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Diffstat (limited to 'boost/log/utility/functional/ends_with.hpp')
-rw-r--r-- | boost/log/utility/functional/ends_with.hpp | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/boost/log/utility/functional/ends_with.hpp b/boost/log/utility/functional/ends_with.hpp new file mode 100644 index 0000000000..ddf6578a2e --- /dev/null +++ b/boost/log/utility/functional/ends_with.hpp @@ -0,0 +1,57 @@ +/* + * Copyright Andrey Semashev 2007 - 2014. + * 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) + */ +/*! + * \file ends_with.hpp + * \author Andrey Semashev + * \date 30.03.2008 + * + * This header contains a predicate for checking if the provided string ends with a substring. + */ + +#ifndef BOOST_LOG_UTILITY_FUNCTIONAL_ENDS_WITH_HPP_INCLUDED_ +#define BOOST_LOG_UTILITY_FUNCTIONAL_ENDS_WITH_HPP_INCLUDED_ + +#include <boost/log/detail/config.hpp> +#include <boost/log/detail/header.hpp> + +#ifdef BOOST_HAS_PRAGMA_ONCE +#pragma once +#endif + +namespace boost { + +BOOST_LOG_OPEN_NAMESPACE + +//! The \c ends_with functor +struct ends_with_fun +{ + typedef bool result_type; + + template< typename T, typename U > + bool operator() (T const& left, U const& right) const + { + typedef typename T::const_reverse_iterator left_iterator; + typedef typename U::const_reverse_iterator right_iterator; + + left_iterator left_it = left.rbegin(), left_end = left.rend(); + right_iterator right_it = right.rbegin(), right_end = right.rend(); + for (; left_it != left_end && right_it != right_end; ++left_it, ++right_it) + { + if (*left_it != *right_it) + break; + } + return right_it == right_end; + } +}; + +BOOST_LOG_CLOSE_NAMESPACE // namespace log + +} // namespace boost + +#include <boost/log/detail/footer.hpp> + +#endif // BOOST_LOG_UTILITY_FUNCTIONAL_ENDS_WITH_HPP_INCLUDED_ |