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tmate/status.c
Tiago Cunha bc236109fd Sync OpenBSD patchset 374: 
Rather than running status-left, status-right and window title #() with popen
immediately every redraw, queue them up and run them in the background,
starting each once every status-interval. The actual status line uses the
output from the last run.

This brings several advantages:

- tmux itself may be called from inside #() without causing the server to hang;
- likewise, sleep or similar doesn't cause the server to block;
- commands aren't run excessively often when redrawing;
- commands shared by status-left and status-right, or used multiple times, will
  only be run once.

run-shell and if-shell still use system()/popen() but will be changed over to
use this too later.
2009-10-11 23:55:26 +00:00

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/* $Id: status.c,v 1.123 2009-10-11 23:55:26 tcunha Exp $ */
/*
* 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_job(struct client *, char **);
void status_job_callback(struct job *);
size_t status_width(struct winlink *);
char *status_print(struct session *, struct winlink *, struct grid_cell *);
void status_prompt_add_history(struct client *);
char *status_prompt_complete(const char *);
/* 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;
char *left, *right, *text, *ptr;
size_t llen, llen2, rlen, rlen2, offset;
size_t ox, xx, yy, size, start, width;
struct grid_cell stdgc, sl_stdgc, sr_stdgc, gc;
int larrow, rarrow, utf8flag;
int sl_fg, sl_bg, sr_fg, sr_bg;
int sl_attr, sr_attr;
left = right = NULL;
/* No status line?*/
if (c->tty.sy == 0 || !options_get_number(&s->options, "status"))
return (1);
larrow = rarrow = 0;
/* Create the target screen. */
memcpy(&old_status, &c->status, sizeof old_status);
screen_init(&c->status, c->tty.sx, 1, 0);
if (gettimeofday(&c->status_timer, NULL) != 0)
fatal("gettimeofday failed");
memcpy(&stdgc, &grid_default_cell, sizeof gc);
colour_set_fg(&stdgc, options_get_number(&s->options, "status-fg"));
colour_set_bg(&stdgc, options_get_number(&s->options, "status-bg"));
stdgc.attr |= options_get_number(&s->options, "status-attr");
/*
* Set the status-left and status-right parts to the default status
* line options and only change them where they differ from the
* defaults.
*/
memcpy(&sl_stdgc, &stdgc, sizeof sl_stdgc);
memcpy(&sr_stdgc, &stdgc, sizeof sr_stdgc);
sl_fg = options_get_number(&s->options, "status-left-fg");
if (sl_fg != 8)
colour_set_fg(&sl_stdgc, sl_fg);
sl_bg = options_get_number(&s->options, "status-left-bg");
if (sl_bg != 8)
colour_set_bg(&sl_stdgc, sl_bg);
sl_attr = options_get_number(&s->options, "status-left-attr");
if (sl_attr != 0)
sl_stdgc.attr = sl_attr;
sr_fg = options_get_number(&s->options, "status-right-fg");
if (sr_fg != 8)
colour_set_fg(&sr_stdgc, sr_fg);
sr_bg = options_get_number(&s->options, "status-right-bg");
if (sr_bg != 8)
colour_set_bg(&sr_stdgc, sr_bg);
sr_attr = options_get_number(&s->options, "status-right-attr");
if (sr_attr != 0)
sr_stdgc.attr = sr_attr;
yy = c->tty.sy - 1;
if (yy == 0)
goto blank;
/* Caring about UTF-8 in status line? */
utf8flag = options_get_number(&s->options, "status-utf8");
/* Work out the left and right strings. */
left = status_replace(c, options_get_string(
&s->options, "status-left"), c->status_timer.tv_sec);
llen = options_get_number(&s->options, "status-left-length");
llen2 = screen_write_cstrlen(utf8flag, "%s", left);
if (llen2 < llen)
llen = llen2;
right = status_replace(c, options_get_string(
&s->options, "status-right"), c->status_timer.tv_sec);
rlen = options_get_number(&s->options, "status-right-length");
rlen2 = screen_write_cstrlen(utf8flag, "%s", right);
if (rlen2 < rlen)
rlen = rlen2;
/*
* Figure out how much space we have for the window list. If there isn't
* enough space, just wimp out.
