1 /* $OpenBSD: status.c,v 1.176 2018/02/22 11:42:41 nicm Exp $ */ 2 3 /* 4 * Copyright (c) 2007 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 #include <sys/time.h> 21 22 #include <errno.h> 23 #include <limits.h> 24 #include <stdarg.h> 25 #include <stdlib.h> 26 #include <string.h> 27 #include <time.h> 28 #include <unistd.h> 29 30 #include "tmux.h" 31 32 static char *status_redraw_get_left(struct client *, time_t, 33 struct grid_cell *, size_t *); 34 static char *status_redraw_get_right(struct client *, time_t, 35 struct grid_cell *, size_t *); 36 static char *status_print(struct client *, struct winlink *, time_t, 37 struct grid_cell *); 38 static char *status_replace(struct client *, struct winlink *, const char *, 39 time_t); 40 static void status_message_callback(int, short, void *); 41 static void status_timer_callback(int, short, void *); 42 43 static char *status_prompt_find_history_file(void); 44 static const char *status_prompt_up_history(u_int *); 45 static const char *status_prompt_down_history(u_int *); 46 static void status_prompt_add_history(const char *); 47 48 static const char **status_prompt_complete_list(u_int *, const char *); 49 static char *status_prompt_complete_prefix(const char **, u_int); 50 static char *status_prompt_complete(struct session *, const char *); 51 52 /* Status prompt history. */ 53 #define PROMPT_HISTORY 100 54 static char **status_prompt_hlist; 55 static u_int status_prompt_hsize; 56 57 /* Find the history file to load/save from/to. */ 58 static char * 59 status_prompt_find_history_file(void) 60 { 61 const char *home, *history_file; 62 char *path; 63 64 history_file = options_get_string(global_options, "history-file"); 65 if (*history_file == '\0') 66 return (NULL); 67 if (*history_file == '/') 68 return (xstrdup(history_file)); 69 70 if (history_file[0] != '~' || history_file[1] != '/') 71 return (NULL); 72 if ((home = find_home()) == NULL) 73 return (NULL); 74 xasprintf(&path, "%s%s", home, history_file + 1); 75 return (path); 76 } 77 78 /* Load status prompt history from file. */ 79 void 80 status_prompt_load_history(void) 81 { 82 FILE *f; 83 char *history_file, *line, *tmp; 84 size_t length; 85 86 if ((history_file = status_prompt_find_history_file()) == NULL) 87 return; 88 log_debug("loading history from %s", history_file); 89 90 f = fopen(history_file, "r"); 91 if (f == NULL) { 92 log_debug("%s: %s", history_file, strerror(errno)); 93 free(history_file); 94 return; 95 } 96 free(history_file); 97 98 for (;;) { 99 if ((line = fgetln(f, &length)) == NULL) 100 break; 101 102 if (length > 0) { 103 if (line[length - 1] == '\n') { 104 line[length - 1] = '\0'; 105 status_prompt_add_history(line); 106 } else { 107 tmp = xmalloc(length + 1); 108 memcpy(tmp, line, length); 109 tmp[length] = '\0'; 110 status_prompt_add_history(tmp); 111 free(tmp); 112 } 113 } 114 } 115 fclose(f); 116 } 117 118 /* Save status prompt history to file. */ 119 void 120 status_prompt_save_history(void) 121 { 122 FILE *f; 123 u_int i; 124 char *history_file; 125 126 if ((history_file = status_prompt_find_history_file()) == NULL) 127 return; 128 log_debug("saving history to %s", history_file); 129 130 f = fopen(history_file, "w"); 131 if (f == NULL) { 132 log_debug("%s: %s", history_file, strerror(errno)); 133 free(history_file); 134 return; 135 } 136 free(history_file); 137 138 for (i = 0; i < status_prompt_hsize; i++) { 139 fputs(status_prompt_hlist[i], f); 140 fputc('\n', f); 141 } 142 fclose(f); 143 144 } 145 146 /* Status timer callback. */ 147 static void 148 status_timer_callback(__unused int fd, __unused short events, void *arg) 149 { 150 struct client *c = arg; 151 struct session *s = c->session; 152 struct timeval tv; 153 154 evtimer_del(&c->status.timer); 155 156 if (s == NULL) 157 return; 158 159 if (c->message_string == NULL && c->prompt_string == NULL) 160 c->flags |= CLIENT_STATUS; 161 162 timerclear(&tv); 163 tv.tv_sec = options_get_number(s->options, "status-interval"); 164 165 if (tv.tv_sec != 0) 166 evtimer_add(&c->status.timer, &tv); 167 log_debug("client %p, status interval %d", c, (int)tv.tv_sec); 168 } 169 170 /* Start status timer for client. */ 171 void 172 status_timer_start(struct client *c) 173 { 174 struct session *s = c->session; 175 176 if (event_initialized(&c->status.timer)) 177 evtimer_del(&c->status.timer); 178 else 179 evtimer_set(&c->status.timer, status_timer_callback, c); 180 181 if (s != NULL && options_get_number(s->options, "status")) 182 status_timer_callback(-1, 0, c); 183 } 184 185 /* Start status timer for all clients. */ 186 void 187 status_timer_start_all(void) 188 { 189 struct client *c; 190 191 TAILQ_FOREACH(c, &clients, entry) 192 status_timer_start(c); 193 } 194 195 /* Update status cache. */ 196 void 197 status_update_saved(struct session *s) 198 { 199 if (!options_get_number(s->options, "status")) 200 s->statusat = -1; 201 else if (options_get_number(s->options, "status-position") == 0) 202 s->statusat = 0; 203 else 204 s->statusat = 1; 205 } 206 207 /* Get screen line of status line. -1 means off. */ 208 int 209 status_at_line(struct client *c) 210 { 211 struct session *s = c->session; 212 213 if (c->flags & CLIENT_STATUSOFF) 214 return (-1); 215 if (s->statusat != 1) 216 return (s->statusat); 217 return (c->tty.sy - status_line_size(s)); 218 } 219 220 /* 221 * Get size of status line for session. 