Update to parity-scale-codec (#3232)

* WIP: update codec

* WIP

* compiling

* WIP

* rename parity-scale-codec to codec

* WIP

* fix

* remove old comments

* use published crates

* fix expected error msg

* bump version

* fmt and fix

* remove old comment

* fix wrong decoding impl

* implement encode like for structures

* undo removal of old pending changes

* trailingzeroinput

* Apply suggestions from code review

Co-Authored-By: Bastian Köcher <bkchr@users.noreply.github.com>
Co-Authored-By: DemiMarie-parity <48690212+DemiMarie-parity@users.noreply.github.com>

* update codec

* fmt

* version is 1.0.0

* show more error

* fmt

substrate/core/cli/src/lib.rs

@@ -37,8 +37,8 @@ use network::{
 use primitives::H256;
 
 use std::{
-	io::{Write, Read, stdin, stdout, ErrorKind}, iter, fs::{self, File}, net::{Ipv4Addr, SocketAddr},
-	path::{Path, PathBuf}, str::FromStr,
+	io::{Write, Read, Seek, Cursor, stdin, stdout, ErrorKind}, iter, fs::{self, File},
+	net::{Ipv4Addr, SocketAddr}, path::{Path, PathBuf}, str::FromStr,
 };
 
 use names::{Generator, Name};
@@ -628,6 +628,11 @@ where
 	).map_err(Into::into)
 }
 
+/// Internal trait used to cast to a dynamic type that implements Read and Seek.
+trait ReadPlusSeek: Read + Seek {}
+
+impl<T: Read + Seek> ReadPlusSeek for T {}
+
 fn import_blocks<F, E, S>(
 	cli: ImportBlocksCmd,
 	spec_factory: S,
@@ -646,9 +651,13 @@ where
 		..Default::default()
 	};
 
-	let file: Box<dyn Read> = match cli.input {
+	let file: Box<dyn ReadPlusSeek> = match cli.input {
 		Some(filename) => Box::new(File::open(filename)?),
-		None => Box::new(stdin()),
+		None => {
+			let mut buffer = Vec::new();
+			stdin().read_to_end(&mut buffer)?;
+			Box::new(Cursor::new(buffer))
+		},
 	};
 
 	let fut = service::chain_ops::import_blocks::<F, _, _>(config, exit.into_exit(), file)?;