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_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, percentage, flags, input;
  69         const char              *template, *errstr, *p;
  70         char                    *cause, *cp, *copy;
  71         size_t                   plen;
  72         struct args_value       *av;
  73         u_int                    count = args_count(args);
  74
  75         if (args_has(args, 'h'))
  76                 type = LAYOUT_LEFTRIGHT;
  77         else
  78                 type = LAYOUT_TOPBOTTOM;
  79         if ((p = args_get(args, 'l')) != NULL) {
  80                 plen = strlen(p);
  81                 if (p[plen - 1] == '%') {
  82                         copy = xstrdup(p);
  83                         copy[plen - 1] = '\0';
  84                         percentage = strtonum(copy, 0, INT_MAX, &errstr);
  85                         free(copy);
  86                         if (errstr != NULL) {
  87                                 cmdq_error(item, "percentage %s", errstr);
  88                                 return (CMD_RETURN_ERROR);
  89                         }
  90                         if (type == LAYOUT_TOPBOTTOM)
  91                                 size = (wp->sy * percentage) / 100;
  92                         else
  93                                 size = (wp->sx * percentage) / 100;
  94                 } else {
  95                         size = args_strtonum(args, 'l', 0, INT_MAX, &cause);
  96                         if (cause != NULL) {
  97                                 cmdq_error(item, "lines %s", cause);
  98                                 free(cause);
  99                                 return (CMD_RETURN_ERROR);
 100                         }
 101                 }
 102         } else if (args_has(args, 'p')) {
 103                 percentage = args_strtonum(args, 'p', 0, INT_MAX, &cause);
 104                 if (cause != NULL) {
 105                         cmdq_error(item, "create pane failed: -p %s", cause);
 106                         free(cause);
 107                         return (CMD_RETURN_ERROR);
 108                 }
 109                 if (type == LAYOUT_TOPBOTTOM)
 110                         size = (wp->sy * percentage) / 100;
 111                 else
 112                         size = (wp->sx * percentage) / 100;
 113         } else
 114                 size = -1;
 115
 116         window_push_zoom(wp->window, 1, args_has(args, 'Z'));
 117         input = (args_has(args, 'I') && count == 0);
 118
 119         flags = 0;
 120         if (args_has(args, 'b'))
 121                 flags |= SPAWN_BEFORE;
 122         if (args_has(args, 'f'))
 123                 flags |= SPAWN_FULLSIZE;
 124         if (input || (count == 1 && *args_string(args, 0) == '\0'))
 125                 flags |= SPAWN_EMPTY;
 126
 127         lc = layout_split_pane(wp, type, size, flags);
 128         if (lc == NULL) {
 129                 cmdq_error(item, "no space for new pane");
 130                 return (CMD_RETURN_ERROR);
 131         }
 132
 133         sc.item = item;
 134         sc.s = s;
 135         sc.wl = wl;
 136
 137         sc.wp0 = wp;
 138         sc.lc = lc;
 139
 140         args_to_vector(args, &sc.argc, &sc.argv);
 141         sc.environ = environ_create();
 142
 143         av = args_first_value(args, 'e');
 144         while (av != NULL) {
 145                 environ_put(sc.environ, av->string, 0);
 146                 av = args_next_value(av);
 147         }
 148
 149         sc.idx = -1;
 150         sc.cwd = args_get(args, 'c');
 151
 152         sc.flags = flags;
 153         if (args_has(args, 'd'))
 154                 sc.flags |= SPAWN_DETACHED;
 155         if (args_has(args, 'Z'))
 156                 sc.flags |= SPAWN_ZOOM;
 157
 158         if ((new_wp = spawn_pane(&sc, &cause)) == NULL) {
 159                 cmdq_error(item, "create pane failed: %s", cause);
 160                 free(cause);
 161                 if (sc.argv != NULL)
 162                         cmd_free_argv(sc.argc, sc.argv);
 163                 environ_free(sc.environ);
 164                 return (CMD_RETURN_ERROR);
 165         }
 166         if (input) {
 167                 switch (window_pane_start_input(new_wp, item, &cause)) {
 168                 case -1:
 169                         server_client_remove_pane(new_wp);
 170                         layout_close_pane(new_wp);
 171                         window_remove_pane(wp->window, new_wp);
 172                         cmdq_error(item, "%s", cause);
 173                         free(cause);
 174                         if (sc.argv != NULL)
 175                                 cmd_free_argv(sc.argc, sc.argv);
 176                         environ_free(sc.environ);
 177                         return (CMD_RETURN_ERROR);
 178                 case 1:
 179                         input = 0;
 180                         break;
 181                 }
 182         }
 183         if (!args_has(args, 'd'))
 184                 cmd_find_from_winlink_pane(current, wl, new_wp, 0);
 185         window_pop_zoom(wp->window);
 186         server_redraw_window(wp->window);
 187         server_status_session(s);
 188
 189         if (args_has(args, 'P')) {
 190                 if ((template = args_get(args, 'F')) == NULL)
 191                         template = SPLIT_WINDOW_TEMPLATE;
 192                 cp = format_single(item, template, tc, s, wl, new_wp);
 193                 cmdq_print(item, "%s", cp);
 194                 free(cp);
 195         }
 196
 197         cmd_find_from_winlink_pane(&fs, wl, new_wp, 0);
 198         cmdq_insert_hook(s, item, &fs, "after-split-window");
 199
 200         if (sc.argv != NULL)
 201                 cmd_free_argv(sc.argc, sc.argv);
 202         environ_free(sc.environ);
 203         if (input)
 204                 return (CMD_RETURN_WAIT);
 205         return (CMD_RETURN_NORMAL);
 206 }