has-session command.

CHANGES

@@ -1,3 +1,7 @@
+25 October 2007
+
+* (nicm) has-session command: checks if session exists.
+
 24 October 2007
 
 * (nicm) Support for \e6n to request cursor position. resize(1) now works.
@@ -159,5 +163,5 @@
   (including mutt, emacs). No status bar yet and no key remapping or other
   customisation.
 
-$Id: CHANGES,v 1.50 2007-10-24 15:29:27 nicm Exp $
+$Id: CHANGES,v 1.51 2007-10-25 17:44:24 nicm Exp $
 

Makefile

@@ -1,4 +1,4 @@
-# $Id: Makefile,v 1.30 2007-10-23 09:36:19 nicm Exp $
+# $Id: Makefile,v 1.31 2007-10-25 17:44:24 nicm Exp $
 
 .SUFFIXES: .c .o .y .h
 .PHONY: clean
@@ -23,7 +23,8 @@ SRCS= tmux.c server.c server-msg.c server-fn.c buffer.c buffer-poll.c status.c \
       cmd-unbind-key.c cmd-previous-window.c cmd-last-window.c cmd-list-keys.c \
       cmd-set-option.c cmd-rename-window.c cmd-select-window.c \
       cmd-list-windows.c cmd-attach-session.c cmd-send-prefix.c \
-      cmd-refresh-session.c cmd-kill-window.c cmd-list-clients.c
+      cmd-refresh-session.c cmd-kill-window.c cmd-list-clients.c \
+      cmd-has-session.c
 
 YACC= yacc -d
 

TODO

@@ -43,7 +43,6 @@
   kill-window to limit accidental presses
 - status-fg/status-bg should be to set attributes: bold, etc
 - show-options command
-- fix resize(1)
 - detach client and other client commands. note that there can only be a
   "current client" on key presses - these should act like detach-session -
   -a will do all clients, otherwise do nothing unless key in which case do
@@ -51,6 +50,7 @@
 - check handling of out-of-bound values in input.c, most should be limited
   rather than ignored
 - save/restore (DECSC/DECRC) are ugly. maybe a struct screen_attr and memcpy
+- force maximum terminal size (centred?)
 
 -- For 0.1 --------------------------------------------------------------------
 - man page

cmd-has-session.c

@@ -0,0 +1,51 @@
+/* $Id: cmd-has-session.c,v 1.1 2007-10-25 17:44:24 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 <getopt.h>
+#include <string.h>
+
+#include "tmux.h"
+
+/*
+ * Cause client to exit with 0 if session exists, or 1 if it doesn't. This
+ * is handled in the caller since this doesn't have flag CMD_NOSESSION, so
+ * all that is necessary is to exit.
+ */
+
+void	cmd_has_session_exec(void *, struct cmd_ctx *);
+
+const struct cmd_entry cmd_has_session_entry = {
+	"has-session", "has", "",
+	0,
+	NULL,
+	cmd_has_session_exec,
+	NULL,
+	NULL,
+	NULL
+};
+
+void
+cmd_has_session_exec(unused void *ptr, struct cmd_ctx *ctx)
+{
+	struct client	*c = ctx->client;
+	
+	if (!(ctx->flags & CMD_KEY))
+		server_write_client(c, MSG_EXIT, NULL, 0);
+}

cmd.c

@@ -1,4 +1,4 @@
-/* $Id: cmd.c,v 1.19 2007-10-23 09:36:19 nicm Exp $ */
+/* $Id: cmd.c,v 1.20 2007-10-25 17:44:24 nicm Exp $ */
 
 /*
  * Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
@@ -27,6 +27,7 @@ const struct cmd_entry *cmd_table[] = {
 	&cmd_attach_session_entry,
 	&cmd_bind_key_entry,
 	&cmd_detach_session_entry,
+	&cmd_has_session_entry,
 	&cmd_kill_window_entry,
 	&cmd_last_window_entry,
 	&cmd_list_clients_entry,

examples/nicm-start-tmux.sh

@@ -7,7 +7,7 @@ SESSION=natasha-main
 
 TMUX="tmux -S $SOCKET"
 
-if ! $TMUX -s $SESSION attach 2>/dev/null; then
+if ! $TMUX -s $SESSION has 2>/dev/null; then
     $TMUX new -d -s $SESSION -nyelena 'exec ssh yelena'		# 0
 
     $TMUX set default-command "$SHELL -l"
@@ -27,6 +27,6 @@ if ! $TMUX -s $SESSION attach 2>/dev/null; then
     $TMUX bind ^A send-prefix
 
     $TMUX set bell-action none
-
-    $TMUX -s $SESSION attach
 fi
+
+$TMUX -s $SESSION attach

tmux.h

@@ -1,4 +1,4 @@
-/* $Id: tmux.h,v 1.69 2007-10-24 15:40:59 nicm Exp $ */
+/* $Id: tmux.h,v 1.70 2007-10-25 17:44:24 nicm Exp $ */
 
 /*
  * Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
@@ -531,6 +531,7 @@ char		*cmd_recv_string(struct buffer *);
 extern const struct cmd_entry cmd_attach_session_entry;
 extern const struct cmd_entry cmd_bind_key_entry;
 extern const struct cmd_entry cmd_detach_session_entry;
+extern const struct cmd_entry cmd_has_session_entry;
 extern const struct cmd_entry cmd_kill_window_entry;
 extern const struct cmd_entry cmd_last_window_entry;
 extern const struct cmd_entry cmd_list_clients_entry;