tmux/status.c
2018-08-29 11:02:36 +01:00

1638 lines
39 KiB
C

/* $OpenBSD$ */
/*
* Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
* IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/types.h>
#include <sys/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"
static char *status_redraw_get_left(struct client *, time_t,
struct grid_cell *, size_t *);
static char *status_redraw_get_right(struct client *, time_t,
struct grid_cell *, size_t *);
static char *status_print(struct client *, struct winlink *, time_t,
struct grid_cell *);
static char *status_replace(struct client *, struct winlink *, const char *,
time_t);
static void status_message_callback(int, short, void *);
static void status_timer_callback(int, short, void *);
static char *status_prompt_find_history_file(void);
static const char *status_prompt_up_history(u_int *);
static const char *status_prompt_down_history(u_int *);
static void status_prompt_add_history(const char *);
static const char **status_prompt_complete_list(u_int *, const char *);
static char *status_prompt_complete_prefix(const char **, u_int);
static char *status_prompt_complete(struct session *, const char *);
/* Status prompt history. */
#define PROMPT_HISTORY 100
static char **status_prompt_hlist;
static u_int status_prompt_hsize;
/* Find the history file to load/save from/to. */
static 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. */
static 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_REDRAWSTATUS;
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);
}
/* Update status cache. */
void
status_update_saved(struct session *s)
{
if (!options_get_number(s->options, "status"))
s->statusat = -1;
else if (options_get_number(s->options, "status-position") == 0)
s->statusat = 0;
else
s->statusat = 1;
}
/* Get screen line of status line. -1 means off. */
int
status_at_line(struct client *c)
{
struct session *s = c->session;
if (c->flags & CLIENT_STATUSOFF)
return (-1);
if (s->statusat != 1)
return (s->statusat);
return (c->tty.sy - status_line_size(c));
}
/* Get size of status line for client's session. 0 means off. */
u_int
status_line_size(struct client *c)
{
struct session *s = c->session;
if (c->flags & CLIENT_STATUSOFF)
return (0);
if (s->statusat == -1)
return (0);
return (1);
}
/* Retrieve options for left string. */
static 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. */
static 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;
const char *sep;
size_t seplen;
x += c->status.window_list_offset;
RB_FOREACH(wl, winlinks, &s->windows) {
oo = wl->window->options;
sep = options_get_string(oo, "window-status-separator");
seplen = screen_write_cstrlen("%s", sep);
if (x < wl->status_width)
return (wl->window);
x -= wl->status_width + seplen;
}
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;
const char *sep;
u_int offset, needed, lines;
u_int wlstart, wlwidth, wlavailable, wloffset, wlsize;
size_t llen, rlen, seplen;
int larrow, rarrow;
/* Delete the saved status line, if any. */
if (c->status.old_status != NULL) {
screen_free(c->status.old_status);
free(c->status.old_status);
c->status.old_status = NULL;
}
/* No status line? */
lines = status_line_size(c);
if (c->tty.sy == 0 || lines == 0)
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.status, sizeof old_status);
screen_init(&c->status.status, c->tty.sx, lines, 0);
screen_write_start(&ctx, NULL, &c->status.status);
for (offset = 0; offset < lines * c->tty.sx; offset++)
screen_write_putc(&ctx, &stdgc, ' ');
screen_write_stop(&ctx);
/* If the height is too small, blank status line. */
if (c->tty.sy < lines)
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_cstrlen("%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_cnputs(&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.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->status.window_list_offset = -wloffset + wlstart;
screen_write_cursormove(&ctx, wloffset, 0);
screen_write_fast_copy(&ctx, &window_list, wlstart, 0, wlwidth, 1);
screen_free(&window_list);
/* Save left and right size. */
c->status.left_size = llen;
c->status.right_size = rlen;
screen_write_stop(&ctx);
out:
free(left);
free(right);
if (grid_compare(c->status.status.grid, old_status.grid) == 0) {
screen_free(&old_status);
return (0);
}
screen_free(&old_status);
return (1);
}
/* Replace special sequences in fmt. */
static char *
status_replace(struct client *c, struct winlink *wl, const char *fmt, time_t t)
{
struct format_tree *ft;
char *expanded;
u_int tag;
if (fmt == NULL)
return (xstrdup(""));
if (wl != NULL)
tag = FORMAT_WINDOW|wl->window->id;
else
tag = FORMAT_NONE;
if (c->flags & CLIENT_STATUSFORCE)
ft = format_create(c, NULL, tag, FORMAT_STATUS|FORMAT_FORCE);
else
ft = format_create(c, NULL, tag, 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. */
static 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;
va_list ap;
int delay;
status_message_clear(c);
if (c->status.old_status == NULL) {
c->status.old_status = xmalloc(sizeof *c->status.old_status);
memcpy(c->status.old_status, &c->status.status,
sizeof *c->status.old_status);
screen_init(&c->status.status, c->tty.sx, 1, 0);
}
va_start(ap, fmt);
xvasprintf(&c->message_string, fmt, ap);
va_end(ap);
server_client_add_message(c, "%s", c->message_string);
delay = options_get_number(c->session->options, "display-time");
if (delay > 0) {
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_REDRAWSTATUS;
}
/* 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;
if (c->prompt_string == NULL)
c->tty.flags &= ~(TTY_NOCURSOR|TTY_FREEZE);
c->flags |= CLIENT_ALLREDRAWFLAGS; /* was frozen and may have changed */
screen_reinit(&c->status.status);
}
/* Clear status line message after timer expires. */
static 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;
u_int lines, offset;
if (c->tty.sx == 0 || c->tty.sy == 0)
return (0);
memcpy(&old_status, &c->status.status, sizeof old_status);
lines = status_line_size(c);
if (lines <= 1) {
lines = 1;
screen_init(&c->status.status, c->tty.sx, 1, 0);
} else
screen_init(&c->status.status, c->tty.sx, lines, 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.status);
screen_write_cursormove(&ctx, 0, 0);
for (offset = 0; offset < lines * c->tty.sx; offset++)
screen_write_putc(&ctx, &gc, ' ');
screen_write_cursormove(&ctx, 0, lines - 1);
screen_write_nputs(&ctx, len, &gc, "%s", c->message_string);
screen_write_stop(&ctx);
if (grid_compare(c->status.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,
prompt_input_cb inputcb, prompt_free_cb freecb, void *data, int flags)
{
struct format_tree *ft;
time_t t;
char *tmp, *cp;
ft = format_create(c, NULL, FORMAT_NONE, 0);
format_defaults(ft, c, NULL, NULL, NULL);
t = time(NULL);
if (input == NULL)
input = "";
if (flags & PROMPT_NOFORMAT)
tmp = xstrdup(input);
else
tmp = format_expand_time(ft, input, t);
status_message_clear(c);
status_prompt_clear(c);
if (c->status.old_status == NULL) {
c->status.old_status = xmalloc(sizeof *c->status.old_status);
memcpy(c->status.old_status, &c->status.status,
sizeof *c->status.old_status);
screen_init(&c->status.status, c->tty.sx, 1, 0);
}
c->prompt_string = format_expand_time(ft, msg, t);
c->prompt_buffer = utf8_fromcstr(tmp);
c->prompt_index = utf8_strlen(c->prompt_buffer);
c->prompt_inputcb = inputcb;
c->prompt_freecb = freecb;
c->prompt_data = data;
c->prompt_hindex = 0;
c->prompt_flags = flags;
c->prompt_mode = PROMPT_ENTRY;
if (~flags & PROMPT_INCREMENTAL)
