File: | src/usr.bin/tmux/format-draw.c |
Warning: | line 1161, column 17 The left expression of the compound assignment is an uninitialized value. The computed value will also be garbage |
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1 | /* $OpenBSD: format-draw.c,v 1.25 2021/10/26 12:22:23 nicm Exp $ */ | |||
2 | ||||
3 | /* | |||
4 | * Copyright (c) 2019 Nicholas Marriott <nicholas.marriott@gmail.com> | |||
5 | * | |||
6 | * Permission to use, copy, modify, and distribute this software for any | |||
7 | * purpose with or without fee is hereby granted, provided that the above | |||
8 | * copyright notice and this permission notice appear in all copies. | |||
9 | * | |||
10 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES | |||
11 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF | |||
12 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR | |||
13 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES | |||
14 | * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER | |||
15 | * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING | |||
16 | * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. | |||
17 | */ | |||
18 | ||||
19 | #include <sys/types.h> | |||
20 | ||||
21 | #include <stdlib.h> | |||
22 | #include <string.h> | |||
23 | ||||
24 | #include "tmux.h" | |||
25 | ||||
26 | /* Format range. */ | |||
27 | struct format_range { | |||
28 | u_int index; | |||
29 | struct screen *s; | |||
30 | ||||
31 | u_int start; | |||
32 | u_int end; | |||
33 | ||||
34 | enum style_range_type type; | |||
35 | u_int argument; | |||
36 | ||||
37 | TAILQ_ENTRY(format_range)struct { struct format_range *tqe_next; struct format_range * *tqe_prev; } entry; | |||
38 | }; | |||
39 | TAILQ_HEAD(format_ranges, format_range)struct format_ranges { struct format_range *tqh_first; struct format_range **tqh_last; }; | |||
40 | ||||
41 | /* Does this range match this style? */ | |||
42 | static int | |||
43 | format_is_type(struct format_range *fr, struct style *sy) | |||
44 | { | |||
45 | if (fr->type != sy->range_type) | |||
46 | return (0); | |||
47 | if (fr->type == STYLE_RANGE_WINDOW && | |||
48 | fr->argument != sy->range_argument) | |||
49 | return (0); | |||
50 | return (1); | |||
51 | } | |||
52 | ||||
53 | /* Free a range. */ | |||
54 | static void | |||
55 | format_free_range(struct format_ranges *frs, struct format_range *fr) | |||
56 | { | |||
57 | TAILQ_REMOVE(frs, fr, entry)do { if (((fr)->entry.tqe_next) != ((void *)0)) (fr)->entry .tqe_next->entry.tqe_prev = (fr)->entry.tqe_prev; else ( frs)->tqh_last = (fr)->entry.tqe_prev; *(fr)->entry. tqe_prev = (fr)->entry.tqe_next; ; ; } while (0); | |||
58 | free(fr); | |||
59 | } | |||
60 | ||||
61 | /* Fix range positions. */ | |||
62 | static void | |||
63 | format_update_ranges(struct format_ranges *frs, struct screen *s, u_int offset, | |||
64 | u_int start, u_int width) | |||
65 | { | |||
66 | struct format_range *fr, *fr1; | |||
67 | ||||
68 | if (frs == NULL((void *)0)) | |||
69 | return; | |||
70 | ||||
71 | TAILQ_FOREACH_SAFE(fr, frs, entry, fr1)for ((fr) = ((frs)->tqh_first); (fr) != ((void *)0) && ((fr1) = ((fr)->entry.tqe_next), 1); (fr) = (fr1)) { | |||
72 | if (fr->s != s) | |||
73 | continue; | |||
74 | ||||
75 | if (fr->end <= start || fr->start >= start + width) { | |||
76 | format_free_range(frs, fr); | |||
77 | continue; | |||
78 | } | |||
79 | ||||
80 | if (fr->start < start) | |||
81 | fr->start = start; | |||
82 | if (fr->end > start + width) | |||
83 | fr->end = start + width; | |||
84 | if (fr->start == fr->end) { | |||
85 | format_free_range(frs, fr); | |||
86 | continue; | |||
87 | } | |||
88 | ||||
89 | fr->start -= start; | |||
90 | fr->end -= start; | |||
91 | ||||
92 | fr->start += offset; | |||
93 | fr->end += offset; | |||
94 | } | |||
95 | } | |||
96 | ||||
97 | /* Draw a part of the format. */ | |||
98 | static void | |||
99 | format_draw_put(struct screen_write_ctx *octx, u_int ocx, u_int ocy, | |||
100 | struct screen *s, struct format_ranges *frs, u_int offset, u_int start, | |||
101 | u_int width) | |||
102 | { | |||
103 | /* | |||
104 | * The offset is how far from the cursor on the target screen; start | |||
105 | * and width how much to copy from the source screen. | |||
106 | */ | |||
107 | screen_write_cursormove(octx, ocx + offset, ocy, 0); | |||
108 | screen_write_fast_copy(octx, s, start, 0, width, 1); | |||
109 | format_update_ranges(frs, s, offset, start, width); | |||
110 | } | |||
111 | ||||
112 | /* Draw list part of format. */ | |||
113 | static void | |||
114 | format_draw_put_list(struct screen_write_ctx *octx, | |||
115 | u_int ocx, u_int ocy, u_int offset, u_int width, struct screen *list, | |||
116 | struct screen *list_left, struct screen *list_right, int focus_start, | |||
117 | int focus_end, struct format_ranges *frs) | |||
118 | { | |||
119 | u_int start, focus_centre; | |||
120 | ||||
121 | /* If there is enough space for the list, draw it entirely. */ | |||
122 | if (width >= list->cx) { | |||
123 | format_draw_put(octx, ocx, ocy, list, frs, offset, 0, width); | |||
124 | return; | |||
125 | } | |||
126 | ||||
127 | /* The list needs to be trimmed. Try to keep the focus visible. */ | |||
128 | focus_centre = focus_start + (focus_end - focus_start) / 2; | |||
129 | if (focus_centre < width / 2) | |||
130 | start = 0; | |||
131 | else | |||
132 | start = focus_centre - width / 2; | |||
133 | if (start + width > list->cx) | |||
134 | start = list->cx - width; | |||
135 | ||||
136 | /* Draw <> markers at either side if needed. */ | |||
