/usr/include/votca/tools/rangeparser.h is in libvotca-tools-dev 1.4.1-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* Copyright 2009-2011 The VOTCA Development Team (http://www.votca.org)
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#ifndef _RANGEPARSER_H
#define _RANGEPARSER_H
#include <list>
#include <string>
#include <ostream>
namespace votca { namespace tools {
using namespace std;
/**
* \brief RangeParser
*
* parse strings like min:step:max, not flexible enough yet to be really useful
*/
class RangeParser
{
public:
RangeParser();
void Parse(string range);
void Add(int begin, int end, int stride=1);
private:
struct block_t {
block_t() {}
block_t(const int &begin, const int &end, const int &stride)
: _begin(begin), _end(end), _stride(stride) {}
int _begin, _end, _stride;
};
public:
struct iterator {
iterator() {}
int operator*() const
{ return _current; }
RangeParser::iterator &operator++();
bool operator==(const RangeParser::iterator &);
bool operator!=(const RangeParser::iterator &);
private:
RangeParser *_parent;
iterator(RangeParser *, list<block_t>::iterator);
list<block_t>::iterator _block;
int _current;
friend class RangeParser;
};
RangeParser::iterator begin();
RangeParser::iterator end();
private:
void ParseBlock(string block);
int ToNumber(string str);
list< block_t > _blocks;
//bool _has_begin, _has_end;
//int _begin, _end;
friend std::ostream &operator<<(std::ostream &out, const RangeParser &rp);
};
inline void RangeParser::Add(int begin, int end, int stride)
{
_blocks.push_back(block_t(begin, end, stride));
}
inline RangeParser::iterator RangeParser::begin()
{
return RangeParser::iterator(this, _blocks.begin());
}
inline RangeParser::iterator RangeParser::end()
{
return RangeParser::iterator(this, _blocks.end());
}
inline RangeParser::iterator::iterator(RangeParser *parent, list<block_t>::iterator block)
: _parent(parent), _block(block)
{
if(block != parent->_blocks.end())
_current = (*block)._begin;
else
_current = -1;
}
inline bool RangeParser::iterator::operator==(const RangeParser::iterator &i)
{
return (_block == i._block) && (_current == i._current);
}
inline bool RangeParser::iterator::operator!=(const RangeParser::iterator &i)
{
return !((_block == i._block) && (_current == i._current));
}
inline std::ostream &operator<<(std::ostream &out, const RangeParser &rp)
{
std::list< RangeParser::block_t >::const_iterator iter(rp._blocks.begin());
for(; iter!=rp._blocks.end(); ++iter) {
if(iter!=rp._blocks.begin())
out << ",";
if(iter->_begin == iter->_end)
out << iter->_begin;
else if(iter->_stride == 1)
out << iter->_begin << ":" << iter->_end;
else
out << iter->_begin << ":" << iter->_stride << ":" << iter->_end;
}
return out;
}
}}
#endif /* _RANGEPARSER_H */
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