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/**
* @file llcommonutils.h
* @brief Commin utils
*
* $LicenseInfo:firstyear=2010&license=viewergpl$
*
* Copyright (c) 2010, Linden Research, Inc.
*
* Second Life Viewer Source Code
* The source code in this file ("Source Code") is provided by Linden Lab
* to you under the terms of the GNU General Public License, version 2.0
* ("GPL"), unless you have obtained a separate licensing agreement
* ("Other License"), formally executed by you and Linden Lab. Terms of
* the GPL can be found in doc/GPL-license.txt in this distribution, or
* online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
*
* There are special exceptions to the terms and conditions of the GPL as
* it is applied to this Source Code. View the full text of the exception
* in the file doc/FLOSS-exception.txt in this software distribution, or
* online at http://secondlifegrid.net/programs/open_source/licensing/flossexception
*
* By copying, modifying or distributing this software, you acknowledge
* that you have read and understood your obligations described above,
* and agree to abide by those obligations.
*
* ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
* WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
* COMPLETENESS OR PERFORMANCE.
* $/LicenseInfo$
*/
#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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