add progress.Tqdm(truncate)

dvc/progress.py

@@ -40,6 +40,19 @@ class Tqdm(tqdm):
         self.set_description(desc, refresh=False)
         self.update(n)
 
+    @classmethod
+    def truncate(cls, s, max_len=10, end=True, fill="..."):
+        """
+        Guarantee len(output) < max_lenself.
+        >>> truncate("hello", 4)
+        '...o'
+        """
+        if len(s) <= max_len:
+            return s
+        if len(fill) > max_len:
+            return fill[-max_len:] if end else fill[:max_len]
+        i = max_len - len(fill)
+        return (fill + s[-i:]) if end else (s[:i] + fill)
 
 class Progress(tqdm):
     """

dvc/remote/http.py

@@ -36,6 +36,7 @@ class RemoteHTTP(RemoteBASE):
         #    leave = total > self.CHUNK_SIZE * 100
 
         with Tqdm(total=total, leave=leave, bytes=True,
+                  desc=Tqdm.truncate(to_file, 10),
                   disable=no_progress_bar) as pbar:
             with open(to_file, "wb") as fd:
                 for chunk in request.iter_content(chunk_size=self.CHUNK_SIZE):