1 /* $OpenBSD: status.c,v 1.241 2023/11/14 15:59:49 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 void status_message_callback(int, short, void *); 33 static void status_timer_callback(int, short, void *); 34 35 static char *status_prompt_find_history_file(void); 36 static const char *status_prompt_up_history(u_int *, u_int); 37 static const char *status_prompt_down_history(u_int *, u_int); 38 static void status_prompt_add_history(const char *, u_int); 39 40 static char *status_prompt_complete(struct client *, const char *, u_int); 41 static char *status_prompt_complete_window_menu(struct client *, 42 struct session *, const char *, u_int, char); 43 44 struct status_prompt_menu { 45 struct client *c; 46 u_int start; 47 u_int size; 48 char **list; 49 char flag; 50 }; 51 52 static const char *prompt_type_strings[] = { 53 "command", 54 "search", 55 "target", 56 "window-target" 57 }; 58 59 /* Status prompt history. */ 60 char **status_prompt_hlist[PROMPT_NTYPES]; 61 u_int status_prompt_hsize[PROMPT_NTYPES]; 62 63 /* Find the history file to load/save from/to. */ 64 static char * 65 status_prompt_find_history_file(void) 66 { 67 const char *home, *history_file; 68 char *path; 69 70 history_file = options_get_string(global_options, "history-file"); 71 if (*history_file == '\0') 72 return (NULL); 73 if (*history_file == '/') 74 return (xstrdup(history_file)); 75 76 if (history_file[0] != '~' || history_file[1] != '/') 77 return (NULL); 78 if ((home = find_home()) == NULL) 79 return (NULL); 80 xasprintf(&path, "%s%s", home, history_file + 1); 81 return (path); 82 } 83 84 /* Add loaded history item to the appropriate list. */ 85 static void 86 status_prompt_add_typed_history(char *line) 87 { 88 char *typestr; 89 enum prompt_type type = PROMPT_TYPE_INVALID; 90 91 typestr = strsep(&line, ":"); 92 if (line != NULL) 93 type = status_prompt_type(typestr); 94 if (type == PROMPT_TYPE_INVALID) { 95 /* 96 * Invalid types are not expected, but this provides backward 97 * compatibility with old history files. 98 */ 99 if (line != NULL) 100 *(--line) = ':'; 101 status_prompt_add_history(typestr, PROMPT_TYPE_COMMAND); 102 } else 103 status_prompt_add_history(line, type); 104 } 105 106 /* Load status prompt history from file. */ 107 void 108 status_prompt_load_history(void) 109 { 110 FILE *f; 111 char *history_file, *line, *tmp; 112 size_t length; 113 114 if ((history_file = status_prompt_find_history_file()) == NULL) 115 return; 116 log_debug("loading history from %s", history_file); 117 118 f = fopen(history_file, "r"); 119 if (f == NULL) { 120 log_debug("%s: %s", history_file, strerror(errno)); 121 free(history_file); 122 return; 123 } 124 free(history_file); 125 126 for (;;) { 127 if ((line = fgetln(f, &length)) == NULL) 128 break; 129 130 if (length > 0) { 131 if (line[length - 1] == '\n') { 132 line[length - 1] = '\0'; 133 status_prompt_add_typed_history(line); 134 } else { 135 tmp = xmalloc(length + 1); 136 memcpy(tmp, line, length); 137 tmp[length] = '\0'; 138 status_prompt_add_typed_history(tmp); 139 free(tmp); 140 } 141 } 142 } 143 fclose(f); 144 } 145 146 /* Save status prompt history to file. */ 147 void 148 status_prompt_save_history(void) 149 { 150 FILE *f; 151 u_int i, type; 152 char *history_file; 153 154 if ((history_file = status_prompt_find_history_file()) == NULL) 155 return; 156 log_debug("saving history to %s", history_file); 157 158 f = fopen(history_file, "w"); 159 if (f == NULL) { 160 log_debug("%s: %s", history_file, strerror(errno)); 161 free(history_file); 162 return; 163 } 164 free(history_file); 165 166 for (type = 0; type < PROMPT_NTYPES; type++) { 167 for (i = 0; i < status_prompt_hsize[type]; i++) { 168 fputs(prompt_type_strings[type], f); 169 fputc(':', f); 170 fputs(status_prompt_hlist[type][i], f); 171 fputc('\n', f); 172 } 173 } 174 fclose(f); 175 176 } 177 178 /* Status timer callback. */ 179 static void 180 status_timer_callback(__unused int fd, __unused short events, void *arg) 181 { 182 struct client *c = arg; 183 struct session *s = c->session; 184 struct timeval tv; 185 186 evtimer_del(&c->status.timer); 187 188 if (s == NULL) 189 return; 190 191 if (c->message_string == NULL && c->prompt_string == NULL) 192 c->flags |= CLIENT_REDRAWSTATUS; 193 194 timerclear(&tv); 195 tv.tv_sec = options_get_number(s->options, "status-interval"); 196 197 if (tv.tv_sec != 0) 198 evtimer_add(&c->status.timer, &tv); 199 log_debug("client %p, status interval %d", c, (int)tv.tv_sec); 200 } 201 202 /* Start status timer for client. */ 203 void 204 status_timer_start(struct client *c) 205 { 206 struct session *s = c->session; 207 208 if (event_initialized(&c->status.timer)) 209 evtimer_del(&c->status.timer); 210 else 211 evtimer_set(&c->status.timer, status_timer_callback, c); 212 213 if (s != NULL && options_get_number(s->options, "status")) 214 status_timer_callback(-1, 0, c); 215 } 216 217 /* Start status timer for all clients. */ 218 void 219 status_timer_start_all(void) 220 { 221 struct client *c; 222 223 TAILQ_FOREACH(c, &clients, entry) 224 status_timer_start(c); 225 } 226 227 /* Update status cache. */ 228 void 229 status_update_cache(struct session *s) 230 { 231 s->statuslines = options_get_number(s->options, "status"); 232 if (s->statuslines == 0) 233 s->statusat = -1; 234 else if (options_get_number(s->options, "status-position") == 0) 235 s->statusat = 0; 236 else 237 s->statusat = 1; 238 } 239 240 /* Get screen line of status line. -1 means off. */ 241 int 242 status_at_line(struct client *c) 243 { 244 struct session *s = c->session; 245 246 if (c->flags & (CLIENT_STATUSOFF|CLIENT_CONTROL)) 247 return (-1); 248 if (s->statusat != 1) 249 return (s->statusat); 250 return (c->tty.sy - status_line_size(c)); 251 } 252 253 /* Get size of status line for client's session. 0 means off. */ 254 u_int 255 status_line_size(struct client *c) 256 { 257 struct session *s = c->session; 258 259 if (c->flags & (CLIENT_STATUSOFF|CLIENT_CONTROL)) 260 return (0); 261 if (s == NULL) 262 return (options_get_number(global_s_options, "status")); 263 return (s->statuslines); 264 } 265 266 /* Get the prompt line number for client's session. 