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/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* 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 3 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, see <http://www.gnu.org/licenses/>.
*
*/
#ifndef ULTIMA8_FILESYS_FLEXFILE_H
#define ULTIMA8_FILESYS_FLEXFILE_H
namespace Ultima {
namespace Ultima8 {
class FlexFile {
public:
//! create FlexFile from datasource; FlexFile takes ownership of ds
//! and deletes it when destructed
explicit FlexFile(Common::SeekableReadStream *rs);
~FlexFile();
//! Check if constructed object is indeed a valid archive
bool isValid() const {
return _valid;
}
//! Check if numbered object exists
//! \param index index of object to check for
bool exists(uint32 index) {
return getSize(index) > 0;
}
//! Get object as a Common::SeekableReadStream
//! Delete the SeekableReadStream afterwards; that will delete the data as well
Common::SeekableReadStream *getDataSource(uint32 index, bool is_text = false);
//! Get object from file; returns NULL if index is invalid.
//! Must delete the returned buffer afterwards.
//! See also exists(uint32 index)
//! \param index index of object to fetch
//! \param size if non-NULL, size of object is stored in *size
uint8 *getObject(uint32 index, uint32 *size = nullptr);
//! Get size of object; returns zero if index is invalid.
//! See also exists(uint32 index)
//! \param index index of object to get size of
uint32 getSize(uint32 index) const;
//! Get upper bound for number of objects.
//! In an indexed file this is (probably) the highest index plus one,
//! while in a named file it's (probably) the actual count
uint32 getCount() const {
return _entries.size();
}
static bool isFlexFile(Common::SeekableReadStream *rs);
protected:
Common::SeekableReadStream *_rs;
bool _valid;
struct FileEntry {
uint32 _offset;
uint32 _size;
FileEntry() : _offset(0), _size(0) {}
};
Common::Array<FileEntry> _entries;
private:
bool readMetadata();
};
} // End of namespace Ultima8
} // End of namespace Ultima
#endif
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