tmux/window.c

1601 lines
33 KiB
C

/* $OpenBSD$ */
/*
* Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
* IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/types.h>
#include <sys/ioctl.h>
#include <ctype.h>
#include <errno.h>
#include <fcntl.h>
#include <fnmatch.h>
#include <regex.h>
#include <signal.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <unistd.h>
#include "tmux.h"
/*
* Each window is attached to a number of panes, each of which is a pty. This
* file contains code to handle them.
*
* A pane has two buffers attached, these are filled and emptied by the main
* server poll loop. Output data is received from pty's in screen format,
* translated and returned as a series of escape sequences and strings via
* input_parse (in input.c). Input data is received as key codes and written
* directly via input_key.
*
* Each pane also has a "virtual" screen (screen.c) which contains the current
* state and is redisplayed when the window is reattached to a client.
*
* Windows are stored directly on a global array and wrapped in any number of
* winlink structs to be linked onto local session RB trees. A reference count
* is maintained and a window removed from the global list and destroyed when
* it reaches zero.
*/
/* Global window list. */
struct windows windows;
/* Global panes tree. */
struct window_pane_tree all_window_panes;
static u_int next_window_pane_id;
static u_int next_window_id;
static u_int next_active_point;
struct window_pane_input_data {
struct cmdq_item *item;
u_int wp;
};
static struct window_pane *window_pane_create(struct window *, u_int, u_int,
u_int);
static void window_pane_destroy(struct window_pane *);
RB_GENERATE(windows, window, entry, window_cmp);
RB_GENERATE(winlinks, winlink, entry, winlink_cmp);
RB_GENERATE(window_pane_tree, window_pane, tree_entry, window_pane_cmp);
int
window_cmp(struct window *w1, struct window *w2)
{
return (w1->id - w2->id);
}
int
winlink_cmp(struct winlink *wl1, struct winlink *wl2)
{
return (wl1->idx - wl2->idx);
}
int
window_pane_cmp(struct window_pane *wp1, struct window_pane *wp2)
{
return (wp1->id - wp2->id);
}
struct winlink *
winlink_find_by_window(struct winlinks *wwl, struct window *w)
{
struct winlink *wl;
RB_FOREACH(wl, winlinks, wwl) {
if (wl->window == w)
return (wl);
}
return (NULL);
}
struct winlink *
winlink_find_by_index(struct winlinks *wwl, int idx)
{
struct winlink wl;
if (idx < 0)
fatalx("bad index");
wl.idx = idx;
return (RB_FIND(winlinks, wwl, &wl));
}
struct winlink *
winlink_find_by_window_id(struct winlinks *wwl, u_int id)
{
struct winlink *wl;
RB_FOREACH(wl, winlinks, wwl) {
if (wl->window->id == id)
return (wl);
}
return (NULL);
}
static int
winlink_next_index(struct winlinks *wwl, int idx)
{
int i;
i = idx;
do {
if (winlink_find_by_index(wwl, i) == NULL)
return (i);
if (i == INT_MAX)
i = 0;
else
i++;
} while (i != idx);
return (-1);
}
u_int
winlink_count(struct winlinks *wwl)
{
struct winlink *wl;
u_int n;
n = 0;
RB_FOREACH(wl, winlinks, wwl)
n++;
return (n);
}
struct winlink *
winlink_add(struct winlinks *wwl, int idx)
{
struct winlink *wl;
if (idx < 0) {
if ((idx = winlink_next_index(wwl, -idx - 1)) == -1)
return (NULL);
} else if (winlink_find_by_index(wwl, idx) != NULL)
return (NULL);
wl = xcalloc(1, sizeof *wl);
wl->idx = idx;
RB_INSERT(winlinks, wwl, wl);
return (wl);
}
void
winlink_set_window(struct winlink *wl, struct window *w)
{
if (wl->window != NULL) {
TAILQ_REMOVE(&wl->window->winlinks, wl, wentry);
window_remove_ref(wl->window, __func__);
}
TAILQ_INSERT_TAIL(&w->winlinks, wl, wentry);
wl->window = w;
window_add_ref(w, __func__);
}
void
winlink_remove(struct winlinks *wwl, struct winlink *wl)
{
struct window *w = wl->window;
if (w != NULL) {
TAILQ_REMOVE(&w->winlinks, wl, wentry);
window_remove_ref(w, __func__);
}
RB_REMOVE(winlinks, wwl, wl);
free(wl);
}
struct winlink *
winlink_next(struct winlink *wl)
{
return (RB_NEXT(winlinks, wwl, wl));
}
struct winlink *
winlink_previous(struct winlink *wl)
{
return (RB_PREV(winlinks, wwl, wl));
}
struct winlink *
winlink_next_by_number(struct winlink *wl, struct session *s, int n)
{
for (; n > 0; n--) {
if ((wl = RB_NEXT(winlinks, wwl, wl)) == NULL)
wl = RB_MIN(winlinks, &s->windows);
}
return (wl);
}
struct winlink *