*/
xx = 0;
if (llen != 0)
xx += llen + 1;
if (rlen != 0)
xx += rlen + 1;
if (c->tty.sx == 0 || c->tty.sx <= xx)
goto blank;
xx = c->tty.sx - xx;
/*
* Right. We have xx characters to fill. Find out how much is to go in
* them and the offset of the current window (it must be on screen).
*/
width = offset = 0;
RB_FOREACH(wl, winlinks, &s->windows) {
size = status_width(wl) + 1;
if (wl == s->curw)
offset = width;
width += size;
}
start = 0;
/* If there is enough space for the total width, all is gravy. */
if (width <= xx)
goto draw;
/* Find size of current window text. */
size = status_width(s->curw);
/*
* If the offset is already on screen, we're good to draw from the
* start and just leave off the end.
*/
if (offset + size < xx) {
if (xx > 0) {
rarrow = 1;
xx--;
}
width = xx;
goto draw;
}
/*
* Work out how many characters we need to omit from the start. There
* are xx characters to fill, and offset + size must be the last. So,
* the start character is offset + size - xx.
*/
if (xx > 0) {
larrow = 1;
xx--;
}
start = offset + size - xx;
if (xx > 0 && width > start + xx + 1) { /* + 1, eh? */
rarrow = 1;
start++;
xx--;
}
width = xx;
draw:
/* Bail here if anything is too small too. XXX. */
if (width == 0 || xx == 0)
goto blank;
/* Begin drawing and move to the starting position. */
screen_write_start(&ctx, NULL, &c->status);
if (llen != 0) {
screen_write_cursormove(&ctx, 0, yy);
screen_write_cnputs(&ctx, llen, &sl_stdgc, utf8flag, "%s", left);
screen_write_putc(&ctx, &stdgc, ' ');
if (larrow)
screen_write_putc(&ctx, &stdgc, ' ');
} else {
if (larrow)
screen_write_cursormove(&ctx, 1, yy);
else
screen_write_cursormove(&ctx, 0, yy);
}
ox = 0;
if (width < xx) {
switch (options_get_number(&s->options, "status-justify")) {
case 1: /* centered */
ox = 1 + (xx - width) / 2;
break;
case 2: /* right */
ox = 1 + (xx - width);
break;
}
xx -= ox;
while (ox-- > 0)
screen_write_putc(&ctx, &stdgc, ' ');
}
/* Draw each character in succession. */
offset = 0;
RB_FOREACH(wl, winlinks, &s->windows) {
memcpy(&gc, &stdgc, sizeof gc);
text = status_print(s, wl, &gc);
if (larrow == 1 && offset < start) {
if (session_alert_has(s, wl, WINDOW_ACTIVITY))
larrow = -1;
else if (session_alert_has(s, wl, WINDOW_BELL))
larrow = -1;
else if (session_alert_has(s, wl, WINDOW_CONTENT))
larrow = -1;
}
for (ptr = text; *ptr != '\0'; ptr++) {
if (offset >= start && offset < start + width)
screen_write_putc(&ctx, &gc, *ptr);
offset++;
}
if (rarrow == 1 && offset > start + width) {
if (session_alert_has(s, wl, WINDOW_ACTIVITY))
rarrow = -1;
else if (session_alert_has(s, wl, WINDOW_BELL))
rarrow = -1;
else if (session_alert_has(s, wl, WINDOW_CONTENT))
rarrow = -1;
}
if (offset < start + width) {
if (offset >= start) {
screen_write_putc(&ctx, &stdgc, ' ');
}
offset++;
}
xfree(text);
}
/* Fill the remaining space if any. */
while (offset++ < xx)
screen_write_putc(&ctx, &stdgc, ' ');
