Annotation of src/usr.bin/tmux/status.c, Revision 1.72
1.72 ! nicm 1: /* $OpenBSD: status.c,v 1.71 2011/01/26 01:54:56 nicm Exp $ */
1.1 nicm 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:
1.48 nicm 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 *);
1.71 nicm 36: char *status_find_job(struct client *, char **);
37: void status_job_free(void *);
1.38 nicm 38: void status_job_callback(struct job *);
1.47 nicm 39: char *status_print(
1.55 nicm 40: struct client *, struct winlink *, time_t, struct grid_cell *);
1.72 ! nicm 41: void status_replace1(struct client *, struct session *, struct winlink *,
! 42: struct window_pane *, char **, char **, char *, size_t, int);
1.42 nicm 43: void status_message_callback(int, short, void *);
1.1 nicm 44:
1.65 nicm 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 *);
1.1 nicm 48: char *status_prompt_complete(const char *);
49:
1.65 nicm 50: /* Status prompt history. */
51: ARRAY_DECL(, char *) status_prompt_history = ARRAY_INITIALIZER;
52:
1.71 nicm 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:
1.48 nicm 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:
1.72 ! nicm 83: left = status_replace(c, NULL,
! 84: NULL, NULL, options_get_string(&s->options, "status-left"), t, 1);
1.48 nicm 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:
1.72 ! nicm 113: right = status_replace(c, NULL,
! 114: NULL, NULL, options_get_string(&s->options, "status-right"), t, 1);
1.48 nicm 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:
1.1 nicm 123: /* Draw status for client on the last lines of given context. */
124: int
125: status_redraw(struct client *c)
126: {
1.48 nicm 127: struct screen_write_ctx ctx;
128: struct session *s = c->session;
129: struct winlink *wl;
130: struct screen old_status, window_list;
131: struct grid_cell stdgc, lgc, rgc, gc;
132: time_t t;
133: char *left, *right;
134: u_int offset, needed;
135: u_int wlstart, wlwidth, wlavailable, wloffset, wlsize;
136: size_t llen, rlen;
137: int larrow, rarrow, utf8flag;
1.1 nicm 138:
1.49 nicm 139: /* No status line? */
1.7 nicm 140: if (c->tty.sy == 0 || !options_get_number(&s->options, "status"))
141: return (1);
1.48 nicm 142: left = right = NULL;
1.7 nicm 143: larrow = rarrow = 0;
1.1 nicm 144:
1.48 nicm 145: /* Update status timer. */
1.1 nicm 146: if (gettimeofday(&c->status_timer, NULL) != 0)
1.34 nicm 147: fatal("gettimeofday failed");
1.48 nicm 148: t = c->status_timer.tv_sec;
149:
150: /* Set up default colour. */
1.1 nicm 151: memcpy(&stdgc, &grid_default_cell, sizeof gc);
1.33 nicm 152: colour_set_fg(&stdgc, options_get_number(&s->options, "status-fg"));
153: colour_set_bg(&stdgc, options_get_number(&s->options, "status-bg"));
1.1 nicm 154: stdgc.attr |= options_get_number(&s->options, "status-attr");
155:
1.48 nicm 156: /* Create the target screen. */
157: memcpy(&old_status, &c->status, sizeof old_status);
158: screen_init(&c->status, c->tty.sx, 1, 0);
159: screen_write_start(&ctx, NULL, &c->status);
160: for (offset = 0; offset < c->tty.sx; offset++)
161: screen_write_putc(&ctx, &stdgc, ' ');
162: screen_write_stop(&ctx);
163:
164: /* If the height is one line, blank status line. */
165: if (c->tty.sy <= 1)
166: goto out;
1.1 nicm 167:
1.48 nicm 168: /* Get UTF-8 flag. */
1.3 nicm 169: utf8flag = options_get_number(&s->options, "status-utf8");
170:
1.48 nicm 171: /* Work out left and right strings. */
172: memcpy(&lgc, &stdgc, sizeof lgc);
173: left = status_redraw_get_left(c, t, utf8flag, &lgc, &llen);
174: memcpy(&rgc, &stdgc, sizeof rgc);
175: right = status_redraw_get_right(c, t, utf8flag, &rgc, &rlen);
1.1 nicm 176:
177: /*
1.48 nicm 178: * Figure out how much space we have for the window list. If there
179: * isn't enough space, just show a blank status line.
1.1 nicm 180: */
1.55 nicm 181: needed = 0;
1.1 nicm 182: if (llen != 0)
1.48 nicm 183: needed += llen + 1;
1.1 nicm 184: if (rlen != 0)
1.48 nicm 185: needed += rlen + 1;
186: if (c->tty.sx == 0 || c->tty.sx <= needed)
187: goto out;
188: wlavailable = c->tty.sx - needed;
1.1 nicm 189:
1.48 nicm 190: /* Calculate the total size needed for the window list. */
191: wlstart = wloffset = wlwidth = 0;
1.1 nicm 192: RB_FOREACH(wl, winlinks, &s->windows) {
1.48 nicm 193: if (wl->status_text != NULL)
194: xfree(wl->status_text);
195: memcpy(&wl->status_cell, &stdgc, sizeof wl->status_cell);
196: wl->status_text = status_print(c, wl, t, &wl->status_cell);
1.55 nicm 197: wl->status_width =
1.48 nicm 198: screen_write_cstrlen(utf8flag, "%s", wl->status_text);
199:
1.1 nicm 200: if (wl == s->curw)
1.48 nicm 201: wloffset = wlwidth;
202: wlwidth += wl->status_width + 1;
203: }
204:
205: /* Create a new screen for the window list. */
206: screen_init(&window_list, wlwidth, 1, 0);
207:
208: /* And draw the window list into it. */
209: screen_write_start(&ctx, NULL, &window_list);
210: RB_FOREACH(wl, winlinks, &s->windows) {
1.55 nicm 211: screen_write_cnputs(&ctx,
1.48 nicm 212: -1, &wl->status_cell, utf8flag, "%s", wl->status_text);
213: screen_write_putc(&ctx, &stdgc, ' ');
1.1 nicm 214: }
1.48 nicm 215: screen_write_stop(&ctx);
1.1 nicm 216:
1.48 nicm 217: /* If there is enough space for the total width, skip to draw now. */
218: if (wlwidth <= wlavailable)
1.1 nicm 219: goto draw;
220:
221: /* Find size of current window text. */
1.48 nicm 222: wlsize = s->curw->status_width;
1.1 nicm 223:
224: /*
1.48 nicm 225: * If the current window is already on screen, good to draw from the
1.1 nicm 226: * start and just leave off the end.