winlink_previous_by_number(struct winlink *wl, struct session *s, int n)
{
for (; n > 0; n--) {
if ((wl = RB_PREV(winlinks, wwl, wl)) == NULL)
wl = RB_MAX(winlinks, &s->windows);
}
return (wl);
}
void
winlink_stack_push(struct winlink_stack *stack, struct winlink *wl)
{
if (wl == NULL)
return;
winlink_stack_remove(stack, wl);
TAILQ_INSERT_HEAD(stack, wl, sentry);
}
void
winlink_stack_remove(struct winlink_stack *stack, struct winlink *wl)
{
struct winlink *wl2;
if (wl == NULL)
return;
TAILQ_FOREACH(wl2, stack, sentry) {
if (wl2 == wl) {
TAILQ_REMOVE(stack, wl, sentry);
return;
}
}
}
struct window *
window_find_by_id_str(const char *s)
{
const char *errstr;
u_int id;
if (*s != '@')
return (NULL);
id = strtonum(s + 1, 0, UINT_MAX, &errstr);
if (errstr != NULL)
return (NULL);
return (window_find_by_id(id));
}
struct window *
window_find_by_id(u_int id)
{
struct window w;
w.id = id;
return (RB_FIND(windows, &windows, &w));
}
void
window_update_activity(struct window *w)
{
gettimeofday(&w->activity_time, NULL);
alerts_queue(w, WINDOW_ACTIVITY);
}
struct window *
window_create(u_int sx, u_int sy, u_int xpixel, u_int ypixel)
{
struct window *w;
if (xpixel == 0)
xpixel = DEFAULT_XPIXEL;
if (ypixel == 0)
ypixel = DEFAULT_YPIXEL;
w = xcalloc(1, sizeof *w);
w->name = xstrdup("");
w->flags = 0;
TAILQ_INIT(&w->panes);
w->active = NULL;
w->lastlayout = -1;
w->layout_root = NULL;
w->sx = sx;
w->sy = sy;
w->xpixel = xpixel;
w->ypixel = ypixel;
w->options = options_create(global_w_options);
w->references = 0;
TAILQ_INIT(&w->winlinks);
w->id = next_window_id++;
RB_INSERT(windows, &windows, w);
window_update_activity(w);
log_debug("%s: @%u create %ux%u (%ux%u)", __func__, w->id, sx, sy,
w->xpixel, w->ypixel);
return (w);
}
static void
window_destroy(struct window *w)
{
log_debug("window @%u destroyed (%d references)", w->id, w->references);
RB_REMOVE(windows, &windows, w);
if (w->layout_root != NULL)
layout_free_cell(w->layout_root);
if (w->saved_layout_root != NULL)
layout_free_cell(w->saved_layout_root);
free(w->old_layout);
window_destroy_panes(w);
if (event_initialized(&w->name_event))
evtimer_del(&w->name_event);
if (event_initialized(&w->alerts_timer))
evtimer_del(&w->alerts_timer);
if (event_initialized(&w->offset_timer))
event_del(&w->offset_timer);
options_free(w->options);
free(w->name);
free(w);
}
int
window_pane_destroy_ready(struct window_pane *wp)
{
int n;
if (wp->pipe_fd != -1) {
if (EVBUFFER_LENGTH(wp->pipe_event->output) != 0)
return (0);
if (ioctl(wp->fd, FIONREAD, &n) != -1 && n > 0)
return (0);
}
if (~wp->flags & PANE_EXITED)
return (0);
return (1);
}
void
window_add_ref(struct window *w, const char *from)
{
w->references++;
log_debug("%s: @%u %s, now %d", __func__, w->id, from, w->references);
}
void
window_remove_ref(struct window *w, const char *from)
{
w->references--;
log_debug("%s: @%u %s, now %d", __func__, w->id, from, w->references);
if (w->references == 0)
window_destroy(w);
}
void
window_set_name(struct window *w, const char *new_name)
{
free(w->name);
utf8_stravis(&w->name, new_name, VIS_OCTAL|VIS_CSTYLE|VIS_TAB|VIS_NL);
notify_window("window-renamed", w);
}
void
window_resize(struct window *w, u_int sx, u_int sy, int xpixel, int ypixel)
{
if (xpixel == 0)
xpixel = DEFAULT_XPIXEL;
if (ypixel == 0)
ypixel = DEFAULT_YPIXEL;
log_debug("%s: @%u resize %ux%u (%ux%u)", __func__, w->id, sx, sy,
xpixel == -1 ? w->xpixel : (u_int)xpixel,
ypixel == -1 ? w->ypixel : (u_int)ypixel);
w->sx = sx;
w->sy = sy;
if (xpixel != -1)
w->xpixel = xpixel;
if (ypixel != -1)
w->ypixel = ypixel;
}
void
window_pane_send_resize(struct window_pane *wp, int force)
{
struct window *w = wp->window;
struct winsize ws;
u_int sy;
if (wp->fd == -1)
return;
if (!force)
sy = wp->sy;
else if (wp->sy <= 1)
sy = wp->sy + 1;
else
sy = wp->sy - 1;
log_debug("%s: %%%u resize to %u,%u", __func__, wp->id, wp->sx, sy);
memset(&ws, 0, sizeof ws);
ws.ws_col = wp->sx;
ws.ws_row = sy;
ws.ws_xpixel = w->xpixel * ws.ws_col;
ws.ws_ypixel = w->ypixel * ws.ws_row;
if (ioctl(wp->fd, TIOCSWINSZ, &ws) == -1)
#ifdef __sun
/*
* Some versions of Solaris apparently can return an error when
* resizing; don't know why this happens, can't reproduce on
* other platforms and ignoring it doesn't seem to cause any
* issues.
