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