1 means at the bottom. */ 267 static u_int 268 status_prompt_line_at(struct client *c) 269 { 270 struct session *s = c->session; 271 272 if (c->flags & (CLIENT_STATUSOFF|CLIENT_CONTROL)) 273 return (1); 274 return (options_get_number(s->options, "message-line")); 275 } 276 277 /* Get window at window list position. */ 278 struct style_range * 279 status_get_range(struct client *c, u_int x, u_int y) 280 { 281 struct status_line *sl = &c->status; 282 struct style_range *sr; 283 284 if (y >= nitems(sl->entries)) 285 return (NULL); 286 TAILQ_FOREACH(sr, &sl->entries[y].ranges, entry) { 287 if (x >= sr->start && x < sr->end) 288 return (sr); 289 } 290 return (NULL); 291 } 292 293 /* Free all ranges. */ 294 static void 295 status_free_ranges(struct style_ranges *srs) 296 { 297 struct style_range *sr, *sr1; 298 299 TAILQ_FOREACH_SAFE(sr, srs, entry, sr1) { 300 TAILQ_REMOVE(srs, sr, entry); 301 free(sr); 302 } 303 } 304 305 /* Save old status line. */ 306 static void 307 status_push_screen(struct client *c) 308 { 309 struct status_line *sl = &c->status; 310 311 if (sl->active == &sl->screen) { 312 sl->active = xmalloc(sizeof *sl->active); 313 screen_init(sl->active, c->tty.sx, status_line_size(c), 0); 314 } 315 sl->references++; 316 } 317 318 /* Restore old status line. */ 319 static void 320 status_pop_screen(struct client *c) 321 { 322 struct status_line *sl = &c->status; 323 324 if (--sl->references == 0) { 325 screen_free(sl->active); 326 free(sl->active); 327 sl->active = &sl->screen; 328 } 329 } 330 331 /* Initialize status line. */ 332 void 333 status_init(struct client *c) 334 { 335 struct status_line *sl = &c->status; 336 u_int i; 337 338 for (i = 0; i < nitems(sl->entries); i++) 339 TAILQ_INIT(&sl->entries[i].ranges); 340 341 screen_init(&sl->screen, c->tty.sx, 1, 0); 342 sl->active = &sl->screen; 343 } 344 345 /* Free status line. */ 346 void 347 status_free(struct client *c) 348 { 349 struct status_line *sl = &c->status; 350 u_int i; 351 352 for (i = 0; i < nitems(sl->entries); i++) { 353 status_free_ranges(&sl->entries[i].ranges); 354 free((void *)sl->entries[i].expanded); 355 } 356 357 if (event_initialized(&sl->timer)) 358 evtimer_del(&sl->timer); 359 360 if (sl->active != &sl->screen) { 361 screen_free(sl->active); 362 free(sl->active); 363 } 364 screen_free(&sl->screen); 365 } 366 367 /* Draw status line for client. */ 368 int 369 status_redraw(struct client *c) 370 { 371 struct status_line *sl = &c->status; 372 struct status_line_entry *sle; 373 struct session *s = c->session; 374 struct screen_write_ctx ctx; 375 struct grid_cell gc; 376 u_int lines, i, n, width = c->tty.sx; 377 int flags, force = 0, changed = 0, fg, bg; 378 struct options_entry *o; 379 union options_value *ov; 380 struct format_tree *ft; 381 char *expanded; 382 383 log_debug("%s enter", __func__); 384 385 /* Shouldn't get here if not the active screen. */ 386 if (sl->active != &sl->screen) 387 fatalx("not the active screen"); 388 389 /* No status line? */ 390 lines = status_line_size(c); 391 if (c->tty.sy == 0 || lines == 0) 392 return (1); 393 394 /* Create format tree. */ 395 flags = FORMAT_STATUS; 396 if (c->flags & CLIENT_STATUSFORCE) 397 flags |= FORMAT_FORCE; 398 ft = format_create(c, NULL, FORMAT_NONE, flags); 399 format_defaults(ft, c, NULL, NULL, NULL); 400 401 /* Set up default colour. */ 402 style_apply(&gc, s->options, "status-style", ft); 403 fg = options_get_number(s->options, "status-fg"); 404 if (!COLOUR_DEFAULT(fg)) 405 gc.fg = fg; 406 bg = options_get_number(s->options, "status-bg"); 407 if (!COLOUR_DEFAULT(bg)) 408 gc.bg = bg; 409 if (!grid_cells_equal(&gc, &sl->style)) { 410 force = 1; 411 memcpy(&sl->style, &gc, sizeof sl->style); 412 } 413 414 /* Resize the target screen. */ 415 if (screen_size_x(&sl->screen) != width || 416 screen_size_y(&sl->screen) != lines) { 417 screen_resize(&sl->screen, width, lines, 0); 418 changed = force = 1; 419 } 420 screen_write_start(&ctx, &sl->screen); 421 422 /* Write the status lines. */ 423 o = options_get(s->options, "status-format"); 424 if (o == NULL) { 425 for (n = 0; n < width * lines; n++) 426 screen_write_putc(&ctx, &gc, ' '); 427 } else { 428 for (i = 0; i < lines; i++) { 429 screen_write_cursormove(&ctx, 0, i, 0); 430 431 ov = options_array_get(o, i); 432 if (ov == NULL) { 433 for (n = 0; n < width; n++) 434 screen_write_putc(&ctx, &gc, ' '); 435 continue; 436 } 437 sle = &sl->entries[i]; 438 439 expanded = format_expand_time(ft, ov->string); 440 if (!force && 441 sle->expanded != NULL && 442 strcmp(expanded, sle->expanded) == 0) { 443 free(expanded); 444 continue; 445 } 446 changed = 1; 447 448 for (n = 0; n < width; n++) 449 screen_write_putc(&ctx, &gc, ' '); 450 screen_write_cursormove(&ctx, 0, i, 0); 451 452 status_free_ranges(&sle->ranges); 453 format_draw(&ctx, &gc, width, expanded, &sle->ranges, 454 0); 455 456 free(sle->expanded); 457 sle->expanded = expanded; 458 } 459 } 460 screen_write_stop(&ctx); 461 462 /* Free the format tree. */ 463 format_free(ft); 464 465 /* Return if the status line has changed. */ 466 log_debug("%s exit: force=%d, changed=%d", __func__, force, changed); 467 return (force || changed); 468 } 469 470 /* Set a status line message. */ 471 void 472 status_message_set(struct client *c, int delay, int ignore_styles, 473 int ignore_keys, const char *fmt, ...) 474 { 475 struct timeval tv; 476 va_list ap; 477 char *s; 478 479 va_start(ap, fmt); 480 xvasprintf(&s, fmt, ap); 481 va_end(ap); 482 483 log_debug("%s: %s", __func__, s); 484 485 if (c == NULL) { 486 server_add_message("message: %s", s); 487 free(s); 488 return; 489 } 490 491 status_message_clear(c); 492 status_push_screen(c); 493 c->message_string = s; 494 server_add_message("%s message: %s", c->name, s); 495 496 /* 497 * With delay -1, the display-time option is used; zero means wait for 498 * key press; more than zero is the actual delay time in milliseconds. 499 */ 500 if (delay == -1) 501 delay = options_get_number(c->session->options, "display-time"); 502 if (delay > 0) { 503 tv.tv_sec = delay / 1000; 504 tv.tv_usec = (delay % 1000) * 1000L; 505 506 if (event_initialized(&c->message_timer)) 507 evtimer_del(&c->message_timer); 508 evtimer_set(&c->message_timer, status_message_callback, c); 509 510 evtimer_add(&c->message_timer, &tv); 511 } 512 513 if (delay != 0) 514 c->message_ignore_keys = ignore_keys; 515 c->message_ignore_styles = ignore_styles; 516 517 c->tty.flags |= (TTY_NOCURSOR|TTY_FREEZE); 518 c->flags |= CLIENT_REDRAWSTATUS; 519 } 520 521 /* Clear status line message. */ 522 void 523 status_message_clear(struct client *c) 524 { 525 if (c->message_string == NULL) 526 return; 527 528 free(c->message_string); 529 c->message_string = NULL; 530 531 if (c->prompt_string == NULL) 532 c->tty.flags &= ~(TTY_NOCURSOR|TTY_FREEZE); 533 c->flags |= CLIENT_ALLREDRAWFLAGS; /* was frozen and may have changed */ 534 535 status_pop_screen(c); 536 } 537 538 /* Clear status line message after timer expires. */ 539 static void 540 status_message_callback(__unused int fd, __unused short event, void *data) 541 { 542 struct client *c = data; 543 544 status_message_clear(c); 545 } 546 547 /* Draw client message on status line of present else on last line. */ 548 int 549 status_message_redraw(struct client *c) 550 { 551 struct status_line *sl = &c->status; 552 struct screen_write_ctx ctx; 553 struct session *s = c->session; 554 struct screen old_screen; 555 size_t len; 556 u_int lines, offset, messageline; 557 struct grid_cell gc; 558 struct format_tree *ft; 559 560 if (c->tty.sx == 0 || c->tty.sy == 0) 561 return (0); 562 memcpy(&old_screen, sl->active, sizeof old_screen); 563 564 lines = status_line_size(c); 565 if (lines <= 1) 566 lines = 1; 567 screen_init(sl->active, c->tty.sx, lines, 0); 568 569 messageline = status_prompt_line_at(c); 570 if (messageline > lines - 1) 571 messageline = lines - 1; 572 573 len = screen_write_strlen("%s", c->message_string); 574 if (len > c->tty.sx) 575 len = c->tty.sx; 576 577 ft = format_create_defaults(NULL, c, NULL, NULL, NULL); 578 style_apply(&gc, s->options, "message-style", ft); 579 format_free(ft); 580 581 screen_write_start(&ctx, sl->active); 582 screen_write_fast_copy(&ctx, &sl->screen, 0, 0, c->tty.sx, lines); 583 screen_write_cursormove(&ctx, 0, messageline, 0); 584 for (offset = 0; offset < c->tty.sx; offset++) 585 screen_write_putc(&ctx, &gc, ' '); 586 screen_write_cursormove(&ctx, 0, messageline, 0); 587 if (c->message_ignore_styles) 588 screen_write_nputs(&ctx, len, &gc, "%s", c->message_string); 589 else 590 format_draw(&ctx, &gc, c->tty.sx, c->message_string, NULL, 0); 591 screen_write_stop(&ctx); 592 593 if (grid_compare(sl->active->grid, old_screen.grid) == 0) { 594 screen_free(&old_screen); 595 return (0); 596 } 597 screen_free(&old_screen); 598 return (1); 599 } 600 601 /* Enable status line prompt. */ 602 void 603 status_prompt_set(struct client *c, struct cmd_find_state *fs, 604 const char *msg, const char *input, prompt_input_cb inputcb, 605 prompt_free_cb freecb, void *data, int flags, enum prompt_type prompt_type) 606 { 607 struct format_tree *ft; 608 char *tmp; 609 610 if (fs != NULL) 611 ft = format_create_from_state(NULL, c, fs); 612 else 613 ft = format_create_defaults(NULL, c, NULL, NULL, NULL); 614 615 if (input == NULL) 616 input = ""; 617 if (flags & PROMPT_NOFORMAT) 618 tmp = xstrdup(input); 619 else 620 tmp = format_expand_time(ft, input); 621 622 status_message_clear(c); 623 status_prompt_clear(c); 624 status_push_screen(c); 625 626 c->prompt_string = format_expand_time(ft, msg); 627 628 if (flags & PROMPT_INCREMENTAL) { 629 c->prompt_last = xstrdup(tmp); 630 c->prompt_buffer = utf8_fromcstr(""); 631 } else { 632 c->prompt_last = NULL; 633 c->prompt_buffer = utf8_fromcstr(tmp); 634 } 635 c->prompt_index = utf8_strlen(c->prompt_buffer); 636 637 c->prompt_inputcb = inputcb; 638 c->prompt_freecb = freecb; 639 c->prompt_data = data; 640 641 memset(c->prompt_hindex, 0, sizeof c->prompt_hindex); 642 643 c->prompt_flags = flags; 644 c->prompt_type = prompt_type; 645 c->prompt_mode = PROMPT_ENTRY; 646 647 if (~flags & PROMPT_INCREMENTAL) 648 c->tty.flags |= (TTY_NOCURSOR|TTY_FREEZE); 649 c->flags |= CLIENT_REDRAWSTATUS; 650 651 if (flags & PROMPT_INCREMENTAL) 652 c->prompt_inputcb(c, c->prompt_data, "=", 0); 653 654 free(tmp); 655 format_free(ft); 656 } 657 658 /* Remove status line prompt. */ 659 void 660 status_prompt_clear(struct client *c) 661 { 662 if (c->prompt_string == NULL) 663 return; 664 665 if (c->prompt_freecb != NULL && c->prompt_data != NULL) 666 c->prompt_freecb(c->prompt_data); 667 668 free(c->prompt_last); 669 c->prompt_last = NULL; 670 671 free(c->prompt_string); 672 c->prompt_string = NULL; 673 674 free(c->prompt_buffer); 675 c->prompt_buffer = NULL; 676 677 free(c->prompt_saved); 678 c->prompt_saved = NULL; 679 680 c->tty.flags &= ~(TTY_NOCURSOR|TTY_FREEZE); 681 c->flags |= CLIENT_ALLREDRAWFLAGS; /* was frozen and may have changed */ 682 683 status_pop_screen(c); 684 } 685 686 /* Update status line prompt with a new prompt string. */ 687 void 688 status_prompt_update(struct client *c, const char *msg, const char *input) 689 { 690 struct format_tree *ft; 691 char *tmp; 692 693 ft = format_create(c, NULL, FORMAT_NONE, 0); 694 format_defaults(ft, c, NULL, NULL, NULL); 695 696 tmp = format_expand_time(ft, input); 697 698 free(c->prompt_string); 699 c->prompt_string = format_expand_time(ft, msg); 700 701 free(c->prompt_buffer); 702 c->prompt_buffer = utf8_fromcstr(tmp); 703 c->prompt_index = utf8_strlen(c->prompt_buffer); 704 705 memset(c->prompt_hindex, 0, sizeof c->prompt_hindex); 706 707 c->flags |= CLIENT_REDRAWSTATUS; 708 709 free(tmp); 710 format_free(ft); 711 } 712 713 /* Draw client prompt on status line of present else on last line. */ 714 int 715 status_prompt_redraw(struct client *c) 716 { 717 struct status_line *sl = &c->status; 718 struct screen_write_ctx ctx; 719 struct session *s = c->session; 720 struct screen old_screen; 721 u_int i, lines, offset, left, start, width; 722 u_int pcursor, pwidth, promptline; 723 struct grid_cell gc, cursorgc; 724 struct format_tree *ft; 725 726 if (c->tty.sx == 0 || c->tty.sy == 0) 727 return (0); 728 memcpy(&old_screen, sl->active, sizeof old_screen); 729 730 lines = status_line_size(c); 731 if (lines <= 1) 732 lines = 1; 733 screen_init(sl->active, c->tty.sx, lines, 0); 734 735 promptline = status_prompt_line_at(c); 736 if (promptline > lines - 1) 737 promptline = lines - 1; 738 739 ft = format_create_defaults(NULL, c, NULL, NULL, NULL); 740 if (c->prompt_mode == PROMPT_COMMAND) 741 style_apply(&gc, s->options, "message-command-style", ft); 742 else 743 style_apply(&gc, s->options, "message-style", ft); 744 format_free(ft); 745 746 memcpy(&cursorgc, &gc, sizeof cursorgc); 747 cursorgc.attr ^= GRID_ATTR_REVERSE; 748 749 start = format_width(c->prompt_string); 750 if (start > c->tty.sx) 751 start = c->tty.sx; 752 753 screen_write_start(&ctx, sl->active); 754 screen_write_fast_copy(&ctx, &sl->screen, 0, 0, c->tty.sx, lines); 755 screen_write_cursormove(&ctx, 0, promptline, 0); 756 for (offset = 0; offset < c->tty.sx; offset++) 757 screen_write_putc(&ctx, &gc, ' '); 758 screen_write_cursormove(&ctx, 0, promptline, 0); 759 format_draw(&ctx, &gc, start, c->prompt_string, NULL, 0); 760 screen_write_cursormove(&ctx, start, promptline, 0); 761 762 left = c->tty.sx - start; 763 if (left == 0) 764 goto finished; 765 766 pcursor = utf8_strwidth(c->prompt_buffer, c->prompt_index); 767 pwidth = utf8_strwidth(c->prompt_buffer, -1); 768 if (pcursor >= left) { 769 /* 770 * The cursor would be outside the screen so start drawing 771 * with it on the right. 