56 lines
1.1 KiB
Python
56 lines
1.1 KiB
Python
# -*- coding: utf-8 -*-
|
|
|
|
""" Tablib - CSV Support.
|
|
"""
|
|
|
|
from tablib.compat import is_py3, csv, StringIO
|
|
|
|
|
|
title = 'csv'
|
|
extensions = ('csv',)
|
|
|
|
|
|
DEFAULT_ENCODING = 'utf-8'
|
|
|
|
|
|
|
|
def export_set(dataset):
|
|
"""Returns CSV representation of Dataset."""
|
|
stream = StringIO()
|
|
|
|
if is_py3:
|
|
_csv = csv.writer(stream)
|
|
else:
|
|
_csv = csv.writer(stream, encoding=DEFAULT_ENCODING)
|
|
|
|
for row in dataset._package(dicts=False):
|
|
_csv.writerow(row)
|
|
|
|
return stream.getvalue()
|
|
|
|
|
|
def import_set(dset, in_stream, headers=True):
|
|
"""Returns dataset from CSV stream."""
|
|
|
|
dset.wipe()
|
|
|
|
if is_py3:
|
|
rows = csv.reader(in_stream.splitlines())
|
|
else:
|
|
rows = csv.reader(in_stream.splitlines(), encoding=DEFAULT_ENCODING)
|
|
for i, row in enumerate(rows):
|
|
|
|
if (i == 0) and (headers):
|
|
dset.headers = row
|
|
else:
|
|
dset.append(row)
|
|
|
|
|
|
def detect(stream):
|
|
"""Returns True if given stream is valid CSV."""
|
|
try:
|
|
csv.Sniffer().sniff(stream, delimiters=',')
|
|
return True
|
|
except (csv.Error, TypeError):
|
|
return False
|