227: */
1.48 nicm 228: if (wloffset + wlsize < wlavailable) {
229: if (wlavailable > 0) {
230: rarrow = 1;
231: wlavailable--;
232: }
233: wlwidth = wlavailable;
234: } else {
235: /*
236: * Work out how many characters we need to omit from the
237: * start. There are wlavailable characters to fill, and
238: * wloffset + wlsize must be the last. So, the start character
239: * is wloffset + wlsize - wlavailable.
240: */
241: if (wlavailable > 0) {
242: larrow = 1;
243: wlavailable--;
244: }
1.55 nicm 245:
1.48 nicm 246: wlstart = wloffset + wlsize - wlavailable;
247: if (wlavailable > 0 && wlwidth > wlstart + wlavailable + 1) {
1.1 nicm 248: rarrow = 1;
1.48 nicm 249: wlstart++;
250: wlavailable--;
1.1 nicm 251: }
1.48 nicm 252: wlwidth = wlavailable;
253: }
1.1 nicm 254:
1.48 nicm 255: /* Bail if anything is now too small too. */
256: if (wlwidth == 0 || wlavailable == 0) {
257: screen_free(&window_list);
258: goto out;
1.1 nicm 259: }
260:
261: /*
1.48 nicm 262: * Now the start position is known, work out the state of the left and
263: * right arrows.
1.1 nicm 264: */
265: offset = 0;
266: RB_FOREACH(wl, winlinks, &s->windows) {
1.63 nicm 267: if (wl->flags & WINLINK_ALERTFLAGS &&
268: larrow == 1 && offset < wlstart)
269: larrow = -1;
1.1 nicm 270:
1.48 nicm 271: offset += wl->status_width;
1.1 nicm 272:
1.63 nicm 273: if (wl->flags & WINLINK_ALERTFLAGS &&
274: rarrow == 1 && offset > wlstart + wlwidth)
275: rarrow = -1;
1.1 nicm 276: }
277:
1.48 nicm 278: draw:
1.55 nicm 279: /* Begin drawing. */
1.48 nicm 280: screen_write_start(&ctx, NULL, &c->status);
1.1 nicm 281:
1.48 nicm 282: /* Draw the left string and arrow. */
283: screen_write_cursormove(&ctx, 0, 0);
284: if (llen != 0) {
285: screen_write_cnputs(&ctx, llen, &lgc, utf8flag, "%s", left);
1.5 nicm 286: screen_write_putc(&ctx, &stdgc, ' ');
1.1 nicm 287: }
288: if (larrow != 0) {
289: memcpy(&gc, &stdgc, sizeof gc);
290: if (larrow == -1)
291: gc.attr ^= GRID_ATTR_REVERSE;
292: screen_write_putc(&ctx, &gc, '<');
293: }
1.48 nicm 294:
295: /* Draw the right string and arrow. */
1.1 nicm 296: if (rarrow != 0) {
1.48 nicm 297: screen_write_cursormove(&ctx, c->tty.sx - rlen - 2, 0);
1.1 nicm 298: memcpy(&gc, &stdgc, sizeof gc);
299: if (rarrow == -1)
300: gc.attr ^= GRID_ATTR_REVERSE;
301: screen_write_putc(&ctx, &gc, '>');
1.48 nicm 302: } else
303: screen_write_cursormove(&ctx, c->tty.sx - rlen - 1, 0);
304: if (rlen != 0) {
305: screen_write_putc(&ctx, &stdgc, ' ');
306: screen_write_cnputs(&ctx, rlen, &rgc, utf8flag, "%s", right);
1.1 nicm 307: }
308:
1.48 nicm 309: /* Figure out the offset for the window list. */
1.58 nicm 310: if (llen != 0)
311: wloffset = llen + 1;
312: else
313: wloffset = 0;
1.48 nicm 314: if (wlwidth < wlavailable) {
315: switch (options_get_number(&s->options, "status-justify")) {
316: case 1: /* centered */
1.58 nicm 317: wloffset += (wlavailable - wlwidth) / 2;
1.48 nicm 318: break;
319: case 2: /* right */
1.58 nicm 320: wloffset += (wlavailable - wlwidth);
1.48 nicm 321: break;
322: }
323: }
324: if (larrow != 0)
325: wloffset++;
326:
327: /* Copy the window list. */
328: screen_write_cursormove(&ctx, wloffset, 0);
329: screen_write_copy(&ctx, &window_list, wlstart, 0, wlwidth, 1);
1.55 nicm 330: screen_free(&window_list);
1.1 nicm 331:
1.48 nicm 332: screen_write_stop(&ctx);
1.1 nicm 333:
334: out:
335: if (left != NULL)
336: xfree(left);
337: if (right != NULL)
338: xfree(right);
339:
340: if (grid_compare(c->status.grid, old_status.grid) == 0) {
341: screen_free(&old_status);
342: return (0);
343: }
344: screen_free(&old_status);
345: return (1);
346: }
347:
1.46 nicm 348: /* Replace a single special sequence (prefixed by #). */
349: void
1.72 ! nicm 350: status_replace1(struct client *c, struct session *s, struct winlink *wl,
! 351: struct window_pane *wp, char **iptr, char **optr, char *out,
! 352: size_t outsize, int jobsflag)
! 353: {
! 354: char ch, tmp[256], *ptr, *endptr, *freeptr;
! 355: size_t ptrlen;
! 356: long limit;
1.46 nicm 357:
1.72 ! nicm 358: if (s == NULL)
! 359: s = c->session;
1.47 nicm 360: if (wl == NULL)
361: wl = s->curw;
1.72 ! nicm 362: if (wp == NULL)
! 363: wp = wl->window->active;
1.47 nicm 364:
1.46 nicm 365: errno = 0;
366: limit = strtol(*iptr, &endptr, 10);
367: if ((limit == 0 && errno != EINVAL) ||
