link-window command to link a window into another session.

CHANGES

@@ -1,5 +1,10 @@
 26 October 2007
 
+* (nicm) link-window command to link an existing window into another session
+  (or another index in the same session). Syntax:
+
+	tmux -s dstname link-window [-i dstidx] srcname srcidx
+
 * (nicm) Redo window data structures. The global array remains, but each per-
   session list is now a RB tree of winlink structures. This disassociates the
   window index from the array size (allowing arbitrary indexes) which still
@@ -170,5 +175,5 @@
   (including mutt, emacs). No status bar yet and no key remapping or other
   customisation.
 
-$Id: CHANGES,v 1.52 2007-10-26 12:29:07 nicm Exp $
+$Id: CHANGES,v 1.53 2007-10-26 13:03:59 nicm Exp $
 

Makefile

@@ -1,4 +1,4 @@
-# $Id: Makefile,v 1.31 2007-10-25 17:44:24 nicm Exp $
+# $Id: Makefile,v 1.32 2007-10-26 13:03:59 nicm Exp $
 
 .SUFFIXES: .c .o .y .h
 .PHONY: clean
@@ -24,7 +24,7 @@ SRCS= tmux.c server.c server-msg.c server-fn.c buffer.c buffer-poll.c status.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-has-session.c
+      cmd-has-session.c cmd-link-window.c
 
 YACC= yacc -d
 

TODO

@@ -55,10 +55,6 @@
 	rename sessions
 	swap windows
 		same as link but swap windows if tgt exists else error
-	link/copy windows
-		tmux -s <tgt sess> link-window -i<tgt idx> <src sess> <src idx>
-			link src win to tgt win (at tgt idx if given and
-			empty else new)
 	unlink window (error if window only linked to one session)
 		tmux -s <sess> unlink-window -i<tgt idx>
 	kill session (not bound by default)

cmd-link-window.c

@@ -0,0 +1,176 @@
+/* $Id: cmd-link-window.c,v 1.1 2007-10-26 13:03:59 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 <stdlib.h>
+
+#include "tmux.h"
+
+/*
+ * Link a window into another session.
+ */
+
+int	cmd_link_window_parse(void **, int, char **, char **);
+void	cmd_link_window_exec(void *, struct cmd_ctx *);
+void	cmd_link_window_send(void *, struct buffer *);
+void	cmd_link_window_recv(void **, struct buffer *);
+void	cmd_link_window_free(void *);
+
+struct cmd_link_window_data {
+	int	 dstidx;
+	int	 srcidx;
+	char	*srcname;
+	int	 flag_detached;
+};
+
+const struct cmd_entry cmd_link_window_entry = {
+	"link-window", "linkw", "[-i index] name index",
+	0,
+	cmd_link_window_parse,
+	cmd_link_window_exec, 
+	cmd_link_window_send,
+	cmd_link_window_recv,
+	cmd_link_window_free
+};
+
+int
+cmd_link_window_parse(void **ptr, int argc, char **argv, char **cause)
+{
+	struct cmd_link_window_data	*data;
+	const char			*errstr;
+	int				 opt;
+
+	*ptr = data = xmalloc(sizeof *data);
+	data->flag_detached = 0;
+	data->dstidx = -1;
+	data->srcidx = -1;
+	data->srcname = NULL;
+
+	while ((opt = getopt(argc, argv, "di:")) != EOF) {
+		switch (opt) {
+		case 'i':
+			data->dstidx = strtonum(optarg, 0, UINT_MAX, &errstr);
+			if (errstr != NULL) {
+				xasprintf(cause, "index %s", errstr);
+				goto error;
+			}
+			break;
+		case 'd':
+			data->flag_detached = 1;
+			break;
+		default:
+			goto usage;
+		}
+	}	
+	argc -= optind;
+	argv += optind;
+	if (argc != 2)
+		goto usage;
+
+	data->srcname = xstrdup(argv[0]);
+	data->srcidx = strtonum(argv[1], 0, UINT_MAX, &errstr);
+	if (errstr != NULL) {
+		xasprintf(cause, "index %s", errstr);
+		goto error;
+	}
+
+	return (0);
+
+usage:
+	usage(cause, "%s %s",
+	    cmd_link_window_entry.name, cmd_link_window_entry.usage);
+
+error:
+	cmd_link_window_free(data);
+	return (-1);
+}
+
+void
+cmd_link_window_exec(void *ptr, struct cmd_ctx *ctx)
+{
+	struct cmd_link_window_data	*data = ptr;
+	struct client			*c = ctx->client;
+	struct session			*dst = ctx->session, *src;
+	struct winlink			*wl;
+
+	if (data == NULL)
+		return;
+	
+	if ((src = session_find(data->srcname)) == NULL) {
+		ctx->error(ctx, "session not found: %s", data->srcname);
+		return;
+	}
+
+	if (data->srcidx < 0)
+		data->srcidx = -1;
+	if (data->srcidx == -1)
+		wl = src->curw;
+	else {
+		wl = winlink_find_by_index(&src->windows, data->srcidx);
+		if (wl == NULL) {
+			ctx->error(ctx, "no window %u", data->srcidx);
+			return;
+		}
+	}
+
+	if (data->dstidx < 0)
+		data->dstidx = -1;
+	if ((wl = session_attach(dst, wl->window, data->dstidx)) == NULL) {
+		ctx->error(ctx, "index in use: %d", data->dstidx);
+		return;
+	}
+
+	if (!data->flag_detached) {
+		session_select(dst, wl->idx);
+		server_redraw_session(dst);
+	}
+
+	if (!(ctx->flags & CMD_KEY))
+		server_write_client(c, MSG_EXIT, NULL, 0);
+}
+
+void
+cmd_link_window_send(void *ptr, struct buffer *b)
+{
+	struct cmd_link_window_data	*data = ptr;
+
+	buffer_write(b, data, sizeof *data);
+	cmd_send_string(b, data->srcname);
+}
+
+void
+cmd_link_window_recv(void **ptr, struct buffer *b)
+{
+	struct cmd_link_window_data	*data;
+
+	*ptr = data = xmalloc(sizeof *data);
+	buffer_read(b, data, sizeof *data);
+	data->srcname = cmd_recv_string(b);
+}
+
+void
+cmd_link_window_free(void *ptr)
+{
+	struct cmd_link_window_data	*data = ptr;
+
+	if (data->srcname != NULL)
+		xfree(data->srcname);
+	xfree(data);
+}

cmd.c

@@ -1,4 +1,4 @@
-/* $Id: cmd.c,v 1.20 2007-10-25 17:44:24 nicm Exp $ */
+/* $Id: cmd.c,v 1.21 2007-10-26 13:03:59 nicm Exp $ */
 
 /*
  * Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
@@ -30,6 +30,7 @@ const struct cmd_entry *cmd_table[] = {
 	&cmd_has_session_entry,
 	&cmd_kill_window_entry,
 	&cmd_last_window_entry,
+	&cmd_link_window_entry,
 	&cmd_list_clients_entry,
 	&cmd_list_keys_entry,
 	&cmd_list_sessions_entry,

tmux.h

@@ -1,4 +1,4 @@
-/* $Id: tmux.h,v 1.71 2007-10-26 12:29:07 nicm Exp $ */
+/* $Id: tmux.h,v 1.72 2007-10-26 13:03:59 nicm Exp $ */
 
 /*
  * Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
@@ -543,6 +543,7 @@ 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_link_window_entry;
 extern const struct cmd_entry cmd_list_clients_entry;
 extern const struct cmd_entry cmd_list_keys_entry;
 extern const struct cmd_entry cmd_list_sessions_entry;