Fix buffer reading.

src/worker.rs

@@ -27,11 +27,8 @@ use std::fs;
 use std::io::Read;
 use std::boxed::Box;
 
-// Read 1KiB of the file at a time.
-static BLOCK_SIZE:usize = 1024;
-
 pub fn work(in_path:Option<&str>, out_path:Option<&str>) -> Result<(), String>  {
-	let mut in_reader:Box<dyn io::Read> = match in_path {
+	let in_reader:Box<dyn io::Read> = match in_path {
 		Some(path) => {
 			let in_file = fs::File::open(path);
 			if let Err(e) = in_file {
@@ -57,13 +54,11 @@ pub fn work(in_path:Option<&str>, out_path:Option<&str>) -> Result<(), String>
 		},
 	};
 
-	let mut read_buf:[u8; BLOCK_SIZE] = [0; BLOCK_SIZE];
-	let mut last_ch:char = '\0';
+	let mut last_ch = '\0';
 	let mut tab_num = 0;
 
-	while in_reader.read(&mut read_buf).unwrap() > 0 {
-		for i in read_buf {
-			let ch = i as char;
+	for i in in_reader.bytes() {
+		let ch = i.unwrap() as char;
 		match ch {
 			'[' | '{' => {
 				tab_num += 1;
@@ -102,9 +97,6 @@ pub fn work(in_path:Option<&str>, out_path:Option<&str>) -> Result<(), String>
 			},
 		}
 	}
-	}
-
-	out_writer.flush().unwrap();
 
 	Ok(())
 }