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 <paths.h>
  24 #include <stdlib.h>
  25 #include <string.h>
  26 #include <unistd.h>
  27
  28 #include "tmux.h"
  29
  30 /*
  31  * Split a window (add a new pane).
  32  */
  33
  34 #define SPLIT_WINDOW_TEMPLATE "#{session_name}:#{window_index}.#{pane_index}"
  35
  36 static enum cmd_retval  cmd_split_window_exec(struct cmd *,
  37                             struct cmdq_item *);
  38
  39 const struct cmd_entry cmd_split_window_entry = {
  40         .name = "split-window",
  41         .alias = "splitw",
  42
  43         .args = { "bc:de:fF:hIl:p:Pt:vZ", 0, -1, NULL },
  44         .usage = "[-bdefhIPvZ] [-c start-directory] [-e environment] "
  45                  "[-F format] [-l size] " CMD_TARGET_PANE_USAGE
  46                  "[shell-command]",
  47
  48         .target = { 't', CMD_FIND_PANE, 0 },
  49
  50         .flags = 0,
  51         .exec = cmd_split_window_exec
  52 };
  53
  54 static enum cmd_retval
  55 cmd_split_window_exec(struct cmd *self, struct cmdq_item *item)
  56 {
  57         struct args             *args = cmd_get_args(self);
  58         struct cmd_find_state   *current = cmdq_get_current(item);
  59         struct cmd_find_state   *target = cmdq_get_target(item);
  60         struct spawn_context     sc = { 0 };
  61         struct client           *tc = cmdq_get_target_client(item);
  62         struct session          *s = target->s;
  63         struct winlink          *wl = target->wl;
  64         struct window           *w = wl->window;
  65         struct window_pane      *wp = target->wp, *new_wp;
  66         enum layout_type         type;
  67         struct layout_cell      *lc;
  68         struct cmd_find_state    fs;
  69         int                      size, flags, input;
  70         const char              *template;
  71         char                    *cause = NULL, *cp;
  72         struct args_value       *av;
  73         u_int                    count = args_count(args), curval = 0;
  74
  75         type = LAYOUT_TOPBOTTOM;
  76         if (args_has(args, 'h'))
  77                 type = LAYOUT_LEFTRIGHT;
  78
  79         /* If the 'p' flag is dropped then this bit can be moved into 'l'. */
  80         if (args_has(args, 'l') || args_has(args, 'p')) {
  81                 if (args_has(args, 'f')) {
  82                         if (type == LAYOUT_TOPBOTTOM)
  83                                 curval = w->sy;
  84                         else
  85                                 curval = w->sx;
  86                 } else {
  87                         if (type == LAYOUT_TOPBOTTOM)
  88                                 curval = wp->sy;
  89                         else
  90                                 curval = wp->sx;
  91                 }
  92         }
  93
  94         size = -1;
  95         if (args_has(args, 'l')) {
  96                 size = args_percentage_and_expand(args, 'l', 0, INT_MAX, curval,
  97                     item, &cause);
  98         } else if (args_has(args, 'p')) {
  99                 size = args_strtonum_and_expand(args, 'p', 0, 100, item,
 100                     &cause);
 101                 if (cause == NULL)
 102                         size = curval * size / 100;
 103         }
 104         if (cause != NULL) {
 105                 cmdq_error(item, "size %s", cause);
 106                 free(cause);
 107                 return (CMD_RETURN_ERROR);
 108         }
 109
 110         window_push_zoom(wp->window, 1, args_has(args, 'Z'));
 111         input = (args_has(args, 'I') && count == 0);
 112
 113         flags = 0;
 114         if (args_has(args, 'b'))
 115                 flags |= SPAWN_BEFORE;
 116         if (args_has(args, 'f'))
 117                 flags |= SPAWN_FULLSIZE;
 118         if (input || (count == 1 && *args_string(args, 0) == '\0'))
 119                 flags |= SPAWN_EMPTY;
 120
 121         lc = layout_split_pane(wp, type, size, flags);
 122         if (lc == NULL) {
 123                 cmdq_error(item, "no space for new pane");
 124                 return (CMD_RETURN_ERROR);
 125         }
 126
 127         sc.item = item;
 128         sc.s = s;
 129         sc.wl = wl;
 130
 131         sc.wp0 = wp;
 132         sc.lc = lc;
 133
 134         args_to_vector(args, &sc.argc, &sc.argv);
 135         sc.environ = environ_create();
 136
 137         av = args_first_value(args, 'e');
 138         while (av != NULL) {
 139                 environ_put(sc.environ, av->string, 0);
 140                 av = args_next_value(av);
 141         }
 142
 143         sc.idx = -1;
 144         sc.cwd = args_get(args, 'c');
 145
 146         sc.flags = flags;
 147         if (args_has(args, 'd'))
 148                 sc.flags |= SPAWN_DETACHED;
 149         if (args_has(args, 'Z'))
 150                 sc.flags |= SPAWN_ZOOM;
 151
 152         if ((new_wp = spawn_pane(&sc, &cause)) == NULL) {
 153                 cmdq_error(item, "create pane failed: %s", cause);
 154                 free(cause);
 155                 if (sc.argv != NULL)
 156                         cmd_free_argv(sc.argc, sc.argv);
 157                 environ_free(sc.environ);
 158                 return (CMD_RETURN_ERROR);
 159         }
 160         if (input) {
 161                 switch (window_pane_start_input(new_wp, item, &cause)) {
 162                 case -1:
 163                         server_client_remove_pane(new_wp);
 164                         layout_close_pane(new_wp);
 165                         window_remove_pane(wp->window, new_wp);
 166                         cmdq_error(item, "%s", cause);
 167                         free(cause);
 168                         if (sc.argv != NULL)
 169                                 cmd_free_argv(sc.argc, sc.argv);
 170                         environ_free(sc.environ);
 171                         return (CMD_RETURN_ERROR);
 172                 case 1:
 173                         input = 0;
 174                         break;
 175                 }
 176         }
 177         if (!args_has(args, 'd'))
 178                 cmd_find_from_winlink_pane(current, wl, new_wp, 0);
 179         window_pop_zoom(wp->window);
 180         server_redraw_window(wp->window);
 181         server_status_session(s);
 182
 183         if (args_has(args, 'P')) {
 184                 if ((template = args_get(args, 'F')) == NULL)
 185                         template = SPLIT_WINDOW_TEMPLATE;
 186                 cp = format_single(item, template, tc, s, wl, new_wp);
 187                 cmdq_print(item, "%s", cp);
 188                 free(cp);
 189         }
 190
 191         cmd_find_from_winlink_pane(&fs, wl, new_wp, 0);
 192         cmdq_insert_hook(s, item, &fs, "after-split-window");
 193
 194         if (sc.argv != NULL)
 195                 cmd_free_argv(sc.argc, sc.argv);
 196         environ_free(sc.environ);
 197         if (input)
 198                 return (CMD_RETURN_WAIT);
 199         return (CMD_RETURN_NORMAL);
 200 }