d7482997 |
1 | /* |
2 | * Windows Help backend for Halibut |
3 | * |
4 | * TODO: |
5 | * - allow user to specify section contexts. |
6 | */ |
7 | |
8 | #include <stdio.h> |
9 | #include <stdlib.h> |
10 | #include <assert.h> |
11 | |
12 | #include "halibut.h" |
13 | #include "winhelp.h" |
14 | |
15 | struct bk_whlp_state { |
16 | WHLP h; |
17 | indexdata *idx; |
18 | keywordlist *keywords; |
19 | WHLP_TOPIC curr_topic; |
20 | FILE *cntfp; |
21 | int cnt_last_level, cnt_workaround; |
22 | }; |
23 | |
24 | /* |
25 | * Indexes of fonts in our standard font descriptor set. |
26 | */ |
27 | enum { |
28 | FONT_NORMAL, |
29 | FONT_EMPH, |
30 | FONT_CODE, |
4b3c5afb |
31 | FONT_ITAL_CODE, |
32 | FONT_BOLD_CODE, |
d7482997 |
33 | FONT_TITLE, |
34 | FONT_TITLE_EMPH, |
35 | FONT_TITLE_CODE, |
36 | FONT_RULE |
37 | }; |
38 | |
39 | static void whlp_rdaddwc(rdstringc *rs, word *text); |
4b3c5afb |
40 | static int whlp_convert(wchar_t *s, int maxlen, |
41 | char **result, int hard_spaces); |
d7482997 |
42 | static void whlp_mkparagraph(struct bk_whlp_state *state, |
43 | int font, word *text, int subsidiary); |
44 | static void whlp_navmenu(struct bk_whlp_state *state, paragraph *p); |
45 | static void whlp_contents_write(struct bk_whlp_state *state, |
46 | int level, char *text, WHLP_TOPIC topic); |
47 | |
48 | void whlp_backend(paragraph *sourceform, keywordlist *keywords, |
49 | indexdata *idx) { |
50 | WHLP h; |
51 | char *filename, *cntname; |
52 | paragraph *p, *lastsect; |
53 | struct bk_whlp_state state; |
54 | WHLP_TOPIC contents_topic; |
55 | int i; |
7136a6c7 |
56 | int nesting; |
d7482997 |
57 | indexentry *ie; |
8902e0ed |
58 | int done_contents_topic; |
d7482997 |
59 | |
60 | filename = "output.hlp"; /* FIXME: configurability */ |
61 | cntname = "output.cnt"; /* corresponding contents file */ |
62 | |
63 | state.cntfp = fopen(cntname, "wb"); |
64 | state.cnt_last_level = -1; state.cnt_workaround = 0; |
65 | |
66 | h = state.h = whlp_new(); |
67 | state.keywords = keywords; |
68 | state.idx = idx; |
69 | |
70 | whlp_start_macro(h, "CB(\"btn_about\",\"&About\",\"About()\")"); |
71 | whlp_start_macro(h, "CB(\"btn_up\",\"&Up\",\"Contents()\")"); |
72 | whlp_start_macro(h, "BrowseButtons()"); |
73 | |
74 | whlp_create_font(h, "Times New Roman", WHLP_FONTFAM_SERIF, 24, |
75 | 0, 0, 0, 0); |
76 | whlp_create_font(h, "Times New Roman", WHLP_FONTFAM_SERIF, 24, |
77 | WHLP_FONT_ITALIC, 0, 0, 0); |
78 | whlp_create_font(h, "Courier New", WHLP_FONTFAM_FIXED, 24, |
79 | 0, 0, 0, 0); |
4b3c5afb |
80 | whlp_create_font(h, "Courier New", WHLP_FONTFAM_FIXED, 24, |
81 | WHLP_FONT_ITALIC, 0, 0, 0); |
82 | whlp_create_font(h, "Courier New", WHLP_FONTFAM_FIXED, 24, |
83 | WHLP_FONT_BOLD, 0, 0, 0); |
d7482997 |
84 | whlp_create_font(h, "Arial", WHLP_FONTFAM_SERIF, 30, |
85 | WHLP_FONT_BOLD, 0, 0, 0); |
86 | whlp_create_font(h, "Arial", WHLP_FONTFAM_SERIF, 30, |
87 | WHLP_FONT_BOLD|WHLP_FONT_ITALIC, 0, 0, 0); |
88 | whlp_create_font(h, "Courier New", WHLP_FONTFAM_FIXED, 30, |
89 | WHLP_FONT_BOLD, 0, 0, 0); |
90 | whlp_create_font(h, "Courier New", WHLP_FONTFAM_SANS, 18, |
91 | WHLP_FONT_STRIKEOUT, 0, 0, 0); |
92 | |
93 | /* |
94 | * Loop over the source form finding out whether the user has |
