1 /* $Id: status.c,v 1.1.1.2 2011/08/17 18:40:05 jmmv Exp $ */ 2 3 /* 4 * Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net> 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 char *status_redraw_get_left( 33 struct client *, time_t, int, struct grid_cell *, size_t *); 34 char *status_redraw_get_right( 35 struct client *, time_t, int, struct grid_cell *, size_t *); 36 char *status_find_job(struct client *, char **); 37 void status_job_free(void *); 38 void status_job_callback(struct job *); 39 char *status_print( 40 struct client *, struct winlink *, time_t, struct grid_cell *); 41 void status_replace1(struct client *, struct session *, struct winlink *, 42 struct window_pane *, char **, char **, char *, size_t, int); 43 void status_message_callback(int, short, void *); 44 45 const char *status_prompt_up_history(u_int *); 46 const char *status_prompt_down_history(u_int *); 47 void status_prompt_add_history(const char *); 48 char *status_prompt_complete(const char *); 49 50 /* Status prompt history. */ 51 ARRAY_DECL(, char *) status_prompt_history = ARRAY_INITIALIZER; 52 53 /* Status output tree. */ 54 RB_GENERATE(status_out_tree, status_out, entry, status_out_cmp); 55 56 /* Output tree comparison function. */ 57 int 58 status_out_cmp(struct status_out *so1, struct status_out *so2) 59 { 60 return (strcmp(so1->cmd, so2->cmd)); 61 } 62 63 /* Retrieve options for left string. */ 64 char * 65 status_redraw_get_left(struct client *c, 66 time_t t, int utf8flag, struct grid_cell *gc, size_t *size) 67 { 68 struct session *s = c->session; 69 char *left; 70 u_char fg, bg, attr; 71 size_t leftlen; 72 73 fg = options_get_number(&s->options, "status-left-fg"); 74 if (fg != 8) 75 colour_set_fg(gc, fg); 76 bg = options_get_number(&s->options, "status-left-bg"); 77 if (bg != 8) 78 colour_set_bg(gc, bg); 79 attr = options_get_number(&s->options, "status-left-attr"); 80 if (attr != 0) 81 gc->attr = attr; 82 83 left = status_replace(c, NULL, 84 NULL, NULL, options_get_string(&s->options, "status-left"), t, 1); 85 86 *size = options_get_number(&s->options, "status-left-length"); 87 leftlen = screen_write_cstrlen(utf8flag, "%s", left); 88 if (leftlen < *size) 89 *size = leftlen; 90 return (left); 91 } 92 93 /* Retrieve options for right string. */ 94 char * 95 status_redraw_get_right(struct client *c, 96 time_t t, int utf8flag, struct grid_cell *gc, size_t *size) 97 { 98 struct session *s = c->session; 99 char *right; 100 u_char fg, bg, attr; 101 size_t rightlen; 102 103 fg = options_get_number(&s->options, "status-right-fg"); 104 if (fg != 8) 105 colour_set_fg(gc, fg); 106 bg = options_get_number(&s->options, "status-right-bg"); 107 if (bg != 8) 108 colour_set_bg(gc, bg); 109 attr = options_get_number(&s->options, "status-right-attr"); 110 if (attr != 0) 111 gc->attr = attr; 112 113 right = status_replace(c, NULL, 114 NULL, NULL, options_get_string(&s->options, "status-right"), t, 1); 115 116 *size = options_get_number(&s->options, "status-right-length"); 117 rightlen = screen_write_cstrlen(utf8flag, "%s", right); 118 if (rightlen < *size) 119 *size = rightlen; 120 return (right); 121 } 122 123 /* Set window at window list position. */ 124 void 125 status_set_window_at(struct client *c, u_int x) 126 { 127 struct session *s = c->session; 128 struct winlink *wl; 129 130 x += s->wlmouse; 131 RB_FOREACH(wl, winlinks, &s->windows) { 132 if (x < wl->status_width && 133 session_select(s, wl->idx) == 0) { 134 server_redraw_session(s); 135 } 136 x -= wl->status_width + 1; 137 } 138 } 139 140 /* Draw status for client on the last lines of given context. */ 141 int 142 status_redraw(struct client *c) 143 { 144 struct screen_write_ctx ctx; 145 struct session *s = c->session; 146 struct winlink *wl; 147 struct screen old_status, window_list; 148 struct grid_cell stdgc, lgc, rgc, gc; 149 time_t t; 150 char *left, *right; 151 u_int offset, needed; 152 u_int wlstart, wlwidth, wlavailable, wloffset, wlsize; 153 size_t llen, rlen; 154 int larrow, rarrow, utf8flag; 155 156 /* No status line? */ 157 if (c->tty.sy == 0 || !options_get_number(&s->options, "status")) 158 return (1); 159 left = right = NULL; 160 larrow = rarrow = 0; 161 162 /* Update status timer. */ 163 if (gettimeofday(&c->status_timer, NULL) != 0) 164 fatal("gettimeofday failed"); 165 t = c->status_timer.tv_sec; 