feat: New compression logic

src/lib/handlers/tar.sh

@@ -28,7 +28,6 @@ handler::tar() {
     local dst_path
     local opts
     local archive
-    local compr
     local exclude
     local file_ext
 
@@ -68,17 +67,11 @@ handler::tar() {
         exclude=
     fi
 
-    # Overwrite __compression
-    if [ "$compression" ]; then
-        compr="$compression"
-    else
-        compr="$__compression"
-    fi
-
     # Select filename extension by compression type.
+    if [ "$compression" ]; then
         # Make sure for the `--auto-compress` is enabled in __tar_options
         # Refference: https://www.gnu.org/software/tar/manual/html_node/gzip.html
-    case "$compr" in
+        case "$compression" in
             gzip|gz)    file_ext='.tar.gz';;    # gzip
             tgz)        file_ext='.tgz';;       # gzip
             taz)        file_ext='.taz';;       # gzip
@@ -95,8 +88,11 @@ handler::tar() {
             xz)         file_ext='.tar.xz';;    # xz
             zstd|zst)   file_ext='.tar.zst';;   # zstd
             tzst)       file_ext='.tzst';;      # zstd
-        *)          file_ext='.tar.gz';;    # Force gzip
+            *)          file_ext='.tar';;       # No compression
         esac
+    else
+        file_ext='.tar'
+    fi
 
     archive="${dst_path}/$(gen_backup_name "$file_ext")"