rustywallet_export/
hex_export.rs

1//! Hex export functions.
2
3use crate::types::HexOptions;
4use rustywallet_keys::prelude::PrivateKey;
5
6/// Export a private key to hex format.
7///
8/// # Example
9///
10/// ```rust
11/// use rustywallet_export::{export_hex, HexOptions};
12/// use rustywallet_keys::prelude::PrivateKey;
13///
14/// let key = PrivateKey::random();
15///
16/// // Default: lowercase, no prefix
17/// let hex = export_hex(&key, HexOptions::new());
18/// assert_eq!(hex.len(), 64);
19///
20/// // With 0x prefix
21/// let hex = export_hex(&key, HexOptions::new().with_prefix(true));
22/// assert!(hex.starts_with("0x"));
23/// assert_eq!(hex.len(), 66);
24///
25/// // Uppercase
26/// let hex = export_hex(&key, HexOptions::new().with_uppercase(true));
27/// assert!(hex.chars().all(|c| !c.is_ascii_lowercase() || !c.is_alphabetic()));
28/// ```
29pub fn export_hex(key: &PrivateKey, options: HexOptions) -> String {
30    let bytes = key.to_bytes();
31    
32    let hex = if options.uppercase {
33        bytes.iter().map(|b| format!("{:02X}", b)).collect::<String>()
34    } else {
35        bytes.iter().map(|b| format!("{:02x}", b)).collect::<String>()
36    };
37    
38    if options.prefix {
39        format!("0x{}", hex)
40    } else {
41        hex
42    }
43}
44
45#[cfg(test)]
46mod tests {
47    use super::*;
48    
49    #[test]
50    fn test_export_hex_default() {
51        let key = PrivateKey::random();
52        let hex = export_hex(&key, HexOptions::new());
53        assert_eq!(hex.len(), 64);
54        assert!(hex.chars().all(|c| c.is_ascii_hexdigit()));
55    }
56    
57    #[test]
58    fn test_export_hex_with_prefix() {
59        let key = PrivateKey::random();
60        let hex = export_hex(&key, HexOptions::new().with_prefix(true));
61        assert!(hex.starts_with("0x"));
62        assert_eq!(hex.len(), 66);
63    }
64    
65    #[test]
66    fn test_export_hex_uppercase() {
67        let key = PrivateKey::random();
68        let hex = export_hex(&key, HexOptions::new().with_uppercase(true));
69        assert!(hex.chars().filter(|c| c.is_alphabetic()).all(|c| c.is_uppercase()));
70    }
71    
72    #[test]
73    fn test_export_hex_roundtrip() {
74        let key = PrivateKey::random();
75        let hex = export_hex(&key, HexOptions::new());
76        let recovered = PrivateKey::from_hex(&hex).unwrap();
77        assert_eq!(key.to_bytes(), recovered.to_bytes());
78    }
79}
rustywallet_export/hex_export.rs

rustywallet_export/
hex_export.rs