*/
if (errno != EINVAL && errno != ENXIO)
#endif
fatal("ioctl failed");
}
int
window_has_pane(struct window *w, struct window_pane *wp)
{
struct window_pane *wp1;
TAILQ_FOREACH(wp1, &w->panes, entry) {
if (wp1 == wp)
return (1);
}
return (0);
}
int
window_set_active_pane(struct window *w, struct window_pane *wp, int notify)
{
log_debug("%s: pane %%%u", __func__, wp->id);
if (wp == w->active)
return (0);
w->last = w->active;
w->active = wp;
w->active->active_point = next_active_point++;
w->active->flags |= PANE_CHANGED;
tty_update_window_offset(w);
if (notify)
notify_window("window-pane-changed", w);
return (1);
}
void
window_redraw_active_switch(struct window *w, struct window_pane *wp)
{
struct grid_cell *gc1, *gc2;
int c1, c2;
if (wp == w->active)
return;
for (;;) {
/*
* If the active and inactive styles or palettes are different,
* need to redraw the panes.
*/
gc1 = &wp->cached_gc;
gc2 = &wp->cached_active_gc;
if (!grid_cells_look_equal(gc1, gc2))
wp->flags |= PANE_REDRAW;
else {
c1 = window_pane_get_palette(wp, gc1->fg);
c2 = window_pane_get_palette(wp, gc2->fg);
if (c1 != c2)
wp->flags |= PANE_REDRAW;
else {
c1 = window_pane_get_palette(wp, gc1->bg);
c2 = window_pane_get_palette(wp, gc2->bg);
if (c1 != c2)
wp->flags |= PANE_REDRAW;
}
}
if (wp == w->active)
break;
wp = w->active;
}
}
struct window_pane *
window_get_active_at(struct window *w, u_int x, u_int y)
{
struct window_pane *wp;
TAILQ_FOREACH(wp, &w->panes, entry) {
if (!window_pane_visible(wp))
continue;
if (x < wp->xoff || x > wp->xoff + wp->sx)
continue;
if (y < wp->yoff || y > wp->yoff + wp->sy)
continue;
return (wp);
}
return (NULL);
}
struct window_pane *
window_find_string(struct window *w, const char *s)
{
u_int x, y, top = 0, bottom = w->sy - 1;
int status;
x = w->sx / 2;
y = w->sy / 2;
status = options_get_number(w->options, "pane-border-status");
if (status == PANE_STATUS_TOP)
top++;
else if (status == PANE_STATUS_BOTTOM)
bottom--;
if (strcasecmp(s, "top") == 0)
y = top;
else if (strcasecmp(s, "bottom") == 0)
y = bottom;
else if (strcasecmp(s, "left") == 0)
x = 0;
else if (strcasecmp(s, "right") == 0)
x = w->sx - 1;
else if (strcasecmp(s, "top-left") == 0) {
x = 0;
y = top;
} else if (strcasecmp(s, "top-right") == 0) {
x = w->sx - 1;
y = top;
} else if (strcasecmp(s, "bottom-left") == 0) {
x = 0;
y = bottom;
} else if (strcasecmp(s, "bottom-right") == 0) {
x = w->sx - 1;
y = bottom;
} else
return (NULL);
return (window_get_active_at(w, x, y));
}
int
window_zoom(struct window_pane *wp)
{
struct window *w = wp->window;
struct window_pane *wp1;
if (w->flags & WINDOW_ZOOMED)
return (-1);
if (window_count_panes(w) == 1)
return (-1);
if (w->active != wp)
window_set_active_pane(w, wp, 1);
TAILQ_FOREACH(wp1, &w->panes, entry) {
wp1->saved_layout_cell = wp1->layout_cell;
wp1->layout_cell = NULL;
}
w->saved_layout_root = w->layout_root;
layout_init(w, wp);
w->flags |= WINDOW_ZOOMED;
notify_window("window-layout-changed", w);
return (0);
}
int
window_unzoom(struct window *w)
{
struct window_pane *wp;
if (!(w->flags & WINDOW_ZOOMED))
return (-1);
w->flags &= ~WINDOW_ZOOMED;
layout_free(w);
w->layout_root = w->saved_layout_root;
w->saved_layout_root = NULL;
TAILQ_FOREACH(wp, &w->panes, entry) {
wp->layout_cell = wp->saved_layout_cell;
wp->saved_layout_cell = NULL;
}
layout_fix_panes(w, NULL);
notify_window("window-layout-changed", w);
return (0);
}
int
window_push_zoom(struct window *w, int always, int flag)
{
log_debug("%s: @%u %d", __func__, w->id,
flag && (w->flags & WINDOW_ZOOMED));
if (flag && (always || (w->flags & WINDOW_ZOOMED)))
w->flags |= WINDOW_WASZOOMED;
else
w->flags &= ~WINDOW_WASZOOMED;
return (window_unzoom(w) == 0);