95 | * specified particular help topic names for anything. |
96 | */ |
97 | for (p = sourceform; p; p = p->next) { |
98 | p->private_data = NULL; |
99 | if (p->type == para_Config && p->parent) { |
100 | if (!ustricmp(p->keyword, L"winhelp-topic")) { |
101 | char *topicname; |
4b3c5afb |
102 | whlp_convert(uadv(p->keyword), 0, &topicname, 0); |
d7482997 |
103 | /* Store the topic name in the private_data field of the |
104 | * containing section. */ |
105 | p->parent->private_data = topicname; |
106 | } |
107 | } |
108 | } |
109 | |
110 | /* |
111 | * Loop over the source form registering WHLP_TOPICs for |
112 | * everything. |
113 | */ |
114 | |
115 | contents_topic = whlp_register_topic(h, "Top", NULL); |
116 | whlp_primary_topic(h, contents_topic); |
117 | for (p = sourceform; p; p = p->next) { |
118 | if (p->type == para_Chapter || |
119 | p->type == para_Appendix || |
120 | p->type == para_UnnumberedChapter || |
121 | p->type == para_Heading || |
122 | p->type == para_Subsect) { |
123 | char *topicid = p->private_data; |
124 | char *errstr; |
125 | |
126 | p->private_data = whlp_register_topic(h, topicid, &errstr); |
127 | if (!p->private_data) { |
128 | p->private_data = whlp_register_topic(h, NULL, NULL); |
129 | error(err_winhelp_ctxclash, &p->fpos, topicid, errstr); |
130 | } |
131 | sfree(topicid); |
132 | } |
133 | } |
134 | |
135 | /* |
136 | * Loop over the index entries, preparing final text forms for |
137 | * each one. |
138 | */ |
139 | for (i = 0; (ie = index234(idx->entries, i)) != NULL; i++) { |
140 | rdstringc rs = {0, 0, NULL}; |
141 | whlp_rdaddwc(&rs, ie->text); |
142 | ie->backend_data = rs.text; |
143 | } |
144 | |
145 | whlp_prepare(h); |
146 | |
147 | /* ------------------------------------------------------------------ |
8902e0ed |
148 | * Begin the contents page. |
d7482997 |
149 | */ |
150 | |
151 | whlp_begin_topic(h, contents_topic, "Contents", "DB(\"btn_up\")", NULL); |
152 | |
153 | /* |
154 | * The manual title goes in the non-scroll region, and also |
155 | * goes into the system title slot. |
156 | */ |
157 | { |
158 | rdstringc rs = {0, 0, NULL}; |
159 | for (p = sourceform; p; p = p->next) { |
160 | if (p->type == para_Title) { |
161 | whlp_begin_para(h, WHLP_PARA_NONSCROLL); |
162 | whlp_mkparagraph(&state, FONT_TITLE, p->words, FALSE); |
163 | whlp_rdaddwc(&rs, p->words); |
164 | whlp_end_para(h); |
165 | } |
166 | } |
167 | if (rs.text) { |
168 | whlp_title(h, rs.text); |
169 | fprintf(state.cntfp, ":Title %s\r\n", rs.text); |
170 | sfree(rs.text); |
171 | } |
172 | whlp_contents_write(&state, 1, "Title page", contents_topic); |
173 | /* FIXME: configurability in that string */ |
174 | } |
175 | |
d7482997 |
176 | lastsect = NULL; |
177 | |
178 | /* ------------------------------------------------------------------ |
179 | * Now we've done the contents page, we're ready to go through |
180 | * and do the main manual text. Ooh. |
181 | */ |
7136a6c7 |
182 | nesting = 0; |
d7482997 |
183 | for (p = sourceform; p; p = p->next) switch (p->type) { |
184 | /* |
185 | * Things we ignore because we've already processed them or |
186 | * aren't going to touch them in this pass. |
187 | */ |