137 | if (start != 0 && width > list_left->cx) { | |||
138 | screen_write_cursormove(octx, ocx + offset, ocy, 0); | |||
139 | screen_write_fast_copy(octx, list_left, 0, 0, list_left->cx, 1); | |||
140 | offset += list_left->cx; | |||
141 | start += list_left->cx; | |||
142 | width -= list_left->cx; | |||
143 | } | |||
144 | if (start + width < list->cx && width > list_right->cx) { | |||
145 | screen_write_cursormove(octx, ocx + offset + width - | |||
146 | list_right->cx, ocy, 0); | |||
147 | screen_write_fast_copy(octx, list_right, 0, 0, list_right->cx, | |||
148 | 1); | |||
149 | width -= list_right->cx; | |||
150 | } | |||
151 | ||||
152 | /* Draw the list screen itself. */ | |||
153 | format_draw_put(octx, ocx, ocy, list, frs, offset, start, width); | |||
154 | } | |||
155 | ||||
156 | /* Draw format with no list. */ | |||
157 | static void | |||
158 | format_draw_none(struct screen_write_ctx *octx, u_int available, u_int ocx, | |||
159 | u_int ocy, struct screen *left, struct screen *centre, struct screen *right, | |||
160 | struct screen *abs_centre, struct format_ranges *frs) | |||
161 | { | |||
162 | u_int width_left, width_centre, width_right, width_abs_centre; | |||
163 | ||||
164 | width_left = left->cx; | |||
165 | width_centre = centre->cx; | |||
166 | width_right = right->cx; | |||
167 | width_abs_centre = abs_centre->cx; | |||
168 | ||||
169 | /* | |||
170 | * Try to keep as much of the left and right as possible at the expense | |||
171 | * of the centre. | |||
172 | */ | |||
173 | while (width_left + width_centre + width_right > available) { | |||
174 | if (width_centre > 0) | |||
175 | width_centre--; | |||
176 | else if (width_right > 0) | |||
177 | width_right--; | |||
178 | else | |||
179 | width_left--; | |||
180 | } | |||
181 | ||||
182 | /* Write left. */ | |||
183 | format_draw_put(octx, ocx, ocy, left, frs, 0, 0, width_left); | |||
184 | ||||
185 | /* Write right at available - width_right. */ | |||
186 | format_draw_put(octx, ocx, ocy, right, frs, | |||
187 | available - width_right, | |||
188 | right->cx - width_right, | |||
189 | width_right); | |||
190 | ||||
191 | /* | |||
192 | * Write centre halfway between | |||
193 | * width_left | |||
194 | * and | |||
195 | * available - width_right. | |||
196 | */ | |||
197 | format_draw_put(octx, ocx, ocy, centre, frs, | |||
198 | width_left | |||
199 | + ((available - width_right) - width_left) / 2 | |||
200 | - width_centre / 2, | |||
201 | centre->cx / 2 - width_centre / 2, | |||
202 | width_centre); | |||
203 | ||||
204 | /* | |||
205 | * Write abs_centre in the perfect centre of all horizontal space. | |||
206 | */ | |||
207 | if (width_abs_centre > available) | |||
208 | width_abs_centre = available; | |||
209 | format_draw_put(octx, ocx, ocy, abs_centre, frs, | |||
210 | (available - width_abs_centre) / 2, | |||
211 | 0, | |||
212 | width_abs_centre); | |||
213 | } | |||
214 | ||||
215 | /* Draw format with list on the left. */ | |||
216 | static void | |||
217 | format_draw_left(struct screen_write_ctx *octx, u_int available, u_int ocx, | |||
218 | u_int ocy, struct screen *left, struct screen *centre, struct screen *right, | |||
219 | struct screen *abs_centre, struct screen *list, struct screen *list_left, | |||
220 | struct screen *list_right, struct screen *after, int focus_start, | |||
221 | int focus_end, struct format_ranges *frs) | |||
222 | { | |||
223 | u_int width_left, width_centre, width_right; | |||
224 | u_int width_list, width_after, width_abs_centre; | |||
225 | struct screen_write_ctx ctx; | |||
226 | ||||
227 | width_left = left->cx; | |||
228 | width_centre = centre->cx; | |||
229 | width_right = right->cx; | |||
230 | width_abs_centre = abs_centre->cx; | |||
231 | width_list = list->cx; | |||
232 | width_after = after->cx; | |||
233 | ||||
234 | /* | |||
235 | * Trim first the centre, then the list, then the right, then after the | |||
236 | * list, then the left. | |||
237 | */ | |||
238 | while (width_left + | |||
239 | width_centre + | |||
240 | width_right + | |||
241 | width_list + | |||
242 | width_after > available) { | |||
243 | if (width_centre > 0) | |||
244 | width_centre--; | |||
245 | else if (width_list > 0) | |||
246 | width_list--; | |||
247 | else if (width_right > 0) | |||
248 | width_right--; | |||
249 | else if (width_after > 0) | |||
250 | width_after--; | |||
251 | else | |||
252 | width_left--; | |||
253 | } | |||
254 | ||||
255 | /* If there is no list left, pass off to the no list function. */ | |||
256 | if (width_list == 0) { | |||
257 | screen_write_start(&ctx, left); | |||
258 | screen_write_fast_copy(&ctx, after, 0, 0, width_after, 1); | |||
259 | screen_write_stop(&ctx); | |||
260 | ||||
261 | format_draw_none(octx, available, ocx, ocy, left, centre, | |||
262 | right, abs_centre, frs); | |||
263 | return; | |||
264 | } | |||
265 | ||||
266 | /* Write left at 0. */ | |||
267 | format_draw_put(octx, ocx, ocy, left, frs, 0, 0, width_left); | |||
268 | ||||
269 | /* Write right at available - width_right. */ | |||
270 | format_draw_put(octx, ocx, ocy, right, frs, | |||
271 | available - width_right, | |||
272 | right->cx - width_right, | |||
273 | width_right); | |||
274 | ||||
275 | /* Write after at width_left + width_list. */ | |||
276 | format_draw_put(octx, ocx, ocy, after, frs, | |||
277 | width_left + width_list, | |||
278 | 0, | |||
279 | width_after); | |||
280 | ||||
281 | /* | |||
282 | * Write centre halfway between | |||
283 | * width_left + width_list + width_after | |||
284 | * and | |||
285 | * available - width_right. | |||
286 | */ | |||
