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                 if (cp != NULL && *cp != '\0') {
  99                         fd = open(cp, O_RDONLY|O_DIRECTORY);
 100                         free(cp);
 101                         if (fd == -1) {
 102                                 cmdq_error(cmdq, "bad working directory: %s",
 103                                     strerror(errno));
 104                                 return (CMD_RETURN_ERROR);
 105                         }
 106                 } else if (cp != NULL)
 107                         free(cp);
 108                 cwd = fd;
 109         } else if (cmdq->client != NULL && cmdq->client->session == NULL)
 110                 cwd = cmdq->client->cwd;
 111         else
 112                 cwd = s->cwd;
 113
 114         type = LAYOUT_TOPBOTTOM;
 115         if (args_has(args, 'h'))
 116                 type = LAYOUT_LEFTRIGHT;
 117
 118         size = -1;
 119         if (args_has(args, 'l')) {
 120                 size = args_strtonum(args, 'l', 0, INT_MAX, &cause);
 121                 if (cause != NULL) {
 122                         xasprintf(&new_cause, "size %s", cause);
 123                         free(cause);
 124                         cause = new_cause;
 125                         goto error;
 126                 }
 127         } else if (args_has(args, 'p')) {
 128                 percentage = args_strtonum(args, 'p', 0, INT_MAX, &cause);
 129                 if (cause != NULL) {
 130                         xasprintf(&new_cause, "percentage %s", cause);
 131                         free(cause);
 132                         cause = new_cause;
 133                         goto error;
 134                 }
 135                 if (type == LAYOUT_TOPBOTTOM)
 136                         size = (wp->sy * percentage) / 100;
 137                 else
 138                         size = (wp->sx * percentage) / 100;
 139         }
 140         hlimit = options_get_number(&s->options, "history-limit");
 141
 142         shell = options_get_string(&s->options, "default-shell");
 143         if (*shell == '\0' || areshell(shell))
 144                 shell = _PATH_BSHELL;
 145
 146         if ((lc = layout_split_pane(wp, type, size, 0)) == NULL) {
 147                 cause = xstrdup("pane too small");
 148                 goto error;
 149         }
 150         new_wp = window_add_pane(w, hlimit);
 151         if (window_pane_spawn(
 152             new_wp, cmd, shell, cwd, &env, s->tio, &cause) != 0)
 153                 goto error;
 154         layout_assign_pane(lc, new_wp);
 155
 156         server_redraw_window(w);
 157
 158         if (!args_has(args, 'd')) {
 159                 window_set_active_pane(w, new_wp);
 160                 session_select(s, wl->idx);
 161                 server_redraw_session(s);
 162         } else
 163                 server_status_session(s);
 164
 165         environ_free(&env);
 166
 167         if (args_has(args, 'P')) {
 168                 if ((template = args_get(args, 'F')) == NULL)
 169                         template = SPLIT_WINDOW_TEMPLATE;
 170
 171                 ft = format_create();
 172                 if ((c = cmd_find_client(cmdq, NULL, 1)) != NULL)
 173                         format_client(ft, c);
 174                 format_session(ft, s);
 175                 format_winlink(ft, s, wl);
 176                 format_window_pane(ft, new_wp);
 177
 178                 cp = format_expand(ft, template);
 179                 cmdq_print(cmdq, "%s", cp);
 180                 free(cp);
 181
 182                 format_free(ft);
 183         }
 184         notify_window_layout_changed(w);
 185
 186         if (fd != -1)
 187                 close(fd);
 188         return (CMD_RETURN_NORMAL);
 189
 190 error:
 191         environ_free(&env);
 192         if (new_wp != NULL)
 193                 window_remove_pane(w, new_wp);
 194         cmdq_error(cmdq, "create pane failed: %s", cause);
 195         free(cause);
 196         if (fd != -1)
 197                 close(fd);
 198         return (CMD_RETURN_ERROR);
 199 }