c->tty.flags |= (TTY_NOCURSOR|TTY_FREEZE);
c->flags |= CLIENT_REDRAWSTATUS;
if ((flags & PROMPT_INCREMENTAL) && *tmp != '\0') {
xasprintf(&cp, "=%s", tmp);
c->prompt_inputcb(c, c->prompt_data, cp, 0);
free(cp);
}
free(tmp);
format_free(ft);
}
/* Remove status line prompt. */
void
status_prompt_clear(struct client *c)
{
if (c->prompt_string == NULL)
return;
if (c->prompt_freecb != NULL && c->prompt_data != NULL)
c->prompt_freecb(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_ALLREDRAWFLAGS; /* was frozen and may have changed */
screen_reinit(&c->status.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;
char *tmp;
ft = format_create(c, NULL, FORMAT_NONE, 0);
format_defaults(ft, c, NULL, NULL, NULL);
t = time(NULL);
tmp = format_expand_time(ft, input, t);
free(c->prompt_string);
c->prompt_string = format_expand_time(ft, msg, t);
free(c->prompt_buffer);
c->prompt_buffer = utf8_fromcstr(tmp);
c->prompt_index = utf8_strlen(c->prompt_buffer);
c->prompt_hindex = 0;
c->flags |= CLIENT_REDRAWSTATUS;
free(tmp);
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;
u_int i, offset, left, start, pcursor, pwidth, width;
u_int lines;
struct grid_cell gc, cursorgc;
if (c->tty.sx == 0 || c->tty.sy == 0)
return (0);
memcpy(&old_status, &c->status.status, sizeof old_status);
lines = status_line_size(c);
if (lines <= 1) {
lines = 1;
screen_init(&c->status.status, c->tty.sx, 1, 0);
} else
screen_init(&c->status.status, c->tty.sx, lines, 0);
if (c->prompt_mode == PROMPT_COMMAND)
style_apply(&gc, s->options, "message-command-style");
else
style_apply(&gc, s->options, "message-style");
memcpy(&cursorgc, &gc, sizeof cursorgc);
cursorgc.attr ^= GRID_ATTR_REVERSE;
start = screen_write_strlen("%s", c->prompt_string);
if (start > c->tty.sx)
start = c->tty.sx;
screen_write_start(&ctx, NULL, &c->status.status);
screen_write_cursormove(&ctx, 0, 0);
for (offset = 0; offset < lines * c->tty.sx; offset++)
screen_write_putc(&ctx, &gc, ' ');
screen_write_cursormove(&ctx, 0, 0);
screen_write_nputs(&ctx, start, &gc, "%s", c->prompt_string);
screen_write_cursormove(&ctx, start, 0);
left = c->tty.sx - start;
if (left == 0)
goto finished;
pcursor = utf8_strwidth(c->prompt_buffer, c->prompt_index);
pwidth = utf8_strwidth(c->prompt_buffer, -1);
if (pcursor >= left) {
/*
* The cursor would be outside the screen so start drawing
* with it on the right.
*/
offset = (pcursor - left) + 1;
pwidth = left;
} else
offset = 0;
if (pwidth > left)
pwidth = left;
width = 0;
for (i = 0; c->prompt_buffer[i].size != 0; i++) {
if (width < offset) {
width += c->prompt_buffer[i].width;
continue;
}
if (width >= offset + pwidth)
break;
width += c->prompt_buffer[i].width;
if (width > offset + pwidth)
break;
if (i != c->prompt_index) {
utf8_copy(&gc.data, &c->prompt_buffer[i]);
screen_write_cell(&ctx, &gc);
} else {
utf8_copy(&cursorgc.data, &c->prompt_buffer[i]);
screen_write_cell(&ctx, &cursorgc);
}
}
if (c->status.status.cx < screen_size_x(&c->status.status) &&
c->prompt_index >= i)
screen_write_putc(&ctx, &cursorgc, ' ');
finished:
screen_write_stop(&ctx);
if (grid_compare(c->status.status.grid, old_status.grid) == 0) {
screen_free(&old_status);
return (0);
}
screen_free(&old_status);
return (1);
}
/* Is this a separator? */
static int
status_prompt_in_list(const char *ws, const struct utf8_data *ud)
{
if (ud->size != 1 || ud->width != 1)
return (0);
return (strchr(ws, *ud->data) != NULL);
}
/* Is this a space? */
static int
status_prompt_space(const struct utf8_data *ud)
{
if (ud->size != 1 || ud->width != 1)
return (0);
return (*ud->data == ' ');
}
/*
* Translate key from emacs to vi. Return 0 to drop key, 1 to process the key
* as an emacs key; return 2 to append to the buffer.
