Changeset 6503

Timestamp:

3 Jul 2011, 19:16:04 (13 years ago)

Author:

uli

Message:

Add file comparison helper.

File:

• main/waeup.sirp/trunk/src/waeup/sirp/utils/helpers.py (modified) (2 diffs)

main/waeup.sirp/trunk/src/waeup/sirp/utils/helpers.py

@@ -15 +15 @@
 from zope.security.management import getInteraction
 
+BUFSIZE = 8 * 1024
 
 def removeFileOrDirectory(filepath):
@@ -387 +388 @@
         return None
     return principal
+
+def cmp_files(file_descr1, file_descr2):
+    """Compare two files by their file descriptors.
+
+    Returns ``True`` if both are equal, ``False`` otherwise.
+    """
+    while True:
+        b1 = file_descr1.read(BUFSIZE)
+        b2 = file_descr2.read(BUFSIZE)
+        if b1 != b2:
+            return False
+        if not b1:
+            return True