0be354a920
Single-commit clean baseline after security scrub of niche-tells, project codenames, internal jargon, and contributor-email leaks. Contents: - 100 Rust crates (_primitives/_rust/) - 37 agent manifests (_manifests/) + generated specs (_generated/) - 67 user-invocable skills (skills/) - 33 hooks (hooks/) - Composition blocks (_blocks/) - Documentation (docs/, README.md) - TS adapter packages (_ts_packages/) - Assembler (_assembler/) - Roles (_roles/) - Templates (_templates/) - Forgejo CI (.forgejo/) Author: Denis Parfionovich <info@greendragon.info> License: see LICENSE.
41 lines
1.1 KiB
Rust
41 lines
1.1 KiB
Rust
//! SHA-256 helper — stream file bytes without loading whole payload.
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//! Used by exporter (manifest hashes) and importer (post-extract verify).
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use sha2::{Digest, Sha256};
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use std::fs::File;
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use std::io::Read;
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use std::path::Path;
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const READ_BUF: usize = 64 * 1024;
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/// Hex-encode a 32-byte digest. Lowercase, no delimiters.
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pub fn hex(digest: &[u8]) -> String {
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let mut s = String::with_capacity(digest.len() * 2);
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for b in digest {
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s.push_str(&format!("{:02x}", b));
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}
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s
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}
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/// Hash bytes already in memory. Small helper for tests + manifest string.
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pub fn hash_bytes(bytes: &[u8]) -> String {
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let mut h = Sha256::new();
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h.update(bytes);
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hex(&h.finalize())
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}
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/// Stream a file through Sha256 in 64KB chunks. Error surfaces raw io;
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/// caller wraps with path context.
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pub fn hash_file(path: &Path) -> std::io::Result<String> {
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let mut f = File::open(path)?;
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let mut hasher = Sha256::new();
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let mut buf = vec![0u8; READ_BUF];
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loop {
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let n = f.read(&mut buf)?;
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if n == 0 {
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break;
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}
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hasher.update(&buf[..n]);
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}
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Ok(hex(&hasher.finalize()))
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}
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