*/
static int
status_prompt_translate_key(struct client *c, key_code key, key_code *new_key)
{
if (c->prompt_mode == PROMPT_ENTRY) {
switch (key) {
case '\003': /* C-c */
case '\010': /* C-h */
case '\011': /* Tab */
case '\025': /* C-u */
case '\027': /* C-w */
case '\n':
case '\r':
case KEYC_BSPACE:
case KEYC_DC:
case KEYC_DOWN:
case KEYC_END:
case KEYC_HOME:
case KEYC_LEFT:
case KEYC_RIGHT:
case KEYC_UP:
*new_key = key;
return (1);
case '\033': /* Escape */
c->prompt_mode = PROMPT_COMMAND;
c->flags |= CLIENT_REDRAWSTATUS;
return (0);
}
*new_key = key;
return (2);
}
switch (key) {
case 'A':
case 'I':
case 'C':
case 's':
case 'a':
c->prompt_mode = PROMPT_ENTRY;
c->flags |= CLIENT_REDRAWSTATUS;
break; /* switch mode and... */
case 'S':
c->prompt_mode = PROMPT_ENTRY;
c->flags |= CLIENT_REDRAWSTATUS;
*new_key = '\025'; /* C-u */
return (1);
case 'i':
case '\033': /* Escape */
c->prompt_mode = PROMPT_ENTRY;
c->flags |= CLIENT_REDRAWSTATUS;
return (0);
}
switch (key) {
case 'A':
case '$':
*new_key = KEYC_END;
return (1);
case 'I':
case '0':
case '^':
*new_key = KEYC_HOME;
return (1);
case 'C':
case 'D':
*new_key = '\013'; /* C-k */
return (1);
case KEYC_BSPACE:
case 'X':
*new_key = KEYC_BSPACE;
return (1);
case 'b':
case 'B':
*new_key = 'b'|KEYC_ESCAPE;
return (1);
case 'd':
*new_key = '\025';
return (1);
case 'e':
case 'E':
case 'w':
case 'W':
*new_key = 'f'|KEYC_ESCAPE;
return (1);
case 'p':
*new_key = '\031'; /* C-y */
return (1);
case 's':
case KEYC_DC:
case 'x':
*new_key = KEYC_DC;
return (1);
case KEYC_DOWN:
case 'j':
*new_key = KEYC_DOWN;
return (1);
case KEYC_LEFT:
case 'h':
*new_key = KEYC_LEFT;
return (1);
case 'a':
case KEYC_RIGHT:
case 'l':
*new_key = KEYC_RIGHT;
return (1);
case KEYC_UP:
case 'k':
*new_key = KEYC_UP;
return (1);
case '\010' /* C-h */:
case '\003' /* C-c */:
case '\n':
case '\r':
return (1);
}
return (0);
}
/* Handle keys in prompt. */
int
status_prompt_key(struct client *c, key_code key)
{
struct options *oo = c->session->options;
struct paste_buffer *pb;
char *s, *cp, word[64], prefix = '=';
const char *histstr, *bufdata, *ws = NULL;
u_char ch;
size_t size, n, off, idx, bufsize, used;
struct utf8_data tmp, *first, *last, *ud;
int keys;
size = utf8_strlen(c->prompt_buffer);
if (c->prompt_flags & PROMPT_NUMERIC) {
if (key >= '0' && key <= '9')
goto append_key;
s = utf8_tocstr(c->prompt_buffer);
c->prompt_inputcb(c, c->prompt_data, s, 1);
status_prompt_clear(c);
free(s);
return (1);
}
key &= ~KEYC_XTERM;
keys = options_get_number(c->session->options, "status-keys");
if (keys == MODEKEY_VI) {
switch (status_prompt_translate_key(c, key, &key)) {
case 1:
goto process_key;
case 2:
goto append_key;
default:
return (0);
}
}
process_key:
switch (key) {
case KEYC_LEFT:
case '\002': /* C-b */
if (c->prompt_index > 0) {
c->prompt_index--;
break;
}
break;
case KEYC_RIGHT:
case '\006': /* C-f */
if (c->prompt_index < size) {
c->prompt_index++;
break;
}
break;
case KEYC_HOME:
case '\001': /* C-a */
if (c->prompt_index != 0) {
c->prompt_index = 0;
break;
}
break;
case KEYC_END:
case '\005': /* C-e */
if (c->prompt_index != size) {
c->prompt_index = size;
break;
}
break;
case '\011': /* Tab */
if (c->prompt_buffer[0].size == 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 && !status_prompt_space(first))
first--;
while (first->size != 0 && status_prompt_space(first))
first++;
last = &c->prompt_buffer[idx];
while (last->size != 0 && !status_prompt_space(last))
last++;
while (last > c->prompt_buffer && status_prompt_space(last))