368: (limit == LONG_MIN && errno != ERANGE) ||
1.55 nicm 369: (limit == LONG_MAX && errno != ERANGE) ||
1.46 nicm 370: limit != 0)
371: *iptr = endptr;
372: if (limit <= 0)
373: limit = LONG_MAX;
374:
375: freeptr = NULL;
376:
377: switch (*(*iptr)++) {
378: case '(':
379: if (!jobsflag) {
380: ch = ')';
381: goto skip_to;
382: }
1.71 nicm 383: if ((ptr = status_find_job(c, iptr)) == NULL)
1.46 nicm 384: return;
385: goto do_replace;
1.72 ! nicm 386: case 'D':
! 387: xsnprintf(tmp, sizeof tmp, "%%%u", wp->id);
! 388: ptr = tmp;
! 389: goto do_replace;
1.46 nicm 390: case 'H':
391: if (gethostname(tmp, sizeof tmp) != 0)
392: fatal("gethostname failed");
393: ptr = tmp;
394: goto do_replace;
395: case 'I':
396: xsnprintf(tmp, sizeof tmp, "%d", wl->idx);
397: ptr = tmp;
398: goto do_replace;
399: case 'P':
1.72 ! nicm 400: xsnprintf(
! 401: tmp, sizeof tmp, "%u", window_pane_index(wl->window, wp));
1.46 nicm 402: ptr = tmp;
403: goto do_replace;
404: case 'S':
405: ptr = s->name;
406: goto do_replace;
407: case 'T':
1.72 ! nicm 408: ptr = wp->base.title;
1.46 nicm 409: goto do_replace;
410: case 'W':
411: ptr = wl->window->name;
412: goto do_replace;
1.47 nicm 413: case 'F':
1.67 nicm 414: ptr = window_printable_flags(s, wl);
415: freeptr = ptr;
1.47 nicm 416: goto do_replace;
1.46 nicm 417: case '[':
1.55 nicm 418: /*
1.46 nicm 419: * Embedded style, handled at display time. Leave present and
420: * skip input until ].
421: */
422: ch = ']';
423: goto skip_to;
424: case '#':
1.49 nicm 425: *(*optr)++ = '#';
1.46 nicm 426: break;
427: }
428:
429: return;
1.55 nicm 430:
1.46 nicm 431: do_replace:
432: ptrlen = strlen(ptr);
433: if ((size_t) limit < ptrlen)
434: ptrlen = limit;
435:
436: if (*optr + ptrlen >= out + outsize - 1)
437: return;
438: while (ptrlen > 0 && *ptr != '\0') {
439: *(*optr)++ = *ptr++;
440: ptrlen--;
441: }
442:
443: if (freeptr != NULL)
444: xfree(freeptr);
445: return;
446:
447: skip_to:
448: *(*optr)++ = '#';
449:
450: (*iptr)--; /* include ch */
451: while (**iptr != ch && **iptr != '\0') {
452: if (*optr >= out + outsize - 1)
453: break;
454: *(*optr)++ = *(*iptr)++;
455: }
456: }
457:
458: /* Replace special sequences in fmt. */
459: char *
1.72 ! nicm 460: status_replace(struct client *c, struct session *s, struct winlink *wl,
! 461: struct window_pane *wp, const char *fmt, time_t t, int jobsflag)
1.46 nicm 462: {
1.1 nicm 463: static char out[BUFSIZ];
1.46 nicm 464: char in[BUFSIZ], ch, *iptr, *optr;
1.47 nicm 465:
1.1 nicm 466: strftime(in, sizeof in, fmt, localtime(&t));
467: in[(sizeof in) - 1] = '\0';
468:
469: iptr = in;
470: optr = out;
471:
472: while (*iptr != '\0') {
473: if (optr >= out + (sizeof out) - 1)
474: break;
1.46 nicm 475: ch = *iptr++;
476:
1.70 nicm 477: if (ch != '#' || *iptr == '\0') {
1.1 nicm 478: *optr++ = ch;
1.46 nicm 479: continue;
1.1 nicm 480: }
1.72 ! nicm 481: status_replace1(
! 482: c, s, wl, wp, &iptr, &optr, out, sizeof out, jobsflag);
1.1 nicm 483: }
484: *optr = '\0';
485:
486: return (xstrdup(out));
487: }
488:
1.46 nicm 489: /* Figure out job name and get its result, starting it off if necessary. */
1.1 nicm 490: char *
1.71 nicm 491: status_find_job(struct client *c, char **iptr)
1.1 nicm 492: {
1.71 nicm 493: struct status_out *so, so_find;
494: char *cmd;
495: int lastesc;
496: size_t len;
1.1 nicm 497:
498: if (**iptr == '\0')
499: return (NULL);
500: if (**iptr == ')') { /* no command given */
501: (*iptr)++;
502: return (NULL);
503: }
504:
505: cmd = xmalloc(strlen(*iptr) + 1);
506: len = 0;
507:
508: lastesc = 0;
509: for (; **iptr != '\0'; (*iptr)++) {
510: if (!lastesc && **iptr == ')')
511: break; /* unescaped ) is the end */
512: if (!lastesc && **iptr == '\\') {
513: lastesc = 1;
514: continue; /* skip \ if not escaped */
515: }
516: lastesc = 0;
517: cmd[len++] = **iptr;
518: }
1.38 nicm 519: if (**iptr == '\0') /* no terminating ) */ {
520: xfree(cmd);
521: return (NULL);
522: }
1.1 nicm 523: (*iptr)++; /* skip final ) */
524: cmd[len] = '\0';
525:
1.71 nicm 526: /* First try in the new tree. */
527: so_find.cmd = cmd;
528: so = RB_FIND(status_out_tree, &c->status_new, &so_find);
529: if (so != NULL && so->out != NULL)
530: return (so->out);
531:
532: /* If not found at all, start the job and add to the tree. */
533: if (so == NULL) {
