Enable streaming tarball download

Also add a non-compressed tar option

1 files changed, 40 insertions, 0 deletions

diff --git a/src/pipe.rs b/src/pipe.rs
new file mode 100644
index 0000000..710be1f
--- /dev/null
+++ b/src/pipe.rs
@@ -0,0 +1,40 @@
+use bytes::{Bytes, BytesMut};
+use futures::sink::{Sink, Wait};
+use futures::sync::mpsc::Sender;
+use std::io::{Error, ErrorKind, Result, Write};
+
+pub struct Pipe {
+    dest: Wait<Sender<Bytes>>,
+    bytes: BytesMut,
+}
+
+impl Pipe {
+    pub fn new(destination: Sender<Bytes>) -> Self {
+        Pipe {
+            dest: destination.wait(),
+            bytes: BytesMut::new(),
+        }
+    }
+}
+
+impl Drop for Pipe {
+    fn drop(&mut self) {
+        let _ = self.dest.close();
+    }
+}
+
+impl Write for Pipe {
+    fn write(&mut self, buf: &[u8]) -> Result<usize> {
+        self.bytes.extend_from_slice(buf);
+        match self.dest.send(self.bytes.take().into()) {
+            Ok(_) => Ok(buf.len()),
+            Err(e) => Err(Error::new(ErrorKind::UnexpectedEof, e)),
+        }
+    }
+
+    fn flush(&mut self) -> Result<()> {
+        self.dest
+            .flush()
+            .map_err(|e| Error::new(ErrorKind::UnexpectedEof, e))
+    }
+}