d7482997 |
1 | /* |
2 | * text backend for Halibut |
3 | */ |
4 | |
5 | #include <stdio.h> |
6 | #include <stdlib.h> |
7 | #include <assert.h> |
8 | #include "halibut.h" |
9 | |
10 | typedef enum { LEFT, LEFTPLUS, CENTRE } alignment; |
11 | typedef struct { |
12 | alignment align; |
13 | int just_numbers; |
db662ca1 |
14 | wchar_t *underline; |
63223c78 |
15 | wchar_t *number_suffix; |
d7482997 |
16 | } alignstruct; |
17 | |
18 | typedef struct { |
19 | int indent, indent_code; |
20 | int listindentbefore, listindentafter; |
21 | int width; |
22 | alignstruct atitle, achapter, *asect; |
23 | int nasect; |
24 | int include_version_id; |
25 | int indent_preambles; |
2ac8ceac |
26 | int charset; |
d7482997 |
27 | word bullet; |
db662ca1 |
28 | wchar_t *lquote, *rquote, *rule; |
50d6b4bd |
29 | char *filename; |
db662ca1 |
30 | wchar_t *listsuffix, *startemph, *endemph; |
d7482997 |
31 | } textconfig; |
32 | |
2ac8ceac |
33 | typedef struct { |
34 | FILE *fp; |
35 | int charset; |
36 | charset_state state; |
37 | } textfile; |
38 | |
39 | static void text_heading(textfile *, word *, word *, word *, alignstruct, |
db662ca1 |
40 | int, int, textconfig *); |
41 | static void text_rule(textfile *, int, int, textconfig *); |
42 | static void text_para(textfile *, word *, wchar_t *, word *, int, int, int, |
43 | textconfig *); |
2ac8ceac |
44 | static void text_codepara(textfile *, word *, int, int); |
db662ca1 |
45 | static void text_versionid(textfile *, word *, textconfig *); |
d7482997 |
46 | |
2ac8ceac |
47 | static void text_output(textfile *, const wchar_t *); |
48 | static void text_output_many(textfile *, int, wchar_t); |
d7482997 |
49 | |
50 | static alignment utoalign(wchar_t *p) { |
51 | if (!ustricmp(p, L"centre") || !ustricmp(p, L"center")) |
52 | return CENTRE; |
53 | if (!ustricmp(p, L"leftplus")) |
54 | return LEFTPLUS; |
55 | return LEFT; |
56 | } |
57 | |
58 | static textconfig text_configure(paragraph *source) { |
59 | textconfig ret; |
db662ca1 |
60 | paragraph *p; |
61 | int n; |
d7482997 |
62 | |
63 | /* |
64 | * Non-negotiables. |
65 | */ |
66 | ret.bullet.next = NULL; |
67 | ret.bullet.alt = NULL; |
68 | ret.bullet.type = word_Normal; |
69 | ret.atitle.just_numbers = FALSE; /* ignored */ |
70 | |
71 | /* |
72 | * Defaults. |
73 | */ |
74 | ret.indent = 7; |
75 | ret.indent_code = 2; |
76 | ret.listindentbefore = 1; |
77 | ret.listindentafter = 3; |
78 | ret.width = 68; |
79 | ret.atitle.align = CENTRE; |
db662ca1 |
80 | ret.atitle.underline = L"\x2550\0=\0\0"; |
d7482997 |
81 | ret.achapter.align = LEFT; |
82 | ret.achapter.just_numbers = FALSE; |
e5e6bf9d |
83 | ret.achapter.number_suffix = L": "; |
db662ca1 |
84 | ret.achapter.underline = L"\x203E\0-\0\0"; |
d7482997 |
85 | ret.nasect = 1; |
86 | ret.asect = mknewa(alignstruct, ret.nasect); |
87 | ret.asect[0].align = LEFTPLUS; |
88 | ret.asect[0].just_numbers = TRUE; |
e5e6bf9d |
89 | ret.asect[0].number_suffix = L" "; |
db662ca1 |
90 | ret.asect[0].underline = L"\0"; |
d7482997 |
91 | ret.include_version_id = TRUE; |
92 | ret.indent_preambles = FALSE; |
db662ca1 |
93 | ret.bullet.text = L"\x2022\0-\0\0"; |
94 | ret.rule = L"\x2500\0-\0\0"; |
50d6b4bd |
95 | ret.filename = dupstr("output.txt"); |
db662ca1 |
96 | ret.startemph = ret.endemph = L"_"; |
97 | ret.listsuffix = L"."; |
2ac8ceac |
98 | ret.charset = CS_ASCII; |
db662ca1 |
99 | /* |
