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#
# Copyright (C) 2007 Google Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""SpreadsheetsService extends the GDataService to streamline Google
Spreadsheets operations.
SpreadsheetService: Provides methods to query feeds and manipulate items.
Extends GDataService.
DictionaryToParamList: Function which converts a dictionary into a list of
URL arguments (represented as strings). This is a
utility function used in CRUD operations.
"""
__author__ = 'api.laurabeth@gmail.com (Laura Beth Lincoln)'
import gdata
import atom.service
import gdata.service
import gdata.spreadsheet
import atom
class Error(Exception):
"""Base class for exceptions in this module."""
pass
class RequestError(Error):
pass
class SpreadsheetsService(gdata.service.GDataService):
"""Client for the Google Spreadsheets service."""
def __init__(self, email=None, password=None, source=None,
server='spreadsheets.google.com', additional_headers=None,
**kwargs):
"""Creates a client for the Google Spreadsheets service.
Args:
email: string (optional) The user's email address, used for
authentication.
password: string (optional) The user's password.
source: string (optional) The name of the user's application.
server: string (optional) The name of the server to which a connection
will be opened. Default value: 'spreadsheets.google.com'.
**kwargs: The other parameters to pass to gdata.service.GDataService
constructor.
"""
gdata.service.GDataService.__init__(
self, email=email, password=password, service='wise', source=source,
server=server, additional_headers=additional_headers, **kwargs)
def GetSpreadsheetsFeed(self, key=None, query=None, visibility='private',
projection='full'):
"""Gets a spreadsheets feed or a specific entry if a key is defined
Args:
key: string (optional) The spreadsheet key defined in /ccc?key=
query: DocumentQuery (optional) Query parameters
Returns:
If there is no key, then a SpreadsheetsSpreadsheetsFeed.
If there is a key, then a SpreadsheetsSpreadsheet.
"""
uri = ('http://%s/feeds/spreadsheets/%s/%s'
% (self.server, visibility, projection))
if key is not None:
uri = '%s/%s' % (uri, key)
if query != None:
query.feed = uri
uri = query.ToUri()
if key:
return self.Get(uri,
converter=gdata.spreadsheet.SpreadsheetsSpreadsheetFromString)
else:
return self.Get(uri,
converter=gdata.spreadsheet.SpreadsheetsSpreadsheetsFeedFromString)
def GetWorksheetsFeed(self, key, wksht_id=None, query=None,
visibility='private', projection='full'):
"""Gets a worksheets feed or a specific entry if a wksht is defined
Args:
key: string The spreadsheet key defined in /ccc?key=
wksht_id: string (optional) The id for a specific worksheet entry
query: DocumentQuery (optional) Query parameters
Returns:
If there is no wksht_id, then a SpreadsheetsWorksheetsFeed.
If there is a wksht_id, then a SpreadsheetsWorksheet.
"""
uri = ('http://%s/feeds/worksheets/%s/%s/%s'
% (self.server, key, visibility, projection))
if wksht_id != None:
uri = '%s/%s' % (uri, wksht_id)
if query != None:
query.feed = uri
uri = query.ToUri()
if wksht_id:
return self.Get(uri,
converter=gdata.spreadsheet.SpreadsheetsWorksheetFromString)
else:
return self.Get(uri,
converter=gdata.spreadsheet.SpreadsheetsWorksheetsFeedFromString)
def AddWorksheet(self, title, row_count, col_count, key):
"""Creates a new worksheet in the desired spreadsheet.
The new worksheet is appended to the end of the list of worksheets. The
new worksheet will only have the available number of columns and cells
specified.
Args:
title: str The title which will be displayed in the list of worksheets.
row_count: int or str The number of rows in the new worksheet.
col_count: int or str The number of columns in the new worksheet.
key: str The spreadsheet key to the spreadsheet to which the new
worksheet should be added.
Returns:
A SpreadsheetsWorksheet if the new worksheet was created succesfully.
"""
new_worksheet = gdata.spreadsheet.SpreadsheetsWorksheet(
title=atom.Title(text=title),
row_count=gdata.spreadsheet.RowCount(text=str(row_count)),
col_count=gdata.spreadsheet.ColCount(text=str(col_count)))
return self.Post(new_worksheet,
'http://%s/feeds/worksheets/%s/private/full' % (self.server, key),
converter=gdata.spreadsheet.SpreadsheetsWorksheetFromString)
def UpdateWorksheet(self, worksheet_entry, url=None):
"""Changes the size and/or title of the desired worksheet.
Args:
worksheet_entry: SpreadsheetWorksheet The new contents of the
worksheet.
url: str (optional) The URL to which the edited worksheet entry should
be sent. If the url is None, the edit URL from the worksheet will
be used.
Returns:
A SpreadsheetsWorksheet with the new information about the worksheet.
