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 <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 void             cmd_split_window_key_binding(struct cmd *, int);
  35 enum cmd_retval  cmd_split_window_exec(struct cmd *, struct cmd_q *);
  36
  37 const struct cmd_entry cmd_split_window_entry = {
  38         "split-window", "splitw",
  39         "c:dF:l:hp:Pt:v", 0, 1,
  40         "[-dhvP] [-c start-directory] [-F format] [-p percentage|-l size] "
  41         CMD_TARGET_PANE_USAGE " [command]",
  42         0,
  43         cmd_split_window_key_binding,
  44         cmd_split_window_exec
  45 };
  46
  47 void
  48 cmd_split_window_key_binding(struct cmd *self, int key)
  49 {
  50         self->args = args_create(0);
  51         if (key == '%')
  52                 args_set(self->args, 'h', NULL);
  53 }
  54
  55 enum cmd_retval
  56 cmd_split_window_exec(struct cmd *self, struct cmd_q *cmdq)
  57 {
  58         struct args             *args = self->args;
  59         struct session          *s;
  60         struct winlink          *wl;
  61         struct window           *w;
  62         struct window_pane      *wp, *new_wp = NULL;
  63         struct environ           env;
  64         const char              *cmd, *shell, *template;
  65         char                    *cause, *new_cause, *cp;
  66         u_int                    hlimit;
  67         int                      size, percentage, cwd, fd = -1;
  68         enum layout_type         type;
  69         struct layout_cell      *lc;
  70         struct client           *c;
  71         struct format_tree      *ft;
  72
  73         if ((wl = cmd_find_pane(cmdq, args_get(args, 't'), &s, &wp)) == NULL)
  74                 return (CMD_RETURN_ERROR);
  75         w = wl->window;
  76         server_unzoom_window(w);
  77
  78         environ_init(&env);
  79         environ_copy(&global_environ, &env);
  80         environ_copy(&s->environ, &env);
  81         server_fill_environ(s, &env);
  82
  83         if (args->argc == 0)
  84                 cmd = options_get_string(&s->options, "default-command");
  85         else
  86                 cmd = args->argv[0];
  87
  88         if (args_has(args, 'c')) {
  89                 ft = format_create();
  90                 if ((c = cmd_find_client(cmdq, NULL, 1)) != NULL)
  91                         format_client(ft, c);
  92                 format_session(ft, s);
  93                 format_winlink(ft, s, s->curw);
  94                 format_window_pane(ft, s->curw->window->active);
  95                 cp = format_expand(ft, args_get(args, 'c'));
  96                 format_free(ft);
  97
  98                 fd = open(cp, O_RDONLY|O_DIRECTORY);
  99                 free(cp);
 100                 if (fd == -1) {
 101                         cmdq_error(cmdq, "bad working directory: %s",
 102                             strerror(errno));
 103                         return (CMD_RETURN_ERROR);
 104                 }
 105                 cwd = fd;
 106         } else if (cmdq->client->session == NULL)
 107                 cwd = cmdq->client->cwd;
 108         else
 109                 cwd = s->cwd;
 110
 111         type = LAYOUT_TOPBOTTOM;
 112         if (args_has(args, 'h'))
 113                 type = LAYOUT_LEFTRIGHT;
 114
 115         size = -1;
 116         if (args_has(args, 'l')) {
 117                 size = args_strtonum(args, 'l', 0, INT_MAX, &cause);
 118                 if (cause != NULL) {
 119                         xasprintf(&new_cause, "size %s", cause);
 120                         free(cause);
 121                         cause = new_cause;
 122                         goto error;
 123                 }
 124         } else if (args_has(args, 'p')) {
 125                 percentage = args_strtonum(args, 'p', 0, INT_MAX, &cause);
 126                 if (cause != NULL) {
 127                         xasprintf(&new_cause, "percentage %s", cause);
 128                         free(cause);
 129                         cause = new_cause;
 130                         goto error;
 131                 }
 132                 if (type == LAYOUT_TOPBOTTOM)
 133                         size = (wp->sy * percentage) / 100;
 134                 else
 135                         size = (wp->sx * percentage) / 100;
 136         }
 137         hlimit = options_get_number(&s->options, "history-limit");
 138
 139         shell = options_get_string(&s->options, "default-shell");
 140         if (*shell == '\0' || areshell(shell))
 141                 shell = _PATH_BSHELL;
 142
 143         if ((lc = layout_split_pane(wp, type, size, 0)) == NULL) {
 144                 cause = xstrdup("pane too small");
 145                 goto error;
 146         }
 147         new_wp = window_add_pane(w, hlimit);
 148         if (window_pane_spawn(
 149             new_wp, cmd, shell, cwd, &env, s->tio, &cause) != 0)
 150                 goto error;
 151         layout_assign_pane(lc, new_wp);
 152
 153         server_redraw_window(w);
 154
 155         if (!args_has(args, 'd')) {
 156                 window_set_active_pane(w, new_wp);
 157                 session_select(s, wl->idx);
 158                 server_redraw_session(s);
 159         } else
 160                 server_status_session(s);
 161
 162         environ_free(&env);
 163
 164         if (args_has(args, 'P')) {
 165                 if ((template = args_get(args, 'F')) == NULL)
 166                         template = SPLIT_WINDOW_TEMPLATE;
 167
 168                 ft = format_create();
 169                 if ((c = cmd_find_client(cmdq, NULL, 1)) != NULL)
 170                         format_client(ft, c);
 171                 format_session(ft, s);
 172                 format_winlink(ft, s, wl);
 173                 format_window_pane(ft, new_wp);
 174
 175                 cp = format_expand(ft, template);
 176                 cmdq_print(cmdq, "%s", cp);
 177                 free(cp);
 178
 179                 format_free(ft);
 180         }
 181         notify_window_layout_changed(w);
 182
 183         if (fd != -1)
 184                 close(fd);
 185         return (CMD_RETURN_NORMAL);
 186
 187 error:
 188         environ_free(&env);
 189         if (new_wp != NULL)
 190                 window_remove_pane(w, new_wp);
 191         cmdq_error(cmdq, "create pane failed: %s", cause);
 192         free(cause);
 193         if (fd != -1)
 194                 close(fd);
 195         return (CMD_RETURN_ERROR);
 196 }