Home | History | Annotate | Line # | Download | only in dist
cmd-split-window.c revision 1.1.1.3
      1 /* $Id: cmd-split-window.c,v 1.1.1.3 2014/07/24 14:22:51 christos Exp $ */
      2 
      3 /*
      4  * Copyright (c) 2009 Nicholas Marriott <nicm (at) 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 <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 void		 cmd_split_window_key_binding(struct cmd *, int);
     34 enum cmd_retval	 cmd_split_window_exec(struct cmd *, struct cmd_q *);
     35 
     36 const struct cmd_entry cmd_split_window_entry = {
     37 	"split-window", "splitw",
     38 	"c:dF:l:hp:Pt:v", 0, 1,
     39 	"[-dhvP] [-c start-directory] [-F format] [-p percentage|-l size] "
     40 	CMD_TARGET_PANE_USAGE " [command]",
     41 	0,
     42 	cmd_split_window_key_binding,
     43 	cmd_split_window_exec
     44 };
     45 
     46 void
     47 cmd_split_window_key_binding(struct cmd *self, int key)
     48 {
     49 	self->args = args_create(0);
     50 	if (key == '%')
     51 		args_set(self->args, 'h', NULL);
     52 }
     53 
     54 enum cmd_retval
     55 cmd_split_window_exec(struct cmd *self, struct cmd_q *cmdq)
     56 {
     57 	struct args		*args = self->args;
     58 	struct session		*s;
     59 	struct winlink		*wl;
     60 	struct window		*w;
     61 	struct window_pane	*wp, *new_wp = NULL;
     62 	struct environ		 env;
     63 	const char		*cmd, *shell, *template;
     64 	char			*cause, *new_cause, *cp;
     65 	u_int			 hlimit;
     66 	int			 size, percentage, cwd, fd = -1;
     67 	enum layout_type	 type;
     68 	struct layout_cell	*lc;
     69 	struct client		*c;
     70 	struct format_tree	*ft;
     71 
     72 	if ((wl = cmd_find_pane(cmdq, args_get(args, 't'), &s, &wp)) == NULL)
     73 		return (CMD_RETURN_ERROR);
     74 	w = wl->window;
     75 	server_unzoom_window(w);
     76 
     77 	environ_init(&env);
     78 	environ_copy(&global_environ, &env);
     79 	environ_copy(&s->environ, &env);
     80 	server_fill_environ(s, &env);
     81 
     82 	if (args->argc == 0)
     83 		cmd = options_get_string(&s->options, "default-command");
     84 	else
     85 		cmd = args->argv[0];
     86 
     87 	if (args_has(args, 'c')) {
     88 		ft = format_create();
     89 		if ((c = cmd_find_client(cmdq, NULL, 1)) != NULL)
     90 			format_client(ft, c);
     91 		format_session(ft, s);
     92 		format_winlink(ft, s, s->curw);
     93 		format_window_pane(ft, s->curw->window->active);
     94 		cp = format_expand(ft, args_get(args, 'c'));
     95 		format_free(ft);
     96 
     97 		if (cp != NULL && *cp != '\0') {
     98 			fd = open(cp, O_RDONLY|O_DIRECTORY);
     99 			free(cp);
    100 			if (fd == -1) {
    101 				cmdq_error(cmdq, "bad working directory: %s",
    102 				    strerror(errno));
    103 				return (CMD_RETURN_ERROR);
    104 			}
    105 		} else if (cp != NULL)
    106 			free(cp);
    107 		cwd = fd;
    108 	} else if (cmdq->client != NULL && cmdq->client->session == NULL)
    109 		cwd = cmdq->client->cwd;
    110 	else
    111 		cwd = s->cwd;
    112 
    113 	type = LAYOUT_TOPBOTTOM;
    114 	if (args_has(args, 'h'))
    115 		type = LAYOUT_LEFTRIGHT;
    116 
    117 	size = -1;
    118 	if (args_has(args, 'l')) {
    119 		size = args_strtonum(args, 'l', 0, INT_MAX, &cause);
    120 		if (cause != NULL) {
    121 			xasprintf(&new_cause, "size %s", cause);
    122 			free(cause);
    123 			cause = new_cause;
    124 			goto error;
    125 		}
    126 	} else if (args_has(args, 'p')) {
    127 		percentage = args_strtonum(args, 'p', 0, INT_MAX, &cause);
    128 		if (cause != NULL) {
    129 			xasprintf(&new_cause, "percentage %s", cause);
    130 			free(cause);
    131 			cause = new_cause;
    132 			goto error;
    133 		}
    134 		if (type == LAYOUT_TOPBOTTOM)
    135 			size = (wp->sy * percentage) / 100;
    136 		else
    137 			size = (wp->sx * percentage) / 100;
    138 	}
    139 	hlimit = options_get_number(&s->options, "history-limit");
    140 
    141 	shell = options_get_string(&s->options, "default-shell");
    142 	if (*shell == '\0' || areshell(shell))
    143 		shell = _PATH_BSHELL;
    144 
    145 	if ((lc = layout_split_pane(wp, type, size, 0)) == NULL) {
    146 		cause = xstrdup("pane too small");
    147 		goto error;
    148 	}
    149 	new_wp = window_add_pane(w, hlimit);
    150 	if (window_pane_spawn(
    151 	    new_wp, cmd, shell, cwd, &env, s->tio, &cause) != 0)
    152 		goto error;
    153 	layout_assign_pane(lc, new_wp);
    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();
    171 		if ((c = cmd_find_client(cmdq, NULL, 1)) != NULL)
    172 			format_client(ft, c);
    173 		format_session(ft, s);
    174 		format_winlink(ft, s, wl);
    175 		format_window_pane(ft, new_wp);
    176 
    177 		cp = format_expand(ft, template);
    178 		cmdq_print(cmdq, "%s", cp);
    179 		free(cp);
    180 
    181 		format_free(ft);
    182 	}
    183 	notify_window_layout_changed(w);
    184 
    185 	if (fd != -1)
    186 		close(fd);
    187 	return (CMD_RETURN_NORMAL);
    188 
    189 error:
    190 	environ_free(&env);
    191 	if (new_wp != NULL)
    192 		window_remove_pane(w, new_wp);
    193 	cmdq_error(cmdq, "create pane failed: %s", cause);
    194 	free(cause);
    195 	if (fd != -1)
    196 		close(fd);
    197 	return (CMD_RETURN_ERROR);
    198 }
    199