tmux/status.c

1373 lines
34 KiB
C

/* $OpenBSD$ */
/*
* Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
*
* 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/time.h>
#include <errno.h>
#include <limits.h>
#include <stdarg.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <unistd.h>
#include "tmux.h"
char *status_redraw_get_left(struct client *, time_t, struct grid_cell *,
size_t *);
char *status_redraw_get_right(struct client *, time_t, struct grid_cell *,
size_t *);
char *status_print(struct client *, struct winlink *, time_t,
struct grid_cell *);
char *status_replace(struct client *, struct winlink *, const char *, time_t);
void status_message_callback(int, short, void *);
void status_timer_callback(int, short, void *);
const char *status_prompt_up_history(u_int *);
const char *status_prompt_down_history(u_int *);
void status_prompt_add_history(const char *);
const char **status_prompt_complete_list(u_int *, const char *);
char *status_prompt_complete_prefix(const char **, u_int);
char *status_prompt_complete(struct session *, const char *);
char *status_prompt_find_history_file(void);
/* Status prompt history. */
#define PROMPT_HISTORY 100
char **status_prompt_hlist;
u_int status_prompt_hsize;
/* Find the history file to load/save from/to. */
char *
status_prompt_find_history_file(void)
{
const char *home, *history_file;
char *path;
history_file = options_get_string(global_options, "history-file");
if (*history_file == '\0')
return (NULL);
if (*history_file == '/')
return (xstrdup(history_file));
if (history_file[0] != '~' || history_file[1] != '/')
return (NULL);
if ((home = find_home()) == NULL)
return (NULL);
xasprintf(&path, "%s%s", home, history_file + 1);
return (path);
}
/* Load status prompt history from file. */
void
status_prompt_load_history(void)
{
FILE *f;
char *history_file, *line, *tmp;
size_t length;
if ((history_file = status_prompt_find_history_file()) == NULL)
return;
log_debug("loading history from %s", history_file);
f = fopen(history_file, "r");
if (f == NULL) {
log_debug("%s: %s", history_file, strerror(errno));
free(history_file);
return;
}
free(history_file);
for (;;) {
if ((line = fgetln(f, &length)) == NULL)
break;
if (length > 0) {
if (line[length - 1] == '\n') {
line[length - 1] = '\0';
status_prompt_add_history(line);
} else {
tmp = xmalloc(length + 1);
memcpy(tmp, line, length);
tmp[length] = '\0';
status_prompt_add_history(tmp);
free(tmp);
}
}
}
fclose(f);
}
/* Save status prompt history to file. */
void
status_prompt_save_history(void)
{
FILE *f;
u_int i;
char *history_file;
if ((history_file = status_prompt_find_history_file()) == NULL)
return;
log_debug("saving history to %s", history_file);
f = fopen(history_file, "w");
if (f == NULL) {
log_debug("%s: %s", history_file, strerror(errno));
free(history_file);
return;
}
free(history_file);
for (i = 0; i < status_prompt_hsize; i++) {
fputs(status_prompt_hlist[i], f);
fputc('\n', f);
}
fclose(f);
}
/* Status timer callback. */
void
status_timer_callback(__unused int fd, __unused short events, void *arg)
{
struct client *c = arg;
struct session *s = c->session;
struct timeval tv;
evtimer_del(&c->status_timer);
if (s == NULL)
return;
if (c->message_string == NULL && c->prompt_string == NULL)
c->flags |= CLIENT_STATUS;
timerclear(&tv);
tv.tv_sec = options_get_number(s->options, "status-interval");
if (tv.tv_sec != 0)
evtimer_add(&c->status_timer, &tv);
log_debug("client %p, status interval %d", c, (int)tv.tv_sec);
}
/* Start status timer for client. */
void
status_timer_start(struct client *c)
{
struct session *s = c->session;
if (event_initialized(&c->status_timer))
evtimer_del(&c->status_timer);
else
evtimer_set(&c->status_timer, status_timer_callback, c);
if (s != NULL && options_get_number(s->options, "status"))
status_timer_callback(-1, 0, c);
}
/* Start status timer for all clients. */
void
status_timer_start_all(void)
{
struct client *c;
TAILQ_FOREACH(c, &clients, entry)
status_timer_start(c);
}
/* Get screen line of status line. -1 means off. */
int
status_at_line(struct client *c)
{
struct session *s = c->session;
if (!options_get_number(s->options, "status"))
return (-1);
if (options_get_number(s->options, "status-position") == 0)
return (0);
return (c->tty.sy - 1);
}
/* Retrieve options for left string. */
char *
status_redraw_get_left(struct client *c, time_t t, struct grid_cell *gc,
size_t *size)
{
struct session *s = c->session;
const char *template;
char *left;
size_t leftlen;
