src/pxar/decoder.rs: add getter functions to obtain start/end offsets for directories

Signed-off-by: Christian Ebner <c.ebner@proxmox.com>

src/pxar/decoder.rs

@@ -19,6 +19,16 @@ pub struct DirectoryEntry {
     pub entry: PxarEntry,
 }
 
+impl DirectoryEntry {
+    pub(crate) fn start_offset(&self) -> u64 {
+        self.start
+    }
+
+    pub(crate) fn end_offset(&self) -> u64 {
+        self.end
+    }
+}
+
 // This one needs Read+Seek
 pub struct Decoder<R: Read + Seek, F: Fn(&Path) -> Result<(), Error>> {
     inner: SequentialDecoder<R, F>,
@@ -58,6 +68,10 @@ impl<R: Read + Seek, F: Fn(&Path) -> Result<(), Error>> Decoder<R, F> {
         Ok(pos)
     }
 
+    pub(crate) fn root_end_offset(&self) -> u64 {
+        self.root_end
+    }
+
     pub fn restore(&mut self, dir: &DirectoryEntry, path: &Path) -> Result<(), Error> {
         let start = dir.start;