188 | case para_IM: |
189 | case para_BR: |
190 | case para_Biblio: /* only touch BiblioCited */ |
191 | case para_VersionID: |
192 | case para_Copyright: |
d7482997 |
193 | case para_NoCite: |
194 | case para_Title: |
195 | break; |
196 | |
7136a6c7 |
197 | case para_LcontPush: |
2614b01d |
198 | case para_QuotePush: |
7136a6c7 |
199 | nesting++; |
200 | break; |
201 | case para_LcontPop: |
2614b01d |
202 | case para_QuotePop: |
7136a6c7 |
203 | assert(nesting > 0); |
204 | nesting--; |
205 | break; |
206 | |
d7482997 |
207 | /* |
208 | * Chapter and section titles: start a new Help topic. |
209 | */ |
210 | case para_Chapter: |
211 | case para_Appendix: |
212 | case para_UnnumberedChapter: |
213 | case para_Heading: |
214 | case para_Subsect: |
8902e0ed |
215 | |
216 | if (!done_contents_topic) { |
217 | paragraph *p; |
218 | |
219 | /* |
220 | * If this is the first section title we've seen, then |
221 | * we're currently still in the contents topic. We |
222 | * should therefore finish up the contents page by |
223 | * writing the copyright notice and a nav menu. |
224 | */ |
225 | |
226 | /* |
227 | * The copyright goes to two places, again: into the |
228 | * contents page and also into the system section. |
229 | */ |
230 | { |
231 | rdstringc rs = {0, 0, NULL}; |
232 | for (p = sourceform; p; p = p->next) { |
233 | if (p->type == para_Copyright) { |
234 | whlp_para_attr(h, WHLP_PARA_SPACEBELOW, 12); |
235 | whlp_begin_para(h, WHLP_PARA_SCROLL); |
236 | whlp_mkparagraph(&state, FONT_NORMAL, p->words, FALSE); |
237 | whlp_end_para(h); |
238 | whlp_rdaddwc(&rs, p->words); |
239 | } |
240 | } |
241 | if (rs.text) { |
242 | whlp_copyright(h, rs.text); |
243 | sfree(rs.text); |
244 | } |
245 | } |
246 | |
247 | /* |
248 | * Now do the primary navigation menu. |
249 | */ |
250 | for (p = sourceform; p; p = p->next) { |
251 | if (p->type == para_Chapter || |
252 | p->type == para_Appendix || |
253 | p->type == para_UnnumberedChapter) |
254 | whlp_navmenu(&state, p); |
255 | } |
256 | |
257 | state.curr_topic = contents_topic; |
258 | |
259 | done_contents_topic = TRUE; |
260 | } |
261 | |
d7482997 |
262 | if (lastsect && lastsect->child) { |
263 | paragraph *q; |
264 | /* |
265 | * Do a navigation menu for the previous section we |
266 | * were in. |
267 | */ |
268 | for (q = lastsect->child; q; q = q->sibling) |
269 | whlp_navmenu(&state, q); |
270 | } |
271 | { |
272 | rdstringc rs = {0, 0, NULL}; |
273 | WHLP_TOPIC new_topic, parent_topic; |
274 | char *macro, *topicid; |
275 | |
276 | new_topic = p->private_data; |
277 | whlp_browse_link(h, state.curr_topic, new_topic); |
278 | state.curr_topic = new_topic; |
279 | |
280 | if (p->kwtext) { |
281 | whlp_rdaddwc(&rs, p->kwtext); |
282 | rdaddsc(&rs, ": "); /* FIXME: configurability */ |
283 | } |
284 | whlp_rdaddwc(&rs, p->words); |
285 | if (p->parent == NULL) |
286 | parent_topic = contents_topic; |
287 | else |
288 | parent_topic = (WHLP_TOPIC)p->parent->private_data; |
289 | topicid = whlp_topic_id(parent_topic); |
290 | macro = smalloc(100+strlen(topicid)); |
291 | sprintf(macro, |
292 | "CBB(\"btn_up\",\"JI(`',`%s')\");EB(\"btn_up\")", |
293 | topicid); |
294 | whlp_begin_topic(h, new_topic, |
