Port to current version of escpos-printer-db.

src/escpos/codepages.py

@@ -0,0 +1,32 @@
+from .capabilities import CAPABILITIES
+
+
+class CodePageManager:
+    """Holds information about all the code pages (as defined
+    in escpos-printer-db).
+    """
+
+    def __init__(self, data):
+        self.data = data
+
+    def get_all(self):
+        return self.data.values()
+
+    def encode(self, text, encoding, errors='strict'):
+        """Adds support for Japanese to the builtin str.encode().
+
+        TODO: Add support for custom code page data from
+        escpos-printer-db.
+        """
+        # Python has not have this builtin?
+        if encoding.upper() == 'KATAKANA':
+            return encode_katakana(text)
+
+        return text.encode(encoding, errors=errors)
+
+    def get_encoding(self, encoding):
+        # resolve the encoding alias
+        return encoding.lower()
+
+
+CodePages = CodePageManager(CAPABILITIES['encodings'])