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cmd-split-window.c revision 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:de:fF:hIl:p:Pt:v", 0, -1 },
     43 	.usage = "[-bdefhIPv] [-c start-directory] [-e environment] "
     44 		 "[-F format] [-p percentage|-l size] " CMD_TARGET_PANE_USAGE
     45 		 " [command]",
     46 
     47 	.target = { 't', CMD_FIND_PANE, 0 },
     48 
     49 	.flags = 0,
     50 	.exec = cmd_split_window_exec
     51 };
     52 
     53 static enum cmd_retval
     54 cmd_split_window_exec(struct cmd *self, struct cmdq_item *item)
     55 {
     56 	struct args		*args = self->args;
     57 	struct cmd_find_state	*current = &item->shared->current;
     58 	struct spawn_context	 sc;
     59 	struct client		*c = cmd_find_client(item, NULL, 1);
     60 	struct session		*s = item->target.s;
     61 	struct winlink		*wl = item->target.wl;
     62 	struct window_pane	*wp = item->target.wp, *new_wp;
     63 	enum layout_type	 type;
     64 	struct layout_cell	*lc;
     65 	struct cmd_find_state	 fs;
     66 	int			 size, percentage, flags, input;
     67 	const char		*template, *add;
     68 	char			*cause, *cp;
     69 	struct args_value	*value;
     70 
     71 	if (args_has(args, 'h'))
     72 		type = LAYOUT_LEFTRIGHT;
     73 	else
     74 		type = LAYOUT_TOPBOTTOM;
     75 	if (args_has(args, 'l')) {
     76 		size = args_strtonum(args, 'l', 0, INT_MAX, &cause);
     77 		if (cause != NULL) {
     78 			cmdq_error(item, "create pane failed: -l %s", cause);
     79 			free(cause);
     80 			return (CMD_RETURN_ERROR);
     81 		}
     82 	} else if (args_has(args, 'p')) {
     83 		percentage = args_strtonum(args, 'p', 0, INT_MAX, &cause);
     84 		if (cause != NULL) {
     85 			cmdq_error(item, "create pane failed: -p %s", cause);
     86 			free(cause);
     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 = -1;
     95 
     96 	server_unzoom_window(wp->window);
     97 	input = (args_has(args, 'I') && args->argc == 0);
     98 
     99 	flags = 0;
    100 	if (args_has(args, 'b'))
    101 		flags |= SPAWN_BEFORE;
    102 	if (args_has(args, 'f'))
    103 		flags |= SPAWN_FULLSIZE;
    104 	if (input || (args->argc == 1 && *args->argv[0] == '\0'))
    105 		flags |= SPAWN_EMPTY;
    106 
    107 	lc = layout_split_pane(wp, type, size, flags);
    108 	if (lc == NULL) {
    109 		cmdq_error(item, "no space for new pane");
    110 		return (CMD_RETURN_ERROR);
    111 	}
    112 
    113 	memset(&sc, 0, sizeof sc);
    114 	sc.item = item;
    115 	sc.s = s;
    116 	sc.wl = wl;
    117 
    118 	sc.wp0 = wp;
    119 	sc.lc = lc;
    120 
    121 	sc.name = NULL;
    122 	sc.argc = args->argc;
    123 	sc.argv = args->argv;
    124 	sc.environ = environ_create();
    125 
    126 	add = args_first_value(args, 'e', &value);
    127 	while (add != NULL) {
    128 		environ_put(sc.environ, add);
    129 		add = args_next_value(&value);
    130 	}
    131 
    132 	sc.idx = -1;
    133 	sc.cwd = args_get(args, 'c');
    134 
    135 	sc.flags = flags;
    136 	if (args_has(args, 'd'))
    137 		sc.flags |= SPAWN_DETACHED;
    138 
    139 	if ((new_wp = spawn_pane(&sc, &cause)) == NULL) {
    140 		layout_close_pane(new_wp);
    141 		cmdq_error(item, "create pane failed: %s", cause);
    142 		free(cause);
    143 		return (CMD_RETURN_ERROR);
    144 	}
    145 	if (input && window_pane_start_input(new_wp, item, &cause) != 0) {
    146 		layout_close_pane(new_wp);
    147 		window_remove_pane(wp->window, new_wp);
    148 		cmdq_error(item, "%s", cause);
    149 		free(cause);
    150 		return (CMD_RETURN_ERROR);
    151 	}
    152 	if (!args_has(args, 'd'))
    153 		cmd_find_from_winlink_pane(current, wl, new_wp, 0);
    154 	server_redraw_window(wp->window);
    155 	server_status_session(s);
    156 
    157 	if (args_has(args, 'P')) {
    158 		if ((template = args_get(args, 'F')) == NULL)
    159 			template = SPLIT_WINDOW_TEMPLATE;
    160 		cp = format_single(item, template, c, s, wl, new_wp);
    161 		cmdq_print(item, "%s", cp);
    162 		free(cp);
    163 	}
    164 
    165 	cmd_find_from_winlink_pane(&fs, wl, new_wp, 0);
    166 	cmdq_insert_hook(s, item, &fs, "after-split-window");
    167 
    168 	environ_free(sc.environ);
    169 	if (input)
    170 		return (CMD_RETURN_WAIT);
    171 	return (CMD_RETURN_NORMAL);
    172 }
    173