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cmd-split-window.c revision 1.1.1.2 
      1 /* $Id: cmd-split-window.c,v 1.1.1.2 2011/08/17 18:40:04 jmmv 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 <stdlib.h>
     22 #include <unistd.h>
     23 
     24 #include "tmux.h"
     25 
     26 /*
     27  * Split a window (add a new pane).
     28  */
     29 
     30 void	cmd_split_window_key_binding(struct cmd *, int);
     31 int	cmd_split_window_exec(struct cmd *, struct cmd_ctx *);
     32 
     33 const struct cmd_entry cmd_split_window_entry = {
     34 	"split-window", "splitw",
     35 	"dl:hp:Pt:v", 0, 1,
     36 	"[-dhvP] [-p percentage|-l size] [-t target-pane] [command]",
     37 	0,
     38 	cmd_split_window_key_binding,
     39 	NULL,
     40 	cmd_split_window_exec
     41 };
     42 
     43 void
     44 cmd_split_window_key_binding(struct cmd *self, int key)
     45 {
     46 	self->args = args_create(0);
     47 	if (key == '%')
     48 		args_set(self->args, 'h', NULL);
     49 }
     50 
     51 int
     52 cmd_split_window_exec(struct cmd *self, struct cmd_ctx *ctx)
     53 {
     54 	struct args		*args = self->args;
     55 	struct session		*s;
     56 	struct winlink		*wl;
     57 	struct window		*w;
     58 	struct window_pane	*wp, *new_wp = NULL;
     59 	struct environ		 env;
     60 	char		 	*cmd, *cwd, *cause;
     61 	const char		*shell;
     62 	u_int			 hlimit, paneidx;
     63 	int			 size, percentage;
     64 	enum layout_type	 type;
     65 	struct layout_cell	*lc;
     66 
     67 	if ((wl = cmd_find_pane(ctx, args_get(args, 't'), &s, &wp)) == NULL)
     68 		return (-1);
     69 	w = wl->window;
     70 
     71 	environ_init(&env);
     72 	environ_copy(&global_environ, &env);
     73 	environ_copy(&s->environ, &env);
     74 	server_fill_environ(s, &env);
     75 
     76 	if (args->argc == 0)
     77 		cmd = options_get_string(&s->options, "default-command");
     78 	else
     79 		cmd = args->argv[0];
     80 	cwd = options_get_string(&s->options, "default-path");
     81 	if (*cwd == '\0') {
     82 		if (ctx->cmdclient != NULL && ctx->cmdclient->cwd != NULL)
     83 			cwd = ctx->cmdclient->cwd;
     84 		else
     85 			cwd = s->cwd;
     86 	}
     87 
     88 	type = LAYOUT_TOPBOTTOM;
     89 	if (args_has(args, 'h'))
     90 		type = LAYOUT_LEFTRIGHT;
     91 
     92 	size = -1;
     93 	if (args_has(args, 'l')) {
     94 		size = args_strtonum(args, 'l', 0, INT_MAX, &cause);
     95 		if (cause != NULL) {
     96 			ctx->error(ctx, "size %s", cause);
     97 			xfree(cause);
     98 			return (-1);
     99 		}
    100 	} else if (args_has(args, 'p')) {
    101 		percentage = args_strtonum(args, 'p', 0, INT_MAX, &cause);
    102 		if (cause != NULL) {
    103 			ctx->error(ctx, "percentage %s", cause);
    104 			xfree(cause);
    105 			return (-1);
    106 		}
    107 		if (type == LAYOUT_TOPBOTTOM)
    108 			size = (wp->sy * percentage) / 100;
    109 		else
    110 			size = (wp->sx * percentage) / 100;
    111 	}
    112 	hlimit = options_get_number(&s->options, "history-limit");
    113 
    114 	shell = options_get_string(&s->options, "default-shell");
    115 	if (*shell == '\0' || areshell(shell))
    116 		shell = _PATH_BSHELL;
    117 
    118 	if ((lc = layout_split_pane(wp, type, size)) == NULL) {
    119 		cause = xstrdup("pane too small");
    120 		goto error;
    121 	}
    122 	new_wp = window_add_pane(w, hlimit);
    123 	if (window_pane_spawn(
    124 	    new_wp, cmd, shell, cwd, &env, s->tio, &cause) != 0)
    125 		goto error;
    126 	layout_assign_pane(lc, new_wp);
    127 
    128 	server_redraw_window(w);
    129 
    130 	if (!args_has(args, 'd')) {
    131 		window_set_active_pane(w, new_wp);
    132 		session_select(s, wl->idx);
    133 		server_redraw_session(s);
    134 	} else
    135 		server_status_session(s);
    136 
    137 	environ_free(&env);
    138 
    139 	if (args_has(args, 'P')) {
    140 		paneidx = window_pane_index(wl->window, new_wp);
    141 		ctx->print(ctx, "%s:%u.%u", s->name, wl->idx, paneidx);
    142 	}
    143 	return (0);
    144 
    145 error:
    146 	environ_free(&env);
    147 	if (new_wp != NULL)
    148 		window_remove_pane(w, new_wp);
    149 	ctx->error(ctx, "create pane failed: %s", cause);
    150 	xfree(cause);
    151 	return (-1);
    152 }
    153