[f835be]: status.c Maximize Restore History

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status.c    1357 lines (1164 with data), 33.8 kB

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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_find_job(struct client *, char **);
void status_job_free(void *);
void status_job_callback(struct job *);
char *status_print(
struct client *, struct winlink *, time_t, struct grid_cell *);
void status_replace1(struct client *, char **, char **, char *, size_t, int);
void status_message_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 *);
char *status_prompt_complete(const char *);
/* Status prompt history. */
ARRAY_DECL(, char *) status_prompt_history = ARRAY_INITIALIZER;
/* Status output tree. */
RB_GENERATE(status_out_tree, status_out, entry, status_out_cmp);
/* Output tree comparison function. */
int
status_out_cmp(struct status_out *so1, struct status_out *so2)
{
return (strcmp(so1->cmd, so2->cmd));
}
/* 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, int utf8flag, struct grid_cell *gc, size_t *size)
{
struct session *s = c->session;
char *left;
size_t leftlen;
style_apply_update(gc, &s->options, "status-left-style");
left = status_replace(c, NULL,
NULL, 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;
size_t rightlen;
style_apply_update(gc, &s->options, "status-right-style");
right = status_replace(c, NULL,
NULL, 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);
}
/* Set window at window list position. */
void
status_set_window_at(struct client *c, u_int x)
{
struct session *s = c->session;
struct winlink *wl;
x += c->wlmouse;
RB_FOREACH(wl, winlinks, &s->windows) {
if (x < wl->status_width && session_select(s, wl->idx) == 0)
server_redraw_session(s);
x -= wl->status_width + 1;
}
}
/* 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, 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)
fatal("gettimeofday failed");
t = c->status_timer.tv_sec;
/* 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;
/* 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) {
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(utf8flag, "%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(utf8flag, "%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, utf8flag, "%s", wl->status_text);
oo = &wl->window->options;
sep = options_get_string(oo, "window-status-separator");
screen_write_nputs(&ctx, -1, &stdgc, utf8flag, "%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, 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. */
if (llen != 0)
wloffset = llen + 1;
else
wloffset = 0;
if (wlwidth < wlavailable) {
switch (options_get_number(&s->options, "status-justify")) {
case 1: /* centered */
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 a single special sequence (prefixed by #). */
void
status_replace1(struct client *c, char **iptr, char **optr, char *out,
size_t outsize, int jobsflag)
{
char ch, tmp[256], *ptr, *endptr;
size_t ptrlen;
long limit;
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;
switch (*(*iptr)++) {
case '(':
if (!jobsflag) {
ch = ')';
goto skip_to;
}
if ((ptr = status_find_job(c, iptr)) == NULL)
return;
goto do_replace;
case '[':
/*
* Embedded style, handled at display time. Leave present and
* skip input until ].
*/
ch = ']';
goto skip_to;
case '{':
ptr = (char *) "#{";
goto do_replace;
case '#':
*(*optr)++ = '#';
break;
default:
xsnprintf(tmp, sizeof tmp, "#%c", *(*iptr - 1));
ptr = tmp;
goto do_replace;
}
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--;
}
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 session *s, struct winlink *wl,
struct window_pane *wp, const char *fmt, time_t t, int jobsflag)
{
static char out[BUFSIZ];
char in[BUFSIZ], ch, *iptr, *optr, *expanded;
size_t len;
struct format_tree *ft;
if (fmt == NULL)
return (xstrdup(""));
if (s == NULL && c != NULL)
s = c->session;
if (wl == NULL && s != NULL)
wl = s->curw;
if (wp == NULL && wl != NULL)
wp = wl->window->active;
len = strftime(in, sizeof in, fmt, localtime(&t));
in[len] = '\0';
iptr = in;
optr = out;
while (*iptr != '\0') {
if (optr >= out + (sizeof out) - 1)
break;
ch = *iptr++;
if (ch != '#' || *iptr == '\0') {
*optr++ = ch;
continue;
}
status_replace1(c, &iptr, &optr, out, sizeof out, jobsflag);
}
*optr = '\0';
ft = format_create();
if (c != NULL)
format_client(ft, c);
if (s != NULL)
format_session(ft, s);
if (s != NULL && wl != NULL)
format_winlink(ft, s, wl);
if (wp != NULL)
format_window_pane(ft, wp);
expanded = format_expand(ft, out);
format_free(ft);
return (expanded);
}
/* Figure out job name and get its result, starting it off if necessary. */
char *
status_find_job(struct client *c, char **iptr)
{
struct status_out *so, so_find;
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 ) */ {
free(cmd);
return (NULL);
}
(*iptr)++; /* skip final ) */
cmd[len] = '\0';
/* First try in the new tree. */
so_find.cmd = cmd;
so = RB_FIND(status_out_tree, &c->status_new, &so_find);
if (so != NULL && so->out != NULL) {
free(cmd);
return (so->out);
}
/* If not found at all, start the job and add to the tree. */
