Make side_diff use separate set of formatting params

Author: zxvfc

src/diff.rs

@@ -61,7 +61,16 @@ pub fn main(opts: Peekable<ArgsOs>) -> ExitCode {
         }),
         Format::SideBySide => {
             let mut output = stdout().lock();
-            side_diff::diff(&from_content, &to_content, &mut output, &params)
+            side_diff::diff(
+                &from_content,
+                &to_content,
+                &mut output,
+                &side_diff::Params {
+                    tabsize: params.tabsize,
+                    width: params.width,
+                    expand_tabs: params.expand_tabs,
+                },
+            )
         }
     };
     if params.brief && !result.is_empty() {

src/side_diff.rs

@@ -8,8 +8,6 @@ use diff::Result;
 use std::{io::Write, vec};
 use unicode_width::UnicodeWidthStr;
 
-use crate::params::Params;
-
 const GUTTER_WIDTH_MIN: usize = 3;
 
 struct CharIter<'a> {
@@ -306,6 +304,13 @@ fn push_output<T: Write>(
     Ok(())
 }
 
+#[derive(Default)]
+pub struct Params {
+    pub width: usize,
+    pub tabsize: usize,
+    pub expand_tabs: bool,
+}
+
 pub fn diff<T: Write>(
     from_file: &[u8],
     to_file: &[u8],