added file reader offset

src/utils/readoffset.py

@@ -0,0 +1,17 @@
+"""Onionr - Private P2P Communication.
+
+read from a file from an offset (efficiently)
+"""
+from collections import namedtuple
+
+OffsetReadResult = namedtuple('OffsetReadResult', ['data', 'new_offset'])
+
+
+def read_from_offset(file_path, offset=0):
+    with open(file_path, 'rb') as f:
+        if offset:
+            f.seek(offset)
+        data = f.read()
+        offset = f.tell()
+
+    return OffsetReadResult(data, offset)

src/utils/readstatic.py

@@ -20,11 +20,11 @@ import os
 """
 
 
-def get_static_dir()->str:
+def get_static_dir() -> str:
     return os.path.dirname(os.path.realpath(__file__)) + '/../../static-data/'
 
 
-def read_static(file:str, ret_bin:bool=False)->Union[str, bytes]:
+def read_static(file: str, ret_bin: bool = False) -> Union[str, bytes]:
     static_file = get_static_dir() + file
 
     if ret_bin: