1 /* $OpenBSD: cmd-split-window.c,v 1.57 2015/04/26 20:25:20 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 format_tree *ft; 63 struct environ_entry *envent; 64 65 if ((wl = cmd_find_pane(cmdq, args_get(args, 't'), &s, &wp)) == NULL) 66 return (CMD_RETURN_ERROR); 67 w = wl->window; 68 server_unzoom_window(w); 69 70 environ_init(&env); 71 environ_copy(&global_environ, &env); 72 environ_copy(&s->environ, &env); 73 server_fill_environ(s, &env); 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 (args_has(args, 'c')) { 90 ft = format_create(); 91 format_defaults(ft, cmd_find_client(cmdq, NULL, 1), s, NULL, 92 NULL); 93 cp = format_expand(ft, args_get(args, 'c')); 94 format_free(ft); 95 96 if (cp != NULL && *cp != '\0') { 97 fd = open(cp, O_RDONLY|O_DIRECTORY); 98 free(cp); 99 if (fd == -1) { 100 cmdq_error(cmdq, "bad working directory: %s", 101 strerror(errno)); 102 return (CMD_RETURN_ERROR); 103 } 104 } else if (cp != NULL) 105 free(cp); 106 cwd = fd; 107 } else if (cmdq->client != NULL && cmdq->client->session == NULL) 108 cwd = cmdq->client->cwd; 109 else 110 cwd = s->cwd; 111 112 type = LAYOUT_TOPBOTTOM; 113 if (args_has(args, 'h')) 114 type = LAYOUT_LEFTRIGHT; 115 116 size = -1; 117 if (args_has(args, 'l')) { 118 size = args_strtonum(args, 'l', 0, INT_MAX, &cause); 119 if (cause != NULL) { 120 xasprintf(&new_cause, "size %s", cause); 121 free(cause); 122 cause = new_cause; 123 goto error; 124 } 125 } else if (args_has(args, 'p')) { 126 percentage = args_strtonum(args, 'p', 0, INT_MAX, &cause); 127 if (cause != NULL) { 128 xasprintf(&new_cause, "percentage %s", cause); 129 free(cause); 130 cause = new_cause; 131 goto error; 132 } 133 if (type == LAYOUT_TOPBOTTOM) 134 size = (wp->sy * percentage) / 100; 135 else 136 size = (wp->sx * percentage) / 100; 137 } 138 hlimit = options_get_number(&s->options, "history-limit"); 139 140 shell = options_get_string(&s->options, "default-shell"); 141 if (*shell == '\0' || areshell(shell)) 142 shell = _PATH_BSHELL; 143 144 lc = layout_split_pane(wp, type, size, args_has(args, 'b')); 145 if (lc == NULL) { 146 cause = xstrdup("pane too small"); 147 goto error; 148 } 149 new_wp = window_add_pane(w, hlimit); 150 layout_assign_pane(lc, new_wp); 151 152 path = NULL; 153 if (cmdq->client != NULL && cmdq->client->session == NULL) 154 envent = environ_find(&cmdq->client->environ, "PATH"); 155 else 156 envent = environ_find(&s->environ, "PATH"); 157 if (envent != NULL) 158 path = envent->value; 159 160 if (window_pane_spawn(new_wp, argc, argv, path, shell, cwd, &env, 161 s->tio, &cause) != 0) 162 goto error; 163 164 server_redraw_window(w); 165 166 if (!args_has(args, 'd')) { 167 window_set_active_pane(w, new_wp); 168 session_select(s, wl->idx); 169 server_redraw_session(s); 170 } else 171 server_status_session(s); 172 173 environ_free(&env); 174 175 if (args_has(args, 'P')) { 176 if ((template = args_get(args, 'F')) == NULL) 177 template = SPLIT_WINDOW_TEMPLATE; 178 179 ft = format_create(); 180 format_defaults(ft, cmd_find_client(cmdq, NULL, 1), s, wl, 181 new_wp); 182 183 cp = format_expand(ft, template); 184 cmdq_print(cmdq, "%s", cp); 185 free(cp); 186 187 format_free(ft); 188 } 189 notify_window_layout_changed(w); 190 191 if (fd != -1) 192 close(fd); 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 if (fd != -1) 204 close(fd); 205 return (CMD_RETURN_ERROR); 206 } 207