534: job_run(cmd, status_job_callback, status_job_free, c);
535: c->references++;
536:
537: so = xmalloc(sizeof *so);
538: so->cmd = xstrdup(cmd);
539: so->out = NULL;
540: RB_INSERT(status_out_tree, &c->status_new, so);
541: }
542:
543: /* Lookup in the old tree. */
544: so_find.cmd = cmd;
545: so = RB_FIND(status_out_tree, &c->status_old, &so_find);
546: xfree(cmd);
547: if (so != NULL)
548: return (so->out);
549: return (NULL);
550: }
551:
552: /* Free job tree. */
553: void
554: status_free_jobs(struct status_out_tree *sotree)
555: {
556: struct status_out *so, *so_next;
557:
558: so_next = RB_MIN(status_out_tree, sotree);
559: while (so_next != NULL) {
560: so = so_next;
561: so_next = RB_NEXT(status_out_tree, sotree, so);
562:
563: RB_REMOVE(status_out_tree, sotree, so);
564: if (so->out != NULL)
565: xfree(so->out);
566: xfree(so->cmd);
567: xfree(so);
1.38 nicm 568: }
1.71 nicm 569: }
570:
571: /* Update jobs on status interval. */
572: void
573: status_update_jobs(struct client *c)
574: {
575: /* Free the old tree. */
576: status_free_jobs(&c->status_old);
577:
578: /* Move the new to old. */
579: memcpy(&c->status_old, &c->status_new, sizeof c->status_old);
580: RB_INIT(&c->status_new);
581: }
582:
583: /* Free status job. */
584: void
585: status_job_free(void *data)
586: {
587: struct client *c = data;
588:
589: c->references--;
1.38 nicm 590: }
1.1 nicm 591:
1.46 nicm 592: /* Job has finished: save its result. */
1.38 nicm 593: void
594: status_job_callback(struct job *job)
595: {
1.71 nicm 596: struct client *c = job->data;
597: struct status_out *so, so_find;
598: char *line, *buf;
599: size_t len;
600:
601: if (c->flags & CLIENT_DEAD)
602: return;
603:
604: so_find.cmd = job->cmd;
605: so = RB_FIND(status_out_tree, &c->status_new, &so_find);
606: if (so == NULL || so->out != NULL)
607: return;
1.38 nicm 608:
1.41 nicm 609: buf = NULL;
610: if ((line = evbuffer_readline(job->event->input)) == NULL) {
611: len = EVBUFFER_LENGTH(job->event->input);
612: buf = xmalloc(len + 1);
613: if (len != 0)
614: memcpy(buf, EVBUFFER_DATA(job->event->input), len);
615: buf[len] = '\0';
1.71 nicm 616: } else
617: buf = xstrdup(line);
1.1 nicm 618:
1.71 nicm 619: so->out = buf;
620: server_redraw_client(c);
1.1 nicm 621: }
622:
1.46 nicm 623: /* Return winlink status line entry and adjust gc as necessary. */
1.1 nicm 624: char *
1.47 nicm 625: status_print(
626: struct client *c, struct winlink *wl, time_t t, struct grid_cell *gc)
1.1 nicm 627: {
1.33 nicm 628: struct options *oo = &wl->window->options;
1.47 nicm 629: struct session *s = c->session;
630: const char *fmt;
631: char *text;
1.33 nicm 632: u_char fg, bg, attr;
1.1 nicm 633:
1.33 nicm 634: fg = options_get_number(oo, "window-status-fg");
1.1 nicm 635: if (fg != 8)
1.33 nicm 636: colour_set_fg(gc, fg);
637: bg = options_get_number(oo, "window-status-bg");
1.1 nicm 638: if (bg != 8)
1.33 nicm 639: colour_set_bg(gc, bg);
640: attr = options_get_number(oo, "window-status-attr");
1.1 nicm 641: if (attr != 0)
642: gc->attr = attr;
1.47 nicm 643: fmt = options_get_string(oo, "window-status-format");
1.14 nicm 644: if (wl == s->curw) {
1.33 nicm 645: fg = options_get_number(oo, "window-status-current-fg");
1.14 nicm 646: if (fg != 8)
1.33 nicm 647: colour_set_fg(gc, fg);
648: bg = options_get_number(oo, "window-status-current-bg");
1.14 nicm 649: if (bg != 8)
1.33 nicm 650: colour_set_bg(gc, bg);
651: attr = options_get_number(oo, "window-status-current-attr");
1.14 nicm 652: if (attr != 0)
653: gc->attr = attr;
1.47 nicm 654: fmt = options_get_string(oo, "window-status-current-format");
1.14 nicm 655: }
1.1 nicm 656:
1.63 nicm 657: if (wl->flags & WINLINK_ALERTFLAGS) {
1.62 nicm 658: fg = options_get_number(oo, "window-status-alert-fg");
659: if (fg != 8)
660: colour_set_fg(gc, fg);
661: bg = options_get_number(oo, "window-status-alert-bg");
662: if (bg != 8)
663: colour_set_bg(gc, bg);
664: attr = options_get_number(oo, "window-status-alert-attr");
665: if (attr != 0)
666: gc->attr = attr;
667: }
1.1 nicm 668:
1.72 ! nicm 669: text = status_replace(c, NULL, wl, NULL, fmt, t, 1);
1.1 nicm 670: return (text);
671: }
672:
1.46 nicm 673: /* Set a status line message. */
1.10 nicm 674: void printflike2
675: status_message_set(struct client *c, const char *fmt, ...)