}
int
window_pop_zoom(struct window *w)
{
log_debug("%s: @%u %d", __func__, w->id,
!!(w->flags & WINDOW_WASZOOMED));
if (w->flags & WINDOW_WASZOOMED)
return (window_zoom(w->active) == 0);
return (0);
}
struct window_pane *
window_add_pane(struct window *w, struct window_pane *other, u_int hlimit,
int flags)
{
struct window_pane *wp;
if (other == NULL)
other = w->active;
wp = window_pane_create(w, w->sx, w->sy, hlimit);
if (TAILQ_EMPTY(&w->panes)) {
log_debug("%s: @%u at start", __func__, w->id);
TAILQ_INSERT_HEAD(&w->panes, wp, entry);
} else if (flags & SPAWN_BEFORE) {
log_debug("%s: @%u before %%%u", __func__, w->id, wp->id);
if (flags & SPAWN_FULLSIZE)
TAILQ_INSERT_HEAD(&w->panes, wp, entry);
else
TAILQ_INSERT_BEFORE(other, wp, entry);
} else {
log_debug("%s: @%u after %%%u", __func__, w->id, wp->id);
if (flags & SPAWN_FULLSIZE)
TAILQ_INSERT_TAIL(&w->panes, wp, entry);
else
TAILQ_INSERT_AFTER(&w->panes, other, wp, entry);
}
return (wp);
}
void
window_lost_pane(struct window *w, struct window_pane *wp)
{
log_debug("%s: @%u pane %%%u", __func__, w->id, wp->id);
if (wp == marked_pane.wp)
server_clear_marked();
if (wp == w->active) {
w->active = w->last;
w->last = NULL;
if (w->active == NULL) {
w->active = TAILQ_PREV(wp, window_panes, entry);
if (w->active == NULL)
w->active = TAILQ_NEXT(wp, entry);
}
if (w->active != NULL) {
w->active->flags |= PANE_CHANGED;
notify_window("window-pane-changed", w);
}
} else if (wp == w->last)
w->last = NULL;
}
void
window_remove_pane(struct window *w, struct window_pane *wp)
{
window_lost_pane(w, wp);
TAILQ_REMOVE(&w->panes, wp, entry);
window_pane_destroy(wp);
}
struct window_pane *
window_pane_at_index(struct window *w, u_int idx)
{
struct window_pane *wp;
u_int n;
n = options_get_number(w->options, "pane-base-index");
TAILQ_FOREACH(wp, &w->panes, entry) {
if (n == idx)
return (wp);
n++;
}
return (NULL);
}
struct window_pane *
window_pane_next_by_number(struct window *w, struct window_pane *wp, u_int n)
{
for (; n > 0; n--) {
if ((wp = TAILQ_NEXT(wp, entry)) == NULL)
wp = TAILQ_FIRST(&w->panes);
}
return (wp);
}
struct window_pane *
window_pane_previous_by_number(struct window *w, struct window_pane *wp,
u_int n)
{
for (; n > 0; n--) {
if ((wp = TAILQ_PREV(wp, window_panes, entry)) == NULL)
wp = TAILQ_LAST(&w->panes, window_panes);
}
return (wp);
}
int
window_pane_index(struct window_pane *wp, u_int *i)
{
struct window_pane *wq;
struct window *w = wp->window;
*i = options_get_number(w->options, "pane-base-index");
TAILQ_FOREACH(wq, &w->panes, entry) {
if (wp == wq) {
return (0);
}
(*i)++;
}
return (-1);
}
u_int
window_count_panes(struct window *w)
{
struct window_pane *wp;
u_int n;
n = 0;
TAILQ_FOREACH(wp, &w->panes, entry)
n++;
return (n);
}
void
window_destroy_panes(struct window *w)
{
struct window_pane *wp;
while (!TAILQ_EMPTY(&w->panes)) {
wp = TAILQ_FIRST(&w->panes);
TAILQ_REMOVE(&w->panes, wp, entry);
window_pane_destroy(wp);
}
}
const char *
window_printable_flags(struct winlink *wl, int escape)
{
struct session *s = wl->session;
static char flags[32];
int pos;
pos = 0;
if (wl->flags & WINLINK_ACTIVITY) {
flags[pos++] = '#';
if (escape)
flags[pos++] = '#';
}
if (wl->flags & WINLINK_BELL)
flags[pos++] = '!';
if (wl->flags & WINLINK_SILENCE)
flags[pos++] = '~';
if (wl == s->curw)
flags[pos++] = '*';
if (wl == TAILQ_FIRST(&s->lastw))
flags[pos++] = '-';
if (server_check_marked() && wl == marked_pane.wl)
flags[pos++] = 'M';
if (wl->window->flags & WINDOW_ZOOMED)
flags[pos++] = 'Z';
flags[pos] = '\0';
return (flags);
}
struct window_pane *
window_pane_find_by_id_str(const char *s)
{
const char *errstr;
u_int id;
if (*s != '%')
