Convert between Javascript object and byte array
npm install object-byte-convertershell
npm install object-byte-converter --save
`
Example
To serialize/deserialize C struct below
`c
struct struct2 {
int field6;
long int field7;
};
struct struct1 {
int field1;
unsigned char field2;
char field3[30];
long int field4[10];
struct2 field5;
};
`
Create a typedef...
`js
const example_typedefs = {
_settings_: {
// CPU endianess (Little endian if not specified)
isBigEndian: true
},
// Typedef for struct1
struct1: {
// int field1;
field1: {
type: "int", // Signed integer e.g. char, short, int, long
size: 2 // Number of byte
},
// unsigned char field2;
field2: {
type: "uint", // Unsigned integer e.g. unsigned char, ...
size: 1
},
// char field3[30]
field3: {
type: "string", // String e.g. char[30]
size: 30 // Size of char array
},
// long int field4[10];
field4: {
type: "int",
size: 4,
isArray: true,
length: 10
},
// struct2 field5;
field5: {
type: "struct2",
size: 0 // size is not used for struct
}
},
// Typedef for struct2
struct2: {
// float field6;
field6: { type: "int", size: 2 },
// double field7
field7: { type: "int", size: 4 },
}
};
`
Serialization
`js
const data = {
field1: -10,
field2: 20,
field3: "Test",
field4: [ 1, 2, 3, 4, 5, 6, 7, 8, 9, 10],
field5: {
field6: -1,
field7: -1
}
};
const objectByteConverter = require('object-byte-converter');
let bytes = objectByteConverter.toByteArray(data, "struct1", example_typedefs);
`
Deserialization
`js
let obj = objectByteConverter.toObject(bytes, "struct1", example_typedefs);
``