0 means off. Note that status line may 222 * be forced off for an individual client if it is too small (the 223 * CLIENT_STATUSOFF flag is set for this). 224 */ 225 u_int 226 status_line_size(struct session *s) 227 { 228 if (s->statusat == -1) 229 return (0); 230 return (1); 231 } 232 233 /* Retrieve options for left string. */ 234 static char * 235 status_redraw_get_left(struct client *c, time_t t, struct grid_cell *gc, 236 size_t *size) 237 { 238 struct session *s = c->session; 239 const char *template; 240 char *left; 241 size_t leftlen; 242 243 style_apply_update(gc, s->options, "status-left-style"); 244 245 template = options_get_string(s->options, "status-left"); 246 left = status_replace(c, NULL, template, t); 247 248 *size = options_get_number(s->options, "status-left-length"); 249 leftlen = screen_write_cstrlen("%s", left); 250 if (leftlen < *size) 251 *size = leftlen; 252 return (left); 253 } 254 255 /* Retrieve options for right string. */ 256 static char * 257 status_redraw_get_right(struct client *c, time_t t, struct grid_cell *gc, 258 size_t *size) 259 { 260 struct session *s = c->session; 261 const char *template; 262 char *right; 263 size_t rightlen; 264 265 style_apply_update(gc, s->options, "status-right-style"); 266 267 template = options_get_string(s->options, "status-right"); 268 right = status_replace(c, NULL, template, t); 269 270 *size = options_get_number(s->options, "status-right-length"); 271 rightlen = screen_write_cstrlen("%s", right); 272 if (rightlen < *size) 273 *size = rightlen; 274 return (right); 275 } 276 277 /* Get window at window list position. */ 278 struct window * 279 status_get_window_at(struct client *c, u_int x) 280 { 281 struct session *s = c->session; 282 struct winlink *wl; 283 struct options *oo; 284 const char *sep; 285 size_t seplen; 286 287 x += c->wlmouse; 288 RB_FOREACH(wl, winlinks, &s->windows) { 289 oo = wl->window->options; 290 291 sep = options_get_string(oo, "window-status-separator"); 292 seplen = screen_write_cstrlen("%s", sep); 293 294 if (x < wl->status_width) 295 return (wl->window); 296 x -= wl->status_width + seplen; 297 } 298 return (NULL); 299 } 300 301 /* Draw status for client on the last lines of given context. */ 302 int 303 status_redraw(struct client *c) 304 { 305 struct screen_write_ctx ctx; 306 struct session *s = c->session; 307 struct winlink *wl; 308 struct screen old_status, window_list; 309 struct grid_cell stdgc, lgc, rgc, gc; 310 struct options *oo; 311 time_t t; 312 char *left, *right; 313 const char *sep; 314 u_int offset, needed, lines; 315 u_int wlstart, wlwidth, wlavailable, wloffset, wlsize; 316 size_t llen, rlen, seplen; 317 int larrow, rarrow; 318 319 /* Delete the saved status line, if any. */ 320 if (c->status.old_status != NULL) { 321 screen_free(c->status.old_status); 322 free(c->status.old_status); 323 c->status.old_status = NULL; 324 } 325 326 /* No status line? */ 327 lines = status_line_size(s); 328 if (c->tty.sy == 0 || lines == 0) 329 return (1); 330 left = right = NULL; 331 larrow = rarrow = 0; 332 333 /* Store current time. */ 334 t = time(NULL); 335 336 /* Set up default colour. */ 337 style_apply(&stdgc, s->options, "status-style"); 338 339 /* Create the target screen. */ 340 memcpy(&old_status, &c->status.status, sizeof old_status); 341 screen_init(&c->status.status, c->tty.sx, lines, 0); 342 screen_write_start(&ctx, NULL, &c->status.status); 343 for (offset = 0; offset < lines * c->tty.sx; offset++) 344 screen_write_putc(&ctx, &stdgc, ' '); 345 screen_write_stop(&ctx); 346 347 /* If the height is too small, blank status line. */ 348 if (c->tty.sy < lines) 349 goto out; 350 351 /* Work out left and right strings. */ 352 memcpy(&lgc, &stdgc, sizeof lgc); 353 left = status_redraw_get_left(c, t, &lgc, &llen); 354 memcpy(&rgc, &stdgc, sizeof rgc); 355 right = status_redraw_get_right(c, t, &rgc, &rlen); 356 357 /* 358 * Figure out how much space we have for the window list. If there 359 * isn't enough space, just show a blank status line. 360 */ 361 needed = 0; 362 if (llen != 0) 363 needed += llen; 364 if (rlen != 0) 365 needed += rlen; 366 if (c->tty.sx == 0 || c->tty.sx <= needed) 367 goto out; 368 wlavailable = c->tty.sx - needed; 369 370 /* Calculate the total size needed for the window list. */ 371 wlstart = wloffset = wlwidth = 0; 372 RB_FOREACH(wl, winlinks, &s->windows) { 373 free(wl->status_text); 374 memcpy(&wl->status_cell, &stdgc, sizeof wl->status_cell); 375 wl->status_text = status_print(c, wl, t, &wl->status_cell); 376 wl->status_width = screen_write_cstrlen("%s", wl->status_text); 377 378 if (wl == s->curw) 379 wloffset = wlwidth; 380 381 oo = wl->window->options; 382 sep = options_get_string(oo, "window-status-separator"); 383 seplen = screen_write_cstrlen("%s", sep); 384 wlwidth += wl->status_width + seplen; 385 } 386 387 /* Create a new screen for the window list. */ 388 screen_init(&window_list, wlwidth, 1, 0); 389 390 /* And draw the window list into it. */ 391 screen_write_start(&ctx, NULL, &window_list); 392 RB_FOREACH(wl, winlinks, &s->windows) { 393 screen_write_cnputs(&ctx, -1, &wl->status_cell, "%s", 394 wl->status_text); 395 396 oo = wl->window->options; 397 sep = options_get_string(oo, "window-status-separator"); 398 screen_write_cnputs(&ctx, -1, &stdgc, "%s", sep); 399 } 400 screen_write_stop(&ctx); 401 402 /* If there is enough space for the total width, skip to draw now. */ 403 if (wlwidth <= wlavailable) 404 goto draw; 405 406 /* Find size of current window text. */ 407 wlsize = s->curw->status_width; 408 409 /* 410 * If the current window is already on screen, good to draw from the 411 * start and just leave off the end. 412 */ 413 if (wloffset + wlsize < wlavailable) { 414 if (wlavailable > 0) { 415 rarrow = 1; 416 wlavailable--; 417 } 418 wlwidth = wlavailable; 419 } else { 420 /* 421 * Work out how many characters we need to omit from the 422 * start. There are wlavailable characters to fill, and 423 * wloffset + wlsize must be the last. So, the start character 424 * is wloffset + wlsize - wlavailable. 