295 | rs.text ? rs.text : "", |
296 | macro, NULL); |
297 | sfree(macro); |
298 | |
299 | { |
300 | /* |
301 | * Output the .cnt entry. |
302 | * |
303 | * WinHelp has a bug involving having an internal |
304 | * node followed by a leaf at the same level: the |
305 | * leaf is output at the wrong level. We can mostly |
306 | * work around this by modifying the leaf level |
307 | * itself (see whlp_contents_write), but this |
308 | * doesn't work for top-level sections since we |
309 | * can't turn a level-1 leaf into a level-0 one. So |
310 | * for top-level leaf sections (Bibliography |
311 | * springs to mind), we output an internal node |
312 | * containing only the leaf for that section. |
313 | */ |
314 | int i; |
315 | paragraph *q; |
316 | |
317 | /* Count up the level. */ |
318 | i = 1; |
319 | for (q = p; q->parent; q = q->parent) i++; |
320 | |
321 | if (p->child || !p->parent) { |
322 | /* |
323 | * If p has children then it needs to be a |
324 | * folder; if it has no parent then it needs to |
325 | * be a folder to work around the bug. |
326 | */ |
327 | whlp_contents_write(&state, i, rs.text, NULL); |
328 | i++; |
329 | } |
330 | whlp_contents_write(&state, i, rs.text, new_topic); |
331 | } |
332 | |
333 | sfree(rs.text); |
334 | |
335 | whlp_begin_para(h, WHLP_PARA_NONSCROLL); |
336 | if (p->kwtext) { |
337 | whlp_mkparagraph(&state, FONT_TITLE, p->kwtext, FALSE); |
338 | whlp_set_font(h, FONT_TITLE); |
339 | whlp_text(h, ": "); /* FIXME: configurability */ |
340 | } |
341 | whlp_mkparagraph(&state, FONT_TITLE, p->words, FALSE); |
342 | whlp_end_para(h); |
343 | |
344 | lastsect = p; |
345 | } |
346 | break; |
347 | |
348 | case para_Rule: |
349 | whlp_para_attr(h, WHLP_PARA_SPACEBELOW, 12); |
350 | whlp_para_attr(h, WHLP_PARA_ALIGNMENT, WHLP_ALIGN_CENTRE); |
351 | whlp_begin_para(h, WHLP_PARA_SCROLL); |
352 | whlp_set_font(h, FONT_RULE); |
353 | #define TEN "\xA0\xA0\xA0\xA0\xA0\xA0\xA0\xA0\xA0\xA0" |
354 | #define TWENTY TEN TEN |
355 | #define FORTY TWENTY TWENTY |
356 | #define EIGHTY FORTY FORTY |
357 | whlp_text(h, EIGHTY); |
358 | #undef TEN |
359 | #undef TWENTY |
360 | #undef FORTY |
361 | #undef EIGHTY |
362 | whlp_end_para(h); |
363 | break; |
364 | |
365 | case para_Normal: |
7136a6c7 |
366 | case para_DescribedThing: |
367 | case para_Description: |
d7482997 |
368 | case para_BiblioCited: |
369 | case para_Bullet: |
370 | case para_NumberedList: |
371 | whlp_para_attr(h, WHLP_PARA_SPACEBELOW, 12); |
372 | if (p->type == para_Bullet || p->type == para_NumberedList) { |
7136a6c7 |
373 | whlp_para_attr(h, WHLP_PARA_LEFTINDENT, 72*nesting + 72); |
d7482997 |
374 | whlp_para_attr(h, WHLP_PARA_FIRSTLINEINDENT, -36); |
375 | whlp_set_tabstop(h, 72, WHLP_ALIGN_LEFT); |
376 | whlp_begin_para(h, WHLP_PARA_SCROLL); |
377 | whlp_set_font(h, FONT_NORMAL); |
378 | if (p->type == para_Bullet) { |
379 | whlp_text(h, "\x95"); |
380 | } else { |
381 | whlp_mkparagraph(&state, FONT_NORMAL, p->kwtext, FALSE); |
382 | whlp_text(h, "."); |
383 | } |
384 | whlp_tab(h); |
385 | } else { |
7136a6c7 |
386 | whlp_para_attr(h, WHLP_PARA_LEFTINDENT, |
387 | 72*nesting + (p->type==para_Description ? 72 : 0)); |
d7482997 |
388 | whlp_begin_para(h, WHLP_PARA_SCROLL); |
