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![Nicholas Marriott](/assets/img/avatar_default.png)
- find by name if given - otherwise try current index from $TMUX - otherwise if only one session, use it - otherwise error
238 lines
4.8 KiB
C
238 lines
4.8 KiB
C
/* $Id: session.c,v 1.17 2007-09-27 09:52:03 nicm Exp $ */
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/*
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* Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
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* IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
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* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <sys/types.h>
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#include <string.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include "tmux.h"
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/* Global session list. */
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struct sessions sessions;
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/* Find session by name. */
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struct session *
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session_find(const char *name)
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{
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struct session *s;
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u_int i;
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for (i = 0; i < ARRAY_LENGTH(&sessions); i++) {
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s = ARRAY_ITEM(&sessions, i);
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if (s != NULL && strcmp(s->name, name) == 0)
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return (s);
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}
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return (NULL);
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}
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/* Create a new session. */
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struct session *
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session_create(const char *name, const char *cmd, u_int sx, u_int sy)
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{
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struct session *s;
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u_int i;
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s = xmalloc(sizeof *s);
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s->tim = time(NULL);
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s->window = s->last = NULL;
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ARRAY_INIT(&s->windows);
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for (i = 0; i < ARRAY_LENGTH(&sessions); i++) {
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if (ARRAY_ITEM(&sessions, i) == NULL) {
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ARRAY_SET(&sessions, i, s);
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break;
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}
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}
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if (i == ARRAY_LENGTH(&sessions))
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ARRAY_ADD(&sessions, s);
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if (*name != '\0')
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strlcpy(s->name, name, sizeof s->name);
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else
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xsnprintf(s->name, sizeof s->name, "%u", i);
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if (session_new(s, cmd, sx, sy) != 0) {
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session_destroy(s);
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return (NULL);
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}
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return (s);
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}
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/* Destroy a session. */
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void
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session_destroy(struct session *s)
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{
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u_int i;
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if (session_index(s, &i) != 0)
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fatalx("session not found");
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ARRAY_SET(&sessions, i, NULL);
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while (!ARRAY_EMPTY(&sessions) && ARRAY_LAST(&sessions) == NULL)
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ARRAY_TRUNC(&sessions, 1);
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while (!ARRAY_EMPTY(&s->windows))
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window_remove(&s->windows, ARRAY_FIRST(&s->windows));
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xfree(s);
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}
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/* Find session index. */
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int
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session_index(struct session *s, u_int *i)
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{
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for (*i = 0; *i < ARRAY_LENGTH(&sessions); (*i)++) {
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if (s == ARRAY_ITEM(&sessions, *i))
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return (0);
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}
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return (-1);
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}
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/* Create a new window on a session. */
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int
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session_new(struct session *s, const char *cmd, u_int sx, u_int sy)
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{
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struct window *w;
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const char *environ[] = { NULL, "TERM=screen", NULL };
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char buf[256];
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u_int i;
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if (session_index(s, &i) != 0)
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fatalx("session not found");
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xsnprintf(buf, sizeof buf, "TMUX=%ld,%u", (long) getpid(), i);
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environ[0] = buf;
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if ((w = window_create(cmd, environ, sx, sy)) == NULL)
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return (-1);
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session_attach(s, w);
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s->last = s->window;
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s->window = w;
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return (0);
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}
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/* Attach a window to a session. */
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void
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session_attach(struct session *s, struct window *w)
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{
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window_add(&s->windows, w);
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}
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/* Detach a window from a session. */
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int
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session_detach(struct session *s, struct window *w)
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{
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if (s->window == w && session_last(s) != 0 && session_previous(s) != 0)
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session_next(s);
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if (s->last == w)
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s->last = NULL;
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window_remove(&s->windows, w);
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if (ARRAY_EMPTY(&s->windows)) {
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session_destroy(s);
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return (1);
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}
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return (0);
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}
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/* Return if session has window. */
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int
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session_has(struct session *s, struct window *w)
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{
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u_int i;
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return (window_index(&s->windows, w, &i) == 0);
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}
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/* Move session to next window. */
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int
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session_next(struct session *s)
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{
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struct window *w;
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u_int n;
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if (s->window == NULL)
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return (-1);
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w = window_next(&s->windows, s->window);
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if (w == NULL) {
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n = 0;
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while ((w = ARRAY_ITEM(&s->windows, n)) == NULL)
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n++;
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if (w == s->window)
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return (1);
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}
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s->last = s->window;
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s->window = w;
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return (0);
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}
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/* Move session to previous window. */
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int
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session_previous(struct session *s)
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{
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struct window *w;
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if (s->window == NULL)
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return (-1);
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w = window_previous(&s->windows, s->window);
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if (w == NULL) {
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w = ARRAY_LAST(&s->windows);
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if (w == s->window)
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return (1);
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}
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s->last = s->window;
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s->window = w;
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return (0);
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}
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/* Move session to specific window. */
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int
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session_select(struct session *s, u_int i)
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{
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struct window *w;
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w = window_at(&s->windows, i);
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if (w == NULL)
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return (-1);
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s->last = s->window;
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s->window = w;
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return (0);
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}
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/* Move session to last used window. */
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int
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session_last(struct session *s)
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{
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struct window *w;
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w = s->last;
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if (w == NULL)
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return (-1);
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if (w == s->window)
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return (1);
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s->last = s->window;
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s->window = w;
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return (0);
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}
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