tmux/status.c

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29 KiB
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/* $OpenBSD$ */
/*
* 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, int, struct grid_cell *, size_t *);
char *status_redraw_get_right(
struct client *, time_t, int, struct grid_cell *, size_t *);
char *status_job(struct client *, char **);
void status_job_callback(struct job *);
size_t status_width(struct client *, struct winlink *, time_t);
char *status_print(
struct client *, struct winlink *, time_t, struct grid_cell *);
void status_replace1(struct client *,
struct winlink *, char **, char **, char *, size_t, int);
void status_message_callback(int, short, void *);
void status_prompt_add_history(struct client *);
char *status_prompt_complete(const char *);
/* Retrieve options for left string. */
char *
status_redraw_get_left(struct client *c,
time_t t, int utf8flag, struct grid_cell *gc, size_t *size)
{
struct session *s = c->session;
char *left;
u_char fg, bg, attr;
size_t leftlen;
fg = options_get_number(&s->options, "status-left-fg");
if (fg != 8)
colour_set_fg(gc, fg);
bg = options_get_number(&s->options, "status-left-bg");
if (bg != 8)
colour_set_bg(gc, bg);
attr = options_get_number(&s->options, "status-left-attr");
if (attr != 0)
gc->attr = attr;
left = status_replace(
c, NULL, options_get_string(&s->options, "status-left"), t, 1);
*size = options_get_number(&s->options, "status-left-length");
leftlen = screen_write_cstrlen(utf8flag, "%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, int utf8flag, struct grid_cell *gc, size_t *size)
{
struct session *s = c->session;
char *right;
u_char fg, bg, attr;
size_t rightlen;
fg = options_get_number(&s->options, "status-right-fg");
if (fg != 8)
colour_set_fg(gc, fg);
bg = options_get_number(&s->options, "status-right-bg");
if (bg != 8)
colour_set_bg(gc, bg);
attr = options_get_number(&s->options, "status-right-attr");
if (attr != 0)
gc->attr = attr;
right = status_replace(
c, NULL, options_get_string(&s->options, "status-right"), t, 1);
*size = options_get_number(&s->options, "status-right-length");
rightlen = screen_write_cstrlen(utf8flag, "%s", right);
if (rightlen < *size)
*size = rightlen;
return (right);
}
/* 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;
time_t t;
char *left, *right;
u_int offset, needed;
u_int wlstart, wlwidth, wlavailable, wloffset, wlsize;
size_t llen, rlen;
int larrow, rarrow, utf8flag;
/* No status line? */
if (c->tty.sy == 0 || !options_get_number(&s->options, "status"))
return (1);
left = right = NULL;
larrow = rarrow = 0;
/* Update status timer. */
if (gettimeofday(&c->status_timer, NULL) != 0)
2009-09-20 14:58:12 +00:00
fatal("gettimeofday failed");
t = c->status_timer.tv_sec;
/* Set up default colour. */
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");
/* 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;
/* Get UTF-8 flag. */
utf8flag = options_get_number(&s->options, "status-utf8");
/* Work out left and right strings. */
memcpy(&lgc, &stdgc, sizeof lgc);
left = status_redraw_get_left(c, t, utf8flag, &lgc, &llen);
memcpy(&rgc, &stdgc, sizeof rgc);
right = status_redraw_get_right(c, t, utf8flag, &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 + 1;
if (rlen != 0)
needed += rlen + 1;
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) {
if (wl->status_text != NULL)
xfree(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(utf8flag, "%s", wl->status_text);
if (wl == s->curw)
wloffset = wlwidth;
wlwidth += wl->status_width + 1;
}
/* 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, utf8flag, "%s", wl->status_text);
screen_write_putc(&ctx, &stdgc, ' ');
}
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 (larrow == 1 && offset < wlstart) {
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;
}
offset += wl->status_width;
if (rarrow == 1 && offset > wlstart + wlwidth) {
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;
}
}
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, utf8flag, "%s", left);
screen_write_putc(&ctx, &stdgc, ' ');
}