389 | } |
390 | |
391 | if (p->type == para_BiblioCited) { |
392 | whlp_mkparagraph(&state, FONT_NORMAL, p->kwtext, FALSE); |
393 | whlp_text(h, " "); |
394 | } |
395 | |
396 | whlp_mkparagraph(&state, FONT_NORMAL, p->words, FALSE); |
397 | whlp_end_para(h); |
398 | break; |
399 | |
400 | case para_Code: |
401 | /* |
402 | * In a code paragraph, each individual word is a line. For |
403 | * Help files, we will have to output this as a set of |
404 | * paragraphs, all but the last of which don't set |
405 | * SPACEBELOW. |
406 | */ |
407 | { |
408 | word *w; |
4b3c5afb |
409 | wchar_t *t, *e; |
d7482997 |
410 | char *c; |
4b3c5afb |
411 | |
412 | for (w = p->words; w; w = w->next) if (w->type == word_WeakCode) { |
413 | t = w->text; |
414 | if (w->next && w->next->type == word_Emph) { |
415 | w = w->next; |
416 | e = w->text; |
417 | } else |
418 | e = NULL; |
419 | |
d7482997 |
420 | if (!w->next) |
421 | whlp_para_attr(h, WHLP_PARA_SPACEBELOW, 12); |
4b3c5afb |
422 | |
7136a6c7 |
423 | whlp_para_attr(h, WHLP_PARA_LEFTINDENT, 72*nesting); |
d7482997 |
424 | whlp_begin_para(h, WHLP_PARA_SCROLL); |
4b3c5afb |
425 | while (e && *e && *t) { |
426 | int n; |
427 | int ec = *e; |
428 | |
429 | for (n = 0; t[n] && e[n] && e[n] == ec; n++); |
430 | if (ec == 'i') |
431 | whlp_set_font(h, FONT_ITAL_CODE); |
432 | else if (ec == 'b') |
433 | whlp_set_font(h, FONT_BOLD_CODE); |
434 | else |
435 | whlp_set_font(h, FONT_CODE); |
436 | whlp_convert(t, n, &c, FALSE); |
437 | whlp_text(h, c); |
438 | sfree(c); |
439 | t += n; |
440 | e += n; |
441 | } |
d7482997 |
442 | whlp_set_font(h, FONT_CODE); |
4b3c5afb |
443 | whlp_convert(t, 0, &c, FALSE); |
d7482997 |
444 | whlp_text(h, c); |
445 | sfree(c); |
446 | whlp_end_para(h); |
447 | } |
448 | } |
449 | break; |
450 | } |
451 | |
452 | fclose(state.cntfp); |
453 | whlp_close(h, filename); |
454 | |
455 | /* |
456 | * Loop over the index entries, cleaning up our final text |
457 | * forms. |
458 | */ |
459 | for (i = 0; (ie = index234(idx->entries, i)) != NULL; i++) { |
460 | sfree(ie->backend_data); |
461 | } |
462 | } |
463 | |
464 | static void whlp_contents_write(struct bk_whlp_state *state, |
465 | int level, char *text, WHLP_TOPIC topic) { |
466 | /* |
467 | * Horrifying bug in WinHelp. When dropping a section level or |
468 | * more without using a folder-type entry, WinHelp accidentally |
469 | * adds one to the section level. So we correct for that here. |
470 | */ |
471 | if (state->cnt_last_level > level && topic) |
472 | state->cnt_workaround = -1; |
473 | else if (!topic) |
474 | state->cnt_workaround = 0; |
475 | state->cnt_last_level = level; |
476 | |
477 | fprintf(state->cntfp, "%d ", level + state->cnt_workaround); |
478 | while (*text) { |
479 | if (*text == '=') |
480 | fputc('\\', state->cntfp); |
481 | fputc(*text, state->cntfp); |
482 | text++; |
483 | } |
484 | if (topic) |
485 | fprintf(state->cntfp, "=%s", whlp_topic_id(topic)); |
486 | fputc('\n', state->cntfp); |
487 | } |
488 | |
489 | static void whlp_navmenu(struct bk_whlp_state *state, paragraph *p) { |
490 | whlp_begin_para(state->h, WHLP_PARA_NONSCROLL); |
491 | whlp_start_hyperlink(state->h, (WHLP_TOPIC)p->private_data); |
