;; Document processing.
;;;

(define *skribilo-output-port* (make-parameter (current-output-port)))

(define (doskribe module)
  (let ((output-port (current-output-port))
	(user-module (current-module)))
    (dynamic-wind
	(lambda ()
	  ;; FIXME: Using this technique, anything written to `stderr' will
	  ;; also end up in the output file (e.g. Guile warnings).
	  (set-current-output-port (*skribilo-output-port*))
          (set-current-module module)
          (*skribilo-user-module* module))
	(lambda ()
	  ;;(format #t "engine is ~a~%" (*current-engine*))
	  (evaluate-document-from-port (current-input-port)
				       (*current-engine*)))
	(lambda ()
	  (set-current-output-port output-port)
	  (set-current-module user-module)
          (*skribilo-user-module* #f)))))



;;;
;;; Argument parsing.
;;;

(define (make-path-processor key)
  (lambda (opt name arg result)
    (let ((path (assoc key result)))
      (alist-cons key (if (pair? path)
                          (cons arg (cdr path))
                          (list arg))
                  (alist-delete key result eq?)))))

(define (make-level-processor key default)
  (lambda (opt name arg result)
    (alist-cons key (if (string? arg)
                        (or (string->number arg) default)
                        default)
                result)))

(define %options
  ;; Specifications of the command-line options.
  (list (option '(#\h "help") #f #f
                (lambda args
                  (skribilo-show-help)
                  (exit 0)))
        (option '(#\V "version") #f #f
                (lambda args
                  (skribilo-show-version)
                  (exit 0)))

        (option '(#\R "reader") #t #f
                (lambda (opt name arg result)
                  (alist-cons :reader arg result)))
        (option '(#\t "target") #t #f
                (lambda (opt name arg result)
                  (alist-cons :target arg result)))
        (option '(#\c "custom") #t #f
                (lambda (opt name arg result)
                  (let ((=-pos (string-index arg #\=)))
                    (if (not =-pos)
                        (leave (_ "~a: missing value for custom") arg)
                        (let ((custom (string-take arg =-pos))
                              (value  (string-drop arg (+ =-pos 1))))
                          (catch 'read-error
                            (lambda ()
                              (let ((custom (string->symbol custom))
                                    (value
                                     (with-input-from-string value read))
                                    (result
                                     (alist-delete :customs result eq?))
                                    (customs
                                     (assoc-ref result :customs)))
                                (alist-cons
                                 :customs
                                 (alist-cons custom value customs)
                                 result)))
                            (lambda (key . args)
                              (leave (_ "~a: invalid custom value")
                                     value))))))))
        (option '(#\o "output") #t #f
                (lambda (opt name arg result)
                  (if (assoc :output result)
                      (leave "~a: only one output at a time" arg)
                      (alist-cons :output arg result))))

        (option '("compat") #t #f
                (lambda (opt name arg result)
                  (alist-cons :compat arg result)))
        (option '(#\I "doc-path") #t #f
                (make-path-processor :doc-path))
        (option '(#\B "bib-path") #t #f
                (make-path-processor :bib-path))
        (option '(#\S "source-path") #t #f
                (make-path-processor :source-path))
        (option '(#\P "image-path") #t #f
                (make-path-processor :image-path))
        (option '(#\U "sui-path") #t #f
                (make-path-processor :sui-path))

        (option '(#\b "base") #t #f
                (lambda (opt name arg result)
                  (if (assoc :ref-base result)
                      (leave "~a: only one reference base at a time" arg)
                      (alist-cons :ref-base arg result))))
        (option '(#\e "eval") #t #f
                (lambda (opt name arg result)
                  (let ((expr-list (assoc :expressions result))
                        (expr      (with-input-from-string arg read)))
                    (alist-cons :expressions
                                (if (pair? expr-list)
                                    (cons expr (cdr expr-list))
                                    (list expr))
                                result))))
        (option '(#\p "preload") #t #f
                (lambda (opt name arg result)
                  (let ((preloads (assoc :preloads result)))
                    (alist-cons :preloads
                                (if (pair? preloads)
                                    (cons arg preloads)
                                    (list arg))
                                result))))

        (option '(#\v "verbose") #f #t
                (make-level-processor :verbose 0))
        (option '(#\w "warning") #f #t
                (make-level-processor :warning 1))
        (option '(#\g "debug") #f #t
                (lambda (opt name arg result)
                  (let ((num (if arg
                                 (string->number arg)
                                 1)))
                    (if (integer? num)
                        (alist-cons :debug num result)
                        (let ((watched (assoc :watched-symbols result)))
                          (alist-cons :watched-symbols
                                      (cons (string->symbol arg)
                                            (cdr watched))
                                      result))))))
        (option '("no-color") #f #f
                (lambda (opt name arg result)
                  (alist-cons :no-color? #t result)))))

