Sprout/tools/sprig/algorithm/string/find_skip.hpp
2014-06-05 16:44:19 +09:00

80 lines
2.5 KiB
C++

/*=============================================================================
Copyright (c) 2011-2014 Bolero MURAKAMI
https://github.com/bolero-MURAKAMI/Sprout
Distributed under the Boost Software License, Version 1.0. (See accompanying
file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
=============================================================================*/
#ifndef TOOLS_SPRIG_ALGORITHM_STRING_FIND_SKIP_HPP
#define TOOLS_SPRIG_ALGORITHM_STRING_FIND_SKIP_HPP
#include <boost/range/functions.hpp>
#include <boost/range/metafunctions.hpp>
#include <boost/range/iterator_range.hpp>
#include <boost/algorithm/string/find.hpp>
namespace sprig {
//
// skip_finder
//
template<typename Finder>
struct skip_finderF {
private:
Finder finder_;
public:
explicit skip_finderF(Finder const& finder)
: finder_(finder)
{}
template<typename ForwardIterator>
boost::iterator_range<ForwardIterator>
operator()(ForwardIterator first, ForwardIterator last) const {
return boost::iterator_range<ForwardIterator>(boost::end(finder_(first, last)), last);
}
};
template<typename Finder>
inline sprig::skip_finderF<Finder>
skip_finder(Finder const& finder) {
return sprig::skip_finderF<Finder>(finder);
}
//
// find_skip
//
template<typename Range, typename Finder>
inline boost::iterator_range<typename boost::range_iterator<Range>::type>
find_skip(Range& input, Finder const& finder) {
return boost::algorithm::find(input, sprig::skip_finder(finder));
}
//
// skip_backward_finder
//
template<typename Finder>
struct skip_backward_finderF {
private:
Finder finder_;
public:
explicit skip_backward_finderF(Finder const& finder)
: finder_(finder)
{}
template<typename ForwardIterator>
boost::iterator_range<ForwardIterator>
operator()(ForwardIterator first, ForwardIterator last) const {
return boost::iterator_range<ForwardIterator>(first, boost::begin(finder_(first, last)));
}
};
template<typename Finder>
inline sprig::skip_backward_finderF<Finder>
skip_backward_finder(Finder const& finder) {
return sprig::skip_backward_finderF<Finder>(finder);
}
//
// find_skip_backward
//
template<typename Range, typename Finder>
inline boost::iterator_range<typename boost::range_iterator<Range>::type>
find_skip_backward(Range& input, Finder const& finder) {
return boost::algorithm::find(input, sprig::skip_backward_finder(finder));
}
} // namespace sprig
#endif // #ifndef TOOLS_SPRIG_ALGORITHM_STRING_FIND_SKIP_HPP