492 | if (p->kwtext) { |
493 | whlp_mkparagraph(state, FONT_NORMAL, p->kwtext, TRUE); |
494 | whlp_set_font(state->h, FONT_NORMAL); |
495 | whlp_text(state->h, ": "); /* FIXME: configurability */ |
496 | } |
497 | whlp_mkparagraph(state, FONT_NORMAL, p->words, TRUE); |
498 | whlp_end_hyperlink(state->h); |
499 | whlp_end_para(state->h); |
500 | |
501 | } |
502 | |
503 | static void whlp_mkparagraph(struct bk_whlp_state *state, |
504 | int font, word *text, int subsidiary) { |
505 | keyword *kwl; |
506 | int deffont = font; |
507 | int currfont = -1; |
508 | int newfont; |
509 | char *c; |
510 | paragraph *xref_target = NULL; |
511 | |
512 | for (; text; text = text->next) switch (text->type) { |
513 | case word_HyperLink: |
514 | case word_HyperEnd: |
515 | break; |
516 | |
517 | case word_IndexRef: |
518 | if (subsidiary) break; /* disabled in subsidiary bits */ |
519 | { |
520 | indextag *tag = index_findtag(state->idx, text->text); |
521 | int i; |
522 | if (!tag) |
523 | break; |
524 | for (i = 0; i < tag->nrefs; i++) |
525 | whlp_index_term(state->h, tag->refs[i]->backend_data, |
526 | state->curr_topic); |
527 | } |
528 | break; |
529 | |
530 | case word_UpperXref: |
531 | case word_LowerXref: |
532 | if (subsidiary) break; /* disabled in subsidiary bits */ |
533 | kwl = kw_lookup(state->keywords, text->text); |
7cf305b7 |
534 | assert(xref_target == NULL); |
535 | if (kwl) { |
536 | if (kwl->para->type == para_NumberedList) { |
537 | break; /* don't xref to numbered list items */ |
538 | } else if (kwl->para->type == para_BiblioCited) { |
539 | /* |
540 | * An xref to a bibliography item jumps to the section |
541 | * containing it. |
542 | */ |
543 | if (kwl->para->parent) |
544 | xref_target = kwl->para->parent; |
545 | else |
546 | break; |
547 | } else { |
548 | xref_target = kwl->para; |
549 | } |
550 | whlp_start_hyperlink(state->h, |
551 | (WHLP_TOPIC)xref_target->private_data); |
552 | } |
d7482997 |
553 | break; |
554 | |
555 | case word_XrefEnd: |
556 | if (subsidiary) break; /* disabled in subsidiary bits */ |
557 | if (xref_target) |
558 | whlp_end_hyperlink(state->h); |
559 | xref_target = NULL; |
560 | break; |
561 | |
562 | case word_Normal: |
563 | case word_Emph: |
564 | case word_Code: |
565 | case word_WeakCode: |
566 | case word_WhiteSpace: |
567 | case word_EmphSpace: |
568 | case word_CodeSpace: |
569 | case word_WkCodeSpace: |
570 | case word_Quote: |
571 | case word_EmphQuote: |
572 | case word_CodeQuote: |
573 | case word_WkCodeQuote: |
574 | if (towordstyle(text->type) == word_Emph) |
575 | newfont = deffont + FONT_EMPH; |
576 | else if (towordstyle(text->type) == word_Code || |
577 | towordstyle(text->type) == word_WeakCode) |
578 | newfont = deffont + FONT_CODE; |
579 | else |
580 | newfont = deffont; |
581 | if (newfont != currfont) { |
582 | currfont = newfont; |
583 | whlp_set_font(state->h, newfont); |
584 | } |
585 | if (removeattr(text->type) == word_Normal) { |
4b3c5afb |
586 | if (whlp_convert(text->text, 0, &c, TRUE)) |
d7482997 |
587 | whlp_text(state->h, c); |
588 | else |
589 | whlp_mkparagraph(state, deffont, text->alt, FALSE); |
590 | sfree(c); |
591 | } else if (removeattr(text->type) == word_WhiteSpace) { |