1.1 nicm 676: {
1.44 nicm 677: struct timeval tv;
678: struct session *s = c->session;
679: struct message_entry *msg;
680: va_list ap;
681: int delay;
682: u_int i, limit;
1.1 nicm 683:
1.12 nicm 684: status_prompt_clear(c);
685: status_message_clear(c);
686:
1.28 nicm 687: va_start(ap, fmt);
688: xvasprintf(&c->message_string, fmt, ap);
689: va_end(ap);
690:
1.44 nicm 691: ARRAY_EXPAND(&c->message_log, 1);
692: msg = &ARRAY_LAST(&c->message_log);
693: msg->msg_time = time(NULL);
694: msg->msg = xstrdup(c->message_string);
695:
696: if (s == NULL)
697: limit = 0;
698: else
699: limit = options_get_number(&s->options, "message-limit");
1.50 nicm 700: if (ARRAY_LENGTH(&c->message_log) > limit) {
701: limit = ARRAY_LENGTH(&c->message_log) - limit;
702: for (i = 0; i < limit; i++) {
703: msg = &ARRAY_FIRST(&c->message_log);
704: xfree(msg->msg);
705: ARRAY_REMOVE(&c->message_log, 0);
706: }
1.44 nicm 707: }
708:
1.1 nicm 709: delay = options_get_number(&c->session->options, "display-time");
710: tv.tv_sec = delay / 1000;
711: tv.tv_usec = (delay % 1000) * 1000L;
1.44 nicm 712:
1.42 nicm 713: evtimer_del(&c->message_timer);
714: evtimer_set(&c->message_timer, status_message_callback, c);
715: evtimer_add(&c->message_timer, &tv);
1.1 nicm 716:
717: c->tty.flags |= (TTY_NOCURSOR|TTY_FREEZE);
718: c->flags |= CLIENT_STATUS;
719: }
720:
1.46 nicm 721: /* Clear status line message. */
1.1 nicm 722: void
723: status_message_clear(struct client *c)
724: {
725: if (c->message_string == NULL)
726: return;
727:
728: xfree(c->message_string);
729: c->message_string = NULL;
730:
731: c->tty.flags &= ~(TTY_NOCURSOR|TTY_FREEZE);
1.12 nicm 732: c->flags |= CLIENT_REDRAW; /* screen was frozen and may have changed */
1.7 nicm 733:
734: screen_reinit(&c->status);
1.42 nicm 735: }
736:
1.46 nicm 737: /* Clear status line message after timer expires. */
1.52 nicm 738: /* ARGSUSED */
1.42 nicm 739: void
740: status_message_callback(unused int fd, unused short event, void *data)
741: {
742: struct client *c = data;
743:
744: status_message_clear(c);
1.1 nicm 745: }
746:
747: /* Draw client message on status line of present else on last line. */
748: int
749: status_message_redraw(struct client *c)
750: {
751: struct screen_write_ctx ctx;
752: struct session *s = c->session;
753: struct screen old_status;
754: size_t len;
755: struct grid_cell gc;
1.51 nicm 756: int utf8flag;
1.1 nicm 757:
758: if (c->tty.sx == 0 || c->tty.sy == 0)
759: return (0);
760: memcpy(&old_status, &c->status, sizeof old_status);
761: screen_init(&c->status, c->tty.sx, 1, 0);
762:
1.51 nicm 763: utf8flag = options_get_number(&s->options, "status-utf8");
764:
765: len = screen_write_strlen(utf8flag, "%s", c->message_string);
1.1 nicm 766: if (len > c->tty.sx)
767: len = c->tty.sx;
768:
769: memcpy(&gc, &grid_default_cell, sizeof gc);
1.33 nicm 770: colour_set_fg(&gc, options_get_number(&s->options, "message-fg"));
771: colour_set_bg(&gc, options_get_number(&s->options, "message-bg"));
1.1 nicm 772: gc.attr |= options_get_number(&s->options, "message-attr");
773:
774: screen_write_start(&ctx, NULL, &c->status);
775:
776: screen_write_cursormove(&ctx, 0, 0);
1.51 nicm 777: screen_write_nputs(&ctx, len, &gc, utf8flag, "%s", c->message_string);
1.1 nicm 778: for (; len < c->tty.sx; len++)
779: screen_write_putc(&ctx, &gc, ' ');
780:
781: screen_write_stop(&ctx);
782:
783: if (grid_compare(c->status.grid, old_status.grid) == 0) {
784: screen_free(&old_status);
785: return (0);
786: }
787: screen_free(&old_status);
788: return (1);
789: }
790:
1.46 nicm 791: /* Enable status line prompt. */
1.1 nicm 792: void
1.12 nicm 793: status_prompt_set(struct client *c, const char *msg,
794: int (*callbackfn)(void *, const char *), void (*freefn)(void *),
795: void *data, int flags)
1.1 nicm 796: {
1.20 nicm 797: int keys;
798:
1.12 nicm 799: status_message_clear(c);
800: status_prompt_clear(c);
801:
1.1 nicm 802: c->prompt_string = xstrdup(msg);
803:
804: c->prompt_buffer = xstrdup("");
805: c->prompt_index = 0;
806:
1.12 nicm 807: c->prompt_callbackfn = callbackfn;
808: c->prompt_freefn = freefn;
1.1 nicm 809: c->prompt_data = data;
810:
811: c->prompt_hindex = 0;
812:
813: c->prompt_flags = flags;
814:
1.20 nicm 815: keys = options_get_number(&c->session->options, "status-keys");
816: if (keys == MODEKEY_EMACS)
1.21 nicm 817: mode_key_init(&c->prompt_mdata, &mode_key_tree_emacs_edit);
1.20 nicm 818: else
1.21 nicm 819: mode_key_init(&c->prompt_mdata, &mode_key_tree_vi_edit);
1.1 nicm 820:
821: c->tty.flags |= (TTY_NOCURSOR|TTY_FREEZE);
822: c->flags |= CLIENT_STATUS;
823: }
824:
1.46 nicm 825: /* Remove status line prompt. */
1.1 nicm 826: void
827: status_prompt_clear(struct client *c)
828: {
1.55 nicm 829: if (c->prompt_string == NULL)
1.1 nicm 830: return;
831:
1.12 nicm 832: if (c->prompt_freefn != NULL && c->prompt_data != NULL)
833: c->prompt_freefn(c->prompt_data);
1.1 nicm 834:
835: xfree(c->prompt_string);
