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-rw-r--r--iroh-car/src/reader.rs99
1 files changed, 0 insertions, 99 deletions
diff --git a/iroh-car/src/reader.rs b/iroh-car/src/reader.rs
deleted file mode 100644
index c0209be..0000000
--- a/iroh-car/src/reader.rs
+++ /dev/null
@@ -1,99 +0,0 @@
-use cid::Cid;
-use futures::Stream;
-use tokio::io::AsyncRead;
-
-use crate::{
- error::Error,
- header::CarHeader,
- util::{ld_read, read_node},
-};
-
-/// Reads CAR files that are in a BufReader
-pub struct CarReader<R> {
- reader: R,
- header: CarHeader,
- buffer: Vec<u8>,
-}
-
-impl<R> CarReader<R>
-where
- R: AsyncRead + Send + Unpin,
-{
- /// Creates a new CarReader and parses the CarHeader
- pub async fn new(mut reader: R) -> Result<Self, Error> {
- let mut buffer = Vec::new();
-
- match ld_read(&mut reader, &mut buffer).await? {
- Some(buf) => {
- let header = CarHeader::decode(buf)?;
-
- Ok(CarReader {
- reader,
- header,
- buffer,
- })
- }
- None => Err(Error::Parsing(
- "failed to parse uvarint for header".to_string(),
- )),
- }
- }
-
- /// Returns the header of this car file.
- pub fn header(&self) -> &CarHeader {
- &self.header
- }
-
- /// Returns the next IPLD Block in the buffer
- pub async fn next_block(&mut self) -> Result<Option<(Cid, Vec<u8>)>, Error> {
- read_node(&mut self.reader, &mut self.buffer).await
- }
-
- pub fn stream(self) -> impl Stream<Item = Result<(Cid, Vec<u8>), Error>> {
- futures::stream::try_unfold(self, |mut this| async move {
- let maybe_block = read_node(&mut this.reader, &mut this.buffer).await?;
- Ok(maybe_block.map(|b| (b, this)))
- })
- }
-}
-
-#[cfg(test)]
-mod tests {
- use std::io::Cursor;
-
- use cid::Cid;
- use futures::TryStreamExt;
- use ipld_cbor::DagCborCodec;
- use multihash::MultihashDigest;
-
- use crate::{header::CarHeaderV1, writer::CarWriter};
-
- use super::*;
-
- #[tokio::test]
- async fn car_write_read() {
- let digest_test = multihash::Code::Blake2b256.digest(b"test");
- let cid_test = Cid::new_v1(DagCborCodec.into(), digest_test);
-
- let digest_foo = multihash::Code::Blake2b256.digest(b"foo");
- let cid_foo = Cid::new_v1(DagCborCodec.into(), digest_foo);
-
- let header = CarHeader::V1(CarHeaderV1::from(vec![cid_foo]));
-
- let mut buffer = Vec::new();
- let mut writer = CarWriter::new(header, &mut buffer);
- writer.write(cid_test, b"test").await.unwrap();
- writer.write(cid_foo, b"foo").await.unwrap();
- writer.finish().await.unwrap();
-
- let reader = Cursor::new(&buffer);
- let car_reader = CarReader::new(reader).await.unwrap();
- let files: Vec<_> = car_reader.stream().try_collect().await.unwrap();
-
- assert_eq!(files.len(), 2);
- assert_eq!(files[0].0, cid_test);
- assert_eq!(files[0].1, b"test");
- assert_eq!(files[1].0, cid_foo);
- assert_eq!(files[1].1, b"foo");
- }
-}