166 167 /* Set up default colour. */ 168 memcpy(&stdgc, &grid_default_cell, sizeof gc); 169 colour_set_fg(&stdgc, options_get_number(&s->options, "status-fg")); 170 colour_set_bg(&stdgc, options_get_number(&s->options, "status-bg")); 171 stdgc.attr |= options_get_number(&s->options, "status-attr"); 172 173 /* Create the target screen. */ 174 memcpy(&old_status, &c->status, sizeof old_status); 175 screen_init(&c->status, c->tty.sx, 1, 0); 176 screen_write_start(&ctx, NULL, &c->status); 177 for (offset = 0; offset < c->tty.sx; offset++) 178 screen_write_putc(&ctx, &stdgc, ' '); 179 screen_write_stop(&ctx); 180 181 /* If the height is one line, blank status line. */ 182 if (c->tty.sy <= 1) 183 goto out; 184 185 /* Get UTF-8 flag. */ 186 utf8flag = options_get_number(&s->options, "status-utf8"); 187 188 /* Work out left and right strings. */ 189 memcpy(&lgc, &stdgc, sizeof lgc); 190 left = status_redraw_get_left(c, t, utf8flag, &lgc, &llen); 191 memcpy(&rgc, &stdgc, sizeof rgc); 192 right = status_redraw_get_right(c, t, utf8flag, &rgc, &rlen); 193 194 /* 195 * Figure out how much space we have for the window list. If there 196 * isn't enough space, just show a blank status line. 197 */ 198 needed = 0; 199 if (llen != 0) 200 needed += llen + 1; 201 if (rlen != 0) 202 needed += rlen + 1; 203 if (c->tty.sx == 0 || c->tty.sx <= needed) 204 goto out; 205 wlavailable = c->tty.sx - needed; 206 207 /* Calculate the total size needed for the window list. */ 208 wlstart = wloffset = wlwidth = 0; 209 RB_FOREACH(wl, winlinks, &s->windows) { 210 if (wl->status_text != NULL) 211 xfree(wl->status_text); 212 memcpy(&wl->status_cell, &stdgc, sizeof wl->status_cell); 213 wl->status_text = status_print(c, wl, t, &wl->status_cell); 214 wl->status_width = 215 screen_write_cstrlen(utf8flag, "%s", wl->status_text); 216 217 if (wl == s->curw) 218 wloffset = wlwidth; 219 wlwidth += wl->status_width + 1; 220 } 221 222 /* Create a new screen for the window list. */ 223 screen_init(&window_list, wlwidth, 1, 0); 224 225 /* And draw the window list into it. */ 226 screen_write_start(&ctx, NULL, &window_list); 227 RB_FOREACH(wl, winlinks, &s->windows) { 228 screen_write_cnputs(&ctx, 229 -1, &wl->status_cell, utf8flag, "%s", wl->status_text); 230 screen_write_putc(&ctx, &stdgc, ' '); 231 } 232 screen_write_stop(&ctx); 233 234 /* If there is enough space for the total width, skip to draw now. */ 235 if (wlwidth <= wlavailable) 236 goto draw; 237 238 /* Find size of current window text. */ 239 wlsize = s->curw->status_width; 240 241 /* 242 * If the current window is already on screen, good to draw from the 243 * start and just leave off the end. 244 */ 245 if (wloffset + wlsize < wlavailable) { 246 if (wlavailable > 0) { 247 rarrow = 1; 248 wlavailable--; 249 } 250 wlwidth = wlavailable; 251 } else { 252 /* 253 * Work out how many characters we need to omit from the 254 * start. There are wlavailable characters to fill, and 255 * wloffset + wlsize must be the last. So, the start character 256 * is wloffset + wlsize - wlavailable. 257 */ 258 if (wlavailable > 0) { 259 larrow = 1; 260 wlavailable--; 261 } 262 263 wlstart = wloffset + wlsize - wlavailable; 264 if (wlavailable > 0 && wlwidth > wlstart + wlavailable + 1) { 265 rarrow = 1; 266 wlstart++; 267 wlavailable--; 268 } 269 wlwidth = wlavailable; 270 } 271 272 /* Bail if anything is now too small too. */ 273 if (wlwidth == 0 || wlavailable == 0) { 274 screen_free(&window_list); 275 goto out; 276 } 277 278 /* 279 * Now the start position is known, work out the state of the left and 280 * right arrows. 281 */ 282 offset = 0; 283 RB_FOREACH(wl, winlinks, &s->windows) { 284 if (wl->flags & WINLINK_ALERTFLAGS && 285 larrow == 1 && offset < wlstart) 286 larrow = -1; 287 288 offset += wl->status_width; 289 290 if (wl->flags & WINLINK_ALERTFLAGS && 291 rarrow == 1 && offset > wlstart + wlwidth) 292 rarrow = -1; 293 } 294 295 draw: 296 /* Begin drawing. */ 297 screen_write_start(&ctx, NULL, &c->status); 298 299 /* Draw the left string and arrow. */ 300 screen_write_cursormove(&ctx, 0, 0); 301 if (llen != 0) { 302 screen_write_cnputs(&ctx, llen, &lgc, utf8flag, "%s", left); 303 screen_write_putc(&ctx, &stdgc, ' '); 304 } 305 if (larrow != 0) { 306 memcpy(&gc, &stdgc, sizeof gc); 307 if (larrow == -1) 308 gc.attr ^= GRID_ATTR_REVERSE; 309 screen_write_putc(&ctx, &gc, '<'); 310 } 311 312 /* Draw the right string and arrow. */ 313 if (rarrow != 0) { 314 screen_write_cursormove(&ctx, c->tty.sx - rlen - 2, 0); 315 memcpy(&gc, &stdgc, sizeof gc); 316 if (rarrow == -1) 317 gc.attr ^= GRID_ATTR_REVERSE; 318 screen_write_putc(&ctx, &gc, '>'); 319 } else 320 screen_write_cursormove(&ctx, c->tty.sx - rlen - 1, 0); 321 if (rlen != 0) { 322 screen_write_putc(&ctx, &stdgc, ' '); 323 screen_write_cnputs(&ctx, rlen, &rgc, utf8flag, "%s", right); 324 } 325 326 /* Figure out the offset for the window list. */ 327 if (llen != 0) 328 wloffset = llen + 1; 329 else 330 wloffset = 0; 331 if (wlwidth < wlavailable) { 332 switch (options_get_number(&s->options, "status-justify")) { 333 case 1: /* centered */ 334 wloffset += (wlavailable - wlwidth) / 2; 335 break; 336 case 2: /* right */ 337 wloffset += (wlavailable - wlwidth); 338 break; 339 } 340 } 341 if (larrow != 0) 342 wloffset++; 343 344 /* Copy the window list. */ 345 s->wlmouse = -wloffset + wlstart; 346 screen_write_cursormove(&ctx, wloffset, 0); 347 screen_write_copy(&ctx, &window_list, wlstart, 0, wlwidth, 1); 348 screen_free(&window_list); 349 350 screen_write_stop(&ctx); 351 352 out: 353 if (left != NULL) 354 xfree(left); 355 if (right != NULL) 356 xfree(right); 357 358 if (grid_compare(c->status.grid, old_status.grid) == 0) { 359 screen_free(&old_status); 360 return (0); 361 } 362 screen_free(&old_status); 363 return (1); 364 } 365 366 /* Replace a single special sequence (prefixed by #). */ 367 void 368 status_replace1(struct client *c, struct session *s, struct winlink *wl, 369 struct window_pane *wp, char **iptr, char **optr, char *out, 370 size_t outsize, int jobsflag) 371 { 372 char ch, tmp[256], *ptr, *endptr, *freeptr; 373 size_t ptrlen; 374 long limit; 375 376 if (s == NULL) 377 s = c->session; 378 if (wl == NULL) 379 wl = s->curw; 380 if (wp == NULL) 381 wp = wl->window->active; 382 383 errno = 0; 384 limit = strtol(*iptr, &endptr, 10); 385 if ((limit == 0 && errno != EINVAL) || 386 (limit == LONG_MIN && errno != ERANGE) || 387 (limit == LONG_MAX && errno != ERANGE) || 388 limit != 0) 389 *iptr = endptr; 390 if (limit <= 0) 391 limit = LONG_MAX; 392 393 freeptr = NULL; 394 395 switch (*(*iptr)++) { 396 case '(': 397 if (!jobsflag) { 398 ch = ')'; 399 goto skip_to; 400 } 401 if ((ptr = status_find_job(c, iptr)) == NULL) 402 return; 403 goto do_replace; 404 case 'D': 405 xsnprintf(tmp, sizeof tmp, "%%%u", wp->id); 406 ptr = tmp; 407 goto do_replace; 408 case 'H': 409 if (gethostname(tmp, sizeof tmp) != 0) 410 fatal("gethostname failed"); 411 ptr = tmp; 412 goto do_replace; 413 case 'h': 414 if (gethostname(tmp, sizeof tmp) != 0) 415 fatal("gethostname failed"); 416 if ((ptr = strchr(tmp, '.')) != NULL) 417 *ptr = '\0'; 418 ptr = tmp; 419 goto do_replace; 420 case 'I': 421 xsnprintf(tmp, sizeof tmp, "%d", wl->idx); 422 ptr = tmp; 423 goto do_replace; 424 case 'P': 425 xsnprintf( 426 tmp, sizeof tmp, "%u", window_pane_index(wl->window, wp)); 427 ptr = tmp; 428 goto do_replace; 429 case 'S': 430 ptr = s->name; 431 goto do_replace; 432 case 'T': 433 ptr = wp->base.title; 434 goto do_replace; 435 case 'W': 436 ptr = wl->window->name; 437 goto do_replace; 438 case 'F': 439 ptr = window_printable_flags(s, wl); 440 freeptr = ptr; 441 goto do_replace; 442 case '[': 443 /* 444 * Embedded style, handled at display time. Leave present and 445 * skip input until ]. 446 */ 447 ch = ']'; 448 goto skip_to; 449 case '#': 450 *(*optr)++ = '#'; 451 break; 452 } 453 454 return; 455 456 do_replace: 457 ptrlen = strlen(ptr); 458 if ((size_t) limit < ptrlen) 459 ptrlen = limit; 460 461 if (*optr + ptrlen >= out + outsize - 1) 462 return; 463 while (ptrlen > 0 && *ptr != '\0') { 464 *(*optr)++ = *ptr++; 465 ptrlen--; 466 } 467 468 if (freeptr != NULL) 469 xfree(freeptr); 470 return; 471 472 skip_to: 473 *(*optr)++ = '#'; 474 475 (*iptr)--; /* include ch */ 476 while (**iptr != ch && **iptr != '\0') { 477 if (*optr >= out + outsize - 1) 478 break; 479 *(*optr)++ = *(*iptr)++; 480 } 481 } 482 483 /* Replace special sequences in fmt. */ 484 char * 485 status_replace(struct client *c, struct session *s, struct winlink *wl, 486 struct window_pane *wp, const char *fmt, time_t t, int jobsflag) 487 { 488 static char out[BUFSIZ]; 