style_apply_update(gc, s->options, "status-left-style");
template = options_get_string(s->options, "status-left");
left = status_replace(c, NULL, template, t);
*size = options_get_number(s->options, "status-left-length");
leftlen = screen_write_cstrlen("%s", left);
if (leftlen < *size)
*size = leftlen;
return (left);
}
/* Retrieve options for right string. */
char *
status_redraw_get_right(struct client *c, time_t t, struct grid_cell *gc,
size_t *size)
{
struct session *s = c->session;
const char *template;
char *right;
size_t rightlen;
style_apply_update(gc, s->options, "status-right-style");
template = options_get_string(s->options, "status-right");
right = status_replace(c, NULL, template, t);
*size = options_get_number(s->options, "status-right-length");
rightlen = screen_write_cstrlen("%s", right);
if (rightlen < *size)
*size = rightlen;
return (right);
}
/* Get window at window list position. */
struct window *
status_get_window_at(struct client *c, u_int x)
{
struct session *s = c->session;
struct winlink *wl;
struct options *oo;
size_t len;
x += c->wlmouse;
RB_FOREACH(wl, winlinks, &s->windows) {
oo = wl->window->options;
len = strlen(options_get_string(oo, "window-status-separator"));
if (x < wl->status_width)
return (wl->window);
x -= wl->status_width + len;
}
return (NULL);
}
/* Draw status for client on the last lines of given context. */
int
status_redraw(struct client *c)
{
struct screen_write_ctx ctx;
struct session *s = c->session;
struct winlink *wl;
struct screen old_status, window_list;
struct grid_cell stdgc, lgc, rgc, gc;
struct options *oo;
time_t t;
char *left, *right, *sep;
u_int offset, needed;
u_int wlstart, wlwidth, wlavailable, wloffset, wlsize;
size_t llen, rlen, seplen;
int larrow, rarrow;
/* No status line? */
if (c->tty.sy == 0 || !options_get_number(s->options, "status"))
return (1);
left = right = NULL;
larrow = rarrow = 0;
/* Store current time. */
t = time(NULL);
/* Set up default colour. */
style_apply(&stdgc, s->options, "status-style");
/* Create the target screen. */
memcpy(&old_status, &c->status, sizeof old_status);
screen_init(&c->status, c->tty.sx, 1, 0);
screen_write_start(&ctx, NULL, &c->status);
for (offset = 0; offset < c->tty.sx; offset++)
screen_write_putc(&ctx, &stdgc, ' ');
screen_write_stop(&ctx);
/* If the height is one line, blank status line. */
if (c->tty.sy <= 1)
goto out;
/* Work out left and right strings. */
memcpy(&lgc, &stdgc, sizeof lgc);
left = status_redraw_get_left(c, t, &lgc, &llen);
memcpy(&rgc, &stdgc, sizeof rgc);
right = status_redraw_get_right(c, t, &rgc, &rlen);
/*
* Figure out how much space we have for the window list. If there
* isn't enough space, just show a blank status line.
*/
needed = 0;
if (llen != 0)
needed += llen;
if (rlen != 0)
needed += rlen;
if (c->tty.sx == 0 || c->tty.sx <= needed)
goto out;
wlavailable = c->tty.sx - needed;
/* Calculate the total size needed for the window list. */
wlstart = wloffset = wlwidth = 0;
RB_FOREACH(wl, winlinks, &s->windows) {
free(wl->status_text);
memcpy(&wl->status_cell, &stdgc, sizeof wl->status_cell);
wl->status_text = status_print(c, wl, t, &wl->status_cell);
wl->status_width = screen_write_cstrlen("%s", wl->status_text);
if (wl == s->curw)
wloffset = wlwidth;
oo = wl->window->options;
sep = options_get_string(oo, "window-status-separator");
seplen = screen_write_strlen("%s", sep);
wlwidth += wl->status_width + seplen;
}
/* Create a new screen for the window list. */
screen_init(&window_list, wlwidth, 1, 0);
/* And draw the window list into it. */
screen_write_start(&ctx, NULL, &window_list);
RB_FOREACH(wl, winlinks, &s->windows) {
screen_write_cnputs(&ctx, -1, &wl->status_cell, "%s",
wl->status_text);
oo = wl->window->options;
sep = options_get_string(oo, "window-status-separator");
screen_write_nputs(&ctx, -1, &stdgc, "%s", sep);
}
screen_write_stop(&ctx);
/* If there is enough space for the total width, skip to draw now. */
if (wlwidth <= wlavailable)
goto draw;
/* Find size of current window text. */
wlsize = s->curw->status_width;
/*
* If the current window is already on screen, good to draw from the
* start and just leave off the end.
*/
if (wloffset + wlsize < wlavailable) {
if (wlavailable > 0) {
rarrow = 1;
wlavailable--;
}
wlwidth = wlavailable;
} else {
/*
* Work out how many characters we need to omit from the
* start. There are wlavailable characters to fill, and
* wloffset + wlsize must be the last. So, the start character
* is wloffset + wlsize - wlavailable.
