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1 | #ifndef BOOST_ARCHIVE_ITERATORS_OSTREAM_ITERATOR_HPP |
2 | #define BOOST_ARCHIVE_ITERATORS_OSTREAM_ITERATOR_HPP | |
3 | ||
4 | // MS compatible compilers support #pragma once | |
5 | #if defined(_MSC_VER) | |
6 | # pragma once | |
7 | #endif | |
8 | ||
9 | /////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8 | |
10 | // ostream_iterator.hpp | |
11 | ||
12 | // (C) Copyright 2002 Robert Ramey - http://www.rrsd.com . | |
13 | // Use, modification and distribution is subject to the Boost Software | |
14 | // License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at | |
15 | // http://www.boost.org/LICENSE_1_0.txt) | |
16 | ||
17 | // See http://www.boost.org for updates, documentation, and revision history. | |
18 | ||
19 | // note: this is a custom version of the standard ostream_iterator. | |
20 | // This is necessary as the standard version doesn't work as expected | |
21 | // for wchar_t based streams on systems for which wchar_t not a true | |
22 | // type but rather a synonym for some integer type. | |
23 | ||
24 | #include <ostream> | |
25 | #include <boost/iterator/iterator_facade.hpp> | |
26 | ||
27 | namespace boost { | |
28 | namespace archive { | |
29 | namespace iterators { | |
30 | ||
31 | // given a type, make an input iterator based on a pointer to that type | |
32 | template<class Elem> | |
33 | class ostream_iterator : | |
34 | public boost::iterator_facade< | |
35 | ostream_iterator<Elem>, | |
36 | Elem, | |
37 | std::output_iterator_tag, | |
38 | ostream_iterator<Elem> & | |
39 | > | |
40 | { | |
41 | friend class boost::iterator_core_access; | |
42 | typedef ostream_iterator this_t ; | |
43 | typedef Elem char_type; | |
44 | typedef std::basic_ostream<char_type> ostream_type; | |
45 | ||
46 | //emulate the behavior of std::ostream | |
47 | ostream_iterator & dereference() const { | |
48 | return const_cast<ostream_iterator &>(*this); | |
49 | } | |
50 | bool equal(const this_t & rhs) const { | |
51 | return m_ostream == rhs.m_ostream; | |
52 | } | |
53 | void increment(){} | |
54 | protected: | |
55 | ostream_type *m_ostream; | |
56 | void put_val(char_type e){ | |
57 | if(NULL != m_ostream){ | |
58 | m_ostream->put(e); | |
59 | if(! m_ostream->good()) | |
60 | m_ostream = NULL; | |
61 | } | |
62 | } | |
63 | public: | |
64 | this_t & operator=(char_type c){ | |
65 | put_val(c); | |
66 | return *this; | |
67 | } | |
68 | ostream_iterator(ostream_type & os) : | |
69 | m_ostream (& os) | |
70 | {} | |
71 | ostream_iterator() : | |
72 | m_ostream (NULL) | |
73 | {} | |
74 | ostream_iterator(const ostream_iterator & rhs) : | |
75 | m_ostream (rhs.m_ostream) | |
76 | {} | |
77 | }; | |
78 | ||
79 | } // namespace iterators | |
80 | } // namespace archive | |
81 | } // namespace boost | |
82 | ||
83 | #endif // BOOST_ARCHIVE_ITERATORS_OSTREAM_ITERATOR_HPP |