100 | * Default quote characters are Unicode matched single quotes, |
101 | * falling back to the TeXlike `'. |
102 | */ |
103 | ret.lquote = L"\x2018\0\x2019\0`\0'\0\0"; |
104 | ret.rquote = uadv(ret.lquote); |
d7482997 |
105 | |
db662ca1 |
106 | /* |
107 | * Two-pass configuration so that we can pick up global config |
108 | * (e.g. `quotes') before having it overridden by specific |
109 | * config (`text-quotes'), irrespective of the order in which |
110 | * they occur. |
111 | */ |
112 | for (p = source; p; p = p->next) { |
113 | if (p->type == para_Config) { |
114 | if (!ustricmp(p->keyword, L"quotes")) { |
115 | if (*uadv(p->keyword) && *uadv(uadv(p->keyword))) { |
116 | ret.lquote = uadv(p->keyword); |
117 | ret.rquote = uadv(ret.lquote); |
118 | } |
119 | } |
120 | } |
121 | } |
122 | |
123 | for (p = source; p; p = p->next) { |
124 | if (p->type == para_Config) { |
125 | if (!ustricmp(p->keyword, L"text-indent")) { |
126 | ret.indent = utoi(uadv(p->keyword)); |
127 | } else if (!ustricmp(p->keyword, L"text-charset")) { |
128 | char *csname = utoa_dup(uadv(p->keyword), CS_ASCII); |
2ac8ceac |
129 | ret.charset = charset_from_localenc(csname); |
130 | sfree(csname); |
db662ca1 |
131 | } else if (!ustricmp(p->keyword, L"text-filename")) { |
50d6b4bd |
132 | sfree(ret.filename); |
db662ca1 |
133 | ret.filename = dupstr(adv(p->origkeyword)); |
134 | } else if (!ustricmp(p->keyword, L"text-indent-code")) { |
135 | ret.indent_code = utoi(uadv(p->keyword)); |
136 | } else if (!ustricmp(p->keyword, L"text-width")) { |
137 | ret.width = utoi(uadv(p->keyword)); |
138 | } else if (!ustricmp(p->keyword, L"text-list-indent")) { |
139 | ret.listindentbefore = utoi(uadv(p->keyword)); |
140 | } else if (!ustricmp(p->keyword, L"text-listitem-indent")) { |
141 | ret.listindentafter = utoi(uadv(p->keyword)); |
142 | } else if (!ustricmp(p->keyword, L"text-chapter-align")) { |
143 | ret.achapter.align = utoalign(uadv(p->keyword)); |
144 | } else if (!ustricmp(p->keyword, L"text-chapter-underline")) { |
145 | ret.achapter.underline = uadv(p->keyword); |
146 | } else if (!ustricmp(p->keyword, L"text-chapter-numeric")) { |
147 | ret.achapter.just_numbers = utob(uadv(p->keyword)); |
148 | } else if (!ustricmp(p->keyword, L"text-chapter-suffix")) { |
149 | ret.achapter.number_suffix = uadv(p->keyword); |
150 | } else if (!ustricmp(p->keyword, L"text-section-align")) { |
151 | wchar_t *q = uadv(p->keyword); |
d7482997 |
152 | int n = 0; |
db662ca1 |
153 | if (uisdigit(*q)) { |
154 | n = utoi(q); |
155 | q = uadv(q); |
d7482997 |
156 | } |
157 | if (n >= ret.nasect) { |
158 | int i; |
159 | ret.asect = resize(ret.asect, n+1); |
160 | for (i = ret.nasect; i <= n; i++) |
161 | ret.asect[i] = ret.asect[ret.nasect-1]; |
162 | ret.nasect = n+1; |
163 | } |
db662ca1 |
164 | ret.asect[n].align = utoalign(q); |
165 | } else if (!ustricmp(p->keyword, L"text-section-underline")) { |
166 | wchar_t *q = uadv(p->keyword); |
d7482997 |
167 | int n = 0; |
db662ca1 |
168 | if (uisdigit(*q)) { |
169 | n = utoi(q); |
170 | q = uadv(q); |
d7482997 |
171 | } |
172 | if (n >= ret.nasect) { |
173 | int i; |
174 | ret.asect = resize(ret.asect, n+1); |
175 | for (i = ret.nasect; i <= n; i++) |
176 | ret.asect[i] = ret.asect[ret.nasect-1]; |
177 | ret.nasect = n+1; |
178 | } |
db662ca1 |
179 | ret.asect[n].underline = q; |
180 | } else if (!ustricmp(p->keyword, L"text-section-numeric")) { |
181 | wchar_t *q = uadv(p->keyword); |
d7482997 |
182 | int n = 0; |
db662ca1 |
183 | if (uisdigit(*q)) { |
184 | n = utoi(q); |
185 | q = uadv(q); |
d7482997 |
186 | } |
187 | if (n >= ret.nasect) { |
188 | int i; |
189 | ret.asect = resize(ret.asect, n+1); |
190 | for (i = ret.nasect; i <= n; i++) |
191 | ret.asect[i] = ret.asect[ret.nasect-1]; |
192 | ret.nasect = n+1; |
193 | } |
db662ca1 |
194 | ret.asect[n].just_numbers = utob(q); |
195 | } else if (!ustricmp(p->keyword, L"text-section-suffix")) { |
196 | wchar_t *q = uadv(p->keyword); |
63223c78 |
197 | int n = 0; |
db662ca1 |
198 | if (uisdigit(*q)) { |
199 | n = utoi(q); |
200 | q = uadv(q); |
63223c78 |
201 | } |
202 | if (n >= ret.nasect) { |
203 | int i; |
204 | ret.asect = resize(ret.asect, n+1); |
e5e6bf9d |
205 | for (i = ret.nasect; i <= n; i++) { |
63223c78 |
206 | ret.asect[i] = ret.asect[ret.nasect-1]; |
e5e6bf9d |
207 | } |
63223c78 |
208 | ret.nasect = n+1; |
209 | } |
db662ca1 |
210 | ret.asect[n].number_suffix = q; |
211 | } else if (!ustricmp(p->keyword, L"text-title-align")) { |
212 | ret.atitle.align = utoalign(uadv(p->keyword)); |
213 | } else if (!ustricmp(p->keyword, L"text-title-underline")) { |
214 | ret.atitle.underline = uadv(p->keyword); |
215 | } else if (!ustricmp(p->keyword, L"text-versionid")) { |
216 | ret.include_version_id = utob(uadv(p->keyword)); |
217 | } else if (!ustricmp(p->keyword, L"text-indent-preamble")) { |
218 | ret.indent_preambles = utob(uadv(p->keyword)); |
219 | } else if (!ustricmp(p->keyword, L"text-bullet")) { |
220 | ret.bullet.text = uadv(p->keyword); |
221 | } else if (!ustricmp(p->keyword, L"text-rule")) { |
222 | ret.rule = uadv(p->keyword); |
223 | } else if (!ustricmp(p->keyword, L"text-list-suffix")) { |
224 | ret.listsuffix = uadv(p->keyword); |
225 | } else if (!ustricmp(p->keyword, L"text-emphasis")) { |
226 | if (*uadv(p->keyword) && *uadv(uadv(p->keyword))) { |
227 | ret.startemph = uadv(p->keyword); |
228 | ret.endemph = uadv(ret.startemph); |
229 | } |
230 | } else if (!ustricmp(p->keyword, L"text-quotes")) { |
231 | if (*uadv(p->keyword) && *uadv(uadv(p->keyword))) { |
232 | ret.lquote = uadv(p->keyword); |
233 | ret.rquote = uadv(ret.lquote); |
234 | } |
d7482997 |
235 | } |
236 | } |
237 | } |
238 | |
db662ca1 |
239 | /* |
240 | * Now process fallbacks on quote characters, underlines, the |
241 | * rule character, the emphasis characters, and bullets. |
242 | */ |
243 | while (*uadv(ret.rquote) && *uadv(uadv(ret.rquote)) && |
244 | (!cvt_ok(ret.charset, ret.lquote) || |
245 | !cvt_ok(ret.charset, ret.rquote))) { |
246 | ret.lquote = uadv(ret.rquote); |
247 | ret.rquote = uadv(ret.lquote); |
248 | } |
249 | |
250 | while (*uadv(ret.endemph) && *uadv(uadv(ret.endemph)) && |
251 | (!cvt_ok(ret.charset, ret.startemph) || |
252 | !cvt_ok(ret.charset, ret.endemph))) { |
253 | ret.startemph = uadv(ret.endemph); |
254 | ret.endemph = uadv(ret.startemph); |
255 | } |
256 | |
257 | while (*ret.atitle.underline && *uadv(ret.atitle.underline) && |
258 | !cvt_ok(ret.charset, ret.atitle.underline)) |
259 | ret.atitle.underline = uadv(ret.atitle.underline); |
260 | |
261 | while (*ret.achapter.underline && *uadv(ret.achapter.underline) && |
262 | !cvt_ok(ret.charset, ret.achapter.underline)) |
263 | ret.achapter.underline = uadv(ret.achapter.underline); |
264 | |
265 | for (n = 0; n < ret.nasect; n++) { |
