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1 files changed, 70 insertions, 0 deletions

diff --git a/external/construct/lib/py3compat.py b/external/construct/lib/py3compat.py
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+++ b/external/construct/lib/py3compat.py
@@ -0,0 +1,70 @@
+#-------------------------------------------------------------------------------
+# py3compat.py
+#
+# Some Python2&3 compatibility code
+#-------------------------------------------------------------------------------
+import sys
+PY3 = sys.version_info[0] == 3
+
+
+if PY3:
+    import io
+    StringIO = io.StringIO
+    BytesIO = io.BytesIO
+
+    def bchr(i):
+        """ When iterating over b'...' in Python 2 you get single b'_' chars
+            and in Python 3 you get integers. Call bchr to always turn this
+            to single b'_' chars.
+        """
+        return bytes((i,))
+
+    def u(s):
+        return s
+
+    def int2byte(i):
+        return bytes((i,))
+
+    def byte2int(b):
+        return b
+
+    def str2bytes(s):
+        return s.encode("latin-1")
+
+    def str2unicode(s):
+        return s
+
+    def bytes2str(b):
+        return b.decode('latin-1')
+
+    def decodebytes(b, encoding):
+        return bytes(b, encoding)
+
+    advance_iterator = next
+        
+else:
+    import cStringIO
+    StringIO = BytesIO = cStringIO.StringIO
+
+    int2byte = chr
+    byte2int = ord
+    bchr = lambda i: i
+
+    def u(s):
+        return unicode(s, "unicode_escape")
+
+    def str2bytes(s):
+        return s
+
+    def str2unicode(s):
+        return unicode(s, "unicode_escape")
+
+    def bytes2str(b):
+        return b
+
+    def decodebytes(b, encoding):
+        return b.decode(encoding)
+
+    def advance_iterator(it):
+        return it.next()
+