Annotation of src/usr.bin/tmux/cmd-new-session.c, Revision 1.20
1.20 ! nicm 1: /* $OpenBSD: cmd-new-session.c,v 1.19 2009/09/16 12:35:04 nicm Exp $ */
1.1 nicm 2:
3: /*
4: * Copyright (c) 2007 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:
1.11 nicm 21: #include <string.h>
22: #include <termios.h>
23:
1.1 nicm 24: #include "tmux.h"
25:
26: /*
27: * Create a new session and attach to the current terminal unless -d is given.
28: */
29:
30: int cmd_new_session_parse(struct cmd *, int, char **, char **);
31: int cmd_new_session_exec(struct cmd *, struct cmd_ctx *);
32: void cmd_new_session_free(struct cmd *);
33: void cmd_new_session_init(struct cmd *, int);
34: size_t cmd_new_session_print(struct cmd *, char *, size_t);
35:
36: struct cmd_new_session_data {
37: char *newname;
38: char *winname;
39: char *cmd;
40: int flag_detached;
41: };
42:
43: const struct cmd_entry cmd_new_session_entry = {
44: "new-session", "new",
45: "[-d] [-n window-name] [-s session-name] [command]",
1.10 nicm 46: CMD_STARTSERVER|CMD_CANTNEST|CMD_SENDENVIRON, 0,
1.1 nicm 47: cmd_new_session_init,
48: cmd_new_session_parse,
49: cmd_new_session_exec,
50: cmd_new_session_free,
51: cmd_new_session_print
52: };
53:
54: void
55: cmd_new_session_init(struct cmd *self, unused int arg)
56: {
57: struct cmd_new_session_data *data;
58:
59: self->data = data = xmalloc(sizeof *data);
60: data->flag_detached = 0;
61: data->newname = NULL;
62: data->winname = NULL;
63: data->cmd = NULL;
64: }
65:
66: int
67: cmd_new_session_parse(struct cmd *self, int argc, char **argv, char **cause)
68: {
69: struct cmd_new_session_data *data;
70: int opt;
71:
1.20 ! nicm 72: self->entry->init(self, KEYC_NONE);
1.1 nicm 73: data = self->data;
74:
75: while ((opt = getopt(argc, argv, "ds:n:")) != -1) {
76: switch (opt) {
77: case 'd':
78: data->flag_detached = 1;
79: break;
80: case 's':
81: if (data->newname == NULL)
82: data->newname = xstrdup(optarg);
83: break;
84: case 'n':
85: if (data->winname == NULL)
86: data->winname = xstrdup(optarg);
87: break;
88: default:
89: goto usage;
90: }
91: }
92: argc -= optind;
93: argv += optind;
94: if (argc != 0 && argc != 1)
95: goto usage;
96:
97: if (argc == 1)
98: data->cmd = xstrdup(argv[0]);
99:
100: return (0);
101:
102: usage:
103: xasprintf(cause, "usage: %s %s", self->entry->name, self->entry->usage);
104:
105: self->entry->free(self);
106: return (-1);
107: }
108:
109: int
110: cmd_new_session_exec(struct cmd *self, struct cmd_ctx *ctx)
111: {
112: struct cmd_new_session_data *data = self->data;
113: struct session *s;
1.16 nicm 114: struct window *w;
1.10 nicm 115: struct environ env;
1.19 nicm 116: struct termios tio, *tiop;
1.10 nicm 117: const char *update;
1.9 nicm 118: char *overrides, *cmd, *cwd, *cause;
1.13 nicm 119: int detached, idx;
1.1 nicm 120: u_int sx, sy;
121:
1.4 nicm 122: if (data->newname != NULL && session_find(data->newname) != NULL) {
123: ctx->error(ctx, "duplicate session: %s", data->newname);
124: return (-1);
125: }
1.1 nicm 126:
1.4 nicm 127: /*
1.6 nicm 128: * There are three cases:
1.4 nicm 129: *
130: * 1. If cmdclient is non-NULL, new-session has been called from the
131: * command-line - cmdclient is to become a new attached, interactive
132: * client. Unless -d is given, the terminal must be opened and then
133: * the client sent MSG_READY.
134: *
135: * 2. If cmdclient is NULL, new-session has been called from an
136: * existing client (such as a key binding).
137: *
1.6 nicm 138: * 3. Both are NULL, the command was in the configuration file. Treat
139: * this as if -d was given even if it was not.
140: *
141: * In all cases, a new additional session needs to be created and
1.4 nicm 142: * (unless -d) set as the current session for the client.
143: */
144:
1.6 nicm 145: /* Set -d if no client. */
146: detached = data->flag_detached;
147: if (ctx->cmdclient == NULL && ctx->curclient == NULL)
148: detached = 1;
149:
1.15 nicm 150: /*
1.19 nicm 151: * Save the termios settings, part of which is used for new windows in
152: * this session.
1.15 nicm 153: *
154: * This is read again with tcgetattr() rather than using tty.tio as if
155: * detached, tty_open won't be called. Because of this, it must be done
156: * before opening the terminal as that calls tcsetattr() to prepare for
157: * tmux taking over.
