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Annotation of src/usr.bin/tmux/window.c, Revision 1.39

1.39    ! nicm        1: /* $OpenBSD: window.c,v 1.38 2009/11/04 23:54:57 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/ioctl.h>
                     21:
                     22: #include <errno.h>
                     23: #include <fcntl.h>
1.5       nicm       24: #include <fnmatch.h>
1.1       nicm       25: #include <paths.h>
1.8       nicm       26: #include <pwd.h>
1.1       nicm       27: #include <signal.h>
                     28: #include <stdint.h>
                     29: #include <stdlib.h>
                     30: #include <string.h>
                     31: #include <termios.h>
                     32: #include <unistd.h>
                     33: #include <util.h>
                     34:
                     35: #include "tmux.h"
                     36:
                     37: /*
1.14      nicm       38:  * Each window is attached to a number of panes, each of which is a pty. This
1.1       nicm       39:  * file contains code to handle them.
                     40:  *
                     41:  * A pane has two buffers attached, these are filled and emptied by the main
                     42:  * server poll loop. Output data is received from pty's in screen format,
                     43:  * translated and returned as a series of escape sequences and strings via
                     44:  * input_parse (in input.c). Input data is received as key codes and written
                     45:  * directly via input_key.
                     46:  *
                     47:  * Each pane also has a "virtual" screen (screen.c) which contains the current
                     48:  * state and is redisplayed when the window is reattached to a client.
                     49:  *
                     50:  * Windows are stored directly on a global array and wrapped in any number of
                     51:  * winlink structs to be linked onto local session RB trees. A reference count
                     52:  * is maintained and a window removed from the global list and destroyed when
                     53:  * it reaches zero.
                     54:  */
                     55:
                     56: /* Global window list. */
                     57: struct windows windows;
                     58:
1.37      nicm       59: void   window_pane_read_callback(struct bufferevent *, void *);
                     60: void   window_pane_error_callback(struct bufferevent *, short, void *);
                     61:
1.1       nicm       62: RB_GENERATE(winlinks, winlink, entry, winlink_cmp);
                     63:
                     64: int
                     65: winlink_cmp(struct winlink *wl1, struct winlink *wl2)
                     66: {
                     67:        return (wl1->idx - wl2->idx);
1.12      nicm       68: }
                     69:
                     70: struct winlink *
                     71: winlink_find_by_window(struct winlinks *wwl, struct window *w)
                     72: {
                     73:        struct winlink  *wl;
                     74:
                     75:        RB_FOREACH(wl, winlinks, wwl) {
                     76:                if (wl->window == w)
                     77:                        return (wl);
                     78:        }
                     79:
                     80:        return (NULL);
1.1       nicm       81: }
                     82:
                     83: struct winlink *
                     84: winlink_find_by_index(struct winlinks *wwl, int idx)
                     85: {
                     86:        struct winlink  wl;
                     87:
                     88:        if (idx < 0)
                     89:                fatalx("bad index");
                     90:
                     91:        wl.idx = idx;
                     92:        return (RB_FIND(winlinks, wwl, &wl));
                     93: }
                     94:
                     95: int
1.22      nicm       96: winlink_next_index(struct winlinks *wwl, int idx)
1.1       nicm       97: {
1.22      nicm       98:        int     i;
1.1       nicm       99:
1.22      nicm      100:        i = idx;
                    101:        do {
1.1       nicm      102:                if (winlink_find_by_index(wwl, i) == NULL)
                    103:                        return (i);
1.22      nicm      104:                if (i == INT_MAX)
                    105:                        i = 0;
                    106:                else
                    107:                        i++;
                    108:        } while (i != idx);
                    109:        return (-1);
1.1       nicm      110: }
                    111:
                    112: u_int
                    113: winlink_count(struct winlinks *wwl)
                    114: {
                    115:        struct winlink  *wl;
                    116:        u_int            n;
                    117:
                    118:        n = 0;
                    119:        RB_FOREACH(wl, winlinks, wwl)
                    120:                n++;
                    121:
                    122:        return (n);
                    123: }
