from http.server import BaseHTTPRequestHandler, HTTPServer
import sys
import os
+from urllib.parse import parse_qs
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
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 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
footer = '</body><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()
+ start = int(postvars['start'][0])
+ end = int(postvars['end'][0])
try:
- bookings, comments = parse_lines(lines)
- db.append(lines)
+ _, _ = parse_lines(lines)
+ if start == end == 0:
+ db.append(lines)
+ else:
+ # raise HandledException(f'would write from {start} to {end}')
+ db.replace(start, end, lines)
self.send_response(200)
self.end_headers()
page = f"{self.header}Success!{self.footer}"
self.wfile.write(bytes(page, "utf-8"))
def do_GET(self):
+ from urllib.parse import urlparse
self.send_response(200)
self.send_header("Content-type", "text/html")
self.end_headers()
db = Database()
page = self.header + ''
- if self.path == '/balance':
+ parsed_url = urlparse(self.path)
+ if parsed_url.path == '/balance':
page += self.balance_as_html(db)
- elif self.path == '/add':
- page += self.add()
+ elif parsed_url.path == '/add':
+ params = parse_qs(parsed_url.query)
+ start = int(params.get('start', ['0'])[0])
+ end = int(params.get('end', ['0'])[0])
+ page += self.add(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}"
+ suffix = lines[i] # f" {lines[i]}" if len(lines[i]) > 0 else ""
+ lines[i] = f'<p>{booking.date_string} {booking.description}{suffix}'
for booking_line in booking.lines:
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><a href="/add?start={booking.start_line}&end={i+1}">edit</a><br />'
+ return '\n'.join(lines)
- def add(self):
- return '<form method="POST" action="/"><textarea name="booking" rows="8" cols="80"></textarea><input type="submit"></form>'
+ def add(self, db, start=0, end=0):
+ if start == end == 0:
+ content = ''
+ else:
+ content = ''.join(db.real_lines[start:end])
+ return f'<form method="POST" action="/"><textarea name="booking" rows="8" cols="80">{content}</textarea><input type="hidden" name="start" value={start} /><input type="hidden" name="end" value={end} /><input type="submit"></form>'
db = Database()
-if __name__ == "__main__":
+if __name__ == "__main__":
webServer = HTTPServer((hostName, serverPort), MyServer)
print(f"Server started http://{hostName}:{serverPort}")
try:
projects / misc / commitdiff