*/
if (wlavailable > 0) {
larrow = 1;
wlavailable--;
}
wlstart = wloffset + wlsize - wlavailable;
if (wlavailable > 0 && wlwidth > wlstart + wlavailable + 1) {
rarrow = 1;
wlstart++;
wlavailable--;
}
wlwidth = wlavailable;
}
/* Bail if anything is now too small too. */
if (wlwidth == 0 || wlavailable == 0) {
screen_free(&window_list);
goto out;
}
/*
* Now the start position is known, work out the state of the left and
* right arrows.
*/
offset = 0;
RB_FOREACH(wl, winlinks, &s->windows) {
if (wl->flags & WINLINK_ALERTFLAGS &&
larrow == 1 && offset < wlstart)
larrow = -1;
offset += wl->status_width;
if (wl->flags & WINLINK_ALERTFLAGS &&
rarrow == 1 && offset > wlstart + wlwidth)
rarrow = -1;
}
draw:
/* Begin drawing. */
screen_write_start(&ctx, NULL, &c->status);
/* Draw the left string and arrow. */
screen_write_cursormove(&ctx, 0, 0);
if (llen != 0)
screen_write_cnputs(&ctx, llen, &lgc, "%s", left);
if (larrow != 0) {
memcpy(&gc, &stdgc, sizeof gc);
if (larrow == -1)
gc.attr ^= GRID_ATTR_REVERSE;
screen_write_putc(&ctx, &gc, '<');
}
/* Draw the right string and arrow. */
if (rarrow != 0) {
screen_write_cursormove(&ctx, c->tty.sx - rlen - 1, 0);
memcpy(&gc, &stdgc, sizeof gc);
if (rarrow == -1)
gc.attr ^= GRID_ATTR_REVERSE;
screen_write_putc(&ctx, &gc, '>');
} else
screen_write_cursormove(&ctx, c->tty.sx - rlen, 0);
if (rlen != 0)
screen_write_cnputs(&ctx, rlen, &rgc, "%s", right);
/* Figure out the offset for the window list. */
if (llen != 0)
wloffset = llen;
else
wloffset = 0;
if (wlwidth < wlavailable) {
switch (options_get_number(s->options, "status-justify")) {
case 1: /* centred */
wloffset += (wlavailable - wlwidth) / 2;
break;
case 2: /* right */
wloffset += (wlavailable - wlwidth);
break;
}
}
if (larrow != 0)
wloffset++;
/* Copy the window list. */
c->wlmouse = -wloffset + wlstart;
screen_write_cursormove(&ctx, wloffset, 0);
screen_write_copy(&ctx, &window_list, wlstart, 0, wlwidth, 1);
screen_free(&window_list);
screen_write_stop(&ctx);
out:
free(left);
free(right);
if (grid_compare(c->status.grid, old_status.grid) == 0) {
screen_free(&old_status);
return (0);
}
screen_free(&old_status);
return (1);
}
/* Replace special sequences in fmt. */
char *
status_replace(struct client *c, struct winlink *wl, const char *fmt, time_t t)
{
struct format_tree *ft;
char *expanded;
if (fmt == NULL)
return (xstrdup(""));
if (c->flags & CLIENT_STATUSFORCE)
ft = format_create_flags(FORMAT_STATUS|FORMAT_FORCE);
else
ft = format_create_flags(FORMAT_STATUS);
format_defaults(ft, c, NULL, wl, NULL);
expanded = format_expand_time(ft, fmt, t);
format_free(ft);
return (expanded);
}
/* Return winlink status line entry and adjust gc as necessary. */
char *
status_print(struct client *c, struct winlink *wl, time_t t,
struct grid_cell *gc)
{
struct options *oo = wl->window->options;
struct session *s = c->session;
const char *fmt;
char *text;
style_apply_update(gc, oo, "window-status-style");
fmt = options_get_string(oo, "window-status-format");
if (wl == s->curw) {
style_apply_update(gc, oo, "window-status-current-style");
fmt = options_get_string(oo, "window-status-current-format");
}
if (wl == TAILQ_FIRST(&s->lastw))
style_apply_update(gc, oo, "window-status-last-style");
if (wl->flags & WINLINK_BELL)
style_apply_update(gc, oo, "window-status-bell-style");
else if (wl->flags & (WINLINK_ACTIVITY|WINLINK_SILENCE))
style_apply_update(gc, oo, "window-status-activity-style");
text = status_replace(c, wl, fmt, t);
return (text);
}
/* Set a status line message. */
void
status_message_set(struct client *c, const char *fmt, ...)