                    124:
                    125: struct winlink *
                    126: winlink_add(struct winlinks *wwl, struct window *w, int idx)
                    127: {
                    128:        struct winlink  *wl;
                    129:
1.22      nicm      130:        if (idx < 0) {
                    131:                if ((idx = winlink_next_index(wwl, -idx - 1)) == -1)
                    132:                        return (NULL);
                    133:        } else if (winlink_find_by_index(wwl, idx) != NULL)
1.1       nicm      134:                return (NULL);
                    135:
                    136:        wl = xcalloc(1, sizeof *wl);
                    137:        wl->idx = idx;
                    138:        wl->window = w;
                    139:        RB_INSERT(winlinks, wwl, wl);
                    140:
                    141:        w->references++;
                    142:
                    143:        return (wl);
                    144: }
                    145:
                    146: void
                    147: winlink_remove(struct winlinks *wwl, struct winlink *wl)
                    148: {
                    149:        struct window   *w = wl->window;
                    150:
                    151:        RB_REMOVE(winlinks, wwl, wl);
                    152:        xfree(wl);
                    153:
                    154:        if (w->references == 0)
                    155:                fatal("bad reference count");
                    156:        w->references--;
                    157:        if (w->references == 0)
                    158:                window_destroy(w);
                    159: }
                    160:
                    161: struct winlink *
                    162: winlink_next(unused struct winlinks *wwl, struct winlink *wl)
                    163: {
                    164:        return (RB_NEXT(winlinks, wwl, wl));
                    165: }
                    166:
                    167: struct winlink *
                    168: winlink_previous(unused struct winlinks *wwl, struct winlink *wl)
                    169: {
                    170:        return (RB_PREV(winlinks, wwl, wl));
                    171: }
                    172:
                    173: void
                    174: winlink_stack_push(struct winlink_stack *stack, struct winlink *wl)
                    175: {
                    176:        if (wl == NULL)
                    177:                return;
                    178:
                    179:        winlink_stack_remove(stack, wl);
1.28      nicm      180:        TAILQ_INSERT_HEAD(stack, wl, sentry);
1.1       nicm      181: }
                    182:
                    183: void
                    184: winlink_stack_remove(struct winlink_stack *stack, struct winlink *wl)
                    185: {
                    186:        struct winlink  *wl2;
                    187:
                    188:        if (wl == NULL)
                    189:                return;
1.28      nicm      190:
                    191:        TAILQ_FOREACH(wl2, stack, sentry) {
1.1       nicm      192:                if (wl2 == wl) {
1.28      nicm      193:                        TAILQ_REMOVE(stack, wl, sentry);
1.1       nicm      194:                        return;
                    195:                }
                    196:        }
                    197: }
                    198:
                    199: int
                    200: window_index(struct window *s, u_int *i)
                    201: {
                    202:        for (*i = 0; *i < ARRAY_LENGTH(&windows); (*i)++) {
                    203:                if (s == ARRAY_ITEM(&windows, *i))
                    204:                        return (0);
                    205:        }
                    206:        return (-1);
                    207: }
                    208:
                    209: struct window *
                    210: window_create1(u_int sx, u_int sy)
                    211: {
                    212:        struct window   *w;
                    213:        u_int            i;
                    214:
1.38      nicm      215:        w = xcalloc(1, sizeof *w);
1.1       nicm      216:        w->name = NULL;
                    217:        w->flags = 0;
                    218:
                    219:        TAILQ_INIT(&w->panes);
                    220:        w->active = NULL;
1.14      nicm      221:
1.17      nicm      222:        w->lastlayout = -1;
1.14      nicm      223:        w->layout_root = NULL;
                    224:
1.1       nicm      225:        w->sx = sx;
                    226:        w->sy = sy;
                    227:
1.38      nicm      228:        queue_window_name(w);
                    229:
1.7       nicm      230:        options_init(&w->options, &global_w_options);
1.1       nicm      231:
                    232:        for (i = 0; i < ARRAY_LENGTH(&windows); i++) {
                    233:                if (ARRAY_ITEM(&windows, i) == NULL) {
                    234:                        ARRAY_SET(&windows, i, w);
                    235:                        break;
                    236:                }