425 */ 426 if (wlavailable > 0) { 427 larrow = 1; 428 wlavailable--; 429 } 430 431 wlstart = wloffset + wlsize - wlavailable; 432 if (wlavailable > 0 && wlwidth > wlstart + wlavailable + 1) { 433 rarrow = 1; 434 wlstart++; 435 wlavailable--; 436 } 437 wlwidth = wlavailable; 438 } 439 440 /* Bail if anything is now too small too. */ 441 if (wlwidth == 0 || wlavailable == 0) { 442 screen_free(&window_list); 443 goto out; 444 } 445 446 /* 447 * Now the start position is known, work out the state of the left and 448 * right arrows. 449 */ 450 offset = 0; 451 RB_FOREACH(wl, winlinks, &s->windows) { 452 if (wl->flags & WINLINK_ALERTFLAGS && 453 larrow == 1 && offset < wlstart) 454 larrow = -1; 455 456 offset += wl->status_width; 457 458 if (wl->flags & WINLINK_ALERTFLAGS && 459 rarrow == 1 && offset > wlstart + wlwidth) 460 rarrow = -1; 461 } 462 463 draw: 464 /* Begin drawing. */ 465 screen_write_start(&ctx, NULL, &c->status.status); 466 467 /* Draw the left string and arrow. */ 468 screen_write_cursormove(&ctx, 0, 0); 469 if (llen != 0) 470 screen_write_cnputs(&ctx, llen, &lgc, "%s", left); 471 if (larrow != 0) { 472 memcpy(&gc, &stdgc, sizeof gc); 473 if (larrow == -1) 474 gc.attr ^= GRID_ATTR_REVERSE; 475 screen_write_putc(&ctx, &gc, '<'); 476 } 477 478 /* Draw the right string and arrow. */ 479 if (rarrow != 0) { 480 screen_write_cursormove(&ctx, c->tty.sx - rlen - 1, 0); 481 memcpy(&gc, &stdgc, sizeof gc); 482 if (rarrow == -1) 483 gc.attr ^= GRID_ATTR_REVERSE; 484 screen_write_putc(&ctx, &gc, '>'); 485 } else 486 screen_write_cursormove(&ctx, c->tty.sx - rlen, 0); 487 if (rlen != 0) 488 screen_write_cnputs(&ctx, rlen, &rgc, "%s", right); 489 490 /* Figure out the offset for the window list. */ 491 if (llen != 0) 492 wloffset = llen; 493 else 494 wloffset = 0; 495 if (wlwidth < wlavailable) { 496 switch (options_get_number(s->options, "status-justify")) { 497 case 1: /* centred */ 498 wloffset += (wlavailable - wlwidth) / 2; 499 break; 500 case 2: /* right */ 501 wloffset += (wlavailable - wlwidth); 502 break; 503 } 504 } 505 if (larrow != 0) 506 wloffset++; 507 508 /* Copy the window list. */ 509 c->wlmouse = -wloffset + wlstart; 510 screen_write_cursormove(&ctx, wloffset, 0); 511 screen_write_fast_copy(&ctx, &window_list, wlstart, 0, wlwidth, 1); 512 screen_free(&window_list); 513 514 screen_write_stop(&ctx); 515 516 out: 517 free(left); 518 free(right); 519 520 if (grid_compare(c->status.status.grid, old_status.grid) == 0) { 521 screen_free(&old_status); 522 return (0); 523 } 524 screen_free(&old_status); 525 return (1); 526 } 527 528 /* Replace special sequences in fmt. */ 529 static char * 530 status_replace(struct client *c, struct winlink *wl, const char *fmt, time_t t) 531 { 532 struct format_tree *ft; 533 char *expanded; 534 u_int tag; 535 536 if (fmt == NULL) 537 return (xstrdup("")); 538 539 if (wl != NULL) 540 tag = FORMAT_WINDOW|wl->window->id; 541 else 542 tag = FORMAT_NONE; 543 if (c->flags & CLIENT_STATUSFORCE) 544 ft = format_create(c, NULL, tag, FORMAT_STATUS|FORMAT_FORCE); 545 else 546 ft = format_create(c, NULL, tag, FORMAT_STATUS); 547 format_defaults(ft, c, NULL, wl, NULL); 548 549 expanded = format_expand_time(ft, fmt, t); 550 551 format_free(ft); 552 return (expanded); 553 } 554 555 /* Return winlink status line entry and adjust gc as necessary. */ 556 static char * 557 status_print(struct client *c, struct winlink *wl, time_t t, 558 struct grid_cell *gc) 559 { 560 struct options *oo = wl->window->options; 561 struct session *s = c->session; 562 const char *fmt; 563 char *text; 564 565 style_apply_update(gc, oo, "window-status-style"); 566 fmt = options_get_string(oo, "window-status-format"); 567 if (wl == s->curw) { 568 style_apply_update(gc, oo, "window-status-current-style"); 569 fmt = options_get_string(oo, "window-status-current-format"); 570 } 571 if (wl == TAILQ_FIRST(&s->lastw)) 572 style_apply_update(gc, oo, "window-status-last-style"); 573 574 if (wl->flags & WINLINK_BELL) 575 style_apply_update(gc, oo, "window-status-bell-style"); 576 else if (wl->flags & (WINLINK_ACTIVITY|WINLINK_SILENCE)) 577 style_apply_update(gc, oo, "window-status-activity-style"); 578 579 text = status_replace(c, wl, fmt, t); 580 return (text); 581 } 582 583 /* Set a status line message. */ 584 void 585 status_message_set(struct client *c, const char *fmt, ...) 