#12 UnicodeWriter was added to project for created csv files with uni…

…code characters

eco/utils/csv_utf.py

@@ -0,0 +1,31 @@
+import csv, codecs, cStringIO
+
+
+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=csv.excel_tab, encoding='utf-8', **kwds):
+        # Redirect output to a queue
+        self.queue = cStringIO.StringIO()
+        self.writer = csv.writer(self.queue, dialect=dialect, **kwds)
+        self.stream = f
+        self.encoder = codecs.getincrementalencoder(encoding)()
+
+    def writerow(self, row):
+        self.writer.writerow([s.encode('utf-8') if isinstance(s, unicode) else s 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)