last--;
if (last->size != 0)
last++;
if (last <= first)
break;
used = 0;
for (ud = first; ud < last; ud++) {
if (used + ud->size >= sizeof word)
break;
memcpy(word + used, ud->data, ud->size);
used += ud->size;
}
if (ud != last)
break;
word[used] = '\0';
/* And try to complete it. */
if ((s = status_prompt_complete(c->session, word)) == NULL)
break;
/* Trim out word. */
n = size - (last - c->prompt_buffer) + 1; /* with \0 */
memmove(first, last, n * sizeof *c->prompt_buffer);
size -= last - first;
/* Insert the new word. */
size += strlen(s);
off = first - c->prompt_buffer;
c->prompt_buffer = xreallocarray(c->prompt_buffer, size + 1,
sizeof *c->prompt_buffer);
first = c->prompt_buffer + off;
memmove(first + strlen(s), first, n * sizeof *c->prompt_buffer);
for (idx = 0; idx < strlen(s); idx++)
utf8_set(&first[idx], s[idx]);
c->prompt_index = (first - c->prompt_buffer) + strlen(s);
free(s);
goto changed;
case KEYC_BSPACE:
case '\010': /* C-h */
if (c->prompt_index != 0) {
if (c->prompt_index == size)
c->prompt_buffer[--c->prompt_index].size = 0;
else {
memmove(c->prompt_buffer + c->prompt_index - 1,
c->prompt_buffer + c->prompt_index,
(size + 1 - c->prompt_index) *
sizeof *c->prompt_buffer);
c->prompt_index--;
}
goto changed;
}
break;
case KEYC_DC:
case '\004': /* C-d */
if (c->prompt_index != size) {
memmove(c->prompt_buffer + c->prompt_index,
c->prompt_buffer + c->prompt_index + 1,
(size + 1 - c->prompt_index) *
sizeof *c->prompt_buffer);
goto changed;
}
break;
case '\025': /* C-u */
c->prompt_buffer[0].size = 0;
c->prompt_index = 0;
goto changed;
case '\013': /* C-k */
if (c->prompt_index < size) {
c->prompt_buffer[c->prompt_index].size = 0;
goto changed;
}
break;
case '\027': /* C-w */
ws = options_get_string(oo, "word-separators");
idx = c->prompt_index;
/* Find a non-separator. */
while (idx != 0) {
idx--;
if (!status_prompt_in_list(ws, &c->prompt_buffer[idx]))
break;
}
/* Find the separator at the beginning of the word. */
while (idx != 0) {
idx--;
if (status_prompt_in_list(ws, &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) *
sizeof *c->prompt_buffer);
memset(c->prompt_buffer + size - (c->prompt_index - idx),
'\0', (c->prompt_index - idx) * sizeof *c->prompt_buffer);
c->prompt_index = idx;
goto changed;
case 'f'|KEYC_ESCAPE:
case KEYC_RIGHT|KEYC_CTRL:
ws = options_get_string(oo, "word-separators");
/* Find a word. */
while (c->prompt_index != size) {
idx = ++c->prompt_index;
if (!status_prompt_in_list(ws, &c->prompt_buffer[idx]))
break;
}
/* Find the separator at the end of the word. */
while (c->prompt_index != size) {
idx = ++c->prompt_index;
if (status_prompt_in_list(ws, &c->prompt_buffer[idx]))
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--;
goto changed;
case 'b'|KEYC_ESCAPE:
case KEYC_LEFT|KEYC_CTRL:
ws = options_get_string(oo, "word-separators");
/* Find a non-separator. */
while (c->prompt_index != 0) {
idx = --c->prompt_index;
if (!status_prompt_in_list(ws, &c->prompt_buffer[idx]))
break;
}
/* Find the separator at the beginning of the word. */
while (c->prompt_index != 0) {
idx = --c->prompt_index;
if (status_prompt_in_list(ws, &c->prompt_buffer[idx])) {
/* Go back to the word. */
c->prompt_index++;
break;
}
}
goto changed;
case KEYC_UP:
case '\020': /* C-p */
histstr = status_prompt_up_history(&c->prompt_hindex);
if (histstr == NULL)
break;
free(c->prompt_buffer);
c->prompt_buffer = utf8_fromcstr(histstr);
c->prompt_index = utf8_strlen(c->prompt_buffer);
goto changed;
case KEYC_DOWN:
case '\016': /* C-n */
