Support LZ4 compression

src/Tools/.cargo/config.toml

@@ -1,2 +0,0 @@
-[target.x86_64-unknown-linux-musl]
-linker = "rust-lld"

src/Tools/psxcdgen_ex/src/lib.rs

@@ -117,7 +117,7 @@ fn parse_configuration(config: config_reader::Configuration) -> Result<CDDesc, E
                     let mut desc_file = {
                         match file.kind {
                             config_reader::FileKind::Regular => types::File::new_regular(file.common.name.as_str(), read_file(&file.path)?)?,
-                            config_reader::FileKind::Overlay => types::overlay::load_from(file.path)?,
+                            config_reader::FileKind::Overlay => types::overlay::load_from(file.common.name.as_str(), file.path)?,
                         }
                     };
 

src/Tools/psxcdgen_ex/src/types/overlay/mod.rs

@@ -1,7 +1,6 @@
 use super::File;
 use std::path::PathBuf;
-use byteorder::{ByteOrder, BigEndian, LittleEndian};
-use lz4::EncoderBuilder;
+use byteorder::{ByteOrder, LittleEndian};
 use tool_helper::{Error, format_if_error, read_file};
 
 #[repr(packed)]
@@ -17,7 +16,7 @@ impl OverlayHeader {
     }
 }
 
-pub fn load_from(file_path: PathBuf) -> Result<File, Error> {
+pub fn load_from(file_name: &str, file_path: PathBuf) -> Result<File, Error> {
     let     overlay_header_size = std::mem::size_of::<OverlayHeader>();
     let mut content             = read_file(&file_path)?;
 
@@ -39,17 +38,6 @@ pub fn load_from(file_path: PathBuf) -> Result<File, Error> {
         count += 1;
     }
 
-    let mut lz4_encoder = EncoderBuilder::new().level(16).build(Vec::<u8>::new())?;
-    
-    std::io::copy(&mut&content[..], &mut lz4_encoder)?;
-    let (output, result) = lz4_encoder.finish();
-
-    match result {
-        Ok(()) => println!("Wuff: {}", output.len()),
-        Err(error) => {
-            return Err(Error::from_error(error));
-        }
-    }
-
-    Err(Error::not_implemented("load_from overlay"))
+    let content = format_if_error!(tool_helper::compress::lz4(content, 16), "Compressing {} failed with \"{error_text}\"", file_path.to_string_lossy())?;
+    Ok(File::new_overlay(file_name, content)?)
 }

src/Tools/tool_helper/Cargo.toml

@@ -1,10 +1,11 @@
 [package]
 name = "tool_helper"
-version = "0.5.0"
+version = "0.6.0"
 edition = "2021"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
 cdtypes = {path = "../cdtypes"}
+lz4     = "*"
 paste   = "*"

src/Tools/tool_helper/src/compress.rs

@@ -0,0 +1,14 @@
+use super::Error;
+use lz4::EncoderBuilder;
+
+pub fn lz4(data: Vec<u8>, compression_level: u32) -> Result<Vec<u8>, Error> {
+    let mut lz4_encoder = EncoderBuilder::new().level(compression_level).build(Vec::<u8>::new())?;
+    
+    std::io::copy(&mut&data[..], &mut lz4_encoder)?;
+    let (output, result) = lz4_encoder.finish();
+
+    match result {
+        Ok(()) => Ok(output),
+        Err(error) => Err(Error::from_error(error))
+    }
+}

src/Tools/tool_helper/src/lib.rs

@@ -1,6 +1,7 @@
 use std::{boxed::Box, io::{BufReader, BufWriter, Read, Write}, path::PathBuf};
 
 pub mod bits;
+pub mod compress;
 pub mod raw;
 
 pub type BufferedInputFile = BufReader<std::fs::File>;