772 */ 773 offset = (pcursor - left) + 1; 774 pwidth = left; 775 } else 776 offset = 0; 777 if (pwidth > left) 778 pwidth = left; 779 c->prompt_cursor = start + c->prompt_index - offset; 780 781 width = 0; 782 for (i = 0; c->prompt_buffer[i].size != 0; i++) { 783 if (width < offset) { 784 width += c->prompt_buffer[i].width; 785 continue; 786 } 787 if (width >= offset + pwidth) 788 break; 789 width += c->prompt_buffer[i].width; 790 if (width > offset + pwidth) 791 break; 792 793 if (i != c->prompt_index) { 794 utf8_copy(&gc.data, &c->prompt_buffer[i]); 795 screen_write_cell(&ctx, &gc); 796 } else { 797 utf8_copy(&cursorgc.data, &c->prompt_buffer[i]); 798 screen_write_cell(&ctx, &cursorgc); 799 } 800 } 801 if (sl->active->cx < screen_size_x(sl->active) && c->prompt_index >= i) 802 screen_write_putc(&ctx, &cursorgc, ' '); 803 804 finished: 805 screen_write_stop(&ctx); 806 807 if (grid_compare(sl->active->grid, old_screen.grid) == 0) { 808 screen_free(&old_screen); 809 return (0); 810 } 811 screen_free(&old_screen); 812 return (1); 813 } 814 815 /* Is this a separator? */ 816 static int 817 status_prompt_in_list(const char *ws, const struct utf8_data *ud) 818 { 819 if (ud->size != 1 || ud->width != 1) 820 return (0); 821 return (strchr(ws, *ud->data) != NULL); 822 } 823 824 /* Is this a space? */ 825 static int 826 status_prompt_space(const struct utf8_data *ud) 827 { 828 if (ud->size != 1 || ud->width != 1) 829 return (0); 830 return (*ud->data == ' '); 831 } 832 833 /* 834 * Translate key from vi to emacs. Return 0 to drop key, 1 to process the key 835 * as an emacs key; return 2 to append to the buffer. 836 */ 837 static int 838 status_prompt_translate_key(struct client *c, key_code key, key_code *new_key) 839 { 840 if (c->prompt_mode == PROMPT_ENTRY) { 841 switch (key) { 842 case '\001': /* C-a */ 843 case '\003': /* C-c */ 844 case '\005': /* C-e */ 845 case '\007': /* C-g */ 846 case '\010': /* C-h */ 847 case '\011': /* Tab */ 848 case '\013': /* C-k */ 849 case '\016': /* C-n */ 850 case '\020': /* C-p */ 851 case '\024': /* C-t */ 852 case '\025': /* C-u */ 853 case '\027': /* C-w */ 854 case '\031': /* C-y */ 855 case '\n': 856 case '\r': 857 case KEYC_LEFT|KEYC_CTRL: 858 case KEYC_RIGHT|KEYC_CTRL: 859 case KEYC_BSPACE: 860 case KEYC_DC: 861 case KEYC_DOWN: 862 case KEYC_END: 863 case KEYC_HOME: 864 case KEYC_LEFT: 865 case KEYC_RIGHT: 866 case KEYC_UP: 867 *new_key = key; 868 return (1); 869 case '\033': /* Escape */ 870 c->prompt_mode = PROMPT_COMMAND; 871 c->flags |= CLIENT_REDRAWSTATUS; 872 return (0); 873 } 874 *new_key = key; 875 return (2); 876 } 877 878 switch (key) { 879 case KEYC_BSPACE: 880 *new_key = KEYC_LEFT; 881 return (1); 882 case 'A': 883 case 'I': 884 case 'C': 885 case 's': 886 case 'a': 887 c->prompt_mode = PROMPT_ENTRY; 888 c->flags |= CLIENT_REDRAWSTATUS; 889 break; /* switch mode and... */ 890 case 'S': 891 c->prompt_mode = PROMPT_ENTRY; 892 c->flags |= CLIENT_REDRAWSTATUS; 893 *new_key = '\025'; /* C-u */ 894 return (1); 895 case 'i': 896 case '\033': /* Escape */ 897 c->prompt_mode = PROMPT_ENTRY; 898 c->flags |= CLIENT_REDRAWSTATUS; 899 return (0); 900 } 901 902 switch (key) { 903 case 'A': 904 case '$': 905 *new_key = KEYC_END; 906 return (1); 907 case 'I': 908 case '0': 909 case '^': 910 *new_key = KEYC_HOME; 911 return (1); 912 case 'C': 913 case 'D': 914 *new_key = '\013'; /* C-k */ 915 return (1); 916 case KEYC_BSPACE: 917 case 'X': 918 *new_key = KEYC_BSPACE; 919 return (1); 920 case 'b': 921 *new_key = 'b'|KEYC_META; 922 return (1); 923 case 'B': 924 *new_key = 'B'|KEYC_VI; 925 return (1); 926 case 'd': 927 *new_key = '\025'; /* C-u */ 928 return (1); 929 case 'e': 930 *new_key = 'e'|KEYC_VI; 931 return (1); 932 case 'E': 933 *new_key = 'E'|KEYC_VI; 934 return (1); 935 case 'w': 936 *new_key = 'w'|KEYC_VI; 937 return (1); 938 case 'W': 939 *new_key = 'W'|KEYC_VI; 940 return (1); 941 case 'p': 942 *new_key = '\031'; /* C-y */ 943 return (1); 944 case 'q': 945 *new_key = '\003'; /* C-c */ 946 return (1); 947 case 's': 948 case KEYC_DC: 949 case 'x': 950 *new_key = KEYC_DC; 951 return (1); 952 case KEYC_DOWN: 953 case 'j': 954 *new_key = KEYC_DOWN; 955 return (1); 956 case KEYC_LEFT: 957 case 'h': 958 *new_key = KEYC_LEFT; 959 return (1); 960 case 'a': 961 case KEYC_RIGHT: 962 case 'l': 963 *new_key = KEYC_RIGHT; 964 return (1); 965 case KEYC_UP: 966 case 'k': 967 *new_key = KEYC_UP; 968 return (1); 969 case '\010' /* C-h */: 970 case '\003' /* C-c */: 971 case '\n': 972 case '\r': 973 return (1); 974 } 975 return (0); 976 } 977 978 /* Paste into prompt. */ 979 static int 980 status_prompt_paste(struct client *c) 981 { 982 struct paste_buffer *pb; 983 const char *bufdata; 984 size_t size, n, bufsize; 985 u_int i; 986 struct utf8_data *ud, *udp; 987 enum utf8_state more; 988 989 size = utf8_strlen(c->prompt_buffer); 990 if (c->prompt_saved != NULL) { 991 ud = c->prompt_saved; 992 n = utf8_strlen(c->prompt_saved); 993 } else { 994 if ((pb = paste_get_top(NULL)) == NULL) 995 return (0); 996 bufdata = paste_buffer_data(pb, &bufsize); 997 ud = xreallocarray(NULL, bufsize + 1, sizeof *ud); 998 udp = ud; 999 for (i = 0; i != bufsize; /* nothing */) { 1000 more = utf8_open(udp, bufdata[i]); 1001 if (more == UTF8_MORE) { 1002 while (++i != bufsize && more == UTF8_MORE) 1003 more = utf8_append(udp, bufdata[i]); 1004 if (more == UTF8_DONE) { 1005 udp++; 1006 continue; 1007 } 1008 i -= udp->have; 1009 } 1010 if (bufdata[i] <= 31 || bufdata[i] >= 127) 1011 break; 1012 utf8_set(udp, bufdata[i]); 1013 udp++; 1014 i++; 1015 } 1016 udp->size = 0; 1017 n = udp - ud; 1018 } 1019 if (n == 0) 1020 return (0); 1021 1022 c->prompt_buffer = xreallocarray(c->prompt_buffer, size + n + 1, 1023 sizeof *c->prompt_buffer); 1024 if (c->prompt_index == size) { 1025 memcpy(c->prompt_buffer + c->prompt_index, ud, 1026 n * sizeof *c->prompt_buffer); 1027 c->prompt_index += n; 1028 c->prompt_buffer[c->prompt_index].size = 0; 1029 } else { 1030 memmove(c->prompt_buffer + c->prompt_index + n, 1031 c->prompt_buffer + c->prompt_index, 1032 (size + 1 - c->prompt_index) * sizeof *c->prompt_buffer); 1033 memcpy(c->prompt_buffer + c->prompt_index, ud, 1034 n * sizeof *c->prompt_buffer); 1035 c->prompt_index += n; 1036 } 1037 1038 if (ud != c->prompt_saved) 1039 free(ud); 1040 return (1); 1041 } 1042 1043 /* Finish completion. */ 1044 static int 1045 status_prompt_replace_complete(struct client *c, const char *s) 1046 { 1047 char word[64], *allocated = NULL; 1048 size_t size, n, off, idx, used; 1049 struct utf8_data *first, *last, *ud; 1050 1051 /* Work out where the cursor currently is. */ 1052 idx = c->prompt_index; 1053 if (idx != 0) 1054 idx--; 1055 size = utf8_strlen(c->prompt_buffer); 1056 1057 /* Find the word we are in. */ 1058 first = &c->prompt_buffer[idx]; 1059 while (first > c->prompt_buffer && !status_prompt_space(first)) 1060 first--; 1061 while (first->size != 0 && status_prompt_space(first)) 1062 first++; 1063 last = &c->prompt_buffer[idx]; 1064 while (last->size != 0 && !status_prompt_space(last)) 1065 last++; 1066 while (last > c->prompt_buffer && status_prompt_space(last)) 1067 last--; 1068 if (last->size != 0) 1069 last++; 1070 if (last < first) 1071 return (0); 1072 if (s == NULL) { 1073 used = 0; 1074 for (ud = first; ud < last; ud++) { 1075 if (used + ud->size >= sizeof word) 1076 break; 1077 memcpy(word + used, ud->data, ud->size); 1078 used += ud->size; 1079 } 1080 if (ud != last) 1081 return (0); 1082 word[used] = '\0'; 1083 } 1084 1085 /* Try to complete it. */ 1086 if (s == NULL) { 1087 allocated = status_prompt_complete(c, word, 1088 first - c->prompt_buffer); 1089 if (allocated == NULL) 1090 return (0); 1091 s = allocated; 1092 } 1093 1094 /* Trim out word. */ 1095 n = size - (last - c->prompt_buffer) + 1; /* with \0 */ 1096 memmove(first, last, n * sizeof *c->prompt_buffer); 1097 size -= last - first; 1098 1099 /* Insert the new word. */ 1100 size += strlen(s); 1101 off = first - c->prompt_buffer; 1102 c->prompt_buffer = xreallocarray(c->prompt_buffer, size + 1, 1103 sizeof *c->prompt_buffer); 1104 first = c->prompt_buffer + off; 1105 memmove(first + strlen(s), first, n * sizeof *c->prompt_buffer); 1106 for (idx = 0; idx < strlen(s); idx++) 1107 utf8_set(&first[idx], s[idx]); 1108 c->prompt_index = (first - c->prompt_buffer) + strlen(s); 1109 1110 free(allocated); 1111 return (1); 1112 } 1113 1114 /* Prompt forward to the next beginning of a word. */ 1115 static void 1116 status_prompt_forward_word(struct client *c, size_t size, int vi, 1117 const char *separators) 1118 { 1119 size_t idx = c->prompt_index; 1120 int word_is_separators; 1121 1122 /* In emacs mode, skip until the first non-whitespace character. */ 1123 if (!vi) 1124 while (idx != size && 1125 status_prompt_space(&c->prompt_buffer[idx])) 1126 idx++; 1127 1128 /* Can't move forward if we're already at the end. */ 1129 if (idx == size) { 1130 c->prompt_index = idx; 1131 return; 1132 } 1133 1134 /* Determine the current character class (separators or not). */ 1135 word_is_separators = status_prompt_in_list(separators, 1136 &c->prompt_buffer[idx]) && 1137 !status_prompt_space(&c->prompt_buffer[idx]); 1138 1139 /* Skip ahead until the first space or opposite character class. */ 1140 do { 1141 idx++; 1142 if (status_prompt_space(&c->prompt_buffer[idx])) { 1143 /* In vi mode, go to the start of the next word. */ 1144 if (vi) 1145 while (idx != size && 1146 status_prompt_space(&c->prompt_buffer[idx])) 1147 idx++; 1148 break; 1149 } 1150 } while (idx != size && word_is_separators == status_prompt_in_list( 1151 separators, &c->prompt_buffer[idx])); 1152 1153 c->prompt_index = idx; 1154 } 1155 1156 /* Prompt forward to the next end of a word. */ 1157 static void 1158 status_prompt_end_word(struct client *c, size_t size, const char *separators) 1159 { 1160 size_t idx = c->prompt_index; 1161 int word_is_separators; 1162 1163 /* Can't move forward if we're already at the end. */ 1164 if (idx == size) 1165 return; 1166 1167 /* Find the next word. */ 1168 do { 1169 idx++; 1170 if (idx == size) { 1171 c->prompt_index = idx; 1172 return; 1173 } 1174 } while (status_prompt_space(&c->prompt_buffer[idx])); 1175 1176 /* Determine the character class (separators or not). */ 1177 word_is_separators = status_prompt_in_list(separators, 1178 &c->prompt_buffer[idx]); 1179 1180 /* Skip ahead until the next space or opposite character class. */ 1181 do { 1182 idx++; 1183 if (idx == size) 1184 break; 1185 } while (!status_prompt_space(&c->prompt_buffer[idx]) && 1186 word_is_separators == status_prompt_in_list(separators, 1187 &c->prompt_buffer[idx])); 1188 1189 /* Back up to the previous character to stop at the end of the word. */ 1190 c->prompt_index = idx - 1; 1191 } 1192 1193 /* Prompt backward to the previous beginning of a word. */ 1194 static void 1195 status_prompt_backward_word(struct client *c, const char *separators) 1196 { 1197 size_t idx = c->prompt_index; 1198 int word_is_separators; 1199 1200 /* Find non-whitespace. */ 1201 while (idx != 0) { 1202 --idx; 1203 if (!status_prompt_space(&c->prompt_buffer[idx])) 1204 break; 1205 } 1206 word_is_separators = status_prompt_in_list(separators, 1207 &c->prompt_buffer[idx]); 1208 1209 /* Find the character before the beginning of the word. */ 1210 while (idx != 0) { 1211 --idx; 1212 if (status_prompt_space(&c->prompt_buffer[idx]) || 1213 word_is_separators != status_prompt_in_list(separators, 1214 &c->prompt_buffer[idx])) { 1215 /* Go back to the word. */ 1216 idx++; 1217 break; 1218 } 1219 } 1220 c->prompt_index = idx; 1221 } 1222 1223 /* Handle keys in prompt. */ 1224 int 1225 status_prompt_key(struct client *c, key_code key) 1226 { 1227 struct options *oo = c->session->options; 1228 char *s, *cp, prefix = '='; 1229 const char *histstr, *separators = NULL, *keystring; 1230 size_t size, idx; 1231 struct utf8_data tmp; 1232 int keys, word_is_separators; 1233 1234 if (c->prompt_flags & PROMPT_KEY) { 1235 keystring = key_string_lookup_key(key, 0); 1236 c->prompt_inputcb(c, c->prompt_data, keystring, 1); 1237 status_prompt_clear(c); 1238 return (0); 1239 } 1240 size = utf8_strlen(c->prompt_buffer); 1241 1242 if (c->prompt_flags & PROMPT_NUMERIC) { 1243 if (key >= '0' && key <= '9') 1244 goto append_key; 1245 s = utf8_tocstr(c->prompt_buffer); 1246 c->prompt_inputcb(c, c->prompt_data, s, 1); 1247 status_prompt_clear(c); 1248 free(s); 1249 return (1); 1250 } 1251 key &= ~KEYC_MASK_FLAGS; 1252 1253 keys = options_get_number(c->session->options, "status-keys"); 1254 if (keys == MODEKEY_VI) { 1255 switch (status_prompt_translate_key(c, key, &key)) { 1256 case 1: 1257 goto process_key; 1258 case 2: 1259 goto append_key; 1260 default: 1261 return (0); 1262 } 1263 } 1264 1265 process_key: 1266 switch (key) { 1267 case KEYC_LEFT: 1268 case '\002': /* C-b */ 1269 if (c->prompt_index > 0) { 1270 c->prompt_index--; 1271 break; 1272 } 1273 break; 1274 case KEYC_RIGHT: 1275 case '\006': /* C-f */ 1276 if (c->prompt_index < size) { 1277 c->prompt_index++; 1278 break; 1279 } 1280 break; 1281 case KEYC_HOME: 1282 case '\001': /* C-a */ 1283 if (c->prompt_index != 0) { 1284 c->prompt_index = 0; 1285 break; 1286 } 1287 break; 1288 case KEYC_END: 1289 case '\005': /* C-e */ 1290 if (c->prompt_index != size) { 1291 c->prompt_index = size; 1292 break; 1293 } 1294 break; 1295 case '\011': /* Tab */ 1296 if (status_prompt_replace_complete(c, NULL)) 1297 goto changed; 1298 break; 1299 case KEYC_BSPACE: 1300 case '\010': /* C-h */ 1301 if (c->prompt_index != 0) { 1302 if (c->prompt_index == size) 1303 c->prompt_buffer[--c->prompt_index].size = 0; 1304 else { 1305 memmove(c->prompt_buffer + c->prompt_index - 1, 1306 c->prompt_buffer + c->prompt_index, 1307 (size + 1 - c->prompt_index) * 1308 sizeof *c->prompt_buffer); 1309 c->prompt_index--; 1310 } 1311 