return (NULL);
id = strtonum(s + 1, 0, UINT_MAX, &errstr);
if (errstr != NULL)
return (NULL);
return (window_pane_find_by_id(id));
}
struct window_pane *
window_pane_find_by_id(u_int id)
{
struct window_pane wp;
wp.id = id;
return (RB_FIND(window_pane_tree, &all_window_panes, &wp));
}
static struct window_pane *
window_pane_create(struct window *w, u_int sx, u_int sy, u_int hlimit)
{
struct window_pane *wp;
char host[HOST_NAME_MAX + 1];
wp = xcalloc(1, sizeof *wp);
wp->window = w;
wp->options = options_create(w->options);
wp->flags = PANE_STYLECHANGED;
wp->id = next_window_pane_id++;
RB_INSERT(window_pane_tree, &all_window_panes, wp);
wp->argc = 0;
wp->argv = NULL;
wp->shell = NULL;
wp->cwd = NULL;
wp->fd = -1;
wp->event = NULL;
wp->fg = 8;
wp->bg = 8;
TAILQ_INIT(&wp->modes);
wp->layout_cell = NULL;
wp->xoff = 0;
wp->yoff = 0;
wp->sx = sx;
wp->sy = sy;
wp->pipe_fd = -1;
wp->pipe_event = NULL;
screen_init(&wp->base, sx, sy, hlimit);
wp->screen = &wp->base;
screen_init(&wp->status_screen, 1, 1, 0);
if (gethostname(host, sizeof host) == 0)
screen_set_title(&wp->base, host);
return (wp);
}
static void
window_pane_destroy(struct window_pane *wp)
{
window_pane_reset_mode_all(wp);
free(wp->searchstr);
if (wp->fd != -1) {
#ifdef HAVE_UTEMPTER
utempter_remove_record(wp->fd);
#endif
bufferevent_free(wp->event);
close(wp->fd);
}
if (wp->ictx != NULL)
input_free(wp->ictx);
screen_free(&wp->status_screen);
screen_free(&wp->base);
if (wp->pipe_fd != -1) {
bufferevent_free(wp->pipe_event);
close(wp->pipe_fd);
}
if (event_initialized(&wp->resize_timer))
event_del(&wp->resize_timer);
if (event_initialized(&wp->force_timer))
event_del(&wp->force_timer);
RB_REMOVE(window_pane_tree, &all_window_panes, wp);
options_free(wp->options);
free((void *)wp->cwd);
free(wp->shell);
cmd_free_argv(wp->argc, wp->argv);
free(wp->palette);
free(wp);
}
static void
window_pane_read_callback(__unused struct bufferevent *bufev, void *data)
{
struct window_pane *wp = data;
struct evbuffer *evb = wp->event->input;
struct window_pane_offset *wpo = &wp->pipe_offset;
size_t size = EVBUFFER_LENGTH(evb);
char *new_data;
size_t new_size;
struct client *c;
if (wp->pipe_fd != -1) {
new_data = window_pane_get_new_data(wp, wpo, &new_size);
if (new_size > 0) {
bufferevent_write(wp->pipe_event, new_data, new_size);
window_pane_update_used_data(wp, wpo, new_size);
}
}
log_debug("%%%u has %zu bytes", wp->id, size);
TAILQ_FOREACH(c, &clients, entry) {
if (c->session != NULL && (c->flags & CLIENT_CONTROL))
control_write_output(c, wp);
}
input_parse_pane(wp);
bufferevent_disable(wp->event, EV_READ);
}
static void
window_pane_error_callback(__unused struct bufferevent *bufev,
__unused short what, void *data)
{
struct window_pane *wp = data;
log_debug("%%%u error", wp->id);
wp->flags |= PANE_EXITED;
if (window_pane_destroy_ready(wp))
server_destroy_pane(wp, 1);
}
void
window_pane_set_event(struct window_pane *wp)
{
setblocking(wp->fd, 0);
wp->event = bufferevent_new(wp->fd, window_pane_read_callback,
NULL, window_pane_error_callback, wp);
wp->ictx = input_init(wp, wp->event);
bufferevent_enable(wp->event, EV_READ|EV_WRITE);
}
void
window_pane_resize(struct window_pane *wp, u_int sx, u_int sy)
{
struct window_mode_entry *wme;
if (sx == wp->sx && sy == wp->sy)
return;
wp->sx = sx;
wp->sy = sy;
log_debug("%s: %%%u resize %ux%u", __func__, wp->id, sx, sy);
screen_resize(&wp->base, sx, sy, wp->base.saved_grid == NULL);
wme = TAILQ_FIRST(&wp->modes);
if (wme != NULL && wme->mode->resize != NULL)
wme->mode->resize(wme, sx, sy);
/*
* If the pane has already been resized, set the force flag and make
* the application resize twice to force it to redraw.
