1 /* $OpenBSD: cmd-split-window.c,v 1.73 2016/10/13 22:48:51 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 *, struct cmd_q *); 37 38 const struct cmd_entry cmd_split_window_entry = { 39 .name = "split-window", 40 .alias = "splitw", 41 42 .args = { "bc:dfF:l:hp:Pt:v", 0, -1 }, 43 .usage = "[-bdfhvP] [-c start-directory] [-F format] " 44 "[-p percentage|-l size] " CMD_TARGET_PANE_USAGE " [command]", 45 46 .tflag = CMD_PANE, 47 48 .flags = 0, 49 .exec = cmd_split_window_exec 50 }; 51 52 static enum cmd_retval 53 cmd_split_window_exec(struct cmd *self, struct cmd_q *cmdq) 54 { 55 struct args *args = self->args; 56 struct session *s = cmdq->state.tflag.s; 57 struct winlink *wl = cmdq->state.tflag.wl; 58 struct window *w = wl->window; 59 struct window_pane *wp = cmdq->state.tflag.wp, *new_wp = NULL; 60 struct environ *env; 61 const char *cmd, *path, *shell, *template, *cwd, *to_free; 62 char **argv, *cause, *new_cause, *cp; 63 u_int hlimit; 64 int argc, size, percentage; 65 enum layout_type type; 66 struct layout_cell *lc; 67 struct format_tree *ft; 68 struct environ_entry *envent; 69 struct cmd_find_state fs; 70 71 server_unzoom_window(w); 72 73 env = environ_create(); 74 environ_copy(global_environ, env); 75 environ_copy(s->environ, env); 76 server_fill_environ(s, env); 77 78 if (args->argc == 0) { 79 cmd = options_get_string(s->options, "default-command"); 80 if (cmd != NULL && *cmd != '\0') { 81 argc = 1; 82 argv = (char **)&cmd; 83 } else { 84 argc = 0; 85 argv = NULL; 86 } 87 } else { 88 argc = args->argc; 89 argv = args->argv; 90 } 91 92 to_free = NULL; 93 if (args_has(args, 'c')) { 94 ft = format_create(cmdq, 0); 95 format_defaults(ft, cmdq->state.c, s, NULL, NULL); 96 to_free = cwd = format_expand(ft, args_get(args, 'c')); 97 format_free(ft); 98 } else if (cmdq->client != NULL && cmdq->client->session == NULL) 99 cwd = cmdq->client->cwd; 100 else 101 cwd = s->cwd; 102 103 type = LAYOUT_TOPBOTTOM; 104 if (args_has(args, 'h')) 105 type = LAYOUT_LEFTRIGHT; 106 107 size = -1; 108 if (args_has(args, 'l')) { 109 size = args_strtonum(args, 'l', 0, INT_MAX, &cause); 110 if (cause != NULL) { 111 xasprintf(&new_cause, "size %s", cause); 112 free(cause); 113 cause = new_cause; 114 goto error; 115 } 116 } else if (args_has(args, 'p')) { 117 percentage = args_strtonum(args, 'p', 0, INT_MAX, &cause); 118 if (cause != NULL) { 119 xasprintf(&new_cause, "percentage %s", cause); 120 free(cause); 121 cause = new_cause; 122 goto error; 123 } 124 if (type == LAYOUT_TOPBOTTOM) 125 size = (wp->sy * percentage) / 100; 126 else 127 size = (wp->sx * percentage) / 100; 128 } 129 hlimit = options_get_number(s->options, "history-limit"); 130 131 shell = options_get_string(s->options, "default-shell"); 132 if (*shell == '\0' || areshell(shell)) 133 shell = _PATH_BSHELL; 134 135 lc = layout_split_pane(wp, type, size, args_has(args, 'b'), 136 args_has(args, 'f')); 137 if (lc == NULL) { 138 cause = xstrdup("pane too small"); 139 goto error; 140 } 141 new_wp = window_add_pane(w, wp, hlimit); 142 layout_assign_pane(lc, new_wp); 143 144 path = NULL; 145 if (cmdq->client != NULL && cmdq->client->session == NULL) 146 envent = environ_find(cmdq->client->environ, "PATH"); 147 else 148 envent = environ_find(s->environ, "PATH"); 149 if (envent != NULL) 150 path = envent->value; 151 152 if (window_pane_spawn(new_wp, argc, argv, path, shell, cwd, env, 153 s->tio, &cause) != 0) 154 goto error; 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(cmdq, 0); 172 format_defaults(ft, cmdq->state.c, s, wl, new_wp); 173 174 cp = format_expand(ft, template); 175 cmdq_print(cmdq, "%s", cp); 176 free(cp); 177 178 format_free(ft); 179 } 180 notify_window_layout_changed(w); 181 182 if (to_free != NULL) 183 free((void *)to_free); 184 185 cmd_find_clear_state(&fs, NULL, 0); 186 fs.s = s; 187 fs.wl = wl; 188 fs.w = w; 189 fs.wp = new_wp; 190 cmd_find_log_state(__func__, &fs); 191 if (hooks_wait(s->hooks, cmdq, &fs, "after-split-window") == 0) 192 return (CMD_RETURN_WAIT); 193 return (CMD_RETURN_NORMAL); 194 195 error: 196 environ_free(env); 197 if (new_wp != NULL) { 198 layout_close_pane(new_wp); 199 window_remove_pane(w, new_wp); 200 } 201 cmdq_error(cmdq, "create pane failed: %s", cause); 202 free(cause); 203 204 if (to_free != NULL) 205 free((void *)to_free); 206 return (CMD_RETURN_ERROR); 207 } 208