1 files changed, 83 insertions, 0 deletions
diff --git a/Lib/fontTools/misc/py23.py b/Lib/fontTools/misc/py23.py
new file mode 100644
index 00000000..90217a33
--- /dev/null
+++ b/Lib/fontTools/misc/py23.py
@@ -0,0 +1,83 @@
+"""Python 2/3 compat layer."""
+
+from __future__ import print_function, division, absolute_import
+
+try:
+	basestring
+except NameError:
+	basestring = str
+
+try:
+	unicode
+except NameError:
+	unicode = str
+
+try:
+	unichr
+	bytechr = chr
+	byteord = ord
+except:
+	unichr = chr
+	def bytechr(n):
+		return bytes([n])
+	def byteord(c):
+		return c if isinstance(c, int) else ord(c)
+
+try:
+	from StringIO import StringIO
+except ImportError:
+	from io import BytesIO as StringIO
+
+def strjoin(iterable):
+	return ''.join(iterable)
+if str == bytes:
+	class Tag(str):
+		def tobytes(self):
+			if isinstance(self, bytes):
+				return self
+			else:
+				return self.encode('latin1')
+
+	def tostr(s, encoding='ascii'):
+		if not isinstance(s, str):
+			return s.encode(encoding)
+		else:
+			return s
+	tobytes = tostr
+
+	bytesjoin = strjoin
+else:
+	class Tag(str):
+
+		@staticmethod
+		def transcode(blob):
+			if not isinstance(blob, str):
+				blob = blob.decode('latin-1')
+			return blob
+
+		def __new__(self, content):
+			return str.__new__(self, self.transcode(content))
+		def __ne__(self, other):
+			return not self.__eq__(other)
+		def __eq__(self, other):
+			return str.__eq__(self, self.transcode(other))
+
+		def __hash__(self):
+			return str.__hash__(self)
+
+		def tobytes(self):
+			return self.encode('latin-1')
+
+	def tostr(s, encoding='ascii'):
+		if not isinstance(s, str):
+			return s.decode(encoding)
+		else:
+			return s
+	def tobytes(s, encoding='ascii'):
+		if not isinstance(s, bytes):
+			return s.encode(encoding)
+		else:
+			return s
+
+	def bytesjoin(iterable):
+		return b''.join(tobytes(item) for item in iterable)