/* Draw the last item. */
if (rlen != 0) {
screen_write_cursormove(&ctx, c->tty.sx - rlen - 1, yy);
screen_write_putc(&ctx, &stdgc, ' ');
screen_write_cnputs(&ctx, rlen, &sr_stdgc, utf8flag, "%s", right);
}
/* Draw the arrows. */
if (larrow != 0) {
memcpy(&gc, &stdgc, sizeof gc);
if (larrow == -1)
gc.attr ^= GRID_ATTR_REVERSE;
if (llen != 0)
screen_write_cursormove(&ctx, llen + 1, yy);
else
screen_write_cursormove(&ctx, 0, yy);
screen_write_putc(&ctx, &gc, '<');
}
if (rarrow != 0) {
memcpy(&gc, &stdgc, sizeof gc);
if (rarrow == -1)
gc.attr ^= GRID_ATTR_REVERSE;
if (rlen != 0)
screen_write_cursormove(&ctx, c->tty.sx - rlen - 2, yy);
else
screen_write_cursormove(&ctx, c->tty.sx - 1, yy);
screen_write_putc(&ctx, &gc, '>');
}
goto out;
blank:
/* Just draw the whole line as blank. */
screen_write_start(&ctx, NULL, &c->status);
screen_write_cursormove(&ctx, 0, yy);
for (offset = 0; offset < c->tty.sx; offset++)
screen_write_putc(&ctx, &stdgc, ' ');
out:
screen_write_stop(&ctx);
if (left != NULL)
xfree(left);
if (right != NULL)
xfree(right);
if (grid_compare(c->status.grid, old_status.grid) == 0) {
screen_free(&old_status);
return (0);
}
screen_free(&old_status);
return (1);
}
char *
status_replace(struct client *c, const char *fmt, time_t t)
{
struct session *s = c->session;
struct winlink *wl = s->curw;
static char out[BUFSIZ];
char in[BUFSIZ], tmp[256], ch, *iptr, *optr, *ptr, *endptr;
char *savedptr; /* freed at end of each loop */
size_t len;
long n;
strftime(in, sizeof in, fmt, localtime(&t));
in[(sizeof in) - 1] = '\0';
iptr = in;
optr = out;
savedptr = NULL;
while (*iptr != '\0') {
if (optr >= out + (sizeof out) - 1)
break;
switch (ch = *iptr++) {
case '#':
errno = 0;
n = strtol(iptr, &endptr, 10);
if ((n == 0 && errno != EINVAL) ||
(n == LONG_MIN && errno != ERANGE) ||
(n == LONG_MAX && errno != ERANGE) ||
n != 0)
iptr = endptr;
if (n <= 0)
n = LONG_MAX;
ptr = NULL;
switch (*iptr++) {
case '(':
if (ptr == NULL) {
ptr = status_job(c, &iptr);
if (ptr == NULL)
break;
savedptr = ptr;
}
/* FALLTHROUGH */
case 'H':
if (ptr == NULL) {
if (gethostname(tmp, sizeof tmp) != 0)
fatal("gethostname failed");
ptr = tmp;
}
/* FALLTHROUGH */
case 'I':
if (ptr == NULL) {
xsnprintf(tmp, sizeof tmp, "%d", wl->idx);
ptr = tmp;
}
/* FALLTHROUGH */
case 'P':
if (ptr == NULL) {
xsnprintf(tmp, sizeof tmp, "%u",
window_pane_index(wl->window,
wl->window->active));
ptr = tmp;
}
/* FALLTHROUGH */
case 'S':
if (ptr == NULL)
ptr = s->name;
/* FALLTHROUGH */
case 'T':
if (ptr == NULL)
ptr = wl->window->active->base.title;
/* FALLTHROUGH */
case 'W':
if (ptr == NULL)
ptr = wl->window->name;
len = strlen(ptr);
if ((size_t) n < len)
len = n;
if (optr + len >= out + (sizeof out) - 1)
break;
while (len > 0 && *ptr != '\0') {
*optr++ = *ptr++;
len--;
}
break;
case '[':
/*
* Embedded style, handled at display time.
* Leave present and skip input until ].
