cmd-split-window.c

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