                    237:        }
                    238:        if (i == ARRAY_LENGTH(&windows))
                    239:                ARRAY_ADD(&windows, w);
                    240:        w->references = 0;
                    241:
                    242:        return (w);
                    243: }
                    244:
                    245: struct window *
1.23      nicm      246: window_create(const char *name, const char *cmd, const char *shell,
                    247:     const char *cwd, struct environ *env, struct termios *tio,
                    248:     u_int sx, u_int sy, u_int hlimit,char **cause)
1.1       nicm      249: {
1.14      nicm      250:        struct window           *w;
                    251:        struct window_pane      *wp;
1.1       nicm      252:
                    253:        w = window_create1(sx, sy);
1.16      nicm      254:        wp = window_add_pane(w, hlimit);
1.14      nicm      255:        layout_init(w);
1.23      nicm      256:        if (window_pane_spawn(wp, cmd, shell, cwd, env, tio, cause) != 0) {
1.1       nicm      257:                window_destroy(w);
                    258:                return (NULL);
                    259:        }
                    260:        w->active = TAILQ_FIRST(&w->panes);
                    261:        if (name != NULL) {
                    262:                w->name = xstrdup(name);
                    263:                options_set_number(&w->options, "automatic-rename", 0);
                    264:        } else
                    265:                w->name = default_window_name(w);
                    266:        return (w);
                    267: }
                    268:
                    269: void
                    270: window_destroy(struct window *w)
                    271: {
                    272:        u_int   i;
                    273:
                    274:        if (window_index(w, &i) != 0)
                    275:                fatalx("index not found");
                    276:        ARRAY_SET(&windows, i, NULL);
                    277:        while (!ARRAY_EMPTY(&windows) && ARRAY_LAST(&windows) == NULL)
                    278:                ARRAY_TRUNC(&windows, 1);
                    279:
1.14      nicm      280:        if (w->layout_root != NULL)
                    281:                layout_free(w);
                    282:
1.38      nicm      283:        evtimer_del(&w->name_timer);
                    284:
1.1       nicm      285:        options_free(&w->options);
                    286:
                    287:        window_destroy_panes(w);
                    288:
                    289:        if (w->name != NULL)
                    290:                xfree(w->name);
                    291:        xfree(w);
                    292: }
                    293:
1.15      nicm      294: void
1.1       nicm      295: window_resize(struct window *w, u_int sx, u_int sy)
                    296: {
                    297:        w->sx = sx;
                    298:        w->sy = sy;
                    299: }
                    300:
                    301: void
                    302: window_set_active_pane(struct window *w, struct window_pane *wp)
                    303: {
                    304:        w->active = wp;
1.10      nicm      305:        while (!window_pane_visible(w->active)) {
1.1       nicm      306:                w->active = TAILQ_PREV(w->active, window_panes, entry);
1.10      nicm      307:                if (w->active == NULL)
                    308:                        w->active = TAILQ_LAST(&w->panes, window_panes);
                    309:                if (w->active == wp)
                    310:                        return;
1.29      nicm      311:        }
                    312: }
                    313:
                    314: void
                    315: window_set_active_at(struct window *w, u_int x, u_int y)
                    316: {
                    317:        struct window_pane      *wp;
                    318:
                    319:        TAILQ_FOREACH(wp, &w->panes, entry) {
                    320:                if (!window_pane_visible(wp))
                    321:                        continue;
                    322:                if (x < wp->xoff || x >= wp->xoff + wp->sx)
                    323:                        continue;
                    324:                if (y < wp->yoff || y >= wp->yoff + wp->sy)
                    325:                        continue;
                    326:                window_set_active_pane(w, wp);
                    327:                break;
1.10      nicm      328:        }
1.1       nicm      329: }
                    330:
                    331: struct window_pane *
1.16      nicm      332: window_add_pane(struct window *w, u_int hlimit)
1.1       nicm      333: {
                    334:        struct window_pane      *wp;
                    335:
1.14      nicm      336:        wp = window_pane_create(w, w->sx, w->sy, hlimit);
1.1       nicm      337:        if (TAILQ_EMPTY(&w->panes))
                    338:                TAILQ_INSERT_HEAD(&w->panes, wp, entry);
                    339:        else
