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by Razzloss
Copied dcpp/ from 0705-branch |
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/*
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* Copyright (C) 2001-2008 Jacek Sieka, arnetheduck on gmail point com
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifndef DCPLUSPLUS_DCPP_SEGMENT_H_
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#define DCPLUSPLUS_DCPP_SEGMENT_H_
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class Segment { |
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public: |
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Segment() : start(0), size(-1) { } |
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Segment(int64_t start_, int64_t size_) : start(start_), size(size_) { } |
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int64_t getStart() const { return start; } |
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int64_t getSize() const { return size; } |
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int64_t getEnd() const { return getStart() + getSize(); } |
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void setSize(int64_t size_) { size = size_; } |
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bool overlaps(const Segment& rhs) const { |
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int64_t end = getEnd(); |
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int64_t rend = rhs.getEnd(); |
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return getStart() < rend && rhs.getStart() < end; |
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}
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void trim(const Segment& rhs) { |
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if(!overlaps(rhs)) { |
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return; |
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}
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if(rhs.getStart() < start) { |
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int64_t rend = rhs.getEnd(); |
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if(rend > getEnd()) { |
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start = size = 0; |
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} else { |
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size -= rend - start; |
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start = rend; |
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}
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return; |
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}
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size = rhs.getStart() - start; |
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}
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bool operator==(const Segment& rhs) const { |
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return getStart() == rhs.getStart() && getSize() == rhs.getSize(); |
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}
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bool operator<(const Segment& rhs) const { |
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return (getStart() < rhs.getStart()) || (getStart() == rhs.getStart() && getSize() < rhs.getSize()); |
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}
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private: |
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int64_t start; |
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int64_t size; |
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};
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#endif /*SEGMENT_H_*/ |