{
struct timeval tv;
struct message_entry *msg, *msg1;
va_list ap;
int delay;
u_int first, limit;
limit = options_get_number(global_options, "message-limit");
status_prompt_clear(c);
status_message_clear(c);
va_start(ap, fmt);
xvasprintf(&c->message_string, fmt, ap);
va_end(ap);
msg = xcalloc(1, sizeof *msg);
msg->msg_time = time(NULL);
msg->msg_num = c->message_next++;
msg->msg = xstrdup(c->message_string);
TAILQ_INSERT_TAIL(&c->message_log, msg, entry);
first = c->message_next - limit;
TAILQ_FOREACH_SAFE(msg, &c->message_log, entry, msg1) {
if (msg->msg_num >= first)
continue;
free(msg->msg);
TAILQ_REMOVE(&c->message_log, msg, entry);
free(msg);
}
delay = options_get_number(c->session->options, "display-time");
tv.tv_sec = delay / 1000;
tv.tv_usec = (delay % 1000) * 1000L;
if (event_initialized(&c->message_timer))
evtimer_del(&c->message_timer);
evtimer_set(&c->message_timer, status_message_callback, c);
evtimer_add(&c->message_timer, &tv);
c->tty.flags |= (TTY_NOCURSOR|TTY_FREEZE);
c->flags |= CLIENT_STATUS;
}
/* Clear status line message. */
void
status_message_clear(struct client *c)
{
if (c->message_string == NULL)
return;
free(c->message_string);
c->message_string = NULL;
c->tty.flags &= ~(TTY_NOCURSOR|TTY_FREEZE);
c->flags |= CLIENT_REDRAW; /* screen was frozen and may have changed */
screen_reinit(&c->status);
}
/* Clear status line message after timer expires. */
void
status_message_callback(__unused int fd, __unused short event, void *data)
{
struct client *c = data;
status_message_clear(c);
}
/* Draw client message on status line of present else on last line. */
int
status_message_redraw(struct client *c)
{
struct screen_write_ctx ctx;
struct session *s = c->session;
struct screen old_status;
size_t len;
struct grid_cell gc;
if (c->tty.sx == 0 || c->tty.sy == 0)
return (0);
memcpy(&old_status, &c->status, sizeof old_status);
screen_init(&c->status, c->tty.sx, 1, 0);
len = screen_write_strlen("%s", c->message_string);
if (len > c->tty.sx)
len = c->tty.sx;
style_apply(&gc, s->options, "message-style");
screen_write_start(&ctx, NULL, &c->status);
screen_write_cursormove(&ctx, 0, 0);
screen_write_nputs(&ctx, len, &gc, "%s", c->message_string);
for (; len < c->tty.sx; len++)
screen_write_putc(&ctx, &gc, ' ');
screen_write_stop(&ctx);
if (grid_compare(c->status.grid, old_status.grid) == 0) {
screen_free(&old_status);
return (0);
}
screen_free(&old_status);
return (1);
}
/* Enable status line prompt. */
void
status_prompt_set(struct client *c, const char *msg, const char *input,
int (*callbackfn)(void *, const char *), void (*freefn)(void *),
void *data, int flags)
{
struct format_tree *ft;
int keys;
time_t t;
ft = format_create();
format_defaults(ft, c, NULL, NULL, NULL);
t = time(NULL);
status_message_clear(c);
status_prompt_clear(c);
c->prompt_string = format_expand_time(ft, msg, t);
c->prompt_buffer = format_expand_time(ft, input, t);
c->prompt_index = strlen(c->prompt_buffer);
c->prompt_callbackfn = callbackfn;
c->prompt_freefn = freefn;
c->prompt_data = data;
c->prompt_hindex = 0;
c->prompt_flags = flags;
keys = options_get_number(c->session->options, "status-keys");
if (keys == MODEKEY_EMACS)
mode_key_init(&c->prompt_mdata, &mode_key_tree_emacs_edit);
else
mode_key_init(&c->prompt_mdata, &mode_key_tree_vi_edit);
c->tty.flags |= (TTY_NOCURSOR|TTY_FREEZE);
c->flags |= CLIENT_STATUS;
format_free(ft);
}
/* Remove status line prompt. */
void
status_prompt_clear(struct client *c)
{
if (c->prompt_string == NULL)
return;
if (c->prompt_freefn != NULL && c->prompt_data != NULL)
c->prompt_freefn(c->prompt_data);
free(c->prompt_string);
c->prompt_string = NULL;
free(c->prompt_buffer);
c->prompt_buffer = NULL;
c->tty.flags &= ~(TTY_NOCURSOR|TTY_FREEZE);
