60 lines
1.7 KiB
C++
Executable File
60 lines
1.7 KiB
C++
Executable File
///////////////////////////////////////////////////////////////////////////////
|
|
//
|
|
// Name: FileUnpacker.h
|
|
// Author: Rich Cross
|
|
// Contact: rich@wildfiregames.com
|
|
//
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
|
|
#ifndef _FILEUNPACKER_H
|
|
#define _FILEUNPACKER_H
|
|
|
|
#include <vector>
|
|
#include "lib/types.h"
|
|
#include "CStr.h"
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
// CFileUnpacker: class to assist in reading of binary files
|
|
class CFileUnpacker
|
|
{
|
|
public:
|
|
// exceptions thrown by class
|
|
class CError { };
|
|
class CFileTypeError : public CError { };
|
|
class CFileVersionError : public CError { };
|
|
class CFileOpenError : public CError { };
|
|
class CFileReadError : public CError { };
|
|
class CFileEOFError : public CError { };
|
|
|
|
public:
|
|
// constructor
|
|
CFileUnpacker();
|
|
|
|
~CFileUnpacker();
|
|
|
|
// Read: open and read in given file, check magic bits against those given; throw
|
|
// variety of exceptions for missing files etc
|
|
void Read(const char* filename,const char magicstr[4]);
|
|
|
|
// GetVersion: return stored file version
|
|
u32 GetVersion() const { return m_Version; }
|
|
|
|
// UnpackRaw: unpack given number of bytes from the input stream into the given array
|
|
// - throws CFileEOFError if the end of the data stream is reached before the given
|
|
// number of bytes have been read
|
|
void UnpackRaw(void* rawdata,u32 rawdatalen);
|
|
// UnpackString: unpack a string from the raw data stream
|
|
void UnpackString(CStr& result);
|
|
|
|
private:
|
|
// the data read from file and used during unpack operations
|
|
void* m_Buf;
|
|
size_t m_Size;
|
|
// current unpack position in stream
|
|
u32 m_UnpackPos;
|
|
// version of the file currently being read
|
|
u32 m_Version;
|
|
};
|
|
|
|
#endif
|