                    340:                TAILQ_INSERT_AFTER(&w->panes, w->active, wp, entry);
                    341:        return (wp);
                    342: }
                    343:
                    344: void
                    345: window_remove_pane(struct window *w, struct window_pane *wp)
                    346: {
                    347:        w->active = TAILQ_PREV(wp, window_panes, entry);
                    348:        if (w->active == NULL)
                    349:                w->active = TAILQ_NEXT(wp, entry);
                    350:
                    351:        TAILQ_REMOVE(&w->panes, wp, entry);
                    352:        window_pane_destroy(wp);
                    353: }
                    354:
                    355: struct window_pane *
                    356: window_pane_at_index(struct window *w, u_int idx)
                    357: {
                    358:        struct window_pane      *wp;
                    359:        u_int                    n;
                    360:
                    361:        n = 0;
                    362:        TAILQ_FOREACH(wp, &w->panes, entry) {
                    363:                if (n == idx)
                    364:                        return (wp);
                    365:                n++;
                    366:        }
                    367:        return (NULL);
1.13      nicm      368: }
                    369:
                    370: u_int
                    371: window_pane_index(struct window *w, struct window_pane *wp)
                    372: {
                    373:        struct window_pane      *wq;
                    374:        u_int                    n;
                    375:
                    376:        n = 0;
                    377:        TAILQ_FOREACH(wq, &w->panes, entry) {
                    378:                if (wp == wq)
                    379:                        break;
                    380:                n++;
                    381:        }
                    382:        return (n);
1.1       nicm      383: }
                    384:
                    385: u_int
                    386: window_count_panes(struct window *w)
                    387: {
                    388:        struct window_pane      *wp;
                    389:        u_int                    n;
                    390:
                    391:        n = 0;
                    392:        TAILQ_FOREACH(wp, &w->panes, entry)
                    393:                n++;
                    394:        return (n);
                    395: }
                    396:
                    397: void
                    398: window_destroy_panes(struct window *w)
                    399: {
                    400:        struct window_pane      *wp;
                    401:
                    402:        while (!TAILQ_EMPTY(&w->panes)) {
                    403:                wp = TAILQ_FIRST(&w->panes);
                    404:                TAILQ_REMOVE(&w->panes, wp, entry);
                    405:                window_pane_destroy(wp);
                    406:        }
                    407: }
                    408:
                    409: struct window_pane *
                    410: window_pane_create(struct window *w, u_int sx, u_int sy, u_int hlimit)
                    411: {
                    412:        struct window_pane      *wp;
                    413:
                    414:        wp = xcalloc(1, sizeof *wp);
                    415:        wp->window = w;
                    416:
                    417:        wp->cmd = NULL;
1.23      nicm      418:        wp->shell = NULL;
1.1       nicm      419:        wp->cwd = NULL;
                    420:
                    421:        wp->fd = -1;
1.37      nicm      422:        wp->event = NULL;
1.1       nicm      423:
                    424:        wp->mode = NULL;
1.14      nicm      425:
                    426:        wp->layout_cell = NULL;
1.1       nicm      427:
                    428:        wp->xoff = 0;
                    429:        wp->yoff = 0;
                    430:
                    431:        wp->sx = sx;
                    432:        wp->sy = sy;
                    433:
1.32      nicm      434:        wp->pipe_fd = -1;
                    435:        wp->pipe_off = 0;
1.36      nicm      436:        wp->pipe_event = NULL;
1.32      nicm      437:
1.9       nicm      438:        wp->saved_grid = NULL;
                    439:
1.1       nicm      440:        screen_init(&wp->base, sx, sy, hlimit);
                    441:        wp->screen = &wp->base;
                    442:
                    443:        input_init(wp);
                    444:
                    445:        return (wp);
                    446: }
                    447:
                    448: void
                    449: window_pane_destroy(struct window_pane *wp)
                    450: {
1.37      nicm      451:        if (wp->fd != -1) {
1.1       nicm      452:                close(wp->fd);
1.37      nicm      453:                bufferevent_free(wp->event);
                    454:        }
1.1       nicm      455:
                    456:        input_free(wp);
                    457:
                    458:        window_pane_reset_mode(wp);