287 | format_draw_put(octx, ocx, ocy, centre, frs, | |||
288 | (width_left + width_list + width_after) | |||
289 | + ((available - width_right) | |||
290 | - (width_left + width_list + width_after)) / 2 | |||
291 | - width_centre / 2, | |||
292 | centre->cx / 2 - width_centre / 2, | |||
293 | width_centre); | |||
294 | ||||
295 | /* | |||
296 | * The list now goes from | |||
297 | * width_left | |||
298 | * to | |||
299 | * width_left + width_list. | |||
300 | * If there is no focus given, keep the left in focus. | |||
301 | */ | |||
302 | if (focus_start == -1 || focus_end == -1) | |||
303 | focus_start = focus_end = 0; | |||
304 | format_draw_put_list(octx, ocx, ocy, width_left, width_list, list, | |||
305 | list_left, list_right, focus_start, focus_end, frs); | |||
306 | ||||
307 | /* | |||
308 | * Write abs_centre in the perfect centre of all horizontal space. | |||
309 | */ | |||
310 | if (width_abs_centre > available) | |||
311 | width_abs_centre = available; | |||
312 | format_draw_put(octx, ocx, ocy, abs_centre, frs, | |||
313 | (available - width_abs_centre) / 2, | |||
314 | 0, | |||
315 | width_abs_centre); | |||
316 | } | |||
317 | ||||
318 | /* Draw format with list in the centre. */ | |||
319 | static void | |||
320 | format_draw_centre(struct screen_write_ctx *octx, u_int available, u_int ocx, | |||
321 | u_int ocy, struct screen *left, struct screen *centre, struct screen *right, | |||
322 | struct screen *abs_centre, struct screen *list, struct screen *list_left, | |||
323 | struct screen *list_right, struct screen *after, int focus_start, | |||
324 | int focus_end, struct format_ranges *frs) | |||
325 | { | |||
326 | u_int width_left, width_centre, width_right, middle; | |||
327 | u_int width_list, width_after, width_abs_centre; | |||
328 | struct screen_write_ctx ctx; | |||
329 | ||||
330 | width_left = left->cx; | |||
331 | width_centre = centre->cx; | |||
332 | width_right = right->cx; | |||
333 | width_abs_centre = abs_centre->cx; | |||
334 | width_list = list->cx; | |||
335 | width_after = after->cx; | |||
336 | ||||
337 | /* | |||
338 | * Trim first the list, then after the list, then the centre, then the | |||
339 | * right, then the left. | |||
340 | */ | |||
341 | while (width_left + | |||
342 | width_centre + | |||
343 | width_right + | |||
344 | width_list + | |||
345 | width_after > available) { | |||
346 | if (width_list > 0) | |||
347 | width_list--; | |||
348 | else if (width_after > 0) | |||
349 | width_after--; | |||
350 | else if (width_centre > 0) | |||
351 | width_centre--; | |||
352 | else if (width_right > 0) | |||
353 | width_right--; | |||
354 | else | |||
355 | width_left--; | |||
356 | } | |||
357 | ||||
358 | /* If there is no list left, pass off to the no list function. */ | |||
359 | if (width_list == 0) { | |||
360 | screen_write_start(&ctx, centre); | |||
361 | screen_write_fast_copy(&ctx, after, 0, 0, width_after, 1); | |||
362 | screen_write_stop(&ctx); | |||
363 | ||||
364 | format_draw_none(octx, available, ocx, ocy, left, centre, | |||
365 | right, abs_centre, frs); | |||
366 | return; | |||
367 | } | |||
368 | ||||
369 | /* Write left at 0. */ | |||
370 | format_draw_put(octx, ocx, ocy, left, frs, 0, 0, width_left); | |||
371 | ||||
372 | /* Write right at available - width_right. */ | |||
373 | format_draw_put(octx, ocx, ocy, right, frs, | |||
374 | available - width_right, | |||
375 | right->cx - width_right, | |||
376 | width_right); | |||
377 | ||||
378 | /* | |||
379 | * All three centre sections are offset from the middle of the | |||
380 | * available space. | |||
381 | */ | |||
382 | middle = (width_left + ((available - width_right) - width_left) / 2); | |||
383 | ||||
384 | /* | |||
385 | * Write centre at | |||
386 | * middle - width_list / 2 - width_centre. | |||
387 | */ | |||
388 | format_draw_put(octx, ocx, ocy, centre, frs, | |||
389 | middle - width_list / 2 - width_centre, | |||
390 | 0, | |||
391 | width_centre); | |||
392 | ||||
393 | /* | |||
394 | * Write after at | |||
395 | * middle - width_list / 2 + width_list | |||
396 | */ | |||
397 | format_draw_put(octx, ocx, ocy, after, frs, | |||
398 | middle - width_list / 2 + width_list, | |||
399 | 0, | |||
400 | width_after); | |||
401 | ||||
402 | /* | |||
403 | * The list now goes from | |||
404 | * middle - width_list / 2 | |||
405 | * to | |||
406 | * middle + width_list / 2 | |||
407 | * If there is no focus given, keep the centre in focus. | |||
408 | */ | |||
409 | if (focus_start == -1 || focus_end == -1) | |||
410 | focus_start = focus_end = list->cx / 2; | |||
411 | format_draw_put_list(octx, ocx, ocy, middle - width_list / 2, | |||
412 | width_list, list, list_left, list_right, focus_start, focus_end, | |||
413 | frs); | |||
414 | ||||
415 | /* | |||
416 | * Write abs_centre in the perfect centre of all horizontal space. | |||
417 | */ | |||
418 | if (width_abs_centre > available) | |||
419 | width_abs_centre = available; | |||
420 | format_draw_put(octx, ocx, ocy, abs_centre, frs, | |||
421 | (available - width_abs_centre) / 2, | |||
422 | 0, | |||
423 | width_abs_centre); | |||
424 | } | |||
425 | ||||
426 | /* Draw format with list on the right. */ | |||
427 | static void | |||
428 | format_draw_right(struct screen_write_ctx *octx, u_int available, u_int ocx, | |||
429 | u_int ocy, struct screen *left, struct screen *centre, struct screen *right, | |||
430 | struct screen *abs_centre, struct screen *list, | |||
431 | struct screen *list_left, struct screen *list_right, struct screen *after, | |||
432 | int focus_start, int focus_end, struct format_ranges *frs) | |||
433 | { | |||
