from http.server import BaseHTTPRequestHandler, HTTPServer
import sys
import os
+import html
+from urllib.parse import parse_qs, urlparse
hostName = "localhost"
serverPort = 8082
start_line = 0
bookings = []
comments = []
+ lines += [''] # to ensure a booking-ending last line
for i, line in enumerate(lines):
prefix = f"line {i}"
# we start with the case of an utterly empty line
except IndexError:
raise HandledException(f"{prefix} bad description: {description}")
inside_booking = True
+ booking_lines += [non_comment]
continue
# otherwise, read as transfer data
toks = non_comment.split() # ignore specification's allowance of single spaces in names
prefix = f"booking at line {self.start_line}"
sums = {}
empty_values = 0
- for line in self.lines:
+ for line in self.lines[1:]:
if line == '':
continue
_, amount, currency = line
account_changes = {}
debt = {}
sink_account = None
- for line in self.lines:
+ for line in self.lines[1:]:
if line == '':
continue
account, amount, currency = line
class Database:
- def __init__(self, load_from_file=True):
+ def __init__(self):
db_name = "_ledger"
self.db_file = db_name + ".json"
self.lock_file = db_name+ ".lock"
self.bookings = []
self.comments = []
- if load_from_file and os.path.exists(self.db_file):
+ self.real_lines = []
+ if os.path.exists(self.db_file):
with open(self.db_file, "r") as f:
- ret = parse_lines(f.readlines())
- self.bookings += ret[0]
- self.comments += ret[1]
+ self.real_lines += f.readlines()
+ ret = parse_lines(self.real_lines)
+ self.bookings += ret[0]
+ self.comments += ret[1]
+
+ def get_lines(self, start, end):
+ return db.real_lines[start:end]
+
+ def replace(self, start, end, lines):
+ import shutil
+ if os.path.exists(self.lock_file):
+ raise HandledException('Sorry, lock file!')
+ if os.path.exists(self.db_file):
+ shutil.copy(self.db_file, self.db_file + ".bak")
+ f = open(self.lock_file, 'w+')
+ f.close()
+ text = ''.join(self.real_lines[:start]) + '\n'.join(lines) + ''.join(self.real_lines[end:])
+ with open(self.db_file, 'w') as f:
+ f.write(text);
+ os.remove(self.lock_file)
def append(self, lines):
import shutil
class MyServer(BaseHTTPRequestHandler):
- header = '<html><meta charset="UTF-8"><body><a href="/ledger">ledger</a> <a href="/balance">balance</a> <a href="/add">add</a><hr />'
- footer = '</body><html>'
+ header = """<html>
+<meta charset="UTF-8">
+<body>
+<a href="/ledger">ledger</a>
+<a href="/balance">balance</a>
+<a href="/add_free">add free</a>
+<a href="/add_structured">add structured</a>
+<hr />
+"""
+ footer = "</body>\n<html>"
def do_POST(self):
- from urllib.parse import parse_qs
length = int(self.headers['content-length'])
postvars = parse_qs(self.rfile.read(length).decode(), keep_blank_values=1)
- lines = postvars['booking'][0].splitlines()
+ parsed_url = urlparse(self.path)
+ if '/add_structured' == parsed_url.path:
+ n_lines = int(len(postvars) / 4)
+ date = postvars['date'][0]
+ description = postvars['description'][0]
+ start_comment = postvars['line_0_comment'][0]
+ lines = [f'{date} {description} ; {start_comment}']
+ for i in range(1, n_lines):
+ account = postvars[f'line_{i}_account'][0]
+ amount = postvars[f'line_{i}_amount'][0]
+ currency = postvars[f'line_{i}_currency'][0]
+ comment = postvars[f'line_{i}_comment'][0]
+ new_main = f'{account} {amount} {currency}'
+ if '' == new_main.rstrip() == comment.rstrip(): # don't write empty lines
+ continue
+ new_line = new_main
+ if comment.rstrip() != '':
+ new_line += f' ; {comment}'
+ lines += [new_line]
+ elif '/add_free' == parsed_url.path:
+ lines = postvars['booking'][0].splitlines()
+ start = int(postvars['start'][0])
+ end = int(postvars['end'][0])
try:
- bookings, comments = parse_lines(lines)
- db.append(lines)
- self.send_response(200)
+ _, _ = parse_lines(lines)
+ if start == end == 0:
+ db.append(lines)
+ else:
+ db.replace(start, end, lines)
+ self.send_response(301)
+ self.send_header('Location', '/')
self.end_headers()
- page = f"{self.header}Success!{self.footer}"
- self.wfile.write(bytes(page, "utf-8"))
except HandledException as e:
self.send_response(400)
self.end_headers()
- page = f"{self.header}{e}{self.footer}"
+ page = f'{self.header}ERROR: {e}{self.footer}'
self.wfile.write(bytes(page, "utf-8"))
def do_GET(self):
self.send_header("Content-type", "text/html")
self.end_headers()
db = Database()
+ parsed_url = urlparse(self.path)
page = self.header + ''
- if self.path == '/balance':
+ params = parse_qs(parsed_url.query)
+ start = int(params.get('start', ['0'])[0])
+ end = int(params.get('end', ['0'])[0])
+ if parsed_url.path == '/balance':
page += self.balance_as_html(db)
- elif self.path == '/add':
- page += self.add()
+ elif parsed_url.path == '/add_free':
+ page += self.add_free(db, start, end)
+ elif parsed_url.path == '/add_structured':
