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# -*- encoding: utf-8 -*-
##############################################################################
#
# Copyright (C) 2009 EduSense BV (<http://www.edusense.nl>)
# 2011 Therp BV (<http://therp.nl>)
# All Rights Reserved
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
##############################################################################
'''
This parser follows the Dutch Banking Tools specifications which are
empirically recreated in this module.
Dutch Banking Tools uses the concept of 'Afschrift' or Bank Statement.
Every transaction is bound to a Bank Statement. As such, this module generates
Bank Statements along with Bank Transactions.
'''
from account_banking.parsers import models
from account_banking.parsers.convert import str2date
from account_banking.sepa import postalcode
from tools.translate import _
from osv import osv
import re
import csv
__all__ = ['parser']
bt = models.mem_bank_transaction
class transaction_message(object):
'''
A auxiliary class to validate and coerce read values
'''
attrnames = [
'local_account', 'local_currency', 'date', 'u1', 'u2', 'date2',
'transferred_amount', 'blob',
]
def __init__(self, values, subno):
'''
Initialize own dict with attributes and coerce values to right type
'''
if len(self.attrnames) != len(values):
raise ValueError, \
_('Invalid transaction line: expected %d columns, found '
'%d') % (len(self.attrnames), len(values))
''' Strip all values except the blob '''
for (key, val) in zip(self.attrnames, values):
self.__dict__[key] = key == 'blob' and val or val.strip()
# for lack of a standardized locale function to parse amounts
self.local_account = self.local_account.zfill(10)
self.transferred_amount = float(
self.transferred_amount.replace(',', '.'))
self.execution_date = str2date(self.date, '%Y%m%d')
self.effective_date = str2date(self.date, '%Y%m%d')
# Set statement_id based on week number
self.statement_id = self.effective_date.strftime('%Yw%W')
self.id = str(subno).zfill(4)
class transaction(models.mem_bank_transaction):
'''
Implementation of transaction communication class for account_banking.
'''
attrnames = ['local_account', 'local_currency', 'transferred_amount',
'blob', 'execution_date', 'effective_date', 'id',
]
type_map = {
# retrieved from online help in the Triodos banking application
'BEA': bt.PAYMENT_TERMINAL, # Pin
'GEA': bt.BANK_TERMINAL, # ATM
'COSTS': bt.BANK_COSTS,
'BANK': bt.ORDER,
'GIRO': bt.ORDER,
'INTL': bt.ORDER, # international order
'UNKN': bt.ORDER, # everything else
}
def __init__(self, line, *args, **kwargs):
'''
Initialize own dict with read values.
'''
super(transaction, self).__init__(*args, **kwargs)
# Copy attributes from auxiliary class to self.
for attr in self.attrnames:
setattr(self, attr, getattr(line, attr))
# Initialize other attributes
self.transfer_type = 'UNKN'
self.remote_account = ''
self.remote_owner = ''
self.reference = ''
self.message = ''
# Decompose structured messages
self.parse_message()
def is_valid(self):
if not self.error_message:
if not self.transferred_amount:
self.error_message = "No transferred amount"
elif not self.execution_date:
self.error_message = "No execution date"
elif not self.remote_account and self.transfer_type not in [
'BEA', 'GEA', 'COSTS', 'UNKN',
]:
self.error_message = _('No remote account for transaction type '
'%s') % self.transfer_type
if self.error_message:
raise osv.except_osv(_('Error !'), _(self.error_message))
return not self.error_message
def parse_message(self):
'''
Parse structured message parts into appropriate attributes
'''
def split_blob(line):
# here we split up the blob, which the last field in a tab
# separated statement line the blob is a *space separated* fixed
# field format with field length 32. Empty fields are ignored
col = 0
size = 33
res = []
while(len(line) > col * size):
if line[col * size : (col + 1) * size - 1].strip():
res.append(line[col * size : (col + 1) * size - 1])
col += 1
return res
def parse_type(field):
# here we process the first field, which identifies the statement type
# and in case of certain types contains additional information
transfer_type = 'UNKN'
remote_account = False
remote_owner = False
if field.startswith('GIRO '):
transfer_type = 'GIRO'
# columns 6 to 14 contain the left or right aligned account number
remote_account = field[:15].strip().zfill(10)
# column 15 contains a space
# columns 16 to 31 contain remote owner
remote_owner = field[16:32].strip() or False
elif field.startswith('BEA '):
transfer_type = 'BEA'
