dolphin/Source/Core/Common/Src/ChunkFile.h

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// Copyright (C) 2003-2008 Dolphin Project.
// 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, version 2.0.
// 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 2.0 for more details.
// A copy of the GPL 2.0 should have been included with the program.
// If not, see http://www.gnu.org/licenses/
// Official SVN repository and contact information can be found at
// http://code.google.com/p/dolphin-emu/
#ifndef _CHUNKFILE_H
#define _CHUNKFILE_H
// Class to read/write/verify hierarchical binary file formats.
// Grabbed from one of my older projects and modified heavily.
// Works more like a RIFF file than a Google Protocol Buffer, for example.
#include "Common.h"
#include <stdio.h>
#include <map>
#include <vector>
//TO REMEMBER WHEN USING:
//EITHER a chunk contains ONLY data
//OR it contains ONLY other chunks
//otherwise the scheme breaks...
class ChunkFile
{
public:
enum ChunkFileMode
{
MODE_READ,
MODE_WRITE,
MODE_VERIFY,
};
private:
struct ChunkInfo
{
int startLocation;
int parentStartLocation;
int parentEOF;
unsigned int ID;
int length;
};
ChunkInfo stack[8];
int stack_ptr;
char *data;
int size;
int eof;
ChunkFileMode mode;
FILE *f;
bool didFail;
// Used for internal bookkeeping only.
int ReadInt();
void WriteInt(int x);
public:
ChunkFile(const char *filename, ChunkFileMode mode);
~ChunkFile();
// Only pass 4-character IDs.
bool Descend(const char *id);
void Ascend();
//void Do(int &i);
//bool Do(std::string &s);
bool Do(void *ptr, int size);
// Future
// bool DoCompressed(void *ptr, int size)
// Store maps to file. Very useful.
template<class T>
void Do(std::map<u32, T> &x) {
}
// Store vectors.
template<class T>
void Do(std::vector<T> &x) {
}
// Handle everything else
template<class T>
void Do(T &x) {
Do((void *)&x, sizeof(x));
}
int GetCurrentChunkSize();
bool failed() {return didFail;}
};
#endif