1 /* $OpenBSD: cmd-split-window.c,v 1.82 2017/04/22 08:56:24 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 cmd_find_state *current = &item->shared->current; 57 struct args *args = self->args; 58 struct client *c = item->state.c; 59 struct session *s = item->state.tflag.s; 60 struct winlink *wl = item->state.tflag.wl; 61 struct window *w = wl->window; 62 struct window_pane *wp = item->state.tflag.wp, *new_wp = NULL; 63 struct environ *env; 64 const char *cmd, *path, *shell, *template, *cwd, *to_free; 65 char **argv, *cause, *new_cause, *cp; 66 u_int hlimit; 67 int argc, size, percentage; 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 to_free = NULL; 90 if (args_has(args, 'c')) { 91 cwd = args_get(args, 'c'); 92 to_free = cwd = format_single(item, cwd, c, s, NULL, NULL); 93 } else if (item->client != NULL && item->client->session == NULL) 94 cwd = item->client->cwd; 95 else 96 cwd = s->cwd; 97 98 type = LAYOUT_TOPBOTTOM; 99 if (args_has(args, 'h')) 100 type = LAYOUT_LEFTRIGHT; 101 102 size = -1; 103 if (args_has(args, 'l')) { 104 size = args_strtonum(args, 'l', 0, INT_MAX, &cause); 105 if (cause != NULL) { 106 xasprintf(&new_cause, "size %s", cause); 107 free(cause); 108 cause = new_cause; 109 goto error; 110 } 111 } else if (args_has(args, 'p')) { 112 percentage = args_strtonum(args, 'p', 0, INT_MAX, &cause); 113 if (cause != NULL) { 114 xasprintf(&new_cause, "percentage %s", cause); 115 free(cause); 116 cause = new_cause; 117 goto error; 118 } 119 if (type == LAYOUT_TOPBOTTOM) 120 size = (wp->sy * percentage) / 100; 121 else 122 size = (wp->sx * percentage) / 100; 123 } 124 hlimit = options_get_number(s->options, "history-limit"); 125 126 shell = options_get_string(s->options, "default-shell"); 127 if (*shell == '\0' || areshell(shell)) 128 shell = _PATH_BSHELL; 129 130 lc = layout_split_pane(wp, type, size, args_has(args, 'b'), 131 args_has(args, 'f')); 132 if (lc == NULL) { 133 cause = xstrdup("pane too small"); 134 goto error; 135 } 136 new_wp = window_add_pane(w, wp, args_has(args, 'b'), hlimit); 137 layout_assign_pane(lc, new_wp); 138 139 path = NULL; 140 if (item->client != NULL && item->client->session == NULL) 141 envent = environ_find(item->client->environ, "PATH"); 142 else 143 envent = environ_find(s->environ, "PATH"); 144 if (envent != NULL) 145 path = envent->value; 146 147 env = environ_for_session(s); 148 if (window_pane_spawn(new_wp, argc, argv, path, shell, cwd, env, 149 s->tio, &cause) != 0) { 150 environ_free(env); 151 goto error; 152 } 153 environ_free(env); 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 cmd_find_from_session(current, s); 161 server_redraw_session(s); 162 } else 163 server_status_session(s); 164 165 if (args_has(args, 'P')) { 166 if ((template = args_get(args, 'F')) == NULL) 167 template = SPLIT_WINDOW_TEMPLATE; 168 cp = format_single(item, template, c, s, wl, new_wp); 169 cmdq_print(item, "%s", cp); 170 free(cp); 171 } 172 notify_window("window-layout-changed", w); 173 174 if (to_free != NULL) 175 free((void *)to_free); 176 177 cmd_find_from_winlink_pane(&fs, wl, new_wp); 178 hooks_insert(s->hooks, item, &fs, "after-split-window"); 179 180 return (CMD_RETURN_NORMAL); 181 182 error: 183 if (new_wp != NULL) { 184 layout_close_pane(new_wp); 185 window_remove_pane(w, new_wp); 186 } 187 cmdq_error(item, "create pane failed: %s", cause); 188 free(cause); 189 190 if (to_free != NULL) 191 free((void *)to_free); 192 return (CMD_RETURN_ERROR); 193 } 194