/*
 *  upkg: tool for manipulating Unreal Tournament packages.
 *  Copyright (C) 2009 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 2 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, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#ifndef UPKG_H_
#define UPKG_H_

#include <stddef.h>

#define UPKG_FLAG_ALLOW_DOWNLOAD  0x0001
#define UPKG_FLAG_CLIENT_OPTIONAL 0x0002
#define UPKG_FLAG_SERVER_ONLY     0x0004
#define UPKG_FLAG_BROKEN_LINKS    0x0008
#define UPKG_FLAG_INSECURE        0x0010
#define UPKG_FLAG_REQUIRED        0x8000

#define UPKG_OBJ_FLAG_TRANSACTIONAL   0x00000001
#define UPKG_OBJ_FLAG_UNREACHABLE     0x00000002
#define UPKG_OBJ_FLAG_PUBLIC          0x00000004
#define UPKG_OBJ_FLAG_TAG_IMPORT      0x00000008
#define UPKG_OBJ_FLAG_TAG_EXPORT      0x00000010
#define UPKG_OBJ_FLAG_SOURCE_MODIFIED 0x00000020
#define UPKG_OBJ_FLAG_TAG_GARBAGE     0x00000040
#define UPKG_OBJ_FLAG_NEED_LOAD       0x00000200
#define UPKG_OBJ_FLAG_HIGHLIGHT_NAME  0x00000400

#define UPKG_HDR_MAGIC 0x9e2a83c1
#define UPKG_HDR_SIZE  36

struct upkg {
	unsigned version, license;
	unsigned char guid[16];
	unsigned long flags;

	unsigned long name_count, export_count, import_count;

	struct upkg_private *priv;
};

struct upkg_file {
	const char *name;

	int eof;

	struct upkg *pkg;
	unsigned long base, offset, len;
};

struct upkg *upkg_fopen(const char *path);
int upkg_close(struct upkg *pkg);

const char *upkg_get_name(struct upkg *pkg, unsigned long idx);

long   upkg_export_find(struct upkg *pkg, const char *name);
const char *upkg_export_name(struct upkg *pkg, unsigned long idx);
const char *upkg_export_class(struct upkg *pkg, unsigned long idx,
                              const char **package, const char **group);

struct upkg_file *upkg_export_open(struct upkg *pkg, unsigned long idx);
size_t upkg_export_read(struct upkg_file *f, void *buf, size_t n);
int    upkg_export_seek(struct upkg_file *f, long offset, int whence);
long   upkg_export_tell(struct upkg_file *f);
void   upkg_export_close(struct upkg_file *f);

size_t upkg_decode_index(long *val, unsigned char *bytes, size_t n);

#endif