Progress in Lzma compression

src/compressors/mod.rs

@@ -9,4 +9,5 @@ pub use self::compressor::Entry;
 pub use self::tar::TarCompressor;
 pub use self::zip::ZipCompressor;
 pub use self::bzip::BzipCompressor;
-pub use self::tomemory::GzipCompressor;
+pub use self::tomemory::GzipCompressor;
+pub use self::tomemory::LzmaCompressor;

src/compressors/tomemory.rs

@@ -8,6 +8,7 @@ use crate::utils::ensure_exists;
 use super::{Compressor, Entry};
 
 pub struct GzipCompressor {}
+pub struct LzmaCompressor {}
 
 struct CompressorToMemory {}
 
@@ -78,6 +79,7 @@ fn get_encoder<'a>(
             buffer,
             flate2::Compression::default(),
         )),
+        CompressionFormat::Lzma => Box::new(xz2::write::XzEncoder::new(buffer, 6)),
         _other => unreachable!(),
     }
 }
@@ -94,4 +96,19 @@ impl Compressor for GzipCompressor {
             ),
         }
     }
+}
+
+
+impl Compressor for LzmaCompressor {
+    fn compress(&self, from: Entry) -> OuchResult<Vec<u8>> {
+        let format = CompressionFormat::Lzma;
+        match from {
+            Entry::Files(files) => Ok(
+                CompressorToMemory::compress_files(files, format)?
+            ),
+            Entry::InMemory(file) => Ok(
+                CompressorToMemory::compress_file_in_memory(file, format)?
+            ),
+        }
+    }
 }

src/evaluator.rs

@@ -9,6 +9,7 @@ use crate::compressors::{
     ZipCompressor,
     GzipCompressor,
     BzipCompressor,
+    LzmaCompressor
 };
 
 use crate::decompressors::{
@@ -73,7 +74,7 @@ impl Evaluator {
             CompressionFormat::Zip  => Box::new(ZipCompressor {}),
             CompressionFormat::Bzip => Box::new(BzipCompressor {}),
             CompressionFormat::Gzip => Box::new(GzipCompressor {}),
-            _other => todo!()
+            CompressionFormat::Lzma => Box::new(LzmaCompressor {}),
         };
 
         Ok((first_compressor, second_compressor))