Feat sdiff inital with parser

Cargo.toml

@@ -16,6 +16,7 @@ path = "src/main.rs"
 
 [dependencies]
 chrono = "0.4.38"
+const_format = "0.2.35"
 diff = "0.1.13"
 itoa = "1.0.11"
 regex = "1.10.4"
@@ -46,7 +47,14 @@ harness = false
 
 [features]
 # default = ["feat_bench_not_diff"]
-# Turn bench for diffutils cmp off
+# instead of limiting to KiB, MiB, etc, one can write kib, mib, Mb or whatever case.
+feat_allow_case_insensitive_number_units = []
+# Disable bench for diffutils cmp
 feat_bench_not_cmp = []
-# Turn bench for diffutils diff off
+# Disable bench for diffutils diff
 feat_bench_not_diff = []
+# Enables a check on options defined in NOT_YET_IMPLEMENTED.
+# If on the parser will return an error message in these cases.
+# This is preferable when running the util as unsupported options
+# are pointed out to the user, but can make tests fail. 
+feat_check_not_yet_implemented = []

fuzz/fuzz_targets/fuzz_side.rs

@@ -4,9 +4,9 @@ extern crate libfuzzer_sys;
 
 use diffutilslib::side_diff;
 
+use diffutilslib::params::Params;
 use std::fs::File;
 use std::io::Write;
-use diffutilslib::params::Params;
 
 fuzz_target!(|x: (Vec<u8>, Vec<u8>, /* usize, usize */ bool)| {
     let (original, new, /* width, tabsize, */ expand) = x;
@@ -22,7 +22,7 @@ fuzz_target!(|x: (Vec<u8>, Vec<u8>, /* usize, usize */ bool)| {
         ..Default::default()
     };
     let mut output_buf = vec![];
-    side_diff::diff(&original, &new, &mut output_buf, &params);
+    side_diff::diff(&original, &new, &mut output_buf, &(&params).into());
     File::create("target/fuzz.file.original")
         .unwrap()
         .write_all(&original)
@@ -39,4 +39,4 @@ fuzz_target!(|x: (Vec<u8>, Vec<u8>, /* usize, usize */ bool)| {
         .unwrap()
         .write_all(&output_buf)
         .unwrap();
-});
+});