434 | u_int width_left, width_centre, width_right; | |||
435 | u_int width_list, width_after, width_abs_centre; | |||
436 | struct screen_write_ctx ctx; | |||
437 | ||||
438 | width_left = left->cx; | |||
439 | width_centre = centre->cx; | |||
440 | width_right = right->cx; | |||
441 | width_abs_centre = abs_centre->cx; | |||
442 | width_list = list->cx; | |||
443 | width_after = after->cx; | |||
444 | ||||
445 | /* | |||
446 | * Trim first the centre, then the list, then the right, then | |||
447 | * after the list, then the left. | |||
448 | */ | |||
449 | while (width_left + | |||
450 | width_centre + | |||
451 | width_right + | |||
452 | width_list + | |||
453 | width_after > available) { | |||
454 | if (width_centre > 0) | |||
455 | width_centre--; | |||
456 | else if (width_list > 0) | |||
457 | width_list--; | |||
458 | else if (width_right > 0) | |||
459 | width_right--; | |||
460 | else if (width_after > 0) | |||
461 | width_after--; | |||
462 | else | |||
463 | width_left--; | |||
464 | } | |||
465 | ||||
466 | /* If there is no list left, pass off to the no list function. */ | |||
467 | if (width_list == 0) { | |||
468 | screen_write_start(&ctx, right); | |||
469 | screen_write_fast_copy(&ctx, after, 0, 0, width_after, 1); | |||
470 | screen_write_stop(&ctx); | |||
471 | ||||
472 | format_draw_none(octx, available, ocx, ocy, left, centre, | |||
473 | right, abs_centre, frs); | |||
474 | return; | |||
475 | } | |||
476 | ||||
477 | /* Write left at 0. */ | |||
478 | format_draw_put(octx, ocx, ocy, left, frs, 0, 0, width_left); | |||
479 | ||||
480 | /* Write after at available - width_after. */ | |||
481 | format_draw_put(octx, ocx, ocy, after, frs, | |||
482 | available - width_after, | |||
483 | after->cx - width_after, | |||
484 | width_after); | |||
485 | ||||
486 | /* | |||
487 | * Write right at | |||
488 | * available - width_right - width_list - width_after. | |||
489 | */ | |||
490 | format_draw_put(octx, ocx, ocy, right, frs, | |||
491 | available - width_right - width_list - width_after, | |||
492 | 0, | |||
493 | width_right); | |||
494 | ||||
495 | /* | |||
496 | * Write centre halfway between | |||
497 | * width_left | |||
498 | * and | |||
499 | * available - width_right - width_list - width_after. | |||
500 | */ | |||
501 | format_draw_put(octx, ocx, ocy, centre, frs, | |||
502 | width_left | |||
503 | + ((available - width_right - width_list - width_after) | |||
504 | - width_left) / 2 | |||
505 | - width_centre / 2, | |||
506 | centre->cx / 2 - width_centre / 2, | |||
507 | width_centre); | |||
508 | ||||
509 | /* | |||
510 | * The list now goes from | |||
511 | * available - width_list - width_after | |||
512 | * to | |||
513 | * available - width_after | |||
514 | * If there is no focus given, keep the right in focus. | |||
515 | */ | |||
516 | if (focus_start == -1 || focus_end == -1) | |||
517 | focus_start = focus_end = 0; | |||
518 | format_draw_put_list(octx, ocx, ocy, available - width_list - | |||
519 | width_after, width_list, list, list_left, list_right, focus_start, | |||
520 | focus_end, frs); | |||
521 | ||||
522 | /* | |||
523 | * Write abs_centre in the perfect centre of all horizontal space. | |||
524 | */ | |||
525 | if (width_abs_centre > available) | |||
526 | width_abs_centre = available; | |||
527 | format_draw_put(octx, ocx, ocy, abs_centre, frs, | |||
528 | (available - width_abs_centre) / 2, | |||
529 | 0, | |||
530 | width_abs_centre); | |||
531 | } | |||
532 | ||||
533 | static void | |||
534 | format_draw_absolute_centre(struct screen_write_ctx *octx, u_int available, | |||
535 | u_int ocx, u_int ocy, struct screen *left, struct screen *centre, | |||
536 | struct screen *right, struct screen *abs_centre, struct screen *list, | |||
537 | struct screen *list_left, struct screen *list_right, struct screen *after, | |||
538 | int focus_start, int focus_end, struct format_ranges *frs) | |||
539 | { | |||
540 | u_int width_left, width_centre, width_right, width_abs_centre; | |||
541 | u_int width_list, width_after, middle, abs_centre_offset; | |||
542 | ||||
543 | width_left = left->cx; | |||
544 | width_centre = centre->cx; | |||
545 | width_right = right->cx; | |||
546 | width_abs_centre = abs_centre->cx; | |||
547 | width_list = list->cx; | |||
548 | width_after = after->cx; | |||
549 | ||||
550 | /* | |||
551 | * Trim first centre, then the right, then the left. | |||
552 | */ | |||
553 | while (width_left + | |||
554 | width_centre + | |||
555 | width_right > available) { | |||
556 | if (width_centre > 0) | |||
557 | width_centre--; | |||
558 | else if (width_right > 0) | |||
559 | width_right--; | |||
560 | else | |||
561 | width_left--; | |||
562 | } | |||
563 | ||||
564 | /* | |||
565 | * We trim list after and abs_centre independently, as we are drawing | |||
566 | * them over the rest. Trim first the list, then after the list, then | |||
567 | * abs_centre. | |||
568 | */ | |||
569 | while (width_list + width_after + width_abs_centre > available) { | |||
570 | if (width_list > 0) | |||
571 | width_list--; | |||
572 | else if (width_after > 0) | |||
573 | width_after--; | |||
574 | else | |||
575 | width_abs_centre--; | |||
576 | } | |||
577 | ||||
578 | /* Write left at 0. */ | |||
579 | format_draw_put(octx, ocx, ocy, left, frs, 0, 0, width_left); | |||
580 | ||||
581 | /* Write right at available - width_right. */ | |||
582 | format_draw_put(octx, ocx, ocy, right, frs, | |||
583 | available - width_right, | |||
584 | right->cx - width_right, | |||
585 | width_right); | |||
586 | ||||
587 | /* | |||
