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# -*- coding: utf-8 -*-
""" Tablib - CSV Support.
"""
import os
import tablib
from tablib.compat import is_py3, csv, StringIO
title = 'csv'
extentions = ('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:
rows = dialect = csv.Sniffer().sniff(stream)
return True
except csv.Error:
return False
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