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stays unmodified regardless + value_hash: String, + compile_time: String, +} + fn main() -> Result<(), Box> { let out_dir = env::var("OUT_DIR")?; - let dest_path = Path::new(&out_dir).join("long_string.txt"); + let dest_path = Path::new(&out_dir).join("key.json"); let mut f = BufWriter::new(File::create(&dest_path)?); - let long_string = "abc".repeat(100); - write!(f, "{}", long_string)?; + let compile_time = chrono::Utc::now().to_rfc3339(); + let value = "Hello, world!"; + let value_hash = sha2::Sha256::digest(value.as_bytes()); + + let key_data = KeyData { + value, + value_hash: hex::encode(value_hash), + compile_time, + }; + + let json_data = serde_json::to_string(&key_data)?; + write!(f, "{}", json_data.to_string())?; Ok(()) } diff --git a/demo/src/main.rs b/demo/src/main.rs index 728158b..a22827b 100644 --- a/demo/src/main.rs +++ b/demo/src/main.rs @@ -1,5 +1,34 @@ -static LONG_STRING: &'static str = include_str!(concat!(env!("OUT_DIR"), "/long_string.txt")); +use serde::{Deserialize, Serialize}; +use sha2::Digest; + +// Shared between build.rs and main.rs +#[derive(Serialize, Deserialize, Debug)] +struct KeyData<'a> { + value: &'a str, + value_hash: String, + compile_time: String, +} + +static KEY: &'static str = include_str!(concat!(env!("OUT_DIR"), "/key.json")); fn main() { - println!("This package was compiled at {}", LONG_STRING); + let key_data: KeyData = serde_json::from_str(KEY).unwrap(); + + // Print the key data + let args: Vec = std::env::args().collect(); + if args.contains(&"--help".to_string()) { + println!("Usage: {} [--json] [--help]", args[0]); + println!("--json: Print the key data as JSON"); + println!("--help: Print this help message"); + return; + } else if args.contains(&"--json".to_string()) { + println!("{}", serde_json::to_string_pretty(&key_data).unwrap()); + return; + } + + // Check the hash of the value + let value_hash = sha2::Sha256::digest(key_data.value.as_bytes()); + let hash_match = hex::encode(value_hash) == key_data.value_hash; + + println!("Hash match: {}", hash_match); }