489 char in[BUFSIZ], ch, *iptr, *optr; 490 491 strftime(in, sizeof in, fmt, localtime(&t)); 492 in[(sizeof in) - 1] = '\0'; 493 494 iptr = in; 495 optr = out; 496 497 while (*iptr != '\0') { 498 if (optr >= out + (sizeof out) - 1) 499 break; 500 ch = *iptr++; 501 502 if (ch != '#' || *iptr == '\0') { 503 *optr++ = ch; 504 continue; 505 } 506 status_replace1( 507 c, s, wl, wp, &iptr, &optr, out, sizeof out, jobsflag); 508 } 509 *optr = '\0'; 510 511 return (xstrdup(out)); 512 } 513 514 /* Figure out job name and get its result, starting it off if necessary. */ 515 char * 516 status_find_job(struct client *c, char **iptr) 517 { 518 struct status_out *so, so_find; 519 char *cmd; 520 int lastesc; 521 size_t len; 522 523 if (**iptr == '\0') 524 return (NULL); 525 if (**iptr == ')') { /* no command given */ 526 (*iptr)++; 527 return (NULL); 528 } 529 530 cmd = xmalloc(strlen(*iptr) + 1); 531 len = 0; 532 533 lastesc = 0; 534 for (; **iptr != '\0'; (*iptr)++) { 535 if (!lastesc && **iptr == ')') 536 break; /* unescaped ) is the end */ 537 if (!lastesc && **iptr == '\\') { 538 lastesc = 1; 539 continue; /* skip \ if not escaped */ 540 } 541 lastesc = 0; 542 cmd[len++] = **iptr; 543 } 544 if (**iptr == '\0') /* no terminating ) */ { 545 xfree(cmd); 546 return (NULL); 547 } 548 (*iptr)++; /* skip final ) */ 549 cmd[len] = '\0'; 550 551 /* First try in the new tree. */ 552 so_find.cmd = cmd; 553 so = RB_FIND(status_out_tree, &c->status_new, &so_find); 554 if (so != NULL && so->out != NULL) 555 return (so->out); 556 557 /* If not found at all, start the job and add to the tree. */ 558 if (so == NULL) { 559 job_run(cmd, status_job_callback, status_job_free, c); 560 c->references++; 561 562 so = xmalloc(sizeof *so); 563 so->cmd = xstrdup(cmd); 564 so->out = NULL; 565 RB_INSERT(status_out_tree, &c->status_new, so); 566 } 567 568 /* Lookup in the old tree. */ 569 so_find.cmd = cmd; 570 so = RB_FIND(status_out_tree, &c->status_old, &so_find); 571 xfree(cmd); 572 if (so != NULL) 573 return (so->out); 574 return (NULL); 575 } 576 577 /* Free job tree. */ 578 void 579 status_free_jobs(struct status_out_tree *sotree) 580 { 581 struct status_out *so, *so_next; 582 583 so_next = RB_MIN(status_out_tree, sotree); 584 while (so_next != NULL) { 585 so = so_next; 586 so_next = RB_NEXT(status_out_tree, sotree, so); 587 588 RB_REMOVE(status_out_tree, sotree, so); 589 if (so->out != NULL) 590 xfree(so->out); 591 xfree(so->cmd); 592 xfree(so); 593 } 594 } 595 596 /* Update jobs on status interval. */ 597 void 598 status_update_jobs(struct client *c) 599 { 600 /* Free the old tree. */ 601 status_free_jobs(&c->status_old); 602 603 /* Move the new to old. */ 604 memcpy(&c->status_old, &c->status_new, sizeof c->status_old); 605 RB_INIT(&c->status_new); 606 } 607 608 /* Free status job. */ 609 void 610 status_job_free(void *data) 611 { 612 struct client *c = data; 613 614 c->references--; 615 } 616 617 /* Job has finished: save its result. */ 618 void 619 status_job_callback(struct job *job) 620 { 621 struct client *c = job->data; 622 struct status_out *so, so_find; 623 char *line, *buf; 624 size_t len; 625 626 if (c->flags & CLIENT_DEAD) 627 return; 628 629 so_find.cmd = job->cmd; 630 so = RB_FIND(status_out_tree, &c->status_new, &so_find); 631 if (so == NULL || so->out != NULL) 632 return; 633 634 buf = NULL; 635 if ((line = evbuffer_readline(job->event->input)) == NULL) { 636 len = EVBUFFER_LENGTH(job->event->input); 637 buf = xmalloc(len + 1); 638 if (len != 0) 639 memcpy(buf, EVBUFFER_DATA(job->event->input), len); 640 buf[len] = '\0'; 641 } else 642 buf = xstrdup(line); 643 644 so->out = buf; 645 server_status_client(c); 646 } 647 648 /* Return winlink status line entry and adjust gc as necessary. */ 649 char * 650 status_print( 651 struct client *c, struct winlink *wl, time_t t, struct grid_cell *gc) 652 { 653 struct options *oo = &wl->window->options; 654 struct session *s = c->session; 655 const char *fmt; 656 char *text; 657 u_char fg, bg, attr; 658 659 fg = options_get_number(oo, "window-status-fg"); 660 if (fg != 8) 661 colour_set_fg(gc, fg); 662 bg = options_get_number(oo, "window-status-bg"); 663 if (bg != 8) 664 colour_set_bg(gc, bg); 665 attr = options_get_number(oo, "window-status-attr"); 666 if (attr != 0) 667 gc->attr = attr; 668 fmt = options_get_string(oo, "window-status-format"); 669 if (wl == s->curw) { 670 fg = options_get_number(oo, "window-status-current-fg"); 671 if (fg != 8) 672 colour_set_fg(gc, fg); 673 bg = options_get_number(oo, "window-status-current-bg"); 674 if (bg != 8) 675 colour_set_bg(gc, bg); 676 attr = options_get_number(oo, "window-status-current-attr"); 677 if (attr != 0) 678 gc->attr = attr; 679 fmt = options_get_string(oo, "window-status-current-format"); 680 } 681 682 if (wl->flags & WINLINK_ALERTFLAGS) { 683 fg = options_get_number(oo, "window-status-alert-fg"); 684 if (fg != 8) 685 colour_set_fg(gc, fg); 686 bg = options_get_number(oo, "window-status-alert-bg"); 687 if (bg != 8) 688 colour_set_bg(gc, bg); 689 attr = options_get_number(oo, "window-status-alert-attr"); 690 if (attr != 0) 691 gc->attr = attr; 692 } 693 694 text = status_replace(c, NULL, wl, NULL, fmt, t, 1); 695 return (text); 696 } 697 698 /* Set a status line message. */ 699 void printflike2 700 status_message_set(struct client *c, const char *fmt, ...) 701 { 702 struct timeval tv; 703 struct session *s = c->session; 704 struct message_entry *msg; 705 va_list ap; 706 int delay; 707 u_int i, limit; 708 709 status_prompt_clear(c); 710 status_message_clear(c); 711 712 va_start(ap, fmt); 713 xvasprintf(&c->message_string, fmt, ap); 714 va_end(ap); 715 716 ARRAY_EXPAND(&c->message_log, 1); 717 msg = &ARRAY_LAST(&c->message_log); 718 msg->msg_time = time(NULL); 719 msg->msg = xstrdup(c->message_string); 720 721 if (s == NULL) 722 limit = 0; 723 else 724 limit = options_get_number(&s->options, "message-limit"); 725 if (ARRAY_LENGTH(&c->message_log) > limit) { 726 limit = ARRAY_LENGTH(&c->message_log) - limit; 727 for (i = 0; i < limit; i++) { 728 msg = &ARRAY_FIRST(&c->message_log); 729 xfree(msg->msg); 730 ARRAY_REMOVE(&c->message_log, 0); 731 } 732 } 733 734 delay = options_get_number(&c->session->options, "display-time"); 735 tv.tv_sec = delay / 1000; 736 tv.tv_usec = (delay % 1000) * 1000L; 737 738 evtimer_del(&c->message_timer); 739 evtimer_set(&c->message_timer, status_message_callback, c); 740 evtimer_add(&c->message_timer, &tv); 741 742 c->tty.flags |= (TTY_NOCURSOR|TTY_FREEZE); 743 c->flags |= CLIENT_STATUS; 744 } 745 746 /* Clear status line message. */ 747 void 748 status_message_clear(struct client *c) 749 { 750 if (c->message_string == NULL) 751 return; 752 753 xfree(c->message_string); 754 c->message_string = NULL; 755 756 c->tty.flags &= ~(TTY_NOCURSOR|TTY_FREEZE); 757 c->flags |= CLIENT_REDRAW; /* screen was frozen and may have changed */ 758 759 screen_reinit(&c->status); 760 } 761 762 /* Clear status line message after timer expires. */ 763 /* ARGSUSED */ 764 void 765 status_message_callback(unused int fd, unused short event, void *data) 766 { 767 struct client *c = data; 768 769 status_message_clear(c); 770 } 771 772 /* Draw client message on status line of present else on last line. */ 773 int 774 status_message_redraw(struct client *c) 775 { 776 struct screen_write_ctx ctx; 777 struct session *s = c->session; 778 struct screen old_status; 779 size_t len; 780 struct grid_cell gc; 781 int utf8flag; 782 783 if (c->tty.sx == 0 || c->tty.sy == 0) 784 return (0); 785 memcpy(&old_status, &c->status, sizeof old_status); 786 screen_init(&c->status, c->tty.sx, 1, 0); 787 788 utf8flag = options_get_number(&s->options, "status-utf8"); 789 790 len = screen_write_strlen(utf8flag, "%s", c->message_string); 791 if (len > c->tty.sx) 792 len = c->tty.sx; 793 794 memcpy(&gc, &grid_default_cell, sizeof gc); 795 colour_set_fg(&gc, options_get_number(&s->options, "message-fg")); 796 colour_set_bg(&gc, options_get_number(&s->options, "message-bg")); 797 gc.attr |= options_get_number(&s->options, "message-attr"); 798 799 screen_write_start(&ctx, NULL, &c->status); 800 801 screen_write_cursormove(&ctx, 0, 0); 802 screen_write_nputs(&ctx, len, &gc, utf8flag, "%s", c->message_string); 803 for (; len < c->tty.sx; len++) 804 screen_write_putc(&ctx, &gc, ' '); 805 806 screen_write_stop(&ctx); 807 808 if (grid_compare(c->status.grid, old_status.grid) == 0) { 809 screen_free(&old_status); 810 return (0); 811 } 812 screen_free(&old_status); 813 return (1); 814 } 815 816 /* Enable status line prompt. */ 817 void 818 status_prompt_set(struct client *c, const char *msg, const char *input, 819 int (*callbackfn)(void *, const char *), void (*freefn)(void *), 820 void *data, int flags) 821 { 822 int keys; 823 824 status_message_clear(c); 825 status_prompt_clear(c); 826 827 c->prompt_string = status_replace(c, NULL, NULL, NULL, msg, 828 time(NULL), 0); 829 830 if (input == NULL) 831 input = ""; 832 c->prompt_buffer = status_replace(c, NULL, NULL, NULL, input, 833 time(NULL), 0); 834 c->prompt_index = strlen(c->prompt_buffer); 835 836 c->prompt_callbackfn = callbackfn; 837 c->prompt_freefn = freefn; 838 c->prompt_data = data; 839 840 c->prompt_hindex = 0; 841 842 c->prompt_flags = flags; 843 844 keys = options_get_number(&c->session->options, "status-keys"); 845 if (keys == MODEKEY_EMACS) 846 mode_key_init(&c->prompt_mdata, &mode_key_tree_emacs_edit); 847 else 848 mode_key_init(&c->prompt_mdata, &mode_key_tree_vi_edit); 849 850 c->tty.flags |= (TTY_NOCURSOR|TTY_FREEZE); 851 c->flags |= CLIENT_STATUS; 852 } 853 854 /* Remove status line prompt. */ 855 void 856 status_prompt_clear(struct client *c) 857 { 858 if (c->prompt_string == NULL) 859 return; 860 861 if (c->prompt_freefn != NULL && c->prompt_data != NULL) 862 c->prompt_freefn(c->prompt_data); 863 864 xfree(c->prompt_string); 865 c->prompt_string = NULL; 866 867 xfree(c->prompt_buffer); 868 c->prompt_buffer = NULL; 869 870 c->tty.flags &= ~(TTY_NOCURSOR|TTY_FREEZE); 871 c->flags |= CLIENT_REDRAW; /* screen was frozen and may have changed */ 872 873 screen_reinit(&c->status); 874 } 875 876 /* Update status line prompt with a new prompt string. */ 877 void 878 status_prompt_update(struct client *c, const char *msg, const char *input) 879 { 880 xfree(c->prompt_string); 881 c->prompt_string = status_replace(c, NULL, NULL, NULL, msg, 882 time(NULL), 0); 883 884 xfree(c->prompt_buffer); 885 if (input == NULL) 886 input = ""; 887 c->prompt_buffer = status_replace(c, NULL, NULL, NULL, input, 888 time(NULL), 0); 889 c->prompt_index = strlen(c->prompt_buffer); 890 891 c->prompt_hindex = 0; 892 893 c->flags |= CLIENT_STATUS; 894 } 895 896 /* Draw client prompt on status line of present else on last line. */ 897 int 898 status_prompt_redraw(struct client *c) 899 { 900 struct screen_write_ctx ctx; 901 struct session *s = c->session; 902 struct screen old_status; 903 size_t i, size, left, len, off; 904 struct grid_cell gc, *gcp; 905 int utf8flag; 906 907 if (c->tty.sx == 0 || c->tty.sy == 0) 908 return (0); 909 memcpy(&old_status, &c->status, sizeof old_status); 910 screen_init(&c->status, c->tty.sx, 1, 0); 911 912 utf8flag = options_get_number(&s->options, "status-utf8"); 913 914 len = screen_write_strlen(utf8flag, "%s", c->prompt_string); 915 if (len > c->tty.sx) 916 len = c->tty.sx; 917 off = 0; 918 919 memcpy(&gc, &grid_default_cell, sizeof gc); 920 colour_set_fg(&gc, options_get_number(&s->options, "message-fg")); 921 colour_set_bg(&gc, options_get_number(&s->options, "message-bg")); 922 gc.attr |= options_get_number(&s->options, "message-attr"); 923 924 screen_write_start(&ctx, NULL, &c->status); 925 926 screen_write_cursormove(&ctx, 0, 0); 927 screen_write_nputs(&ctx, len, &gc, utf8flag, "%s", c->prompt_string); 928 929 left = c->tty.sx - len; 930 if (left != 0) { 931 size = screen_write_strlen(utf8flag, "%s", c->prompt_buffer); 932 if (c->prompt_index >= left) { 933 off = c->prompt_index - left + 1; 934 if (c->prompt_index == size) 935 left--; 936 size = left; 937 } 938 screen_write_nputs( 939 &ctx, left, &gc, utf8flag, "%s", c->prompt_buffer + off); 940 941 for (i = len + size; i < c->tty.sx; i++) 942 screen_write_putc(&ctx, &gc, ' '); 943 } 944 945 screen_write_stop(&ctx); 946 947 /* Apply fake cursor. */ 948 off = len + c->prompt_index - off; 949 gcp = grid_view_get_cell(c->status.grid, off, 0); 950 gcp->attr ^= GRID_ATTR_REVERSE; 951 952 if (grid_compare(c->status.grid, old_status.grid) == 0) { 953 screen_free(&old_status); 954 return (0); 955 } 956 screen_free(&old_status); 957 return (1); 958 } 959 960 /* Handle keys in prompt. */ 961 void 962 status_prompt_key(struct client *c, int key) 963 { 964 struct paste_buffer *pb; 965 char *s, *first, *last, word[64], swapc; 966 const char *histstr; 967 u_char ch; 968 size_t size, n, off, idx; 969 970 size = strlen(c->prompt_buffer); 971 switch (mode_key_lookup(&c->prompt_mdata, key)) { 972 case MODEKEYEDIT_CURSORLEFT: 973 if (c->prompt_index > 0) { 