histstr = status_prompt_down_history(&c->prompt_hindex);
if (histstr == NULL)
break;
free(c->prompt_buffer);
c->prompt_buffer = utf8_fromcstr(histstr);
c->prompt_index = utf8_strlen(c->prompt_buffer);
goto changed;
case '\031': /* C-y */
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 = xreallocarray(c->prompt_buffer, size + n + 1,
sizeof *c->prompt_buffer);
if (c->prompt_index == size) {
for (idx = 0; idx < n; idx++) {
ud = &c->prompt_buffer[c->prompt_index + idx];
utf8_set(ud, bufdata[idx]);
}
c->prompt_index += n;
c->prompt_buffer[c->prompt_index].size = 0;
} else {
memmove(c->prompt_buffer + c->prompt_index + n,
c->prompt_buffer + c->prompt_index,
(size + 1 - c->prompt_index) *
sizeof *c->prompt_buffer);
for (idx = 0; idx < n; idx++) {
ud = &c->prompt_buffer[c->prompt_index + idx];
utf8_set(ud, bufdata[idx]);
}
c->prompt_index += n;
}
goto changed;
case '\024': /* C-t */
idx = c->prompt_index;
if (idx < size)
idx++;
if (idx >= 2) {
utf8_copy(&tmp, &c->prompt_buffer[idx - 2]);
utf8_copy(&c->prompt_buffer[idx - 2],
&c->prompt_buffer[idx - 1]);
utf8_copy(&c->prompt_buffer[idx - 1], &tmp);
c->prompt_index = idx;
goto changed;
}
break;
case '\r':
case '\n':
s = utf8_tocstr(c->prompt_buffer);
if (*s != '\0')
status_prompt_add_history(s);
if (c->prompt_inputcb(c, c->prompt_data, s, 1) == 0)
status_prompt_clear(c);
free(s);
break;
case '\033': /* Escape */
case '\003': /* C-c */
case '\007': /* C-g */
if (c->prompt_inputcb(c, c->prompt_data, NULL, 1) == 0)
status_prompt_clear(c);
break;
case '\022': /* C-r */
if (c->prompt_flags & PROMPT_INCREMENTAL) {
prefix = '-';
goto changed;
}
break;
case '\023': /* C-s */
if (c->prompt_flags & PROMPT_INCREMENTAL) {
prefix = '+';
goto changed;
}
break;
default:
goto append_key;
}
c->flags |= CLIENT_REDRAWSTATUS;
return (0);
append_key:
if (key <= 0x1f || key >= KEYC_BASE)
return (0);
if (utf8_split(key, &tmp) != UTF8_DONE)
return (0);
c->prompt_buffer = xreallocarray(c->prompt_buffer, size + 2,
sizeof *c->prompt_buffer);
if (c->prompt_index == size) {
utf8_copy(&c->prompt_buffer[c->prompt_index], &tmp);
c->prompt_index++;
c->prompt_buffer[c->prompt_index].size = 0;
} else {
memmove(c->prompt_buffer + c->prompt_index + 1,
c->prompt_buffer + c->prompt_index,
(size + 1 - c->prompt_index) *
sizeof *c->prompt_buffer);
utf8_copy(&c->prompt_buffer[c->prompt_index], &tmp);
c->prompt_index++;
}
if (c->prompt_flags & PROMPT_SINGLE) {
s = utf8_tocstr(c->prompt_buffer);
if (strlen(s) != 1)
status_prompt_clear(c);
else if (c->prompt_inputcb(c, c->prompt_data, s, 1) == 0)
status_prompt_clear(c);
free(s);
}
changed:
c->flags |= CLIENT_REDRAWSTATUS;
if (c->prompt_flags & PROMPT_INCREMENTAL) {
s = utf8_tocstr(c->prompt_buffer);
xasprintf(&cp, "%c%s", prefix, s);
c->prompt_inputcb(c, c->prompt_data, cp, 0);
free(cp);
free(s);
}
return (0);
}
/* Get previous line from the history. */
static 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. */
static 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. */
static 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. */
static 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 = 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. */
static 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. */
static char *
status_prompt_complete(struct session *session, 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);
free(out);
out = tmp;
goto found;
}
colon = "";
if (*s == ':') {
RB_FOREACH(wl, winlinks, &session->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);
}