c->flags |= CLIENT_REDRAW; /* screen was frozen and may have changed */
screen_reinit(&c->status);
}
/* Update status line prompt with a new prompt string. */
void
status_prompt_update(struct client *c, const char *msg, const char *input)
{
struct format_tree *ft;
time_t t;
ft = format_create();
format_defaults(ft, c, NULL, NULL, NULL);
t = time(NULL);
free(c->prompt_string);
c->prompt_string = format_expand_time(ft, msg, t);
free(c->prompt_buffer);
c->prompt_buffer = format_expand_time(ft, input, t);
c->prompt_index = strlen(c->prompt_buffer);
c->prompt_hindex = 0;
c->flags |= CLIENT_STATUS;
format_free(ft);
}
/* Draw client prompt on status line of present else on last line. */
int
status_prompt_redraw(struct client *c)
{
struct screen_write_ctx ctx;
struct session *s = c->session;
struct screen old_status;
size_t i, size, left, len, off;
struct grid_cell gc;
if (c->tty.sx == 0 || c->tty.sy == 0)
return (0);
memcpy(&old_status, &c->status, sizeof old_status);
screen_init(&c->status, c->tty.sx, 1, 0);
len = screen_write_strlen("%s", c->prompt_string);
if (len > c->tty.sx)
len = c->tty.sx;
off = 0;
/* Change colours for command mode. */
if (c->prompt_mdata.mode == 1)
style_apply(&gc, s->options, "message-command-style");
else
style_apply(&gc, s->options, "message-style");
screen_write_start(&ctx, NULL, &c->status);
screen_write_cursormove(&ctx, 0, 0);
screen_write_nputs(&ctx, len, &gc, "%s", c->prompt_string);
left = c->tty.sx - len;
if (left != 0) {
size = screen_write_strlen("%s", c->prompt_buffer);
if (c->prompt_index >= left) {
off = c->prompt_index - left + 1;
if (c->prompt_index == size)
left--;
size = left;
}
screen_write_nputs(&ctx, left, &gc, "%s", c->prompt_buffer +
off);
for (i = len + size; i < c->tty.sx; i++)
screen_write_putc(&ctx, &gc, ' ');
}
screen_write_stop(&ctx);
/* Apply fake cursor. */
off = len + c->prompt_index - off;
grid_view_get_cell(c->status.grid, off, 0, &gc);
gc.attr ^= GRID_ATTR_REVERSE;
grid_view_set_cell(c->status.grid, off, 0, &gc);
if (grid_compare(c->status.grid, old_status.grid) == 0) {
screen_free(&old_status);
return (0);
}
screen_free(&old_status);
return (1);
}
/* Handle keys in prompt. */
void
status_prompt_key(struct client *c, key_code key)
{
struct session *sess = c->session;
struct options *oo = sess->options;
struct paste_buffer *pb;
char *s, *first, *last, word[64], swapc;
const char *histstr, *bufdata, *wsep = NULL;
u_char ch;
size_t size, n, off, idx, bufsize;
size = strlen(c->prompt_buffer);
switch (mode_key_lookup(&c->prompt_mdata, key, NULL)) {
case MODEKEYEDIT_CURSORLEFT:
if (c->prompt_index > 0) {
c->prompt_index--;
c->flags |= CLIENT_STATUS;
}
break;
case MODEKEYEDIT_SWITCHMODE:
c->flags |= CLIENT_STATUS;
break;
case MODEKEYEDIT_SWITCHMODEAPPEND:
c->flags |= CLIENT_STATUS;
/* FALLTHROUGH */
case MODEKEYEDIT_CURSORRIGHT:
if (c->prompt_index < size) {
c->prompt_index++;
c->flags |= CLIENT_STATUS;
}
break;
case MODEKEYEDIT_SWITCHMODEBEGINLINE:
c->flags |= CLIENT_STATUS;
/* FALLTHROUGH */
case MODEKEYEDIT_STARTOFLINE:
if (c->prompt_index != 0) {
c->prompt_index = 0;
c->flags |= CLIENT_STATUS;
}
break;
case MODEKEYEDIT_SWITCHMODEAPPENDLINE:
c->flags |= CLIENT_STATUS;
/* FALLTHROUGH */
case MODEKEYEDIT_ENDOFLINE:
if (c->prompt_index != size) {
c->prompt_index = size;
c->flags |= CLIENT_STATUS;
}
break;
case MODEKEYEDIT_COMPLETE:
if (*c->prompt_buffer == '\0')
break;
idx = c->prompt_index;
if (idx != 0)
idx--;
/* Find the word we are in. */
first = c->prompt_buffer + idx;
while (first > c->prompt_buffer && *first != ' ')
first--;
while (*first == ' ')
first++;
last = c->prompt_buffer + idx;
while (*last != '\0' && *last != ' ')
last++;
while (*last == ' ')
last--;
if (*last != '\0')
last++;
if (last <= first ||
((size_t) (last - first)) > (sizeof word) - 1)
break;