*/
if (wp->flags & PANE_RESIZE)
wp->flags |= PANE_RESIZEFORCE;
wp->flags |= PANE_RESIZE;
}
void
window_pane_set_palette(struct window_pane *wp, u_int n, int colour)
{
if (n > 0xff)
return;
if (wp->palette == NULL)
wp->palette = xcalloc(0x100, sizeof *wp->palette);
wp->palette[n] = colour;
wp->flags |= PANE_REDRAW;
}
void
window_pane_unset_palette(struct window_pane *wp, u_int n)
{
if (n > 0xff || wp->palette == NULL)
return;
wp->palette[n] = 0;
wp->flags |= PANE_REDRAW;
}
void
window_pane_reset_palette(struct window_pane *wp)
{
if (wp->palette == NULL)
return;
free(wp->palette);
wp->palette = NULL;
wp->flags |= PANE_REDRAW;
}
int
window_pane_get_palette(struct window_pane *wp, int c)
{
int new;
if (wp == NULL || wp->palette == NULL)
return (-1);
new = -1;
if (c < 8)
new = wp->palette[c];
else if (c >= 90 && c <= 97)
new = wp->palette[8 + c - 90];
else if (c & COLOUR_FLAG_256)
new = wp->palette[c & ~COLOUR_FLAG_256];
if (new == 0)
return (-1);
return (new);
}
int
window_pane_set_mode(struct window_pane *wp, struct window_pane *swp,
const struct window_mode *mode, struct cmd_find_state *fs,
struct args *args)
{
struct window_mode_entry *wme;
if (!TAILQ_EMPTY(&wp->modes) && TAILQ_FIRST(&wp->modes)->mode == mode)
return (1);
TAILQ_FOREACH(wme, &wp->modes, entry) {
if (wme->mode == mode)
break;
}
if (wme != NULL) {
TAILQ_REMOVE(&wp->modes, wme, entry);
TAILQ_INSERT_HEAD(&wp->modes, wme, entry);
} else {
wme = xcalloc(1, sizeof *wme);
wme->wp = wp;
wme->swp = swp;
wme->mode = mode;
wme->prefix = 1;
TAILQ_INSERT_HEAD(&wp->modes, wme, entry);
wme->screen = wme->mode->init(wme, fs, args);
}
wp->screen = wme->screen;
wp->flags |= (PANE_REDRAW|PANE_CHANGED);
server_redraw_window_borders(wp->window);
server_status_window(wp->window);
notify_pane("pane-mode-changed", wp);
return (0);
}
void
window_pane_reset_mode(struct window_pane *wp)
{
struct window_mode_entry *wme, *next;
if (TAILQ_EMPTY(&wp->modes))
return;
wme = TAILQ_FIRST(&wp->modes);
TAILQ_REMOVE(&wp->modes, wme, entry);
wme->mode->free(wme);
free(wme);
next = TAILQ_FIRST(&wp->modes);
if (next == NULL) {
log_debug("%s: no next mode", __func__);
wp->screen = &wp->base;
} else {
log_debug("%s: next mode is %s", __func__, next->mode->name);
wp->screen = next->screen;
if (next->mode->resize != NULL)
next->mode->resize(next, wp->sx, wp->sy);
}
wp->flags |= (PANE_REDRAW|PANE_CHANGED);
server_redraw_window_borders(wp->window);
server_status_window(wp->window);
notify_pane("pane-mode-changed", wp);
}
void
window_pane_reset_mode_all(struct window_pane *wp)
{
while (!TAILQ_EMPTY(&wp->modes))
window_pane_reset_mode(wp);
}
static void
window_pane_copy_key(struct window_pane *wp, key_code key)
{
struct window_pane *loop;
TAILQ_FOREACH(loop, &wp->window->panes, entry) {
if (loop != wp &&
TAILQ_EMPTY(&loop->modes) &&
loop->fd != -1 &&
(~loop->flags & PANE_INPUTOFF) &&
window_pane_visible(loop) &&
options_get_number(loop->options, "synchronize-panes"))
input_key_pane(loop, key, NULL);
}
}
int
window_pane_key(struct window_pane *wp, struct client *c, struct session *s,
struct winlink *wl, key_code key, struct mouse_event *m)
{
struct window_mode_entry *wme;
if (KEYC_IS_MOUSE(key) && m == NULL)
return (-1);
wme = TAILQ_FIRST(&wp->modes);
if (wme != NULL) {
if (wme->mode->key != NULL && c != NULL) {
key &= ~KEYC_MASK_FLAGS;
wme->mode->key(wme, c, s, wl, key, m);
}
return (0);
}
if (wp->fd == -1 || wp->flags & PANE_INPUTOFF)
return (0);
if (input_key_pane(wp, key, m) != 0)
return (-1);
if (KEYC_IS_MOUSE(key))
return (0);
if (options_get_number(wp->options, "synchronize-panes"))
window_pane_copy_key(wp, key);
return (0);
}
int
window_pane_visible(struct window_pane *wp)
{
if (~wp->window->flags & WINDOW_ZOOMED)
return (1);
return (wp == wp->window->active);
}
u_int
window_pane_search(struct window_pane *wp, const char *term, int regex,
