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83 lines
2.4 KiB
83 lines
2.4 KiB
#ifndef BOOST_ARCHIVE_ITERATORS_OSTREAM_ITERATOR_HPP |
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#define BOOST_ARCHIVE_ITERATORS_OSTREAM_ITERATOR_HPP |
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// MS compatible compilers support #pragma once |
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#if defined(_MSC_VER) && (_MSC_VER >= 1020) |
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# pragma once |
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#endif |
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/////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8 |
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// ostream_iterator.hpp |
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// (C) Copyright 2002 Robert Ramey - http://www.rrsd.com . |
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// Use, modification and distribution is subject to the Boost Software |
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// License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at |
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// http://www.boost.org/LICENSE_1_0.txt) |
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// See http://www.boost.org for updates, documentation, and revision history. |
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// note: this is a custom version of the standard ostream_iterator. |
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// This is necessary as the standard version doesn't work as expected |
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// for wchar_t based streams on systems for which wchar_t not a true |
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// type but rather a synonym for some integer type. |
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#include <ostream> |
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#include <boost/iterator/iterator_facade.hpp> |
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namespace boost { |
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namespace archive { |
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namespace iterators { |
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// given a type, make an input iterator based on a pointer to that type |
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template<class Elem> |
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class ostream_iterator : |
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public boost::iterator_facade< |
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ostream_iterator<Elem>, |
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Elem, |
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std::output_iterator_tag, |
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ostream_iterator<Elem> & |
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> |
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{ |
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friend class boost::iterator_core_access; |
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typedef ostream_iterator this_t ; |
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typedef Elem char_type; |
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typedef std::basic_ostream<char_type> ostream_type; |
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//emulate the behavior of std::ostream |
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ostream_iterator & dereference() const { |
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return const_cast<ostream_iterator &>(*this); |
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} |
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bool equal(const this_t & rhs) const { |
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return m_ostream == rhs.m_ostream; |
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} |
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void increment(){} |
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protected: |
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ostream_type *m_ostream; |
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void put_val(char_type e){ |
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if(NULL != m_ostream){ |
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m_ostream->put(e); |
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if(! m_ostream->good()) |
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m_ostream = NULL; |
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} |
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} |
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public: |
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this_t & operator=(char_type c){ |
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put_val(c); |
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return *this; |
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} |
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ostream_iterator(ostream_type & os) : |
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m_ostream (& os) |
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{} |
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ostream_iterator() : |
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m_ostream (NULL) |
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{} |
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ostream_iterator(const ostream_iterator & rhs) : |
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m_ostream (rhs.m_ostream) |
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{} |
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}; |
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} // namespace iterators |
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} // namespace archive |
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} // namespace boost |
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#endif // BOOST_ARCHIVE_ITERATORS_OSTREAM_ITERATOR_HPP
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