836: c->prompt_string = NULL;
837:
838: xfree(c->prompt_buffer);
839: c->prompt_buffer = NULL;
840:
841: c->tty.flags &= ~(TTY_NOCURSOR|TTY_FREEZE);
1.12 nicm 842: c->flags |= CLIENT_REDRAW; /* screen was frozen and may have changed */
1.7 nicm 843:
844: screen_reinit(&c->status);
1.27 nicm 845: }
846:
1.46 nicm 847: /* Update status line prompt with a new prompt string. */
1.27 nicm 848: void
849: status_prompt_update(struct client *c, const char *msg)
850: {
851: xfree(c->prompt_string);
852: c->prompt_string = xstrdup(msg);
853:
854: *c->prompt_buffer = '\0';
855: c->prompt_index = 0;
856:
857: c->prompt_hindex = 0;
858:
859: c->flags |= CLIENT_STATUS;
1.1 nicm 860: }
861:
862: /* Draw client prompt on status line of present else on last line. */
863: int
864: status_prompt_redraw(struct client *c)
865: {
1.51 nicm 866: struct screen_write_ctx ctx;
1.1 nicm 867: struct session *s = c->session;
868: struct screen old_status;
1.29 nicm 869: size_t i, size, left, len, off;
1.51 nicm 870: struct grid_cell gc, *gcp;
871: int utf8flag;
1.1 nicm 872:
873: if (c->tty.sx == 0 || c->tty.sy == 0)
874: return (0);
875: memcpy(&old_status, &c->status, sizeof old_status);
876: screen_init(&c->status, c->tty.sx, 1, 0);
877:
1.51 nicm 878: utf8flag = options_get_number(&s->options, "status-utf8");
879:
880: len = screen_write_strlen(utf8flag, "%s", c->prompt_string);
1.1 nicm 881: if (len > c->tty.sx)
882: len = c->tty.sx;
1.51 nicm 883: off = 0;
1.1 nicm 884:
885: memcpy(&gc, &grid_default_cell, sizeof gc);
1.33 nicm 886: colour_set_fg(&gc, options_get_number(&s->options, "message-fg"));
887: colour_set_bg(&gc, options_get_number(&s->options, "message-bg"));
1.1 nicm 888: gc.attr |= options_get_number(&s->options, "message-attr");
889:
890: screen_write_start(&ctx, NULL, &c->status);
891:
892: screen_write_cursormove(&ctx, 0, 0);
1.51 nicm 893: screen_write_nputs(&ctx, len, &gc, utf8flag, "%s", c->prompt_string);
1.1 nicm 894:
895: left = c->tty.sx - len;
896: if (left != 0) {
1.51 nicm 897: size = screen_write_strlen(utf8flag, "%s", c->prompt_buffer);
898: if (c->prompt_index >= left) {
1.17 nicm 899: off = c->prompt_index - left + 1;
1.51 nicm 900: if (c->prompt_index == size)
1.1 nicm 901: left--;
902: size = left;
903: }
1.51 nicm 904: screen_write_nputs(
905: &ctx, left, &gc, utf8flag, "%s", c->prompt_buffer + off);
1.1 nicm 906:
1.55 nicm 907: for (i = len + size; i < c->tty.sx; i++)
908: screen_write_putc(&ctx, &gc, ' ');
1.1 nicm 909: }
910:
911: screen_write_stop(&ctx);
1.51 nicm 912:
913: /* Apply fake cursor. */
914: off = len + c->prompt_index - off;
915: gcp = grid_view_get_cell(c->status.grid, off, 0);
916: gcp->attr ^= GRID_ATTR_REVERSE;
1.1 nicm 917:
918: if (grid_compare(c->status.grid, old_status.grid) == 0) {
919: screen_free(&old_status);
920: return (0);
921: }
922: screen_free(&old_status);
923: return (1);
924: }
925:
926: /* Handle keys in prompt. */
927: void
928: status_prompt_key(struct client *c, int key)
929: {
930: struct paste_buffer *pb;
1.30 nicm 931: char *s, *first, *last, word[64], swapc;
1.66 nicm 932: const char *histstr;
1.53 nicm 933: u_char ch;
1.1 nicm 934: size_t size, n, off, idx;
935:
936: size = strlen(c->prompt_buffer);
937: switch (mode_key_lookup(&c->prompt_mdata, key)) {
1.20 nicm 938: case MODEKEYEDIT_CURSORLEFT:
1.1 nicm 939: if (c->prompt_index > 0) {
940: c->prompt_index--;
941: c->flags |= CLIENT_STATUS;
942: }
943: break;
1.20 nicm 944: case MODEKEYEDIT_SWITCHMODEAPPEND:
945: case MODEKEYEDIT_CURSORRIGHT:
1.1 nicm 946: if (c->prompt_index < size) {
947: c->prompt_index++;
948: c->flags |= CLIENT_STATUS;
949: }
950: break;
1.20 nicm 951: case MODEKEYEDIT_STARTOFLINE:
1.1 nicm 952: if (c->prompt_index != 0) {
953: c->prompt_index = 0;
954: c->flags |= CLIENT_STATUS;
955: }
956: break;
1.20 nicm 957: case MODEKEYEDIT_ENDOFLINE:
1.1 nicm 958: if (c->prompt_index != size) {
959: c->prompt_index = size;
960: c->flags |= CLIENT_STATUS;
961: }
962: break;
1.20 nicm 963: case MODEKEYEDIT_COMPLETE:
1.1 nicm 964: if (*c->prompt_buffer == '\0')
965: break;
966:
967: idx = c->prompt_index;
968: if (idx != 0)
969: idx--;
970:
971: /* Find the word we are in. */
972: first = c->prompt_buffer + idx;
973: while (first > c->prompt_buffer && *first != ' ')
974: first--;
975: while (*first == ' ')
976: first++;
977: last = c->prompt_buffer + idx;
978: while (*last != '\0' && *last != ' ')
979: last++;
980: while (*last == ' ')
981: last--;
982: if (*last != '\0')
983: last++;
984: if (last <= first ||
985: ((size_t) (last - first)) > (sizeof word) - 1)
986: break;
987: memcpy(word, first, last - first);
988: word[last - first] = '\0';
989:
990: /* And try to complete it. */
991: if ((s = status_prompt_complete(word)) == NULL)
992: break;
993:
994: /* Trim out word. */
995: n = size - (last - c->prompt_buffer) + 1; /* with \0 */
996: memmove(first, last, n);
997: size -= last - first;
998:
