base type for encoding subsrate and OctetString type is now 'bytes' on

py3k and 'str' on py2k

2 files changed, 18 insertions, 0 deletions

diff --git a/pyasn1/compat/__init__.py b/pyasn1/compat/__init__.py
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/pyasn1/compat/__init__.py
diff --git a/pyasn1/compat/octets.py b/pyasn1/compat/octets.py
new file mode 100644
index 0000000..d0303ea
--- /dev/null
+++ b/pyasn1/compat/octets.py
@@ -0,0 +1,18 @@
+from sys import version_info
+
+if version_info[0] <= 2:
+    int2oct = chr
+    ints2octs = lambda s: ''.join([ int2oct(x) for x in s ])
+    null = ''
+    oct2int = ord
+    octs2ints = lambda s: [ oct2int(x) for x in s ]
+    str2octs = lambda x: x
+    octs2str = lambda x: x
+else:
+    ints2octs = bytes
+    int2oct = lambda x: ints2octs((x,))
+    null = ints2octs()
+    oct2int = lambda x: x
+    octs2ints = lambda s: [ x for x in s ]
+    str2octs = lambda x: x.encode()
+    octs2str = lambda x: x.decode()