974 c->prompt_index--; 975 c->flags |= CLIENT_STATUS; 976 } 977 break; 978 case MODEKEYEDIT_SWITCHMODEAPPEND: 979 case MODEKEYEDIT_CURSORRIGHT: 980 if (c->prompt_index < size) { 981 c->prompt_index++; 982 c->flags |= CLIENT_STATUS; 983 } 984 break; 985 case MODEKEYEDIT_STARTOFLINE: 986 if (c->prompt_index != 0) { 987 c->prompt_index = 0; 988 c->flags |= CLIENT_STATUS; 989 } 990 break; 991 case MODEKEYEDIT_ENDOFLINE: 992 if (c->prompt_index != size) { 993 c->prompt_index = size; 994 c->flags |= CLIENT_STATUS; 995 } 996 break; 997 case MODEKEYEDIT_COMPLETE: 998 if (*c->prompt_buffer == '\0') 999 break; 1000 1001 idx = c->prompt_index; 1002 if (idx != 0) 1003 idx--; 1004 1005 /* Find the word we are in. */ 1006 first = c->prompt_buffer + idx; 1007 while (first > c->prompt_buffer && *first != ' ') 1008 first--; 1009 while (*first == ' ') 1010 first++; 1011 last = c->prompt_buffer + idx; 1012 while (*last != '\0' && *last != ' ') 1013 last++; 1014 while (*last == ' ') 1015 last--; 1016 if (*last != '\0') 1017 last++; 1018 if (last <= first || 1019 ((size_t) (last - first)) > (sizeof word) - 1) 1020 break; 1021 memcpy(word, first, last - first); 1022 word[last - first] = '\0'; 1023 1024 /* And try to complete it. */ 1025 if ((s = status_prompt_complete(word)) == NULL) 1026 break; 1027 1028 /* Trim out word. */ 1029 n = size - (last - c->prompt_buffer) + 1; /* with \0 */ 1030 memmove(first, last, n); 1031 size -= last - first; 1032 1033 /* Insert the new word. */ 1034 size += strlen(s); 1035 off = first - c->prompt_buffer; 1036 c->prompt_buffer = xrealloc(c->prompt_buffer, 1, size + 1); 1037 first = c->prompt_buffer + off; 1038 memmove(first + strlen(s), first, n); 1039 memcpy(first, s, strlen(s)); 1040 1041 c->prompt_index = (first - c->prompt_buffer) + strlen(s); 1042 xfree(s); 1043 1044 c->flags |= CLIENT_STATUS; 1045 break; 1046 case MODEKEYEDIT_BACKSPACE: 1047 if (c->prompt_index != 0) { 1048 if (c->prompt_index == size) 1049 c->prompt_buffer[--c->prompt_index] = '\0'; 1050 else { 1051 memmove(c->prompt_buffer + c->prompt_index - 1, 1052 c->prompt_buffer + c->prompt_index, 1053 size + 1 - c->prompt_index); 1054 c->prompt_index--; 1055 } 1056 c->flags |= CLIENT_STATUS; 1057 } 1058 break; 1059 case MODEKEYEDIT_DELETE: 1060 if (c->prompt_index != size) { 1061 memmove(c->prompt_buffer + c->prompt_index, 1062 c->prompt_buffer + c->prompt_index + 1, 1063 size + 1 - c->prompt_index); 1064 c->flags |= CLIENT_STATUS; 1065 } 1066 break; 1067 case MODEKEYEDIT_DELETELINE: 1068 *c->prompt_buffer = '\0'; 1069 c->prompt_index = 0; 1070 c->flags |= CLIENT_STATUS; 1071 break; 1072 case MODEKEYEDIT_DELETETOENDOFLINE: 1073 if (c->prompt_index < size) { 1074 c->prompt_buffer[c->prompt_index] = '\0'; 1075 c->flags |= CLIENT_STATUS; 1076 } 1077 break; 1078 case MODEKEYEDIT_HISTORYUP: 1079 histstr = status_prompt_up_history(&c->prompt_hindex); 1080 if (histstr == NULL) 1081 break; 1082 xfree(c->prompt_buffer); 1083 c->prompt_buffer = xstrdup(histstr); 1084 c->prompt_index = strlen(c->prompt_buffer); 1085 c->flags |= CLIENT_STATUS; 1086 break; 1087 case MODEKEYEDIT_HISTORYDOWN: 1088 histstr = status_prompt_down_history(&c->prompt_hindex); 1089 if (histstr == NULL) 1090 break; 1091 xfree(c->prompt_buffer); 1092 c->prompt_buffer = xstrdup(histstr); 1093 c->prompt_index = strlen(c->prompt_buffer); 1094 c->flags |= CLIENT_STATUS; 1095 break; 1096 case MODEKEYEDIT_PASTE: 1097 if ((pb = paste_get_top(&global_buffers)) == NULL) 1098 break; 1099 for (n = 0; n < pb->size; n++) { 1100 ch = (u_char) pb->data[n]; 1101 if (ch < 32 || ch == 127) 1102 break; 1103 } 1104 1105 c->prompt_buffer = xrealloc(c->prompt_buffer, 1, size + n + 1); 1106 if (c->prompt_index == size) { 1107 memcpy(c->prompt_buffer + c->prompt_index, pb->data, n); 1108 c->prompt_index += n; 1109 c->prompt_buffer[c->prompt_index] = '\0'; 1110 } else { 1111 memmove(c->prompt_buffer + c->prompt_index + n, 1112 c->prompt_buffer + c->prompt_index, 1113 size + 1 - c->prompt_index); 1114 memcpy(c->prompt_buffer + c->prompt_index, pb->data, n); 1115 c->prompt_index += n; 1116 } 1117 1118 c->flags |= CLIENT_STATUS; 1119 break; 1120 case MODEKEYEDIT_TRANSPOSECHARS: 1121 idx = c->prompt_index; 1122 if (idx < size) 1123 idx++; 1124 if (idx >= 2) { 1125 swapc = c->prompt_buffer[idx - 2]; 1126 c->prompt_buffer[idx - 