???????Demo
???????????????￡??????????????????????????github???????cereal????????????????????

 

1 #include <iostream>
2 #include <fstream>
3 #include <string>
4 #include "cereal/archives/binary.hpp"
5 #include "cereal/archives/xml.hpp"
6 #include "cereal/archives/json.hpp"
7 #include "cereal/types/unordered_map.hpp"
8 #include "cereal/types/memory.hpp"
9 #include "cereal/types/string.hpp"  //????????????????????????std::string???л?????????????????https://github.com/USCiLab/cereal/issues/58
10
11 using namespace std;
12
13 struct MyRecord
14 {
15     int x?? y;
16     float z;
17
18     template <class Archive>
19     void serialize(Archive & ar)
20     {
21         ar(x?? y?? z);
22     }
23
24     friend std::ostream& operator<<(std::ostream& os?? const MyRecord& mr);
25 };
26
27 std::ostream& operator<<(std::ostream& os?? const MyRecord& mr)
28 {
29     os << "MyRecord(" << mr.x << "?? " << mr.y << "??" << mr.z << ") ";
30     return os;
31 }
32
33 struct SomeData
34 {
35     int32_t id;
36     std::shared_ptr<std::unordered_map<uint32_t?? MyRecord>> data;
37
38     SomeData(int32_t id_=0) : id(id_)?? data(new std::unordered_map<uint32_t?? MyRecord>)
39     {
40
41     }
42
43     template <class Archive>
44     void save(Archive & ar) const
45     {
46         ar(id?? data);
47     }
48
49     template <class Archive>
50     void load(Archive & ar)
51     {
52         ar(id?? data);
53     }
54
55     void push(uint32_t?? const MyRecord& mr)
56     {
57         data->insert(std::make_pair(100?? mr));
58     }
59
60     void print()
61     {
62         std::cout << "ID : " << id << " ";
63         if (data->empty())
64             return;
65         for (auto& item : *data)
66         {
67             std::cout << item.first << " " << item.second << " ";
68         }
69     }
70 };
71
72 void Serialization_XML()
73 {
74     {
75         std::ofstream os("my.xml");
76
77         cereal::XMLOutputArchive archive(os);
78
79         int age = 26;
80         std::string name = "lizheng";
81
82         //#define CEREAL_NVP(T) ::cereal::make_nvp(#T?? T)
83         archive(CEREAL_NVP(age)?? cereal::make_nvp("Name"?? name));
84
85         //os.close();  //???????????????ofstream?????????л????д?????
86     }
87
88     {
89         std::ifstream is("my.xml");
90         cereal::XMLInputArchive archive(is);
91
92         int age;
93         std::string name;
94
95         archive(age?? name);
96         std::cout << "Age: " << age << " " << "Name: " << name << " ";
97     }
98 }
99
100 void Serialization_JSON()
101 {
102     {
103         std::ofstream os("my.json");
104         cereal::JSONOutputArchive archive(os);
105
106         int age = 26;
107         std::string name = "lizheng";
108
109         archive(CEREAL_NVP(age)?? cereal::make_nvp("Name"?? name));
110     }
111
112     {
113         std::ifstream is("my.json");
114         cereal::JSONInputArchive archive(is);
115
116         int age;
117         std::string name;
118
119         archive(age?? name);
120         std::cout << "Age: " << age << " " << "Name: " << name << " ";
121     }
122 }
123
124
125 void Serialization_Binary()
126 {
127     {
128         std::ofstream os("my.binary"?? std::ios::binary);
129         cereal::BinaryOutputArchive archive(os);
130
131         int age = 26;
132         std::string name = "lizheng";
133
134         archive(CEREAL_NVP(age)?? CEREAL_NVP(name));
135     }
136     {
137         std::ifstream is("my.binary"?? std::ios::binary);
138         cereal::BinaryInputArchive archive(is);
139
140         int age;
141         std::string name;
142
143         archive(age?? name);
144         std::cout << "Age: " << age << " " << "Name: " << name << " ";
145     }
146 }
147
148 void Serialization_Obj()
149 {
150     {
151         std::ofstream os("obj.cereal"?? std::ios::binary);
152         cereal::BinaryOutputArchive archive(os);
153
154         MyRecord mr = { 1?? 2?? 3.0 };
155
156         SomeData myData(1111);
157         myData.push(100?? mr);
158
159         archive(myData);
160     }
161     {
162         std::ifstream is("obj.cereal"?? std::ios::binary);
163         cereal::BinaryInputArchive archive(is);
164
165         SomeData myData;
166         archive(myData);
167         myData.print();
168     }
169 }
170
171
172 int main()
173 {
174     Serialization_XML();     std::cout << "---------------------- ";
175
176     Serialization_JSON();    std::cout << "---------------------- ";
177
178     Serialization_Binary();  std::cout << "---------------------- ";
179
180     Serialization_Obj();     std::cout << "---------------------- ";
181
182     getchar();
183     return 0;
184 }