/*
* This file is part of rasdaman community.
*
* Rasdaman community 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.
*
* Rasdaman community 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 rasdaman community. If not, see .
*
* Copyright 2003, 2004, 2005, 2006, 2007, 2008, 2009 Peter Baumann /
rasdaman GmbH.
*
* For more information please see
* or contact Peter Baumann via .
*/
#ifndef _ECWMEMFS_HH_
#define _ECWMEMFS_HH_
#include "raslib/mddtypes.hh"
class MemoryFileSystem
{
public:
enum m_Error
{
No_Error = 0,
Error = 1
};
MemoryFileSystem();
///open file an read into memory - completely
m_Error open(const char* fileName);
///use this memory chunk with mSize bytes length
m_Error open(const char* memorySource, r_Bytes mSize);
///close and deinitialise (delete only my own data)
m_Error close();
///call close
~MemoryFileSystem();
///read bSize bytes into buffer, only if bSize bytes are available
m_Error read(void* buffer, r_Bytes bSize);
///get current position
unsigned long long tell();
///go to offset bytes from begining of memory
m_Error seek(unsigned long long offset);
///if you use open(const* char) and the pointer is memorySrcName then no file will be read but this pointer
static const char* memorySrc;
///file names which point to this will not read from file system but from memorySrc
static const char* memorySrcName;
///the length of the memorySrc chunk must be specified in memoryLength
static r_Bytes memorySrcLength;
private:
///my memory block
char* source;
///my current position
char* current;
///am i closed
bool closed;
///do i own my memory data
bool owner;
///how long is my memory data
r_Bytes length;
};
#endif