vfs: short circuit read when at EOF

Signed-off-by: Rob Browning <[email protected]>
nwf · Dec 8, 2018 · d73c6d3 · d73c6d3
1 parent b15fcfd
commit d73c6d3
Showing 1 changed file with 4 additions and 1 deletion.
diff --git a/lib/bup/vfs.py b/lib/bup/vfs.py
@@ -170,8 +170,11 @@ def tell(self):
         return self.ofs
 
     def read(self, count=-1):
+        size = self._compute_size()
+        if self.ofs >= size:
+            return ''
         if count < 0:
-            count = self._compute_size() - self.ofs
+            count = size - self.ofs
         if not self.reader or self.reader.ofs != self.ofs:
             self.reader = _ChunkReader(self._repo, self.oid, self.ofs)
         try: