copy a json file in rust

main.rs
use std::fs::{File};
use std::io::{Read, Write};
use serde::{Deserialize, Serialize};

// Define a struct that matches the keys/values of your JSON
#[derive(Debug, Deserialize, Serialize)]
struct MyData {
    key1: String,
    key2: i32,
    key3: bool,
}

fn main() -> std::io::Result<()> {
    // Open the source JSON file
    let mut file = File::open("source.json")?;

    // Read the contents of the file into a string
    let mut contents = String::new();
    file.read_to_string(&mut contents)?;

    // Deserialize the JSON into a struct
    let original_data: MyData = serde_json::from_str(&contents)?;

    // Serialize the struct into a new file
    let mut new_file = File::create("new.json")?;
    let serialized = serde_json::to_string(&original_data)?;
    new_file.write_all(serialized.as_bytes())?;

    Ok(())
}
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[dependencies]
serde = { version = "1.0", features = ["derive"] }
serde_json = "1.0"
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