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gnucash-xml-split.py
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gnucash-xml-split.py
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#!/usr/bin/env python3
# for python 2.x
#from __future__ import print_function
import argparse
import decimal
import gzip
import datetime
import uuid
from collections import defaultdict
from xml.etree import ElementTree
tzoff = None
nl = "\n"
nsdict = {}
for ns in ["gnc", "cd", "book", "slot", "cmdty", "price", "ts", "act", "trn", "split", "recurrence", "cust", "bgt", "addr", "vendor", "sx"]:
url = "http://www.gnucash.org/XML/" + ns
ElementTree.register_namespace(ns, url)
nsdict[ns] = url
class Account(object):
def __init__(self, name, guid, actype, parent=None,
commodity=None, description=None, name_full=None):
self.name = name
self.guid = guid
self.actype = actype
self.description = description
self.parent = parent
self.commodity = commodity
self.name_full = name_full
self.balance = decimal.Decimal(0)
def __repr__(self):
return "<Account {}>".format(self.guid)
def find_account(self, name):
for account, children, splits in self.walk():
if account.name == name:
return account
def is_gzip(fn):
f = open(fn, 'rb')
s = f.read(2)
f.close()
return s == b'\x1f\x8b'
def ns_tag(nstag):
ns, tag = nstag.split(':')
return '{' + nsdict[ns] + '}' + tag
def new_element(tag, text=None, tail=nl):
el = ElementTree.Element(ns_tag(tag))
el.text = text
el.tail = tail
return el
parser = argparse.ArgumentParser(description='GnuCash XML Splitter')
parser.add_argument('-i','--input', help='input file name',required=True)
parser.add_argument('-o','--output', help='output file name', required=True)
parser.add_argument('-y','--year', help='begin year of transations to extract', required=True)
parser.add_argument('-e','--end-year',help='end year of transactions', default='2442')
parser.add_argument('-n','--nozip', help='do not zip output files', action='store_true')
parser.add_argument('-z','--zero', help='zero starting balances in extracted file', action='store_true')
parser.add_argument('-q','--qif', help='write starting balances to .qif file', action='store_true')
args = parser.parse_args()
dtfrom = datetime.datetime.strptime(args.year + "-01-01 00:00:00", '%Y-%m-%d %H:%M:%S')
dtto = datetime.datetime.strptime(args.end_year + "-12-31 23:59:59", '%Y-%m-%d %H:%M:%S')
if is_gzip(args.input):
xmltree = ElementTree.parse(gzip.open(args.input, "rb"))
else:
xmltree = ElementTree.parse(args.input)
root = xmltree.getroot()
if root.tag != 'gnc-v2':
raise ValueError("File stream was not a valid GNU Cash v2 XML file")
root.tail = nl
book_count = 0
for book in root.findall('./gnc:book', nsdict):
book_count += 1
# create accountdict
accountdict = {}
for account in book.findall('gnc:account', nsdict):
name = account.find('act:name', nsdict).text
guid = account.find('act:id', nsdict).text
actype = account.find('act:type', nsdict).text
description = account.find('act:description', nsdict)
if description is not None:
description = description.text
if actype == 'ROOT':
parent = None
commodity = None
else:
parent = account.find('act:parent', nsdict).text
commodity = account.find('act:commodity/cmdty:id', nsdict).text
accountdict[guid] = Account(name=name,
description=description,
guid=guid,
parent=parent,
actype=actype,
commodity=commodity)
# add names to subaccounts
for acc_key in accountdict:
account = accountdict[acc_key]
if account.actype == 'ROOT':
account.name_full = ''
else:
ancestor = [account, accountdict[account.parent]]
while len(ancestor) > 1:
ances = ancestor[-1];
curr = ancestor[-2];
if ances.actype == 'ROOT':
curr.name_full = curr.name
ancestor.pop()
elif ances.name_full is not None:
curr.name_full = ances.name_full + ':' + curr.name
ancestor.pop()
else:
ancestor.append(accountdict[ances.parent])
# look at every transaction
keep_count = 0
prior_count = 0
later_count = 0
balance_count = 0
for transaction in book.findall('./gnc:transaction', nsdict):
datestr = transaction.find('./trn:date-posted/ts:date', nsdict).text
# '%z' is only in python 3.x
dt = datetime.datetime.strptime(datestr, '%Y-%m-%d %H:%M:%S %z').replace(tzinfo=None)