memcpy(word, first, last - first);
word[last - first] = '\0';
/* And try to complete it. */
if ((s = status_prompt_complete(sess, word)) == NULL)
break;
/* Trim out word. */
n = size - (last - c->prompt_buffer) + 1; /* with \0 */
memmove(first, last, n);
size -= last - first;
/* Insert the new word. */
size += strlen(s);
off = first - c->prompt_buffer;
c->prompt_buffer = xrealloc(c->prompt_buffer, size + 1);
first = c->prompt_buffer + off;
memmove(first + strlen(s), first, n);
memcpy(first, s, strlen(s));
c->prompt_index = (first - c->prompt_buffer) + strlen(s);
free(s);
c->flags |= CLIENT_STATUS;
break;
case MODEKEYEDIT_BACKSPACE:
if (c->prompt_index != 0) {
if (c->prompt_index == size)
c->prompt_buffer[--c->prompt_index] = '\0';
else {
memmove(c->prompt_buffer + c->prompt_index - 1,
c->prompt_buffer + c->prompt_index,
size + 1 - c->prompt_index);
c->prompt_index--;
}
c->flags |= CLIENT_STATUS;
}
break;
case MODEKEYEDIT_DELETE:
case MODEKEYEDIT_SWITCHMODESUBSTITUTE:
if (c->prompt_index != size) {
memmove(c->prompt_buffer + c->prompt_index,
c->prompt_buffer + c->prompt_index + 1,
size + 1 - c->prompt_index);
c->flags |= CLIENT_STATUS;
}
break;
case MODEKEYEDIT_DELETELINE:
case MODEKEYEDIT_SWITCHMODESUBSTITUTELINE:
*c->prompt_buffer = '\0';
c->prompt_index = 0;
c->flags |= CLIENT_STATUS;
break;
case MODEKEYEDIT_DELETETOENDOFLINE:
case MODEKEYEDIT_SWITCHMODECHANGELINE:
if (c->prompt_index < size) {
c->prompt_buffer[c->prompt_index] = '\0';
c->flags |= CLIENT_STATUS;
}
break;
case MODEKEYEDIT_DELETEWORD:
wsep = options_get_string(oo, "word-separators");
idx = c->prompt_index;
/* Find a non-separator. */
while (idx != 0) {
idx--;
if (!strchr(wsep, c->prompt_buffer[idx]))
break;
}
/* Find the separator at the beginning of the word. */
while (idx != 0) {
idx--;
if (strchr(wsep, c->prompt_buffer[idx])) {
/* Go back to the word. */
idx++;
break;
}
}
memmove(c->prompt_buffer + idx,
c->prompt_buffer + c->prompt_index,
size + 1 - c->prompt_index);
memset(c->prompt_buffer + size - (c->prompt_index - idx),
'\0', c->prompt_index - idx);
c->prompt_index = idx;
c->flags |= CLIENT_STATUS;
break;
case MODEKEYEDIT_NEXTSPACE:
wsep = " ";
/* FALLTHROUGH */
case MODEKEYEDIT_NEXTWORD:
if (wsep == NULL)
wsep = options_get_string(oo, "word-separators");
/* Find a separator. */
while (c->prompt_index != size) {
c->prompt_index++;
if (strchr(wsep, c->prompt_buffer[c->prompt_index]))
break;
}
/* Find the word right after the separation. */
while (c->prompt_index != size) {
c->prompt_index++;
if (!strchr(wsep, c->prompt_buffer[c->prompt_index]))
break;
}
c->flags |= CLIENT_STATUS;
break;
case MODEKEYEDIT_NEXTSPACEEND:
wsep = " ";
/* FALLTHROUGH */
case MODEKEYEDIT_NEXTWORDEND:
if (wsep == NULL)
wsep = options_get_string(oo, "word-separators");
/* Find a word. */
while (c->prompt_index != size) {
c->prompt_index++;
if (!strchr(wsep, c->prompt_buffer[c->prompt_index]))
break;
}
/* Find the separator at the end of the word. */
while (c->prompt_index != size) {
c->prompt_index++;
if (strchr(wsep, c->prompt_buffer[c->prompt_index]))
break;
}
/* Back up to the end-of-word like vi. */
if (options_get_number(oo, "status-keys") == MODEKEY_VI &&
c->prompt_index != 0)
c->prompt_index--;
c->flags |= CLIENT_STATUS;
break;
case MODEKEYEDIT_PREVIOUSSPACE:
wsep = " ";
/* FALLTHROUGH */
case MODEKEYEDIT_PREVIOUSWORD:
if (wsep == NULL)
wsep = options_get_string(oo, "word-separators");
/* Find a non-separator. */
while (c->prompt_index != 0) {
c->prompt_index--;
if (!strchr(wsep, c->prompt_buffer[c->prompt_index]))
break;
}
/* Find the separator at the beginning of the word. */
while (c->prompt_index != 0) {
c->prompt_index--;
if (strchr(wsep, c->prompt_buffer[c->prompt_index])) {
/* Go back to the word. */
c->prompt_index++;
break;
}
