cmd-split-window.c

   1 /* $OpenBSD$ */
   2
   3 /*
   4  * Copyright (c) 2009 Nicholas Marriott <nicholas.marriott@gmail.com>
   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 #define SPLIT_WINDOW_TEMPLATE "#{session_name}:#{window_index}.#{pane_index}"
  34
  35 static enum cmd_retval  cmd_split_window_exec(struct cmd *,
  36                             struct cmdq_item *);
  37
  38 const struct cmd_entry cmd_split_window_entry = {
  39         .name = "split-window",
  40         .alias = "splitw",
  41
  42         .args = { "bc:de:fF:hIl:p:Pt:vZ", 0, -1, NULL },
  43         .usage = "[-bdefhIPvZ] [-c start-directory] [-e environment] "
  44                  "[-F format] [-l size] " CMD_TARGET_PANE_USAGE
  45                  "[shell-command]",
  46
  47         .target = { 't', CMD_FIND_PANE, 0 },
  48
  49         .flags = 0,
  50         .exec = cmd_split_window_exec
  51 };
  52
  53 static enum cmd_retval
  54 cmd_split_window_exec(struct cmd *self, struct cmdq_item *item)
  55 {
  56         struct args             *args = cmd_get_args(self);
  57         struct cmd_find_state   *current = cmdq_get_current(item);
  58         struct cmd_find_state   *target = cmdq_get_target(item);
  59         struct spawn_context     sc = { 0 };
  60         struct client           *tc = cmdq_get_target_client(item);
  61         struct session          *s = target->s;
  62         struct winlink          *wl = target->wl;
  63         struct window           *w = wl->window;
  64         struct window_pane      *wp = target->wp, *new_wp;
  65         enum layout_type         type;
  66         struct layout_cell      *lc;
  67         struct cmd_find_state    fs;
  68         int                      size, flags, input;
  69         const char              *template;
  70         char                    *cause = NULL, *cp;
  71         struct args_value       *av;
  72         u_int                    count = args_count(args), curval = 0;
  73
  74         type = LAYOUT_TOPBOTTOM;
  75         if (args_has(args, 'h'))
  76                 type = LAYOUT_LEFTRIGHT;
  77
  78         /* If the 'p' flag is dropped then this bit can be moved into 'l'. */
  79         if (args_has(args, 'l') || args_has(args, 'p')) {
  80                 if (args_has(args, 'f')) {
  81                         if (type == LAYOUT_TOPBOTTOM)
  82                                 curval = w->sy;
  83                         else
  84                                 curval = w->sx;
  85                 } else {
  86                         if (type == LAYOUT_TOPBOTTOM)
  87                                 curval = wp->sy;
  88                         else
  89                                 curval = wp->sx;
  90                 }
  91         }
  92
  93         size = -1;
  94         if (args_has(args, 'l')) {
  95                 size = args_percentage_and_expand(args, 'l', 0, INT_MAX, curval,
  96                     item, &cause);
  97         } else if (args_has(args, 'p')) {
  98                 size = args_strtonum_and_expand(args, 'p', 0, 100, item,
  99                     &cause);
 100                 if (cause == NULL)
 101                         size = curval * size / 100;
 102         }
 103         if (cause != NULL) {
 104                 cmdq_error(item, "size %s", cause);
 105                 free(cause);
 106                 return (CMD_RETURN_ERROR);
 107         }
 108
 109         window_push_zoom(wp->window, 1, args_has(args, 'Z'));
 110         input = (args_has(args, 'I') && count == 0);
 111
 112         flags = 0;
 113         if (args_has(args, 'b'))
 114                 flags |= SPAWN_BEFORE;
 115         if (args_has(args, 'f'))
 116                 flags |= SPAWN_FULLSIZE;
 117         if (input || (count == 1 && *args_string(args, 0) == '\0'))
 118                 flags |= SPAWN_EMPTY;
 119
 120         lc = layout_split_pane(wp, type, size, flags);
 121         if (lc == NULL) {
 122                 cmdq_error(item, "no space for new pane");
 123                 return (CMD_RETURN_ERROR);
 124         }
 125
 126         sc.item = item;
 127         sc.s = s;
 128         sc.wl = wl;
 129
 130         sc.wp0 = wp;
 131         sc.lc = lc;
 132
 133         args_to_vector(args, &sc.argc, &sc.argv);
 134         sc.environ = environ_create();
 135
 136         av = args_first_value(args, 'e');
 137         while (av != NULL) {
 138                 environ_put(sc.environ, av->string, 0);
 139                 av = args_next_value(av);
 140         }
 141
 142         sc.idx = -1;
 143         sc.cwd = args_get(args, 'c');
 144
 145         sc.flags = flags;
 146         if (args_has(args, 'd'))
 147                 sc.flags |= SPAWN_DETACHED;
 148         if (args_has(args, 'Z'))
 149                 sc.flags |= SPAWN_ZOOM;
 150
 151         if ((new_wp = spawn_pane(&sc, &cause)) == NULL) {
 152                 cmdq_error(item, "create pane failed: %s", cause);
 153                 free(cause);
 154                 if (sc.argv != NULL)
 155                         cmd_free_argv(sc.argc, sc.argv);
 156                 environ_free(sc.environ);
 157                 return (CMD_RETURN_ERROR);
 158         }
 159         if (input) {
 160                 switch (window_pane_start_input(new_wp, item, &cause)) {
 161                 case -1:
 162                         server_client_remove_pane(new_wp);
 163                         layout_close_pane(new_wp);
 164                         window_remove_pane(wp->window, new_wp);
 165                         cmdq_error(item, "%s", cause);
 166                         free(cause);
 167                         if (sc.argv != NULL)
 168                                 cmd_free_argv(sc.argc, sc.argv);
 169                         environ_free(sc.environ);
 170                         return (CMD_RETURN_ERROR);
 171                 case 1:
 172                         input = 0;
 173                         break;
 174                 }
 175         }
 176         if (!args_has(args, 'd'))
 177                 cmd_find_from_winlink_pane(current, wl, new_wp, 0);
 178         window_pop_zoom(wp->window);
 179         server_redraw_window(wp->window);
 180         server_status_session(s);
 181
 182         if (args_has(args, 'P')) {
 183                 if ((template = args_get(args, 'F')) == NULL)
 184                         template = SPLIT_WINDOW_TEMPLATE;
 185                 cp = format_single(item, template, tc, s, wl, new_wp);
 186                 cmdq_print(item, "%s", cp);
 187                 free(cp);
 188         }
 189
 190         cmd_find_from_winlink_pane(&fs, wl, new_wp, 0);
 191         cmdq_insert_hook(s, item, &fs, "after-split-window");
 192
 193         if (sc.argv != NULL)
 194                 cmd_free_argv(sc.argc, sc.argv);
 195         environ_free(sc.environ);
 196         if (input)
 197                 return (CMD_RETURN_WAIT);
 198         return (CMD_RETURN_NORMAL);
 199 }