588 | * Keep writing centre at the relative centre. Only the list is written | |||
589 | * in the absolute centre of the horizontal space. | |||
590 | */ | |||
591 | middle = (width_left + ((available - width_right) - width_left) / 2); | |||
592 | ||||
593 | /* | |||
594 | * Write centre at | |||
595 | * middle - width_centre. | |||
596 | */ | |||
597 | format_draw_put(octx, ocx, ocy, centre, frs, | |||
598 | middle - width_centre, | |||
599 | 0, | |||
600 | width_centre); | |||
601 | ||||
602 | /* | |||
603 | * If there is no focus given, keep the centre in focus. | |||
604 | */ | |||
605 | if (focus_start == -1 || focus_end == -1) | |||
606 | focus_start = focus_end = list->cx / 2; | |||
607 | ||||
608 | /* | |||
609 | * We centre abs_centre and the list together, so their shared centre is | |||
610 | * in the perfect centre of horizontal space. | |||
611 | */ | |||
612 | abs_centre_offset = (available - width_list - width_abs_centre) / 2; | |||
613 | ||||
614 | /* | |||
615 | * Write abs_centre before the list. | |||
616 | */ | |||
617 | format_draw_put(octx, ocx, ocy, abs_centre, frs, abs_centre_offset, | |||
618 | 0, width_abs_centre); | |||
619 | abs_centre_offset += width_abs_centre; | |||
620 | ||||
621 | /* | |||
622 | * Draw the list in the absolute centre | |||
623 | */ | |||
624 | format_draw_put_list(octx, ocx, ocy, abs_centre_offset, width_list, | |||
625 | list, list_left, list_right, focus_start, focus_end, frs); | |||
626 | abs_centre_offset += width_list; | |||
627 | ||||
628 | /* | |||
629 | * Write after at the end of the centre | |||
630 | */ | |||
631 | format_draw_put(octx, ocx, ocy, after, frs, abs_centre_offset, 0, | |||
632 | width_after); | |||
633 | } | |||
634 | ||||
635 | /* Get width and count of any leading #s. */ | |||
636 | static const char * | |||
637 | format_leading_hashes(const char *cp, u_int *n, u_int *width) | |||
638 | { | |||
639 | for (*n = 0; cp[*n] == '#'; (*n)++) | |||
640 | /* nothing */; | |||
641 | if (*n == 0) { | |||
642 | *width = 0; | |||
643 | return (cp); | |||
644 | } | |||
645 | if (cp[*n] != '[') { | |||
646 | if ((*n % 2) == 0) | |||
647 | *width = (*n / 2); | |||
648 | else | |||
649 | *width = (*n / 2) + 1; | |||
650 | return (cp + *n); | |||
651 | } | |||
652 | *width = (*n / 2); | |||
653 | if ((*n % 2) == 0) { | |||
654 | /* | |||
655 | * An even number of #s means that all #s are escaped, so not a | |||
656 | * style. The caller should not skip this. Return pointing to | |||
657 | * the [. | |||
658 | */ | |||
659 | return (cp + *n); | |||
660 | } | |||
661 | /* This is a style, so return pointing to the #. */ | |||
662 | return (cp + *n - 1); | |||
663 | } | |||
664 | ||||
665 | /* Draw multiple characters. */ | |||
666 | static void | |||
667 | format_draw_many(struct screen_write_ctx *ctx, struct style *sy, char ch, | |||
668 | u_int n) | |||
669 | { | |||
670 | u_int i; | |||
671 | ||||
672 | utf8_set(&sy->gc.data, ch); | |||
673 | for (i = 0; i < n; i++) | |||
674 | screen_write_cell(ctx, &sy->gc); | |||
675 | } | |||
676 | ||||
677 | /* Draw a format to a screen. */ | |||
678 | void | |||
679 | format_draw(struct screen_write_ctx *octx, const struct grid_cell *base, | |||
680 | u_int available, const char *expanded, struct style_ranges *srs, | |||
681 | int default_colours) | |||
682 | { | |||
683 | enum { LEFT, | |||
684 | CENTRE, | |||
685 | RIGHT, | |||
686 | ABSOLUTE_CENTRE, | |||
687 | LIST, | |||
688 | LIST_LEFT, | |||
689 | LIST_RIGHT, | |||
690 | AFTER, | |||
691 | TOTAL } current = LEFT, last = LEFT; | |||
692 | const char *names[] = { "LEFT", | |||
693 | "CENTRE", | |||
694 | "RIGHT", | |||
695 | "ABSOLUTE_CENTRE", | |||
696 | "LIST", | |||
697 | "LIST_LEFT", | |||
698 | "LIST_RIGHT", | |||
699 | "AFTER" }; | |||
700 | size_t size = strlen(expanded); | |||
701 | struct screen *os = octx->s, s[TOTAL]; | |||
702 | struct screen_write_ctx ctx[TOTAL]; | |||
703 | u_int ocx = os->cx, ocy = os->cy, n, i, width[TOTAL]; | |||
704 | u_int map[] = { LEFT, | |||
705 | LEFT, | |||
706 | CENTRE, | |||
707 | RIGHT, | |||
708 | ABSOLUTE_CENTRE }; | |||
709 | int focus_start = -1, focus_end = -1; | |||
710 | int list_state = -1, fill = -1, even; | |||
711 | enum style_align list_align = STYLE_ALIGN_DEFAULT; | |||
712 | struct grid_cell gc, current_default; | |||
713 | struct style sy, saved_sy; | |||
714 | struct utf8_data *ud = &sy.gc.data; | |||
715 | const char *cp, *end; | |||
716 | enum utf8_state more; | |||
717 | char *tmp; | |||
718 | struct format_range *fr = NULL((void *)0), *fr1; | |||
719 | struct format_ranges frs; | |||
720 | struct style_range *sr; | |||
721 | ||||
722 | memcpy(¤t_default, base, sizeof current_default); | |||
723 | style_set(&sy, ¤t_default); | |||
724 | TAILQ_INIT(&frs)do { (&frs)->tqh_first = ((void *)0); (&frs)->tqh_last = &(&frs)->tqh_first; } while (0); | |||
725 | log_debug("%s: %s", __func__, expanded); | |||
726 | ||||
727 | /* | |||
728 | * We build three screens for left, right, centre alignment, one for | |||
729 | * the list, one for anything after the list and two for the list left | |||
730 | * and right markers. | |||
731 | */ | |||
732 | for (i = 0; i < TOTAL; i++) { | |||
733 | screen_init(&s[i], size, 1, 0); | |||
734 | screen_write_start(&ctx[i], &s[i]); | |||
735 | screen_write_clearendofline(&ctx[i], current_default.bg); | |||
736 | width[i] = 0; | |||
737 | } | |||
738 | ||||
739 | /* | |||
740 | * Walk the string and add to the corresponding screens, | |||
741 | * parsing styles as we go. | |||
742 | */ | |||
743 | cp = expanded; | |||
744 | while (*cp != '\0') { | |||
