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
|
;; $Id: dblink.dsl,v 1.2 2004/05/17 14:38:50 tony2001 Exp $
;;
;; This file is part of the Modular DocBook Stylesheet distribution.
;; See ../README or http://docbook.sourceforge.net/projects/dsssl/
;;
;; ========================= LINKS AND ANCHORS ==========================
(element link
(let* ((endterm (attribute-string (normalize "endterm")))
(linkend (attribute-string (normalize "linkend")))
(target (element-with-id linkend))
(etarget (if endterm
(element-with-id endterm)
(empty-node-list))))
;; It isn't necessary to catch either of these errors. The normal
;; ID/IDREF processing in Jade will catch them, and if -wno-idref
;; is used, then it's your gun, your bullet, and your foot.
;; (if (node-list-empty? target)
;; (error (string-append "Link to missing ID '" linkend "'"))
;; (empty-sosofo))
;; (if (and endterm (node-list-empty? etarget))
;; (error (string-append "EndTerm to missing ID '" endterm "' on Link"))
;; (empty-sosofo))
(if (node-list-empty? target)
(process-children)
(make element gi: "A"
attributes: (list (list "HREF" (href-to target)))
(if (and endterm (not (node-list-empty? etarget)))
(with-mode xref-endterm-mode (process-node-list etarget))
(process-children))))))
(element ulink
(make element gi: "A"
attributes: (list
(list "HREF" (attribute-string (normalize "url")))
(list "TARGET" "_top"))
(if (node-list-empty? (children (current-node)))
(literal (attribute-string (normalize "url")))
(process-children))))
(element anchor
(make element gi: "A"
attributes: (list
(list "NAME" (attribute-string (normalize "id"))))
(empty-sosofo)))
(element beginpage (empty-sosofo))
;; ======================================================================
(define (olink-link)
;; This is an olink without a TARGETDOCENT, treat it as a link within
;; the same document.
(let* ((localinfo (normalize (attribute-string (normalize "localinfo"))))
(target (element-with-id localinfo))
(linkmode (attribute-string (normalize "linkmode")))
(modespec (if linkmode (element-with-id linkmode) (empty-node-list)))
(xreflabel (if (node-list-empty? modespec)
#f
(attribute-string (normalize "xreflabel") modespec)))
(href (if (node-list-empty? target)
(error
(string-append "OLink to missing ID '" localinfo "'"))
(href-to target)))
(linktext (strip (data-of (current-node)))))
(make element gi: "A"
attributes: (list (list "HREF" href)
(list "CLASS" "OLINK"))
(if (equal? linktext "")
(if xreflabel
(xref-general target xreflabel)
(xref-general target))
(process-children)))))
(define (olink-href target modespec)
(let* ((pubid (entity-public-id target))
(sysid (system-id-filename target))
(localinfo (normalize (attribute-string (normalize "localinfo"))))
(qident (if pubid
(string-append %olink-pubid% (url-encode-string pubid))
(string-append %olink-sysid% (url-encode-string sysid))))
(qfragid (if localinfo
(string-append %olink-fragid%
(url-encode-string localinfo))
""))
(lb-href (string-append %olink-resolution% qident qfragid))
(modetext (if (node-list-empty? modespec) "" (data-of modespec)))
(href (if (equal? (strip modetext) "")
lb-href
(if localinfo
(string-append
modetext "#" (url-encode-string localinfo))
modetext))))
href))
(define (olink-simple)
;; Assumptions:
;; - The TARGETDOCENT is identified by a public ID
;; - LOLCALINFO contains the ID value (i.e. HREF fragment identifier) of
;; the target resource
;; - If the element has no content, the title extracted by
;; (olink-resource-title) should be used
;; - The (olink-resource-title) function can deduce the title from
;; the pubid and the sysid
;; - %olink-resolution% is the prefix to use on URLs (to point to a
;; cgi-bin script, or whatever you can make work for you)
;; - %olink-pubid% identifies the pubid in the query
;; - %olink-fragid% identifies the fragment identifier in the query
(let* ((target (attribute-string (normalize "targetdocent")))
(pubid (entity-public-id target))
(sysid (system-id-filename target))
(title (olink-resource-title pubid sysid))
(href (olink-href target (empty-node-list)))
(linktext (strip (data-of (current-node)))))
(make element gi: "A"
attributes: (list (list "HREF" href)
(list "CLASS" "OLINK"))
(if (equal? linktext "")
(make element gi: "I" (literal title))
(process-children)))))
(define (olink-outline-xref olroot target linktext)
(let* ((name (attribute-string (normalize "name") target))
(label (attribute-string (normalize "label") target))
