status.c revision 1.76
1/* $OpenBSD: status.c,v 1.76 2011/07/02 21:05:44 nicm 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 32char *status_redraw_get_left( 33 struct client *, time_t, int, struct grid_cell *, size_t *); 34char *status_redraw_get_right( 35 struct client *, time_t, int, struct grid_cell *, size_t *); 36char *status_find_job(struct client *, char **); 37void status_job_free(void *); 38void status_job_callback(struct job *); 39char *status_print( 40 struct client *, struct winlink *, time_t, struct grid_cell *); 41void status_replace1(struct client *, struct session *, struct winlink *, 42 struct window_pane *, char **, char **, char *, size_t, int); 43void status_message_callback(int, short, void *); 44 45const char *status_prompt_up_history(u_int *); 46const char *status_prompt_down_history(u_int *); 47void status_prompt_add_history(const char *); 48char *status_prompt_complete(const char *); 49 50/* Status prompt history. */ 51ARRAY_DECL(, char *) status_prompt_history = ARRAY_INITIALIZER; 52 53/* Status output tree. */ 54RB_GENERATE(status_out_tree, status_out, entry, status_out_cmp); 55 56/* Output tree comparison function. */ 57int 58status_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. */ 64char * 65status_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. */ 94char * 95status_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. */ 124void 125status_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. */ 141int 142status_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 295draw: 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 352out: 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 #). */ 367void 368status_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 456do_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 472skip_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. */ 484char * 485status_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. */ 515char * 516status_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. */ 578void 579status_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. */ 597void 598status_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. */ 609void 610status_job_free(void *data) 611{ 612 struct client *c = data; 613 614 c->references--; 615} 616 617/* Job has finished: save its result. */ 618void 619status_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. */ 649char * 650status_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. */ 699void printflike2 700status_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. */ 747void 748status_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 */ 764void 765status_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. */ 773int 774status_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. */ 817void 818status_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 = xstrdup(msg); 828 829 if (input != NULL) 830 c->prompt_buffer = xstrdup(input); 831 else 832 c->prompt_buffer = xstrdup(""); 833 c->prompt_index = strlen(c->prompt_buffer); 834 835 c->prompt_callbackfn = callbackfn; 836 c->prompt_freefn = freefn; 837 c->prompt_data = data; 838 839 c->prompt_hindex = 0; 840 841 c->prompt_flags = flags; 842 843 keys = options_get_number(&c->session->options, "status-keys"); 844 if (keys == MODEKEY_EMACS) 845 mode_key_init(&c->prompt_mdata, &mode_key_tree_emacs_edit); 846 else 847 mode_key_init(&c->prompt_mdata, &mode_key_tree_vi_edit); 848 849 c->tty.flags |= (TTY_NOCURSOR|TTY_FREEZE); 850 c->flags |= CLIENT_STATUS; 851} 852 853/* Remove status line prompt. */ 854void 855status_prompt_clear(struct client *c) 856{ 857 if (c->prompt_string == NULL) 858 return; 859 860 if (c->prompt_freefn != NULL && c->prompt_data != NULL) 861 c->prompt_freefn(c->prompt_data); 862 863 xfree(c->prompt_string); 864 c->prompt_string = NULL; 865 866 xfree(c->prompt_buffer); 