592 | whlp_text(state->h, " "); |
593 | } else if (removeattr(text->type) == word_Quote) { |
594 | whlp_text(state->h, |
595 | quoteaux(text->aux) == quote_Open ? "\x91" : "\x92"); |
596 | /* FIXME: configurability */ |
597 | } |
598 | break; |
599 | } |
600 | } |
601 | |
602 | static void whlp_rdaddwc(rdstringc *rs, word *text) { |
603 | char *c; |
604 | |
605 | for (; text; text = text->next) switch (text->type) { |
606 | case word_HyperLink: |
607 | case word_HyperEnd: |
608 | case word_UpperXref: |
609 | case word_LowerXref: |
610 | case word_XrefEnd: |
611 | case word_IndexRef: |
612 | break; |
613 | |
614 | case word_Normal: |
615 | case word_Emph: |
616 | case word_Code: |
617 | case word_WeakCode: |
618 | case word_WhiteSpace: |
619 | case word_EmphSpace: |
620 | case word_CodeSpace: |
621 | case word_WkCodeSpace: |
622 | case word_Quote: |
623 | case word_EmphQuote: |
624 | case word_CodeQuote: |
625 | case word_WkCodeQuote: |
626 | assert(text->type != word_CodeQuote && |
627 | text->type != word_WkCodeQuote); |
628 | if (removeattr(text->type) == word_Normal) { |
4b3c5afb |
629 | if (whlp_convert(text->text, 0, &c, FALSE)) |
d7482997 |
630 | rdaddsc(rs, c); |
631 | else |
632 | whlp_rdaddwc(rs, text->alt); |
633 | sfree(c); |
634 | } else if (removeattr(text->type) == word_WhiteSpace) { |
635 | rdaddc(rs, ' '); |
636 | } else if (removeattr(text->type) == word_Quote) { |
637 | rdaddc(rs, quoteaux(text->aux) == quote_Open ? '\x91' : '\x92'); |
638 | /* FIXME: configurability */ |
639 | } |
640 | break; |
641 | } |
642 | } |
643 | |
644 | /* |
645 | * Convert a wide string into a string of chars. If `result' is |
646 | * non-NULL, mallocs the resulting string and stores a pointer to |
647 | * it in `*result'. If `result' is NULL, merely checks whether all |
648 | * characters in the string are feasible for the output character |
649 | * set. |
650 | * |
651 | * Return is nonzero if all characters are OK. If not all |
652 | * characters are OK but `result' is non-NULL, a result _will_ |
653 | * still be generated! |
654 | */ |
4b3c5afb |
655 | static int whlp_convert(wchar_t *s, int maxlen, |
656 | char **result, int hard_spaces) { |
d7482997 |
657 | /* |
658 | * FIXME. Currently this is ISO8859-1 only. |
659 | */ |
660 | int doing = (result != 0); |
661 | int ok = TRUE; |
662 | char *p = NULL; |
663 | int plen = 0, psize = 0; |
664 | |
4b3c5afb |
665 | if (maxlen <= 0) |
666 | maxlen = -1; |
667 | |
668 | for (; *s && maxlen != 0; s++, maxlen--) { |
d7482997 |
669 | wchar_t c = *s; |
670 | char outc; |
671 | |
672 | if ((c >= 32 && c <= 126) || |
673 | (c >= 160 && c <= 255)) { |
674 | /* Char is OK. */ |
675 | if (c == 32 && hard_spaces) |
676 | outc = '\240'; |
677 | else |
678 | outc = (char)c; |
679 | } else { |
680 | /* Char is not OK. */ |
681 | ok = FALSE; |
682 | outc = 0xBF; /* approximate the good old DEC `uh?' */ |
683 | } |
684 | if (doing) { |
685 | if (plen >= psize) { |
686 | psize = plen + 256; |
687 | p = resize(p, psize); |
688 | } |
689 | p[plen++] = outc; |
690 | } |
691 | } |
692 | if (doing) { |
693 | p = resize(p, plen+1); |
694 | p[plen] = '\0'; |
695 | *result = p; |
696 | } |
697 | return ok; |
698 | } |