alice.pds.demo.boltless.dev
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did:plc:3fwecdnvtcscjnrx2p4n7a…
1use std::path::{Path, PathBuf};
2
3use crate::Bundle;
4
5/// Returned by [`Bundle::at()`]
6#[derive(thiserror::Error, Debug)]
7#[allow(missing_docs)]
8pub enum Error {
9 #[error("An 'idx' extension is expected of an index file: '{0}'")]
10 InvalidPath(PathBuf),
11 #[error(transparent)]
12 Pack(#[from] crate::data::header::decode::Error),
13 #[error(transparent)]
14 Index(#[from] crate::index::init::Error),
15}
16
17/// Initialization
18impl Bundle {
19 /// Create a `Bundle` from `path`, which is either a pack file _(*.pack)_ or an index file _(*.idx)_.
20 ///
21 /// The corresponding complementary file is expected to be present.
22 ///
23 /// The `object_hash` is a way to read (and write) the same file format with different hashes, as the hash kind
24 /// isn't stored within the file format itself.
25 pub fn at(path: impl AsRef<Path>, object_hash: gix_hash::Kind) -> Result<Self, Error> {
26 Self::at_inner(path.as_ref(), object_hash)
27 }
28
29 fn at_inner(path: &Path, object_hash: gix_hash::Kind) -> Result<Self, Error> {
30 let ext = path
31 .extension()
32 .and_then(std::ffi::OsStr::to_str)
33 .ok_or_else(|| Error::InvalidPath(path.to_owned()))?;
34 Ok(match ext {
35 "idx" => Self {
36 index: crate::index::File::at(path, object_hash)?,
37 pack: crate::data::File::at(path.with_extension("pack"), object_hash)?,
38 },
39 "pack" => Self {
40 pack: crate::data::File::at(path, object_hash)?,
41 index: crate::index::File::at(path.with_extension("idx"), object_hash)?,
42 },
43 _ => return Err(Error::InvalidPath(path.to_owned())),
44 })
45 }
46}