Import tmux, a terminal multiplexor allowing (among other things) a single

terminal to be switched between several different windows and programs
displayed on one terminal be detached from one terminal and moved to another.

ok deraadt pirofti

1 files changed, 285 insertions, 0 deletions

diff --git a/cmd-swap-pane.c b/cmd-swap-pane.c
new file mode 100644
index 00000000..0a34d14d
--- /dev/null
+++ b/cmd-swap-pane.c
@@ -0,0 +1,285 @@
+/* $OpenBSD$ */
+
+/*
+ * Copyright (c) 2009 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 <stdlib.h>
+
+#include "tmux.h"
+
+/*
+ * Swap two panes.
+ */
+
+int	cmd_swap_pane_parse(struct cmd *, int, char **, char **);
+int	cmd_swap_pane_exec(struct cmd *, struct cmd_ctx *);
+void	cmd_swap_pane_send(struct cmd *, struct buffer *);
+void	cmd_swap_pane_recv(struct cmd *, struct buffer *);
+void	cmd_swap_pane_free(struct cmd *);
+void	cmd_swap_pane_init(struct cmd *, int);
+size_t	cmd_swap_pane_print(struct cmd *, char *, size_t);
+
+struct cmd_swap_pane_data {
+	char	*target;
+        int	 src;
+	int	 dst;
+	int	 flag_detached;
+	int	 flag_up;
+	int	 flag_down;
+};
+
+const struct cmd_entry cmd_swap_pane_entry = {
+	"swap-pane", "swapp",
+	"[-dDU] [-t target-window] [-p src-index] [-q dst-index]",
+	0,
+	cmd_swap_pane_init,
+	cmd_swap_pane_parse,
+	cmd_swap_pane_exec,
+	cmd_swap_pane_send,
+	cmd_swap_pane_recv,
+	cmd_swap_pane_free,
+	cmd_swap_pane_print
+};
+
+void
+cmd_swap_pane_init(struct cmd *self, int key)
+{
+	struct cmd_swap_pane_data	 *data;
+
+	self->data = data = xmalloc(sizeof *data);
+	data->target = NULL;
+	data->src = -1;
+	data->dst = -1;
+	data->flag_detached = 0;
+	data->flag_up = 0;
+	data->flag_down = 0;
+
+	switch (key) {
+	case '{':
+		data->flag_up = 1;
+		break;
+	case '}':
+		data->flag_down = 1;
+		break;
+	}
+}
+
+int
+cmd_swap_pane_parse(struct cmd *self, int argc, char **argv, char **cause)
+{
+	struct cmd_swap_pane_data	*data;
+	int				 opt, n;
+	const char			*errstr;
+
+	self->entry->init(self, 0);
+	data = self->data;
+
+	while ((opt = getopt(argc, argv, "dDt:p:q:U")) != -1) {
+		switch (opt) {
+		case 'd':
+			data->flag_detached = 1;
+			break;
+		case 'D':
+			data->flag_up = 0;
+			data->flag_down = 1;
+			data->dst = -1;
+			break;
+		case 't':
+			if (data->target == NULL)
+				data->target = xstrdup(optarg);
+			break;
+		case 'p':
+			if (data->src == -1) {
+				n = strtonum(optarg, 0, INT_MAX, &errstr);
+				if (errstr != NULL) {
+					xasprintf(cause, "src %s", errstr);
+					goto error;
+				}
+				data->src = n;
+			}
+			break;
+		case 'q':
+			if (data->dst == -1) {
+				n = strtonum(optarg, 0, INT_MAX, &errstr);
+				if (errstr != NULL) {
+					xasprintf(cause, "dst %s", errstr);
+					goto error;
+				}
+				data->dst = n;
+			}
+			data->flag_up = 0;
+			data->flag_down = 0;
+			break;
+		case 'U':
+			data->flag_up = 1;
+			data->flag_down = 0;
+			data->dst = -1;
+			break;
+
+		default:
+			goto usage;
+		}
+	}
+	argc -= optind;
+	argv += optind;
+	if (argc != 0)
+		goto usage;
+
+	return (0);
+
+usage:
+	xasprintf(cause, "usage: %s %s", self->entry->name, self->entry->usage);
+
+error:
+	self->entry->free(self);
+	return (-1);
+}
+
+int
+cmd_swap_pane_exec(struct cmd *self, struct cmd_ctx *ctx)
+{
+	struct cmd_swap_pane_data	*data = self->data;