                    459:        screen_free(&wp->base);
1.9       nicm      460:        if (wp->saved_grid != NULL)
                    461:                grid_destroy(wp->saved_grid);
1.1       nicm      462:
1.32      nicm      463:        if (wp->pipe_fd != -1) {
                    464:                close(wp->pipe_fd);
1.36      nicm      465:                bufferevent_free(wp->pipe_event);
1.32      nicm      466:        }
                    467:
1.1       nicm      468:        if (wp->cwd != NULL)
                    469:                xfree(wp->cwd);
1.23      nicm      470:        if (wp->shell != NULL)
                    471:                xfree(wp->shell);
1.1       nicm      472:        if (wp->cmd != NULL)
                    473:                xfree(wp->cmd);
                    474:        xfree(wp);
                    475: }
                    476:
                    477: int
1.23      nicm      478: window_pane_spawn(struct window_pane *wp, const char *cmd, const char *shell,
1.21      nicm      479:     const char *cwd, struct environ *env, struct termios *tio, char **cause)
1.1       nicm      480: {
1.18      nicm      481:        struct winsize           ws;
                    482:        int                      mode;
                    483:        char                    *argv0, **varp, *var;
                    484:        ARRAY_DECL(, char *)     varlist;
                    485:        struct environ_entry    *envent;
                    486:        const char              *ptr;
1.25      nicm      487:        struct termios           tio2;
1.18      nicm      488:        u_int                    i;
1.1       nicm      489:
1.37      nicm      490:        if (wp->fd != -1) {
1.1       nicm      491:                close(wp->fd);
1.37      nicm      492:                bufferevent_free(wp->event);
                    493:        }
1.1       nicm      494:        if (cmd != NULL) {
                    495:                if (wp->cmd != NULL)
                    496:                        xfree(wp->cmd);
                    497:                wp->cmd = xstrdup(cmd);
                    498:        }
1.23      nicm      499:        if (shell != NULL) {
                    500:                if (wp->shell != NULL)
                    501:                        xfree(wp->shell);
                    502:                wp->shell = xstrdup(shell);
                    503:        }
1.1       nicm      504:        if (cwd != NULL) {
                    505:                if (wp->cwd != NULL)
                    506:                        xfree(wp->cwd);
                    507:                wp->cwd = xstrdup(cwd);
                    508:        }
                    509:
                    510:        memset(&ws, 0, sizeof ws);
                    511:        ws.ws_col = screen_size_x(&wp->base);
                    512:        ws.ws_row = screen_size_y(&wp->base);
                    513:
1.25      nicm      514:        switch (wp->pid = forkpty(&wp->fd, wp->tty, NULL, &ws)) {
1.1       nicm      515:        case -1:
                    516:                wp->fd = -1;
                    517:                xasprintf(cause, "%s: %s", cmd, strerror(errno));
                    518:                return (-1);
                    519:        case 0:
                    520:                if (chdir(wp->cwd) != 0)
                    521:                        chdir("/");
1.25      nicm      522:
                    523:                if (tcgetattr(STDIN_FILENO, &tio2) != 0)
                    524:                        fatal("tcgetattr failed");
                    525:                if (tio != NULL)
                    526:                        memcpy(tio2.c_cc, tio->c_cc, sizeof tio2.c_cc);
                    527:                tio2.c_cc[VERASE] = '\177';
                    528:                if (tcsetattr(STDIN_FILENO, TCSANOW, &tio2) != 0)
                    529:                        fatal("tcgetattr failed");
1.18      nicm      530:
                    531:                ARRAY_INIT(&varlist);
                    532:                for (varp = environ; *varp != NULL; varp++) {
                    533:                        var = xstrdup(*varp);
                    534:                        var[strcspn(var, "=")] = '\0';
                    535:                        ARRAY_ADD(&varlist, var);
                    536:                }
                    537:                for (i = 0; i < ARRAY_LENGTH(&varlist); i++) {
                    538:                        var = ARRAY_ITEM(&varlist, i);
                    539:                        unsetenv(var);
1.1       nicm      540:                }
1.18      nicm      541:                RB_FOREACH(envent, environ, env) {
                    542:                        if (envent->value != NULL)
                    543:                                setenv(envent->name, envent->value, 1);
                    544:                }
                    545:
1.35      nicm      546:                server_signal_clear();
1.1       nicm      547:                log_close();
                    548:
1.8       nicm      549:                if (*wp->cmd != '\0') {
