1/////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8
2// portable_binary_oarchive.cpp
3
4// (C) Copyright 2002-7 Robert Ramey - http://www.rrsd.com .
5// Use, modification and distribution is subject to the Boost Software
6// License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
7// http://www.boost.org/LICENSE_1_0.txt)
8
9// See http://www.boost.org for updates, documentation, and revision history.
10
11#include <ostream>
12#include <boost/predef/other/endian.h>
13#include "portable_binary_oarchive.hpp"
14
15void
16portable_binary_oarchive::save_impl(
17 const boost::intmax_t l,
18 const char maxsize
19){
20 char size = 0;
21
22 if(l == 0){
23 this->primitive_base_t::save(t: size);
24 return;
25 }
26
27 boost::intmax_t ll;
28 bool negative = (l < 0);
29 if(negative)
30 ll = -l;
31 else
32 ll = l;
33
34 do{
35 ll >>= CHAR_BIT;
36 ++size;
37 }while(ll != 0);
38
39 this->primitive_base_t::save(
40 t: static_cast<char>(negative ? -size : size)
41 );
42
43 if(negative)
44 ll = -l;
45 else
46 ll = l;
47 char * cptr = reinterpret_cast<char *>(& ll);
48 #if BOOST_ENDIAN_BIG_BYTE
49 cptr += (sizeof(boost::intmax_t) - size);
50 if(m_flags & endian_little)
51 reverse_bytes(size, cptr);
52 #else
53 if(m_flags & endian_big)
54 reverse_bytes(size, address: cptr);
55 #endif
56 this->primitive_base_t::save_binary(address: cptr, count: size);
57}
58
59void
60portable_binary_oarchive::init(unsigned int flags) {
61 if(m_flags == (endian_big | endian_little)){
62 boost::serialization::throw_exception(
63 e: portable_binary_oarchive_exception()
64 );
65 }
66 if(0 == (flags & boost::archive::no_header)){
67 // write signature in an archive version independent manner
68 const std::string file_signature(
69 boost::archive::BOOST_ARCHIVE_SIGNATURE()
70 );
71 * this << file_signature;
72 // write library version
73 const boost::archive::library_version_type v(
74 boost::archive::BOOST_ARCHIVE_VERSION()
75 );
76 * this << v;
77 }
78 save(t: static_cast<unsigned char>(m_flags >> CHAR_BIT));
79}
80
81#include <boost/archive/impl/archive_serializer_map.ipp>
82#include <boost/archive/impl/basic_binary_oprimitive.ipp>
83
84namespace boost {
85namespace archive {
86
87namespace detail {
88 template class archive_serializer_map<portable_binary_oarchive>;
89}
90
91template class basic_binary_oprimitive<
92 portable_binary_oarchive,
93 std::ostream::char_type,
94 std::ostream::traits_type
95> ;
96
97} // namespace archive
98} // namespace boost
99

source code of boost/libs/serialization/example/portable_binary_oarchive.cpp