/usr/lib/python2.7/dist-packages/xlrd/__init__.py is in python-xlrd 1.1.0-1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 | # Copyright (c) 2005-2012 Stephen John Machin, Lingfo Pty Ltd
# This module is part of the xlrd package, which is released under a
# BSD-style licence.
from .info import __VERSION__
import sys, zipfile, pprint
from . import timemachine
from .biffh import (
XLRDError,
biff_text_from_num,
error_text_from_code,
XL_CELL_BLANK,
XL_CELL_TEXT,
XL_CELL_BOOLEAN,
XL_CELL_ERROR,
XL_CELL_EMPTY,
XL_CELL_DATE,
XL_CELL_NUMBER
)
from .formula import * # is constrained by __all__
from .book import Book, colname
from .sheet import empty_cell
from .xldate import XLDateError, xldate_as_tuple, xldate_as_datetime
from .xlsx import X12Book
if sys.version.startswith("IronPython"):
# print >> sys.stderr, "...importing encodings"
import encodings
try:
import mmap
MMAP_AVAILABLE = 1
except ImportError:
MMAP_AVAILABLE = 0
USE_MMAP = MMAP_AVAILABLE
def open_workbook(filename=None,
logfile=sys.stdout,
verbosity=0,
use_mmap=USE_MMAP,
file_contents=None,
encoding_override=None,
formatting_info=False,
on_demand=False,
ragged_rows=False,
):
"""
Open a spreadsheet file for data extraction.
:param filename: The path to the spreadsheet file to be opened.
:param logfile: An open file to which messages and diagnostics are written.
:param verbosity: Increases the volume of trace material written to the
logfile.
:param use_mmap:
Whether to use the mmap module is determined heuristically.
Use this arg to override the result.
Current heuristic: mmap is used if it exists.
:param file_contents:
A string or an :class:`mmap.mmap` object or some other behave-alike
object. If ``file_contents`` is supplied, ``filename`` will not be used,
except (possibly) in messages.
:param encoding_override:
Used to overcome missing or bad codepage information
in older-version files. See :doc:`unicode`.
:param formatting_info:
The default is ``False``, which saves memory.
In this case, "Blank" cells, which are those with their own formatting
information but no data, are treated as empty by ignoring the file's
``BLANK`` and ``MULBLANK`` records.
This cuts off any bottom or right "margin" of rows of empty or blank
cells.
Only :meth:`~xlrd.sheet.Sheet.cell_value` and
:meth:`~xlrd.sheet.Sheet.cell_type` are available.
When ``True``, formatting information will be read from the spreadsheet
file. This provides all cells, including empty and blank cells.
Formatting information is available for each cell.
Note that this will raise a NotImplementedError when used with an
xlsx file.
:param on_demand:
Governs whether sheets are all loaded initially or when demanded
by the caller. See :doc:`on_demand`.
:param ragged_rows:
The default of ``False`` means all rows are padded out with empty cells so
that all rows have the same size as found in
:attr:`~xlrd.sheet.Sheet.ncols`.
``True`` means that there are no empty cells at the ends of rows.
This can result in substantial memory savings if rows are of widely
varying sizes. See also the :meth:`~xlrd.sheet.Sheet.row_len` method.
:returns: An instance of the :class:`~xlrd.book.Book` class.
"""
peeksz = 4
if file_contents:
peek = file_contents[:peeksz]
else:
with open(filename, "rb") as f:
peek = f.read(peeksz)
if peek == b"PK\x03\x04": # a ZIP file
if file_contents:
zf = zipfile.ZipFile(timemachine.BYTES_IO(file_contents))
else:
zf = zipfile.ZipFile(filename)
# Workaround for some third party files that use forward slashes and
# lower case names. We map the expected name in lowercase to the
# actual filename in the zip container.
component_names = dict([(X12Book.convert_filename(name), name)
for name in zf.namelist()])
if verbosity:
logfile.write('ZIP component_names:\n')
pprint.pprint(component_names, logfile)
if 'xl/workbook.xml' in component_names:
from . import xlsx
bk = xlsx.open_workbook_2007_xml(
zf,
component_names,
logfile=logfile,
verbosity=verbosity,
use_mmap=use_mmap,
formatting_info=formatting_info,
on_demand=on_demand,
ragged_rows=ragged_rows,
)
return bk
if 'xl/workbook.bin' in component_names:
raise XLRDError('Excel 2007 xlsb file; not supported')
if 'content.xml' in component_names:
raise XLRDError('Openoffice.org ODS file; not supported')
raise XLRDError('ZIP file contents not a known type of workbook')
from . import book
bk = book.open_workbook_xls(
filename=filename,
logfile=logfile,
verbosity=verbosity,
use_mmap=use_mmap,
file_contents=file_contents,
encoding_override=encoding_override,
formatting_info=formatting_info,
on_demand=on_demand,
ragged_rows=ragged_rows,
)
return bk
def dump(filename, outfile=sys.stdout, unnumbered=False):
"""
For debugging: dump an XLS file's BIFF records in char & hex.
:param filename: The path to the file to be dumped.
:param outfile: An open file, to which the dump is written.
:param unnumbered: If true, omit offsets (for meaningful diffs).
"""
from .biffh import biff_dump
bk = Book()
bk.biff2_8_load(filename=filename, logfile=outfile, )
biff_dump(bk.mem, bk.base, bk.stream_len, 0, outfile, unnumbered)
def count_records(filename, outfile=sys.stdout):
"""
For debugging and analysis: summarise the file's BIFF records.
ie: produce a sorted file of ``(record_name, count)``.
:param filename: The path to the file to be summarised.
:param outfile: An open file, to which the summary is written.
"""
from .biffh import biff_count_records
bk = Book()
bk.biff2_8_load(filename=filename, logfile=outfile, )
biff_count_records(bk.mem, bk.base, bk.stream_len, outfile)
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