Feat: Update Diff

* use clap parser (10x faster)
* parser implements all options with
  not yet implemented error
* internationalization of error and
  info messages, e.g. help
* moved main tests
  (still has some module tests)
* separated and moved benches
* clean up old code
* adapted fuzzer

Author: Gunter Schmidt

Cargo.toml

@@ -247,7 +247,3 @@ large_types_passed_by_value = "allow"
 [workspace.metadata.cargo-shear]
 ignored = ["clap", "fluent", "libstdbuf"]
 
-[[bench]]
-name = "bench_diffutils"
-path = "benches/bench-diffutils.rs"
-harness = false

benches/bench-diffutils.rs

@@ -5,8 +5,9 @@ extern crate libfuzzer_sys;
 use std::fs::{self, File};
 use std::io::Write;
 use std::process::Command;
-use uu_diff::ed_diff::{self, DiffError};
-use uu_diff::params::Params;
+use uu_diff::ed_diff::{self};
+use uu_diff::params_diff::Params;
+use uu_diff::DiffError;
 
 fn diff_w(expected: &[u8], actual: &[u8], filename: &str) -> Result<Vec<u8>, DiffError> {
     let mut output = ed_diff::diff(expected, actual, &Params::default())?;

fuzz/fuzz_targets/fuzz_ed.rs

@@ -7,7 +7,7 @@ use std::io::Write;
 use std::process::Command;
 
 use uu_diff::normal_diff;
-use uu_diff::params::Params;
+use uu_diff::params_diff::Params;
 
 fuzz_target!(|x: (Vec<u8>, Vec<u8>)| {
     let (from, to) = x;

fuzz/fuzz_targets/fuzz_normal.rs

@@ -5,7 +5,7 @@ use std::fs::{self, File};
 use std::io::Write;
 use std::process::Command;
 
-use uu_diff::params::Params;
+use uu_diff::params_diff::Params;
 use uu_diff::unified_diff;
 
 fuzz_target!(|x: (Vec<u8>, Vec<u8>, u8)| {
@@ -28,7 +28,7 @@ fuzz_target!(|x: (Vec<u8>, Vec<u8>, u8)| {
         &Params {
             from: "a/fuzz.file".into(),
             to: "target/fuzz.file".into(),
-            context_count: context as usize,
+            n_output_lines: context as usize,
             ..Default::default()
         },
     );

fuzz/fuzz_targets/fuzz_patch.rs

@@ -5,7 +5,7 @@ extern crate libfuzzer_sys;
 use std::fs::File;
 use std::io::Write;
 
-use uu_diff::params::Params;
+use uu_diff::params_diff::Params;
 use uu_diff::side_diff;
 
 fuzz_target!(|x: (Vec<u8>, Vec<u8>, /* usize, usize */ bool)| {

fuzz/fuzz_targets/fuzz_side.rs

@@ -25,7 +25,7 @@ path = "src/main.rs"
 path = "src/diff.rs"
 
 [features]
-# default = ["feat_run_binary_bench" ]
+default = ["feat_run_binary_bench" ]
 # The cmd benchmarks start the binaries and take a lot of runtime on the github checks.
 # Only run them locally.
 feat_run_binary_bench = []
@@ -50,3 +50,7 @@ tempfile.workspace = true
 # for flamegraph
 # debug = 1
 
+[[bench]]
+name = "diff_bench"
+harness = false
+