goto changed; 1312 } 1313 break; 1314 case KEYC_DC: 1315 case '\004': /* C-d */ 1316 if (c->prompt_index != size) { 1317 memmove(c->prompt_buffer + c->prompt_index, 1318 c->prompt_buffer + c->prompt_index + 1, 1319 (size + 1 - c->prompt_index) * 1320 sizeof *c->prompt_buffer); 1321 goto changed; 1322 } 1323 break; 1324 case '\025': /* C-u */ 1325 c->prompt_buffer[0].size = 0; 1326 c->prompt_index = 0; 1327 goto changed; 1328 case '\013': /* C-k */ 1329 if (c->prompt_index < size) { 1330 c->prompt_buffer[c->prompt_index].size = 0; 1331 goto changed; 1332 } 1333 break; 1334 case '\027': /* C-w */ 1335 separators = options_get_string(oo, "word-separators"); 1336 idx = c->prompt_index; 1337 1338 /* Find non-whitespace. */ 1339 while (idx != 0) { 1340 idx--; 1341 if (!status_prompt_space(&c->prompt_buffer[idx])) 1342 break; 1343 } 1344 word_is_separators = status_prompt_in_list(separators, 1345 &c->prompt_buffer[idx]); 1346 1347 /* Find the character before the beginning of the word. */ 1348 while (idx != 0) { 1349 idx--; 1350 if (status_prompt_space(&c->prompt_buffer[idx]) || 1351 word_is_separators != status_prompt_in_list( 1352 separators, &c->prompt_buffer[idx])) { 1353 /* Go back to the word. */ 1354 idx++; 1355 break; 1356 } 1357 } 1358 1359 free(c->prompt_saved); 1360 c->prompt_saved = xcalloc(sizeof *c->prompt_buffer, 1361 (c->prompt_index - idx) + 1); 1362 memcpy(c->prompt_saved, c->prompt_buffer + idx, 1363 (c->prompt_index - idx) * sizeof *c->prompt_buffer); 1364 1365 memmove(c->prompt_buffer + idx, 1366 c->prompt_buffer + c->prompt_index, 1367 (size + 1 - c->prompt_index) * 1368 sizeof *c->prompt_buffer); 1369 memset(c->prompt_buffer + size - (c->prompt_index - idx), 1370 '\0', (c->prompt_index - idx) * sizeof *c->prompt_buffer); 1371 c->prompt_index = idx; 1372 1373 goto changed; 1374 case KEYC_RIGHT|KEYC_CTRL: 1375 case 'f'|KEYC_META: 1376 separators = options_get_string(oo, "word-separators"); 1377 status_prompt_forward_word(c, size, 0, separators); 1378 goto changed; 1379 case 'E'|KEYC_VI: 1380 status_prompt_end_word(c, size, ""); 1381 goto changed; 1382 case 'e'|KEYC_VI: 1383 separators = options_get_string(oo, "word-separators"); 1384 status_prompt_end_word(c, size, separators); 1385 goto changed; 1386 case 'W'|KEYC_VI: 1387 status_prompt_forward_word(c, size, 1, ""); 1388 goto changed; 1389 case 'w'|KEYC_VI: 1390 separators = options_get_string(oo, "word-separators"); 1391 status_prompt_forward_word(c, size, 1, separators); 1392 goto changed; 1393 case 'B'|KEYC_VI: 1394 status_prompt_backward_word(c, ""); 1395 goto changed; 1396 case KEYC_LEFT|KEYC_CTRL: 1397 case 'b'|KEYC_META: 1398 separators = options_get_string(oo, "word-separators"); 1399 status_prompt_backward_word(c, separators); 1400 goto changed; 1401 case KEYC_UP: 1402 case '\020': /* C-p */ 1403 histstr = status_prompt_up_history(c->prompt_hindex, 1404 c->prompt_type); 1405 if (histstr == NULL) 1406 break; 1407 free(c->prompt_buffer); 1408 c->prompt_buffer = utf8_fromcstr(histstr); 1409 c->prompt_index = utf8_strlen(c->prompt_buffer); 1410 goto changed; 1411 case KEYC_DOWN: 1412 case '\016': /* C-n */ 1413 histstr = status_prompt_down_history(c->prompt_hindex, 1414 c->prompt_type); 1415 if (histstr == NULL) 1416 break; 1417 free(c->prompt_buffer); 1418 c->prompt_buffer = utf8_fromcstr(histstr); 1419 c->prompt_index = utf8_strlen(c->prompt_buffer); 1420 goto changed; 1421 case '\031': /* C-y */ 1422 if (status_prompt_paste(c)) 1423 goto changed; 1424 break; 1425 case '\024': /* C-t */ 1426 idx = c->prompt_index; 1427 if (idx < size) 1428 idx++; 1429 if (idx >= 2) { 1430 utf8_copy(&tmp, &c->prompt_buffer[idx - 2]); 1431 utf8_copy(&c->prompt_buffer[idx - 2], 1432 &c->prompt_buffer[idx - 1]); 1433 utf8_copy(&c->prompt_buffer[idx - 1], &tmp); 1434 c->prompt_index = idx; 1435 goto changed; 1436 } 1437 break; 1438 case '\r': 1439 case '\n': 1440 s = utf8_tocstr(c->prompt_buffer); 1441 if (*s != '\0') 1442 status_prompt_add_history(s, c->prompt_type); 1443 if (c->prompt_inputcb(c, c->prompt_data, s, 1) == 0) 1444 status_prompt_clear(c); 1445 free(s); 1446 break; 1447 case '\033': /* Escape */ 1448 case '\003': /* C-c */ 1449 case '\007': /* C-g */ 1450 if (c->prompt_inputcb(c, c->prompt_data, NULL, 1) == 0) 1451 status_prompt_clear(c); 1452 break; 1453 case '\022': /* C-r */ 1454 if (~c->prompt_flags & PROMPT_INCREMENTAL) 1455 break; 1456 if (c->prompt_buffer[0].size == 0) { 1457 prefix = '='; 1458 free(c->prompt_buffer); 1459 c->prompt_buffer = utf8_fromcstr(c->prompt_last); 1460 c->prompt_index = utf8_strlen(c->prompt_buffer); 1461 } else 1462 prefix = '-'; 1463 goto changed; 1464 case '\023': /* C-s */ 1465 if (~c->prompt_flags & PROMPT_INCREMENTAL) 1466 break; 1467 if (c->prompt_buffer[0].size == 0) { 1468 prefix = '='; 1469 free(c->prompt_buffer); 1470 c->prompt_buffer = utf8_fromcstr(c->prompt_last); 1471 c->prompt_index = utf8_strlen(c->prompt_buffer); 1472 } else 1473 prefix = '+'; 1474 goto changed; 1475 default: 1476 goto append_key; 1477 } 1478 1479 c->flags |= CLIENT_REDRAWSTATUS; 1480 return (0); 1481 1482 append_key: 1483 if (key <= 0x7f) 1484 utf8_set(&tmp, key); 1485 else if (KEYC_IS_UNICODE(key)) 1486 utf8_to_data(key, &tmp); 1487 else 1488 return (0); 1489 1490 c->prompt_buffer = xreallocarray(c->prompt_buffer, size + 2, 1491 sizeof *c->prompt_buffer); 1492 1493 if (c->prompt_index == size) { 1494 utf8_copy(&c->prompt_buffer[c->prompt_index], &tmp); 1495 c->prompt_index++; 1496 c->prompt_buffer[c->prompt_index].size = 0; 1497 } else { 1498 memmove(c->prompt_buffer + c->prompt_index + 1, 1499 c->prompt_buffer + c->prompt_index, 1500 (size + 1 - c->prompt_index) * 1501 sizeof *c->prompt_buffer); 1502 utf8_copy(&c->prompt_buffer[c->prompt_index], &tmp); 1503 c->prompt_index++; 1504 } 1505 1506 if (c->prompt_flags & PROMPT_SINGLE) { 1507 if (utf8_strlen(c->prompt_buffer) != 1) 1508 status_prompt_clear(c); 1509 else { 1510 s = utf8_tocstr(c->prompt_buffer); 1511 if (c->prompt_inputcb(c, c->prompt_data, s, 1) == 0) 1512 status_prompt_clear(c); 1513 free(s); 1514 } 1515 } 1516 1517 changed: 1518 c->flags |= CLIENT_REDRAWSTATUS; 1519 if (c->prompt_flags & PROMPT_INCREMENTAL) { 1520 s = utf8_tocstr(c->prompt_buffer); 1521 xasprintf(&cp, "%c%s", prefix, s); 1522 c->prompt_inputcb(c, c->prompt_data, cp, 0); 1523 free(cp); 1524 free(s); 1525 } 1526 return (0); 1527 } 1528 1529 /* Get previous line from the history. */ 1530 static const char * 1531 status_prompt_up_history(u_int *idx, u_int type) 1532 { 1533 /* 1534 * History runs from 0 to size - 1. Index is from 0 to size. Zero is 1535 * empty. 