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