158: */
159: if (ctx->cmdclient != NULL && ctx->cmdclient->tty.fd != -1) {
160: if (tcgetattr(ctx->cmdclient->tty.fd, &tio) != 0)
161: fatal("tcgetattr failed");
1.19 nicm 162: tiop = &tio;
1.15 nicm 163: } else
1.19 nicm 164: tiop = NULL;
1.15 nicm 165:
1.4 nicm 166: /* Open the terminal if necessary. */
1.6 nicm 167: if (!detached && ctx->cmdclient != NULL) {
1.4 nicm 168: if (!(ctx->cmdclient->flags & CLIENT_TERMINAL)) {
169: ctx->error(ctx, "not a terminal");
1.1 nicm 170: return (-1);
171: }
1.4 nicm 172:
1.9 nicm 173: overrides =
174: options_get_string(&global_s_options, "terminal-overrides");
175: if (tty_open(&ctx->cmdclient->tty, overrides, &cause) != 0) {
1.4 nicm 176: ctx->error(ctx, "open terminal failed: %s", cause);
177: xfree(cause);
1.1 nicm 178: return (-1);
179: }
180: }
181:
1.16 nicm 182: /* Get the new session working directory. */
183: if (ctx->cmdclient != NULL && ctx->cmdclient->cwd != NULL)
184: cwd = ctx->cmdclient->cwd;
185: else
186: cwd = options_get_string(&global_s_options, "default-path");
187:
188: /* Find new session size. */
1.6 nicm 189: if (detached) {
1.4 nicm 190: sx = 80;
1.18 nicm 191: sy = 24;
1.16 nicm 192: } else if (ctx->cmdclient != NULL) {
193: sx = ctx->cmdclient->tty.sx;
194: sy = ctx->cmdclient->tty.sy;
1.4 nicm 195: } else {
1.16 nicm 196: sx = ctx->curclient->tty.sx;
197: sy = ctx->curclient->tty.sy;
1.1 nicm 198: }
1.7 nicm 199: if (sy > 0 && options_get_number(&global_s_options, "status"))
1.4 nicm 200: sy--;
201: if (sx == 0)
202: sx = 1;
203: if (sy == 0)
204: sy = 1;
1.16 nicm 205:
206: /* Figure out the command for the new window. */
1.4 nicm 207: if (data->cmd != NULL)
208: cmd = data->cmd;
1.1 nicm 209: else
1.7 nicm 210: cmd = options_get_string(&global_s_options, "default-command");
1.1 nicm 211:
1.10 nicm 212: /* Construct the environment. */
213: environ_init(&env);
214: update = options_get_string(&global_s_options, "update-environment");
215: if (ctx->cmdclient != NULL)
216: environ_update(update, &ctx->cmdclient->environ, &env);
1.11 nicm 217:
1.4 nicm 218: /* Create the new session. */
1.13 nicm 219: idx = -1 - options_get_number(&global_s_options, "base-index");
220: s = session_create(
1.19 nicm 221: data->newname, cmd, cwd, &env, tiop, idx, sx, sy, &cause);
1.1 nicm 222: if (s == NULL) {
223: ctx->error(ctx, "create session failed: %s", cause);
224: xfree(cause);
225: return (-1);
226: }
1.10 nicm 227: environ_free(&env);
1.4 nicm 228:
1.16 nicm 229: /* Set the initial window name if one given. */
1.1 nicm 230: if (data->winname != NULL) {
1.16 nicm 231: w = s->curw->window;
232:
233: xfree(w->name);
234: w->name = xstrdup(data->winname);
235:
236: options_set_number(&w->options, "automatic-rename", 0);
1.1 nicm 237: }
238:
1.16 nicm 239: /*
240: * Set the client to the new session. If a command client exists, it is
241: * taking this session and needs to get MSG_READY and stay around.
1.4 nicm 242: */
1.6 nicm 243: if (!detached) {
1.4 nicm 244: if (ctx->cmdclient != NULL) {
1.16 nicm 245: server_write_client(ctx->cmdclient, MSG_READY, NULL, 0);
1.4 nicm 246: ctx->cmdclient->session = s;
247: server_redraw_client(ctx->cmdclient);
248: } else {
249: ctx->curclient->session = s;
250: server_redraw_client(ctx->curclient);
251: }
1.1 nicm 252: }
253: recalculate_sizes();
254:
1.12 nicm 255: return (!detached); /* 1 means don't tell command client to exit */
1.1 nicm 256: }
257:
258: void
259: cmd_new_session_free(struct cmd *self)
260: {
261: struct cmd_new_session_data *data = self->data;
262:
263: if (data->newname != NULL)
264: xfree(data->newname);
265: if (data->winname != NULL)
266: xfree(data->winname);
267: if (data->cmd != NULL)
268: xfree(data->cmd);
269: xfree(data);
270: }
271:
272: size_t
273: cmd_new_session_print(struct cmd *self, char *buf, size_t len)
274: {
275: struct cmd_new_session_data *data = self->data;
276: size_t off = 0;
277:
278: off += xsnprintf(buf, len, "%s", self->entry->name);
279: if (data == NULL)
280: return (off);
281: if (off < len && data->flag_detached)
282: off += xsnprintf(buf + off, len - off, " -d");
283: if (off < len && data->newname != NULL)
284: off += cmd_prarg(buf + off, len - off, " -s ", data->newname);
285: if (off < len && data->winname != NULL)
286: off += cmd_prarg(buf + off, len - off, " -n ", data->winname);
287: if (off < len && data->cmd != NULL)
288: off += cmd_prarg(buf + off, len - off, " ", data->cmd);
289: return (off);
290: }
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