summaryrefslogtreecommitdiffstats
path: root/iroh-car/src/header.rs
diff options
context:
space:
mode:
Diffstat (limited to 'iroh-car/src/header.rs')
-rw-r--r--iroh-car/src/header.rs104
1 files changed, 0 insertions, 104 deletions
diff --git a/iroh-car/src/header.rs b/iroh-car/src/header.rs
deleted file mode 100644
index c004e35..0000000
--- a/iroh-car/src/header.rs
+++ /dev/null
@@ -1,104 +0,0 @@
-use cid::Cid;
-use ipld::codec::Codec;
-use ipld_cbor::DagCborCodec;
-
-use crate::error::Error;
-
-/// A car header.
-#[derive(Debug, Clone, PartialEq, Eq)]
-#[non_exhaustive]
-pub enum CarHeader {
- V1(CarHeaderV1),
-}
-
-impl CarHeader {
- pub fn new_v1(roots: Vec<Cid>) -> Self {
- Self::V1(roots.into())
- }
-
- pub fn decode(buffer: &[u8]) -> Result<Self, Error> {
- let header: CarHeaderV1 = DagCborCodec
- .decode(buffer)
- .map_err(|e| Error::Parsing(e.to_string()))?;
-
- if header.roots.is_empty() {
- return Err(Error::Parsing("empty CAR file".to_owned()));
- }
-
- if header.version != 1 {
- return Err(Error::InvalidFile(
- "Only CAR file version 1 is supported".to_string(),
- ));
- }
-
- Ok(CarHeader::V1(header))
- }
-
- pub fn encode(&self) -> Result<Vec<u8>, Error> {
- match self {
- CarHeader::V1(ref header) => {
- let res = DagCborCodec.encode(header)?;
- Ok(res)
- }
- }
- }
-
- pub fn roots(&self) -> &[Cid] {
- match self {
- CarHeader::V1(header) => &header.roots,
- }
- }
-
- pub fn version(&self) -> u64 {
- match self {
- CarHeader::V1(_) => 1,
- }
- }
-}
-
-/// CAR file header version 1.
-#[derive(Debug, Clone, Default, ipld::DagCbor, PartialEq, Eq)]
-pub struct CarHeaderV1 {
- #[ipld]
- pub roots: Vec<Cid>,
- #[ipld]
- pub version: u64,
-}
-
-impl CarHeaderV1 {
- /// Creates a new CAR file header
- pub fn new(roots: Vec<Cid>, version: u64) -> Self {
- Self { roots, version }
- }
-}
-
-impl From<Vec<Cid>> for CarHeaderV1 {
- fn from(roots: Vec<Cid>) -> Self {
- Self { roots, version: 1 }
- }
-}
-
-#[cfg(test)]
-mod tests {
- use ipld::codec::{Decode, Encode};
- use ipld_cbor::DagCborCodec;
- use multihash::MultihashDigest;
-
- use super::*;
-
- #[test]
- fn symmetric_header_v1() {
- let digest = multihash::Code::Blake2b256.digest(b"test");
- let cid = Cid::new_v1(DagCborCodec.into(), digest);
-
- let header = CarHeaderV1::from(vec![cid]);
-
- let mut bytes = Vec::new();
- header.encode(DagCborCodec, &mut bytes).unwrap();
-
- assert_eq!(
- CarHeaderV1::decode(DagCborCodec, &mut std::io::Cursor::new(&bytes)).unwrap(),
- header
- );
- }
-}