102 lines
2.5 KiB
C++
102 lines
2.5 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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#include "common/memstream.h"
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#include "ultima/ultima8/misc/debugger.h"
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#include "ultima/ultima8/filesys/raw_archive.h"
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namespace Ultima {
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namespace Ultima8 {
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RawArchive::~RawArchive() {
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Archive::uncache();
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}
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void RawArchive::cache(uint32 index) {
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if (index >= _count) return;
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if (_objects.empty()) _objects.resize(_count);
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if (_objects[index]) return;
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_objects[index] = getRawObject(index);
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}
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void RawArchive::uncache(uint32 index) {
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if (index >= _count) return;
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if (_objects.empty()) return;
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if (_objects[index]) {
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delete[] _objects[index];
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_objects[index] = nullptr;
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}
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}
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bool RawArchive::isCached(uint32 index) const {
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if (index >= _count) return false;
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if (_objects.empty()) return false;
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return (_objects[index] != nullptr);
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}
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const uint8 *RawArchive::get_object_nodel(uint32 index) {
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if (index >= _count)
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return nullptr;
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cache(index);
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return _objects[index];
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}
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uint8 *RawArchive::get_object(uint32 index) {
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if (index >= _count)
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return nullptr;
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if (index < _objects.size() && _objects[index]) {
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// already cached
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uint32 size = getRawSize(index);
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if (size == 0)
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return nullptr;
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uint8 *object = new uint8[size];
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memcpy(object, _objects[index], size);
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return object;
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}
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return getRawObject(index);
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}
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uint32 RawArchive::get_size(uint32 index) const {
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if (index >= _count)
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return 0;
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return getRawSize(index);
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}
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Common::SeekableReadStream *RawArchive::get_datasource(uint32 index) {
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if (index >= _count)
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return nullptr;
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cache(index);
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if (!_objects[index])
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return nullptr;
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return new Common::MemoryReadStream(_objects[index], getRawSize(index));
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}
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} // End of namespace Ultima8
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} // End of namespace Ultima
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