266 | while (*ret.asect[n].underline && *uadv(ret.asect[n].underline) && |
267 | !cvt_ok(ret.charset, ret.asect[n].underline)) |
268 | ret.asect[n].underline = uadv(ret.asect[n].underline); |
269 | } |
270 | |
271 | while (*ret.bullet.text && *uadv(ret.bullet.text) && |
272 | !cvt_ok(ret.charset, ret.bullet.text)) |
273 | ret.bullet.text = uadv(ret.bullet.text); |
274 | |
275 | while (*ret.rule && *uadv(ret.rule) && |
276 | !cvt_ok(ret.charset, ret.rule)) |
277 | ret.rule = uadv(ret.rule); |
278 | |
d7482997 |
279 | return ret; |
280 | } |
281 | |
ba9c1487 |
282 | paragraph *text_config_filename(char *filename) |
283 | { |
e4ea58f8 |
284 | return cmdline_cfg_simple("text-filename", filename, NULL); |
ba9c1487 |
285 | } |
286 | |
d7482997 |
287 | void text_backend(paragraph *sourceform, keywordlist *keywords, |
43341922 |
288 | indexdata *idx, void *unused) { |
d7482997 |
289 | paragraph *p; |
290 | textconfig conf; |
291 | word *prefix, *body, *wp; |
292 | word spaceword; |
2ac8ceac |
293 | textfile tf; |
294 | wchar_t *prefixextra; |
7136a6c7 |
295 | int nesting, nestindent; |
d7482997 |
296 | int indentb, indenta; |
297 | |
43341922 |
298 | IGNORE(unused); |
d7482997 |
299 | IGNORE(keywords); /* we don't happen to need this */ |
300 | IGNORE(idx); /* or this */ |
301 | |
302 | conf = text_configure(sourceform); |
303 | |
304 | /* |
50d6b4bd |
305 | * Open the output file. |
d7482997 |
306 | */ |
2ac8ceac |
307 | tf.fp = fopen(conf.filename, "w"); |
308 | if (!tf.fp) { |
50d6b4bd |
309 | error(err_cantopenw, conf.filename); |
d7482997 |
310 | return; |
311 | } |
2ac8ceac |
312 | tf.charset = conf.charset; |
313 | tf.state = charset_init_state; |
d7482997 |
314 | |
315 | /* Do the title */ |
316 | for (p = sourceform; p; p = p->next) |
317 | if (p->type == para_Title) |
2ac8ceac |
318 | text_heading(&tf, NULL, NULL, p->words, |
db662ca1 |
319 | conf.atitle, conf.indent, conf.width, &conf); |
d7482997 |
320 | |
7136a6c7 |
321 | nestindent = conf.listindentbefore + conf.listindentafter; |
8902e0ed |
322 | nesting = (conf.indent_preambles ? 0 : -conf.indent); |
7136a6c7 |
323 | |
d7482997 |
324 | /* Do the main document */ |
325 | for (p = sourceform; p; p = p->next) switch (p->type) { |
326 | |
2614b01d |
327 | case para_QuotePush: |
328 | nesting += 2; |
329 | break; |
330 | case para_QuotePop: |
331 | nesting -= 2; |
332 | assert(nesting >= 0); |
333 | break; |
334 | |
7136a6c7 |
335 | case para_LcontPush: |
2614b01d |
336 | nesting += nestindent; |
7136a6c7 |
337 | break; |
338 | case para_LcontPop: |
2614b01d |
339 | nesting -= nestindent; |
340 | assert(nesting >= 0); |
7136a6c7 |
341 | break; |
342 | |
d7482997 |
343 | /* |
344 | * Things we ignore because we've already processed them or |
345 | * aren't going to touch them in this pass. |
346 | */ |
347 | case para_IM: |
348 | case para_BR: |
349 | case para_Biblio: /* only touch BiblioCited */ |
350 | case para_VersionID: |
d7482997 |
351 | case para_NoCite: |
352 | case para_Title: |
353 | break; |
354 | |
355 | /* |
356 | * Chapter titles. |
357 | */ |
358 | case para_Chapter: |
359 | case para_Appendix: |
360 | case para_UnnumberedChapter: |
2ac8ceac |
361 | text_heading(&tf, p->kwtext, p->kwtext2, p->words, |
db662ca1 |
362 | conf.achapter, conf.indent, conf.width, &conf); |
8902e0ed |
363 | nesting = 0; |
d7482997 |
364 | break; |
365 | |
366 | case para_Heading: |
367 | case para_Subsect: |
