use std::path::PathBuf;use crate::{ pack, store::{compound, loose},};/// Returned by [`compound::Store::at()`]#[derive(thiserror::Error, Debug)]#[allow(missing_docs)]pub enum Error { #[error("The objects directory at '{0}' is not an accessible directory")] Inaccessible(PathBuf), #[error(transparent)] Pack(#[from] pack::bundle::init::Error), #[error(transparent)] Alternate(#[from] Box<crate::alternate::Error>),}/// Instantiationimpl compound::Store { /// Returns a compound database as initialized from the given git `objects_directory`, commonly `.git/objects`. /// /// Only loose and packed objects will be considered. See the [linked Db][crate::store::linked::Store] for a database with /// support for _git alternates_, i.e. linking to other repositories. pub fn at(objects_directory: impl Into<PathBuf>) -> Result<compound::Store, Error> { let loose_objects = objects_directory.into(); if !loose_objects.is_dir() { return Err(Error::Inaccessible(loose_objects)); } let packs = match std::fs::read_dir(loose_objects.join("pack")) { Ok(entries) => { let mut packs_and_sizes = entries .filter_map(Result::ok) .filter_map(|e| e.metadata().map(|md| (e.path(), md)).ok()) .filter(|(_, md)| md.file_type().is_file()) .filter(|(p, _)| p.extension().unwrap_or_default() == "idx") // TODO: make this configurable, git for instance sorts by modification date // https://github.com/libgit2/libgit2/blob/main/src/odb_pack.c#L41-L158 .enumerate() .map(|(idx, (p, md))| { pack::Bundle::at(p).map(|mut b| { ( { // don't rely on crc32 for producing non-clashing ids. It's the kind of bug we don't want b.pack.id = idx as u32; b }, md.len(), ) }) }) .collect::<Result<Vec<_>, _>>()?; packs_and_sizes.sort_by_key(|e| e.1); packs_and_sizes.into_iter().rev().map(|(b, _)| b).collect() } Err(_) => Vec::new(), }; Ok(compound::Store { loose: loose::Store::at(loose_objects), bundles: packs, }) }}
use std::path::PathBuf;
use crate::{
pack,
store::{compound, loose},
};
/// Returned by [`compound::Store::at()`]
#[derive(thiserror::Error, Debug)]
#[allow(missing_docs)]
pub enum Error {
#[error("The objects directory at '{0}' is not an accessible directory")]
Inaccessible(PathBuf),
#[error(transparent)]
Pack(#[from] pack::bundle::init::Error),
#[error(transparent)]
Alternate(#[from] Box<crate::alternate::Error>),
}
/// Instantiation
impl compound::Store {
/// Returns a compound database as initialized from the given git `objects_directory`, commonly `.git/objects`.
///
/// Only loose and packed objects will be considered. See the [linked Db][crate::store::linked::Store] for a database with
/// support for _git alternates_, i.e. linking to other repositories.
pub fn at(objects_directory: impl Into<PathBuf>) -> Result<compound::Store, Error> {
let loose_objects = objects_directory.into();
if !loose_objects.is_dir() {
return Err(Error::Inaccessible(loose_objects));
}
let packs = match std::fs::read_dir(loose_objects.join("pack")) {
Ok(entries) => {
let mut packs_and_sizes = entries
.filter_map(Result::ok)
.filter_map(|e| e.metadata().map(|md| (e.path(), md)).ok())
.filter(|(_, md)| md.file_type().is_file())
.filter(|(p, _)| p.extension().unwrap_or_default() == "idx")
// TODO: make this configurable, git for instance sorts by modification date
// https://github.com/libgit2/libgit2/blob/main/src/odb_pack.c#L41-L158
.enumerate()
.map(|(idx, (p, md))| {
pack::Bundle::at(p).map(|mut b| {
(
{
// don't rely on crc32 for producing non-clashing ids. It's the kind of bug we don't want
b.pack.id = idx as u32;
b
},
md.len(),
)
})
})
.collect::<Result<Vec<_>, _>>()?;
packs_and_sizes.sort_by_key(|e| e.1);
packs_and_sizes.into_iter().rev().map(|(b, _)| b).collect()
}
Err(_) => Vec::new(),
};
Ok(compound::Store {
loose: loose::Store::at(loose_objects),
bundles: packs,
})
}
}