1.24      nicm      550:                        /* Set SHELL but only if it is currently not useful. */
                    551:                        shell = getenv("SHELL");
                    552:                        if (shell == NULL || *shell == '\0' || areshell(shell))
                    553:                                setenv("SHELL", wp->shell, 1);
                    554:
1.8       nicm      555:                        execl(_PATH_BSHELL, "sh", "-c", wp->cmd, (char *) NULL);
                    556:                        fatal("execl failed");
                    557:                }
                    558:
                    559:                /* No command; fork a login shell. */
1.23      nicm      560:                ptr = strrchr(wp->shell, '/');
                    561:                if (ptr != NULL && *(ptr + 1) != '\0')
1.8       nicm      562:                        xasprintf(&argv0, "-%s", ptr + 1);
                    563:                else
1.23      nicm      564:                        xasprintf(&argv0, "-%s", wp->shell);
1.24      nicm      565:                setenv("SHELL", wp->shell, 1);
1.23      nicm      566:                execl(wp->shell, argv0, (char *) NULL);
1.1       nicm      567:                fatal("execl failed");
                    568:        }
                    569:
                    570:        if ((mode = fcntl(wp->fd, F_GETFL)) == -1)
                    571:                fatal("fcntl failed");
                    572:        if (fcntl(wp->fd, F_SETFL, mode|O_NONBLOCK) == -1)
                    573:                fatal("fcntl failed");
                    574:        if (fcntl(wp->fd, F_SETFD, FD_CLOEXEC) == -1)
                    575:                fatal("fcntl failed");
1.37      nicm      576:        wp->event = bufferevent_new(wp->fd,
                    577:            window_pane_read_callback, NULL, window_pane_error_callback, wp);
                    578:        bufferevent_enable(wp->event, EV_READ|EV_WRITE);
1.1       nicm      579:
                    580:        return (0);
                    581: }
                    582:
1.15      nicm      583: void
1.37      nicm      584: window_pane_read_callback(unused struct bufferevent *bufev, void *data)
                    585: {
                    586:        struct window_pane *wp = data;
                    587:
                    588:        window_pane_parse(wp);
                    589: }
                    590:
                    591: void
                    592: window_pane_error_callback(
                    593:     unused struct bufferevent *bufev, unused short what, void *data)
                    594: {
                    595:        struct window_pane *wp = data;
                    596:
1.39    ! nicm      597:        server_destroy_pane(wp);
1.37      nicm      598: }
                    599:
                    600: void
1.1       nicm      601: window_pane_resize(struct window_pane *wp, u_int sx, u_int sy)
                    602: {
                    603:        struct winsize  ws;
                    604:
                    605:        if (sx == wp->sx && sy == wp->sy)
1.15      nicm      606:                return;
1.1       nicm      607:        wp->sx = sx;
                    608:        wp->sy = sy;
                    609:
                    610:        memset(&ws, 0, sizeof ws);
                    611:        ws.ws_col = sx;
                    612:        ws.ws_row = sy;
                    613:
                    614:        screen_resize(&wp->base, sx, sy);
                    615:        if (wp->mode != NULL)
                    616:                wp->mode->resize(wp, sx, sy);
                    617:
                    618:        if (wp->fd != -1 && ioctl(wp->fd, TIOCSWINSZ, &ws) == -1)
                    619:                fatal("ioctl failed");
                    620: }
                    621:
                    622: int
                    623: window_pane_set_mode(struct window_pane *wp, const struct window_mode *mode)
                    624: {
                    625:        struct screen   *s;
                    626:
1.15      nicm      627:        if (wp->mode != NULL)
1.1       nicm      628:                return (1);
                    629:        wp->mode = mode;
                    630:
                    631:        if ((s = wp->mode->init(wp)) != NULL)
                    632:                wp->screen = s;
1.34      nicm      633:        wp->flags |= PANE_REDRAW;
1.1       nicm      634:        return (0);
                    635: }
                    636:
                    637: void
                    638: window_pane_reset_mode(struct window_pane *wp)
                    639: {
                    640:        if (wp->mode == NULL)
                    641:                return;
                    642:
                    643:        wp->mode->free(wp);
                    644:        wp->mode = NULL;
                    645:
                    646:        wp->screen = &wp->base;
1.34      nicm      647:        wp->flags |= PANE_REDRAW;
1.1       nicm      648: }
                    649:
                    650: void
                    651: window_pane_parse(struct window_pane *wp)
                    652: {