2ac8ceac |
368 | text_heading(&tf, p->kwtext, p->kwtext2, p->words, |
d7482997 |
369 | conf.asect[p->aux>=conf.nasect ? conf.nasect-1 : p->aux], |
db662ca1 |
370 | conf.indent, conf.width, &conf); |
d7482997 |
371 | break; |
372 | |
373 | case para_Rule: |
db662ca1 |
374 | text_rule(&tf, conf.indent + nesting, conf.width - nesting, &conf); |
d7482997 |
375 | break; |
376 | |
377 | case para_Normal: |
9057a0a8 |
378 | case para_Copyright: |
7136a6c7 |
379 | case para_DescribedThing: |
380 | case para_Description: |
d7482997 |
381 | case para_BiblioCited: |
382 | case para_Bullet: |
383 | case para_NumberedList: |
384 | if (p->type == para_Bullet) { |
385 | prefix = &conf.bullet; |
386 | prefixextra = NULL; |
387 | indentb = conf.listindentbefore; |
388 | indenta = conf.listindentafter; |
389 | } else if (p->type == para_NumberedList) { |
390 | prefix = p->kwtext; |
db662ca1 |
391 | prefixextra = conf.listsuffix; |
d7482997 |
392 | indentb = conf.listindentbefore; |
393 | indenta = conf.listindentafter; |
7136a6c7 |
394 | } else if (p->type == para_Description) { |
395 | prefix = NULL; |
396 | prefixextra = NULL; |
397 | indentb = conf.listindentbefore; |
398 | indenta = conf.listindentafter; |
d7482997 |
399 | } else { |
400 | prefix = NULL; |
401 | prefixextra = NULL; |
402 | indentb = indenta = 0; |
403 | } |
404 | if (p->type == para_BiblioCited) { |
405 | body = dup_word_list(p->kwtext); |
406 | for (wp = body; wp->next; wp = wp->next); |
407 | wp->next = &spaceword; |
408 | spaceword.next = p->words; |
409 | spaceword.alt = NULL; |
410 | spaceword.type = word_WhiteSpace; |
411 | spaceword.text = NULL; |
412 | } else { |
413 | wp = NULL; |
414 | body = p->words; |
415 | } |
2ac8ceac |
416 | text_para(&tf, prefix, prefixextra, body, |
2614b01d |
417 | conf.indent + nesting + indentb, indenta, |
db662ca1 |
418 | conf.width - nesting - indentb - indenta, &conf); |
d7482997 |
419 | if (wp) { |
420 | wp->next = NULL; |
421 | free_word_list(body); |
422 | } |
423 | break; |
424 | |
425 | case para_Code: |
2ac8ceac |
426 | text_codepara(&tf, p->words, |
2614b01d |
427 | conf.indent + nesting + conf.indent_code, |
428 | conf.width - nesting - 2 * conf.indent_code); |
d7482997 |
429 | break; |
430 | } |
431 | |
432 | /* Do the version ID */ |
433 | if (conf.include_version_id) { |
434 | for (p = sourceform; p; p = p->next) |
435 | if (p->type == para_VersionID) |
db662ca1 |
436 | text_versionid(&tf, p->words, &conf); |
d7482997 |
437 | } |
438 | |
439 | /* |
440 | * Tidy up |
441 | */ |
2ac8ceac |
442 | text_output(&tf, NULL); /* end charset conversion */ |
443 | fclose(tf.fp); |
e5e6bf9d |
444 | sfree(conf.asect); |
50d6b4bd |
445 | sfree(conf.filename); |
d7482997 |
446 | } |
447 | |
2ac8ceac |
448 | static void text_output(textfile *tf, const wchar_t *s) |
449 | { |
450 | char buf[256]; |
451 | int ret, len; |
452 | const wchar_t **sp; |
453 | |
454 | if (!s) { |
455 | sp = NULL; |
456 | len = 1; |
457 | } else { |
458 | sp = &s; |
459 | len = ustrlen(s); |
460 | } |
461 | |
462 | while (len > 0) { |
463 | ret = charset_from_unicode(sp, &len, buf, lenof(buf), |
464 | tf->charset, &tf->state, NULL); |
465 | if (!sp) |
466 | len = 0; |
467 | fwrite(buf, 1, ret, tf->fp); |
d7482997 |
468 | } |
d7482997 |
469 | } |
470 | |
2ac8ceac |
471 | static void text_output_many(textfile *tf, int n, wchar_t c) |
472 | { |
473 | wchar_t s[2]; |
