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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 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.
*
* $URL$
* $Id$
*
*/
#include "common/debug.h"
#include "mohawk/myst.h"
#include "mohawk/resource_cache.h"
namespace Mohawk {
ResourceCache::ResourceCache() {
enabled = true;
}
ResourceCache::~ResourceCache() {
clear();
}
void ResourceCache::clear() {
if (!enabled)
return;
debugC(kDebugCache, "Clearing Cache...");
// TODO: Not sure if need to explicitly delete DataObject.data element ie.
// returned by readStream method here.
store.clear();
}
void ResourceCache::add(uint32 tag, uint16 id, Common::SeekableReadStream *data) {
if (!enabled)
return;
debugC(kDebugCache, "Adding item %d - tag 0x%04X id %d", store.size(), tag, id);
DataObject current;
current.tag = tag;
current.id = id;
uint32 dataCurPos = data->pos();
current.data = data->readStream(data->size());
data->seek(dataCurPos);
store.push_back(current);
}
// Returns NULL if not found
Common::SeekableReadStream *ResourceCache::search(uint32 tag, uint16 id) {
if (!enabled)
return NULL;
debugC(kDebugCache, "Searching for tag 0x%04X id %d", tag, id);
for (uint32 i = 0; i < store.size(); i++) {
if (tag == store[i].tag && id == store[i].id) {
debugC(kDebugCache, "Found cached tag 0x%04X id %u", tag, id);
uint32 dataCurPos = store[i].data->pos();
Common::SeekableReadStream *ret = store[i].data->readStream(store[i].data->size());
store[i].data->seek(dataCurPos);
return ret;
}
}
debugC(kDebugCache, "tag 0x%04X id %d not found", tag, id);
return NULL;
}
} // End of namespace Mohawk
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