cmd-split-window.c revision 1.70 
1/* $OpenBSD: cmd-split-window.c,v 1.70 2016/09/04 17:37:06 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
36enum cmd_retval	 cmd_split_window_exec(struct cmd *, struct cmd_q *);
37
38const struct cmd_entry cmd_split_window_entry = {
39	.name = "split-window",
40	.alias = "splitw",
41
42	.args = { "bc:dfF:l:hp:Pt:v", 0, -1 },
43	.usage = "[-bdfhvP] [-c start-directory] [-F format] "
44		 "[-p percentage|-l size] " CMD_TARGET_PANE_USAGE " [command]",
45
46	.tflag = CMD_PANE,
47
48	.flags = 0,
49	.exec = cmd_split_window_exec
50};
51
52enum cmd_retval
53cmd_split_window_exec(struct cmd *self, struct cmd_q *cmdq)
54{
55	struct args		*args = self->args;
56	struct session		*s = cmdq->state.tflag.s;
57	struct winlink		*wl = cmdq->state.tflag.wl;
58	struct window		*w = wl->window;
59	struct window_pane	*wp = cmdq->state.tflag.wp, *new_wp = NULL;
60	struct environ		*env;
61	const char		*cmd, *path, *shell, *template, *cwd, *to_free;
62	char		       **argv, *cause, *new_cause, *cp;
63	u_int			 hlimit;
64	int			 argc, size, percentage;
65	enum layout_type	 type;
66	struct layout_cell	*lc;
67	struct format_tree	*ft;
68	struct environ_entry	*envent;
69
70	server_unzoom_window(w);
71
72	env = environ_create();
73	environ_copy(global_environ, env);
74	environ_copy(s->environ, env);
75	server_fill_environ(s, env);
76
77	if (args->argc == 0) {
78		cmd = options_get_string(s->options, "default-command");
79		if (cmd != NULL && *cmd != '\0') {
80			argc = 1;
81			argv = (char **)&cmd;
82		} else {
83			argc = 0;
84			argv = NULL;
85		}
86	} else {
87		argc = args->argc;
88		argv = args->argv;
89	}
90
91	to_free = NULL;
92	if (args_has(args, 'c')) {
93		ft = format_create(cmdq, 0);
94		format_defaults(ft, cmdq->state.c, s, NULL, NULL);
95		to_free = cwd = format_expand(ft, args_get(args, 'c'));
96		format_free(ft);
97	} else if (cmdq->client != NULL && cmdq->client->session == NULL)
98		cwd = cmdq->client->cwd;
99	else
100		cwd = s->cwd;
101
102	type = LAYOUT_TOPBOTTOM;
103	if (args_has(args, 'h'))
104		type = LAYOUT_LEFTRIGHT;
105
106	size = -1;
107	if (args_has(args, 'l')) {
108		size = args_strtonum(args, 'l', 0, INT_MAX, &cause);
109		if (cause != NULL) {
110			xasprintf(&new_cause, "size %s", cause);
111			free(cause);
112			cause = new_cause;
113			goto error;
114		}
115	} else if (args_has(args, 'p')) {
116		percentage = args_strtonum(args, 'p', 0, INT_MAX, &cause);
117		if (cause != NULL) {
118			xasprintf(&new_cause, "percentage %s", cause);
119			free(cause);
120			cause = new_cause;
121			goto error;
122		}
123		if (type == LAYOUT_TOPBOTTOM)
124			size = (wp->sy * percentage) / 100;
125		else
126			size = (wp->sx * percentage) / 100;
127	}
128	hlimit = options_get_number(s->options, "history-limit");
129
130	shell = options_get_string(s->options, "default-shell");
131	if (*shell == '\0' || areshell(shell))
132		shell = _PATH_BSHELL;
133
134	lc = layout_split_pane(wp, type, size, args_has(args, 'b'),
135	    args_has(args, 'f'));
136	if (lc == NULL) {
137		cause = xstrdup("pane too small");
138		goto error;
139	}
140	new_wp = window_add_pane(w, wp, hlimit);
141	layout_assign_pane(lc, new_wp);
142
143	path = NULL;
144	if (cmdq->client != NULL && cmdq->client->session == NULL)
145		envent = environ_find(cmdq->client->environ, "PATH");
146	else
147		envent = environ_find(s->environ, "PATH");
148	if (envent != NULL)
149		path = envent->value;
150
151	if (window_pane_spawn(new_wp, argc, argv, path, shell, cwd, env,
152	    s->tio, &cause) != 0)
153		goto error;
154
155	server_redraw_window(w);
156
157	if (!args_has(args, 'd')) {
158		window_set_active_pane(w, new_wp);
159		session_select(s, wl->idx);
160		server_redraw_session(s);
161	} else
162		server_status_session(s);
163
164	environ_free(env);
165
166	if (args_has(args, 'P')) {
167		if ((template = args_get(args, 'F')) == NULL)
168			template = SPLIT_WINDOW_TEMPLATE;
169
170		ft = format_create(cmdq, 0);
171		format_defaults(ft, cmdq->state.c, s, wl, new_wp);
172
173		cp = format_expand(ft, template);
174		cmdq_print(cmdq, "%s", cp);
175		free(cp);
176
177		format_free(ft);
178	}
179	notify_window_layout_changed(w);
180
181	if (to_free != NULL)
182		free((void *)to_free);
183	return (CMD_RETURN_NORMAL);
184
185error:
186	environ_free(env);
187	if (new_wp != NULL) {
188		layout_close_pane(new_wp);
189		window_remove_pane(w, new_wp);
190	}
191	cmdq_error(cmdq, "create pane failed: %s", cause);
192	free(cause);
193
194	if (to_free != NULL)
195		free((void *)to_free);
196	return (CMD_RETURN_ERROR);
197}
198