Xash3D FWGS engine.
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/*
filesystem.h - engine FS
Copyright (C) 2007 Uncle Mike
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.
*/
#ifndef FILESYSTEM_H
#define FILESYSTEM_H
/*
========================================================================
PAK FILES
The .pak files are just a linear collapse of a directory tree
========================================================================
*/
// header
#define IDPACKV1HEADER (('K'<<24)+('C'<<16)+('A'<<8)+'P') // little-endian "PACK"
#define MAX_FILES_IN_PACK 65536 // pak
typedef struct
{
int ident;
int dirofs;
int dirlen;
} dpackheader_t;
typedef struct
{
char name[56]; // total 64 bytes
int filepos;
int filelen;
} dpackfile_t;
/*
========================================================================
.WAD archive format (WhereAllData - WAD)
List of compressed files, that can be identify only by TYPE_*
<format>
header: dwadinfo_t[dwadinfo_t]
file_1: byte[dwadinfo_t[num]->disksize]
file_2: byte[dwadinfo_t[num]->disksize]
file_3: byte[dwadinfo_t[num]->disksize]
...
file_n: byte[dwadinfo_t[num]->disksize]
infotable dlumpinfo_t[dwadinfo_t->numlumps]
========================================================================
*/
#define WAD3_NAMELEN 16
#define HINT_NAMELEN 5 // e.g. _mask, _norm
#define MAX_FILES_IN_WAD 65535 // real limit as above <2Gb size not a lumpcount
#include "const.h"
typedef struct
{
int ident; // should be WAD3
int numlumps; // num files
int infotableofs; // LUT offset
} dwadinfo_t;
typedef struct
{
int filepos; // file offset in WAD
int disksize; // compressed or uncompressed
int size; // uncompressed
signed char type; // TYP_*
signed char attribs; // file attribs
signed char pad0;
signed char pad1;
char name[WAD3_NAMELEN]; // must be null terminated
} dlumpinfo_t;
#include "custom.h"
/*
========================================================================
.HPK archive format (Hash PAK - HPK)
List of compressed files, that can be identify only by TYPE_*
<format>
header: dwadinfo_t[dwadinfo_t]
file_1: byte[dwadinfo_t[num]->disksize]
file_2: byte[dwadinfo_t[num]->disksize]
file_3: byte[dwadinfo_t[num]->disksize]
...
file_n: byte[dwadinfo_t[num]->disksize]
infotable dlumpinfo_t[dwadinfo_t->numlumps]
========================================================================
*/
#define IDHPAKHEADER (('K'<<24)+('A'<<16)+('P'<<8)+'H') // little-endian "HPAK"
#define IDHPAK_VERSION 1
typedef struct
{
int ident; // should be equal HPAK
int version;
int infotableofs;
} hpak_header_t;
typedef struct
{
resource_t resource;
int filepos;
int disksize;
} hpak_lump_t;
typedef struct
{
int count;
hpak_lump_t *entries; // variable sized.
} hpak_info_t;
#define ZIP_HEADER_LF (('K'<<8)+('P')+(0x03<<16)+(0x04<<24))
#define ZIP_HEADER_SPANNED ((0x08<<24)+(0x07<<16)+('K'<<8)+'P')
#define ZIP_HEADER_CDF ((0x02<<24)+(0x01<<16)+('K'<<8)+'P')
#define ZIP_HEADER_EOCD ((0x06<<24)+(0x05<<16)+('K'<<8)+'P')
#define ZIP_COMPRESSION_NO_COMPRESSION 0
#define ZIP_COMPRESSION_DEFLATED 8
#define ZIP_ZIP64 0xffffffff
#pragma pack( push, 1 )
typedef struct zip_header_s
{
unsigned int signature; // little endian ZIP_HEADER
unsigned short version; // version of pkzip need to unpack
unsigned short flags; // flags (16 bits == 16 flags)
unsigned short compression_flags; // compression flags (bits)
unsigned int dos_date; // file modification time and file modification date
unsigned int crc32; //crc32
unsigned int compressed_size;
unsigned int uncompressed_size;
unsigned short filename_len;
unsigned short extrafield_len;
} zip_header_t;
/*
in zip64 comp and uncompr size == 0xffffffff remeber this
compressed and uncompress filesize stored in extra field
*/
typedef struct zip_header_extra_s
{
unsigned int signature; // ZIP_HEADER_SPANNED
unsigned int crc32;
unsigned int compressed_size;
unsigned int uncompressed_size;
} zip_header_extra_t;
typedef struct zip_cdf_header_s
{
unsigned int signature;
unsigned short version;
unsigned short version_need;
unsigned short generalPurposeBitFlag;
unsigned short flags;
unsigned short modification_time;
unsigned short modification_date;
unsigned int crc32;
unsigned int compressed_size;
unsigned int uncompressed_size;
unsigned short filename_len;
unsigned short extrafield_len;
unsigned short file_commentary_len;
unsigned short disk_start;
unsigned short internal_attr;
unsigned int external_attr;
unsigned int local_header_offset;
} zip_cdf_header_t;
typedef struct zip_header_eocd_s
{
unsigned short disk_number;
unsigned short start_disk_number;
unsigned short number_central_directory_record;
unsigned short total_central_directory_record;
unsigned int size_of_central_directory;
unsigned int central_directory_offset;
unsigned short commentary_len;
} zip_header_eocd_t;
#pragma pack( pop )
#endif//FILESYSTEM_H