1.37      nicm      653:        char   *data;
1.32      nicm      654:        size_t  new_size;
1.33      nicm      655:
                    656:        if (wp->mode != NULL)
                    657:                return;
1.32      nicm      658:
1.37      nicm      659:        new_size = EVBUFFER_LENGTH(wp->event->input) - wp->pipe_off;
                    660:        if (wp->pipe_fd != -1 && new_size > 0) {
                    661:                data = EVBUFFER_DATA(wp->event->input);
                    662:                bufferevent_write(wp->pipe_event, data, new_size);
                    663:        }
1.32      nicm      664:
1.1       nicm      665:        input_parse(wp);
1.32      nicm      666:
1.37      nicm      667:        wp->pipe_off = EVBUFFER_LENGTH(wp->event->input);
1.1       nicm      668: }
                    669:
                    670: void
                    671: window_pane_key(struct window_pane *wp, struct client *c, int key)
                    672: {
1.27      nicm      673:        struct window_pane      *wp2;
                    674:
1.30      nicm      675:        if (!window_pane_visible(wp))
1.3       nicm      676:                return;
                    677:
1.1       nicm      678:        if (wp->mode != NULL) {
                    679:                if (wp->mode->key != NULL)
                    680:                        wp->mode->key(wp, c, key);
1.27      nicm      681:                return;
1.30      nicm      682:        }
1.27      nicm      683:
1.30      nicm      684:        if (wp->fd == -1)
                    685:                return;
1.27      nicm      686:        input_key(wp, key);
                    687:        if (options_get_number(&wp->window->options, "synchronize-panes")) {
                    688:                TAILQ_FOREACH(wp2, &wp->window->panes, entry) {
                    689:                        if (wp2 == wp || wp2->mode != NULL)
                    690:                                continue;
                    691:                        if (wp2->fd != -1 && window_pane_visible(wp2))
                    692:                                input_key(wp2, key);
                    693:                }
                    694:        }
1.1       nicm      695: }
                    696:
                    697: void
                    698: window_pane_mouse(
1.31      nicm      699:     struct window_pane *wp, struct client *c, struct mouse_event *m)
1.1       nicm      700: {
1.30      nicm      701:        if (!window_pane_visible(wp))
1.3       nicm      702:                return;
                    703:
1.31      nicm      704:        if (m->x < wp->xoff || m->x >= wp->xoff + wp->sx)
1.1       nicm      705:                return;
1.31      nicm      706:        if (m->y < wp->yoff || m->y >= wp->yoff + wp->sy)
1.1       nicm      707:                return;
1.31      nicm      708:        m->x -= wp->xoff;
                    709:        m->y -= wp->yoff;
1.1       nicm      710:
                    711:        if (wp->mode != NULL) {
                    712:                if (wp->mode->mouse != NULL)
1.31      nicm      713:                        wp->mode->mouse(wp, c, m);
1.30      nicm      714:        } else if (wp->fd != -1)
1.31      nicm      715:                input_mouse(wp, m);
1.10      nicm      716: }
                    717:
                    718: int
                    719: window_pane_visible(struct window_pane *wp)
                    720: {
                    721:        struct window   *w = wp->window;
                    722:
                    723:        if (wp->xoff >= w->sx || wp->yoff >= w->sy)
                    724:                return (0);
                    725:        if (wp->xoff + wp->sx > w->sx || wp->yoff + wp->sy > w->sy)
                    726:                return (0);
                    727:        return (1);
1.1       nicm      728: }
                    729:
                    730: char *
1.5       nicm      731: window_pane_search(struct window_pane *wp, const char *searchstr, u_int *lineno)
1.1       nicm      732: {
1.4       nicm      733:        struct screen   *s = &wp->base;
1.5       nicm      734:        char            *newsearchstr, *line, *msg;
1.4       nicm      735:        u_int            i;
                    736:
1.5       nicm      737:        msg = NULL;
                    738:        xasprintf(&newsearchstr, "*%s*", searchstr);
                    739:
1.4       nicm      740:        for (i = 0; i < screen_size_y(s); i++) {
                    741:                line = grid_view_string_cells(s->grid, 0, i, screen_size_x(s));
1.5       nicm      742:                if (fnmatch(newsearchstr, line, 0) == 0) {
                    743:                        msg = line;
                    744:                        if (lineno != NULL)
                    745:                                *lineno = i;
                    746:                        break;
                    747:                }
1.4       nicm      748:                xfree(line);
                    749:        }
1.5       nicm      750:
                    751:        xfree(newsearchstr);
                    752:        return (msg);
1.1       nicm      753: }