474 | s[0] = c; |
475 | s[1] = L'\0'; |
476 | while (n--) |
477 | text_output(tf, s); |
478 | } |
d7482997 |
479 | |
db662ca1 |
480 | static void text_rdaddw(rdstring *rs, word *text, word *end, textconfig *cfg) { |
d7482997 |
481 | for (; text && text != end; text = text->next) switch (text->type) { |
482 | case word_HyperLink: |
483 | case word_HyperEnd: |
484 | case word_UpperXref: |
485 | case word_LowerXref: |
486 | case word_XrefEnd: |
487 | case word_IndexRef: |
488 | break; |
489 | |
490 | case word_Normal: |
491 | case word_Emph: |
492 | case word_Code: |
493 | case word_WeakCode: |
494 | case word_WhiteSpace: |
495 | case word_EmphSpace: |
496 | case word_CodeSpace: |
497 | case word_WkCodeSpace: |
498 | case word_Quote: |
499 | case word_EmphQuote: |
500 | case word_CodeQuote: |
501 | case word_WkCodeQuote: |
502 | assert(text->type != word_CodeQuote && |
503 | text->type != word_WkCodeQuote); |
504 | if (towordstyle(text->type) == word_Emph && |
505 | (attraux(text->aux) == attr_First || |
506 | attraux(text->aux) == attr_Only)) |
db662ca1 |
507 | rdadds(rs, cfg->startemph); |
d7482997 |
508 | else if (towordstyle(text->type) == word_Code && |
509 | (attraux(text->aux) == attr_First || |
510 | attraux(text->aux) == attr_Only)) |
db662ca1 |
511 | rdadds(rs, cfg->lquote); |
d7482997 |
512 | if (removeattr(text->type) == word_Normal) { |
db662ca1 |
513 | if (cvt_ok(cfg->charset, text->text) || !text->alt) |
2ac8ceac |
514 | rdadds(rs, text->text); |
d7482997 |
515 | else |
db662ca1 |
516 | text_rdaddw(rs, text->alt, NULL, cfg); |
d7482997 |
517 | } else if (removeattr(text->type) == word_WhiteSpace) { |
2ac8ceac |
518 | rdadd(rs, L' '); |
d7482997 |
519 | } else if (removeattr(text->type) == word_Quote) { |
db662ca1 |
520 | rdadds(rs, quoteaux(text->aux) == quote_Open ? |
521 | cfg->lquote : cfg->rquote); |
d7482997 |
522 | } |
523 | if (towordstyle(text->type) == word_Emph && |
524 | (attraux(text->aux) == attr_Last || |
525 | attraux(text->aux) == attr_Only)) |
db662ca1 |
526 | rdadds(rs, cfg->endemph); |
d7482997 |
527 | else if (towordstyle(text->type) == word_Code && |
528 | (attraux(text->aux) == attr_Last || |
529 | attraux(text->aux) == attr_Only)) |
db662ca1 |
530 | rdadds(rs, cfg->rquote); |
d7482997 |
531 | break; |
532 | } |
533 | } |
534 | |
43341922 |
535 | static int text_width(void *, word *); |
d7482997 |
536 | |
43341922 |
537 | static int text_width_list(void *ctx, word *text) { |
d7482997 |
538 | int w = 0; |
539 | while (text) { |
43341922 |
540 | w += text_width(ctx, text); |
d7482997 |
541 | text = text->next; |
542 | } |
543 | return w; |
544 | } |
545 | |
43341922 |
546 | static int text_width(void *ctx, word *text) { |
db662ca1 |
547 | textconfig *cfg = (textconfig *)ctx; |
548 | int wid; |
549 | int attr; |
43341922 |
550 | |
d7482997 |
551 | switch (text->type) { |
552 | case word_HyperLink: |
553 | case word_HyperEnd: |
554 | case word_UpperXref: |
555 | case word_LowerXref: |
556 | case word_XrefEnd: |
557 | case word_IndexRef: |
558 | return 0; |
db662ca1 |
559 | } |
560 | |
561 | assert(text->type < word_internal_endattrs); |
562 | |
563 | wid = 0; |
564 | attr = towordstyle(text->type); |
565 | if (attr == word_Emph || attr == word_Code) { |
566 | if (attraux(text->aux) == attr_Only || |
567 | attraux(text->aux) == attr_First) |
568 | wid += ustrwid(attr == word_Emph ? cfg->startemph : cfg->lquote, |