745 | /* Handle sequences of #. */ | |||
746 | if (cp[0] == '#' && cp[1] != '[' && cp[1] != '\0') { | |||
747 | for (n = 1; cp[n] == '#'; n++) | |||
748 | /* nothing */; | |||
749 | even = ((n % 2) == 0); | |||
750 | if (cp[n] != '[') { | |||
751 | cp += n; | |||
752 | if (even) | |||
753 | n = (n / 2); | |||
754 | else | |||
755 | n = (n / 2) + 1; | |||
756 | width[current] += n; | |||
757 | format_draw_many(&ctx[current], &sy, '#', n); | |||
758 | continue; | |||
759 | } | |||
760 | if (even) | |||
761 | cp += (n + 1); | |||
762 | else | |||
763 | cp += (n - 1); | |||
764 | if (sy.ignore) | |||
765 | continue; | |||
766 | format_draw_many(&ctx[current], &sy, '#', n / 2); | |||
767 | width[current] += (n / 2); | |||
768 | if (even) { | |||
769 | utf8_set(ud, '['); | |||
770 | screen_write_cell(&ctx[current], &sy.gc); | |||
771 | width[current]++; | |||
772 | } | |||
773 | continue; | |||
774 | } | |||
775 | ||||
776 | /* Is this not a style? */ | |||
777 | if (cp[0] != '#' || cp[1] != '[' || sy.ignore) { | |||
778 | /* See if this is a UTF-8 character. */ | |||
779 | if ((more = utf8_open(ud, *cp)) == UTF8_MORE) { | |||
780 | while (*++cp != '\0' && more == UTF8_MORE) | |||
781 | more = utf8_append(ud, *cp); | |||
782 | if (more != UTF8_DONE) | |||
783 | cp -= ud->have; | |||
784 | } | |||
785 | ||||
786 | /* Not a UTF-8 character - ASCII or not valid. */ | |||
787 | if (more != UTF8_DONE) { | |||
788 | if (*cp < 0x20 || *cp > 0x7e) { | |||
789 | /* Ignore nonprintable characters. */ | |||
790 | cp++; | |||
791 | continue; | |||
792 | } | |||
793 | utf8_set(ud, *cp); | |||
794 | cp++; | |||
795 | } | |||
796 | ||||
797 | /* Draw the cell to the current screen. */ | |||
798 | screen_write_cell(&ctx[current], &sy.gc); | |||
799 | width[current] += ud->width; | |||
800 | continue; | |||
801 | } | |||
802 | ||||
803 | /* This is a style. Work out where the end is and parse it. */ | |||
804 | end = format_skip(cp + 2, "]"); | |||
805 | if (end == NULL((void *)0)) { | |||
806 | log_debug("%s: no terminating ] at '%s'", __func__, | |||
807 | cp + 2); | |||
808 | TAILQ_FOREACH_SAFE(fr, &frs, entry, fr1)for ((fr) = ((&frs)->tqh_first); (fr) != ((void *)0) && ((fr1) = ((fr)->entry.tqe_next), 1); (fr) = (fr1)) | |||
809 | format_free_range(&frs, fr); | |||
810 | goto out; | |||
811 | } | |||
812 | tmp = xstrndup(cp + 2, end - (cp + 2)); | |||
813 | style_copy(&saved_sy, &sy); | |||
814 | if (style_parse(&sy, ¤t_default, tmp) != 0) { | |||
815 | log_debug("%s: invalid style '%s'", __func__, tmp); | |||
816 | free(tmp); | |||
817 | cp = end + 1; | |||
818 | continue; | |||
819 | } | |||
820 | log_debug("%s: style '%s' -> '%s'", __func__, tmp, | |||
821 | style_tostring(&sy)); | |||
822 | free(tmp); | |||
823 | if (default_colours) { | |||
824 | sy.gc.bg = base->bg; | |||
825 | sy.gc.fg = base->fg; | |||
826 | } | |||
827 | ||||
828 | /* If this style has a fill colour, store it for later. */ | |||
829 | if (sy.fill != 8) | |||
830 | fill = sy.fill; | |||
831 | ||||
832 | /* If this style pushed or popped the default, update it. */ | |||
833 | if (sy.default_type == STYLE_DEFAULT_PUSH) { | |||
834 | memcpy(¤t_default, &saved_sy.gc, | |||
835 | sizeof current_default); | |||
836 | sy.default_type = STYLE_DEFAULT_BASE; | |||
837 | } else if (sy.default_type == STYLE_DEFAULT_POP) { | |||
838 | memcpy(¤t_default, base, sizeof current_default); | |||
839 | sy.default_type = STYLE_DEFAULT_BASE; | |||
840 | } | |||
841 | ||||
842 | /* Check the list state. */ | |||
843 | switch (sy.list) { | |||
844 | case STYLE_LIST_ON: | |||
845 | /* | |||
846 | * Entering the list, exiting a marker, or exiting the | |||
847 | * focus. | |||
848 | */ | |||
849 | if (list_state != 0) { | |||
850 | if (fr != NULL((void *)0)) { /* abort any region */ | |||
851 | free(fr); | |||
852 | fr = NULL((void *)0); | |||
853 | } | |||
854 | list_state = 0; | |||
855 | list_align = sy.align; | |||
856 | } | |||
857 | ||||
858 | /* End the focus if started. */ | |||
859 | if (focus_start != -1 && focus_end == -1) | |||
860 | focus_end = s[LIST].cx; | |||
861 | ||||
862 | current = LIST; | |||
863 | break; | |||
864 | case STYLE_LIST_FOCUS: | |||
865 | /* Entering the focus. */ | |||
866 | if (list_state != 0) /* not inside the list */ | |||
867 | break; | |||
868 | if (focus_start == -1) /* focus already started */ | |||
869 | focus_start = s[LIST].cx; | |||
870 | break; | |||
871 | case STYLE_LIST_OFF: | |||
872 | /* Exiting or outside the list. */ | |||
873 | if (list_state == 0) { | |||
874 | if (fr != NULL((void *)0)) { /* abort any region */ | |||
875 | free(fr); | |||
876 | fr = NULL((void *)0); | |||
877 | } | |||
878 | if (focus_start != -1 && focus_end == -1) | |||
879 | focus_end = s[LIST].cx; | |||
880 | ||||
881 | map[list_align] = AFTER; | |||
882 | if (list_align == STYLE_ALIGN_LEFT) | |||
883 | map[STYLE_ALIGN_DEFAULT] = AFTER; | |||
884 | list_state = 1; | |||
885 | } | |||
886 | current = map[sy.align]; | |||
887 | break; | |||
888 | case STYLE_LIST_LEFT_MARKER: | |||
889 | /* Entering left marker. */ | |||
890 | if (list_state != 0) /* not inside the list */ | |||
891 | break; | |||
892 | if (s[LIST_LEFT].cx != 0) /* already have marker */ | |||
893 | break; | |||
894 | if (fr != NULL((void *)0)) { /* abort any region */ | |||
895 | free(fr); | |||
896 | fr = NULL((void *)0); | |||
897 | } | |||
898 | if (focus_start != -1 && focus_end == -1) | |||
899 | focus_start = focus_end = -1; | |||
900 | current = LIST_LEFT; | |||
901 | break; | |||
902 | case STYLE_LIST_RIGHT_MARKER: | |||
903 | /* Entering right marker. */ | |||
