Initial import to CVS. Basic functions are working, albeit with a couple of showstopper memory bugs and many missing features. Detaching, reattaching, creating new sessions, listing sessions work acceptably for using with shells. Simple curses programs (top, systat, tetris) and more complicated ones (mutt, emacs) that don't require scrolling regions (ESC[r) mostly work fine (including mutt, emacs). No status bar yet and no key remapping or other customisation.

session.c

@@ -0,0 +1,189 @@
+/* $Id: session.c,v 1.1.1.1 2007-07-09 19:04:12 nicm Exp $ */
+
+/*
+ * Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
+ * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
+ * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <sys/types.h>
+
+#include <string.h>
+
+#include "tmux.h"
+
+/* Global session list. */
+struct sessions	sessions;	
+
+/* Find session by name. */
+struct session *
+session_find(const char *name)
+{
+	struct session	*s;
+	u_int		 i;
+
+	for (i = 0; i < ARRAY_LENGTH(&sessions); i++) {
+		s = ARRAY_ITEM(&sessions, i);
+		if (s != NULL && strcmp(s->name, name) == 0)
+			return (s);
+	}
+	
+	return (NULL);
+}
+
+/* Create a new session. */
+struct session *
+session_create(const char *name, const char *cmd, u_int sx, u_int sy)
+{
+	struct session	*s;
+	u_int		 i;
+
+	s = xmalloc(sizeof *s);
+	s->tim = time(NULL); 
+	strlcpy(s->name, name, sizeof s->name);
+	ARRAY_INIT(&s->windows);
+
+	if (session_new(s, cmd, sx, sy) != 0) {
+		xfree(s);
+		return (NULL);
+	}
+
+	for (i = 0; i < ARRAY_LENGTH(&sessions); i++) {
+		s = ARRAY_ITEM(&sessions, i);
+		if (s == NULL) {
+			ARRAY_SET(&sessions, i, s);
+			return (s);
+		}
+	}
+	ARRAY_ADD(&sessions, s);
+	return (s);
+}
+
+/* Destroy a session. */
+void
+session_destroy(struct session *s)
+{
+	u_int	i;
+
+	if (session_index(s, &i) != 0)
+		log_fatalx("session not found");
+	ARRAY_REMOVE(&sessions, i);
+
+	while (!ARRAY_EMPTY(&s->windows))
+		window_remove(&s->windows, ARRAY_FIRST(&s->windows));
+
+	xfree(s);
+}
+
+/* Find session index. */
+int
+session_index(struct session *s, u_int *i)
+{
+	for (*i = 0; *i < ARRAY_LENGTH(&sessions); (*i)++) {
+		if (s == ARRAY_ITEM(&sessions, *i))
+			return (0);
+	}
+	return (-1);
+}
+
+/* Create a new window on a session. */
+int
+session_new(struct session *s, const char *cmd, u_int sx, u_int sy)
+{
+	struct window	*w;
+
+	if ((w = window_create(cmd, sx, sy)) == NULL)
+		return (-1);
+	session_attach(s, w);
+
+	s->window = w;
+	return (0);
+}
+
+/* Attach a window to a session. */
+void
+session_attach(struct session *s, struct window *w)
+{
+	window_add(&s->windows, w);
+}
+
+/* Detach a window from a session. */
+int
+session_detach(struct session *s, struct window *w)
+{
+	if (s->window == w) {
+		if (session_next(s) != 0)
+			session_previous(s);
+	}
+
+	window_remove(&s->windows, w);
+	if (ARRAY_EMPTY(&s->windows)) {
+		session_destroy(s);
+		return (1);
+	}
+	return (0);
+}
+
+/* Return if session has window. */
+int
+session_has(struct session *s, struct window *w)
+{
+	u_int	i;
+
+	return (window_index(&s->windows, w, &i) == 0);
+}
+
+/* Move session to next window. */
+int
+session_next(struct session *s)
+{
+	struct window	*w;
+
+	if (s->window == NULL)
+		return (-1);
+
+	w = window_next(&s->windows, s->window);
+	if (w == NULL)
+		return (-1);
+	s->window = w;
+	return (0);
+}
+
+/* Move session to previous window. */ 
+int
+session_previous(struct session *s)
+{
+	struct window	*w;
+
+	if (s->window == NULL)
+		return (-1);
+
+	w = window_previous(&s->windows, s->window);
+	if (w == NULL)
+		return (-1);
+	s->window = w;
+	return (0);
+}
+
+/* Move session to specific window. */ 
+int
+session_select(struct session *s, u_int i)
+{
+	struct window	*w;
+
+	w = window_at(&s->windows, i);
+	if (w == NULL)
+		return (-1);
+	s->window = w;
+	return (0);
+}