569 | cfg->charset); |
570 | } |
571 | if (attr == word_Emph || attr == word_Code) { |
572 | if (attraux(text->aux) == attr_Only || |
573 | attraux(text->aux) == attr_Last) |
574 | wid += ustrwid(attr == word_Emph ? cfg->startemph : cfg->lquote, |
575 | cfg->charset); |
576 | } |
d7482997 |
577 | |
db662ca1 |
578 | switch (text->type) { |
d7482997 |
579 | case word_Normal: |
580 | case word_Emph: |
581 | case word_Code: |
582 | case word_WeakCode: |
db662ca1 |
583 | if (cvt_ok(cfg->charset, text->text) || !text->alt) |
584 | wid += ustrwid(text->text, cfg->charset); |
585 | else |
586 | wid += text_width_list(ctx, text->alt); |
587 | return wid; |
d7482997 |
588 | |
589 | case word_WhiteSpace: |
590 | case word_EmphSpace: |
591 | case word_CodeSpace: |
592 | case word_WkCodeSpace: |
593 | case word_Quote: |
594 | case word_EmphQuote: |
595 | case word_CodeQuote: |
596 | case word_WkCodeQuote: |
597 | assert(text->type != word_CodeQuote && |
598 | text->type != word_WkCodeQuote); |
db662ca1 |
599 | if (removeattr(text->type) == word_Quote) { |
600 | if (quoteaux(text->aux) == quote_Open) |
601 | wid += ustrwid(cfg->lquote, cfg->charset); |
602 | else |
603 | wid += ustrwid(cfg->rquote, cfg->charset); |
604 | } else |
605 | wid++; /* space */ |
d7482997 |
606 | } |
db662ca1 |
607 | |
608 | return wid; |
d7482997 |
609 | } |
610 | |
2ac8ceac |
611 | static void text_heading(textfile *tf, word *tprefix, word *nprefix, |
612 | word *text, alignstruct align, |
db662ca1 |
613 | int indent, int width, textconfig *cfg) { |
2ac8ceac |
614 | rdstring t = { 0, 0, NULL }; |
d7482997 |
615 | int margin, length; |
616 | int firstlinewidth, wrapwidth; |
617 | wrappedline *wrapping, *p; |
618 | |
619 | if (align.just_numbers && nprefix) { |
db662ca1 |
620 | text_rdaddw(&t, nprefix, NULL, cfg); |
2ac8ceac |
621 | rdadds(&t, align.number_suffix); |
d7482997 |
622 | } else if (!align.just_numbers && tprefix) { |
db662ca1 |
623 | text_rdaddw(&t, tprefix, NULL, cfg); |
2ac8ceac |
624 | rdadds(&t, align.number_suffix); |
d7482997 |
625 | } |
db662ca1 |
626 | margin = length = ustrwid(t.text ? t.text : L"", cfg->charset); |
d7482997 |
627 | |
628 | if (align.align == LEFTPLUS) { |
629 | margin = indent - margin; |
630 | if (margin < 0) margin = 0; |
631 | firstlinewidth = indent + width - margin - length; |
632 | wrapwidth = width; |
633 | } else if (align.align == LEFT || align.align == CENTRE) { |
634 | margin = 0; |
635 | firstlinewidth = indent + width - length; |
636 | wrapwidth = indent + width; |
637 | } |
638 | |
2ac8ceac |
639 | wrapping = wrap_para(text, firstlinewidth, wrapwidth, |
db662ca1 |
640 | text_width, cfg, 0); |
d7482997 |
641 | for (p = wrapping; p; p = p->next) { |
db662ca1 |
642 | text_rdaddw(&t, p->begin, p->end, cfg); |
643 | length = ustrwid(t.text ? t.text : L"", cfg->charset); |
d7482997 |
644 | if (align.align == CENTRE) { |
645 | margin = (indent + width - length)/2; |
646 | if (margin < 0) margin = 0; |
647 | } |
2ac8ceac |
648 | text_output_many(tf, margin, L' '); |
649 | text_output(tf, t.text); |
650 | text_output(tf, L"\n"); |
db662ca1 |
651 | if (*align.underline) { |
2ac8ceac |
652 | text_output_many(tf, margin, L' '); |
db662ca1 |
653 | while (length > 0) { |
654 | text_output(tf, align.underline); |
655 | length -= ustrwid(align.underline, cfg->charset); |
656 | } |
2ac8ceac |
657 | text_output(tf, L"\n"); |
