path: root/cmd-find.c

/* $OpenBSD$ */

/*
 * Copyright (c) 2015 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 <fnmatch.h>
#include <limits.h>
#include <stdlib.h>
#include <string.h>
#include <paths.h>
#include <unistd.h>

#include "tmux.h"

static int	cmd_find_session_better(struct session *, struct session *,
		    int);
static struct session *cmd_find_best_session(struct session **, u_int, int);
static int	cmd_find_best_session_with_window(struct cmd_find_state *);
static int	cmd_find_best_winlink_with_window(struct cmd_find_state *);

static const char *cmd_find_map_table(const char *[][2], const char *);

static int	cmd_find_get_session(struct cmd_find_state *, const char *);
static int	cmd_find_get_window(struct cmd_find_state *, const char *, int);
static int	cmd_find_get_window_with_session(struct cmd_find_state *,
		    const char *);
static int	cmd_find_get_pane(struct cmd_find_state *, const char *, int);
static int	cmd_find_get_pane_with_session(struct cmd_find_state *,
		    const char *);
static int	cmd_find_get_pane_with_window(struct cmd_find_state *,
		    const char *);

static const char *cmd_find_session_table[][2] = {
	{ NULL, NULL }
};
static const char *cmd_find_window_table[][2] = {
	{ "{start}", "^" },
	{ "{last}", "!" },
	{ "{end}", "$" },
	{ "{next}", "+" },
	{ "{previous}", "-" },
	{ NULL, NULL }
};
static const char *cmd_find_pane_table[][2] = {
	{ "{last}", "!" },
	{ "{next}", "+" },
	{ "{previous}", "-" },
	{ "{top}", "top" },
	{ "{bottom}", "bottom" },
	{ "{left}", "left" },
	{ "{right}", "right" },
	{ "{top-left}", "top-left" },
	{ "{top-right}", "top-right" },
	{ "{bottom-left}", "bottom-left" },
	{ "{bottom-right}", "bottom-right" },
	{ "{up-of}", "{up-of}" },
	{ "{down-of}", "{down-of}" },
	{ "{left-of}", "{left-of}" },
	{ "{right-of}", "{right-of}" },
	{ NULL, NULL }
};

/* Get session from TMUX if present. */
static struct session *
cmd_find_try_TMUX(struct client *c)
{
	struct environ_entry	*envent;
	char			 tmp[256];
	long long		 pid;
	u_int			 session;

	envent = environ_find(c->environ, "TMUX");
	if (envent == NULL)
		return (NULL);

	if (sscanf(envent->value, "%255[^,],%lld,%d", tmp, &pid, &session) != 3)
		return (NULL);
	if (pid != getpid())
		return (NULL);
	log_debug("client %p TMUX %s (session @%u)", c, envent->value, session);
	return (session_find_by_id(session));
}

/* Find pane containing client if any. */
static struct window_pane *
cmd_find_inside_pane(struct client *c)
{
	struct window_pane	*wp;

	if (c == NULL)
		return (NULL);

	RB_FOREACH(wp, window_pane_tree, &all_window_panes) {
		if (strcmp(wp->tty, c->ttyname) == 0)
			break;
	}
	return (wp);
}

/* Is this client better? */
static int
cmd_find_client_better(struct client *c, struct client *than)
{
	if (than == NULL)
		return (1);
	return (timercmp(&c->activity_time, &than->activity_time, >));
}

/* Find best client for session. */
struct client *
cmd_find_best_client(struct session *s)
{
	struct client	*c_loop, *c;

	if (s->flags & SESSION_UNATTACHED)
		s = NULL;

	c = NULL;
	TAILQ_FOREACH(c_loop, &clients, entry) {
		if (c_loop->session == NULL)
			continue;
		if (s != NULL && c_loop->session != s)
			continue;
		if (cmd_find_client_better(c_loop, c))
			c = c_loop;
	}
	return (c);
}

/* Is this session better? */
static int
cmd_find_session_better(struct session *s, struct session *than