1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
|
// Copyright (c) 2014-2017, The Monero Project
//
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without modification, are
// permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice, this list of
// conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright notice, this list
// of conditions and the following disclaimer in the documentation and/or other
// materials provided with the distribution.
//
// 3. Neither the name of the copyright holder nor the names of its contributors may be
// used to endorse or promote products derived from this software without specific
// prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
// THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// Parts of this file are originally copyright (c) 2012-2013 The Cryptonote developers
/*! \file binary_archive.h
*
* Portable (low-endian) binary archive */
#pragma once
#include <cassert>
#include <iostream>
#include <iterator>
#include <boost/type_traits/make_unsigned.hpp>
#include "common/varint.h"
#include "warnings.h"
/* I have no clue what these lines means */
PUSH_WARNINGS
DISABLE_VS_WARNINGS(4244)
//TODO: fix size_t warning in x32 platform
/*! \struct binary_archive_base
*
* \brief base for the binary archive type
*
* \detailed It isn't used outside of this file, which its only
* purpse is to define the functions used for the binary_archive. Its
* a header, basically. I think it was declared simply to save typing...
*/
template <class Stream, bool IsSaving>
struct binary_archive_base
{
typedef Stream stream_type;
typedef binary_archive_base<Stream, IsSaving> base_type;
typedef boost::mpl::bool_<IsSaving> is_saving;
typedef uint8_t variant_tag_type;
explicit binary_archive_base(stream_type &s) : stream_(s) { }
/* definition of standard API functions */
void tag(const char *) { }
void begin_object() { }
void end_object() { }
void begin_variant() { }
void end_variant() { }
/* I just want to leave a comment saying how this line really shows
flaws in the ownership model of many OOP languages, that is all. */
stream_type &stream() { return stream_; }
protected:
stream_type &stream_;
};
/* \struct binary_archive
*
* \brief the actualy binary archive type
*
* \detailed The boolean template argument /a W is the is_saving
* parameter for binary_archive_base.
*
* The is_saving parameter says whether the archive is being read from
* (false) or written to (true)
*/
template <bool W>
struct binary_archive;
template <>
struct binary_archive<false> : public binary_archive_base<std::istream, false>
{
explicit binary_archive(stream_type &s) : base_type(s) {
stream_type::streampos pos = stream_.tellg();
stream_.seekg(0, std::ios_base::end);
eof_pos_ = stream_.tellg();
stream_.seekg(pos);
}
template <class T>
void serialize_int(T &v)
{
serialize_uint(*(typename boost::make_unsigned<T>::type *)&v);
}
/*! \fn serialize_uint
*
* \brief serializes an unsigned integer
*/
template <class T>
void serialize_uint(T &v, size_t width = sizeof(T))
{
T ret = 0;
unsigned shift = 0;
for (size_t i = 0; i < width; i++) {
//std::cerr << "tell: " << stream_.tellg() << " value: " << ret << std::endl;
char c;
stream_.get(c);
T b = (unsigned char)c;
ret += (b << shift); // can this be changed to OR, i think it can.
shift += 8;
}
v = ret;
}
void serialize_blob(void *buf, size_t len, const char *delimiter="")
{
stream_.read((char *)buf, len);
}
template <class T>
void serialize_varint(T &v)
{
serialize_uvarint(*(typename boost::make_unsigned<T>::type *)(&v));
}
template <class T>
void serialize_uvarint(T &v)
{
typedef std::istreambuf_iterator<char> it;
tools::read_varint(it(stream_), it(), v); // XXX handle failure
}
void begin_array(size_t &s)
{
serialize_varint(s);
}
void begin_array() { }
void delimit_array() { }
void end_array() { }
void begin_string(const char *delimiter /*="\""*/) { }
void end_string(const char *delimiter /*="\""*/) { }
void read_variant_tag(variant_tag_type &t) {
serialize_int(t);
}
size_t remaining_bytes() {
if (!stream_.good())
return 0;
//std::cerr << "tell: " << stream_.tellg() << std::endl;
assert(stream_.tellg() <= eof_pos_);
return eof_pos_ - stream_.tellg();
}
protected:
std::streamoff eof_pos_;
};
template <>
struct binary_archive<true> : public binary_archive_base<std::ostream, true>
{
explicit binary_archive(stream_type &s) : base_type(s) { }
template <class T>
void serialize_int(T v)
{
serialize_uint(static_cast<typename boost::make_unsigned<T>::type>(v));
}
template <class T>
void serialize_uint(T v)
{
for (size_t i = 0; i < sizeof(T); i++) {
stream_.put((char)(v & 0xff));
if (1 < sizeof(T)) v >>= 8;
}
}
void serialize_blob(void *buf, size_t len, const char *delimiter="")
{
stream_.write((char *)buf, len);
}
template <class T>
void serialize_varint(T &v)
{
serialize_uvarint(*(typename boost::make_unsigned<T>::type *)(&v));
}
template <class T>
void serialize_uvarint(T &v)
{
typedef std::ostreambuf_iterator<char> it;
tools::write_varint(it(stream_), v);
}
void begin_array(size_t s)
{
serialize_varint(s);
}
void begin_array() { }
void delimit_array() { }
void end_array() { }
void begin_string(const char *delimiter="\"") { }
void end_string(const char *delimiter="\"") { }
void write_variant_tag(variant_tag_type t) {
serialize_int(t);
}
};
POP_WARNINGS
|
