1 /* $OpenBSD: cmd-split-window.c,v 1.90 2018/05/24 09:42:49 nicm Exp $ */ 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:dfF:l:hp:Pt:v", 0, -1 }, 44 .usage = "[-bdfhvP] [-c start-directory] [-F format] " 45 "[-p percentage|-l size] " CMD_TARGET_PANE_USAGE " [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 cmd_find_state *current = &item->shared->current; 57 struct args *args = self->args; 58 struct client *c = cmd_find_client(item, NULL, 1); 59 struct session *s = item->target.s; 60 struct winlink *wl = item->target.wl; 61 struct window *w = wl->window; 62 struct window_pane *wp = item->target.wp, *new_wp = NULL; 63 struct environ *env; 64 const char *cmd, *path, *shell, *template, *tmp; 65 char **argv, *cause, *new_cause, *cp, *cwd; 66 u_int hlimit; 67 int argc, size, percentage, before; 68 enum layout_type type; 69 struct layout_cell *lc; 70 struct environ_entry *envent; 71 struct cmd_find_state fs; 72 73 server_unzoom_window(w); 74 75 if (args->argc == 0) { 76 cmd = options_get_string(s->options, "default-command"); 77 if (cmd != NULL && *cmd != '\0') { 78 argc = 1; 79 argv = (char **)&cmd; 80 } else { 81 argc = 0; 82 argv = NULL; 83 } 84 } else { 85 argc = args->argc; 86 argv = args->argv; 87 } 88 89 if ((tmp = args_get(args, 'c')) != NULL) 90 cwd = format_single(item, tmp, c, s, NULL, NULL); 91 else 92 cwd = xstrdup(server_client_get_cwd(item->client, s)); 93 94 type = LAYOUT_TOPBOTTOM; 95 if (args_has(args, 'h')) 96 type = LAYOUT_LEFTRIGHT; 97 before = args_has(args, 'b'); 98 99 size = -1; 100 if (args_has(args, 'l')) { 101 size = args_strtonum(args, 'l', 0, INT_MAX, &cause); 102 if (cause != NULL) { 103 xasprintf(&new_cause, "size %s", cause); 104 free(cause); 105 cause = new_cause; 106 goto error; 107 } 108 } else if (args_has(args, 'p')) { 109 percentage = args_strtonum(args, 'p', 0, INT_MAX, &cause); 110 if (cause != NULL) { 111 xasprintf(&new_cause, "percentage %s", cause); 112 free(cause); 113 cause = new_cause; 114 goto error; 115 } 116 if (type == LAYOUT_TOPBOTTOM) 117 size = (wp->sy * percentage) / 100; 118 else 119 size = (wp->sx * percentage) / 100; 120 } 121 hlimit = options_get_number(s->options, "history-limit"); 122 123 shell = options_get_string(s->options, "default-shell"); 124 if (*shell == '\0' || areshell(shell)) 125 shell = _PATH_BSHELL; 126 127 lc = layout_split_pane(wp, type, size, before, args_has(args, 'f')); 128 if (lc == NULL) { 129 cause = xstrdup("pane too small"); 130 goto error; 131 } 132 new_wp = window_add_pane(w, wp, before, args_has(args, 'f'), hlimit); 133 layout_make_leaf(lc, new_wp); 134 135 path = NULL; 136 if (item->client != NULL && item->client->session == NULL) 137 envent = environ_find(item->client->environ, "PATH"); 138 else 139 envent = environ_find(s->environ, "PATH"); 140 if (envent != NULL) 141 path = envent->value; 142 143 env = environ_for_session(s, 0); 144 if (window_pane_spawn(new_wp, argc, argv, path, shell, cwd, env, 145 s->tio, &cause) != 0) { 146 environ_free(env); 147 goto error; 148 } 149 environ_free(env); 150 151 layout_fix_panes(w, w->sx, w->sy); 152 server_redraw_window(w); 153 154 if (!args_has(args, 'd')) { 155 window_set_active_pane(w, new_wp); 156 session_select(s, wl->idx); 157 cmd_find_from_session(current, s, 0); 158 server_redraw_session(s); 159 } else 160 server_status_session(s); 161 162 if (args_has(args, 'P')) { 163 if ((template = args_get(args, 'F')) == NULL) 164 template = SPLIT_WINDOW_TEMPLATE; 165 cp = format_single(item, template, c, s, wl, new_wp); 166 cmdq_print(item, "%s", cp); 167 free(cp); 168 } 169 notify_window("window-layout-changed", w); 170 171 cmd_find_from_winlink_pane(&fs, wl, new_wp, 0); 172 hooks_insert(s->hooks, item, &fs, "after-split-window"); 173 174 free(cwd); 175 return (CMD_RETURN_NORMAL); 176 177 error: 178 if (new_wp != NULL) { 179 layout_close_pane(new_wp); 180 window_remove_pane(w, new_wp); 181 } 182 cmdq_error(item, "create pane failed: %s", cause); 183 free(cause); 184 185 free(cwd); 186 return (CMD_RETURN_ERROR); 187 } 188