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43 lines
1.0 KiB
43 lines
1.0 KiB
# ~*~ coding: utf-8 ~*~
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#
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import codecs
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import unicodecsv
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from six import BytesIO
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from .base import BaseFileRenderer
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from ..const import CSV_FILE_ESCAPE_CHARS
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class CSVFileRenderer(BaseFileRenderer):
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media_type = 'text/csv'
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format = 'csv'
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writer = None
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buffer = None
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escape_chars = tuple(CSV_FILE_ESCAPE_CHARS)
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def initial_writer(self):
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csv_buffer = BytesIO()
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csv_buffer.write(codecs.BOM_UTF8)
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csv_writer = unicodecsv.writer(csv_buffer, encoding='utf-8')
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self.buffer = csv_buffer
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self.writer = csv_writer
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def __render_row(self, row):
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row_escape = []
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for d in row:
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if isinstance(d, str) and d.strip().startswith(self.escape_chars):
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d = "'{}".format(d)
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row_escape.append(d)
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return row_escape
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def write_row(self, row):
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row = self.__render_row(row)
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self.writer.writerow(row)
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def get_rendered_value(self):
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value = self.buffer.getvalue()
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return value
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