}
c->flags |= CLIENT_STATUS;
break;
case MODEKEYEDIT_HISTORYUP:
histstr = status_prompt_up_history(&c->prompt_hindex);
if (histstr == NULL)
break;
free(c->prompt_buffer);
c->prompt_buffer = xstrdup(histstr);
c->prompt_index = strlen(c->prompt_buffer);
c->flags |= CLIENT_STATUS;
break;
case MODEKEYEDIT_HISTORYDOWN:
histstr = status_prompt_down_history(&c->prompt_hindex);
if (histstr == NULL)
break;
free(c->prompt_buffer);
c->prompt_buffer = xstrdup(histstr);
c->prompt_index = strlen(c->prompt_buffer);
c->flags |= CLIENT_STATUS;
break;
case MODEKEYEDIT_PASTE:
if ((pb = paste_get_top(NULL)) == NULL)
break;
bufdata = paste_buffer_data(pb, &bufsize);
for (n = 0; n < bufsize; n++) {
ch = (u_char)bufdata[n];
if (ch < 32 || ch == 127)
break;
}
c->prompt_buffer = xrealloc(c->prompt_buffer, size + n + 1);
if (c->prompt_index == size) {
memcpy(c->prompt_buffer + c->prompt_index, bufdata, n);
c->prompt_index += n;
c->prompt_buffer[c->prompt_index] = '\0';
} else {
memmove(c->prompt_buffer + c->prompt_index + n,
c->prompt_buffer + c->prompt_index,
size + 1 - c->prompt_index);
memcpy(c->prompt_buffer + c->prompt_index, bufdata, n);
c->prompt_index += n;
}
c->flags |= CLIENT_STATUS;
break;
case MODEKEYEDIT_TRANSPOSECHARS:
idx = c->prompt_index;
if (idx < size)
idx++;
if (idx >= 2) {
swapc = c->prompt_buffer[idx - 2];
c->prompt_buffer[idx - 2] = c->prompt_buffer[idx - 1];
c->prompt_buffer[idx - 1] = swapc;
c->prompt_index = idx;
c->flags |= CLIENT_STATUS;
}
break;
case MODEKEYEDIT_ENTER:
if (*c->prompt_buffer != '\0')
status_prompt_add_history(c->prompt_buffer);
if (c->prompt_callbackfn(c->prompt_data, c->prompt_buffer) == 0)
status_prompt_clear(c);
break;
case MODEKEYEDIT_CANCEL:
if (c->prompt_callbackfn(c->prompt_data, NULL) == 0)
status_prompt_clear(c);
break;
case MODEKEY_OTHER:
if (key <= 0x1f || key >= 0x7f)
break;
c->prompt_buffer = xrealloc(c->prompt_buffer, size + 2);
if (c->prompt_index == size) {
c->prompt_buffer[c->prompt_index++] = key;
c->prompt_buffer[c->prompt_index] = '\0';
} else {
memmove(c->prompt_buffer + c->prompt_index + 1,
c->prompt_buffer + c->prompt_index,
size + 1 - c->prompt_index);
c->prompt_buffer[c->prompt_index++] = key;
}
if (c->prompt_flags & PROMPT_SINGLE) {
if (c->prompt_callbackfn(
c->prompt_data, c->prompt_buffer) == 0)
status_prompt_clear(c);
}
c->flags |= CLIENT_STATUS;
break;
default:
break;
}
}
/* Get previous line from the history. */
const char *
status_prompt_up_history(u_int *idx)
{
/*
* History runs from 0 to size - 1. Index is from 0 to size. Zero is
* empty.
*/
if (status_prompt_hsize == 0 || *idx == status_prompt_hsize)
return (NULL);
(*idx)++;
return (status_prompt_hlist[status_prompt_hsize - *idx]);
}
/* Get next line from the history. */
const char *
status_prompt_down_history(u_int *idx)
{
if (status_prompt_hsize == 0 || *idx == 0)
return ("");
(*idx)--;
if (*idx == 0)
return ("");
return (status_prompt_hlist[status_prompt_hsize - *idx]);
}
/* Add line to the history. */
void
status_prompt_add_history(const char *line)
{
size_t size;
if (status_prompt_hsize > 0 &&
strcmp(status_prompt_hlist[status_prompt_hsize - 1], line) == 0)
return;
if (status_prompt_hsize == PROMPT_HISTORY) {
free(status_prompt_hlist[0]);
size = (PROMPT_HISTORY - 1) * sizeof *status_prompt_hlist;
memmove(&status_prompt_hlist[0], &status_prompt_hlist[1], size);
status_prompt_hlist[status_prompt_hsize - 1] = xstrdup(line);
return;
}
status_prompt_hlist = xreallocarray(status_prompt_hlist,
status_prompt_hsize + 1, sizeof *status_prompt_hlist);
status_prompt_hlist[status_prompt_hsize++] = xstrdup(line);
}
/* Build completion list. */
const char **
status_prompt_complete_list(u_int *size, const char *s)
{
const char **list = NULL, **layout;
const struct cmd_entry **cmdent;