+	struct winlink			*wl;
+	struct window			*w;
+	struct window_pane		*tmp_wp, *src_wp, *dst_wp;
+	u_int				 xx, yy;
+
+	if (data == NULL)
+		return (0);
+
+	if ((wl = cmd_find_window(ctx, data->target, NULL)) == NULL)
+		return (-1);
+	w = wl->window;
+
+	if (data->src == -1)
+		src_wp = w->active;
+	else {
+		src_wp = window_pane_at_index(w, data->src);
+		if (src_wp == NULL) {
+			ctx->error(ctx, "no pane: %d", data->src);
+			return (-1);
+		}
+	}
+	if (data->dst == -1)
+		dst_wp = w->active;
+	else {
+		dst_wp = window_pane_at_index(w, data->dst);
+		if (dst_wp == NULL) {
+			ctx->error(ctx, "no pane: %d", data->dst);
+			return (-1);
+		}
+	}
+
+	if (data->dst == -1 && data->flag_up) {
+		if ((dst_wp = TAILQ_PREV(src_wp, window_panes, entry)) == NULL)
+			dst_wp = TAILQ_LAST(&w->panes, window_panes);
+	}
+	if (data->dst == -1 && data->flag_down) {
+		if ((dst_wp = TAILQ_NEXT(src_wp, entry)) == NULL)
+			dst_wp = TAILQ_FIRST(&w->panes);
+	}
+
+	if (src_wp == dst_wp)
+		return (0);
+
+	tmp_wp = TAILQ_PREV(dst_wp, window_panes, entry);
+	TAILQ_REMOVE(&w->panes, dst_wp, entry);
+	TAILQ_REPLACE(&w->panes, src_wp, dst_wp, entry);
+	if (tmp_wp == src_wp)
+		tmp_wp = dst_wp;
+	if (tmp_wp == NULL)
+		TAILQ_INSERT_HEAD(&w->panes, src_wp, entry);
+	else
+		TAILQ_INSERT_AFTER(&w->panes, tmp_wp, src_wp, entry);
+
+	xx = src_wp->xoff;
+	yy = src_wp->yoff;
+ 	src_wp->xoff = dst_wp->xoff;
+ 	src_wp->yoff = dst_wp->yoff;
+ 	dst_wp->xoff = xx;
+ 	dst_wp->yoff = yy;
+
+	xx = src_wp->sx;
+	yy = src_wp->sy;
+	window_pane_resize(src_wp, dst_wp->sx, dst_wp->sy);
+	window_pane_resize(dst_wp, xx, yy);
+
+	if (!data->flag_detached) {
+		window_set_active_pane(w, dst_wp);
+		layout_refresh(w, 0);
+	}
+
+	return (0);
+}
+
+void
+cmd_swap_pane_send(struct cmd *self, struct buffer *b)
+{
+	struct cmd_swap_pane_data	*data = self->data;
+
+	buffer_write(b, data, sizeof *data);
+	cmd_send_string(b, data->target);
+}
+
+void
+cmd_swap_pane_recv(struct cmd *self, struct buffer *b)
+{
+	struct cmd_swap_pane_data	*data;
+
+	self->data = data = xmalloc(sizeof *data);
+	buffer_read(b, data, sizeof *data);
+	data->target = cmd_recv_string(b);
+}
+
+void
+cmd_swap_pane_free(struct cmd *self)
+{
+	struct cmd_swap_pane_data	*data = self->data;
+
+	if (data->target != NULL)
+		xfree(data->target);
+	xfree(data);
+}
+
+size_t
+cmd_swap_pane_print(struct cmd *self, char *buf, size_t len)
+{
+	struct cmd_swap_pane_data	*data = self->data;
+	size_t				 off = 0;
+
+	off += xsnprintf(buf, len, "%s", self->entry->name);
+	if (data == NULL)
+		return (off);
+	if (off < len &&
+	    (data->flag_down || data->flag_up || data->flag_detached)) {
+		off += xsnprintf(buf + off, len - off, " -");
+		if (off < len && data->flag_detached)
+			off += xsnprintf(buf + off, len - off, "d");
+		if (off < len && data->flag_up)
+			off += xsnprintf(buf + off, len - off, "D");
+		if (off < len && data->flag_down)
+			off += xsnprintf(buf + off, len - off, "U");
+	}
+	if (off < len && data->target != NULL)
+		off += cmd_prarg(buf + off, len - off, " -t ", data->target);
+	if (off < len && data->src != -1)
+		off += xsnprintf(buf + off, len - off, " -p %d", data->src);
+	if (off < len && data->dst != -1)
+		off += xsnprintf(buf + off, len - off, " -q %d", data->dst);
+	return (off);
+}