1536 */ 1537 1538 if (status_prompt_hsize[type] == 0 || 1539 idx[type] == status_prompt_hsize[type]) 1540 return (NULL); 1541 idx[type]++; 1542 return (status_prompt_hlist[type][status_prompt_hsize[type] - idx[type]]); 1543 } 1544 1545 /* Get next line from the history. */ 1546 static const char * 1547 status_prompt_down_history(u_int *idx, u_int type) 1548 { 1549 if (status_prompt_hsize[type] == 0 || idx[type] == 0) 1550 return (""); 1551 idx[type]--; 1552 if (idx[type] == 0) 1553 return (""); 1554 return (status_prompt_hlist[type][status_prompt_hsize[type] - idx[type]]); 1555 } 1556 1557 /* Add line to the history. */ 1558 static void 1559 status_prompt_add_history(const char *line, u_int type) 1560 { 1561 u_int i, oldsize, newsize, freecount, hlimit, new = 1; 1562 size_t movesize; 1563 1564 oldsize = status_prompt_hsize[type]; 1565 if (oldsize > 0 && 1566 strcmp(status_prompt_hlist[type][oldsize - 1], line) == 0) 1567 new = 0; 1568 1569 hlimit = options_get_number(global_options, "prompt-history-limit"); 1570 if (hlimit > oldsize) { 1571 if (new == 0) 1572 return; 1573 newsize = oldsize + new; 1574 } else { 1575 newsize = hlimit; 1576 freecount = oldsize + new - newsize; 1577 if (freecount > oldsize) 1578 freecount = oldsize; 1579 if (freecount == 0) 1580 return; 1581 for (i = 0; i < freecount; i++) 1582 free(status_prompt_hlist[type][i]); 1583 movesize = (oldsize - freecount) * 1584 sizeof *status_prompt_hlist[type]; 1585 if (movesize > 0) { 1586 memmove(&status_prompt_hlist[type][0], 1587 &status_prompt_hlist[type][freecount], movesize); 1588 } 1589 } 1590 1591 if (newsize == 0) { 1592 free(status_prompt_hlist[type]); 1593 status_prompt_hlist[type] = NULL; 1594 } else if (newsize != oldsize) { 1595 status_prompt_hlist[type] = 1596 xreallocarray(status_prompt_hlist[type], newsize, 1597 sizeof *status_prompt_hlist[type]); 1598 } 1599 1600 if (new == 1 && newsize > 0) 1601 status_prompt_hlist[type][newsize - 1] = xstrdup(line); 1602 status_prompt_hsize[type] = newsize; 1603 } 1604 1605 /* Add to completion list. */ 1606 static void 1607 status_prompt_add_list(char ***list, u_int *size, const char *s) 1608 { 1609 u_int i; 1610 1611 for (i = 0; i < *size; i++) { 1612 if (strcmp((*list)[i], s) == 0) 1613 return; 1614 } 1615 *list = xreallocarray(*list, (*size) + 1, sizeof **list); 1616 (*list)[(*size)++] = xstrdup(s); 1617 } 1618 1619 /* Build completion list. */ 1620 static char ** 1621 status_prompt_complete_list(u_int *size, const char *s, int at_start) 1622 { 1623 char **list = NULL, *tmp; 1624 const char **layout, *value, *cp; 1625 const struct cmd_entry **cmdent; 1626 const struct options_table_entry *oe; 1627 size_t slen = strlen(s), valuelen; 1628 struct options_entry *o; 1629 struct options_array_item *a; 1630 const char *layouts[] = { 1631 "even-horizontal", "even-vertical", "main-horizontal", 1632 "main-vertical", "tiled", NULL 1633 }; 1634 1635 *size = 0; 1636 for (cmdent = cmd_table; *cmdent != NULL; cmdent++) { 1637 if (strncmp((*cmdent)->name, s, slen) == 0) 1638 status_prompt_add_list(&list, size, (*cmdent)->name); 1639 if ((*cmdent)->alias != NULL && 1640 strncmp((*cmdent)->alias, s, slen) == 0) 1641 status_prompt_add_list(&list, size, (*cmdent)->alias); 1642 } 1643 o = options_get_only(global_options, "command-alias"); 1644 if (o != NULL) { 1645 a = options_array_first(o); 1646 while (a != NULL) { 1647 value = options_array_item_value(a)->string; 1648 if ((cp = strchr(value, '=')) == NULL) 1649 goto next; 1650 valuelen = cp - value; 1651 if (slen > valuelen || strncmp(value, s, slen) != 0) 1652 goto next; 1653 1654 xasprintf(&tmp, "%.*s", (int)valuelen, value); 1655 status_prompt_add_list(&list, size, tmp); 1656 free(tmp); 1657 1658 next: 1659 a = options_array_next(a); 1660 } 1661 } 1662 if (at_start) 1663 return (list); 1664 for (oe = options_table; oe->name != NULL; oe++) { 1665 if (strncmp(oe->name, s, slen) == 0) 1666 status_prompt_add_list(&list, size, oe->name); 1667 } 1668 for (layout = layouts; *layout != NULL; layout++) { 1669 if (strncmp(*layout, s, slen) == 0) 1670 status_prompt_add_list(&list, size, *layout); 1671 } 1672 return (list); 1673 } 1674 1675 /* Find longest prefix. */ 1676 static char * 1677 status_prompt_complete_prefix(char **list, u_int size) 1678 { 1679 char *out; 1680 u_int i; 1681 size_t j; 1682 1683 if (list == NULL || size == 0) 1684 return (NULL); 1685 out = xstrdup(list[0]); 1686 for (i = 1; i < size; i++) { 1687 j = strlen(list[i]); 1688 if (j > strlen(out)) 1689 j = strlen(out); 1690 for (; j > 0; j--) { 1691 if (out[j - 1] != list[i][j - 1]) 1692 out[j - 1] = '\0'; 1693 } 1694 } 1695 return (out); 1696 } 1697 1698 /* Complete word menu callback. */ 1699 static void 1700 status_prompt_menu_callback(__unused struct menu *menu, u_int idx, key_code key, 1701 void *data) 1702 { 1703 struct status_prompt_menu *spm = data; 1704 struct client *c = spm->c; 1705 u_int i; 1706 char *s; 1707 1708 if (key != KEYC_NONE) { 1709 idx += spm->start; 1710 if (spm->flag == '\0') 1711 s = xstrdup(spm->list[idx]); 1712 else 1713 xasprintf(&s, "-%c%s", spm->flag, spm->list[idx]); 1714 if (c->prompt_type == PROMPT_TYPE_WINDOW_TARGET) { 1715 free(c->prompt_buffer); 1716 c->prompt_buffer = utf8_fromcstr(s); 1717 c->prompt_index = utf8_strlen(c->prompt_buffer); 1718 c->flags |= CLIENT_REDRAWSTATUS; 1719 } else if (status_prompt_replace_complete(c, s)) 1720 c->flags |= CLIENT_REDRAWSTATUS; 1721 free(s); 1722 } 1723 1724 for (i = 0; i < spm->size; i++) 1725 free(spm->list[i]); 1726 free(spm->list); 1727 } 1728 1729 /* Show complete word menu. */ 1730 static int 1731 status_prompt_complete_list_menu(struct client *c, char **list, u_int size, 1732 u_int offset, char flag) 1733 { 1734 struct menu *menu; 1735 struct menu_item item; 1736 struct status_prompt_menu *spm; 1737 u_int lines = status_line_size(c), height, i; 1738 u_int py; 1739 1740 if (size <= 1) 1741 return (0); 1742 if (c->tty.sy - lines < 3) 1743 return (0); 1744 1745 spm = xmalloc(sizeof *spm); 1746 spm->c = c; 1747 spm->size = size; 1748 spm->list = list; 1749 spm->flag = flag; 1750 1751 height = c->tty.sy - lines - 2; 1752 if (height > 10) 1753 height = 10; 1754 if (height > size) 1755 height = size; 1756 spm->start = size - height; 1757 1758 menu = menu_create(""); 1759 for (i = spm->start; i < size; i++) { 1760 item.name = list[i]; 1761 item.key = '0' + (i - spm->start); 1762 item.command = NULL; 1763 menu_add_item(menu, &item, NULL, c, NULL); 1764 } 1765 1766 if (options_get_number(c->session->options, "status-position") == 0) 1767 py = lines; 1768 else 1769 py = c->tty.sy - 3 - height; 1770 offset += utf8_cstrwidth(c->prompt_string); 1771 if (offset > 2) 1772 offset -= 2; 1773 else 1774 offset = 0; 1775 1776 if (menu_display(menu, MENU_NOMOUSE|MENU_TAB, 0, NULL, offset, py, c, 1777 BOX_LINES_DEFAULT, NULL, NULL, NULL, NULL, 1778 