(define %default-options
  ;; Default value of various command-line options.
  '((:debug     . 0)
    (:warning   . 1)
    (:verbose   . 0)
    (:reader    . "skribe")
    (:target    . "html")
    (:compat    . "skribilo")
    (:doc-path    ".")
    (:bib-path    ".")
    (:source-path ".")
    (:image-path  ".")
    (:sui-path    ".")
    (:customs)
    (:watched-symbols)))

(define (parse-args args)
  "Parse argument list @var{args} and return an alist with all the relevant
options."
  (args-fold args %options
             (lambda (opt name arg result)
               (leave "~A: unrecognized option" opt))
             (lambda (file result)
               (if (assoc :input result)
                   (leave "~a: only one input file at a time" file)
                   (alist-cons :input file result)))
             %default-options))


;;;
;;; The program.
;;;

(define (skribilo . args)
  ;; Install the user-specified locale.
  (catch 'system-error
    (lambda _
      (setlocale LC_ALL ""))
    (lambda args
      (format (current-error-port)
              (_ "warning: failed to install locale: ~a~%")
              (strerror (system-error-errno args)))))

  ;; Tell gettext where to look for message catalogs.
  (bindtextdomain %skribilo-text-domain (skribilo-locale-directory))
  (textdomain %skribilo-text-domain)

  (let* ((options           (parse-args args))

	 (reader-name       (string->symbol (assoc-ref options :reader)))
	 (engine            (string->symbol (assoc-ref options :target)))
         (customs           (assoc-ref options :customs))
         (input-file        (assoc-ref options :input))
	 (output-file       (assoc-ref options :output))

         (verbosity-level   (assoc-ref options :verbose))
	 (debugging-level   (assoc-ref options :debug))
	 (warning-level     (assoc-ref options :warning))
         (watched-symbols   (assoc-ref options :watched-symbols))
         (color?            (not (assoc-ref options :no-color?)))

         (ref-base          (assoc-ref options :ref-base))
         (expressions       (assoc-ref options :expressions))

	 (load-path         (assoc-ref options :doc-path))
	 (bib-path          (assoc-ref options :bib-path))
	 (source-path       (assoc-ref options :source-path))
	 (image-path        (assoc-ref options :image-path))
         (sui-path          (assoc-ref options :sui-path))
         (compat            (assoc-ref options :compat))
	 (preloads          (assoc-ref options :preloads))
	 ;;(variants          '()) ;; FIXME: Implement
         )

    (define user-module
      ;; The environment in which the document is evaluated.
      (make-user-module (string->symbol compat)))

    (if (> (*debug*) 4)
	(set! %load-hook
	      (lambda (file)
		(format #t "~~ loading '~a'...~%" file))))


    (parameterize ((*document-reader*   (make-reader reader-name))
		   (*current-engine*    engine)
                   (*ref-base*          ref-base)
		   (*document-path*     load-path)
		   (*bib-path*          bib-path)
		   (*source-path*       source-path)
		   (*image-path*        image-path)
                   (*sui-path*          sui-path)
		   (*debug*             debugging-level)
                   (*debug-use-colors?* color?)
                   (*watched-symbols*   watched-symbols)
		   (*warning*           warning-level)
		   (*verbose*           verbosity-level))

      ;; Load the user rc file (FIXME)
      ;;(load-rc)

      (or (null? customs)
          (let ((engine (lookup-engine engine)))
            (for-each (lambda (custom+value)
                        (let ((custom (car custom+value))
                              (value  (cdr custom+value)))
                          (engine-custom-set! engine custom value)))
                      customs)))

      ;; Evaluate expressions passed as `--eval'.
      (for-each (lambda (expr)
                  (eval expr user-module))
                (or expressions '()))

      ;; Load files passed as `--preload' using the default reader.
      (for-each (lambda (f)
                  (save-module-excursion
                   (lambda ()
                     (set-current-module user-module)
                     (load f))))
		(or preloads '()))

      ;; Load the specified variants. (FIXME)
;;       (for-each (lambda (x)
;; 		  (skribe-load (format #f "~a.skr" x)
;; 			       :engine (*current-engine*)))
;; 		(reverse! variants))

      (if (and output-file (file-exists? output-file))
          (delete-file output-file))

      ;; Choose UTF-8 as the default encoding so that string ports will
      ;; accept all of Unicode.
      (default-to-utf-8
        (parameterize ((*destination-file* output-file)
                       (*source-file*      input-file)
                       (*skribilo-output-port*
                        (if (string? output-file)
                            (open-output-file output-file)
                            (current-output-port))))

          (setvbuf (*skribilo-output-port*) _IOFBF 16384)

          (if input-file
              (with-input-from-file input-file
                (lambda ()
                  (set-correct-file-encoding!)
                  (doskribe user-module)))
              (doskribe user-module))

          ;; Make sure the output port is flushed before we leave.
          (force-output (*skribilo-output-port*)))))))


;;; Local Variables:
;;; coding: latin-1
;;; End:

;;; skribilo ends here.