vfs.h

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// ==========================================================================================================
//
// BREW v2.0+ OPENGLES MICROENGINE
//
// ----------------------------------------
//
// Written by Vander Nunes
//
// ==========================================================================================================

#ifndef __VFS_H__

	#define __VFS_H__

	#include "vfs_defs.h"
	#include "zip/unzip.h"

	#pragma pack (push, 1)

	#define ZIPHeaderSig	0x04034b50
	typedef PACKED struct
	{
		LONG	Signature;		   //  (0x04034b50)
		WORD	Version;
		WORD	Flags;
		WORD	Method;
		LONG	LastMod;
		LONG	CRC32;
		LONG	CompressedSize;
		LONG	UnCompressedSize;
		WORD	FileNameLength;
		WORD	ExtraLength;
	} ZIPHeader;

	#define ZIPCtrlHeaderSig	0x02014b50
	typedef PACKED struct
	{
		LONG	Signature;		   //  (0x02014b50)
		WORD	VersionMade;
		WORD	VersionNeeded;
		WORD	Flags;
		WORD	Method;
		LONG	LastMod;
		LONG	CRC32;
		LONG	CompressedSize;
		LONG	UnCompressedSize;
		WORD	FileNameLength;
		WORD	ExtraLength;
		WORD	CommentLength;
		WORD	StartDisk;
		WORD	IniternalAttribs;
		LONG	ExternalAttribs;
		LONG	Offset;
	} ZIPCtrlHeader;

	#define ZIPEndSig			0x06054b50
	typedef PACKED struct
	{
		LONG	Signature;		   //  (0x06054b50)
		WORD	DiskNumber;
		WORD	StartDiskNumber;
		WORD	FilesOnDisk;
		WORD	Files;
		LONG	Size;
		LONG	Offset;
		WORD	CommentLength;
	} ZIPEnd;

	#pragma pack (pop)

	//
	// Virtual File System class
	//

	class CVfs
	{
		private:

			char*		m_pMemory;
			char*		m_pReadMemory;
			DWORD		m_dwMemorySize;

			CUnzip	m_Zip;

		public:

			CVfs();
			~CVfs();

			// Brew apps must pass pApplet as pApiExtra pointer, Win32 just ommit it
			int		Unpack(char* szPakFile, char *szFile, void* pApiExtra = NULL);
			DWORD	FileSize(void);
			int		Read(void* pBuf, DWORD dwBytes);
			void	SeekTo(DWORD dwBytes);
			void	Finish(void);
	};

#endif