586 { 587 struct timeval tv; 588 va_list ap; 589 int delay; 590 591 status_message_clear(c); 592 593 if (c->status.old_status == NULL) { 594 c->status.old_status = xmalloc(sizeof *c->status.old_status); 595 memcpy(c->status.old_status, &c->status.status, 596 sizeof *c->status.old_status); 597 screen_init(&c->status.status, c->tty.sx, 1, 0); 598 } 599 600 va_start(ap, fmt); 601 xvasprintf(&c->message_string, fmt, ap); 602 va_end(ap); 603 604 server_client_add_message(c, "%s", c->message_string); 605 606 delay = options_get_number(c->session->options, "display-time"); 607 if (delay > 0) { 608 tv.tv_sec = delay / 1000; 609 tv.tv_usec = (delay % 1000) * 1000L; 610 611 if (event_initialized(&c->message_timer)) 612 evtimer_del(&c->message_timer); 613 evtimer_set(&c->message_timer, status_message_callback, c); 614 evtimer_add(&c->message_timer, &tv); 615 } 616 617 c->tty.flags |= (TTY_NOCURSOR|TTY_FREEZE); 618 c->flags |= CLIENT_STATUS; 619 } 620 621 /* Clear status line message. */ 622 void 623 status_message_clear(struct client *c) 624 { 625 if (c->message_string == NULL) 626 return; 627 628 free(c->message_string); 629 c->message_string = NULL; 630 631 if (c->prompt_string == NULL) 632 c->tty.flags &= ~(TTY_NOCURSOR|TTY_FREEZE); 633 c->flags |= CLIENT_REDRAW; /* screen was frozen and may have changed */ 634 635 screen_reinit(&c->status.status); 636 } 637 638 /* Clear status line message after timer expires. */ 639 static void 640 status_message_callback(__unused int fd, __unused short event, void *data) 641 { 642 struct client *c = data; 643 644 status_message_clear(c); 645 } 646 647 /* Draw client message on status line of present else on last line. */ 648 int 649 status_message_redraw(struct client *c) 650 { 651 struct screen_write_ctx ctx; 652 struct session *s = c->session; 653 struct screen old_status; 654 size_t len; 655 struct grid_cell gc; 656 u_int lines, offset; 657 658 if (c->tty.sx == 0 || c->tty.sy == 0) 659 return (0); 660 memcpy(&old_status, &c->status.status, sizeof old_status); 661 662 lines = status_line_size(c->session); 663 if (lines <= 1) { 664 lines = 1; 665 screen_init(&c->status.status, c->tty.sx, 1, 0); 666 } else 667 screen_init(&c->status.status, c->tty.sx, lines, 0); 668 669 len = screen_write_strlen("%s", c->message_string); 670 if (len > c->tty.sx) 671 len = c->tty.sx; 672 673 style_apply(&gc, s->options, "message-style"); 674 675 screen_write_start(&ctx, NULL, &c->status.status); 676 screen_write_cursormove(&ctx, 0, 0); 677 for (offset = 0; offset < lines * c->tty.sx; offset++) 678 screen_write_putc(&ctx, &gc, ' '); 679 screen_write_cursormove(&ctx, 0, lines - 1); 680 screen_write_nputs(&ctx, len, &gc, "%s", c->message_string); 681 screen_write_stop(&ctx); 682 683 if (grid_compare(c->status.status.grid, old_status.grid) == 0) { 684 screen_free(&old_status); 685 return (0); 686 } 687 screen_free(&old_status); 688 return (1); 689 } 690 691 /* Enable status line prompt. */ 692 void 693 status_prompt_set(struct client *c, const char *msg, const char *input, 694 prompt_input_cb inputcb, prompt_free_cb freecb, void *data, int flags) 695 { 696 struct format_tree *ft; 697 time_t t; 698 char *tmp, *cp; 699 700 ft = format_create(c, NULL, FORMAT_NONE, 0); 701 format_defaults(ft, c, NULL, NULL, NULL); 702 t = time(NULL); 703 704 if (input == NULL) 705 input = ""; 706 if (flags & PROMPT_NOFORMAT) 707 tmp = xstrdup(input); 708 else 709 tmp = format_expand_time(ft, input, t); 710 711 status_message_clear(c); 712 status_prompt_clear(c); 713 714 if (c->status.old_status == NULL) { 715 c->status.old_status = xmalloc(sizeof *c->status.old_status); 716 memcpy(c->status.old_status, &c->status.status, 717 sizeof *c->status.old_status); 718 screen_init(&c->status.status, c->tty.sx, 1, 0); 719 } 720 721 c->prompt_string = format_expand_time(ft, msg, t); 722 723 c->prompt_buffer = utf8_fromcstr(tmp); 724 c->prompt_index = utf8_strlen(c->prompt_buffer); 725 726 c->prompt_inputcb = inputcb; 727 c->prompt_freecb = freecb; 728 c->prompt_data = data; 729 730 c->prompt_hindex = 0; 731 732 c->prompt_flags = flags; 733 c->prompt_mode = PROMPT_ENTRY; 734 735 if (~flags & PROMPT_INCREMENTAL) 736 c->tty.flags |= (TTY_NOCURSOR|TTY_FREEZE); 737 c->flags |= CLIENT_STATUS; 738 739 if ((flags & PROMPT_INCREMENTAL) && *tmp != '\0') { 740 xasprintf(&cp, "=%s", tmp); 741 c->prompt_inputcb(c, c->prompt_data, cp, 0); 742 free(cp); 743 } 744 745 free(tmp); 746 format_free(ft); 747 } 748 749 /* Remove status line prompt. */ 750 void 751 status_prompt_clear(struct client *c) 752 { 753 if (c->prompt_string == NULL) 754 return; 755 756 if (c->prompt_freecb != NULL && c->prompt_data != NULL) 757 c->prompt_freecb(c->prompt_data); 758 759 free(c->prompt_string); 760 c->prompt_string = NULL; 761 762 free(c->prompt_buffer); 763 c->prompt_buffer = NULL; 764 765 c->tty.flags &= ~(TTY_NOCURSOR|TTY_FREEZE); 766 c->flags |= CLIENT_REDRAW; /* screen was frozen and may have changed */ 767 768 screen_reinit(&c->status.status); 769 } 770 771 /* Update status line prompt with a new prompt string. */ 772 void 773 status_prompt_update(struct client *c, const char *msg, const char *input) 774 { 775 struct format_tree *ft; 776 time_t t; 777 char *tmp; 778 779 ft = format_create(c, NULL, FORMAT_NONE, 0); 780 format_defaults(ft, c, NULL, NULL, NULL); 781 782 t = time(NULL); 783 tmp = format_expand_time(ft, input, t); 784 785 free(c->prompt_string); 786 c->prompt_string = format_expand_time(ft, msg, t); 787 788 free(c->prompt_buffer); 789 c->prompt_buffer = utf8_fromcstr(tmp); 790 c->prompt_index = utf8_strlen(c->prompt_buffer); 791 792 c->prompt_hindex = 0; 793 794 c->flags |= CLIENT_STATUS; 795 796 free(tmp); 797 format_free(ft); 798 } 799 800 /* Draw client prompt on status line of present else on last line. */ 801 int 802 status_prompt_redraw(struct client *c) 803 { 804 struct