(title (select-elements (children target) (normalize "ttl")))
(substitute (list
(list "%g" (if name (literal name) (literal "")))
(list "%n" (if label (literal label) (literal "")))
(list "%t" (with-mode olink-title-mode
(process-node-list title)))))
(tlist (match-split-list linktext (assoc-objs substitute))))
(string-list-sosofo tlist substitute)))
(define (olink-outline)
(let* ((target (attribute-string (normalize "targetdocent")))
(localinfo (normalize (attribute-string (normalize "localinfo"))))
(sysid (entity-generated-system-id target))
(basename (trim-string sysid '(".sgm" ".xml" ".sgml")))
(olinkfile (string-append basename %olink-outline-ext%))
(olinkdoc (sgml-parse olinkfile))
(olinkroot (node-property 'document-element olinkdoc))
(olnode (if localinfo
(element-with-id localinfo olinkroot)
olinkroot))
(linkmode (attribute-string (normalize "linkmode")))
(modespec (if linkmode (element-with-id linkmode) (empty-node-list)))
(xreflabel (if (node-list-empty? modespec)
""
(attribute-string (normalize "xreflabel") modespec)))
(href (if (equal? (attribute-string (normalize "type")) "href")
(attribute-string (normalize "href") olnode)
(olink-href target modespec)))
(linktext (strip (data-of (current-node)))))
(make element gi: "A"
attributes: (list (list "HREF" href)
(list "CLASS" "OLINK"))
(if (equal? linktext "")
(olink-outline-xref olinkroot olnode xreflabel)
(process-children)))))
(element olink
(if (not (attribute-string (normalize "targetdocent")))
(olink-link)
(if (attribute-string (normalize "linkmode"))
(olink-outline)
(olink-simple))))
(mode olink-title-mode
(default (process-children))
(element ttl
(make element gi: "I"
(process-children)))
(element it
(make element gi: "I"
(process-children)))
(element tt
(make element gi: "TT"
(process-children)))
(element sub
(make element gi: "SUB"
(process-children)))
(element sup
(make element gi: "SUP"
(process-children)))
)
;; ======================================================================
(element xref
(let* ((endterm (attribute-string (normalize "endterm")))
(linkend (attribute-string (normalize "linkend")))
(target (element-with-id linkend))
(xreflabel (if (node-list-empty? target)
#f
(attribute-string (normalize "xreflabel") target))))
(if (node-list-empty? target)
(error (string-append "XRef LinkEnd to missing ID '" linkend "'"))
(make element gi: "A"
attributes: (list
(list "HREF" (href-to target)))
(if xreflabel
(literal xreflabel)
(if endterm
(if (node-list-empty? (element-with-id endterm))
(error (string-append
"XRef EndTerm to missing ID '"
endterm "'"))
(with-mode xref-endterm-mode
(process-node-list (element-with-id endterm))))
(cond
((or (equal? (gi target) (normalize "biblioentry"))
(equal? (gi target) (normalize "bibliomixed")))
;; xref to the bibliography is a special case
(xref-biblioentry target))
((equal? (gi target) (normalize "co"))
;; callouts are a special case
($callout-mark$ target #f))
((equal? (gi target) (normalize "listitem"))
;; listitems are a special case
(if (equal? (gi (parent target)) (normalize "orderedlist"))
(literal (orderedlist-listitem-label-recursive target))
(error (string-append "XRef to LISTITEM only supported in ORDEREDLISTs"))))
((equal? (gi target) (normalize "varlistentry"))
(xref-varlistentry target))
((equal? (gi target) (normalize "question"))
;; questions and answers are (yet another) special case
(make sequence
(literal (gentext-element-name target))
(literal (gentext-label-title-sep target))
(literal (question-answer-label target))))
((equal? (gi target) (normalize "answer"))
;; questions and answers are (yet another) special case
(make sequence
(literal (gentext-element-name target))
(literal (gentext-label-title-sep target))
(literal (question-answer-label target))))
((equal? (gi target) (normalize "refentry"))
;; so are refentrys
(xref-refentry target))
((equal? (gi target) (normalize "refnamediv"))
;; and refnamedivs
(xref-refnamediv target))
((equal? (gi target) (normalize "glossentry"))
;; as are glossentrys
(xref-glossentry target))
((equal? (gi target) (normalize "author"))
;; and authors
(xref-author target))
((equal? (gi target) (normalize "authorgroup"))
;; and authorgroups
(xref-authorgroup target))
; this doesn't really work very well yet
; ((equal? (gi target) (normalize "substeps"))
; ;; and substeps
; (xref-substeps target))
(else
(xref-general target)))))))))
(define (xref-refentry target)
;; refmeta/refentrytitle, refmeta/manvolnum, refnamediv/refdescriptor,
