62 lines
2.1 KiB
C++
62 lines
2.1 KiB
C++
/**
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* @file llcommonutils.h
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* @brief Commin utils
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*
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* $LicenseInfo:firstyear=2010&license=viewergpl$
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*
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* Copyright (c) 2010, Linden Research, Inc.
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*
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* Second Life Viewer Source Code
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* The source code in this file ("Source Code") is provided by Linden Lab
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* to you under the terms of the GNU General Public License, version 2.0
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* ("GPL"), unless you have obtained a separate licensing agreement
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* ("Other License"), formally executed by you and Linden Lab. Terms of
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* the GPL can be found in doc/GPL-license.txt in this distribution, or
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* online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
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*
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* There are special exceptions to the terms and conditions of the GPL as
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* it is applied to this Source Code. View the full text of the exception
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* in the file doc/FLOSS-exception.txt in this software distribution, or
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* online at http://secondlifegrid.net/programs/open_source/licensing/flossexception
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*
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* By copying, modifying or distributing this software, you acknowledge
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* that you have read and understood your obligations described above,
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* and agree to abide by those obligations.
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*
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* ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
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* WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
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* COMPLETENESS OR PERFORMANCE.
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* $/LicenseInfo$
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*/
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#include "linden_common.h"
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#include "llcommonutils.h"
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void LLCommonUtils::computeDifference(
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const uuid_vec_t& vnew,
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const uuid_vec_t& vcur,
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uuid_vec_t& vadded,
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uuid_vec_t& vremoved)
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{
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uuid_vec_t vnew_copy(vnew);
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uuid_vec_t vcur_copy(vcur);
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std::sort(vnew_copy.begin(), vnew_copy.end());
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std::sort(vcur_copy.begin(), vcur_copy.end());
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size_t maxsize = llmax(vnew_copy.size(), vcur_copy.size());
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vadded.resize(maxsize);
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vremoved.resize(maxsize);
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uuid_vec_t::iterator it;
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// what was removed
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it = set_difference(vcur_copy.begin(), vcur_copy.end(), vnew_copy.begin(), vnew_copy.end(), vremoved.begin());
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vremoved.erase(it, vremoved.end());
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// what was added
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it = set_difference(vnew_copy.begin(), vnew_copy.end(), vcur_copy.begin(), vcur_copy.end(), vadded.begin());
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vadded.erase(it, vadded.end());
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}
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// EOF
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