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