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
232
233
234
235
236
237
238
239
240
241
242
243
244
245
|
#ifndef JSONCONS_BSON_BSON_OID_HPP
#define JSONCONS_BSON_BSON_OID_HPP
/*
* Implements class oid_t and non member function bson_oid_to_string
*
* Based on the libjson functions bson_oid_to_string
* and bson_oid_init_from_string_unsafe , available at
* https://github.com/mongodb/mongo-c-driver/blob/master/src/libbson/src/bson/bson-oid.h
* and https://github.com/mongodb/mongo-c-driver/blob/master/src/libbson/src/bson/bson-oid.c
*
*/
/*
* Copyright 2015 MongoDB, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <cstdlib>
#include <cstring>
#include <ctype.h>
#include <system_error>
#include <algorithm>
#include <string>
#include <type_traits>
#include <array>
#include <jsoncons/config/jsoncons_config.hpp>
namespace jsoncons { namespace bson {
class oid_t
{
std::array<uint8_t,12> bytes_;
public:
using iterator = std::array<uint8_t,12>::iterator;
using const_iterator = std::array<uint8_t,12>::const_iterator;
oid_t(const std::array<uint8_t,12>& bytes)
: bytes_(bytes)
{
}
oid_t(uint8_t data[12])
{
std::memcpy(bytes_.data(),data,12);
}
oid_t(const string_view& str)
{
for (std::size_t i = 0; i < bytes_.size(); i++)
{
bytes_[i] = ((parse_hex_char (str[2 * i]) << 4) |
(parse_hex_char (str[2 * i + 1])));
}
}
const uint8_t* data() const
{
return bytes_.data();
}
std::size_t size() const
{
return bytes_.size();
}
iterator begin()
{
return bytes_.begin();
}
iterator end()
{
return bytes_.end();
}
const_iterator begin() const
{
return bytes_.begin();
}
const_iterator end() const
{
return bytes_.end();
}
private:
static uint8_t parse_hex_char (char hex)
{
switch (hex) {
case '0':
return 0;
case '1':
return 1;
case '2':
return 2;
case '3':
return 3;
case '4':
return 4;
case '5':
return 5;
case '6':
return 6;
case '7':
return 7;
case '8':
return 8;
case '9':
return 9;
case 'a':
case 'A':
return 0xa;
case 'b':
case 'B':
return 0xb;
case 'c':
case 'C':
return 0xc;
case 'd':
case 'D':
return 0xd;
case 'e':
case 'E':
return 0xe;
case 'f':
case 'F':
return 0xf;
default:
return 0;
}
}
};
namespace detail {
inline
const uint16_t* get_hex_char_pairs(std::true_type) // big endian
{
static const uint16_t hex_char_pairs[] = {
12336, 12337, 12338, 12339, 12340, 12341, 12342, 12343, 12344, 12345, 12385,
12386, 12387, 12388, 12389, 12390, 12592, 12593, 12594, 12595, 12596, 12597,
12598, 12599, 12600, 12601, 12641, 12642, 12643, 12644, 12645, 12646, 12848,
12849, 12850, 12851, 12852, 12853, 12854, 12855, 12856, 12857, 12897, 12898,
12899, 12900, 12901, 12902, 13104, 13105, 13106, 13107, 13108, 13109, 13110,
13111, 13112, 13113, 13153, 13154, 13155, 13156, 13157, 13158, 13360, 13361,
13362, 13363, 13364, 13365, 13366, 13367, 13368, 13369, 13409, 13410, 13411,
13412, 13413, 13414, 13616, 13617, 13618, 13619, 13620, 13621, 13622, 13623,
13624, 13625, 13665, 13666, 13667, 13668, 13669, 13670, 13872, 13873, 13874,
13875, 13876, 13877, 13878, 13879, 13880, 13881, 13921, 13922, 13923, 13924,
13925, 13926, 14128, 14129, 14130, 14131, 14132, 14133, 14134, 14135, 14136,
14137, 14177, 14178, 14179, 14180, 14181, 14182, 14384, 14385, 14386, 14387,
14388, 14389, 14390, 14391, 14392, 14393, 14433, 14434, 14435, 14436, 14437,
14438, 14640, 14641, 14642, 14643, 14644, 14645, 14646, 14647, 14648, 14649,
14689, 14690, 14691, 14692, 14693, 14694, 24880, 24881, 24882, 24883, 24884,
24885, 24886, 24887, 24888, 24889, 24929, 24930, 24931, 24932, 24933, 24934,
25136, 25137, 25138, 25139, 25140, 25141, 25142, 25143, 25144, 25145, 25185,
25186, 25187, 25188, 25189, 25190, 25392, 25393, 25394, 25395, 25396, 25397,
25398, 25399, 25400, 25401, 25441, 25442, 25443, 25444, 25445, 25446, 25648,
25649, 25650, 25651, 25652, 25653, 25654, 25655, 25656, 25657, 25697, 25698,
25699, 25700, 25701, 25702, 25904, 25905, 25906, 25907, 25908, 25909, 25910,
25911, 25912, 25913, 25953, 25954, 25955, 25956, 25957, 25958, 26160, 26161,
26162, 26163, 26164, 26165, 26166, 26167, 26168, 26169, 26209, 26210, 26211,
26212, 26213, 26214};
return hex_char_pairs;
}
inline
const uint16_t* get_hex_char_pairs(std::false_type) // little endian
{
static const uint16_t hex_char_pairs[] = {
12336, 12592, 12848, 13104, 13360, 13616, 13872, 14128, 14384, 14640, 24880,
25136, 25392, 25648, 25904, 26160, 12337, 12593, 12849, 13105, 13361, 13617,
13873, 14129, 14385, 14641, 24881, 25137, 25393, 25649, 25905, 26161, 12338,
12594, 12850, 13106, 13362, 13618, 13874, 14130, 14386, 14642, 24882, 25138,
25394, 25650, 25906, 26162, 12339, 12595, 12851, 13107, 13363, 13619, 13875,
14131, 14387, 14643, 24883, 25139, 25395, 25651, 25907, 26163, 12340, 12596,
12852, 13108, 13364, 13620, 13876, 14132, 14388, 14644, 24884, 25140, 25396,
25652, 25908, 26164, 12341, 12597, 12853, 13109, 13365, 13621, 13877, 14133,
14389, 14645, 24885, 25141, 25397, 25653, 25909, 26165, 12342, 12598, 12854,
13110, 13366, 13622, 13878, 14134, 14390, 14646, 24886, 25142, 25398, 25654,
25910, 26166, 12343, 12599, 12855, 13111, 13367, 13623, 13879, 14135, 14391,
14647, 24887, 25143, 25399, 25655, 25911, 26167, 12344, 12600, 12856, 13112,
13368, 13624, 13880, 14136, 14392, 14648, 24888, 25144, 25400, 25656, 25912,
26168, 12345, 12601, 12857, 13113, 13369, 13625, 13881, 14137, 14393, 14649,
24889, 25145, 25401, 25657, 25913, 26169, 12385, 12641, 12897, 13153, 13409,
13665, 13921, 14177, 14433, 14689, 24929, 25185, 25441, 25697, 25953, 26209,
12386, 12642, 12898, 13154, 13410, 13666, 13922, 14178, 14434, 14690, 24930,
25186, 25442, 25698, 25954, 26210, 12387, 12643, 12899, 13155, 13411, 13667,
13923, 14179, 14435, 14691, 24931, 25187, 25443, 25699, 25955, 26211, 12388,
12644, 12900, 13156, 13412, 13668, 13924, 14180, 14436, 14692, 24932, 25188,
25444, 25700, 25956, 26212, 12389, 12645, 12901, 13157, 13413, 13669, 13925,
14181, 14437, 14693, 24933, 25189, 25445, 25701, 25957, 26213, 12390, 12646,
12902, 13158, 13414, 13670, 13926, 14182, 14438, 14694, 24934, 25190, 25446,
25702, 25958, 26214};
return hex_char_pairs;
}
inline
void init_hex_char_pairs(const oid_t& oid, uint16_t* data)
{
const uint8_t* bytes = oid.data();
const uint16_t* gHexCharPairs = get_hex_char_pairs(std::integral_constant<bool, jsoncons::endian::native == jsoncons::endian::big>());
data[0] = gHexCharPairs[bytes[0]];
data[1] = gHexCharPairs[bytes[1]];
data[2] = gHexCharPairs[bytes[2]];
data[3] = gHexCharPairs[bytes[3]];
data[4] = gHexCharPairs[bytes[4]];
data[5] = gHexCharPairs[bytes[5]];
data[6] = gHexCharPairs[bytes[6]];
data[7] = gHexCharPairs[bytes[7]];
data[8] = gHexCharPairs[bytes[8]];
data[9] = gHexCharPairs[bytes[9]];
data[10] = gHexCharPairs[bytes[10]];
data[11] = gHexCharPairs[bytes[11]];
}
} // namsepace detail
template <typename StringT>
inline
void to_string(const oid_t& oid, StringT& s)
{
s.resize(24);
detail::init_hex_char_pairs(oid, reinterpret_cast<uint16_t*>(&s[0]));
}
} // namespace bson
} // namespace jsoncons
#endif
|