904 | if (list_state != 0) /* not inside the list */ | |||
905 | break; | |||
906 | if (s[LIST_RIGHT].cx != 0) /* already have marker */ | |||
907 | break; | |||
908 | if (fr != NULL((void *)0)) { /* abort any region */ | |||
909 | free(fr); | |||
910 | fr = NULL((void *)0); | |||
911 | } | |||
912 | if (focus_start != -1 && focus_end == -1) | |||
913 | focus_start = focus_end = -1; | |||
914 | current = LIST_RIGHT; | |||
915 | break; | |||
916 | } | |||
917 | if (current != last) { | |||
918 | log_debug("%s: change %s -> %s", __func__, | |||
919 | names[last], names[current]); | |||
920 | last = current; | |||
921 | } | |||
922 | ||||
923 | /* | |||
924 | * Check if the range style has changed and if so end the | |||
925 | * current range and start a new one if needed. | |||
926 | */ | |||
927 | if (srs != NULL((void *)0)) { | |||
928 | if (fr != NULL((void *)0) && !format_is_type(fr, &sy)) { | |||
929 | if (s[current].cx != fr->start) { | |||
930 | fr->end = s[current].cx + 1; | |||
931 | TAILQ_INSERT_TAIL(&frs, fr, entry)do { (fr)->entry.tqe_next = ((void *)0); (fr)->entry.tqe_prev = (&frs)->tqh_last; *(&frs)->tqh_last = (fr); ( &frs)->tqh_last = &(fr)->entry.tqe_next; } while (0); | |||
932 | } else | |||
933 | free(fr); | |||
934 | fr = NULL((void *)0); | |||
935 | } | |||
936 | if (fr == NULL((void *)0) && sy.range_type != STYLE_RANGE_NONE) { | |||
937 | fr = xcalloc(1, sizeof *fr); | |||
938 | fr->index = current; | |||
939 | ||||
940 | fr->s = &s[current]; | |||
941 | fr->start = s[current].cx; | |||
942 | ||||
943 | fr->type = sy.range_type; | |||
944 | fr->argument = sy.range_argument; | |||
945 | } | |||
946 | } | |||
947 | ||||
948 | cp = end + 1; | |||
949 | } | |||
950 | free(fr); | |||
951 | ||||
952 | for (i = 0; i < TOTAL; i++) { | |||
953 | screen_write_stop(&ctx[i]); | |||
954 | log_debug("%s: width %s is %u", __func__, names[i], width[i]); | |||
955 | } | |||
956 | if (focus_start != -1 && focus_end != -1) | |||
957 | log_debug("%s: focus %d-%d", __func__, focus_start, focus_end); | |||
958 | TAILQ_FOREACH(fr, &frs, entry)for((fr) = ((&frs)->tqh_first); (fr) != ((void *)0); ( fr) = ((fr)->entry.tqe_next)) { | |||
959 | log_debug("%s: range %d|%u is %s %u-%u", __func__, fr->type, | |||
960 | fr->argument, names[fr->index], fr->start, fr->end); | |||
961 | } | |||
962 | ||||
963 | /* Clear the available area. */ | |||
964 | if (fill != -1) { | |||
965 | memcpy(&gc, &grid_default_cell, sizeof gc); | |||
966 | gc.bg = fill; | |||
967 | for (i = 0; i < available; i++) | |||
968 | screen_write_putc(octx, &gc, ' '); | |||
969 | } | |||
970 | ||||
971 | /* | |||
972 | * Draw the screens. How they are arranged depends on where the list | |||
973 | * appears. | |||
974 | */ | |||
975 | switch (list_align) { | |||
976 | case STYLE_ALIGN_DEFAULT: | |||
977 | /* No list. */ | |||
978 | format_draw_none(octx, available, ocx, ocy, &s[LEFT], | |||
979 | &s[CENTRE], &s[RIGHT], &s[ABSOLUTE_CENTRE], &frs); | |||
980 | break; | |||
981 | case STYLE_ALIGN_LEFT: | |||
982 | /* List is part of the left. */ | |||
983 | format_draw_left(octx, available, ocx, ocy, &s[LEFT], | |||
984 | &s[CENTRE], &s[RIGHT], &s[ABSOLUTE_CENTRE], &s[LIST], | |||
985 | &s[LIST_LEFT], &s[LIST_RIGHT], &s[AFTER], | |||
986 | focus_start, focus_end, &frs); | |||
987 | break; | |||
988 | case STYLE_ALIGN_CENTRE: | |||
989 | /* List is part of the centre. */ | |||
990 | format_draw_centre(octx, available, ocx, ocy, &s[LEFT], | |||
991 | &s[CENTRE], &s[RIGHT], &s[ABSOLUTE_CENTRE], &s[LIST], | |||
992 | &s[LIST_LEFT], &s[LIST_RIGHT], &s[AFTER], | |||
993 | focus_start, focus_end, &frs); | |||
994 | break; | |||
995 | case STYLE_ALIGN_RIGHT: | |||
996 | /* List is part of the right. */ | |||
997 | format_draw_right(octx, available, ocx, ocy, &s[LEFT], | |||
998 | &s[CENTRE], &s[RIGHT], &s[ABSOLUTE_CENTRE], &s[LIST], | |||
999 | &s[LIST_LEFT], &s[LIST_RIGHT], &s[AFTER], | |||
1000 | focus_start, focus_end, &frs); | |||
1001 | break; | |||
1002 | case STYLE_ALIGN_ABSOLUTE_CENTRE: | |||
1003 | /* List is in the centre of the entire horizontal space. */ | |||
1004 | format_draw_absolute_centre(octx, available, ocx, ocy, &s[LEFT], | |||
1005 | &s[CENTRE], &s[RIGHT], &s[ABSOLUTE_CENTRE], &s[LIST], | |||
1006 | &s[LIST_LEFT], &s[LIST_RIGHT], &s[AFTER], | |||
1007 | focus_start, focus_end, &frs); | |||
1008 | break; | |||
1009 | } | |||
1010 | ||||
1011 | /* Create ranges to return. */ | |||
1012 | TAILQ_FOREACH_SAFE(fr, &frs, entry, fr1)for ((fr) = ((&frs)->tqh_first); (fr) != ((void *)0) && ((fr1) = ((fr)->entry.tqe_next), 1); (fr) = (fr1)) { | |||
1013 | sr = xcalloc(1, sizeof *sr); | |||
1014 | sr->type = fr->type; | |||
1015 | sr->argument = fr->argument; | |||
1016 | sr->start = fr->start; | |||
1017 | sr->end = fr->end; | |||
1018 | TAILQ_INSERT_TAIL(srs, sr, entry)do { (sr)->entry.tqe_next = ((void *)0); (sr)->entry.tqe_prev = (srs)->tqh_last; *(srs)->tqh_last = (sr); (srs)-> tqh_last = &(sr)->entry.tqe_next; } while (0); | |||
1019 | ||||
1020 | log_debug("%s: range %d|%u at %u-%u", __func__, sr->type, | |||
1021 | sr->argument, sr->start, sr->end); | |||
1022 | ||||
1023 | format_free_range(&frs, fr); | |||
1024 | } | |||
1025 | ||||
1026 | out: | |||
1027 | /* Free the screens. */ | |||
1028 | for (i = 0; i < TOTAL; i++) | |||
1029 | screen_free(&s[i]); | |||
1030 | ||||
1031 | /* Restore the original cursor position. */ | |||
1032 | screen_write_cursormove(octx, ocx, ocy, 0); | |||
1033 | } | |||
1034 | ||||
1035 | /* Get width, taking #[] into account. */ | |||
1036 | u_int | |||
1037 | format_width(const char *expanded) | |||
