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cmd-split-window.c revision 1.1.1.8 
      1 /* $OpenBSD$ */
      2 
      3 /*
      4  * Copyright (c) 2009 Nicholas Marriott <nicholas.marriott (at) 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 <stdlib.h>
     24 #include <string.h>
     25 #include <unistd.h>
     26 
     27 #include "tmux.h"
     28 
     29 /*
     30  * Split a window (add a new pane).
     31  */
     32 
     33 #define SPLIT_WINDOW_TEMPLATE "#{session_name}:#{window_index}.#{pane_index}"
     34 
     35 static enum cmd_retval	cmd_split_window_exec(struct cmd *,
     36 			    struct cmdq_item *);
     37 
     38 const 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 	.target = { 't', CMD_FIND_PANE, 0 },
     47 
     48 	.flags = 0,
     49 	.exec = cmd_split_window_exec
     50 };
     51 
     52 static enum cmd_retval
     53 cmd_split_window_exec(struct cmd *self, struct cmdq_item *item)
     54 {
     55 	struct cmd_find_state	*current = &item->shared->current;
     56 	struct args		*args = self->args;
     57 	struct client		*c = cmd_find_client(item, NULL, 1);
     58 	struct session		*s = item->target.s;
     59 	struct winlink		*wl = item->target.wl;
     60 	struct window		*w = wl->window;
     61 	struct window_pane	*wp = item->target.wp, *new_wp = NULL;
     62 	struct environ		*env;
     63 	const char		*cmd, *path, *shell, *template, *cwd;
     64 	char		       **argv, *cause, *new_cause, *cp, *to_free = NULL;
     65 	u_int			 hlimit;
     66 	int			 argc, size, percentage;
     67 	enum layout_type	 type;
     68 	struct layout_cell	*lc;
     69 	struct environ_entry	*envent;
     70 	struct cmd_find_state    fs;
     71 
     72 	server_unzoom_window(w);
     73 
     74 	if (args->argc == 0) {
     75 		cmd = options_get_string(s->options, "default-command");
     76 		if (cmd != NULL && *cmd != '\0') {
     77 			argc = 1;
     78 			argv = (char **)&cmd;
     79 		} else {
     80 			argc = 0;
     81 			argv = NULL;
     82 		}
     83 	} else {
     84 		argc = args->argc;
     85 		argv = args->argv;
     86 	}
     87 
     88 	if (args_has(args, 'c')) {
     89 		cwd = args_get(args, 'c');
     90 		to_free = format_single(item, cwd, c, s, NULL, NULL);
     91 		cwd = to_free;
     92 	} else if (item->client != NULL && item->client->session == NULL)
     93 		cwd = item->client->cwd;
     94 	else
     95 		cwd = s->cwd;
     96 
     97 	type = LAYOUT_TOPBOTTOM;
     98 	if (args_has(args, 'h'))
     99 		type = LAYOUT_LEFTRIGHT;
    100 
    101 	size = -1;
    102 	if (args_has(args, 'l')) {
    103 		size = args_strtonum(args, 'l', 0, INT_MAX, &cause);
    104 		if (cause != NULL) {
    105 			xasprintf(&new_cause, "size %s", cause);
    106 			free(cause);
    107 			cause = new_cause;
    108 			goto error;
    109 		}
    110 	} else if (args_has(args, 'p')) {
    111 		percentage = args_strtonum(args, 'p', 0, INT_MAX, &cause);
    112 		if (cause != NULL) {
    113 			xasprintf(&new_cause, "percentage %s", cause);
    114 			free(cause);
    115 			cause = new_cause;
    116 			goto error;
    117 		}
    118 		if (type == LAYOUT_TOPBOTTOM)
    119 			size = (wp->sy * percentage) / 100;
    120 		else
    121 			size = (wp->sx * percentage) / 100;
    122 	}
    123 	hlimit = options_get_number(s->options, "history-limit");
    124 
    125 	shell = options_get_string(s->options, "default-shell");
    126 	if (*shell == '\0' || areshell(shell))
    127 		shell = _PATH_BSHELL;
    128 
    129 	lc = layout_split_pane(wp, type, size, args_has(args, 'b'),
    130 	    args_has(args, 'f'));
    131 	if (lc == NULL) {
    132 		cause = xstrdup("pane too small");
    133 		goto error;
    134 	}
    135 	new_wp = window_add_pane(w, wp, args_has(args, 'b'), hlimit);
    136 	layout_make_leaf(lc, new_wp);
    137 
    138 	path = NULL;
    139 	if (item->client != NULL && item->client->session == NULL)
    140 		envent = environ_find(item->client->environ, "PATH");
    141 	else
    142 		envent = environ_find(s->environ, "PATH");
    143 	if (envent != NULL)
    144 		path = envent->value;
    145 
    146 	env = environ_for_session(s, 0);
    147 	if (window_pane_spawn(new_wp, argc, argv, path, shell, cwd, env,
    148 	    s->tio, &cause) != 0) {
    149 		environ_free(env);
    150 		goto error;
    151 	}
    152 	environ_free(env);
    153 
    154 	layout_fix_panes(w, w->sx, w->sy);
    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 		cmd_find_from_session(current, s, 0);
    161 		server_redraw_session(s);
    162 	} else
    163 		server_status_session(s);
    164 
    165 	if (args_has(args, 'P')) {
    166 		if ((template = args_get(args, 'F')) == NULL)
    167 			template = SPLIT_WINDOW_TEMPLATE;
    168 		cp = format_single(item, template, c, s, wl, new_wp);
    169 		cmdq_print(item, "%s", cp);
    170 		free(cp);
    171 	}
    172 	notify_window("window-layout-changed", w);
    173 
    174 	cmd_find_from_winlink_pane(&fs, wl, new_wp, 0);
    175 	hooks_insert(s->hooks, item, &fs, "after-split-window");
    176 
    177 	free(to_free);
    178 	return (CMD_RETURN_NORMAL);
    179 
    180 error:
    181 	if (new_wp != NULL) {
    182 		layout_close_pane(new_wp);
    183 		window_remove_pane(w, new_wp);
    184 	}
    185 	cmdq_error(item, "create pane failed: %s", cause);
    186 	free(cause);
    187 
    188 	free(to_free);
    189 	return (CMD_RETURN_ERROR);
    190 }
    191