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-rw-r--r--src/read.rs105
1 files changed, 0 insertions, 105 deletions
diff --git a/src/read.rs b/src/read.rs
deleted file mode 100644
index b9dc5ef..0000000
--- a/src/read.rs
+++ /dev/null
@@ -1,105 +0,0 @@
-use crate::errors::Error;
-use futures::{Async, Stream};
-use hyper::Chunk;
-use std::{
- cmp,
- io::{self, Read},
-};
-use tokio_io::AsyncRead;
-
-/*
- * The following is taken from
- * https://github.com/ferristseng/rust-ipfs-api/blob/master/ipfs-api/src/read.rs.
- * TODO: see with upstream author to move to a separate crate.
- */
-
-/// The state of a stream returning Chunks.
-///
-enum ReadState {
- /// A chunk is ready to be read from.
- ///
- Ready(Chunk, usize),
-
- /// The next chunk isn't ready yet.
- ///
- NotReady,
-}
-
-/// Reads from a stream of chunks asynchronously.
-///
-pub struct StreamReader<S> {
- stream: S,
- state: ReadState,
-}
-
-impl<S> StreamReader<S>
-where
- S: Stream<Item = Chunk, Error = Error>,
-{
- #[inline]
- pub fn new(stream: S) -> StreamReader<S> {
- StreamReader {
- stream,
- state: ReadState::NotReady,
- }
- }
-}
-
-impl<S> Read for StreamReader<S>
-where
- S: Stream<Item = Chunk, Error = Error>,
-{
- fn read(
- &mut self,
- buf: &mut [u8],
- ) -> io::Result<usize> {
- loop {
- let ret;
-
- match self.state {
- // Stream yielded a Chunk to read.
- //
- ReadState::Ready(ref mut chunk, ref mut pos) => {
- let chunk_start = *pos;
- let len = cmp::min(buf.len(), chunk.len() - chunk_start);
- let chunk_end = chunk_start + len;
-
- buf[..len].copy_from_slice(&chunk[chunk_start..chunk_end]);
- *pos += len;
-
- if *pos == chunk.len() {
- ret = len;
- } else {
- return Ok(len);
- }
- }
- // Stream is not ready, and a Chunk needs to be read.
- //
- ReadState::NotReady => {
- match self.stream.poll() {
- // Polling stream yielded a Chunk that can be read from.
- //
- Ok(Async::Ready(Some(chunk))) => {
- self.state = ReadState::Ready(chunk, 0);
-
- continue;
- }
- // Polling stream yielded EOF.
- //
- Ok(Async::Ready(None)) => return Ok(0),
- // Stream could not be read from.
- //
- Ok(Async::NotReady) => return Err(io::ErrorKind::WouldBlock.into()),
- Err(e) => return Err(io::Error::new(io::ErrorKind::Other, e.to_string())),
- }
- }
- }
-
- self.state = ReadState::NotReady;
-
- return Ok(ret);
- }
- }
-}
-
-impl<S> AsyncRead for StreamReader<S> where S: Stream<Item = Chunk, Error = Error> {}