status_prompt_menu_callback, spm) != 0) { 1779 menu_free(menu); 1780 free(spm); 1781 return (0); 1782 } 1783 return (1); 1784 } 1785 1786 /* Show complete word menu. */ 1787 static char * 1788 status_prompt_complete_window_menu(struct client *c, struct session *s, 1789 const char *word, u_int offset, char flag) 1790 { 1791 struct menu *menu; 1792 struct menu_item item; 1793 struct status_prompt_menu *spm; 1794 struct winlink *wl; 1795 char **list = NULL, *tmp; 1796 u_int lines = status_line_size(c), height; 1797 u_int py, size = 0; 1798 1799 if (c->tty.sy - lines < 3) 1800 return (NULL); 1801 1802 spm = xmalloc(sizeof *spm); 1803 spm->c = c; 1804 spm->flag = flag; 1805 1806 height = c->tty.sy - lines - 2; 1807 if (height > 10) 1808 height = 10; 1809 spm->start = 0; 1810 1811 menu = menu_create(""); 1812 RB_FOREACH(wl, winlinks, &s->windows) { 1813 if (word != NULL && *word != '\0') { 1814 xasprintf(&tmp, "%d", wl->idx); 1815 if (strncmp(tmp, word, strlen(word)) != 0) { 1816 free(tmp); 1817 continue; 1818 } 1819 free(tmp); 1820 } 1821 1822 list = xreallocarray(list, size + 1, sizeof *list); 1823 if (c->prompt_type == PROMPT_TYPE_WINDOW_TARGET) { 1824 xasprintf(&tmp, "%d (%s)", wl->idx, wl->window->name); 1825 xasprintf(&list[size++], "%d", wl->idx); 1826 } else { 1827 xasprintf(&tmp, "%s:%d (%s)", s->name, wl->idx, 1828 wl->window->name); 1829 xasprintf(&list[size++], "%s:%d", s->name, wl->idx); 1830 } 1831 item.name = tmp; 1832 item.key = '0' + size - 1; 1833 item.command = NULL; 1834 menu_add_item(menu, &item, NULL, c, NULL); 1835 free(tmp); 1836 1837 if (size == height) 1838 break; 1839 } 1840 if (size == 0) { 1841 menu_free(menu); 1842 return (NULL); 1843 } 1844 if (size == 1) { 1845 menu_free(menu); 1846 if (flag != '\0') { 1847 xasprintf(&tmp, "-%c%s", flag, list[0]); 1848 free(list[0]); 1849 } else 1850 tmp = list[0]; 1851 free(list); 1852 return (tmp); 1853 } 1854 if (height > size) 1855 height = size; 1856 1857 spm->size = size; 1858 spm->list = list; 1859 1860 if (options_get_number(c->session->options, "status-position") == 0) 1861 py = lines; 1862 else 1863 py = c->tty.sy - 3 - height; 1864 offset += utf8_cstrwidth(c->prompt_string); 1865 if (offset > 2) 1866 offset -= 2; 1867 else 1868 offset = 0; 1869 1870 if (menu_display(menu, MENU_NOMOUSE|MENU_TAB, 0, NULL, offset, py, c, 1871 BOX_LINES_DEFAULT, NULL, NULL, NULL, NULL, 1872 status_prompt_menu_callback, spm) != 0) { 1873 menu_free(menu); 1874 free(spm); 1875 return (NULL); 1876 } 1877 return (NULL); 1878 } 1879 1880 /* Sort complete list. */ 1881 static int 1882 status_prompt_complete_sort(const void *a, const void *b) 1883 { 1884 const char **aa = (const char **)a, **bb = (const char **)b; 1885 1886 return (strcmp(*aa, *bb)); 1887 } 1888 1889 /* Complete a session. */ 1890 static char * 1891 status_prompt_complete_session(char ***list, u_int *size, const char *s, 1892 char flag) 1893 { 1894 struct session *loop; 1895 char *out, *tmp, n[11]; 1896 1897 RB_FOREACH(loop, sessions, &sessions) { 1898 if (*s == '\0' || strncmp(loop->name, s, strlen(s)) == 0) { 1899 *list = xreallocarray(*list, (*size) + 2, 1900 sizeof **list); 1901 xasprintf(&(*list)[(*size)++], "%s:", loop->name); 1902 } else if (*s == '$') { 1903 xsnprintf(n, sizeof n, "%u", loop->id); 1904 if (s[1] == '\0' || 1905 strncmp(n, s + 1, strlen(s) - 1) == 0) { 1906 *list = xreallocarray(*list, (*size) + 2, 1907 sizeof **list); 1908 xasprintf(&(*list)[(*size)++], "$%s:", n); 1909 } 1910 } 1911 } 1912 out = status_prompt_complete_prefix(*list, *size); 1913 if (out != NULL && flag != '\0') { 1914 xasprintf(&tmp, "-%c%s", flag, out); 1915 free(out); 1916 out = tmp; 1917 } 1918 return (out); 1919 } 1920 1921 /* Complete word. */ 1922 static char * 1923 status_prompt_complete(struct client *c, const char *word, u_int offset) 1924 { 1925 struct session *session; 1926 const char *s, *colon; 1927 char **list = NULL, *copy = NULL, *out = NULL; 1928 char flag = '\0'; 1929 u_int size = 0, i; 1930 1931 if (*word == '\0' && 1932 c->prompt_type != PROMPT_TYPE_TARGET && 1933 c->prompt_type != PROMPT_TYPE_WINDOW_TARGET) 1934 return (NULL); 1935 1936 if (c->prompt_type != PROMPT_TYPE_TARGET && 1937 c->prompt_type != PROMPT_TYPE_WINDOW_TARGET && 1938 strncmp(word, "-t", 2) != 0 && 1939 strncmp(word, "-s", 2) != 0) { 1940 list = status_prompt_complete_list(&size, word, offset == 0); 1941 if (size == 0) 1942 out = NULL; 1943 else if (size == 1) 1944 xasprintf(&out, "%s ", list[0]); 1945 else 1946 out = status_prompt_complete_prefix(list, size); 1947 goto found; 1948 } 1949 1950 if (c->prompt_type == PROMPT_TYPE_TARGET || 1951 c->prompt_type == PROMPT_TYPE_WINDOW_TARGET) { 1952 s = word; 1953 flag = '\0'; 1954 } else { 1955 s = word + 2; 1956 flag = word[1]; 1957 offset += 2; 1958 } 1959 1960 /* If this is a window completion, open the window menu. */ 1961 if (c->prompt_type == PROMPT_TYPE_WINDOW_TARGET) { 1962 out = status_prompt_complete_window_menu(c, c->session, s, 1963 offset, '\0'); 1964 goto found; 1965 } 1966 colon = strchr(s, ':'); 1967 1968 /* If there is no colon, complete as a session. */ 1969 if (colon == NULL) { 1970 out = status_prompt_complete_session(&list, &size, s, flag); 1971 goto found; 1972 } 1973 1974 /* If there is a colon but no period, find session and show a menu. */ 1975 if (strchr(colon + 1, '.') == NULL) { 1976 if (*s == ':') 1977 session = c->session; 1978 else { 1979 copy = xstrdup(s); 1980 *strchr(copy, ':') = '\0'; 1981 session = session_find(copy); 1982 free(copy); 1983 if (session == NULL) 1984 goto found; 1985 } 1986 out = status_prompt_complete_window_menu(c, session, colon + 1, 1987 offset, flag); 1988 if (out == NULL) 1989 return (NULL); 1990 } 1991 1992 found: 1993 if (size != 0) { 1994 qsort(list, size, sizeof *list, status_prompt_complete_sort); 1995 for (i = 0; i < size; i++) 1996 log_debug("complete %u: %s", i, list[i]); 1997 } 1998 1999 if (out != NULL && strcmp(word, out) == 0) { 2000 free(out); 2001 out = NULL; 2002 } 2003 if (out != NULL || 2004 !status_prompt_complete_list_menu(c, list, size, offset, flag)) { 2005 for (i = 0; i < size; i++) 2006 free(list[i]); 2007 free(list); 2008 } 2009 return (out); 2010 } 2011 2012 /* Return the type of the prompt as an enum. */ 2013 enum prompt_type 2014 status_prompt_type(const char *type) 2015 { 2016 u_int i; 2017 2018 for (i = 0; i < PROMPT_NTYPES; i++) { 2019 if (strcmp(type, status_prompt_type_string(i)) == 0) 2020 return (i); 2021 } 2022 return (PROMPT_TYPE_INVALID); 2023 } 2024 2025 /* Accessor for prompt_type_strings. */ 2026 const char * 2027 status_prompt_type_string(u_int type) 2028 { 2029 if (type >= PROMPT_NTYPES) 2030 return ("invalid"); 2031 return (prompt_type_strings[type]); 2032 } 2033