| // Copyright (c) 2001-2011 Hartmut Kaiser | |
| // | |
| // 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) | |
| #if !defined(BOOST_SPIRIT_KARMA_OSTREAM_ITERATOR_MAY_26_2007_1016PM) | |
| #define BOOST_SPIRIT_KARMA_OSTREAM_ITERATOR_MAY_26_2007_1016PM | |
| #if defined(_MSC_VER) | |
| #pragma once | |
| #endif | |
| #include <iterator> | |
| /////////////////////////////////////////////////////////////////////////////// | |
| namespace boost { namespace spirit { namespace karma | |
| { | |
| /////////////////////////////////////////////////////////////////////////// | |
| // We need our own implementation of an ostream_iterator just to be able | |
| // to access the wrapped ostream, which is necessary for the | |
| // stream_generator, where we must generate the output using the original | |
| // ostream to retain possibly registered facets. | |
| /////////////////////////////////////////////////////////////////////////// | |
| template < | |
| typename T, typename Elem = char | |
| , typename Traits = std::char_traits<Elem> > | |
| class ostream_iterator | |
| : public std::iterator<std::output_iterator_tag, void, void, void, void> | |
| { | |
| public: | |
| typedef Elem char_type; | |
| typedef Traits traits_type; | |
| typedef std::basic_ostream<Elem, Traits> ostream_type; | |
| typedef ostream_iterator<T, Elem, Traits> self_type; | |
| ostream_iterator(ostream_type& os_, Elem const* delim_ = 0) | |
| : os(&os_), delim(delim_) {} | |
| self_type& operator= (T const& val) | |
| { | |
| *os << val; | |
| if (0 != delim) | |
| *os << delim; | |
| return *this; | |
| } | |
| self_type& operator*() { return *this; } | |
| self_type& operator++() { return *this; } | |
| self_type operator++(int) { return *this; } | |
| // expose underlying stream | |
| ostream_type& get_ostream() { return *os; } | |
| ostream_type const& get_ostream() const { return *os; } | |
| // expose good bit of underlying stream object | |
| bool good() const { return get_ostream().good(); } | |
| protected: | |
| ostream_type *os; | |
| Elem const* delim; | |
| }; | |
| }}} | |
| #endif |