Makefile, libdelimit: update for including libdelimit in utilities

Makefile

@@ -30,7 +30,8 @@ SYSEXITS != printf '\043include <sysexits.h>\n' | cpp -M - | tr ' ' '\n' \
 
 CC ?= cc
 RUSTC ?= rustc
-RUSTFLAGS += --extern getopt=build/o/libgetopt.rlib \
+RUSTFLAGS += --extern delimit=build/o/libdelimit.rlib \
+	--extern getopt=build/o/libgetopt.rlib \
 	--extern strerror=build/o/libstrerror.rlib \
 	--extern sysexits=build/o/libsysexits.rlib
 CFLAGS += -I$(SYSEXITS)
@@ -88,8 +89,12 @@ docs: docs/ build
 include $(OS_INCLUDE)
 
 .PHONY: rustlibs
-rustlibs: build/o/libgetopt.rlib build/o/libstrerror.rlib \
+rustlibs: build/o/libdelimit.rlib build/o/libgetopt.rlib \
-	 build/o/libsysexits.rlib $(OSLIB)
+	 build/o/libstrerror.rlib build/o/libsysexits.rlib $(OSLIB)
+
+build/o/libdelimit.rlib: build src/libdelimit.rs
+	$(RUSTC) $(RUSTFLAGS) --crate-type=lib --crate-name=delimit \
+		-o $@ src/libdelimit.rs
 
 build/o/libgetopt.rlib: build src/libgetopt.rs
 	$(RUSTC) $(RUSTFLAGS) --crate-type=lib --crate-name=getopt \

src/libdelimit.rs

@@ -17,21 +17,20 @@
  */
 
 use std::{
-    io::{ Read, Result, stdin },
+    io::{ Read, Result },
     mem::self,
-    process::ExitCode,
 };
 
 const BUFFER_SIZE: usize = 4096;
 
-struct Delimited {
+pub struct Delimited {
     stream: Box<dyn Read>,
     delimiter: Vec<u8>,
     buffer: Vec<u8>
 }
 
 impl Delimited {
-    fn new(stream: Box<dyn Read>, delimiter: &[u8]) -> Self {
+	pub fn new(stream: Box<dyn Read>, delimiter: &[u8]) -> Self {
         Delimited {
             stream,
             delimiter: delimiter.to_vec(),