use util_io::read_to_string

src/main.rs

@@ -7,14 +7,12 @@ mod opt;
 
 use std::{
     fs::{self, File},
-    io::{
-        self,
-        prelude::*,
-    }
+    io::{self}
 };
 use rust_util::{
     XResult,
     util_msg::*,
+    util_io::*,
 };
 use opt::*;
 
@@ -30,12 +28,6 @@ Written by Hatter Jiang
 "#, VERSION, &GIT_HASH[0..7]);
 }
 
-fn read_to_string(read: &mut dyn Read) -> XResult<String> {
-    let mut buffer = String::new();
-    read.read_to_string(&mut buffer)?;
-    Ok(buffer)
-}
-
 
 fn main() {
     let mut options = Options::new();