if (so == NULL) {
job_run(cmd, NULL, status_job_callback, status_job_free, c);
c->references++;
so = xmalloc(sizeof *so);
so->cmd = xstrdup(cmd);
so->out = NULL;
RB_INSERT(status_out_tree, &c->status_new, so);
}
/* Lookup in the old tree. */
so_find.cmd = cmd;
so = RB_FIND(status_out_tree, &c->status_old, &so_find);
free(cmd);
if (so != NULL)
return (so->out);
return (NULL);
}
/* Free job tree. */
void
status_free_jobs(struct status_out_tree *sotree)
{
struct status_out *so, *so_next;
so_next = RB_MIN(status_out_tree, sotree);
while (so_next != NULL) {
so = so_next;
so_next = RB_NEXT(status_out_tree, sotree, so);
RB_REMOVE(status_out_tree, sotree, so);
free(so->out);
free(so->cmd);
free(so);
}
}
/* Update jobs on status interval. */
void
status_update_jobs(struct client *c)
{
/* Free the old tree. */
status_free_jobs(&c->status_old);
/* Move the new to old. */
memcpy(&c->status_old, &c->status_new, sizeof c->status_old);
RB_INIT(&c->status_new);
}
/* Free status job. */
void
status_job_free(void *data)
{
struct client *c = data;
c->references--;
}
/* Job has finished: save its result. */
void
status_job_callback(struct job *job)
{
struct client *c = job->data;
struct status_out *so, so_find;
char *line, *buf;
size_t len;
if (c->flags & CLIENT_DEAD)
return;
so_find.cmd = job->cmd;
so = RB_FIND(status_out_tree, &c->status_new, &so_find);
if (so == NULL || so->out != NULL)
return;
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';
} else
buf = line;
so->out = buf;
server_status_client(c);
}
/* 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_CONTENT)
style_apply_update(gc, oo, "window-status-content-style");
else if (wl->flags & (WINLINK_ACTIVITY|WINLINK_SILENCE))
style_apply_update(gc, oo, "window-status-activity-style");
text = status_replace(c, NULL, wl, NULL, 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);
free(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;
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;
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;
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, 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, const char *input,
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 = status_replace(c, NULL, NULL, NULL, msg,
time(NULL), 0);
c->prompt_buffer = status_replace(c, NULL, NULL, NULL, input,
time(NULL), 0);
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;
}
/* 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)
{
free(c->prompt_string);
c->prompt_string = status_replace(c, NULL, NULL, NULL, msg,
time(NULL), 0);
free(c->prompt_buffer);
c->prompt_buffer = status_replace(c, NULL, NULL, NULL, input,
time(NULL), 0);
c->prompt_index = strlen(c->prompt_buffer);
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;
/* 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, 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 session *sess = c->session;
struct options *oo = &sess->options;
struct paste_buffer *pb;
char *s, *first, *last, word[64], swapc;
const char *histstr;
const char *wsep = NULL;
u_char ch;
size_t size, n, off, idx;
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(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);
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(&global_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->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 & 0xff00) != 0 || 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;
}
}
/* Get previous line from the history. */
const char *
status_prompt_up_history(u_int *idx)
{
u_int size;
/*
* History runs from 0 to size - 1.
*
* Index is from 0 to size. Zero is empty.
*/
size = ARRAY_LENGTH(&status_prompt_history);
if (size == 0 || *idx == size)
return (NULL);
(*idx)++;
return (ARRAY_ITEM(&status_prompt_history, size - *idx));
}
/* Get next line from the history. */
const char *
status_prompt_down_history(u_int *idx)
{
u_int size;
size = ARRAY_LENGTH(&status_prompt_history);
if (size == 0 || *idx == 0)
return ("");
(*idx)--;
if (*idx == 0)
return ("");
return (ARRAY_ITEM(&status_prompt_history, size - *idx));
}
/* Add line to the history. */
void
status_prompt_add_history(const char *line)
{
u_int size;
size = ARRAY_LENGTH(&status_prompt_history);
if (size > 0 && strcmp(ARRAY_LAST(&status_prompt_history), line) == 0)
return;
if (size == PROMPT_HISTORY) {
free(ARRAY_FIRST(&status_prompt_history));
ARRAY_REMOVE(&status_prompt_history, 0);
}
ARRAY_ADD(&status_prompt_history, xstrdup(line));
}
/* Complete word. */
char *
status_prompt_complete(const char *s)
{
const struct cmd_entry **cmdent;
const struct options_table_entry *oe;
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 (oe = server_options_table; oe->name != NULL; oe++) {
if (strncmp(oe->name, s, strlen(s)) == 0)
ARRAY_ADD(&list, oe->name);
}
for (oe = session_options_table; oe->name != NULL; oe++) {
if (strncmp(oe->name, s, strlen(s)) == 0)
ARRAY_ADD(&list, oe->name);
}
for (oe = window_options_table; oe->name != NULL; oe++) {
if (strncmp(oe->name, s, strlen(s)) == 0)
ARRAY_ADD(&list, oe->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);
}