int ignore)
{
struct screen *s = &wp->base;
regex_t r;
char *new = NULL, *line;
u_int i;
int flags = 0, found;
size_t n;
if (!regex) {
if (ignore)
flags |= FNM_CASEFOLD;
xasprintf(&new, "*%s*", term);
} else {
if (ignore)
flags |= REG_ICASE;
if (regcomp(&r, term, flags|REG_EXTENDED) != 0)
return (0);
}
for (i = 0; i < screen_size_y(s); i++) {
line = grid_view_string_cells(s->grid, 0, i, screen_size_x(s));
for (n = strlen(line); n > 0; n--) {
if (!isspace((u_char)line[n - 1]))
break;
line[n - 1] = '\0';
}
log_debug("%s: %s", __func__, line);
if (!regex)
found = (fnmatch(new, line, flags) == 0);
else
found = (regexec(&r, line, 0, NULL, 0) == 0);
free(line);
if (found)
break;
}
if (!regex)
free(new);
else
regfree(&r);
if (i == screen_size_y(s))
return (0);
return (i + 1);
}
/* Get MRU pane from a list. */
static struct window_pane *
window_pane_choose_best(struct window_pane **list, u_int size)
{
struct window_pane *next, *best;
u_int i;
if (size == 0)
return (NULL);
best = list[0];
for (i = 1; i < size; i++) {
next = list[i];
if (next->active_point > best->active_point)
best = next;
}
return (best);
}
/*
* Find the pane directly above another. We build a list of those adjacent to
* top edge and then choose the best.
*/
struct window_pane *
window_pane_find_up(struct window_pane *wp)
{
struct window *w;
struct window_pane *next, *best, **list;
u_int edge, left, right, end, size;
int status, found;
if (wp == NULL)
return (NULL);
w = wp->window;
status = options_get_number(w->options, "pane-border-status");
list = NULL;
size = 0;
edge = wp->yoff;
if (status == PANE_STATUS_TOP) {
if (edge == 1)
edge = w->sy + 1;
} else if (status == PANE_STATUS_BOTTOM) {
if (edge == 0)
edge = w->sy;
} else {
if (edge == 0)
edge = w->sy + 1;
}
left = wp->xoff;
right = wp->xoff + wp->sx;
TAILQ_FOREACH(next, &w->panes, entry) {
if (next == wp)
continue;
if (next->yoff + next->sy + 1 != edge)
continue;
end = next->xoff + next->sx - 1;
found = 0;
if (next->xoff < left && end > right)
found = 1;
else if (next->xoff >= left && next->xoff <= right)
found = 1;
else if (end >= left && end <= right)
found = 1;
if (!found)
continue;
list = xreallocarray(list, size + 1, sizeof *list);
list[size++] = next;
}
best = window_pane_choose_best(list, size);
free(list);
return (best);
}
/* Find the pane directly below another. */
struct window_pane *
window_pane_find_down(struct window_pane *wp)
{
struct window *w;
struct window_pane *next, *best, **list;
u_int edge, left, right, end, size;
int status, found;
if (wp == NULL)
return (NULL);
w = wp->window;
status = options_get_number(w->options, "pane-border-status");
list = NULL;
size = 0;
edge = wp->yoff + wp->sy + 1;
if (status == PANE_STATUS_TOP) {
if (edge >= w->sy)
edge = 1;
} else if (status == PANE_STATUS_BOTTOM) {
if (edge >= w->sy - 1)
edge = 0;
} else {
if (edge >= w->sy)
edge = 0;
}
left = wp->xoff;
right = wp->xoff + wp->sx;
TAILQ_FOREACH(next, &w->panes, entry) {
if (next == wp)
continue;
if (next->yoff != edge)
continue;
end = next->xoff + next->sx - 1;
found = 0;
if (next->xoff < left && end > right)
found = 1;
else if (next->xoff >= left && next->xoff <= right)
found = 1;
else if (end >= left && end <= right)
found = 1;
if (!found)
continue;
list = xreallocarray(list, size + 1, sizeof *list);
list[size++] = next;
}
best = window_pane_choose_best(list, size);
free(list);
return (best);
}
/* Find the pane directly to the left of another. */
struct window_pane *
window_pane_find_left(struct window_pane *wp)
{
struct window *w;
struct window_pane *next, *best, **list;
u_int edge, top, bottom, end, size;
int found;
if (wp == NULL)
return (NULL);
w = wp->window;
list = NULL;
size = 0;
edge = wp->xoff;
if (edge == 0)
edge = w->sx + 1;
top = wp->yoff;
bottom = wp->yoff + wp->sy;
TAILQ_FOREACH(next, &w->panes, entry) {
