add languages field for BookMeta

cps/book_formats.py

@@ -63,7 +63,8 @@ def default_meta(tmp_file_path, original_file_name, original_file_extension):
         description="",
         tags="",
         series="",
-        series_id="")
+        series_id="",
+        languages=None)
 
 
 def pdf_meta(tmp_file_path, original_file_name, original_file_extension):
@@ -91,7 +92,8 @@ def pdf_meta(tmp_file_path, original_file_name, original_file_extension):
         description=subject,
         tags="",
         series="",
-        series_id="")
+        series_id="",
+        languages=None)
 
 
 def pdf_preview(tmp_file_path, tmp_dir):

cps/epub.py

@@ -88,4 +88,5 @@ def get_epub_info(tmp_file_path, original_file_name, original_file_extension):
         description=epub_metadata['description'],
         tags="",
         series="",
-        series_id="")
+        series_id="",
+        languages=None)

cps/fb2.py

@@ -59,4 +59,5 @@ def get_fb2_info(tmp_file_path, original_file_extension):
         description=description,
         tags="",
         series="",
-        series_id="")
+        series_id="",
+        languages=None)

cps/uploader.py

@@ -7,7 +7,7 @@ import hashlib
 from collections import namedtuple
 import book_formats
 
-BookMeta = namedtuple('BookMeta', 'file_path, extension, title, author, cover, description, tags, series, series_id')
+BookMeta = namedtuple('BookMeta', 'file_path, extension, title, author, cover, description, tags, series, series_id, languages')
 
 """
  :rtype: BookMeta