use crate::pack;use std::{    convert::TryFrom,    path::{Path, PathBuf},}; mod locate;///pub mod write; mod verify {    use crate::pack;    use git_features::progress::Progress;     impl super::Bundle {        /// Similar to [`pack::index::File::verify_integrity()`] but more convenient to call as the presence of the        /// pack file is a given.        pub fn verify_integrity<C, P>(            &self,            verify_mode: pack::index::verify::Mode,            traversal: pack::index::traverse::Algorithm,            make_pack_lookup_cache: impl Fn() -> C + Send + Sync,            thread_limit: Option<usize>,            progress: Option<P>,        ) -> Result<            (git_hash::ObjectId, Option<pack::index::traverse::Outcome>, Option<P>),            pack::index::traverse::Error<pack::index::verify::Error>,        >        where            P: Progress,            C: pack::cache::DecodeEntry,        {            self.index.verify_integrity(                Some((&self.pack, verify_mode, traversal, make_pack_lookup_cache)),                thread_limit,                progress,            )        }    }} /// Returned by [`Bundle::at()`]#[derive(thiserror::Error, Debug)]#[allow(missing_docs)]pub enum Error {    #[error("An 'idx' extension is expected of an index file: '{0}'")]    InvalidPath(PathBuf),    #[error(transparent)]    Pack(#[from] pack::data::header::decode::Error),    #[error(transparent)]    Index(#[from] pack::index::init::Error),} /// A way to uniquely identify the location of an object within a pack bundle#[derive(PartialEq, Eq, Debug, Hash, Ord, PartialOrd, Clone)]pub(crate) struct Location {    /// The id of the pack containing the object    pub(crate) pack_id: u32,    /// The index at which the object can be fonud in the index file    pub(crate) index_file_id: u32,    /// The size of the entry of disk    pub(crate) entry_size: usize,} impl Location {    pub(crate) fn entry_range(&self, pack_offset: u64) -> pack::data::EntryRange {        pack_offset..pack_offset + self.entry_size as u64    }} /// A bundle of pack data and the corresponding pack indexpub struct Bundle {    /// The pack file corresponding to `index`    pub pack: pack::data::File,    /// The index file corresponding to `pack`    pub index: pack::index::File,} /// Initializationimpl Bundle {    /// Create a `Bundle` from `path`, which is either a pack file _(*.pack)_ or an index file _(*.idx)_.    ///    /// The corresponding complementary file is expected to be present.    /// Also available via [`Bundle::try_from()`].    pub fn at(path: impl AsRef<Path>) -> Result<Self, Error> {        Self::try_from(path.as_ref())    }} impl TryFrom<&Path> for Bundle {    type Error = Error;     fn try_from(path: &Path) -> Result<Self, Self::Error> {        let ext = path            .extension()            .and_then(|e| e.to_str())            .ok_or_else(|| Error::InvalidPath(path.to_owned()))?;        Ok(match ext {            "idx" => Self {                index: pack::index::File::at(path)?,                pack: pack::data::File::at(path.with_extension("pack"))?,            },            "pack" => Self {                pack: pack::data::File::at(path)?,                index: pack::index::File::at(path.with_extension("idx"))?,            },            _ => return Err(Error::InvalidPath(path.to_owned())),        })    }}