const struct options_table_entry *oe;
const char *layouts[] = {
"even-horizontal", "even-vertical", "main-horizontal",
"main-vertical", "tiled", NULL
};
*size = 0;
for (cmdent = cmd_table; *cmdent != NULL; cmdent++) {
if (strncmp((*cmdent)->name, s, strlen(s)) == 0) {
list = xreallocarray(list, (*size) + 1, sizeof *list);
list[(*size)++] = (*cmdent)->name;
}
}
for (oe = server_options_table; oe->name != NULL; oe++) {
if (strncmp(oe->name, s, strlen(s)) == 0) {
list = xreallocarray(list, (*size) + 1, sizeof *list);
list[(*size)++] = oe->name;
}
}
for (oe = session_options_table; oe->name != NULL; oe++) {
if (strncmp(oe->name, s, strlen(s)) == 0) {
list = xreallocarray(list, (*size) + 1, sizeof *list);
list[(*size)++] = oe->name;
}
}
for (oe = window_options_table; oe->name != NULL; oe++) {
if (strncmp(oe->name, s, strlen(s)) == 0) {
list = xreallocarray(list, (*size) + 1, sizeof *list);
list[(*size)++] = oe->name;
}
}
for (layout = layouts; *layout != NULL; layout++) {
if (strncmp(*layout, s, strlen(s)) == 0) {
list = xreallocarray(list, (*size) + 1, sizeof *list);
list[(*size)++] = *layout;
}
}
return (list);
}
/* Find longest prefix. */
char *
status_prompt_complete_prefix(const char **list, u_int size)
{
char *out;
u_int i;
size_t j;
out = xstrdup(list[0]);
for (i = 1; i < size; i++) {
j = strlen(list[i]);
if (j > strlen(out))
j = strlen(out);
for (; j > 0; j--) {
if (out[j - 1] != list[i][j - 1])
out[j - 1] = '\0';
}
}
return (out);
}
/* Complete word. */
char *
status_prompt_complete(struct session *sess, const char *s)
{
const char **list = NULL, *colon;
u_int size = 0, i;
struct session *s_loop;
struct winlink *wl;
struct window *w;
char *copy, *out, *tmp;
if (*s == '\0')
return (NULL);
out = NULL;
if (strncmp(s, "-t", 2) != 0 && strncmp(s, "-s", 2) != 0) {
list = status_prompt_complete_list(&size, s);
if (size == 0)
out = NULL;
else if (size == 1)
xasprintf(&out, "%s ", list[0]);
else
out = status_prompt_complete_prefix(list, size);
free(list);
return (out);
}
copy = xstrdup(s);
colon = ":";
if (copy[strlen(copy) - 1] == ':')
copy[strlen(copy) - 1] = '\0';
else
colon = "";
s = copy + 2;
RB_FOREACH(s_loop, sessions, &sessions) {
if (strncmp(s_loop->name, s, strlen(s)) == 0) {
list = xreallocarray(list, size + 2, sizeof *list);
list[size++] = s_loop->name;
}
}
if (size == 1) {
out = xstrdup(list[0]);
if (session_find(list[0]) != NULL)
colon = ":";
} else if (size != 0)
out = status_prompt_complete_prefix(list, size);
if (out != NULL) {
xasprintf(&tmp, "-%c%s%s", copy[1], out, colon);
out = tmp;
goto found;
}
colon = "";
if (*s == ':') {
RB_FOREACH(wl, winlinks, &sess->windows) {
xasprintf(&tmp, ":%s", wl->window->name);
if (strncmp(tmp, s, strlen(s)) == 0){
list = xreallocarray(list, size + 1,
sizeof *list);
list[size++] = tmp;
continue;
}
free(tmp);
xasprintf(&tmp, ":%d", wl->idx);
if (strncmp(tmp, s, strlen(s)) == 0) {
list = xreallocarray(list, size + 1,
sizeof *list);
list[size++] = tmp;
continue;
}
free(tmp);
}
} else {
RB_FOREACH(s_loop, sessions, &sessions) {
RB_FOREACH(wl, winlinks, &s_loop->windows) {
w = wl->window;
xasprintf(&tmp, "%s:%s", s_loop->name, w->name);
if (strncmp(tmp, s, strlen(s)) == 0) {
list = xreallocarray(list, size + 1,
sizeof *list);
list[size++] = tmp;
continue;
}
free(tmp);
xasprintf(&tmp, "%s:%d", s_loop->name, wl->idx);
if (strncmp(tmp, s, strlen(s)) == 0) {
list = xreallocarray(list, size + 1,
sizeof *list);
list[size++] = tmp;
continue;
}
free(tmp);
}
}
}
if (size == 1) {
out = xstrdup(list[0]);
colon = " ";
} else if (size != 0)
out = status_prompt_complete_prefix(list, size);
if (out != NULL) {
xasprintf(&tmp, "-%c%s%s", copy[1], out, colon);
out = tmp;
}
for (i = 0; i < size; i++)
free((void *)list[i]);
found:
free(copy);
free(list);
return (out);
}