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//! An object database storing each object in a zlib compressed file with its hash in the path
/// The maximum size that an object header can have. `git2` says 64, and `git` says 32 but also mentions it can be larger.
const HEADER_MAX_SIZE: usize = 64;
use std::path::{Path, PathBuf};
use gix_features::fs;
/// A database for reading and writing objects to disk, one file per object.
#[derive(Clone, PartialEq, Eq)]
pub struct Store {
/// The directory in which objects are stored, containing 256 folders representing the hashes first byte.
pub(crate) path: PathBuf,
/// The kind of hash we should assume during iteration and when writing new objects.
pub(crate) object_hash: gix_hash::Kind,
}
/// Initialization
impl Store {
/// Initialize the Db with the `objects_directory` containing the hexadecimal first byte subdirectories, which in turn
/// contain all loose objects.
///
/// In a git repository, this would be `.git/objects`.
///
/// The `object_hash` determines which hash to use when writing, finding or iterating objects.
pub fn at(objects_directory: impl Into<PathBuf>, object_hash: gix_hash::Kind) -> Store {
Store {
path: objects_directory.into(),
object_hash,
}
}
/// Return the path to our `objects` directory.
pub fn path(&self) -> &Path {
&self.path
}
/// Return the kind of hash we would iterate and write.
pub fn object_hash(&self) -> gix_hash::Kind {
self.object_hash
}
}
fn hash_path(id: &gix_hash::oid, mut root: PathBuf) -> PathBuf {
let mut hex = gix_hash::Kind::hex_buf();
let hex_len = id.hex_to_buf(hex.as_mut());
let buf = std::str::from_utf8(&hex[..hex_len]).expect("ascii only in hex");
root.push(&buf[..2]);
root.push(&buf[2..]);
root
}
///
pub mod find;
///
pub mod iter;
///
pub mod verify;
/// The type for an iterator over `Result<gix_hash::ObjectId, Error>)`
pub struct Iter {
inner: fs::walkdir::DirEntryIter,
hash_hex_len: usize,
}
///
pub mod write;
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