d7482997 |
658 | } |
659 | if (align.align == LEFTPLUS) |
660 | margin = indent; |
661 | else |
662 | margin = 0; |
663 | sfree(t.text); |
2ac8ceac |
664 | t = empty_rdstring; |
d7482997 |
665 | } |
666 | wrap_free(wrapping); |
2ac8ceac |
667 | text_output(tf, L"\n"); |
d7482997 |
668 | |
669 | sfree(t.text); |
670 | } |
671 | |
db662ca1 |
672 | static void text_rule(textfile *tf, int indent, int width, textconfig *cfg) { |
2ac8ceac |
673 | text_output_many(tf, indent, L' '); |
db662ca1 |
674 | while (width > 0) { |
675 | text_output(tf, cfg->rule); |
676 | width -= ustrwid(cfg->rule, cfg->charset); |
677 | } |
2ac8ceac |
678 | text_output_many(tf, 2, L'\n'); |
d7482997 |
679 | } |
680 | |
2ac8ceac |
681 | static void text_para(textfile *tf, word *prefix, wchar_t *prefixextra, |
db662ca1 |
682 | word *text, int indent, int extraindent, int width, |
683 | textconfig *cfg) { |
d7482997 |
684 | wrappedline *wrapping, *p; |
2ac8ceac |
685 | rdstring pfx = { 0, 0, NULL }; |
d7482997 |
686 | int e; |
687 | int firstlinewidth = width; |
688 | |
689 | if (prefix) { |
db662ca1 |
690 | text_rdaddw(&pfx, prefix, NULL, cfg); |
d7482997 |
691 | if (prefixextra) |
2ac8ceac |
692 | rdadds(&pfx, prefixextra); |
693 | text_output_many(tf, indent, L' '); |
694 | text_output(tf, pfx.text); |
c83c6495 |
695 | /* If the prefix is too long, shorten the first line to fit. */ |
db662ca1 |
696 | e = extraindent - ustrwid(pfx.text ? pfx.text : L"", cfg->charset); |
d7482997 |
697 | if (e < 0) { |
c83c6495 |
698 | firstlinewidth += e; /* this decreases it, since e < 0 */ |
d7482997 |
699 | if (firstlinewidth < 0) { |
700 | e = indent + extraindent; |
701 | firstlinewidth = width; |
2ac8ceac |
702 | text_output(tf, L"\n"); |
c83c6495 |
703 | } else |
704 | e = 0; |
d7482997 |
705 | } |
706 | sfree(pfx.text); |
707 | } else |
708 | e = indent + extraindent; |
709 | |
2ac8ceac |
710 | wrapping = wrap_para(text, firstlinewidth, width, |
db662ca1 |
711 | text_width, cfg, 0); |
d7482997 |
712 | for (p = wrapping; p; p = p->next) { |
2ac8ceac |
713 | rdstring t = { 0, 0, NULL }; |
db662ca1 |
714 | text_rdaddw(&t, p->begin, p->end, cfg); |
2ac8ceac |
715 | text_output_many(tf, e, L' '); |
716 | text_output(tf, t.text); |
717 | text_output(tf, L"\n"); |
d7482997 |
718 | e = indent + extraindent; |
719 | sfree(t.text); |
720 | } |
721 | wrap_free(wrapping); |
2ac8ceac |
722 | text_output(tf, L"\n"); |
d7482997 |
723 | } |
724 | |
2ac8ceac |
725 | static void text_codepara(textfile *tf, word *text, int indent, int width) { |
d7482997 |
726 | for (; text; text = text->next) if (text->type == word_WeakCode) { |
db662ca1 |
727 | int wid = ustrwid(text->text, tf->charset); |
728 | if (wid > width) |
729 | error(err_text_codeline, &text->fpos, wid, width); |
2ac8ceac |
730 | text_output_many(tf, indent, L' '); |
731 | text_output(tf, text->text); |
732 | text_output(tf, L"\n"); |
d7482997 |
733 | } |
734 | |
2ac8ceac |
735 | text_output(tf, L"\n"); |
d7482997 |
736 | } |
737 | |
db662ca1 |
738 | static void text_versionid(textfile *tf, word *text, textconfig *cfg) { |
2ac8ceac |
739 | rdstring t = { 0, 0, NULL }; |
d7482997 |
740 | |
db662ca1 |
741 | rdadd(&t, L'['); |
742 | text_rdaddw(&t, text, NULL, cfg); |
743 | rdadd(&t, L']'); |
2ac8ceac |
744 | rdadd(&t, L'\n'); |
d7482997 |
745 | |
2ac8ceac |
746 | text_output(tf, t.text); |
d7482997 |
747 | sfree(t.text); |
748 | } |