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/*
* Copyright (C) 2001-2008 Jacek Sieka, arnetheduck on gmail point com
*
* 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 2 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, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifndef DCPLUSPLUS_DCPP_SEGMENT_H_
#define DCPLUSPLUS_DCPP_SEGMENT_H_
class Segment {
public:
Segment() : start(0), size(-1) { }
Segment(int64_t start_, int64_t size_) : start(start_), size(size_) { }
int64_t getStart() const { return start; }
int64_t getSize() const { return size; }
int64_t getEnd() const { return getStart() + getSize(); }
void setSize(int64_t size_) { size = size_; }
bool overlaps(const Segment& rhs) const {
int64_t end = getEnd();
int64_t rend = rhs.getEnd();
return getStart() < rend && rhs.getStart() < end;
}
void trim(const Segment& rhs) {
if(!overlaps(rhs)) {
return;
}
if(rhs.getStart() < start) {
int64_t rend = rhs.getEnd();
if(rend > getEnd()) {
start = size = 0;
} else {
size -= rend - start;
start = rend;
}
return;
}
size = rhs.getStart() - start;
}
bool operator==(const Segment& rhs) const {
return getStart() == rhs.getStart() && getSize() == rhs.getSize();
}
bool operator<(const Segment& rhs) const {
return (getStart() < rhs.getStart()) || (getStart() == rhs.getStart() && getSize() < rhs.getSize());
}
private:
int64_t start;
int64_t size;
};
#endif /*SEGMENT_H_*/
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