;; refnamediv/refname
(let* ((refmeta (select-elements (children target)
(normalize "refmeta")))
(refnamediv (select-elements (children target)
(normalize "refnamediv")))
(rfetitle (select-elements (children refmeta)
(normalize "refentrytitle")))
(manvolnum (select-elements (children refmeta)
(normalize "manvolnum")))
(refdescrip (select-elements (children refnamediv)
(normalize "refdescriptor")))
(refname (select-elements (children refnamediv)
(normalize "refname")))
(title (if (node-list-empty? rfetitle)
(if (node-list-empty? refdescrip)
(node-list-first refname)
(node-list-first refdescrip))
(node-list-first rfetitle)))
(xsosofo (make sequence
(process-node-list (children title))
(if (and %refentry-xref-manvolnum%
(not (node-list-empty? manvolnum)))
(process-node-list manvolnum)
(empty-sosofo)))))
(make sequence
(if %refentry-xref-italic%
(make element gi: "I"
xsosofo)
xsosofo))))
(define (xref-refnamediv target)
(let* ((refname (select-elements (children target)
(normalize "refname")))
(title (node-list-first refname))
(xsosofo (make sequence
(process-node-list (children title)))))
(make sequence
(if %refentry-xref-italic%
(make element gi: "I"
xsosofo)
xsosofo))))
(define (xref-varlistentry target)
(let ((terms (select-elements (children target)
(normalize "term"))))
(with-mode xref-varlistentry-mode
(process-node-list (node-list-first terms)))))
(define (xref-glossentry target)
(let ((glossterms (select-elements (children target)
(normalize "glossterm"))))
(with-mode xref-glossentry-mode
(process-node-list (node-list-first glossterms)))))
(define (xref-author target)
(literal (author-string target)))
(define (xref-authorgroup target)
;; it's a quirk of author-list-string that it needs to point to
;; one of the authors in the authorgroup, not the authorgroup.
;; go figure.
(let loop ((author (select-elements (children target) (normalize "author"))))
(if (node-list-empty? author)
(empty-sosofo)
(make sequence
(literal (author-list-string (node-list-first author)))
(loop (node-list-rest author))))))
;(define (xref-substeps target)
; (let* ((steps (select-elements (children target) (normalize "step")))
; (firststep (node-list-first steps))
; (laststep (node-list-last steps))
; (firstlabel (auto-xref-direct firststep))
; (lastlabel (auto-xref-direct laststep "%n")))
; (make sequence
; firstlabel
; (literal "-")
; lastlabel)))
(define (xref-general target #!optional (xref-string #f))
;; This function is used by both XREF and OLINK (when no TARGETDOCENT
;; is specified). The only case where xref-string is supplied is
;; on OLINK.
(let ((label (attribute-string (normalize "xreflabel") target)))
(if xref-string
(auto-xref target xref-string)
(if label
(xreflabel-sosofo label)
(auto-xref target)))))
(define (xref-biblioentry target)
(let* ((abbrev (node-list-first
(node-list-filter-out-pis (children target))))
(label (attribute-string (normalize "xreflabel") target)))
(if biblio-xref-title
(let* ((citetitles (select-elements (descendants target)
(normalize "citetitle")))
(titles (select-elements (descendants target)
(normalize "title")))
(title (if (node-list-empty? citetitles)
(node-list-first titles)
(node-list-first citetitles))))
(with-mode xref-title-mode
(process-node-list title)))
(if biblio-number
(make sequence
(literal "[" (number->string (bibentry-number target)) "]"))
(if label
(make sequence
(literal "[" label "]"))
(if (equal? (gi abbrev) (normalize "abbrev"))
(make sequence
(process-node-list abbrev))
(make sequence
(literal "[" (id target) "]"))))))))
(mode xref-endterm-mode
(default
(make element gi: "I"
(process-children-trim))))
(define (xreflabel-sosofo xreflabel)
(make element gi: "I"
(literal xreflabel)))
;; Returns the title of the element as a sosofo, italicized for xref.
;;
(define (element-title-xref-sosofo nd)
(make element gi: "I"
(element-title-sosofo nd)))
(mode xref-title-mode
(element title
(make element gi: "I"
(process-children-trim)))
(element citetitle
(make element gi: "I"
(process-children-trim)))
(element refname
(process-children-trim))
(element refentrytitle
(process-children-trim)))
(mode xref-varlistentry-mode
(element term
($italic-seq$)))
(mode xref-glossentry-mode
(element glossterm
($italic-seq$)))
;; ======================================================================
(define (element-page-number-sosofo target)
(literal "???"))
;; ======================================================================
|