*/
*optr++ = '#';
iptr--; /* include [ */
while (*iptr != ']' && *iptr != '\0') {
if (optr >= out + (sizeof out) - 1)
break;
*optr++ = *iptr++;
}
break;
case '#':
*optr++ = '#';
break;
}
if (savedptr != NULL) {
xfree(savedptr);
savedptr = NULL;
}
break;
default:
*optr++ = ch;
break;
}
}
*optr = '\0';
return (xstrdup(out));
}
char *
status_job(struct client *c, char **iptr)
{
struct job *job;
char *buf, *cmd;
int lastesc;
size_t len;
if (**iptr == '\0')
return (NULL);
if (**iptr == ')') { /* no command given */
(*iptr)++;
return (NULL);
}
buf = NULL;
cmd = xmalloc(strlen(*iptr) + 1);
len = 0;
lastesc = 0;
for (; **iptr != '\0'; (*iptr)++) {
if (!lastesc && **iptr == ')')
break; /* unescaped ) is the end */
if (!lastesc && **iptr == '\\') {
lastesc = 1;
continue; /* skip \ if not escaped */
}
lastesc = 0;
cmd[len++] = **iptr;
}
if (**iptr == '\0') /* no terminating ) */ {
xfree(cmd);
return (NULL);
}
(*iptr)++; /* skip final ) */
cmd[len] = '\0';
job = job_get(&c->status_jobs, cmd);
if (job == NULL) {
job = job_add(
&c->status_jobs, c, cmd, status_job_callback, xfree, NULL);
job_run(job);
}
if (job->data == NULL)
return (xstrdup(""));
return (xstrdup(job->data));
}
void
status_job_callback(struct job *job)
{
char *buf;
size_t len;
len = BUFFER_USED(job->out);
buf = xmalloc(len + 1);
if (len != 0)
buffer_read(job->out, buf, len);
buf[len] = '\0';
buf[strcspn(buf, "\n")] = '\0';
if (job->data != NULL)
xfree(job->data);
else
server_redraw_client(job->client);
job->data = xstrdup(buf);
xfree(buf);
}
size_t
status_width(struct winlink *wl)
{
return (xsnprintf(NULL, 0, "%d:%s ", wl->idx, wl->window->name));
}
char *
status_print(struct session *s, struct winlink *wl, struct grid_cell *gc)
{
struct options *oo = &wl->window->options;
char *text, flag;
u_char fg, bg, attr;
fg = options_get_number(oo, "window-status-fg");
if (fg != 8)
colour_set_fg(gc, fg);
bg = options_get_number(oo, "window-status-bg");
if (bg != 8)
colour_set_bg(gc, bg);
attr = options_get_number(oo, "window-status-attr");
if (attr != 0)
gc->attr = attr;
flag = ' ';
if (wl == TAILQ_FIRST(&s->lastw))
flag = '-';
if (wl == s->curw) {
fg = options_get_number(oo, "window-status-current-fg");
if (fg != 8)
colour_set_fg(gc, fg);
bg = options_get_number(oo, "window-status-current-bg");
if (bg != 8)
colour_set_bg(gc, bg);
attr = options_get_number(oo, "window-status-current-attr");
if (attr != 0)
gc->attr = attr;
flag = '*';
}
if (session_alert_has(s, wl, WINDOW_ACTIVITY)) {
flag = '#';
gc->attr ^= GRID_ATTR_REVERSE;
} else if (session_alert_has(s, wl, WINDOW_BELL)) {
flag = '!';
gc->attr ^= GRID_ATTR_REVERSE;
} else if (session_alert_has(s, wl, WINDOW_CONTENT)) {
flag = '+';
gc->attr ^= GRID_ATTR_REVERSE;
}
xasprintf(&text, "%d:%s%c", wl->idx, wl->window->name, flag);
return (text);
}
void printflike2
status_message_set(struct client *c, const char *fmt, ...)