# columns 6 to 16 contain the terminal identifier
# column 17 contains a space
# columns 18 to 31 contain date and time in DD.MM.YY/HH.MM format
elif field.startswith('GEA '):
transfer_type = 'GEA'
# columns 6 to 16 contain the terminal identifier
# column 17 contains a space
# columns 18 to 31 contain date and time in DD.MM.YY/HH.MM format
elif field.startswith('MAANDBIJDRAGE ABNAMRO'):
transfer_type = 'COSTS'
elif re.match("^\s([0-9]+\.){3}[0-9]+\s", field):
transfer_type = 'BANK'
remote_account = field[1:13].strip().replace('.', '').zfill(10)
# column 14 to 31 is either empty or contains the remote owner
remote_owner = field[14:32].strip()
elif re.match("^EL[0-9]{13}I", field):
transfer_type = 'INTL'
return (transfer_type, remote_account, remote_owner)
fields = split_blob(self.blob)
(self.transfer_type, self.remote_account, self.remote_owner) = parse_type(fields[0])
# extract other information depending on type
if self.transfer_type == 'GIRO':
self.message = ' '.join(field.strip() for field in fields[1:])
elif self.transfer_type == 'BEA':
# second column contains remote owner and bank pass identification
self.remote_owner = len(fields) > 1 and fields[1].split(',')[0].strip() or False
# column 2 and up can contain additional messsages
# (such as transaction costs or currency conversion)
self.message = ' '.join(field.strip() for field in fields)
elif self.transfer_type == 'BANK':
# second column contains the remote owner or the first message line
if not self.remote_owner:
self.remote_owner = len(fields) > 1 and fields[1].strip() or False
self.message = ' '.join(field.strip() for field in fields[2:])
else:
self.message = ' '.join(field.strip() for field in fields[1:])
elif self.transfer_type == 'INTL':
# first column seems to consist of some kind of international transaction id
self.reference = fields[0].strip()
# second column seems to contain remote currency and amount
# to be processed in a later release of this module
self.message = len(fields) > 1 and fields[1].strip() or False
# third column contains iban, preceeded by a slash forward
if len(fields) > 2:
if fields[2].startswith('/'):
self.remote_account = fields[2][1:].strip()
else:
self.message += ' ' + fields[2].strip()
# fourth column contains remote owner
self.remote_owner = (len(fields) > 3 and fields[3].strip() or
False)
self.message += ' ' + (
' '.join(field.strip() for field in fields[4:]))
else:
self.message = ' '.join(field.strip() for field in fields)
if not self.reference:
# the reference is sometimes flagged by the prefix "BETALINGSKENM."
# but can be any numeric line really
refexpr = re.compile("^\s*(BETALINGSKENM\.)?\s*([0-9]+ ?)+\s*$")
for field in fields[1:]:
m = refexpr.match(field)
if m:
self.reference = m.group(2)
break
class statement(models.mem_bank_statement):
'''
Implementation of bank_statement communication class of account_banking
'''
def __init__(self, msg, *args, **kwargs):
'''
Set decent start values based on first transaction read
'''
super(statement, self).__init__(*args, **kwargs)
self.id = msg.statement_id
self.local_account = msg.local_account
self.date = str2date(msg.date, '%Y%m%d')
self.start_balance = self.end_balance = 0 # msg.start_balance
self.import_transaction(msg)
def import_transaction(self, msg):
'''
Import a transaction and keep some house holding in the mean time.
'''
trans = transaction(msg)
self.end_balance += trans.transferred_amount
self.transactions.append(trans)
class parser(models.parser):
code = 'ABNAM'
country_code = 'NL'
name = _('Abnamro (NL)')
doc = _('''\
The Dutch Abnamro format is a tab separated text format. The last of these
fields is itself a fixed length array containing transaction type, remote
account and owner. The bank does not provide a formal specification of the
format. Transactions are not explicitely tied to bank statements, although
each file covers a period of two weeks.
''')
def parse(self, cr, data):
result = []
stmnt = None
lines = data.split('\n')
# Transaction lines are not numbered, so keep a tracer
subno = 0
statement_id = False
for line in csv.reader(lines, delimiter = '\t', quoting=csv.QUOTE_NONE):
# Skip empty (last) lines
if not line:
continue
subno += 1
msg = transaction_message(line, subno)
if not statement_id:
statement_id = self.get_unique_statement_id(
cr, msg.effective_date.strftime('%Yw%W'))
msg.statement_id = statement_id
if stmnt:
stmnt.import_transaction(msg)
else:
stmnt = statement(msg)
result.append(stmnt)
return result
# vim:expandtab:smartindent:tabstop=4:softtabstop=4:shiftwidth=4:
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