867 c->prompt_buffer = NULL; 868 869 c->tty.flags &= ~(TTY_NOCURSOR|TTY_FREEZE); 870 c->flags |= CLIENT_REDRAW; /* screen was frozen and may have changed */ 871 872 screen_reinit(&c->status); 873} 874 875/* Update status line prompt with a new prompt string. */ 876void 877status_prompt_update(struct client *c, const char *msg, const char *input) 878{ 879 xfree(c->prompt_string); 880 c->prompt_string = xstrdup(msg); 881 882 xfree(c->prompt_buffer); 883 if (input != NULL) 884 c->prompt_buffer = xstrdup(input); 885 else 886 c->prompt_buffer = xstrdup(""); 887 c->prompt_index = strlen(c->prompt_buffer); 888 889 c->prompt_hindex = 0; 890 891 c->flags |= CLIENT_STATUS; 892} 893 894/* Draw client prompt on status line of present else on last line. */ 895int 896status_prompt_redraw(struct client *c) 897{ 898 struct screen_write_ctx ctx; 899 struct session *s = c->session; 900 struct screen old_status; 901 size_t i, size, left, len, off; 902 struct grid_cell gc, *gcp; 903 int utf8flag; 904 905 if (c->tty.sx == 0 || c->tty.sy == 0) 906 return (0); 907 memcpy(&old_status, &c->status, sizeof old_status); 908 screen_init(&c->status, c->tty.sx, 1, 0); 909 910 utf8flag = options_get_number(&s->options, "status-utf8"); 911 912 len = screen_write_strlen(utf8flag, "%s", c->prompt_string); 913 if (len > c->tty.sx) 914 len = c->tty.sx; 915 off = 0; 916 917 memcpy(&gc, &grid_default_cell, sizeof gc); 918 colour_set_fg(&gc, options_get_number(&s->options, "message-fg")); 919 colour_set_bg(&gc, options_get_number(&s->options, "message-bg")); 920 gc.attr |= options_get_number(&s->options, "message-attr"); 921 922 screen_write_start(&ctx, NULL, &c->status); 923 924 screen_write_cursormove(&ctx, 0, 0); 925 screen_write_nputs(&ctx, len, &gc, utf8flag, "%s", c->prompt_string); 926 927 left = c->tty.sx - len; 928 if (left != 0) { 929 size = screen_write_strlen(utf8flag, "%s", c->prompt_buffer); 930 if (c->prompt_index >= left) { 931 off = c->prompt_index - left + 1; 932 if (c->prompt_index == size) 933 left--; 934 size = left; 935 } 936 screen_write_nputs( 937 &ctx, left, &gc, utf8flag, "%s", c->prompt_buffer + off); 938 939 for (i = len + size; i < c->tty.sx; i++) 940 screen_write_putc(&ctx, &gc, ' '); 941 } 942 943 screen_write_stop(&ctx); 944 945 /* Apply fake cursor. */ 946 off = len + c->prompt_index - off; 947 gcp = grid_view_get_cell(c->status.grid, off, 0); 948 gcp->attr ^= GRID_ATTR_REVERSE; 949 950 if (grid_compare(c->status.grid, old_status.grid) == 0) { 951 screen_free(&old_status); 952 return (0); 953 } 954 screen_free(&old_status); 955 return (1); 956} 957 958/* Handle keys in prompt. */ 959void 960status_prompt_key(struct client *c, int key) 961{ 962 struct paste_buffer *pb; 963 char *s, *first, *last, word[64], swapc; 964 const char *histstr; 965 u_char ch; 966 size_t size, n, off, idx; 967 968 size = strlen(c->prompt_buffer); 969 switch (mode_key_lookup(&c->prompt_mdata, key)) { 970 case MODEKEYEDIT_CURSORLEFT: 971 if (c->prompt_index > 0) { 972 c->prompt_index--; 973 c->flags |= CLIENT_STATUS; 974 } 975 break; 976 case MODEKEYEDIT_SWITCHMODEAPPEND: 977 case MODEKEYEDIT_CURSORRIGHT: 978 if (c->prompt_index < size) { 979 c->prompt_index++; 980 c->flags |= CLIENT_STATUS; 981 } 982 break; 983 case MODEKEYEDIT_STARTOFLINE: 984 if (c->prompt_index != 0) { 985 c->prompt_index = 0; 986 c->flags |= CLIENT_STATUS; 987 } 988 break; 989 case MODEKEYEDIT_ENDOFLINE: 990 if (c->prompt_index != size) { 991 c->prompt_index = size; 992 c->flags |= CLIENT_STATUS; 993 } 994 break; 995 case MODEKEYEDIT_COMPLETE: 996 if (*c->prompt_buffer == '\0') 997 break; 998 999 idx = c->prompt_index; 1000 if (idx != 0) 1001 idx--; 1002 1003 /* Find the word we are in. */ 1004 first = c->prompt_buffer + idx; 1005 while (first > c->prompt_buffer && *first != ' ') 1006 first--; 1007 while (*first == ' ') 1008 first++; 1009 last = c->prompt_buffer + idx; 1010 while (*last != '\0' && *last != ' ') 1011 last++; 1012 while (*last == ' ') 1013 last--; 1014 if (*last != '\0') 1015 last++; 1016 if (last <= first || 1017 ((size_t) (last - first)) > (sizeof word) - 1) 1018 break; 1019 memcpy(word, first, last - first); 1020 word[last - first] = '\0'; 1021 1022 /* And try to complete it. */ 1023 if ((s = status_prompt_complete(word)) == NULL) 1024 break; 1025 1026 /* Trim out word. */ 1027 n = size - (last - c->prompt_buffer) + 1; /* with \0 */ 1028 memmove(first, last, n); 1029 size -= last - first; 1030 1031 /* Insert the new word. */ 1032 size += strlen(s); 1033 off = first - c->prompt_buffer; 1034 c->prompt_buffer = xrealloc(c->prompt_buffer, 1, size + 1); 1035 first = c->prompt_buffer + off; 1036 memmove(first + strlen(s), first, n); 1037 memcpy(first, s, strlen(s)); 1038 1039 c->prompt_index = (first - c->prompt_buffer) + strlen(s); 1040 xfree(s); 1041 1042 c->flags |= CLIENT_STATUS; 1043 break; 1044 case MODEKEYEDIT_BACKSPACE: 1045 if (c->prompt_index != 0) { 1046 if (c->prompt_index == size) 1047 c->prompt_buffer[--c->prompt_index] = '\0'; 1048 else { 1049 memmove(c->prompt_buffer + c->prompt_index - 1, 1050 c->prompt_buffer + c->prompt_index, 1051 size + 1 - c->prompt_index); 1052 c->prompt_index--; 1053 } 1054 c->flags |= CLIENT_STATUS; 1055 } 1056 break; 1057 case MODEKEYEDIT_DELETE: 1058 if (c->prompt_index != size) { 1059 memmove(c->prompt_buffer + c->prompt_index, 1060 c->prompt_buffer + c->prompt_index + 1, 1061 size + 1 - c->prompt_index); 1062 c->flags |= CLIENT_STATUS; 1063 } 1064 break; 1065 case MODEKEYEDIT_DELETELINE: 1066 *c->prompt_buffer = '\0'; 1067 c->prompt_index = 0; 1068 c->flags |= CLIENT_STATUS; 1069 break; 1070 case MODEKEYEDIT_DELETETOENDOFLINE: 1071 if (c->prompt_index < size) { 1072 c->prompt_buffer[c->prompt_index] = '\0'; 1073 c->flags |= CLIENT_STATUS; 1074 } 1075 break; 1076 case MODEKEYEDIT_HISTORYUP: 1077 histstr = status_prompt_up_history(&c->prompt_hindex); 1078 if (histstr == NULL) 1079 break; 1080 xfree(c->prompt_buffer); 1081 c->prompt_buffer = xstrdup(histstr); 1082 c->prompt_index = strlen(c->prompt_buffer); 1083 c->flags |= CLIENT_STATUS; 1084 break; 1085 case MODEKEYEDIT_HISTORYDOWN: 1086 histstr = status_prompt_down_history(&c->prompt_hindex); 1087 if (histstr == NULL) 1088 break; 1089 xfree(c->prompt_buffer); 1090 c->prompt_buffer = xstrdup(histstr); 1091 c->prompt_index = strlen(c->prompt_buffer); 1092 c->flags |= CLIENT_STATUS; 1093 break; 1094 case MODEKEYEDIT_PASTE: 1095 if ((pb = paste_get_top(&global_buffers)) == NULL) 1096 break; 1097 for (n = 0; n < pb->size; n++) { 1098 ch = (u_char) pb->data[n]; 1099 if (ch < 32 || ch == 127) 1100 break; 1101 } 1102 1103 c->prompt_buffer = xrealloc(c->prompt_buffer, 1, size + n + 1); 1104 if (c->prompt_index == size) { 1105 memcpy(c->prompt_buffer + c->prompt_index, pb->data, n); 1106 c->prompt_index += n; 1107 c->prompt_buffer[c->prompt_index] = '\0'; 1108 } else { 1109 memmove(c->prompt_buffer + c->prompt_index + n, 1110 c->prompt_buffer + c->prompt_index, 1111 size + 1 - c->prompt_index); 1112 memcpy(c->prompt_buffer + c->prompt_index, pb->data, n); 1113 c->prompt_index += n; 1114 } 1115 1116 c->flags |= CLIENT_STATUS; 1117 break; 1118 case MODEKEYEDIT_TRANSPOSECHARS: 1119 idx = c->prompt_index; 1120 if (idx < size) 1121 idx++; 1122 if (idx >= 2) { 1123 swapc = c->prompt_buffer[idx - 2]; 1124 c->prompt_buffer[idx - 2] = c->prompt_buffer[idx - 1]; 1125 c->prompt_buffer[idx - 1] = swapc; 1126 c->prompt_index = idx; 1127 c->flags |= CLIENT_STATUS; 1128 } 1129 break; 1130 case MODEKEYEDIT_ENTER: 1131 if (*c->prompt_buffer != '\0') 1132 status_prompt_add_history(c->prompt_buffer); 1133 if (c->prompt_callbackfn(c->prompt_data, c->prompt_buffer) == 0) 1134 status_prompt_clear(c); 1135 break; 1136 case MODEKEYEDIT_CANCEL: 1137 if (c->prompt_callbackfn(c->prompt_data, NULL) == 0) 1138 status_prompt_clear(c); 1139 break; 1140 case MODEKEY_OTHER: 1141 if ((key & 0xff00) != 0 || key < 32 || key == 127) 1142 break; 1143 c->prompt_buffer = xrealloc(c->prompt_buffer, 1, size + 2); 1144 1145 if (c->prompt_index == size) { 1146 c->prompt_buffer[c->prompt_index++] = key; 1147 c->prompt_buffer[c->prompt_index] = '\0'; 1148 } else { 1149 memmove(c->prompt_buffer + c->prompt_index + 1, 1150 c->prompt_buffer + c->prompt_index, 1151 size + 1 - c->prompt_index); 1152 c->prompt_buffer[c->prompt_index++] = key; 1153 } 1154 1155 if (c->prompt_flags & PROMPT_SINGLE) { 1156 if (c->prompt_callbackfn( 1157 c->prompt_data, c->prompt_buffer) == 0) 1158 status_prompt_clear(c); 1159 } 1160 1161 c->flags |= CLIENT_STATUS; 1162 break; 1163 default: 1164 break; 1165 } 1166} 1167 1168/* Get previous line from the history. */ 1169const char * 1170status_prompt_up_history(u_int *idx) 1171{ 1172 u_int size; 1173 1174 /* 1175 * History runs from 0 to size - 1. 1176 * 1177 * Index is from 0 to size. Zero is empty. 1178 */ 1179 1180 size = ARRAY_LENGTH(&status_prompt_history); 1181 if (size == 0 || *idx == size) 1182 return (NULL); 1183 (*idx)++; 1184 return (ARRAY_ITEM(&status_prompt_history, size - *idx)); 1185} 1186 1187/* Get next line from the history. */ 1188const char * 1189status_prompt_down_history(u_int *idx) 1190{ 1191 u_int size; 1192 1193 size = ARRAY_LENGTH(&status_prompt_history); 1194 if (size == 0 || *idx == 0) 1195 return (""); 1196 (*idx)--; 1197 if (*idx == 0) 1198 return (""); 1199 return (ARRAY_ITEM(&status_prompt_history, size - *idx)); 1200} 1201 1202/* Add line to the history. */ 1203void 1204status_prompt_add_history(const char *line) 1205{ 1206 u_int size; 1207 1208 size = ARRAY_LENGTH(&status_prompt_history); 1209 if (size > 0 && strcmp(ARRAY_LAST(&status_prompt_history), line) == 0) 1210 return; 1211 1212 if (size == PROMPT_HISTORY) { 1213 xfree(ARRAY_FIRST(&status_prompt_history)); 1214 ARRAY_REMOVE(&status_prompt_history, 0); 1215 } 1216 1217 ARRAY_ADD(&status_prompt_history, xstrdup(line)); 1218} 1219 1220/* Complete word. */ 1221char * 1222status_prompt_complete(const char *s) 1223{ 1224 const struct cmd_entry **cmdent; 1225 const struct options_table_entry *oe; 1226 ARRAY_DECL(, const char *) list; 1227 char *prefix, *s2; 1228 u_int i; 1229 size_t j; 1230 1231 if (*s == '\0') 1232 return (NULL); 1233 1234 /* First, build a list of all the possible matches. */ 1235 ARRAY_INIT(&list); 1236 for (cmdent = cmd_table; *cmdent != NULL; cmdent++) { 1237 if (strncmp((*cmdent)->name, s, strlen(s)) == 0) 1238 ARRAY_ADD(&list, (*cmdent)->name); 1239 } 1240 for (oe = server_options_table; oe->name != NULL; oe++) { 1241 if (strncmp(oe->name, s, strlen(s)) == 0) 1242 ARRAY_ADD(&list, oe->name); 1243 } 1244 for (oe = session_options_table; oe->name != NULL; oe++) { 1245 if (strncmp(oe->name, s, strlen(s)) == 0) 1246 ARRAY_ADD(&list, oe->name); 1247 } 1248 for (oe = window_options_table; oe->name != NULL; oe++) { 1249 if (strncmp(oe->name, s, strlen(s)) == 0) 1250 ARRAY_ADD(&list, oe->name); 1251 } 1252 1253 /* If none, bail now. */ 1254 if (ARRAY_LENGTH(&list) == 0) { 1255 ARRAY_FREE(&list); 1256 return (NULL); 1257 } 1258 1259 /* If an exact match, return it, with a trailing space. */ 1260 if (ARRAY_LENGTH(&list) == 1) { 1261 xasprintf(&s2, "%s ", ARRAY_FIRST(&list)); 1262 ARRAY_FREE(&list); 1263 return (s2); 1264 } 1265 1266 /* Now loop through the list and find the longest common prefix. */ 1267 prefix = xstrdup(ARRAY_FIRST(&list)); 1268 for (i = 1; i < ARRAY_LENGTH(&list); i++) { 1269 s = ARRAY_ITEM(&list, i); 1270 1271 j = strlen(s); 1272 if (j > strlen(prefix)) 1273 j = strlen(prefix); 1274 for (; j > 0; j--) { 1275 if (prefix[j - 1] != s[j - 1]) 1276 prefix[j - 1] = '\0'; 1277 } 1278 } 1279 1280 ARRAY_FREE(&list); 1281 return (prefix); 1282} 1283