1 /* $OpenBSD: cmd-split-window.c,v 1.79 2017/03/08 13:36:12 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 .tflag = CMD_PANE, 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 args *args = self->args; 57 struct client *c = item->state.c; 58 struct session *s = item->state.tflag.s; 59 struct winlink *wl = item->state.tflag.wl; 60 struct window *w = wl->window; 61 struct window_pane *wp = item->state.tflag.wp, *new_wp = NULL; 62 struct environ *env; 63 const char *cmd, *path, *shell, *template, *cwd, *to_free; 64 char **argv, *cause, *new_cause, *cp; 65 u_int hlimit; 66 int argc, size, percentage; 67 enum layout_type type; 68 struct layout_cell *lc; 69 struct environ_entry *envent; 70 struct cmd_find_state fs; 71 72 server_unzoom_window(w); 73 74 env = environ_create(); 75 environ_copy(global_environ, env); 76 environ_copy(s->environ, env); 77 server_fill_environ(s, env); 78 79 if (args->argc == 0) { 80 cmd = options_get_string(s->options, "default-command"); 81 if (cmd != NULL && *cmd != '\0') { 82 argc = 1; 83 argv = (char **)&cmd; 84 } else { 85 argc = 0; 86 argv = NULL; 87 } 88 } else { 89 argc = args->argc; 90 argv = args->argv; 91 } 92 93 to_free = NULL; 94 if (args_has(args, 'c')) { 95 cwd = args_get(args, 'c'); 96 to_free = cwd = format_single(item, cwd, c, s, NULL, NULL); 97 } else if (item->client != NULL && item->client->session == NULL) 98 cwd = item->client->cwd; 99 else 100 cwd = s->cwd; 101 102 type = LAYOUT_TOPBOTTOM; 103 if (args_has(args, 'h')) 104 type = LAYOUT_LEFTRIGHT; 105 106 size = -1; 107 if (args_has(args, 'l')) { 108 size = args_strtonum(args, 'l', 0, INT_MAX, &cause); 109 if (cause != NULL) { 110 xasprintf(&new_cause, "size %s", cause); 111 free(cause); 112 cause = new_cause; 113 goto error; 114 } 115 } else if (args_has(args, 'p')) { 116 percentage = args_strtonum(args, 'p', 0, INT_MAX, &cause); 117 if (cause != NULL) { 118 xasprintf(&new_cause, "percentage %s", cause); 119 free(cause); 120 cause = new_cause; 121 goto error; 122 } 123 if (type == LAYOUT_TOPBOTTOM) 124 size = (wp->sy * percentage) / 100; 125 else 126 size = (wp->sx * percentage) / 100; 127 } 128 hlimit = options_get_number(s->options, "history-limit"); 129 130 shell = options_get_string(s->options, "default-shell"); 131 if (*shell == '\0' || areshell(shell)) 132 shell = _PATH_BSHELL; 133 134 lc = layout_split_pane(wp, type, size, args_has(args, 'b'), 135 args_has(args, 'f')); 136 if (lc == NULL) { 137 cause = xstrdup("pane too small"); 138 goto error; 139 } 140 new_wp = window_add_pane(w, wp, args_has(args, 'b'), hlimit); 141 layout_assign_pane(lc, new_wp); 142 143 path = NULL; 144 if (item->client != NULL && item->client->session == NULL) 145 envent = environ_find(item->client->environ, "PATH"); 146 else 147 envent = environ_find(s->environ, "PATH"); 148 if (envent != NULL) 149 path = envent->value; 150 151 if (window_pane_spawn(new_wp, argc, argv, path, shell, cwd, env, 152 s->tio, &cause) != 0) 153 goto error; 154 155 server_redraw_window(w); 156 157 if (!args_has(args, 'd')) { 158 window_set_active_pane(w, new_wp); 159 session_select(s, wl->idx); 160 server_redraw_session(s); 161 } else 162 server_status_session(s); 163 164 environ_free(env); 165 166 if (args_has(args, 'P')) { 167 if ((template = args_get(args, 'F')) == NULL) 168 template = SPLIT_WINDOW_TEMPLATE; 169 cp = format_single(item, template, c, s, wl, new_wp); 170 cmdq_print(item, "%s", cp); 171 free(cp); 172 } 173 notify_window("window-layout-changed", w); 174 175 if (to_free != NULL) 176 free((void *)to_free); 177 178 cmd_find_clear_state(&fs, NULL, 0); 179 fs.s = s; 180 fs.wl = wl; 181 fs.w = w; 182 fs.wp = new_wp; 183 cmd_find_log_state(__func__, &fs); 184 hooks_insert(s->hooks, item, &fs, "after-split-window"); 185 186 return (CMD_RETURN_NORMAL); 187 188 error: 189 environ_free(env); 190 if (new_wp != NULL) { 191 layout_close_pane(new_wp); 192 window_remove_pane(w, new_wp); 193 } 194 cmdq_error(item, "create pane failed: %s", cause); 195 free(cause); 196 197 if (to_free != NULL) 198 free((void *)to_free); 199 return (CMD_RETURN_ERROR); 200 } 201