cmd-split-window.c revision 1.66 
1/* $OpenBSD: cmd-split-window.c,v 1.66 2015/12/13 21:53:57 nicm Exp $ */
2
3/*
4 * Copyright (c) 2009 Nicholas Marriott <nicm@users.sourceforge.net>
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:dF:l:hp:Pt:v", 0, -1 },
43	.usage = "[-bdhvP] [-c start-directory] [-F format] "
44		 "[-p percentage|-l size] " CMD_TARGET_PANE_USAGE " [command]",
45
46	.flags = CMD_PANE_T,
47	.exec = cmd_split_window_exec
48};
49
50enum cmd_retval
51cmd_split_window_exec(struct cmd *self, struct cmd_q *cmdq)
52{
53	struct args		*args = self->args;
54	struct session		*s = cmdq->state.tflag.s;
55	struct winlink		*wl = cmdq->state.tflag.wl;
56	struct window		*w = wl->window;
57	struct window_pane	*wp = cmdq->state.tflag.wp, *new_wp = NULL;
58	struct environ		*env;
59	const char		*cmd, *path, *shell, *template, *cwd, *to_free;
60	char		       **argv, *cause, *new_cause, *cp;
61	u_int			 hlimit;
62	int			 argc, size, percentage;
63	enum layout_type	 type;
64	struct layout_cell	*lc;
65	struct format_tree	*ft;
66	struct environ_entry	*envent;
67
68	server_unzoom_window(w);
69
70	env = environ_create();
71	environ_copy(global_environ, env);
72	environ_copy(s->environ, env);
73	server_fill_environ(s, env);
74
75	if (args->argc == 0) {
76		cmd = options_get_string(s->options, "default-command");
77		if (cmd != NULL && *cmd != '\0') {
78			argc = 1;
79			argv = (char **)&cmd;
80		} else {
81			argc = 0;
82			argv = NULL;
83		}
84	} else {
85		argc = args->argc;
86		argv = args->argv;
87	}
88
89	to_free = NULL;
90	if (args_has(args, 'c')) {
91		ft = format_create(cmdq, 0);
92		format_defaults(ft, cmdq->state.c, s, NULL, NULL);
93		to_free = cwd = format_expand(ft, args_get(args, 'c'));
94		format_free(ft);
95	} else if (cmdq->client != NULL && cmdq->client->session == NULL)
96		cwd = cmdq->client->cwd;
97	else
98		cwd = s->cwd;
99
100	type = LAYOUT_TOPBOTTOM;
101	if (args_has(args, 'h'))
102		type = LAYOUT_LEFTRIGHT;
103
104	size = -1;
105	if (args_has(args, 'l')) {
106		size = args_strtonum(args, 'l', 0, INT_MAX, &cause);
107		if (cause != NULL) {
108			xasprintf(&new_cause, "size %s", cause);
109			free(cause);
110			cause = new_cause;
111			goto error;
112		}
113	} else if (args_has(args, 'p')) {
114		percentage = args_strtonum(args, 'p', 0, INT_MAX, &cause);
115		if (cause != NULL) {
116			xasprintf(&new_cause, "percentage %s", cause);
117			free(cause);
118			cause = new_cause;
119			goto error;
120		}
121		if (type == LAYOUT_TOPBOTTOM)
122			size = (wp->sy * percentage) / 100;
123		else
124			size = (wp->sx * percentage) / 100;
125	}
126	hlimit = options_get_number(s->options, "history-limit");
127
128	shell = options_get_string(s->options, "default-shell");
129	if (*shell == '\0' || areshell(shell))
130		shell = _PATH_BSHELL;
131
132	lc = layout_split_pane(wp, type, size, args_has(args, 'b'));
133	if (lc == NULL) {
134		cause = xstrdup("pane too small");
135		goto error;
136	}
137	new_wp = window_add_pane(w, hlimit);
138	layout_assign_pane(lc, new_wp);
139
140	path = NULL;
141	if (cmdq->client != NULL && cmdq->client->session == NULL)
142		envent = environ_find(cmdq->client->environ, "PATH");
143	else
144		envent = environ_find(s->environ, "PATH");
145	if (envent != NULL)
146		path = envent->value;
147
148	if (window_pane_spawn(new_wp, argc, argv, path, shell, cwd, env,
149	    s->tio, &cause) != 0)
150		goto error;
151
152	server_redraw_window(w);
153
154	if (!args_has(args, 'd')) {
155		window_set_active_pane(w, new_wp);
156		session_select(s, wl->idx);
157		server_redraw_session(s);
158	} else
159		server_status_session(s);
160
161	environ_free(env);
162
163	if (args_has(args, 'P')) {
164		if ((template = args_get(args, 'F')) == NULL)
165			template = SPLIT_WINDOW_TEMPLATE;
166
167		ft = format_create(cmdq, 0);
168		format_defaults(ft, cmdq->state.c, s, wl, new_wp);
169
170		cp = format_expand(ft, template);
171		cmdq_print(cmdq, "%s", cp);
172		free(cp);
173
174		format_free(ft);
175	}
176	notify_window_layout_changed(w);
177
178	if (to_free != NULL)
179		free((void *)to_free);
180	return (CMD_RETURN_NORMAL);
181
182error:
183	environ_free(env);
184	if (new_wp != NULL) {
185		layout_close_pane(new_wp);
186		window_remove_pane(w, new_wp);
187	}
188	cmdq_error(cmdq, "create pane failed: %s", cause);
189	free(cause);
190
191	if (to_free != NULL)
192		free((void *)to_free);
193	return (CMD_RETURN_ERROR);
194}
195