screen_write_ctx ctx; 805 struct session *s = c->session; 806 struct screen old_status; 807 u_int i, offset, left, start, pcursor, pwidth, width; 808 u_int lines; 809 struct grid_cell gc, cursorgc; 810 811 if (c->tty.sx == 0 || c->tty.sy == 0) 812 return (0); 813 memcpy(&old_status, &c->status.status, sizeof old_status); 814 815 lines = status_line_size(c->session); 816 if (lines <= 1) { 817 lines = 1; 818 screen_init(&c->status.status, c->tty.sx, 1, 0); 819 } else 820 screen_init(&c->status.status, c->tty.sx, lines, 0); 821 822 if (c->prompt_mode == PROMPT_COMMAND) 823 style_apply(&gc, s->options, "message-command-style"); 824 else 825 style_apply(&gc, s->options, "message-style"); 826 827 memcpy(&cursorgc, &gc, sizeof cursorgc); 828 cursorgc.attr ^= GRID_ATTR_REVERSE; 829 830 start = screen_write_strlen("%s", c->prompt_string); 831 if (start > c->tty.sx) 832 start = c->tty.sx; 833 834 screen_write_start(&ctx, NULL, &c->status.status); 835 screen_write_cursormove(&ctx, 0, 0); 836 for (offset = 0; offset < lines * c->tty.sx; offset++) 837 screen_write_putc(&ctx, &gc, ' '); 838 screen_write_cursormove(&ctx, 0, 0); 839 screen_write_nputs(&ctx, start, &gc, "%s", c->prompt_string); 840 screen_write_cursormove(&ctx, start, 0); 841 842 left = c->tty.sx - start; 843 if (left == 0) 844 goto finished; 845 846 pcursor = utf8_strwidth(c->prompt_buffer, c->prompt_index); 847 pwidth = utf8_strwidth(c->prompt_buffer, -1); 848 if (pcursor >= left) { 849 /* 850 * The cursor would be outside the screen so start drawing 851 * with it on the right. 852 */ 853 offset = (pcursor - left) + 1; 854 pwidth = left; 855 } else 856 offset = 0; 857 if (pwidth > left) 858 pwidth = left; 859 860 width = 0; 861 for (i = 0; c->prompt_buffer[i].size != 0; i++) { 862 if (width < offset) { 863 width += c->prompt_buffer[i].width; 864 continue; 865 } 866 if (width >= offset + pwidth) 867 break; 868 width += c->prompt_buffer[i].width; 869 if (width > offset + pwidth) 870 break; 871 872 if (i != c->prompt_index) { 873 utf8_copy(&gc.data, &c->prompt_buffer[i]); 874 screen_write_cell(&ctx, &gc); 875 } else { 876 utf8_copy(&cursorgc.data, &c->prompt_buffer[i]); 877 screen_write_cell(&ctx, &cursorgc); 878 } 879 } 880 if (c->status.status.cx < screen_size_x(&c->status.status) && 881 c->prompt_index >= i) 882 screen_write_putc(&ctx, &cursorgc, ' '); 883 884 finished: 885 screen_write_stop(&ctx); 886 887 if (grid_compare(c->status.status.grid, old_status.grid) == 0) { 888 screen_free(&old_status); 889 return (0); 890 } 891 screen_free(&old_status); 892 return (1); 893 } 894 895 /* Is this a separator? */ 896 static int 897 status_prompt_in_list(const char *ws, const struct utf8_data *ud) 898 { 899 if (ud->size != 1 || ud->width != 1) 900 return (0); 901 return (strchr(ws, *ud->data) != NULL); 902 } 903 904 /* Is this a space? */ 905 static int 906 status_prompt_space(const struct utf8_data *ud) 907 { 908 if (ud->size != 1 || ud->width != 1) 909 return (0); 910 return (*ud->data == ' '); 911 } 912 913 /* 914 * Translate key from emacs to vi. Return 0 to drop key, 1 to process the key 915 * as an emacs key; return 2 to append to the buffer. 916 */ 917 static int 918 status_prompt_translate_key(struct client *c, key_code key, key_code *new_key) 919 { 920 if (c->prompt_mode == PROMPT_ENTRY) { 921 switch (key) { 922 case '\003': /* C-c */ 923 case '\010': /* C-h */ 924 case '\011': /* Tab */ 925 case '\025': /* C-u */ 926 case '\027': /* C-w */ 927 case '\n': 928 case '\r': 929 case KEYC_BSPACE: 930 case KEYC_DC: 931 case KEYC_DOWN: 932 case KEYC_END: 933 case KEYC_HOME: 934 case KEYC_LEFT: 935 case KEYC_RIGHT: 936 case KEYC_UP: 937 *new_key = key; 938 return (1); 939 case '\033': /* Escape */ 940 c->prompt_mode = PROMPT_COMMAND; 941 c->flags |= CLIENT_STATUS; 942 return (0); 943 } 944 *new_key = key; 945 return (2); 946 } 947 948 switch (key) { 949 case 'A': 950 case 'I': 951 case 'C': 952 case 's': 953 case 'a': 954 c->prompt_mode = PROMPT_ENTRY; 955 c->flags |= CLIENT_STATUS; 956 break; /* switch mode and... */ 957 case 'S': 958 c->prompt_mode = PROMPT_ENTRY; 959 c->flags |= CLIENT_STATUS; 960 *new_key = '\025'; /* C-u */ 961 return (1); 962 case 'i': 963 case '\033': /* Escape */ 964 c->prompt_mode = PROMPT_ENTRY; 965 c->flags |= CLIENT_STATUS; 966 return (0); 967 } 968 969 switch (key) { 970 case 'A': 971 case '$': 972 *new_key = KEYC_END; 973 return (1); 974 case 'I': 975 case '0': 976 case '^': 977 *new_key = KEYC_HOME; 978 return (1); 979 case 'C': 980 case 'D': 981 *new_key = '\013'; /* C-k */ 982 return (1); 983 case KEYC_BSPACE: 984 case 'X': 985 *new_key = KEYC_BSPACE; 986 return (1); 987 case 'b': 988 case 'B': 989 *new_key = 'b'|KEYC_ESCAPE; 990 return (1); 991 case 'd': 992 *new_key = '\025'; 993 return (1); 994 case 'e': 995 case 'E': 996 case 'w': 997 case 'W': 998 *new_key = 'f'|KEYC_ESCAPE; 999 return (1); 1000 case 'p': 1001 *new_key = '\031'; /* C-y */ 1002 return (1); 1003 case 's': 1004 case KEYC_DC: 1005 case 'x': 1006 *new_key = KEYC_DC; 1007 return (1); 1008 case KEYC_DOWN: 1009 case 'j': 1010 *new_key = KEYC_DOWN; 1011 return (1); 1012 case KEYC_LEFT: 1013 case 'h': 1014 *new_key = KEYC_LEFT; 1015 return (1); 1016 case 'a': 1017 case KEYC_RIGHT: 1018 case 'l': 1019 *new_key = KEYC_RIGHT; 1020 return (1); 1021 case KEYC_UP: 1022 case 'k': 1023 *new_key = KEYC_UP; 1024 return (1); 1025 case '\010' /* C-h */: 1026 case '\003' /* C-c */: 1027 case '\n': 1028 case '\r': 1029 return (1); 1030 } 1031 return (0); 1032 } 1033 1034 /* Handle keys in prompt. */ 1035 int 1036 status_prompt_key(struct client *c, key_code key) 1037 { 1038 struct options *oo = c->session->options; 1039 struct paste_buffer *pb; 1040 char *s, *cp, word[64], prefix = '='; 1041 const char *histstr, *bufdata, *ws = NULL; 1042 u_char ch; 1043 size_t size, n, off, idx, bufsize, used; 1044 struct utf8_data tmp, *first, *last, *ud; 1045 int keys; 1046 1047 size = utf8_strlen(c->prompt_buffer); 1048 1049 if (c->prompt_flags & PROMPT_NUMERIC) { 1050 if (key >= '0' && key <= '9') 1051 goto append_key; 1052 s = utf8_tocstr(c->prompt_buffer); 1053 c->prompt_inputcb(c, c->prompt_data, s, 1); 1054 status_prompt_clear(c); 1055 free(s); 1056 return (1); 1057 } 1058 1059 keys = options_get_number(c->session->options, "status-keys"); 1060 if (keys == MODEKEY_VI) { 1061 switch (status_prompt_translate_key(c, key, &key)) { 1062 case 1: 1063 goto process_key; 1064 case 2: 1065 goto append_key; 1066 default: 1067 return (0); 1068 } 1069 } 1070 1071 process_key: 1072 switch (key) { 1073 case KEYC_LEFT: 1074 case '\002': /* C-b */ 1075 if (c->prompt_index > 0) { 1076 c->prompt_index--; 1077 break; 1078 } 1079 break; 1080 case KEYC_RIGHT: 1081 case '\006': /* C-f */ 1082 if (c->prompt_index < size) { 1083 c->prompt_index++; 1084 break; 1085 } 1086 break; 1087 case KEYC_HOME: 1088 case '\001': /* C-a */ 1089 if (c->prompt_index != 0) { 1090 c->prompt_index = 0; 1091 break; 1092 } 1093 break; 1094 case KEYC_END: 1095 case '\005': /* C-e */ 1096 if (c->prompt_index != size) { 1097 c->prompt_index = size; 1098 break; 1099 } 1100 break; 1101 case '\011': /* Tab */ 1102 if (c->prompt_buffer[0].size == 0) 1103 break; 1104 1105 idx = c->prompt_index; 1106 if (idx != 0) 1107 idx--; 1108 1109 /* Find the word we are in. */ 1110 first = &c->prompt_buffer[idx]; 1111 while (first > c->prompt_buffer && !status_prompt_space(first)) 1112 first--; 1113 while (first->size != 0 && status_prompt_space(first)) 1114 first++; 1115 last = &c->prompt_buffer[idx]; 1116 while (last->size != 0 && !status_prompt_space(last)) 1117 last++; 1118 while (last > c->prompt_buffer && status_prompt_space(last)) 1119 last--; 1120 if (last->size != 0) 1121 last++; 1122 if (last <= first) 1123 break; 1124 1125 used = 0; 1126 for (ud = first; ud < last; ud++) { 1127 if (used + ud->size >= sizeof word) 1128 break; 1129 memcpy(word + used, ud->data, ud->size); 1130 used += ud->size; 1131 } 1132 if (ud != last) 1133 break; 1134 word[used] = '\0'; 1135 1136 /* And try to complete it. */ 1137 if ((s = status_prompt_complete(c->session, word)) == NULL) 1138 break; 1139 1140 /* Trim out word. */ 1141 n = size - (last - c->prompt_buffer) + 1; /* with \0 */ 1142 memmove(first, last, n * sizeof *c->prompt_buffer); 1143 size -= last - first; 1144 1145 /* Insert the new word. */ 1146 size += strlen(s); 1147 off = first - c->prompt_buffer; 1148 c->prompt_buffer = xreallocarray(c->prompt_buffer, size + 1, 1149 sizeof *c->prompt_buffer); 1150 first = c->prompt_buffer + off; 1151 memmove(first + strlen(s), first, n * sizeof *c->prompt_buffer); 1152 for (idx = 0; idx < strlen(s); idx++) 1153 utf8_set(&first[idx], s[idx]); 1154 1155 c->prompt_index = (first - c->prompt_buffer) + strlen(s); 1156 free(s); 1157 1158 goto changed; 1159 case KEYC_BSPACE: 1160 case '\010': /* C-h */ 1161 if (c->prompt_index != 0) { 1162 if (c->prompt_index == size) 1163 c->prompt_buffer[--c->prompt_index].size = 0; 1164 else { 1165 memmove(c->prompt_buffer + c->prompt_index - 1, 1166 c->prompt_buffer + c->prompt_index, 1167 (size + 1 - c->prompt_index) * 1168 sizeof *c->prompt_buffer); 1169 c->prompt_index--; 1170 } 1171 goto changed; 1172 } 1173 break; 1174 case KEYC_DC: 1175 case '\004': /* C-d */ 1176 if (c->prompt_index != size) { 1177 memmove(c->prompt_buffer + c->prompt_index, 1178 c->prompt_buffer + c->prompt_index + 1, 1179 (size + 1 - c->prompt_index) * 1180 sizeof *c->prompt_buffer); 1181 goto changed; 1182 } 1183 break; 1184 case '\025': /* C-u */ 1185 c->prompt_buffer[0].size = 0; 1186 c->prompt_index = 0; 1187 goto changed; 1188 case '\013': /* C-k */ 1189 if (c->prompt_index < size) { 1190 c->prompt_buffer[c->prompt_index].size = 0; 1191 goto changed; 1192 } 1193 break; 1194 case '\027': /* C-w */ 1195 ws = options_get_string(oo, "word-separators"); 1196 idx = c->prompt_index; 1197 1198 /* Find a non-separator. */ 1199 while (idx != 0) { 1200 idx--; 1201 if (!status_prompt_in_list(ws, &c->prompt_buffer[idx])) 1202 break; 1203 } 1204 1205 /* Find the separator at the beginning of the word. */ 1206 while (idx != 0) { 1207 idx--; 1208 if (status_prompt_in_list(ws, &c->prompt_buffer[idx])) { 1209 /* Go back to the word. */ 1210 idx++; 1211 break; 1212 } 1213 } 1214 1215 memmove(c->prompt_buffer + idx, 1216 c->prompt_buffer + c->prompt_index, 1217 (size + 1 - c->prompt_index) * 1218 sizeof *c->prompt_buffer); 1219 memset(c->prompt_buffer + size - (c->prompt_index - idx), 1220 '\0', (c->prompt_index - idx) * sizeof *c->prompt_buffer); 1221 c->prompt_index = idx; 1222 1223 goto changed; 1224 case 'f'|KEYC_ESCAPE: 1225 ws = options_get_string(oo, "word-separators"); 1226 1227 /* Find a word. */ 1228 while (c->prompt_index != size) { 1229 idx = ++c->prompt_index; 1230 if (!status_prompt_in_list(ws, &c->prompt_buffer[idx])) 1231 break; 1232 } 1233 1234 /* Find the