cmd-split-window.c revision 1.101 
1/* $OpenBSD: cmd-split-window.c,v 1.101 2020/04/13 14:04:25 nicm Exp $ */
2
3/*
4 * Copyright (c) 2009 Nicholas Marriott <nicholas.marriott@gmail.com>
5 *
6 * Permission to use, copy, modify, and distribute this software for any
7 * purpose with or without fee is hereby granted, provided that the above
8 * copyright notice and this permission notice appear in all copies.
9 *
10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14 * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
15 * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
16 * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 */
18
19#include <sys/types.h>
20
21#include <errno.h>
22#include <fcntl.h>
23#include <paths.h>
24#include <stdlib.h>
25#include <string.h>
26#include <unistd.h>
27
28#include "tmux.h"
29
30/*
31 * Split a window (add a new pane).
32 */
33
34#define SPLIT_WINDOW_TEMPLATE "#{session_name}:#{window_index}.#{pane_index}"
35
36static enum cmd_retval	cmd_split_window_exec(struct cmd *,
37			    struct cmdq_item *);
38
39const struct cmd_entry cmd_split_window_entry = {
40	.name = "split-window",
41	.alias = "splitw",
42
43	.args = { "bc:de:fF:hIl:p:Pt:v", 0, -1 },
44	.usage = "[-bdefhIPv] [-c start-directory] [-e environment] "
45		 "[-F format] [-l size] " CMD_TARGET_PANE_USAGE " [command]",
46
47	.target = { 't', CMD_FIND_PANE, 0 },
48
49	.flags = 0,
50	.exec = cmd_split_window_exec
51};
52
53static enum cmd_retval
54cmd_split_window_exec(struct cmd *self, struct cmdq_item *item)
55{
56	struct args		*args = cmd_get_args(self);
57	struct cmdq_state	*state = cmdq_get_state(item);
58	struct cmd_find_state	*current = &state->current;
59	struct cmd_find_state	*target = cmdq_get_target(item);
60	struct spawn_context	 sc;
61	struct client		*c = cmd_find_client(item, NULL, 1);
62	struct session		*s = target->s;
63	struct winlink		*wl = target->wl;
64	struct window_pane	*wp = target->wp, *new_wp;
65	enum layout_type	 type;
66	struct layout_cell	*lc;
67	struct cmd_find_state	 fs;
68	int			 size, percentage, flags, input;
69	const char		*template, *add, *errstr, *p;
70	char			*cause, *cp, *copy;
71	size_t			 plen;
72	struct args_value	*value;
73
74	if (args_has(args, 'h'))
75		type = LAYOUT_LEFTRIGHT;
76	else
77		type = LAYOUT_TOPBOTTOM;
78	if ((p = args_get(args, 'l')) != NULL) {
79		plen = strlen(p);
80		if (p[plen - 1] == '%') {
81			copy = xstrdup(p);
82			copy[plen - 1] = '\0';
83			percentage = strtonum(copy, 0, INT_MAX, &errstr);
84			free(copy);
85			if (errstr != NULL) {
86				cmdq_error(item, "percentage %s", errstr);
87				return (CMD_RETURN_ERROR);
88			}
89			if (type == LAYOUT_TOPBOTTOM)
90				size = (wp->sy * percentage) / 100;
91			else
92				size = (wp->sx * percentage) / 100;
93		} else {
94			size = args_strtonum(args, 'l', 0, INT_MAX, &cause);
95			if (cause != NULL) {
96				cmdq_error(item, "lines %s", cause);
97				free(cause);
98				return (CMD_RETURN_ERROR);
99			}
100		}
101	} else if (args_has(args, 'p')) {
102		percentage = args_strtonum(args, 'p', 0, INT_MAX, &cause);
103		if (cause != NULL) {
104			cmdq_error(item, "create pane failed: -p %s", cause);
105			free(cause);
106			return (CMD_RETURN_ERROR);
107		}
108		if (type == LAYOUT_TOPBOTTOM)
109			size = (wp->sy * percentage) / 100;
110		else
111			size = (wp->sx * percentage) / 100;
112	} else
113		size = -1;
114
115	server_unzoom_window(wp->window);
116	input = (args_has(args, 'I') && args->argc == 0);
117
118	flags = 0;
119	if (args_has(args, 'b'))
120		flags |= SPAWN_BEFORE;
121	if (args_has(args, 'f'))
122		flags |= SPAWN_FULLSIZE;
123	if (input || (args->argc == 1 && *args->argv[0] == '\0'))
124		flags |= SPAWN_EMPTY;
125
126	lc = layout_split_pane(wp, type, size, flags);
127	if (lc == NULL) {
128		cmdq_error(item, "no space for new pane");
129		return (CMD_RETURN_ERROR);
130	}
131
132	memset(&sc, 0, sizeof sc);
133	sc.item = item;
134	sc.s = s;
135	sc.wl = wl;
136
137	sc.wp0 = wp;
138	sc.lc = lc;
139
140	sc.name = NULL;
141	sc.argc = args->argc;
142	sc.argv = args->argv;
143	sc.environ = environ_create();
144
145	add = args_first_value(args, 'e', &value);
146	while (add != NULL) {
147		environ_put(sc.environ, add, 0);
148		add = args_next_value(&value);
149	}
150
151	sc.idx = -1;
152	sc.cwd = args_get(args, 'c');
153
154	sc.flags = flags;
155	if (args_has(args, 'd'))
156		sc.flags |= SPAWN_DETACHED;
157
158	if ((new_wp = spawn_pane(&sc, &cause)) == NULL) {
159		cmdq_error(item, "create pane failed: %s", cause);
160		free(cause);
161		return (CMD_RETURN_ERROR);
162	}
163	if (input && window_pane_start_input(new_wp, item, &cause) != 0) {
164		layout_close_pane(new_wp);
165		window_remove_pane(wp->window, new_wp);
166		cmdq_error(item, "%s", cause);
167		free(cause);
168		return (CMD_RETURN_ERROR);
169	}
170	if (!args_has(args, 'd'))
171		cmd_find_from_winlink_pane(current, wl, new_wp, 0);
172	server_redraw_window(wp->window);
173	server_status_session(s);
174
175	if (args_has(args, 'P')) {
176		if ((template = args_get(args, 'F')) == NULL)
177			template = SPLIT_WINDOW_TEMPLATE;
178		cp = format_single(item, template, c, s, wl, new_wp);
179		cmdq_print(item, "%s", cp);
180		free(cp);
181	}
182
183	cmd_find_from_winlink_pane(&fs, wl, new_wp, 0);
184	cmdq_insert_hook(s, item, &fs, "after-split-window");
185
186	environ_free(sc.environ);
187	if (input)
188		return (CMD_RETURN_WAIT);
189	return (CMD_RETURN_NORMAL);
190}
191