# for python 2.x
#dt = datetime.datetime.strptime(' '.join(datestr.split()[:2]), '%Y-%m-%d %H:%M:%S')
if not tzoff:
tzoff = datestr.split()[2]
if dt >= dtfrom and dt <= dtto:
# count transactions to be extracted
keep_count += 1
else:
if dt < dtfrom:
prior_count += 1
# for prior transactions, accumulate starting balance
for split in transaction.findall('trn:splits/trn:split', nsdict):
quantity = split.find("split:quantity", nsdict).text
account = accountdict[split.find("split:account", nsdict).text]
num, denom = quantity.split("/")
account.balance = account.balance + decimal.Decimal(num) / decimal.Decimal(denom)
else:
later_count += 1
# remove all transactions not in range
book.remove(transaction)
# reset count-data of transactions to the number in extracted portion
for count in book.findall('gnc:count-data', nsdict):
if count.get(ns_tag('cd:type')) == 'transaction':
count.text = str(keep_count)
if not args.zero and prior_count > 0:
if args.qif:
# create balancedict for starting balances
balancedict = defaultdict(list)
for acc_key in accountdict:
account = accountdict[acc_key]
if account.actype != 'ROOT' and account.actype != 'INCOME' and account.actype != 'EXPENSE' and account.actype != 'EQUITY' and account.balance != 0:
balancedict[account.commodity].append(account)
# write opening balances as .qif file
for cmdy_key in balancedict:
f = open(args.year + cmdy_key + '.qif', 'w')
print('!Account', file=f)
print('NEquity:Opening Balances:'+cmdy_key, file=f)
print('TOth A', file=f)
print('^', file=f)
print('!Type:Oth A', file=f)
print('D' + args.year + '-01-01', file=f)
for account in balancedict[cmdy_key]:
balance_count += 1
print('S' + account.name_full, file=f)
print('$' + str(-account.balance), file=f)
print('^', file=f)
f.close()
else:
# create new starting balance transaction
tran = new_element('gnc:transaction', nl)
tran.set('version', "2.0.0")
tran_id = new_element('trn:id', str(uuid.uuid4()).replace('-',''))
tran_id.set('type', "guid")
tran.append(tran_id)
tran_cur = new_element('trn:currency', nl)
tran_cur.append(new_element('cmdty:space', "ISO4217"))
tran_cur.append(new_element('cmdty:id', account.commodity))
tran.append(tran_cur)
posted = new_element('trn:date-posted', nl)
posted.append(new_element('ts:date',
str(int(args.year)-1) + "-12-31 00:00:00 " + tzoff))
tran.append(posted)
entered = new_element('trn:date-entered', nl)
entered.append(new_element('ts:date',
str(int(args.year)-1) + "-12-31 00:00:00 " + tzoff))
tran.append(entered)
tran.append(new_element('trn:description',
"Balance as of 31 December " + str(int(args.year)-1)))
splits = new_element('trn:splits', nl)
for acc_key in accountdict:
account = accountdict[acc_key]
if account.balance != 0:
balance_count += 1
splt = new_element('trn:split', nl)
splt_id = new_element('split:id', str(uuid.uuid4()).replace('-',''))
splt_id.set('type', "guid")
splt.append(splt_id)
splt.append(new_element('split:reconciled-state', "n"))
denom = 10 ** len((str(account.balance)+'.').split('.')[1])
denom = denom if denom >= 100 else 100
amount = "%d/%d" % (int(account.balance * denom), denom)
splt.append(new_element('split:value', amount))
splt.append(new_element('split:quantity', amount))
splt_acc = new_element('split:account', acc_key)
splt_acc.set('type', "guid")
splt.append(splt_acc)
splits.append(splt)
tran.append(splits)
book.append(tran)
# write tree with only specified years remaining
if args.nozip:
xmltree.write(args.output, encoding="utf-8", xml_declaration=True)
else:
f = gzip.open(args.output, 'wb')
xmltree.write(f, encoding="utf-8", xml_declaration=True)
f.close()
# TODO: only reports last book
if book_count == 1:
print("Wrote %d transactions to %s (%sgzipped)" % (
keep_count, args.output, 'not ' if args.nozip else ''))
print("Skipped %d prior transactions and %d later transactions" % (
prior_count, later_count))
if not args.zero and prior_count > 0:
if not args.qif:
print("Prior balance for %d accounts written as a starting balance transaction" % (
balance_count))
else:
print("Prior balance for %d accounts written to %d*.qif" % (
balance_count))
else:
print("Processed %d books" % (book_count))
### end ###