%alltop{
/*
 *  upkg: tool for manipulating Unreal Tournament packages.
 *  Copyright © 2011, 2020 Nick Bowler
 *
 *  This program is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
%}

%{
#include <stdio.h>
#include <stdlib.h>
%}

%h{
#include <uobject/uobject.h>

/* Hack to work around broken type parsing in GOB2. */
typedef unsigned char engine_palette_rgba[4];
%}

class Engine:Palette from U:Object (dynamic)
{
	public unsigned entries = 0;
	public engine_palette_rgba *rgba = NULL destroywith free;

	override (U:Object) int deserialize(U:Object *uo)
	{
		struct upkg_file *f = uo->pkg_file;
		Self *self = SELF(uo);
		unsigned char buf[16];
		size_t rc, buflen;
		long entries;

		PARENT_HANDLER(uo);

		buflen = upkg_export_read(f, buf, sizeof buf);
		rc = upkg_decode_index(&entries, buf, buflen);
		if (rc == 0 || entries < 0)
			return -1;
		self->entries = entries;

		if (upkg_export_seek(f, rc, SEEK_SET) != 0)
			return -1;
		buflen = entries * sizeof self->rgba[0];
		self->rgba = malloc(buflen);
		if (!self->rgba)
			return -1;

		rc = upkg_export_read(f, self->rgba, buflen);
		if (rc != buflen) {
			free(self->rgba);
			return -1;
		}

		return 0;
	}
}