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58 lines
1.2 KiB
Python
58 lines
1.2 KiB
Python
# -*- coding: utf-8 -*-
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""" Tablib - *SV Support.
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"""
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from tablib.compat import is_py3, csv, StringIO
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title = 'csv'
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extensions = ('csv',)
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DEFAULT_ENCODING = 'utf-8'
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DEFAULT_DELIMITER = ','
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def export_set(dataset, **kwargs):
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"""Returns CSV representation of Dataset."""
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stream = StringIO()
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kwargs.setdefault('delimiter', DEFAULT_DELIMITER)
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if not is_py3:
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kwargs.setdefault('encoding', DEFAULT_ENCODING)
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_csv = csv.writer(stream, **kwargs)
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for row in dataset._package(dicts=False):
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_csv.writerow(row)
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return stream.getvalue()
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def import_set(dset, in_stream, headers=True, **kwargs):
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"""Returns dataset from CSV stream."""
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dset.wipe()
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kwargs.setdefault('delimiter', DEFAULT_DELIMITER)
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if not is_py3:
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kwargs.setdefault('encoding', DEFAULT_ENCODING)
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rows = csv.reader(StringIO(in_stream), **kwargs)
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for i, row in enumerate(rows):
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if (i == 0) and (headers):
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dset.headers = row
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else:
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dset.append(row)
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def detect(stream, delimiter=DEFAULT_DELIMITER):
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"""Returns True if given stream is valid CSV."""
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try:
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csv.Sniffer().sniff(stream, delimiters=delimiter)
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return True
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except (csv.Error, TypeError):
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return False
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