codescout 0.14.0

High-performance coding agent toolkit MCP server
Documentation 
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use sha2::{Digest, Sha256};

/// Stable artifact id: sha256("{repo}\n{rel_path}") hex, truncated to 16 chars.
pub fn artifact_id(repo: &str, rel_path: &str) -> String {
    let mut h = Sha256::new();
    h.update(repo.as_bytes());
    h.update(b"\n");
    h.update(rel_path.as_bytes());
    let hex = format!("{:x}", h.finalize());
    hex[..16].into()
}
/// Stable artifact id: sha256(abs_path) hex, truncated to 16 chars.
///
/// The abs_path is forward-slash-normalized before hashing so paths derived
/// from native joins (`root.join("docs/foo.md")` → mixed slashes on Windows)
/// produce the same id as paths derived from forward-slash strings.
pub fn artifact_id_from_abs(abs_path: &std::path::Path) -> String {
    let mut h = Sha256::new();
    let normalized = crate::util::fs::RepoPath::from(abs_path);
    h.update(normalized.as_str().as_bytes());
    let hex = format!("{:x}", h.finalize());
    hex[..16].into()
}

#[cfg(test)]
mod tests {
    use super::*;

    #[test]
    fn deterministic() {
        assert_eq!(artifact_id("r", "p.md"), artifact_id("r", "p.md"));
    }

    #[test]
    fn different_inputs_different_ids() {
        assert_ne!(artifact_id("r1", "p.md"), artifact_id("r2", "p.md"));
        assert_ne!(artifact_id("r", "a.md"), artifact_id("r", "b.md"));
    }

    #[test]
    fn sixteen_hex_chars() {
        let id = artifact_id("r", "p.md");
        assert_eq!(id.len(), 16);
        assert!(id.chars().all(|c| c.is_ascii_hexdigit()));
    }
}