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workbook.py
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workbook.py
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# file openpyxl/workbook.py
# Copyright (c) 2010-2011 openpyxl
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
#
# @license: http://www.opensource.org/licenses/mit-license.php
# @author: see AUTHORS file
"""Workbook is the top-level container for all document information."""
__docformat__ = "restructuredtext en"
# Python stdlib imports
import datetime
import os
import threading
# package imports
from spreadsheet.openpyxl.worksheet import Worksheet
from spreadsheet.openpyxl.writer.dump_worksheet import DumpWorksheet, save_dump
from spreadsheet.openpyxl.writer.strings import StringTableBuilder
from spreadsheet.openpyxl.namedrange import NamedRange
from spreadsheet.openpyxl.style import Style
from spreadsheet.openpyxl.writer.excel import save_workbook
from spreadsheet.openpyxl.shared.exc import ReadOnlyWorkbookException
from spreadsheet.openpyxl.shared.date_time import CALENDAR_WINDOWS_1900, CALENDAR_MAC_1904
class DocumentProperties(object):
"""High-level properties of the document."""
def __init__(self):
self.creator = 'Unknown'
self.last_modified_by = self.creator
self.created = datetime.datetime.now()
self.modified = datetime.datetime.now()
self.title = 'Untitled'
self.subject = ''
self.description = ''
self.keywords = ''
self.category = ''
self.company = 'Microsoft Corporation'
self.excel_base_date = CALENDAR_WINDOWS_1900
class DocumentSecurity(object):
"""Security information about the document."""
def __init__(self):
self.lock_revision = False
self.lock_structure = False
self.lock_windows = False
self.revision_password = ''
self.workbook_password = ''
class Workbook(object):
"""Workbook is the container for all other parts of the document."""
def __init__(self, optimized_write=False, encoding='utf-8'):
self.worksheets = []
self._active_sheet_index = 0
self._named_ranges = []
self.properties = DocumentProperties()
self.style = Style()
self.security = DocumentSecurity()
self.__optimized_write = optimized_write
self.__optimized_read = False
self.__thread_local_data = threading.local()
self.strings_table_builder = StringTableBuilder()
self.loaded_theme = None
self.encoding = encoding
if not optimized_write:
self.worksheets.append(Worksheet(self))
@property
def _local_data(self):
return self.__thread_local_data
@property
def excel_base_date(self):
return self.properties.excel_base_date
def _set_optimized_read(self):
self.__optimized_read = True
def get_active_sheet(self):
"""Returns the current active sheet."""
return self.worksheets[self._active_sheet_index]
def create_sheet(self, index=None, title=None):
"""Create a worksheet (at an optional index).
:param index: optional position at which the sheet will be inserted
:type index: int
"""
if self.__optimized_read:
raise ReadOnlyWorkbookException('Cannot create new sheet in a read-only workbook')
if self.__optimized_write :
new_ws = DumpWorksheet(parent_workbook=self, title=title)
else:
if title is not None:
new_ws = Worksheet(parent_workbook = self, title=title)
else:
new_ws = Worksheet(parent_workbook=self)
self.add_sheet(worksheet=new_ws, index=index)
return new_ws
def add_sheet(self, worksheet, index=None):
"""Add an existing worksheet (at an optional index)."""
assert isinstance(worksheet, Worksheet), "The parameter you have given is not of the type 'Worksheet'"
if index is None:
index = len(self.worksheets)
self.worksheets.insert(index, worksheet)
def remove_sheet(self, worksheet):
"""Remove a worksheet from this workbook."""
self.worksheets.remove(worksheet)
def get_sheet_by_name(self, name):
"""Returns a worksheet by its name.
Returns None if no worksheet has the name specified.
:param name: the name of the worksheet to look for
:type name: string
"""
requested_sheet = None
for sheet in self.worksheets:
if sheet.title == name:
requested_sheet = sheet
break
return requested_sheet
def get_index(self, worksheet):
"""Return the index of the worksheet."""
return self.worksheets.index(worksheet)
def get_sheet_names(self):
"""Returns the list of the names of worksheets in the workbook.
Names are returned in the worksheets order.
:rtype: list of strings
"""
return [s.title for s in self.worksheets]
def create_named_range(self, name, worksheet, range):
"""Create a new named_range on a worksheet"""
assert isinstance(worksheet, Worksheet)
named_range = NamedRange(name, [(worksheet, range)])
self.add_named_range(named_range)
def get_named_ranges(self):
"""Return all named ranges"""
return self._named_ranges
def add_named_range(self, named_range):
"""Add an existing named_range to the list of named_ranges."""
self._named_ranges.append(named_range)
def get_named_range(self, name):
"""Return the range specified by name."""
requested_range = None
for named_range in self._named_ranges:
if named_range.name == name:
requested_range = named_range
break
return requested_range
def remove_named_range(self, named_range):
"""Remove a named_range from this workbook."""
self._named_ranges.remove(named_range)
def save(self, filename):
"""Save the current workbook under the given `filename`.
Use this function instead of using an `ExcelWriter`.
.. warning::
When creating your workbook using `optimized_write` set to True,
you will only be able to call this function once. Subsequents attempts to
modify or save the file will raise an :class:`openpyxl.shared.exc.WorkbookAlreadySaved` exception.
"""
if self.__optimized_write:
save_dump(self, filename)
else:
save_workbook(self, filename)