1038 | { | |||
1039 | const char *cp, *end; | |||
1040 | u_int n, leading_width, width = 0; | |||
1041 | struct utf8_data ud; | |||
1042 | enum utf8_state more; | |||
1043 | ||||
1044 | cp = expanded; | |||
1045 | while (*cp != '\0') { | |||
1046 | if (*cp == '#') { | |||
1047 | end = format_leading_hashes(cp, &n, &leading_width); | |||
1048 | width += leading_width; | |||
1049 | cp = end; | |||
1050 | if (*cp == '#') { | |||
1051 | end = format_skip(cp + 2, "]"); | |||
1052 | if (end == NULL((void *)0)) | |||
1053 | return (0); | |||
1054 | cp = end + 1; | |||
1055 | } | |||
1056 | } else if ((more = utf8_open(&ud, *cp)) == UTF8_MORE) { | |||
1057 | while (*++cp != '\0' && more == UTF8_MORE) | |||
1058 | more = utf8_append(&ud, *cp); | |||
1059 | if (more == UTF8_DONE) | |||
1060 | width += ud.width; | |||
1061 | else | |||
1062 | cp -= ud.have; | |||
1063 | } else if (*cp > 0x1f && *cp < 0x7f) { | |||
1064 | width++; | |||
1065 | cp++; | |||
1066 | } else | |||
1067 | cp++; | |||
1068 | } | |||
1069 | return (width); | |||
1070 | } | |||
1071 | ||||
1072 | /* | |||
1073 | * Trim on the left, taking #[] into account. Note, we copy the whole set of | |||
1074 | * unescaped #s, but only add their escaped size to width. This is because the | |||
1075 | * format_draw function will actually do the escaping when it runs | |||
1076 | */ | |||
1077 | char * | |||
1078 | format_trim_left(const char *expanded, u_int limit) | |||
1079 | { | |||
1080 | char *copy, *out; | |||
1081 | const char *cp = expanded, *end; | |||
1082 | u_int n, width = 0, leading_width; | |||
1083 | struct utf8_data ud; | |||
1084 | enum utf8_state more; | |||
1085 | ||||
1086 | out = copy = xcalloc(1, strlen(expanded) + 1); | |||
1087 | while (*cp != '\0') { | |||
1088 | if (width >= limit) | |||
1089 | break; | |||
1090 | if (*cp == '#') { | |||
1091 | end = format_leading_hashes(cp, &n, &leading_width); | |||
1092 | if (leading_width > limit - width) | |||
1093 | leading_width = limit - width; | |||
1094 | if (leading_width != 0) { | |||
1095 | if (n == 1) | |||
1096 | *out++ = '#'; | |||
1097 | else { | |||
1098 | memset(out, '#', 2 * leading_width); | |||
1099 | out += 2 * leading_width; | |||
1100 | } | |||
1101 | width += leading_width; | |||
1102 | } | |||
1103 | cp = end; | |||
1104 | if (*cp == '#') { | |||
1105 | end = format_skip(cp + 2, "]"); | |||
1106 | if (end == NULL((void *)0)) | |||
1107 | break; | |||
1108 | memcpy(out, cp, end + 1 - cp); | |||
1109 | out += (end + 1 - cp); | |||
1110 | cp = end + 1; | |||
1111 | } | |||
1112 | } else if ((more = utf8_open(&ud, *cp)) == UTF8_MORE) { | |||
1113 | while (*++cp != '\0' && more == UTF8_MORE) | |||
1114 | more = utf8_append(&ud, *cp); | |||
1115 | if (more == UTF8_DONE) { | |||
1116 | if (width + ud.width <= limit) { | |||
1117 | memcpy(out, ud.data, ud.size); | |||
1118 | out += ud.size; | |||
1119 | } | |||
1120 | width += ud.width; | |||
1121 | } else { | |||
1122 | cp -= ud.have; | |||
1123 | cp++; | |||
1124 | } | |||
1125 | } else if (*cp > 0x1f && *cp < 0x7f) { | |||
1126 | if (width + 1 <= limit) | |||
1127 | *out++ = *cp; | |||
1128 | width++; | |||
1129 | cp++; | |||
1130 | } else | |||
1131 | cp++; | |||
1132 | } | |||
1133 | *out = '\0'; | |||
1134 | return (copy); | |||
1135 | } | |||
1136 | ||||
1137 | /* Trim on the right, taking #[] into account. */ | |||
1138 | char * | |||
1139 | format_trim_right(const char *expanded, u_int limit) | |||
1140 | { | |||
1141 | char *copy, *out; | |||
1142 | const char *cp = expanded, *end; | |||
1143 | u_int width = 0, total_width, skip, n; | |||
1144 | u_int leading_width, copy_width; | |||
| ||||
1145 | struct utf8_data ud; | |||
1146 | enum utf8_state more; | |||
1147 | ||||
1148 | total_width = format_width(expanded); | |||
1149 | if (total_width <= limit) | |||
1150 | return (xstrdup(expanded)); | |||
1151 | skip = total_width - limit; | |||
1152 | ||||
1153 | out = copy = xcalloc(1, strlen(expanded) + 1); | |||
1154 | while (*cp != '\0') { | |||
1155 | if (*cp == '#') { | |||
1156 | end = format_leading_hashes(cp, &n, &leading_width); | |||
1157 | if (width
| |||
1158 | if (skip - width >= leading_width) | |||
1159 | copy_width = 0; | |||
1160 | else | |||
1161 | copy_width -= (skip - width); | |||
| ||||
1162 | } else | |||
1163 | copy_width = leading_width; | |||
1164 | if (copy_width != 0) { | |||
1165 | if (n == 1) | |||
1166 | *out++ = '#'; | |||
1167 | else { | |||
1168 | memset(out, '#', 2 * copy_width); | |||
1169 | out += 2 * copy_width; | |||
1170 | } | |||
1171 | } | |||
1172 | width += leading_width; | |||
1173 | cp = end; | |||
1174 | if (*cp == '#') { | |||
1175 | end = format_skip(cp + 2, "]"); | |||
1176 | if (end == NULL((void *)0)) | |||
1177 | break; | |||
1178 | memcpy(out, cp, end + 1 - cp); | |||
1179 | out += (end + 1 - cp); | |||
1180 | cp = end + 1; | |||
1181 | } | |||
1182 | } else if ((more = utf8_open(&ud, *cp)) == UTF8_MORE) { | |||
1183 | while (*++cp != '\0' && more == UTF8_MORE) | |||
1184 | more = utf8_append(&ud, *cp); | |||
1185 | if (more == UTF8_DONE) { | |||
1186 | if (width >= skip) { | |||
1187 | memcpy(out, ud.data, ud.size); | |||
1188 | out += ud.size; | |||
1189 | } | |||
1190 | width += ud.width; | |||
1191 | } else { | |||
1192 | cp -= ud.have; | |||
1193 | cp++; | |||
1194 | } | |||
1195 | } else if (*cp > 0x1f && *cp < 0x7f) { | |||
1196 | if (width >= skip) | |||
1197 | *out++ = *cp; | |||
1198 | width++; | |||
1199 | cp++; | |||
1200 | } else | |||
1201 | cp++; | |||
1202 | } | |||
1203 | *out = '\0'; | |||
1204 | return (copy); | |||
1205 | } |