Fix lossless not working

Author: Lymphatus

Cargo.toml

@@ -15,7 +15,7 @@ homepage = "https://github.com/Lymphatus/caesium-clt"
 repository = "https://github.com/Lymphatus/caesium-clt"
 
 [dependencies]
-indicatif = {version= "0.17", features = ["rayon"]}
+indicatif = { version = "0.17", features = ["rayon"] }
 walkdir = "2.5"
 infer = "0.16"
 rayon = "1.10"

src/compressor.rs

@@ -32,6 +32,7 @@ pub struct CompressionResult {
 pub struct CompressionOptions {
     pub quality: Option<u32>,
     pub max_size: Option<usize>,
+    pub lossless: bool,
     pub exif: bool,
     pub png_opt_level: u8,
     pub zopfli: bool,
@@ -243,6 +244,8 @@ fn build_compression_parameters(
     parameters.webp.quality = quality;
     parameters.gif.quality = quality;
 
+    parameters.optimize = options.lossless;
+
     parameters.keep_metadata = options.exif;
 
     parameters.png.optimization_level = options.png_opt_level;
@@ -703,6 +706,13 @@ mod tests {
         assert!(results.iter().all(|r| matches!(r.status, CompressionStatus::Success)));
         assert!(results.iter().all(|r| fs::exists(&r.output_path).unwrap_or(false)));
 
+        options.quality = Some(100);
+        options.lossless = true;
+        options.overwrite_policy = OverwritePolicy::All;
+        results = start_compression(&input_files, &options, progress_bar.clone(), true);
+        assert!(results.iter().all(|r| matches!(r.status, CompressionStatus::Success)));
+        assert!(results.iter().all(|r| fs::exists(&r.output_path).unwrap_or(false)));
+
         options.quality = Some(80);
         options.keep_dates = true;
         results = start_compression(&input_files, &options, progress_bar.clone(), false);
@@ -740,9 +750,11 @@ mod tests {
         }));
         assert!(results.iter().all(|r| fs::exists(&r.output_path).unwrap_or(false)));
     }
+
     fn setup_options() -> CompressionOptions {
         CompressionOptions {
             quality: Some(80),
+            lossless: false,
             output_folder: None,
             same_folder_as_input: false,
             overwrite_policy: OverwritePolicy::All,

src/main.rs

@@ -122,6 +122,7 @@ fn setup_progress_bar(len: usize, verbose: VerboseLevel) -> ProgressBar {
 fn build_compression_options(args: &CommandLineArgs, base_path: &Path) -> CompressionOptions {
     CompressionOptions {
         quality: args.compression.quality,
+        lossless: args.compression.lossless,
         output_folder: args.output_destination.output.clone(),
         same_folder_as_input: args.output_destination.same_folder_as_input,
         overwrite_policy: args.overwrite,