separator at the end of the word. */ 1235 while (c->prompt_index != size) { 1236 idx = ++c->prompt_index; 1237 if (status_prompt_in_list(ws, &c->prompt_buffer[idx])) 1238 break; 1239 } 1240 1241 /* Back up to the end-of-word like vi. */ 1242 if (options_get_number(oo, "status-keys") == MODEKEY_VI && 1243 c->prompt_index != 0) 1244 c->prompt_index--; 1245 1246 goto changed; 1247 case 'b'|KEYC_ESCAPE: 1248 ws = options_get_string(oo, "word-separators"); 1249 1250 /* Find a non-separator. */ 1251 while (c->prompt_index != 0) { 1252 idx = --c->prompt_index; 1253 if (!status_prompt_in_list(ws, &c->prompt_buffer[idx])) 1254 break; 1255 } 1256 1257 /* Find the separator at the beginning of the word. */ 1258 while (c->prompt_index != 0) { 1259 idx = --c->prompt_index; 1260 if (status_prompt_in_list(ws, &c->prompt_buffer[idx])) { 1261 /* Go back to the word. */ 1262 c->prompt_index++; 1263 break; 1264 } 1265 } 1266 goto changed; 1267 case KEYC_UP: 1268 case '\020': /* C-p */ 1269 histstr = status_prompt_up_history(&c->prompt_hindex); 1270 if (histstr == NULL) 1271 break; 1272 free(c->prompt_buffer); 1273 c->prompt_buffer = utf8_fromcstr(histstr); 1274 c->prompt_index = utf8_strlen(c->prompt_buffer); 1275 goto changed; 1276 case KEYC_DOWN: 1277 case '\016': /* C-n */ 1278 histstr = status_prompt_down_history(&c->prompt_hindex); 1279 if (histstr == NULL) 1280 break; 1281 free(c->prompt_buffer); 1282 c->prompt_buffer = utf8_fromcstr(histstr); 1283 c->prompt_index = utf8_strlen(c->prompt_buffer); 1284 goto changed; 1285 case '\031': /* C-y */ 1286 if ((pb = paste_get_top(NULL)) == NULL) 1287 break; 1288 bufdata = paste_buffer_data(pb, &bufsize); 1289 for (n = 0; n < bufsize; n++) { 1290 ch = (u_char)bufdata[n]; 1291 if (ch < 32 || ch >= 127) 1292 break; 1293 } 1294 1295 c->prompt_buffer = xreallocarray(c->prompt_buffer, size + n + 1, 1296 sizeof *c->prompt_buffer); 1297 if (c->prompt_index == size) { 1298 for (idx = 0; idx < n; idx++) { 1299 ud = &c->prompt_buffer[c->prompt_index + idx]; 1300 utf8_set(ud, bufdata[idx]); 1301 } 1302 c->prompt_index += n; 1303 c->prompt_buffer[c->prompt_index].size = 0; 1304 } else { 1305 memmove(c->prompt_buffer + c->prompt_index + n, 1306 c->prompt_buffer + c->prompt_index, 1307 (size + 1 - c->prompt_index) * 1308 sizeof *c->prompt_buffer); 1309 for (idx = 0; idx < n; idx++) { 1310 ud = &c->prompt_buffer[c->prompt_index + idx]; 1311 utf8_set(ud, bufdata[idx]); 1312 } 1313 c->prompt_index += n; 1314 } 1315 goto changed; 1316 case '\024': /* C-t */ 1317 idx = c->prompt_index; 1318 if (idx < size) 1319 idx++; 1320 if (idx >= 2) { 1321 utf8_copy(&tmp, &c->prompt_buffer[idx - 2]); 1322 utf8_copy(&c->prompt_buffer[idx - 2], 1323 &c->prompt_buffer[idx - 1]); 1324 utf8_copy(&c->prompt_buffer[idx - 1], &tmp); 1325 c->prompt_index = idx; 1326 goto changed; 1327 } 1328 break; 1329 case '\r': 1330 case '\n': 1331 s = utf8_tocstr(c->prompt_buffer); 1332 if (*s != '\0') 1333 status_prompt_add_history(s); 1334 if (c->prompt_inputcb(c, c->prompt_data, s, 1) == 0) 1335 status_prompt_clear(c); 1336 free(s); 1337 break; 1338 case '\033': /* Escape */ 1339 case '\003': /* C-c */ 1340 case '\007': /* C-g */ 1341 if (c->prompt_inputcb(c, c->prompt_data, NULL, 1) == 0) 1342 status_prompt_clear(c); 1343 break; 1344 case '\022': /* C-r */ 1345 if (c->prompt_flags & PROMPT_INCREMENTAL) { 1346 prefix = '-'; 1347 goto changed; 1348 } 1349 break; 1350 case '\023': /* C-s */ 1351 if (c->prompt_flags & PROMPT_INCREMENTAL) { 1352 prefix = '+'; 1353 goto changed; 1354 } 1355 break; 1356 default: 1357 goto append_key; 1358 } 1359 1360 c->flags |= CLIENT_STATUS; 1361 return (0); 1362 1363 append_key: 1364 if (key <= 0x1f || key >= KEYC_BASE) 1365 return (0); 1366 if (utf8_split(key, &tmp) != UTF8_DONE) 1367 return (0); 1368 1369 c->prompt_buffer = xreallocarray(c->prompt_buffer, size + 2, 1370 sizeof *c->prompt_buffer); 1371 1372 if (c->prompt_index == size) { 1373 utf8_copy(&c->prompt_buffer[c->prompt_index], &tmp); 1374 c->prompt_index++; 1375 c->prompt_buffer[c->prompt_index].size = 0; 1376 } else { 1377 memmove(c->prompt_buffer + c->prompt_index + 1, 1378 c->prompt_buffer + c->prompt_index, 1379 (size + 1 - c->prompt_index) * 1380 sizeof *c->prompt_buffer); 1381 utf8_copy(&c->prompt_buffer[c->prompt_index], &tmp); 1382 c->prompt_index++; 1383 } 1384 1385 if (c->prompt_flags & PROMPT_SINGLE) { 1386 s = utf8_tocstr(c->prompt_buffer); 1387 if (strlen(s) != 1) 1388 status_prompt_clear(c); 1389 else if (c->prompt_inputcb(c, c->prompt_data, s, 1) == 0) 1390 status_prompt_clear(c); 1391 free(s); 1392 } 1393 1394 changed: 1395 c->flags |= CLIENT_STATUS; 1396 if (c->prompt_flags & PROMPT_INCREMENTAL) { 1397 s = utf8_tocstr(c->prompt_buffer); 1398 xasprintf(&cp, "%c%s", prefix, s); 1399 c->prompt_inputcb(c, c->prompt_data, cp, 0); 1400 free(cp); 1401 free(s); 1402 } 1403 return (0); 1404 } 1405 1406 /* Get previous line from the history. */ 1407 static const char * 1408 status_prompt_up_history(u_int *idx) 1409 { 1410 /* 1411 * History runs from 0 to size - 1. Index is from 0 to size. Zero is 1412 * empty. 