combox/file.py: defined hash_file function.

hash_file function returns the SHA512 hash of the file's content.

The test for the hash_file function is at tests/file_test.py

1 files changed, 13 insertions, 0 deletions

diff --git a/combox/file.py b/combox/file.py
index 563e8cd..e4677e9 100644
--- a/combox/file.py
+++ b/combox/file.py
@@ -18,6 +18,7 @@
 
 import os
 
+from hashlib import sha512
 from os import path
 from sys import exit
 from glob import glob
@@ -243,6 +244,18 @@ def read_file(filename):
     return file_.read()
 
 
+def hash_file(filename):
+    """Does a SHA512 hash on the contents of file.
+
+    Returns the hexdigest of the file content's hash.
+
+    filename: Absolute pathname of the file.
+    """
+    file_content = read_file(filename)
+
+    return sha512(file_content).hexdigest()
+
+
 def write_file(filename, filecontent):
     """Write `filecontent' to `filename'.