999: /* Insert the new word. */
1.55 nicm 1000: size += strlen(s);
1.1 nicm 1001: off = first - c->prompt_buffer;
1.55 nicm 1002: c->prompt_buffer = xrealloc(c->prompt_buffer, 1, size + 1);
1.1 nicm 1003: first = c->prompt_buffer + off;
1.55 nicm 1004: memmove(first + strlen(s), first, n);
1005: memcpy(first, s, strlen(s));
1.1 nicm 1006:
1007: c->prompt_index = (first - c->prompt_buffer) + strlen(s);
1.22 nicm 1008: xfree(s);
1.1 nicm 1009:
1010: c->flags |= CLIENT_STATUS;
1011: break;
1.20 nicm 1012: case MODEKEYEDIT_BACKSPACE:
1.1 nicm 1013: if (c->prompt_index != 0) {
1014: if (c->prompt_index == size)
1015: c->prompt_buffer[--c->prompt_index] = '\0';
1016: else {
1017: memmove(c->prompt_buffer + c->prompt_index - 1,
1018: c->prompt_buffer + c->prompt_index,
1019: size + 1 - c->prompt_index);
1020: c->prompt_index--;
1021: }
1022: c->flags |= CLIENT_STATUS;
1023: }
1024: break;
1.55 nicm 1025: case MODEKEYEDIT_DELETE:
1.1 nicm 1026: if (c->prompt_index != size) {
1027: memmove(c->prompt_buffer + c->prompt_index,
1028: c->prompt_buffer + c->prompt_index + 1,
1029: size + 1 - c->prompt_index);
1.18 nicm 1030: c->flags |= CLIENT_STATUS;
1031: }
1.26 nicm 1032: break;
1033: case MODEKEYEDIT_DELETELINE:
1034: *c->prompt_buffer = '\0';
1035: c->prompt_index = 0;
1036: c->flags |= CLIENT_STATUS;
1.18 nicm 1037: break;
1.20 nicm 1038: case MODEKEYEDIT_DELETETOENDOFLINE:
1.18 nicm 1039: if (c->prompt_index < size) {
1040: c->prompt_buffer[c->prompt_index] = '\0';
1.1 nicm 1041: c->flags |= CLIENT_STATUS;
1042: }
1043: break;
1.20 nicm 1044: case MODEKEYEDIT_HISTORYUP:
1.66 nicm 1045: histstr = status_prompt_up_history(&c->prompt_hindex);
1046: if (histstr == NULL)
1.1 nicm 1047: break;
1048: xfree(c->prompt_buffer);
1.66 nicm 1049: c->prompt_buffer = xstrdup(histstr);
1.1 nicm 1050: c->prompt_index = strlen(c->prompt_buffer);
1051: c->flags |= CLIENT_STATUS;
1052: break;
1.20 nicm 1053: case MODEKEYEDIT_HISTORYDOWN:
1.66 nicm 1054: histstr = status_prompt_down_history(&c->prompt_hindex);
1055: if (histstr == NULL)
1.65 nicm 1056: break;
1.1 nicm 1057: xfree(c->prompt_buffer);
1.66 nicm 1058: c->prompt_buffer = xstrdup(histstr);
1.1 nicm 1059: c->prompt_index = strlen(c->prompt_buffer);
1060: c->flags |= CLIENT_STATUS;
1061: break;
1.20 nicm 1062: case MODEKEYEDIT_PASTE:
1.68 nicm 1063: if ((pb = paste_get_top(&global_buffers)) == NULL)
1.1 nicm 1064: break;
1.32 nicm 1065: for (n = 0; n < pb->size; n++) {
1.53 nicm 1066: ch = (u_char) pb->data[n];
1067: if (ch < 32 || ch == 127)
1.32 nicm 1068: break;
1069: }
1.1 nicm 1070:
1071: c->prompt_buffer = xrealloc(c->prompt_buffer, 1, size + n + 1);
1072: if (c->prompt_index == size) {
1073: memcpy(c->prompt_buffer + c->prompt_index, pb->data, n);
1074: c->prompt_index += n;
1075: c->prompt_buffer[c->prompt_index] = '\0';
1076: } else {
1077: memmove(c->prompt_buffer + c->prompt_index + n,
1078: c->prompt_buffer + c->prompt_index,
1079: size + 1 - c->prompt_index);
1080: memcpy(c->prompt_buffer + c->prompt_index, pb->data, n);
1081: c->prompt_index += n;
1082: }
1083:
1084: c->flags |= CLIENT_STATUS;
1.30 nicm 1085: break;
1086: case MODEKEYEDIT_TRANSPOSECHARS:
1087: idx = c->prompt_index;
1088: if (idx < size)
1089: idx++;
1090: if (idx >= 2) {
1091: swapc = c->prompt_buffer[idx - 2];
1092: c->prompt_buffer[idx - 2] = c->prompt_buffer[idx - 1];
1093: c->prompt_buffer[idx - 1] = swapc;
1094: c->prompt_index = idx;
1095: c->flags |= CLIENT_STATUS;
1096: }
1.1 nicm 1097: break;
1.55 nicm 1098: case MODEKEYEDIT_ENTER:
1.25 nicm 1099: if (*c->prompt_buffer != '\0')
1.65 nicm 1100: status_prompt_add_history(c->prompt_buffer);
1.25 nicm 1101: if (c->prompt_callbackfn(c->prompt_data, c->prompt_buffer) == 0)
1102: status_prompt_clear(c);
1103: break;
1.20 nicm 1104: case MODEKEYEDIT_CANCEL:
1.12 nicm 1105: if (c->prompt_callbackfn(c->prompt_data, NULL) == 0)
1.1 nicm 1106: status_prompt_clear(c);
1107: break;
1.20 nicm 1108: case MODEKEY_OTHER:
1.61 nicm 1109: if ((key & 0xff00) != 0 || key < 32 || key == 127)
1.1 nicm 1110: break;
1111: c->prompt_buffer = xrealloc(c->prompt_buffer, 1, size + 2);
1112:
1113: if (c->prompt_index == size) {
1114: c->prompt_buffer[c->prompt_index++] = key;
1115: c->prompt_buffer[c->prompt_index] = '\0';
1116: } else {
1117: memmove(c->prompt_buffer + c->prompt_index + 1,
1118: c->prompt_buffer + c->prompt_index,
1119: size + 1 - c->prompt_index);
1120: c->prompt_buffer[c->prompt_index++] = key;
1121: }
1122:
1123: if (c->prompt_flags & PROMPT_SINGLE) {
1.12 nicm 1124: if (c->prompt_callbackfn(
1.1 nicm 1125: c->prompt_data, c->prompt_buffer) == 0)
1126: status_prompt_clear(c);
1127: }
1128:
1129: c->flags |= CLIENT_STATUS;
1130: break;
1131: default:
1132: break;
1133: }
1134: }
1135:
1.65 nicm 1136: /* Get previous line from the history. */
1137: const char *
1138: status_prompt_up_history(u_int *idx)
1139: {
1140: u_int size;
1141:
1142: /*
1143: * History runs from 0 to size - 1.
1144: *
1145: * Index is from 0 to size. Zero is empty.
1146: */
1147:
1148: size = ARRAY_LENGTH(&status_prompt_history);
1149: if (size == 0 || *idx == size)
1150: return (NULL);
1151: (*idx)++;
1152: return (ARRAY_ITEM(&status_prompt_history, size - *idx));
1153: }
1154:
1155: /* Get next line from the history. */
1156: const char *
1157: status_prompt_down_history(u_int *idx)
1158: {
1159: u_int size;
1160:
1161: size = ARRAY_LENGTH(&status_prompt_history);
1162: if (size == 0 || *idx == 0)
1163: return ("");
1164: (*idx)--;
1165: if (*idx == 0)
1166: return ("");
1167: return (ARRAY_ITEM(&status_prompt_history, size - *idx));
1168: }
1169:
1.1 nicm 1170: /* Add line to the history. */
1171: void
1.65 nicm 1172: status_prompt_add_history(const char *line)
1.1 nicm 1173: {
1.65 nicm 1174: u_int size;
1175:
1176: size = ARRAY_LENGTH(&status_prompt_history);
1177: if (size > 0 && strcmp(ARRAY_LAST(&status_prompt_history), line) == 0)
1.1 nicm 1178: return;
1179:
1.65 nicm 1180: if (size == PROMPT_HISTORY) {
1181: xfree(ARRAY_FIRST(&status_prompt_history));
1182: ARRAY_REMOVE(&status_prompt_history, 0);
1.1 nicm 1183: }
1184:
1.65 nicm 1185: ARRAY_ADD(&status_prompt_history, xstrdup(line));
1.1 nicm 1186: }
1187:
1188: /* Complete word. */
1189: char *
1190: status_prompt_complete(const char *s)
1191: {
1.69 nicm 1192: const struct cmd_entry **cmdent;
1193: const struct options_table_entry *oe;
1194: ARRAY_DECL(, const char *) list;
1195: char *prefix, *s2;
1196: u_int i;
1197: size_t j;
1.1 nicm 1198:
1199: if (*s == '\0')
1200: return (NULL);
1201:
1202: /* First, build a list of all the possible matches. */
1203: ARRAY_INIT(&list);
1204: for (cmdent = cmd_table; *cmdent != NULL; cmdent++) {
1205: if (strncmp((*cmdent)->name, s, strlen(s)) == 0)
1206: ARRAY_ADD(&list, (*cmdent)->name);
1.56 nicm 1207: }
1.69 nicm 1208: for (oe = server_options_table; oe->name != NULL; oe++) {
1209: if (strncmp(oe->name, s, strlen(s)) == 0)
1210: ARRAY_ADD(&list, oe->name);
1211: }
1212: for (oe = session_options_table; oe->name != NULL; oe++) {
1213: if (strncmp(oe->name, s, strlen(s)) == 0)
1214: ARRAY_ADD(&list, oe->name);
1215: }
1216: for (oe = window_options_table; oe->name != NULL; oe++) {
1217: if (strncmp(oe->name, s, strlen(s)) == 0)
1218: ARRAY_ADD(&list, oe->name);
1.1 nicm 1219: }
1220:
1221: /* If none, bail now. */
1222: if (ARRAY_LENGTH(&list) == 0) {
1223: ARRAY_FREE(&list);
1224: return (NULL);
1225: }
1226:
1227: /* If an exact match, return it, with a trailing space. */
1228: if (ARRAY_LENGTH(&list) == 1) {
1229: xasprintf(&s2, "%s ", ARRAY_FIRST(&list));
1230: ARRAY_FREE(&list);
1231: return (s2);
1232: }
1233:
1234: /* Now loop through the list and find the longest common prefix. */
1235: prefix = xstrdup(ARRAY_FIRST(&list));
1236: for (i = 1; i < ARRAY_LENGTH(&list); i++) {
1237: s = ARRAY_ITEM(&list, i);
1238:
1239: j = strlen(s);
1240: if (j > strlen(prefix))
1241: j = strlen(prefix);
1242: for (; j > 0; j--) {
1243: if (prefix[j - 1] != s[j - 1])
1244: prefix[j - 1] = '\0';
1245: }
1246: }
1247:
1248: ARRAY_FREE(&list);
1249: return (prefix);
1250: }
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