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/*
* Copyright (C) 2004-2012 Geometer Plus <[email protected]>
*
* 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 2 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
*/
#ifndef __OLESTORAGE_H__
#define __OLESTORAGE_H__
#include <algorithm>
#include <vector>
#include <string>
#include <ZLInputStream.h>
struct OleEntry {
enum Type {
DIR = 1,
STREAM = 2,
ROOT_DIR = 5,
LOCK_BYTES =3
};
typedef std::vector<unsigned int> Blocks;
std::string name;
unsigned int length;
Type type;
Blocks blocks;
bool isBigBlock;
};
class OleStorage {
public:
static const std::size_t BBD_BLOCK_SIZE;
public:
OleStorage();
bool init(shared_ptr<ZLInputStream>, std::size_t streamSize);
void clear();
const std::vector<OleEntry> &getEntries() const;
bool getEntryByName(std::string name, OleEntry &entry) const;
unsigned int getSectorSize() const;
unsigned int getShortSectorSize() const;
public: //TODO make private
bool countFileOffsetOfBlock(const OleEntry &e, unsigned int blockNumber, unsigned int &result) const;
private:
bool readDIFAT(char *oleBuf);
bool readBBD(char *oleBuf);
bool readSBD(char *oleBuf);
bool readProperties(char *oleBuf);
bool readAllEntries();
bool readOleEntry(int propNumber, OleEntry &entry);
private:
shared_ptr<ZLInputStream> myInputStream;
unsigned int mySectorSize, myShortSectorSize;
std::size_t myStreamSize;
std::vector<int> myDIFAT; //double-indirect file allocation table
std::vector<int> myBBD; //Big Block Depot
std::vector<int> mySBD; //Small Block Depot
std::vector<std::string> myProperties;
std::vector<OleEntry> myEntries;
int myRootEntryIndex;
};
inline const std::vector<OleEntry> &OleStorage::getEntries() const { return myEntries; }
inline unsigned int OleStorage::getSectorSize() const { return mySectorSize; }
inline unsigned int OleStorage::getShortSectorSize() const { return myShortSectorSize; }
#endif /* __OLESTORAGE_H__ */
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