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/*==LICENSE==*
CyanWorlds.com Engine - MMOG client, server and tools
Copyright (C) 2011 Cyan Worlds, Inc.
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/>.
You can contact Cyan Worlds, Inc. by email legal@cyan.com
or by snail mail at:
Cyan Worlds, Inc.
14617 N Newport Hwy
Mead, WA 99021
*==LICENSE==*/
#include "plKeyRefSort.h"
#include "../pnKeyedObject/plKeyImp.h"
#include <algorithm>
std::vector<plKey>* plKeyRefSort::fKeys = nil;
std::vector<plKeyRefSort::KeyRefs> plKeyRefSort::fNumRefs;
int plKeyRefSort::CountRefsRecur(plKey key, std::vector<plKey>& traversedKeys)
{
int numRefs = 0;
if (std::find(traversedKeys.begin(), traversedKeys.end(), key) == traversedKeys.end())
{
traversedKeys.push_back(key);
plKeyImp* iKey = (plKeyImp*)key;
for (int i = 0; i < iKey->GetNumRefs(); i++)
{
plKey refKey = iKey->GetRef(i);
if (std::find(fKeys->begin(), fKeys->end(), refKey) != fKeys->end())
numRefs++;
numRefs += CountRefsRecur(refKey, traversedKeys);
}
}
return numRefs;
}
class RefComp
{
public:
bool operator() (plKey key1, plKey key2) const
{
std::vector<plKeyRefSort::KeyRefs>::iterator it1 = std::find(plKeyRefSort::fNumRefs.begin(), plKeyRefSort::fNumRefs.end(), key1);
std::vector<plKeyRefSort::KeyRefs>::iterator it2 = std::find(plKeyRefSort::fNumRefs.begin(), plKeyRefSort::fNumRefs.end(), key2);
return ((*it1).fNumRefs < (*it2).fNumRefs);
}
};
void plKeyRefSort::Sort(std::vector<plKey>* keys)
{
fKeys = keys;
int numKeys = keys->size();
fNumRefs.resize(numKeys);
int i;
for (i = 0; i < numKeys; i++)
{
plKey curKey = (*keys)[i];
std::vector<plKey> traversedKeys;
int numRefs = CountRefsRecur(curKey, traversedKeys);
fNumRefs[i] = KeyRefs(curKey, numRefs);
}
std::sort(fKeys->begin(), fKeys->end(), RefComp());
}