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 enum cmd_retval  cmd_split_window_exec(struct cmd *, struct cmd_q *);
  33
  34 const struct cmd_entry cmd_split_window_entry = {
  35         "split-window", "splitw",
  36         "c:dF:l:hp:Pt:v", 0, 1,
  37         "[-dhvP] [-c start-directory] [-F format] [-p percentage|-l size] "
  38         CMD_TARGET_PANE_USAGE " [command]",
  39         0,
  40         cmd_split_window_key_binding,
  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 enum cmd_retval
  53 cmd_split_window_exec(struct cmd *self, struct cmd_q *cmdq)
  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         const char              *cmd, *cwd, *shell;
  62         char                    *cause, *new_cause;
  63         u_int                    hlimit;
  64         int                      size, percentage;
  65         enum layout_type         type;
  66         struct layout_cell      *lc;
  67         const char              *template;
  68         struct client           *c;
  69         struct format_tree      *ft;
  70         char                    *cp;
  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         cwd = cmdq_default_path(cmdq, args_get(args, 'c'));
  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                         xasprintf(&new_cause, "size %s", cause);
  97                         free(cause);
  98                         cause = new_cause;
  99                         goto error;
 100                 }
 101         } else if (args_has(args, 'p')) {
 102                 percentage = args_strtonum(args, 'p', 0, INT_MAX, &cause);
 103                 if (cause != NULL) {
 104                         xasprintf(&new_cause, "percentage %s", cause);
 105                         free(cause);
 106                         cause = new_cause;
 107                         goto error;
 108                 }
 109                 if (type == LAYOUT_TOPBOTTOM)
 110                         size = (wp->sy * percentage) / 100;
 111                 else
 112                         size = (wp->sx * percentage) / 100;
 113         }
 114         hlimit = options_get_number(&s->options, "history-limit");
 115
 116         shell = options_get_string(&s->options, "default-shell");
 117         if (*shell == '\0' || areshell(shell))
 118                 shell = _PATH_BSHELL;
 119
 120         if ((lc = layout_split_pane(wp, type, size, 0)) == NULL) {
 121                 cause = xstrdup("pane too small");
 122                 goto error;
 123         }
 124         new_wp = window_add_pane(w, hlimit);
 125         if (window_pane_spawn(
 126             new_wp, cmd, shell, cwd, &env, s->tio, &cause) != 0)
 127                 goto error;
 128         layout_assign_pane(lc, new_wp);
 129
 130         server_redraw_window(w);
 131
 132         if (!args_has(args, 'd')) {
 133                 window_set_active_pane(w, new_wp);
 134                 session_select(s, wl->idx);
 135                 server_redraw_session(s);
 136         } else
 137                 server_status_session(s);
 138
 139         environ_free(&env);
 140
 141         if (args_has(args, 'P')) {
 142                 if ((template = args_get(args, 'F')) == NULL)
 143                         template = SPLIT_WINDOW_TEMPLATE;
 144
 145                 ft = format_create();
 146                 if ((c = cmd_find_client(cmdq, NULL, 1)) != NULL)
 147                         format_client(ft, c);
 148                 format_session(ft, s);
 149                 format_winlink(ft, s, wl);
 150                 format_window_pane(ft, new_wp);
 151
 152                 cp = format_expand(ft, template);
 153                 cmdq_print(cmdq, "%s", cp);
 154                 free(cp);
 155
 156                 format_free(ft);
 157         }
 158         notify_window_layout_changed(w);
 159         return (CMD_RETURN_NORMAL);
 160
 161 error:
 162         environ_free(&env);
 163         if (new_wp != NULL)
 164                 window_remove_pane(w, new_wp);
 165         cmdq_error(cmdq, "create pane failed: %s", cause);
 166         free(cause);
 167         return (CMD_RETURN_ERROR);
 168 }