if (next == wp)
continue;
if (next->xoff + next->sx + 1 != edge)
continue;
end = next->yoff + next->sy - 1;
found = 0;
if (next->yoff < top && end > bottom)
found = 1;
else if (next->yoff >= top && next->yoff <= bottom)
found = 1;
else if (end >= top && end <= bottom)
found = 1;
if (!found)
continue;
list = xreallocarray(list, size + 1, sizeof *list);
list[size++] = next;
}
best = window_pane_choose_best(list, size);
free(list);
return (best);
}
/* Find the pane directly to the right of another. */
struct window_pane *
window_pane_find_right(struct window_pane *wp)
{
struct window *w;
struct window_pane *next, *best, **list;
u_int edge, top, bottom, end, size;
int found;
if (wp == NULL)
return (NULL);
w = wp->window;
list = NULL;
size = 0;
edge = wp->xoff + wp->sx + 1;
if (edge >= w->sx)
edge = 0;
top = wp->yoff;
bottom = wp->yoff + wp->sy;
TAILQ_FOREACH(next, &w->panes, entry) {
if (next == wp)
continue;
if (next->xoff != edge)
continue;
end = next->yoff + next->sy - 1;
found = 0;
if (next->yoff < top && end > bottom)
found = 1;
else if (next->yoff >= top && next->yoff <= bottom)
found = 1;
else if (end >= top && end <= bottom)
found = 1;
if (!found)
continue;
list = xreallocarray(list, size + 1, sizeof *list);
list[size++] = next;
}
best = window_pane_choose_best(list, size);
free(list);
return (best);
}
/* Clear alert flags for a winlink */
void
winlink_clear_flags(struct winlink *wl)
{
struct winlink *loop;
wl->window->flags &= ~WINDOW_ALERTFLAGS;
TAILQ_FOREACH(loop, &wl->window->winlinks, wentry) {
if ((loop->flags & WINLINK_ALERTFLAGS) != 0) {
loop->flags &= ~WINLINK_ALERTFLAGS;
server_status_session(loop->session);
}
}
}
/* Shuffle window indexes up. */
int
winlink_shuffle_up(struct session *s, struct winlink *wl, int before)
{
int idx, last;
if (wl == NULL)
return (-1);
if (before)
idx = wl->idx;
else
idx = wl->idx + 1;
/* Find the next free index. */
for (last = idx; last < INT_MAX; last++) {
if (winlink_find_by_index(&s->windows, last) == NULL)
break;
}
if (last == INT_MAX)
return (-1);
/* Move everything from last - 1 to idx up a bit. */
for (; last > idx; last--) {
wl = winlink_find_by_index(&s->windows, last - 1);
RB_REMOVE(winlinks, &s->windows, wl);
wl->idx++;
RB_INSERT(winlinks, &s->windows, wl);
}
return (idx);
}
static void
window_pane_input_callback(struct client *c, __unused const char *path,
int error, int closed, struct evbuffer *buffer, void *data)
{
struct window_pane_input_data *cdata = data;
struct window_pane *wp;
u_char *buf = EVBUFFER_DATA(buffer);
size_t len = EVBUFFER_LENGTH(buffer);
wp = window_pane_find_by_id(cdata->wp);
if (wp == NULL || closed || error != 0 || c->flags & CLIENT_DEAD) {
if (wp == NULL)
c->flags |= CLIENT_EXIT;
evbuffer_drain(buffer, len);
cmdq_continue(cdata->item);
server_client_unref(c);
free(cdata);
return;
}
input_parse_buffer(wp, buf, len);
evbuffer_drain(buffer, len);
}
int
window_pane_start_input(struct window_pane *wp, struct cmdq_item *item,
char **cause)
{
struct client *c = cmdq_get_client(item);
struct window_pane_input_data *cdata;
if (~wp->flags & PANE_EMPTY) {
*cause = xstrdup("pane is not empty");
return (-1);
}
cdata = xmalloc(sizeof *cdata);
cdata->item = item;
cdata->wp = wp->id;
c->references++;
file_read(c, "-", window_pane_input_callback, cdata);
return (0);
}
void *
window_pane_get_new_data(struct window_pane *wp,
struct window_pane_offset *wpo, size_t *size)
{
size_t used = wpo->used - wp->base_offset;
*size = EVBUFFER_LENGTH(wp->event->input) - used;
return (EVBUFFER_DATA(wp->event->input) + used);
}
void
window_pane_update_used_data(struct window_pane *wp,
struct window_pane_offset *wpo, size_t size)
{
size_t used = wpo->used - wp->base_offset;
if (size > EVBUFFER_LENGTH(wp->event->input) - used)
size = EVBUFFER_LENGTH(wp->event->input) - used;
wpo->used += size;
}