tmux/cmd-display-message.c
Nicholas Marriott 20636d956d Add a command queue to standardize and simplify commands that call other
commands and allow a command to block execution of subsequent
commands. This allows run-shell and if-shell to be synchronous which has
been much requested.

Each client has a default command queue and commands are consumed one at
a time from it. A command may suspend execution from the queue by
returning CMD_RETURN_WAIT and then resume it by calling cmd_continue() -
for example run-shell does this from the callback that is fired after
the job is freed.

When the command queue becomes empty, command clients are automatically
exited (unless attaching). A callback is also fired - this is used for
nested commands in, for example, if-shell which can block execution of
the client's cmdq until a new cmdq becomes empty.

Also merge all the old error/info/print functions together and lose the
old curclient/cmdclient distinction - a cmdq is bound to one client (or
none if in the configuration file), this is a command client if
c->session is NULL otherwise an attached client.
2013-03-24 09:54:10 +00:00

100 lines
2.5 KiB
C

/* $OpenBSD$ */
/*
* Copyright (c) 2009 Tiago Cunha <me@tiagocunha.org>
*
* 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 <stdlib.h>
#include <time.h>
#include "tmux.h"
/*
* Displays a message in the status line.
*/
enum cmd_retval cmd_display_message_exec(struct cmd *, struct cmd_q *);
const struct cmd_entry cmd_display_message_entry = {
"display-message", "display",
"c:pt:F:", 0, 1,
"[-p] [-c target-client] [-F format] " CMD_TARGET_PANE_USAGE
" [message]",
0,
NULL,
NULL,
cmd_display_message_exec
};
enum cmd_retval
cmd_display_message_exec(struct cmd *self, struct cmd_q *cmdq)
{
struct args *args = self->args;
struct client *c;
struct session *s;
struct winlink *wl;
struct window_pane *wp;
const char *template;
char *msg;
struct format_tree *ft;
char out[BUFSIZ];
time_t t;
size_t len;
if (args_has(args, 't')) {
wl = cmd_find_pane(cmdq, args_get(args, 't'), &s, &wp);
if (wl == NULL)
return (CMD_RETURN_ERROR);
} else {
wl = cmd_find_pane(cmdq, NULL, &s, &wp);
if (wl == NULL)
return (CMD_RETURN_ERROR);
}
if (args_has(args, 'F') && args->argc != 0) {
cmdq_error(cmdq, "only one of -F or argument must be given");
return (CMD_RETURN_ERROR);
}
template = args_get(args, 'F');
if (args->argc != 0)
template = args->argv[0];
if (template == NULL)
template = DISPLAY_MESSAGE_TEMPLATE;
ft = format_create();
if ((c = cmd_find_client(cmdq, args_get(args, 'c'), 1)) != NULL)
format_client(ft, c);
format_session(ft, s);
format_winlink(ft, s, wl);
format_window_pane(ft, wp);
t = time(NULL);
len = strftime(out, sizeof out, template, localtime(&t));
out[len] = '\0';
msg = format_expand(ft, out);
if (args_has(self->args, 'p'))
cmdq_print(cmdq, "%s", msg);
else
status_message_set(c, "%s", msg);
free(msg);
format_free(ft);
return (CMD_RETURN_NORMAL);
}