phase 3a

src/parsing.rs

@@ -1,5 +1,7 @@
 use std::ffi::OsString;
 use std::path::{Path, PathBuf};
+use flate2::Compression;
+use flate2::write::GzEncoder;
 use clap::{Parser, Subcommand};
 use crate::error::DrawerError;
 use crate::parsing::KeyType::*;
@@ -108,10 +110,13 @@ impl DrawerOperation {
     fn perform_close(&self) -> Result<(), DrawerError> {
         let mut buf: Vec<u8> = Vec::new();
         {
-            let mut archive = tar::Builder::new(&mut buf);
+            let gz = GzEncoder::new(&mut buf, Compression::default());
+            let mut archive = tar::Builder::new(gz);
             archive.append_dir_all(".", &self.target_path)
                 .map_err(|_| DrawerError::TarFailed)?;
-            archive.finish()
+            let gz = archive.into_inner()
+                .map_err(|_| DrawerError::TarFailed)?;
+            gz.finish()
                 .map_err(|_| DrawerError::TarFailed)?;
         }
         std::fs::write(&self.drawer_file, &buf)