"""
target_url = url or worksheet_entry.GetEditLink().href
return self.Put(worksheet_entry, target_url,
converter=gdata.spreadsheet.SpreadsheetsWorksheetFromString)
def DeleteWorksheet(self, worksheet_entry=None, url=None):
"""Removes the desired worksheet from the spreadsheet
Args:
worksheet_entry: SpreadsheetWorksheet (optional) The worksheet to
be deleted. If this is none, then the DELETE reqest is sent to
the url specified in the url parameter.
url: str (optaional) The URL to which the DELETE request should be
sent. If left as None, the worksheet's edit URL is used.
Returns:
True if the worksheet was deleted successfully.
"""
if url:
target_url = url
else:
target_url = worksheet_entry.GetEditLink().href
return self.Delete(target_url)
def GetCellsFeed(self, key, wksht_id='default', cell=None, query=None,
visibility='private', projection='full'):
"""Gets a cells feed or a specific entry if a cell is defined
Args:
key: string The spreadsheet key defined in /ccc?key=
wksht_id: string The id for a specific worksheet entry
cell: string (optional) The R1C1 address of the cell
query: DocumentQuery (optional) Query parameters
Returns:
If there is no cell, then a SpreadsheetsCellsFeed.
If there is a cell, then a SpreadsheetsCell.
"""
uri = ('http://%s/feeds/cells/%s/%s/%s/%s'
% (self.server, key, wksht_id, visibility, projection))
if cell != None:
uri = '%s/%s' % (uri, cell)
if query != None:
query.feed = uri
uri = query.ToUri()
if cell:
return self.Get(uri,
converter=gdata.spreadsheet.SpreadsheetsCellFromString)
else:
return self.Get(uri,
converter=gdata.spreadsheet.SpreadsheetsCellsFeedFromString)
def GetListFeed(self, key, wksht_id='default', row_id=None, query=None,
visibility='private', projection='full'):
"""Gets a list feed or a specific entry if a row_id is defined
Args:
key: string The spreadsheet key defined in /ccc?key=
wksht_id: string The id for a specific worksheet entry
row_id: string (optional) The row_id of a row in the list
query: DocumentQuery (optional) Query parameters
Returns:
If there is no row_id, then a SpreadsheetsListFeed.
If there is a row_id, then a SpreadsheetsList.
"""
uri = ('http://%s/feeds/list/%s/%s/%s/%s'
% (self.server, key, wksht_id, visibility, projection))
if row_id is not None:
uri = '%s/%s' % (uri, row_id)
if query is not None:
query.feed = uri
uri = query.ToUri()
if row_id:
return self.Get(uri,
converter=gdata.spreadsheet.SpreadsheetsListFromString)
else:
return self.Get(uri,
converter=gdata.spreadsheet.SpreadsheetsListFeedFromString)
def UpdateCell(self, row, col, inputValue, key, wksht_id='default'):
"""Updates an existing cell.
Args:
row: int The row the cell to be editted is in
col: int The column the cell to be editted is in
inputValue: str the new value of the cell
key: str The key of the spreadsheet in which this cell resides.
wksht_id: str The ID of the worksheet which holds this cell.
Returns:
The updated cell entry
"""
row = str(row)
col = str(col)
# make the new cell
new_cell = gdata.spreadsheet.Cell(row=row, col=col, inputValue=inputValue)
# get the edit uri and PUT
cell = 'R%sC%s' % (row, col)
entry = self.GetCellsFeed(key, wksht_id, cell)
for a_link in entry.link:
if a_link.rel == 'edit':
entry.cell = new_cell
return self.Put(entry, a_link.href,
converter=gdata.spreadsheet.SpreadsheetsCellFromString)
def _GenerateCellsBatchUrl(self, spreadsheet_key, worksheet_id):
return ('http://spreadsheets.google.com/feeds/cells/%s/%s/'
'private/full/batch' % (spreadsheet_key, worksheet_id))
def ExecuteBatch(self, batch_feed, url=None, spreadsheet_key=None,
worksheet_id=None,
converter=gdata.spreadsheet.SpreadsheetsCellsFeedFromString):
"""Sends a batch request feed to the server.
The batch request needs to be sent to the batch URL for a particular
worksheet. You can specify the worksheet by providing the spreadsheet_key
and worksheet_id, or by sending the URL from the cells feed's batch link.
Args:
batch_feed: gdata.spreadsheet.SpreadsheetsCellFeed A feed containing
BatchEntry elements which contain the desired CRUD operation and
any necessary data to modify a cell.
url: str (optional) The batch URL for the cells feed to which these
changes should be applied. This can be found by calling
cells_feed.GetBatchLink().href.
spreadsheet_key: str (optional) Used to generate the batch request URL
if the url argument is None. If using the spreadsheet key to
generate the URL, the worksheet id is also required.
worksheet_id: str (optional) Used if the url is not provided, it is
oart of the batch feed target URL. This is used with the spreadsheet
key.
converter: Function (optional) Function to be executed on the server's
response. This function should take one string as a parameter. The
default value is SpreadsheetsCellsFeedFromString which will turn the result
into a gdata.spreadsheet.SpreadsheetsCellsFeed object.
Returns:
A gdata.BatchFeed containing the results.