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 - 2, 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 - 1, 0);
if (rlen != 0) {
screen_write_putc(&ctx, &stdgc, ' ');
screen_write_cnputs(&ctx, rlen, &rgc, utf8flag, "%s", right);
}
/* Figure out the offset for the window list. */
wloffset = 1;
if (wlwidth < wlavailable) {
switch (options_get_number(&s->options, "status-justify")) {
case 1: /* centered */
wloffset = 1 + (wlavailable - wlwidth) / 2;
break;
case 2: /* right */
wloffset = 1 + (wlavailable - wlwidth);
break;
}
}
wloffset += llen;
if (larrow != 0)
wloffset++;
/* Copy the window list. */
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:
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);
}
/* Replace a single special sequence (prefixed by #). */
void
status_replace1(struct client *c,struct winlink *wl,
char **iptr, char **optr, char *out, size_t outsize, int jobsflag)
{
struct session *s = c->session;
char ch, tmp[256], *ptr, *endptr, *freeptr;
size_t ptrlen;
long limit;
if (wl == NULL)
wl = s->curw;
errno = 0;
limit = strtol(*iptr, &endptr, 10);
if ((limit == 0 && errno != EINVAL) ||
(limit == LONG_MIN && errno != ERANGE) ||
(limit == LONG_MAX && errno != ERANGE) ||
limit != 0)
*iptr = endptr;
if (limit <= 0)
limit = LONG_MAX;
freeptr = NULL;
switch (*(*iptr)++) {
case '(':
if (!jobsflag) {
ch = ')';
goto skip_to;
}
if ((ptr = status_job(c, iptr)) == NULL)
return;
freeptr = ptr;
goto do_replace;
case 'H':
if (gethostname(tmp, sizeof tmp) != 0)
fatal("gethostname failed");
ptr = tmp;
goto do_replace;
case 'I':
xsnprintf(tmp, sizeof tmp, "%d", wl->idx);
ptr = tmp;
goto do_replace;
case 'P':
xsnprintf(tmp, sizeof tmp, "%u",
window_pane_index(wl->window, wl->window->active));
ptr = tmp;
goto do_replace;
case 'S':
ptr = s->name;
goto do_replace;
case 'T':
ptr = wl->window->active->base.title;
goto do_replace;
case 'W':
ptr = wl->window->name;
goto do_replace;
case 'F':
tmp[0] = ' ';
if (session_alert_has(s, wl, WINDOW_CONTENT))
tmp[0] = '+';
else if (session_alert_has(s, wl, WINDOW_BELL))
tmp[0] = '!';
else if (session_alert_has(s, wl, WINDOW_ACTIVITY))
tmp[0] = '#';
else if (wl == s->curw)
tmp[0] = '*';
else if (wl == TAILQ_FIRST(&s->lastw))
tmp[0] = '-';
tmp[1] = '\0';
ptr = tmp;
goto do_replace;
case '[':
/*
* Embedded style, handled at display time. Leave present and
* skip input until ].
*/
ch = ']';
goto skip_to;
case '#':
*(*optr)++ = '#';
break;
}
return;
do_replace:
ptrlen = strlen(ptr);
if ((size_t) limit < ptrlen)
ptrlen = limit;
if (*optr + ptrlen >= out + outsize - 1)
return;
while (ptrlen > 0 && *ptr != '\0') {
*(*optr)++ = *ptr++;
ptrlen--;
}
if (freeptr != NULL)
xfree(freeptr);
return;
skip_to:
*(*optr)++ = '#';
(*iptr)--; /* include ch */
while (**iptr != ch && **iptr != '\0') {
if (*optr >= out + outsize - 1)
break;
*(*optr)++ = *(*iptr)++;
}
}
/* Replace special sequences in fmt. */
char *
status_replace(struct client *c,
struct winlink *wl, const char *fmt, time_t t, int jobsflag)
{
static char out[BUFSIZ];
char in[BUFSIZ], ch, *iptr, *optr;
strftime(in, sizeof in, fmt, localtime(&t));
in[(sizeof in) - 1] = '\0';
iptr = in;
optr = out;
while (*iptr != '\0') {
if (optr >= out + (sizeof out) - 1)
break;
ch = *iptr++;
if (ch != '#') {
*optr++ = ch;
continue;
}
status_replace1(c, wl, &iptr, &optr, out, sizeof out, jobsflag);
}
*optr = '\0';
return (xstrdup(out));
}
/* Figure out job name and get its result, starting it off if necessary. */
char *
status_job(struct client *c, char **iptr)
{
struct job *job;
char *cmd;
int lastesc;
size_t len;
if (**iptr == '\0')
return (NULL);
if (**iptr == ')') { /* no command given */
(*iptr)++;
return (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,
JOB_PERSIST, c, cmd, status_job_callback, xfree, NULL);
job_run(job);
}
if (job->data == NULL)
return (xstrdup(""));
return (xstrdup(job->data));
}
/* Job has finished: save its result. */
void
status_job_callback(struct job *job)
{
2009-11-04 21:04:43 +00:00
char *line, *buf;
size_t len;
2009-11-04 21:04:43 +00:00
buf = NULL;
if ((line = evbuffer_readline(job->event->input)) == NULL) {
len = EVBUFFER_LENGTH(job->event->input);
buf = xmalloc(len + 1);
if (len != 0)
