1 files changed, 72 insertions, 0 deletions
diff --git a/account/csv_unicode.py b/account/csv_unicode.py
new file mode 100644
index 0000000..5cc7f4e
--- /dev/null
+++ b/account/csv_unicode.py
@@ -0,0 +1,72 @@
+# -*- coding: utf-8 -*-
+#
+# Python 2's csv module does not support Unicode input and output.
+# Use the UnicodeReader and UnicodeWriter class to provide
+# unicode csv i/o in django.
+#
+# Ref:
+# https://docs.djangoproject.com/en/dev/howto/outputting-csv/
+# https://docs.python.org/2/library/csv.html
+#
+
+import csv, codecs, cStringIO
+
+class UTF8Recoder:
+    """
+    Iterator that reads an encoded stream and reencodes the input to UTF-8
+    """
+    def __init__(self, f, encoding):
+        self.reader = codecs.getreader(encoding)(f)
+
+    def __iter__(self):
+        return self
+
+    def next(self):
+        return self.reader.next().encode('utf-8')
+
+class UnicodeReader:
+    """
+    A CSV reader which will iterate over lines in the CSV file "f",
+    which is encoded in the given encoding.
+    """
+
+    def __init__(self, f, dialect='excel', encoding='utf-8', **kwargs):
+        f = UTF8Recoder(f, encoding)
+        self.reader = csv.reader(f, dialect=dialect, **kwargs)
+
+    def next(self):
+        row = self.reader.next()
+        return [unicode(s, 'utf-8') for s in row]
+
+    def __iter__(self):
+        return self
+
+class UnicodeWriter:
+    """
+    A CSV writer which will write rows to CSV file "f",
+    which is encoded in the given encoding.
+    """
+
+    def __init__(self, f, dialect='excel', encoding='utf-8', **kwargs):
+        # Redirect output to a queue
+        self.queue = cStringIO.StringIO()
+        self.writer = csv.writer(self.queue, dialect=dialect, **kwargs)
+        self.stream = f
+        self.encoder = codecs.getincrementalencoder(encoding)()
+
+    def writerow(self, row):
+        self.writer.writerow([s.encode('utf-8') for s in row])
+        # Fetch UTF-8 output from the queue ...
+        data = self.queue.getvalue()
+        data = data.decode('utf-8')
+        # ... and reencode it into the target encoding
+        data = self.encoder.encode(data)
+        # write to the target stream
+        self.stream.write(data)
+        # empty queue
+        self.queue.truncate(0)
+
+    def writerows(self, rows):
+        for row in rows:
+            self.writerow(row)
+