91 lines
2.7 KiB
C++
91 lines
2.7 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#ifndef ULTIMA8_FILESYS_FLEXFILE_H
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#define ULTIMA8_FILESYS_FLEXFILE_H
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namespace Ultima {
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namespace Ultima8 {
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class FlexFile {
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public:
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//! create FlexFile from datasource; FlexFile takes ownership of ds
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//! and deletes it when destructed
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explicit FlexFile(Common::SeekableReadStream *rs);
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~FlexFile();
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//! Check if constructed object is indeed a valid archive
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bool isValid() const {
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return _valid;
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}
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//! Check if numbered object exists
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//! \param index index of object to check for
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bool exists(uint32 index) {
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return getSize(index) > 0;
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}
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//! Get object as a Common::SeekableReadStream
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//! Delete the SeekableReadStream afterwards; that will delete the data as well
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Common::SeekableReadStream *getDataSource(uint32 index, bool is_text = false);
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//! Get object from file; returns NULL if index is invalid.
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//! Must delete the returned buffer afterwards.
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//! See also exists(uint32 index)
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//! \param index index of object to fetch
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//! \param size if non-NULL, size of object is stored in *size
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uint8 *getObject(uint32 index, uint32 *size = nullptr);
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//! Get size of object; returns zero if index is invalid.
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//! See also exists(uint32 index)
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//! \param index index of object to get size of
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uint32 getSize(uint32 index) const;
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//! Get upper bound for number of objects.
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//! In an indexed file this is (probably) the highest index plus one,
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//! while in a named file it's (probably) the actual count
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uint32 getCount() const {
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return _entries.size();
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}
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static bool isFlexFile(Common::SeekableReadStream *rs);
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protected:
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Common::SeekableReadStream *_rs;
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bool _valid;
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struct FileEntry {
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uint32 _offset;
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uint32 _size;
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FileEntry() : _offset(0), _size(0) {}
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};
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Common::Array<FileEntry> _entries;
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private:
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bool readMetadata();
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};
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} // End of namespace Ultima8
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} // End of namespace Ultima
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#endif
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