+ bonus_lines = int(params.get('bonus_lines', ['0'])[0])
+ page += self.add_structured(db, start, end)
else:
page += self.ledger_as_html(db)
page += self.footer
def ledger_as_html(self, db):
lines = []
+ line_sep = '<br />'
for comment in db.comments:
- lines += [f"; {comment}" if comment != '' else '']
+ line = f' ; {comment}' if comment != '' else ''
+ lines += [line + line_sep]
for booking in db.bookings:
i = booking.start_line
- suffix = f" {lines[i]}" if len(lines[i]) > 0 else ""
- lines[i] = f"{booking.date_string} {booking.description}{suffix}"
- for booking_line in booking.lines:
+ suffix = lines[i]
+ lines[i] = f'<p>{booking.date_string} {booking.description}{suffix}'
+ for booking_line in booking.lines[1:]:
i += 1
if booking_line == '':
continue
- suffix = f" {lines[i]}" if len(lines[i]) > 0 else ""
- value = f" {booking_line[1]} {booking_line[2]}" if booking_line[1] else ""
- lines[i] = f"{booking_line[0]}{value}{suffix}"
- content = "\n".join(lines)
- return f"<pre>{content}</pre>"
+ suffix = f' {lines[i]}' if len(lines[i]) > 0 else ''
+ value = f' {booking_line[1]} {booking_line[2]}' if booking_line[1] else ''
+ lines[i] = f'{booking_line[0]}{value}{suffix}'
+ lines[i] = lines[i][:-len(line_sep)] + f"""</p>
+edit:
+<a href="/add_structured?start={booking.start_line}&end={i+1}">structured</a>
+/ <a href="/add_free?start={booking.start_line}&end={i+1}">free</a>
+<br />"""
+ return '\n'.join(lines)
+
+ def header_add_form(self, action):
+ return f"<form method=\"POST\" action=\"/{action}\">\n"
+
+ def footer_add_form(self, start, end):
+ return f"""
+<input type="hidden" name="start" value={start} />
+<input type="hidden" name="end" value={end} />
+<input type="submit">
+</form>"""
- def add(self):
- return '<form method="POST" action="/"><textarea name="booking" rows="8" cols="80"></textarea><input type="submit"></form>'
+ def add_free(self, db, start=0, end=0):
+ content = html.escape(''.join(db.get_lines(start, end)))
+ return f'{self.header_add_form("add_free")}<textarea name="booking" rows="8" cols="80">{content}</textarea>{self.footer_add_form(start, end)}'
+
+ def add_structured(self, db, start=0, end=0, bonus_lines=10):
+ import datetime
+ lines = db.get_lines(start, end)
+ bookings, comments = parse_lines(lines)
+ if len(bookings) > 1:
+ raise HandledException('can only edit single Booking')
+ input_lines = ''
+ last_line = 0
+ def inpu(name, val="", datalist=""):
+ val = val if val is not None else ""
+ safe_val = html.escape(str(val))
+ datalist_string = '' if datalist == '' else f'list="{datalist}"'
+ return f'<input name="{name}" value="{safe_val}" {datalist_string}/>'
+ if len(bookings) == 0:
+ today = str(datetime.datetime.now())[:10]
+ input_lines += f'{inpu("date", today)} {inpu("description", "", "descriptions")} ; {inpu("line_0_comment")}<br />'
+ last_line = 1
+ else:
+ booking = bookings[0]
+ last_line = len(comments)
+ input_lines += f'{inpu("date", booking.date_string)} {inpu("description", booking.description, "descriptions")} ; {inpu("line_0_comment", comments[0])}<br />'
+ for i in range(1, len(comments)):
+ account = amount = currency = ''
+ if i < len(booking.lines) and booking.lines[i] != '':
+ account = booking.lines[i][0]
+ amount = booking.lines[i][1]
+ currency = booking.lines[i][2]
+ input_lines += f'{inpu(f"line_{i}_account", account, "accounts")} {inpu(f"line_{i}_amount", amount)} {inpu(f"line_{i}_currency", currency, "currencies")} ; {inpu(f"line_{i}_comment", comments[i])}<br />'
+ for j in range(bonus_lines):
+ i = j + last_line
+ input_lines += f'{inpu(f"line_{i}_account", "", "accounts")} {inpu(f"line_{i}_amount", "", "amounts")} {inpu(f"line_{i}_currency", "€", "currencies")} ; {inpu(f"line_{i}_comment")}<br />'
+ datalist_sets = {'descriptions': set(), 'accounts': set(), 'currencies': set()}
+ for b in db.bookings:
+ datalist_sets['descriptions'].add(b.description)
+ for account, moneys in b.account_changes.items():
+ datalist_sets['accounts'].add(account)
+ for currency in moneys.keys():
+ datalist_sets['currencies'].add(currency)
+ def build_datalist(name):
+ datalist = f'<datalist id="{name}">' + "\n"
+ for item in datalist_sets[name]:
+ safe_item = html.escape(item)
+ datalist += f'<option value="{safe_item}">{safe_item}</option>' + "\n"
+ return f"{datalist}</datalist>\n"
+ datalists = build_datalist('descriptions')
+ datalists += build_datalist('accounts')
+ datalists += build_datalist('currencies')
+ return f'{self.header_add_form("add_structured")}{input_lines}{datalists}{self.footer_add_form(start, end)}'
db = Database()
-if __name__ == "__main__":
+if __name__ == "__main__":
webServer = HTTPServer((hostName, serverPort), MyServer)
print(f"Server started http://{hostName}:{serverPort}")
try:
projects / misc / blobdiff