memcpy(buf, EVBUFFER_DATA(job->event->input), len);
buf[len] = '\0';
}
if (job->data != NULL)
xfree(job->data);
else
server_redraw_client(job->client);
2009-11-04 21:04:43 +00:00
job->data = xstrdup(line);
2009-11-04 21:04:43 +00:00
if (buf != NULL)
xfree(buf);
}
/* Calculate winlink status line entry width. */
size_t
status_width(struct client *c, struct winlink *wl, time_t t)
{
struct options *oo = &wl->window->options;
struct session *s = c->session;
const char *fmt;
char *text;
size_t size;
int utf8flag;
utf8flag = options_get_number(&s->options, "status-utf8");
fmt = options_get_string(&wl->window->options, "window-status-format");
if (wl == s->curw)
fmt = options_get_string(oo, "window-status-current-format");
text = status_replace(c, wl, fmt, t, 1);
size = screen_write_cstrlen(utf8flag, "%s", text);
xfree(text);
return (size);
}
/* 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;
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;
fmt = options_get_string(oo, "window-status-format");
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;
fmt = options_get_string(oo, "window-status-current-format");
}
if (session_alert_has(s, wl, WINDOW_ACTIVITY) ||
session_alert_has(s, wl, WINDOW_BELL) ||
session_alert_has(s, wl, WINDOW_CONTENT))
gc->attr ^= GRID_ATTR_REVERSE;
text = status_replace(c, wl, fmt, t, 1);
return (text);
}
/* Set a status line message. */
void printflike2
status_message_set(struct client *c, const char *fmt, ...)
{
struct timeval tv;
struct session *s = c->session;
struct message_entry *msg;
va_list ap;
int delay;
u_int i, limit;
status_prompt_clear(c);
status_message_clear(c);
va_start(ap, fmt);
xvasprintf(&c->message_string, fmt, ap);
va_end(ap);
ARRAY_EXPAND(&c->message_log, 1);
msg = &ARRAY_LAST(&c->message_log);
msg->msg_time = time(NULL);
msg->msg = xstrdup(c->message_string);
if (s == NULL)
limit = 0;
else
limit = options_get_number(&s->options, "message-limit");
if (ARRAY_LENGTH(&c->message_log) > limit) {
limit = ARRAY_LENGTH(&c->message_log) - limit;
for (i = 0; i < limit; i++) {
msg = &ARRAY_FIRST(&c->message_log);
xfree(msg->msg);
ARRAY_REMOVE(&c->message_log, 0);
}
}
delay = options_get_number(&c->session->options, "display-time");
tv.tv_sec = delay / 1000;
tv.tv_usec = (delay % 1000) * 1000L;
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;
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);
}
/* Clear status line message after timer expires. */
/* ARGSUSED */
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;
int utf8flag;
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);
utf8flag = options_get_number(&s->options, "status-utf8");
len = screen_write_strlen(utf8flag, "%s", 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_nputs(&ctx, len, &gc, utf8flag, "%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,
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;
}
/* 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);
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);
}
/* Update status line prompt with a new prompt string. */
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;
struct grid_cell gc, *gcp;
int utf8flag;
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);
utf8flag = options_get_number(&s->options, "status-utf8");
len = screen_write_strlen(utf8flag, "%s", c->prompt_string);
if (len > c->tty.sx)
len = c->tty.sx;
off = 0;
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_nputs(&ctx, len, &gc, utf8flag, "%s", c->prompt_string);
left = c->tty.sx - len;
if (left != 0) {
size = screen_write_strlen(utf8flag, "%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, utf8flag, "%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;
gcp = grid_view_get_cell(c->status.grid, off, 0);
gcp->attr ^= GRID_ATTR_REVERSE;
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;
u_char ch;
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);
2009-07-30 20:41:48 +00:00
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++) {
ch = (u_char) pb->data[n];
if (ch < 32 || ch == 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 == 127)
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);
}