{
struct timeval tv;
va_list ap;
int delay;
status_prompt_clear(c);
status_message_clear(c);
va_start(ap, fmt);
xvasprintf(&c->message_string, fmt, ap);
va_end(ap);
delay = options_get_number(&c->session->options, "display-time");
tv.tv_sec = delay / 1000;
tv.tv_usec = (delay % 1000) * 1000L;
if (gettimeofday(&c->message_timer, NULL) != 0)
fatal("gettimeofday failed");
timeradd(&c->message_timer, &tv, &c->message_timer);
c->tty.flags |= (TTY_NOCURSOR|TTY_FREEZE);
c->flags |= CLIENT_STATUS;
}
void
status_message_clear(struct client *c)
{
if (c->message_string == NULL)
return;
xfree(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);
}
/* 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 = strlen(c->message_string);
if (len > c->tty.sx)
len = c->tty.sx;
memcpy(&gc, &grid_default_cell, sizeof gc);
colour_set_fg(&gc, options_get_number(&s->options, "message-fg"));
colour_set_bg(&gc, options_get_number(&s->options, "message-bg"));
gc.attr |= options_get_number(&s->options, "message-attr");
screen_write_start(&ctx, NULL, &c->status);
screen_write_cursormove(&ctx, 0, 0);
screen_write_puts(&ctx, &gc, "%.*s", (int) len, 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);
}
void
status_prompt_set(struct client *c, const char *msg,
int (*callbackfn)(void *, const char *), void (*freefn)(void *),
void *data, int flags)
{
int keys;
status_message_clear(c);
status_prompt_clear(c);
c->prompt_string = xstrdup(msg);
c->prompt_buffer = xstrdup("");
c->prompt_index = 0;
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;
}
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);
xfree(c->prompt_string);
c->prompt_string = NULL;
xfree(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);
}
void
status_prompt_update(struct client *c, const char *msg)
{
xfree(c->prompt_string);
c->prompt_string = xstrdup(msg);
*c->prompt_buffer = '\0';
c->prompt_index = 0;
c->prompt_hindex = 0;
c->flags |= CLIENT_STATUS;
}
/* 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;
char ch;
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);
off = 0;
len = strlen(c->prompt_string);
if (len > c->tty.sx)
len = c->tty.sx;
memcpy(&gc, &grid_default_cell, sizeof gc);
colour_set_fg(&gc, options_get_number(&s->options, "message-fg"));
colour_set_bg(&gc, options_get_number(&s->options, "message-bg"));
gc.attr |= options_get_number(&s->options, "message-attr");
screen_write_start(&ctx, NULL, &c->status);
screen_write_cursormove(&ctx, 0, 0);
screen_write_puts(&ctx, &gc, "%.*s", (int) len, c->prompt_string);
left = c->tty.sx - len;
if (left != 0) {
if (c->prompt_index < left)
size = strlen(c->prompt_buffer);
else {
off = c->prompt_index - left + 1;
if (c->prompt_index == strlen(c->prompt_buffer))
left--;
size = left;
}
screen_write_puts(
&ctx, &gc, "%.*s", (int) left, c->prompt_buffer + off);
for (i = len + size; i < c->tty.sx; i++)
screen_write_putc(&ctx, &gc, ' ');
/* Draw a fake cursor. */
ch = ' ';
screen_write_cursormove(&ctx, len + c->prompt_index - off, 0);
if (c->prompt_index < strlen(c->prompt_buffer))
ch = c->prompt_buffer[c->prompt_index];
gc.attr ^= GRID_ATTR_REVERSE;
screen_write_putc(&ctx, &gc, ch);
}
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);
}
/* Handle keys in prompt. */
void
status_prompt_key(struct client *c, int key)
{
struct paste_buffer *pb;
char *s, *first, *last, word[64], swapc;
size_t size, n, off, idx;
size = strlen(c->prompt_buffer);
switch (mode_key_lookup(&c->prompt_mdata, key)) {
case MODEKEYEDIT_CURSORLEFT:
if (c->prompt_index > 0) {
c->prompt_index--;
c->flags |= CLIENT_STATUS;
}
break;
case MODEKEYEDIT_SWITCHMODEAPPEND:
case MODEKEYEDIT_CURSORRIGHT:
if (c->prompt_index < size) {
c->prompt_index++;
c->flags |= CLIENT_STATUS;
}
break;
case MODEKEYEDIT_STARTOFLINE:
if (c->prompt_index != 0) {
c->prompt_index = 0;
c->flags |= CLIENT_STATUS;
}
break;
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(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, 1, 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);
xfree(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:
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:
*c->prompt_buffer = '\0';
c->prompt_index = 0;
c->flags |= CLIENT_STATUS;
break;
case MODEKEYEDIT_DELETETOENDOFLINE:
if (c->prompt_index < size) {
c->prompt_buffer[c->prompt_index] = '\0';
c->flags |= CLIENT_STATUS;
}
break;
case MODEKEYEDIT_HISTORYUP:
if (ARRAY_LENGTH(&c->prompt_hdata) == 0)
break;
xfree(c->prompt_buffer);
c->prompt_buffer = xstrdup(ARRAY_ITEM(&c->prompt_hdata,
ARRAY_LENGTH(&c->prompt_hdata) - 1 - c->prompt_hindex));
if (c->prompt_hindex != ARRAY_LENGTH(&c->prompt_hdata) - 1)
c->prompt_hindex++;
c->prompt_index = strlen(c->prompt_buffer);
c->flags |= CLIENT_STATUS;
break;
case MODEKEYEDIT_HISTORYDOWN:
xfree(c->prompt_buffer);
if (c->prompt_hindex != 0) {
c->prompt_hindex--;
c->prompt_buffer = xstrdup(ARRAY_ITEM(
&c->prompt_hdata, ARRAY_LENGTH(
&c->prompt_hdata) - 1 - c->prompt_hindex));
} else
c->prompt_buffer = xstrdup("");
c->prompt_index = strlen(c->prompt_buffer);
c->flags |= CLIENT_STATUS;
break;
case MODEKEYEDIT_PASTE:
if ((pb = paste_get_top(&c->session->buffers)) == NULL)
break;
for (n = 0; n < pb->size; n++) {
if (pb->data[n] < 32 || pb->data[n] == 127)
break;
}
c->prompt_buffer = xrealloc(c->prompt_buffer, 1, size + n + 1);
if (c->prompt_index == size) {
memcpy(c->prompt_buffer + c->prompt_index, pb->data, 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, pb->data, 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);
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 < 32 || key > 126)
break;
c->prompt_buffer = xrealloc(c->prompt_buffer, 1, 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;
}
}
/* Add line to the history. */
void
status_prompt_add_history(struct client *c)
{
if (ARRAY_LENGTH(&c->prompt_hdata) > 0 &&
strcmp(ARRAY_LAST(&c->prompt_hdata), c->prompt_buffer) == 0)
return;
if (ARRAY_LENGTH(&c->prompt_hdata) == PROMPT_HISTORY) {
xfree(ARRAY_FIRST(&c->prompt_hdata));
ARRAY_REMOVE(&c->prompt_hdata, 0);
}
ARRAY_ADD(&c->prompt_hdata, xstrdup(c->prompt_buffer));
}
/* Complete word. */
char *
status_prompt_complete(const char *s)
{
const struct cmd_entry **cmdent;
const struct set_option_entry *optent;
ARRAY_DECL(, const char *) list;
char *prefix, *s2;
u_int i;
size_t j;
if (*s == '\0')
return (NULL);
/* First, build a list of all the possible matches. */
ARRAY_INIT(&list);
for (cmdent = cmd_table; *cmdent != NULL; cmdent++) {
if (strncmp((*cmdent)->name, s, strlen(s)) == 0)
ARRAY_ADD(&list, (*cmdent)->name);
}
for (optent = set_option_table; optent->name != NULL; optent++) {
if (strncmp(optent->name, s, strlen(s)) == 0)
ARRAY_ADD(&list, optent->name);
}
for (optent = set_window_option_table; optent->name != NULL; optent++) {
if (strncmp(optent->name, s, strlen(s)) == 0)
ARRAY_ADD(&list, optent->name);
}
/* If none, bail now. */
if (ARRAY_LENGTH(&list) == 0) {
ARRAY_FREE(&list);
return (NULL);
}
/* If an exact match, return it, with a trailing space. */
if (ARRAY_LENGTH(&list) == 1) {
xasprintf(&s2, "%s ", ARRAY_FIRST(&list));
ARRAY_FREE(&list);
return (s2);
}
/* Now loop through the list and find the longest common prefix. */
prefix = xstrdup(ARRAY_FIRST(&list));
for (i = 1; i < ARRAY_LENGTH(&list); i++) {
s = ARRAY_ITEM(&list, i);
j = strlen(s);
if (j > strlen(prefix))
j = strlen(prefix);
for (; j > 0; j--) {
if (prefix[j - 1] != s[j - 1])
prefix[j - 1] = '\0';
}
}
ARRAY_FREE(&list);
return (prefix);
}
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