1413 */ 1414 1415 if (status_prompt_hsize == 0 || *idx == status_prompt_hsize) 1416 return (NULL); 1417 (*idx)++; 1418 return (status_prompt_hlist[status_prompt_hsize - *idx]); 1419 } 1420 1421 /* Get next line from the history. */ 1422 static const char * 1423 status_prompt_down_history(u_int *idx) 1424 { 1425 if (status_prompt_hsize == 0 || *idx == 0) 1426 return (""); 1427 (*idx)--; 1428 if (*idx == 0) 1429 return (""); 1430 return (status_prompt_hlist[status_prompt_hsize - *idx]); 1431 } 1432 1433 /* Add line to the history. */ 1434 static void 1435 status_prompt_add_history(const char *line) 1436 { 1437 size_t size; 1438 1439 if (status_prompt_hsize > 0 && 1440 strcmp(status_prompt_hlist[status_prompt_hsize - 1], line) == 0) 1441 return; 1442 1443 if (status_prompt_hsize == PROMPT_HISTORY) { 1444 free(status_prompt_hlist[0]); 1445 1446 size = (PROMPT_HISTORY - 1) * sizeof *status_prompt_hlist; 1447 memmove(&status_prompt_hlist[0], &status_prompt_hlist[1], size); 1448 1449 status_prompt_hlist[status_prompt_hsize - 1] = xstrdup(line); 1450 return; 1451 } 1452 1453 status_prompt_hlist = xreallocarray(status_prompt_hlist, 1454 status_prompt_hsize + 1, sizeof *status_prompt_hlist); 1455 status_prompt_hlist[status_prompt_hsize++] = xstrdup(line); 1456 } 1457 1458 /* Build completion list. */ 1459 static const char ** 1460 status_prompt_complete_list(u_int *size, const char *s) 1461 { 1462 const char **list = NULL, **layout; 1463 const struct cmd_entry **cmdent; 1464 const struct options_table_entry *oe; 1465 const char *layouts[] = { 1466 "even-horizontal", "even-vertical", "main-horizontal", 1467 "main-vertical", "tiled", NULL 1468 }; 1469 1470 *size = 0; 1471 for (cmdent = cmd_table; *cmdent != NULL; cmdent++) { 1472 if (strncmp((*cmdent)->name, s, strlen(s)) == 0) { 1473 list = xreallocarray(list, (*size) + 1, sizeof *list); 1474 list[(*size)++] = (*cmdent)->name; 1475 } 1476 } 1477 for (oe = options_table; oe->name != NULL; oe++) { 1478 if (strncmp(oe->name, s, strlen(s)) == 0) { 1479 list = xreallocarray(list, (*size) + 1, sizeof *list); 1480 list[(*size)++] = oe->name; 1481 } 1482 } 1483 for (layout = layouts; *layout != NULL; layout++) { 1484 if (strncmp(*layout, s, strlen(s)) == 0) { 1485 list = xreallocarray(list, (*size) + 1, sizeof *list); 1486 list[(*size)++] = *layout; 1487 } 1488 } 1489 return (list); 1490 } 1491 1492 /* Find longest prefix. */ 1493 static char * 1494 status_prompt_complete_prefix(const char **list, u_int size) 1495 { 1496 char *out; 1497 u_int i; 1498 size_t j; 1499 1500 out = xstrdup(list[0]); 1501 for (i = 1; i < size; i++) { 1502 j = strlen(list[i]); 1503 if (j > strlen(out)) 1504 j = strlen(out); 1505 for (; j > 0; j--) { 1506 if (out[j - 1] != list[i][j - 1]) 1507 out[j - 1] = '\0'; 1508 } 1509 } 1510 return (out); 1511 } 1512 1513 /* Complete word. */ 1514 static char * 1515 status_prompt_complete(struct session *session, const char *s) 1516 { 1517 const char **list = NULL, *colon; 1518 u_int size = 0, i; 1519 struct session *s_loop; 1520 struct winlink *wl; 1521 struct window *w; 1522 char *copy, *out, *tmp; 1523 1524 if (*s == '\0') 1525 return (NULL); 1526 out = NULL; 1527 1528 if (strncmp(s, "-t", 2) != 0 && strncmp(s, "-s", 2) != 0) { 1529 list = status_prompt_complete_list(&size, s); 1530 if (size == 0) 1531 out = NULL; 1532 else if (size == 1) 1533 xasprintf(&out, "%s ", list[0]); 1534 else 1535 out = status_prompt_complete_prefix(list, size); 1536 free(list); 1537 return (out); 1538 } 1539 copy = xstrdup(s); 1540 1541 colon = ":"; 1542 if (copy[strlen(copy) - 1] == ':') 1543 copy[strlen(copy) - 1] = '\0'; 1544 else 1545 colon = ""; 1546 s = copy + 2; 1547 1548 RB_FOREACH(s_loop, sessions, &sessions) { 1549 if (strncmp(s_loop->name, s, strlen(s)) == 0) { 1550 list = xreallocarray(list, size + 2, sizeof *list); 1551 list[size++] = s_loop->name; 1552 } 1553 } 1554 if (size == 1) { 1555 out = xstrdup(list[0]); 1556 if (session_find(list[0]) != NULL) 1557 colon = ":"; 1558 } else if (size != 0) 1559 out = status_prompt_complete_prefix(list, size); 1560 if (out != NULL) { 1561 xasprintf(&tmp, "-%c%s%s", copy[1], out, colon); 1562 free(out); 1563 out = tmp; 1564 goto found; 1565 } 1566 1567 colon = ""; 1568 if (*s == ':') { 1569 RB_FOREACH(wl, winlinks, &session->windows) { 1570 xasprintf(&tmp, ":%s", wl->window->name); 1571 if (strncmp(tmp, s, strlen(s)) == 0){ 1572 list = xreallocarray(list, size + 1, 1573 sizeof *list); 1574 list[size++] = tmp; 1575 continue; 1576 } 1577 free(tmp); 1578 1579 xasprintf(&tmp, ":%d", wl->idx); 1580 if (strncmp(tmp, s, strlen(s)) == 0) { 1581 list = xreallocarray(list, size + 1, 1582 sizeof *list); 1583 list[size++] = tmp; 1584 continue; 1585 } 1586 free(tmp); 1587 } 1588 } else { 1589 RB_FOREACH(s_loop, sessions, &sessions) { 1590 RB_FOREACH(wl, winlinks, &s_loop->windows) { 1591 w = wl->window; 1592 1593 xasprintf(&tmp, "%s:%s", s_loop->name, w->name); 1594 if (strncmp(tmp, s, strlen(s)) == 0) { 1595 list = xreallocarray(list, size + 1, 1596 sizeof *list); 1597 list[size++] = tmp; 1598 continue; 1599 } 1600 free(tmp); 1601 1602 xasprintf(&tmp, "%s:%d", s_loop->name, wl->idx); 1603 if (strncmp(tmp, s, strlen(s)) == 0) { 1604 list = xreallocarray(list, size + 1, 1605 sizeof *list); 1606 list[size++] = tmp; 1607 continue; 1608 } 1609 free(tmp); 1610 } 1611 } 1612 } 1613 if (size == 1) { 1614 out = xstrdup(list[0]); 1615 colon = " "; 1616 } else if (size != 0) 1617 out = status_prompt_complete_prefix(list, size); 1618 if (out != NULL) { 1619 xasprintf(&tmp, "-%c%s%s", copy[1], out, colon); 1620 out = tmp; 1621 } 1622 1623 for (i = 0; i < size; i++) 1624 free((void *)list[i]); 1625 1626 found: 1627 free(copy); 1628 free(list); 1629 return (out); 1630 } 1631