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# -*- coding: utf-8 -*-
import re
import itertools
import logging
import locale
from datetime import datetime
from openpyxl import load_workbook
from contextlib import contextmanager
from ofxstatement.parser import StatementParser
from ofxstatement.plugin import Plugin
from ofxstatement.statement import Statement, StatementLine, generate_transaction_id
def take(n, iterable):
"""Return first n items of the iterable as a list."""
return list(itertools.islice(iterable, n))
@contextmanager
def scoped_setlocale(category, loc=None):
"""Scoped version of locale.setlocale()"""
orig = locale.getlocale(category)
try:
yield locale.setlocale(category, loc)
finally:
locale.setlocale(category, orig)
def atof(string, loc=None):
"""Locale aware atof function for our parser."""
with scoped_setlocale(locale.LC_NUMERIC, loc):
return locale.atof(string)
class SebStatementParser(StatementParser):
date_format = '%Y-%m-%d'
bank_id = 'SEB'
currency_id = 'SEK'
footer_regexps = [
'^Datum: -',
'^Datum: ([0-9]{4}-[0-9]{2}-[0-9]{2}) - ([0-9]{4}-[0-9]{2}-[0-9]{2})$'
]
def __init__(self, fin, locale=None, brief=False):
"""
Create a new SebStatementParser instance.
:param fin: filename to create parser for
:param brief: whenever to attempt replace description with a brief version i.e. all extra info removed
"""
self.locale = locale
self.brief = brief
self.workbook = load_workbook(filename=fin, read_only=True)
self.validate()
self.statement = self.parse_statement()
def validate(self):
"""
Naive validation to make sure that xlsx document is structured the way it was
when this parser was written.
:raises ValueError if workbook has invalid format
"""
try:
self._validate()
except AssertionError as e:
raise ValueError(e)
def _validate(self):
sheet = self.workbook.active
logging.info('Checking that sheet has at least 5 rows.')
rows = take(5, sheet.iter_rows())
assert len(rows) == 5
logging.info('Verifying that every row has 6 cells.')
assert type(rows) == list
for row in rows:
assert len(row) == 6
logging.info('Extracting values from every cell.')
rows = [[c.value for c in row] for row in rows]
logging.info('Verifying summary header.')
summary_header_row = rows[0]
assert ['Saldo', 'Disponibelt belopp', 'Beviljad kredit', None, None] == summary_header_row[1:]
logging.info('Verifying account id.')
summary_account_row = rows[1]
account_id = summary_account_row[0]
assert re.match('^[0-9]+$', account_id)
assert [None, None] == summary_account_row[-2:]
def is_footer(row):
for r in self.footer_regexps:
if re.match(r, row[0]):
return True
return False
logging.info('Verifying summary footer.')
summary_footer_row = rows[2]
assert is_footer(summary_footer_row)
assert [None, None, None, None, None] == summary_footer_row[1:]
logging.info('Verifying empty row.')
empty_row = rows[3]
assert [None, None, None, None, None, None] == empty_row
logging.info('Verifying statements header.')
statement_header_row = rows[4]
assert ['Bokföringsdatum', 'Valutadatum', 'Verifikationsnummer', 'Text/mottagare', 'Belopp', 'Saldo'] == statement_header_row
logging.info('Everything is OK!')
def parse_statement(self):
statement = Statement()
sheet = self.workbook.active
# We need only first 3 rows here.
rows = take(3, sheet.iter_rows())
rows = [[c.value for c in row] for row in rows]
assert len(rows) == 3
header_row, account_row, footer_row = rows
account_id, saldo, disponibelt_belopp, beviljad_kredit, _1, _2 = account_row
statement.account_id = account_id
statement.end_balance = atof(saldo, self.locale)
statement.bank_id = self.bank_id
statement.currency = self.currency_id
for r in self.footer_regexps:
m = re.match(r, footer_row[0])
if m and m.groups():
part_from, part_to = m.groups()
statement.start_date = self.parse_datetime(part_from)
statement.end_date = self.parse_datetime(part_to)
return statement
def split_records(self):
sheet = self.workbook.active
# Skip first 5 rows. Headers they are.
for row in itertools.islice(sheet.iter_rows(), 5, None):
yield [c.value for c in row]
def parse_record(self, row):
row = take(5, row)
stmt_line = StatementLine()
stmt_line.date = self.parse_datetime(row[0])
_ = self.parse_datetime(row[1]) # TODO: ???
stmt_line.refnum = row[2]
stmt_line.memo = row[3]
stmt_line.amount = row[4]
#
# Looks like SEB formats description for card transactions so it includes the actual purchase date
# within e.g. 'WIRSTRÖMS PU/14-12-31' and it means that description is 'WIRSTRÖMS PU' while the actual
# card operation is 2014-12-31.
#
# P.S. Wirströms Irish Pub is our favorite pub in Stockholm: http://www.wirstromspub.se
#
m = re.match('(.*)/([0-9]{2}-[0-9]{2}-[0-9]{2})$', stmt_line.memo)
if m:
card_memo, card_date = m.groups()
if self.brief:
stmt_line.memo = card_memo
stmt_line.date_user = datetime.strptime(card_date, '%y-%m-%d')
stmt_line.id = generate_transaction_id(stmt_line)
return stmt_line
def parse_bool(value):
if value in ('True', 'true', '1'):
return True
if value in ('False', 'false', '0'):
return False
raise ValueError("Can't parse boolean value: %s" % value)
class SebPlugin(Plugin):
def get_parser(self, fin):
kwargs = {
'locale': 'sv_SE'
}
if self.settings:
if 'locale' in self.settings:
kwargs['locale'] = parse_bool(self.settings.get('locale'))
if 'brief' in self.settings:
kwargs['brief'] = parse_bool(self.settings.get('brief'))
return SebStatementParser(fin, **kwargs)
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