OpenSlides/openslides/agenda/csv_import.py
Oskar Hahn 32137b6523 Use python3
python3.3 and python3.4 are supported
2014-08-24 21:21:11 +02:00

54 lines
1.9 KiB
Python

import csv
import re
from django.db import transaction
from django.utils.translation import ugettext as _
from openslides.utils import csv_ext
from .models import Item
def import_agenda_items(csvfile):
"""
Performs the import of agenda items form a csv file.
"""
# Check encoding
try:
csvfile.read().decode('utf8')
except UnicodeDecodeError:
return_value = '', '', _('Import file has wrong character encoding, only UTF-8 is supported!')
else:
csvfile.seek(0)
# Check dialect
dialect = csv.Sniffer().sniff(csvfile.readline().decode('utf8'))
dialect = csv_ext.patchup(dialect)
csvfile.seek(0)
# Parse CSV file
with transaction.commit_on_success():
success_lines = []
error_lines = []
for (line_no, line) in enumerate(csv.reader(
(line.decode('utf8') for line in csvfile.readlines()), dialect=dialect)):
if line_no == 0:
# Do not read the header line
continue
# Check format
try:
title, text, duration = line[:3]
except ValueError:
error_lines.append(line_no + 1)
continue
if duration and re.match('^(?:[0-9]{1,2}:[0-5][0-9]|[0-9]+)$', duration) is None:
error_lines.append(line_no + 1)
continue
Item.objects.create(title=title, text=text, duration=duration)
success_lines.append(line_no + 1)
success = _('%d items successfully imported.') % len(success_lines)
if error_lines:
error = _('Error in the following lines: %s.') % ', '.join(str(number) for number in error_lines)
else:
error = ''
return_value = success, '', error
return return_value