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/**
* @file llcommonutils.h
* @brief Commin utils
*
* $LicenseInfo:firstyear=2010&license=viewerlgpl$
* Second Life Viewer Source Code
* Copyright (C) 2010, Linden Research, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation;
* version 2.1 of the License only.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
* $/LicenseInfo$
*/
#include "linden_common.h"
#include "llcommonutils.h"
void LLCommonUtils::computeDifference(
const uuid_vec_t& vnew,
const uuid_vec_t& vcur,
uuid_vec_t& vadded,
uuid_vec_t& vremoved)
{
uuid_vec_t vnew_copy(vnew);
uuid_vec_t vcur_copy(vcur);
std::sort(vnew_copy.begin(), vnew_copy.end());
std::sort(vcur_copy.begin(), vcur_copy.end());
size_t maxsize = llmax(vnew_copy.size(), vcur_copy.size());
vadded.resize(maxsize);
vremoved.resize(maxsize);
uuid_vec_t::iterator it;
// what was removed
it = set_difference(vcur_copy.begin(), vcur_copy.end(), vnew_copy.begin(), vnew_copy.end(), vremoved.begin());
vremoved.erase(it, vremoved.end());
// what was added
it = set_difference(vnew_copy.begin(), vnew_copy.end(), vcur_copy.begin(), vcur_copy.end(), vadded.begin());
vadded.erase(it, vadded.end());
}
// EOF
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