1 files changed, 35 insertions, 0 deletions
diff --git a/gitdb/utils/compat.py b/gitdb/utils/compat.py
new file mode 100644
index 0000000..a2640fd
--- /dev/null
+++ b/gitdb/utils/compat.py
@@ -0,0 +1,35 @@
+import sys
+
+PY3 = sys.version_info[0] == 3
+
+try:
+    from itertools import izip
+    xrange = xrange
+except ImportError:
+    # py3
+    izip = zip
+    xrange = range
+# end handle python version
+
+try:
+    # Python 2
+    buffer = buffer
+    memoryview = buffer
+except NameError:
+    # Python 3 has no `buffer`; only `memoryview`
+    # However, it's faster to just slice the object directly, maybe it keeps a view internally
+    def buffer(obj, offset, size=None):
+        if size is None:
+            # return memoryview(obj)[offset:]
+            return obj[offset:]
+        else:
+            # return memoryview(obj)[offset:offset+size]
+            return obj[offset:offset+size]
+    # end buffer reimplementation
+
+    memoryview = memoryview
+
+try:
+    MAXSIZE = sys.maxint
+except AttributeError:
+    MAXSIZE = sys.maxsize