1#ifndef BOOST_ARCHIVE_ITERATORS_INSERT_LINEBREAKS_HPP
2#define BOOST_ARCHIVE_ITERATORS_INSERT_LINEBREAKS_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// insert_linebreaks.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#include <boost/assert.hpp>
20
21#include <boost/config.hpp>
22#if defined(BOOST_NO_STDC_NAMESPACE)
23namespace std{ using ::memcpy; }
24#endif
25
26#include <boost/iterator/iterator_adaptor.hpp>
27#include <boost/iterator/iterator_traits.hpp>
28
29namespace boost {
30namespace archive {
31namespace iterators {
32
33/////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8
34// insert line break every N characters
35template<
36 class Base,
37 int N,
38 class CharType = typename boost::iterator_value<Base>::type
39>
40class insert_linebreaks :
41 public iterator_adaptor<
42 insert_linebreaks<Base, N, CharType>,
43 Base,
44 CharType,
45 single_pass_traversal_tag,
46 CharType
47 >
48{
49private:
50 friend class boost::iterator_core_access;
51 typedef iterator_adaptor<
52 insert_linebreaks<Base, N, CharType>,
53 Base,
54 CharType,
55 single_pass_traversal_tag,
56 CharType
57 > super_t;
58
59 bool equal(const insert_linebreaks<Base, N, CharType> & rhs) const {
60 return
61// m_count == rhs.m_count
62// && base_reference() == rhs.base_reference()
63 this->base_reference() == rhs.base_reference()
64 ;
65 }
66
67 void increment() {
68 if(m_count == N){
69 m_count = 0;
70 return;
71 }
72 ++m_count;
73 ++(this->base_reference());
74 }
75 CharType dereference() const {
76 if(m_count == N)
77 return '\n';
78 return * (this->base_reference());
79 }
80 unsigned int m_count;
81public:
82 // make composable by using templated constructor
83 template<class T>
84 insert_linebreaks(T start) :
85 super_t(Base(static_cast< T >(start))),
86 m_count(0)
87 {}
88 // intel 7.1 doesn't like default copy constructor
89 insert_linebreaks(const insert_linebreaks & rhs) :
90 super_t(rhs.base_reference()),
91 m_count(rhs.m_count)
92 {}
93};
94
95} // namespace iterators
96} // namespace archive
97} // namespace boost
98
99#endif // BOOST_ARCHIVE_ITERATORS_INSERT_LINEBREAKS_HPP
100

source code of boost/libs/serialization/include/boost/archive/iterators/insert_linebreaks.hpp