84 lines
2.4 KiB
C++
84 lines
2.4 KiB
C++
#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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