gobby_code/index/
hasher.rs

1//! Content hashing for incremental indexing.
2//! Ports logic from src/gobby/code_index/hasher.py.
3
4use std::path::Path;
5
6/// SHA-256 hash of entire file contents.
7pub fn file_content_hash(path: &Path) -> anyhow::Result<String> {
8    Ok(gobby_core::indexing::file_content_hash(path)?)
9}
10
11/// SHA-256 hash of in-memory file contents.
12pub fn content_hash(source: &[u8]) -> String {
13    gobby_core::indexing::content_hash(source)
14}
15
16/// SHA-256 hash of a byte slice (symbol source).
17pub fn symbol_content_hash(source: &[u8], start: usize, end: usize) -> anyhow::Result<String> {
18    let slice = source.get(start..end).ok_or_else(|| {
19        anyhow::anyhow!(
20            "invalid byte range {}..{} for source len {}",
21            start,
22            end,
23            source.len()
24        )
25    })?;
26    Ok(gobby_core::indexing::content_hash(slice))
27}
28
29#[cfg(test)]
30mod tests {
31    use super::*;
32
33    #[test]
34    fn file_content_hash_delegates_to_gobby_core() {
35        let tmp = tempfile::NamedTempFile::new().expect("tempfile");
36        std::fs::write(tmp.path(), b"hash me\n").expect("write file");
37
38        let actual = file_content_hash(tmp.path()).expect("hash via wrapper");
39        let expected =
40            gobby_core::indexing::file_content_hash(tmp.path()).expect("hash via gobby-core");
41        assert_eq!(actual, expected);
42
43        let source = include_str!("hasher.rs");
44        let delegate = ["gobby_core", "::indexing::file_content_hash"].concat();
45        let local_buffer = format!("let mut buf = [0u8; {}]", 64 * 1024);
46        assert!(source.contains(&delegate));
47        assert!(!source.contains(&local_buffer));
48    }
49
50    #[test]
51    fn content_hash_delegates_to_gobby_core() {
52        let source = b"hash me from memory\n";
53
54        assert_eq!(
55            content_hash(source),
56            gobby_core::indexing::content_hash(source)
57        );
58    }
59}
gobby_code/index/hasher.rs

gobby_code/index/
hasher.rs
