1 /* $OpenBSD: cmd-split-window.c,v 1.54 2014/11/12 22:57:06 nicm Exp $ */ 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 #define SPLIT_WINDOW_TEMPLATE "#{session_name}:#{window_index}.#{pane_index}" 35 36 enum cmd_retval cmd_split_window_exec(struct cmd *, struct cmd_q *); 37 38 const struct cmd_entry cmd_split_window_entry = { 39 "split-window", "splitw", 40 "bc:dF:l:hp:Pt:v", 0, -1, 41 "[-bdhvP] [-c start-directory] [-F format] [-p percentage|-l size] " 42 CMD_TARGET_PANE_USAGE " [command]", 43 0, 44 cmd_split_window_exec 45 }; 46 47 enum cmd_retval 48 cmd_split_window_exec(struct cmd *self, struct cmd_q *cmdq) 49 { 50 struct args *args = self->args; 51 struct session *s; 52 struct winlink *wl; 53 struct window *w; 54 struct window_pane *wp, *new_wp = NULL; 55 struct environ env; 56 const char *cmd, *path, *shell, *template; 57 char **argv, *cause, *new_cause, *cp; 58 u_int hlimit; 59 int argc, size, percentage, cwd, fd = -1; 60 enum layout_type type; 61 struct layout_cell *lc; 62 struct client *c; 63 struct format_tree *ft; 64 struct environ_entry *envent; 65 66 if ((wl = cmd_find_pane(cmdq, args_get(args, 't'), &s, &wp)) == NULL) 67 return (CMD_RETURN_ERROR); 68 w = wl->window; 69 server_unzoom_window(w); 70 71 environ_init(&env); 72 environ_copy(&global_environ, &env); 73 environ_copy(&s->environ, &env); 74 server_fill_environ(s, &env); 75 76 if (args->argc == 0) { 77 cmd = options_get_string(&s->options, "default-command"); 78 if (cmd != NULL && *cmd != '\0') { 79 argc = 1; 80 argv = (char **)&cmd; 81 } else { 82 argc = 0; 83 argv = NULL; 84 } 85 } else { 86 argc = args->argc; 87 argv = args->argv; 88 } 89 90 if (args_has(args, 'c')) { 91 ft = format_create(); 92 if ((c = cmd_find_client(cmdq, NULL, 1)) != NULL) 93 format_client(ft, c); 94 format_session(ft, s); 95 format_winlink(ft, s, s->curw); 96 format_window_pane(ft, s->curw->window->active); 97 cp = format_expand(ft, args_get(args, 'c')); 98 format_free(ft); 99 100 if (cp != NULL && *cp != '\0') { 101 fd = open(cp, O_RDONLY|O_DIRECTORY); 102 free(cp); 103 if (fd == -1) { 104 cmdq_error(cmdq, "bad working directory: %s", 105 strerror(errno)); 106 return (CMD_RETURN_ERROR); 107 } 108 } else if (cp != NULL) 109 free(cp); 110 cwd = fd; 111 } else if (cmdq->client != NULL && cmdq->client->session == NULL) 112 cwd = cmdq->client->cwd; 113 else 114 cwd = s->cwd; 115 116 type = LAYOUT_TOPBOTTOM; 117 if (args_has(args, 'h')) 118 type = LAYOUT_LEFTRIGHT; 119 120 size = -1; 121 if (args_has(args, 'l')) { 122 size = args_strtonum(args, 'l', 0, INT_MAX, &cause); 123 if (cause != NULL) { 124 xasprintf(&new_cause, "size %s", cause); 125 free(cause); 126 cause = new_cause; 127 goto error; 128 } 129 } else if (args_has(args, 'p')) { 130 percentage = args_strtonum(args, 'p', 0, INT_MAX, &cause); 131 if (cause != NULL) { 132 xasprintf(&new_cause, "percentage %s", cause); 133 free(cause); 134 cause = new_cause; 135 goto error; 136 } 137 if (type == LAYOUT_TOPBOTTOM) 138 size = (wp->sy * percentage) / 100; 139 else 140 size = (wp->sx * percentage) / 100; 141 } 142 hlimit = options_get_number(&s->options, "history-limit"); 143 144 shell = options_get_string(&s->options, "default-shell"); 145 if (*shell == '\0' || areshell(shell)) 146 shell = _PATH_BSHELL; 147 148 lc = layout_split_pane(wp, type, size, args_has(args, 'b')); 149 if (lc == NULL) { 150 cause = xstrdup("pane too small"); 151 goto error; 152 } 153 new_wp = window_add_pane(w, hlimit); 154 155 path = NULL; 156 if (cmdq->client != NULL && cmdq->client->session == NULL) 157 envent = environ_find(&cmdq->client->environ, "PATH"); 158 else 159 envent = environ_find(&s->environ, "PATH"); 160 if (envent != NULL) 161 path = envent->value; 162 163 if (window_pane_spawn(new_wp, argc, argv, path, shell, cwd, &env, 164 s->tio, &cause) != 0) 165 goto error; 166 layout_assign_pane(lc, new_wp); 167 168 server_redraw_window(w); 169 170 if (!args_has(args, 'd')) { 171 window_set_active_pane(w, new_wp); 172 session_select(s, wl->idx); 173 server_redraw_session(s); 174 } else 175 server_status_session(s); 176 177 environ_free(&env); 178 179 if (args_has(args, 'P')) { 180 if ((template = args_get(args, 'F')) == NULL) 181 template = SPLIT_WINDOW_TEMPLATE; 182 183 ft = format_create(); 184 if ((c = cmd_find_client(cmdq, NULL, 1)) != NULL) 185 format_client(ft, c); 186 format_session(ft, s); 187 format_winlink(ft, s, wl); 188 format_window_pane(ft, new_wp); 189 190 cp = format_expand(ft, template); 191 cmdq_print(cmdq, "%s", cp); 192 free(cp); 193 194 format_free(ft); 195 } 196 notify_window_layout_changed(w); 197 198 if (fd != -1) 199 close(fd); 200 return (CMD_RETURN_NORMAL); 201 202 error: 203 environ_free(&env); 204 if (new_wp != NULL) 205 window_remove_pane(w, new_wp); 206 cmdq_error(cmdq, "create pane failed: %s", cause); 207 free(cause); 208 if (fd != -1) 209 close(fd); 210 return (CMD_RETURN_ERROR); 211 } 212