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Add a choose-buffer command for easier use of the paste buffer stack.

/* $OpenBSD: cmd-list-buffers.c,v 1.9 2010/06/21 21:44:09 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"

/*
 * List paste buffers.
 */

int	cmd_list_buffers_exec(struct cmd *, struct cmd_ctx *);

const struct cmd_entry cmd_list_buffers_entry = {
	"list-buffers", "lsb",
	CMD_TARGET_SESSION_USAGE,
	0, "",
	cmd_target_init,
	cmd_target_parse,
	cmd_list_buffers_exec,
	cmd_target_free,
	cmd_target_print
};

int
cmd_list_buffers_exec(struct cmd *self, struct cmd_ctx *ctx)
{
	struct cmd_target_data	*data = self->data;
	struct session		*s;
	struct paste_buffer	*pb;
	u_int			 idx;
	char			*tmp;

	if ((s = cmd_find_session(ctx, data->target)) == NULL)
		return (-1);

	idx = 0;
	while ((pb = paste_walk_stack(&s->buffers, &idx)) != NULL) {
		tmp = paste_print(pb, 50);
		ctx->print(ctx,
		    "%u: %zu bytes: \"%s\"", idx - 1, pb->size, tmp);
		xfree(tmp);
	}

	return (0);
}