"""
if url is None:
url = self._GenerateCellsBatchUrl(spreadsheet_key, worksheet_id)
return self.Post(batch_feed, url, converter=converter)
def InsertRow(self, row_data, key, wksht_id='default'):
"""Inserts a new row with the provided data
Args:
uri: string The post uri of the list feed
row_data: dict A dictionary of column header to row data
Returns:
The inserted row
"""
new_entry = gdata.spreadsheet.SpreadsheetsList()
for k, v in row_data.iteritems():
new_custom = gdata.spreadsheet.Custom()
new_custom.column = k
new_custom.text = v
new_entry.custom[new_custom.column] = new_custom
# Generate the post URL for the worksheet which will receive the new entry.
post_url = 'http://spreadsheets.google.com/feeds/list/%s/%s/private/full'%(
key, wksht_id)
return self.Post(new_entry, post_url,
converter=gdata.spreadsheet.SpreadsheetsListFromString)
def UpdateRow(self, entry, new_row_data):
"""Updates a row with the provided data
If you want to add additional information to a row, it is often
easier to change the values in entry.custom, then use the Put
method instead of UpdateRow. This UpdateRow method will replace
the contents of the row with new_row_data - it will change all columns
not just the columns specified in the new_row_data dict.
Args:
entry: gdata.spreadsheet.SpreadsheetsList The entry to be updated
new_row_data: dict A dictionary of column header to row data
Returns:
The updated row
"""
entry.custom = {}
for k, v in new_row_data.iteritems():
new_custom = gdata.spreadsheet.Custom()
new_custom.column = k
new_custom.text = v
entry.custom[k] = new_custom
for a_link in entry.link:
if a_link.rel == 'edit':
return self.Put(entry, a_link.href,
converter=gdata.spreadsheet.SpreadsheetsListFromString)
def DeleteRow(self, entry):
"""Deletes a row, the provided entry
Args:
entry: gdata.spreadsheet.SpreadsheetsList The row to be deleted
Returns:
The delete response
"""
for a_link in entry.link:
if a_link.rel == 'edit':
return self.Delete(a_link.href)
class DocumentQuery(gdata.service.Query):
def _GetTitleQuery(self):
return self['title']
def _SetTitleQuery(self, document_query):
self['title'] = document_query
title = property(_GetTitleQuery, _SetTitleQuery,
doc="""The title query parameter""")
def _GetTitleExactQuery(self):
return self['title-exact']
def _SetTitleExactQuery(self, document_query):
self['title-exact'] = document_query
title_exact = property(_GetTitleExactQuery, _SetTitleExactQuery,
doc="""The title-exact query parameter""")
class CellQuery(gdata.service.Query):
def _GetMinRowQuery(self):
return self['min-row']
def _SetMinRowQuery(self, cell_query):
self['min-row'] = cell_query
min_row = property(_GetMinRowQuery, _SetMinRowQuery,
doc="""The min-row query parameter""")
def _GetMaxRowQuery(self):
return self['max-row']
def _SetMaxRowQuery(self, cell_query):
self['max-row'] = cell_query
max_row = property(_GetMaxRowQuery, _SetMaxRowQuery,
doc="""The max-row query parameter""")
def _GetMinColQuery(self):
return self['min-col']
def _SetMinColQuery(self, cell_query):
self['min-col'] = cell_query
min_col = property(_GetMinColQuery, _SetMinColQuery,
doc="""The min-col query parameter""")
def _GetMaxColQuery(self):
return self['max-col']
def _SetMaxColQuery(self, cell_query):
self['max-col'] = cell_query
max_col = property(_GetMaxColQuery, _SetMaxColQuery,
doc="""The max-col query parameter""")
def _GetRangeQuery(self):
return self['range']
def _SetRangeQuery(self, cell_query):
self['range'] = cell_query
range = property(_GetRangeQuery, _SetRangeQuery,
doc="""The range query parameter""")
def _GetReturnEmptyQuery(self):
return self['return-empty']
def _SetReturnEmptyQuery(self, cell_query):
self['return-empty'] = cell_query
return_empty = property(_GetReturnEmptyQuery, _SetReturnEmptyQuery,
doc="""The return-empty query parameter""")
class ListQuery(gdata.service.Query):
def _GetSpreadsheetQuery(self):
return self['sq']
def _SetSpreadsheetQuery(self, list_query):
self['sq'] = list_query
sq = property(_GetSpreadsheetQuery, _SetSpreadsheetQuery,
doc="""The sq query parameter""")
def _GetOrderByQuery(self):
return self['orderby']
def _SetOrderByQuery(self, list_query):
self['orderby'] = list_query
orderby = property(_GetOrderByQuery, _SetOrderByQuery,
doc="""The orderby query parameter""")
def _GetReverseQuery(self):
return self['reverse']
def _SetReverseQuery(self, list_query):
self['reverse'] = list_query
reverse = property(_GetReverseQuery, _SetReverseQuery,
doc="""The reverse query parameter""")
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