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@@ -94,13 +94,81 @@ The library uses the following mapping from JSON values types to UBJSON types ac
??? example "Example: serialize JSON values to UBJSON, with and without size/type optimization"
```cpp
--8<-- "examples/to_ubjson.cpp"
#include <iostream>
#include <iomanip>
#include <nlohmann/json.hpp>
using json = nlohmann::json;
using namespace nlohmann::literals;
// function to print UBJSON's diagnostic format
void print_byte(uint8_t byte)
{
if (32 < byte and byte < 128)
{
std::cout << (char)byte;
}
else
{
std::cout << (int)byte;
}
}
int main()
{
// create a JSON value
json j = R"({"compact": true, "schema": false})"_json;
// serialize it to UBJSON
std::vector<std::uint8_t> v = json::to_ubjson(j);
// print the vector content
for (auto& byte : v)
{
print_byte(byte);
}
std::cout << std::endl;
// create an array of numbers
json array = {1, 2, 3, 4, 5, 6, 7, 8};
// serialize it to UBJSON using default representation
std::vector<std::uint8_t> v_array = json::to_ubjson(array);
// serialize it to UBJSON using size optimization
std::vector<std::uint8_t> v_array_size = json::to_ubjson(array, true);
// serialize it to UBJSON using type optimization
std::vector<std::uint8_t> v_array_size_and_type = json::to_ubjson(array, true, true);
// print the vector contents
for (auto& byte : v_array)
{
print_byte(byte);
}
std::cout << std::endl;
for (auto& byte : v_array_size)
{
print_byte(byte);
}
std::cout << std::endl;
for (auto& byte : v_array_size_and_type)
{
print_byte(byte);
}
std::cout << std::endl;
}
```
Output:
```c
--8<-- "examples/to_ubjson.output"
{i7compactTi6schemaF}
[i1i2i3i4i5i6i7i8]
[#i8i1i2i3i4i5i6i7i8
[$i#i812345678
```
## Deserialization
@@ -145,11 +213,35 @@ The library maps UBJSON types to JSON value types as follows:
??? example "Example: deserialize a JSON value from UBJSON"
```cpp
--8<-- "examples/from_ubjson.cpp"
#include <iostream>
#include <iomanip>
#include <nlohmann/json.hpp>
using json = nlohmann::json;
int main()
{
// create byte vector
std::vector<std::uint8_t> v = {0x7B, 0x69, 0x07, 0x63, 0x6F, 0x6D, 0x70, 0x61,
0x63, 0x74, 0x54, 0x69, 0x06, 0x73, 0x63, 0x68,
0x65, 0x6D, 0x61, 0x69, 0x00, 0x7D
};
// deserialize it with UBJSON
json j = json::from_ubjson(v);
// print the deserialized JSON value
std::cout << std::setw(2) << j << std::endl;
}
```
Output:
```json
--8<-- "examples/from_ubjson.output"
{
"compact": true,
"schema": 0
}
```