mirror of
https://github.com/kennethreitz/tablib.git
synced 2026-06-05 15:00:19 +00:00
Claude Paroz
e66eb4a189
It is time to make it happen. * Dropped Python 3.2 support Recent dependencies are dropping Python 3.2 too. * Replaced vendored openpyxl by a dependency Thanks Tommy Anthony for the initial patch.
150 lines
3.9 KiB
Python
150 lines
3.9 KiB
Python
# -*- coding: utf-8 -*-
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""" Tablib - XLSX Support.
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"""
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import sys
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if sys.version_info[0] > 2:
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from io import BytesIO
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else:
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from cStringIO import StringIO as BytesIO
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import openpyxl
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import tablib
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Workbook = openpyxl.workbook.Workbook
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ExcelWriter = openpyxl.writer.excel.ExcelWriter
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get_column_letter = openpyxl.utils.get_column_letter
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from tablib.compat import unicode
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title = 'xlsx'
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extensions = ('xlsx',)
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def detect(stream):
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"""Returns True if given stream is a readable excel file."""
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try:
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openpyxl.reader.excel.load_workbook(stream)
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return True
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except openpyxl.shared.exc.InvalidFileException:
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pass
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def export_set(dataset, freeze_panes=True):
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"""Returns XLSX representation of Dataset."""
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wb = Workbook()
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ws = wb.worksheets[0]
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ws.title = dataset.title if dataset.title else 'Tablib Dataset'
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dset_sheet(dataset, ws, freeze_panes=freeze_panes)
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stream = BytesIO()
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wb.save(stream)
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return stream.getvalue()
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def export_book(databook, freeze_panes=True):
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"""Returns XLSX representation of DataBook."""
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wb = Workbook()
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for sheet in wb.worksheets:
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wb.remove_sheet(sheet)
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for i, dset in enumerate(databook._datasets):
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ws = wb.create_sheet()
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ws.title = dset.title if dset.title else 'Sheet%s' % (i)
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dset_sheet(dset, ws, freeze_panes=freeze_panes)
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stream = BytesIO()
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wb.save(stream)
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return stream.getvalue()
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def import_set(dset, in_stream, headers=True):
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"""Returns databook from XLS stream."""
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dset.wipe()
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xls_book = openpyxl.reader.excel.load_workbook(BytesIO(in_stream))
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sheet = xls_book.get_active_sheet()
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dset.title = sheet.title
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for i, row in enumerate(sheet.rows):
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row_vals = [c.value for c in row]
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if (i == 0) and (headers):
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dset.headers = row_vals
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else:
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dset.append(row_vals)
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def import_book(dbook, in_stream, headers=True):
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"""Returns databook from XLS stream."""
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dbook.wipe()
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xls_book = openpyxl.reader.excel.load_workbook(BytesIO(in_stream))
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for sheet in xls_book.worksheets:
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data = tablib.Dataset()
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data.title = sheet.title
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for i, row in enumerate(sheet.rows):
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row_vals = [c.value for c in row]
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if (i == 0) and (headers):
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data.headers = row_vals
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else:
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data.append(row_vals)
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dbook.add_sheet(data)
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def dset_sheet(dataset, ws, freeze_panes=True):
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"""Completes given worksheet from given Dataset."""
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_package = dataset._package(dicts=False)
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for i, sep in enumerate(dataset._separators):
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_offset = i
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_package.insert((sep[0] + _offset), (sep[1],))
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bold = openpyxl.styles.Font(bold=True)
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wrap_text = openpyxl.styles.Alignment(wrap_text=True)
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for i, row in enumerate(_package):
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row_number = i + 1
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for j, col in enumerate(row):
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col_idx = get_column_letter(j + 1)
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cell = ws.cell('%s%s' % (col_idx, row_number))
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# bold headers
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if (row_number == 1) and dataset.headers:
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# cell.value = unicode('%s' % col, errors='ignore')
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cell.value = unicode(col)
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cell.font = bold
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if freeze_panes:
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# Export Freeze only after first Line
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ws.freeze_panes = 'A2'
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# bold separators
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elif len(row) < dataset.width:
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cell.value = unicode('%s' % col, errors='ignore')
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cell.font = bold
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# wrap the rest
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else:
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try:
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if '\n' in col:
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cell.value = unicode('%s' % col, errors='ignore')
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cell.alignment = wrap_text
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else:
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cell.value = unicode('%s' % col, errors='ignore')
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except TypeError:
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cell.value = unicode(col)
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