2] = c->prompt_buffer[idx - 1]; 1127 c->prompt_buffer[idx - 1] = swapc; 1128 c->prompt_index = idx; 1129 c->flags |= CLIENT_STATUS; 1130 } 1131 break; 1132 case MODEKEYEDIT_ENTER: 1133 if (*c->prompt_buffer != '\0') 1134 status_prompt_add_history(c->prompt_buffer); 1135 if (c->prompt_callbackfn(c->prompt_data, c->prompt_buffer) == 0) 1136 status_prompt_clear(c); 1137 break; 1138 case MODEKEYEDIT_CANCEL: 1139 if (c->prompt_callbackfn(c->prompt_data, NULL) == 0) 1140 status_prompt_clear(c); 1141 break; 1142 case MODEKEY_OTHER: 1143 if ((key & 0xff00) != 0 || key < 32 || key == 127) 1144 break; 1145 c->prompt_buffer = xrealloc(c->prompt_buffer, 1, size + 2); 1146 1147 if (c->prompt_index == size) { 1148 c->prompt_buffer[c->prompt_index++] = key; 1149 c->prompt_buffer[c->prompt_index] = '\0'; 1150 } else { 1151 memmove(c->prompt_buffer + c->prompt_index + 1, 1152 c->prompt_buffer + c->prompt_index, 1153 size + 1 - c->prompt_index); 1154 c->prompt_buffer[c->prompt_index++] = key; 1155 } 1156 1157 if (c->prompt_flags & PROMPT_SINGLE) { 1158 if (c->prompt_callbackfn( 1159 c->prompt_data, c->prompt_buffer) == 0) 1160 status_prompt_clear(c); 1161 } 1162 1163 c->flags |= CLIENT_STATUS; 1164 break; 1165 default: 1166 break; 1167 } 1168 } 1169 1170 /* Get previous line from the history. */ 1171 const char * 1172 status_prompt_up_history(u_int *idx) 1173 { 1174 u_int size; 1175 1176 /* 1177 * History runs from 0 to size - 1. 1178 * 1179 * Index is from 0 to size. Zero is empty. 1180 */ 1181 1182 size = ARRAY_LENGTH(&status_prompt_history); 1183 if (size == 0 || *idx == size) 1184 return (NULL); 1185 (*idx)++; 1186 return (ARRAY_ITEM(&status_prompt_history, size - *idx)); 1187 } 1188 1189 /* Get next line from the history. */ 1190 const char * 1191 status_prompt_down_history(u_int *idx) 1192 { 1193 u_int size; 1194 1195 size = ARRAY_LENGTH(&status_prompt_history); 1196 if (size == 0 || *idx == 0) 1197 return (""); 1198 (*idx)--; 1199 if (*idx == 0) 1200 return (""); 1201 return (ARRAY_ITEM(&status_prompt_history, size - *idx)); 1202 } 1203 1204 /* Add line to the history. */ 1205 void 1206 status_prompt_add_history(const char *line) 1207 { 1208 u_int size; 1209 1210 size = ARRAY_LENGTH(&status_prompt_history); 1211 if (size > 0 && strcmp(ARRAY_LAST(&status_prompt_history), line) == 0) 1212 return; 1213 1214 if (size == PROMPT_HISTORY) { 1215 xfree(ARRAY_FIRST(&status_prompt_history)); 1216 ARRAY_REMOVE(&status_prompt_history, 0); 1217 } 1218 1219 ARRAY_ADD(&status_prompt_history, xstrdup(line)); 1220 } 1221 1222 /* Complete word. */ 1223 char * 1224 status_prompt_complete(const char *s) 1225 { 1226 const struct cmd_entry **cmdent; 1227 const struct options_table_entry *oe; 1228 ARRAY_DECL(, const char *) list; 1229 char *prefix, *s2; 1230 u_int i; 1231 size_t j; 1232 1233 if (*s == '\0') 1234 return (NULL); 1235 1236 /* First, build a list of all the possible matches. */ 1237 ARRAY_INIT(&list); 1238 for (cmdent = cmd_table; *cmdent != NULL; cmdent++) { 1239 if (strncmp((*cmdent)->name, s, strlen(s)) == 0) 1240 ARRAY_ADD(&list, (*cmdent)->name); 1241 } 1242 for (oe = server_options_table; oe->name != NULL; oe++) { 1243 if (strncmp(oe->name, s, strlen(s)) == 0) 1244 ARRAY_ADD(&list, oe->name); 1245 } 1246 for (oe = session_options_table; oe->name != NULL; oe++) { 1247 if (strncmp(oe->name, s, strlen(s)) == 0) 1248 ARRAY_ADD(&list, oe->name); 1249 } 1250 for (oe = window_options_table; oe->name != NULL; oe++) { 1251 if (strncmp(oe->name, s, strlen(s)) == 0) 1252 ARRAY_ADD(&list, oe->name); 1253 } 1254 1255 /* If none, bail now. */ 1256 if (ARRAY_LENGTH(&list) == 0) { 1257 ARRAY_FREE(&list); 1258 return (NULL); 1259 } 1260 1261 /* If an exact match, return it, with a trailing space. */ 1262 if (ARRAY_LENGTH(&list) == 1) { 1263 xasprintf(&s2, "%s ", ARRAY_FIRST(&list)); 1264 ARRAY_FREE(&list); 1265 return (s2); 1266 } 1267 1268 /* Now loop through the list and find the longest common prefix. */ 1269 prefix = xstrdup(ARRAY_FIRST(&list)); 1270 for (i = 1; i < ARRAY_LENGTH(&list); i++) { 1271 s = ARRAY_ITEM(&list, i); 1272 1273 j = strlen(s); 1274 if (j > strlen(prefix)) 1275 j = strlen(prefix); 1276 for (; j > 0; j--) { 1277 if (prefix[j - 1] != s[j - 1]) 1278 prefix[j - 1] = '\0'; 1279 } 1280 } 1281 1282 ARRAY_FREE(&list); 1283 return (prefix); 1284 } 1285