From 5deb2f51e435bc0e10a0e8c55ff61d63e56681e0 Mon Sep 17 00:00:00 2001 From: Bernard Blackham Date: Sat, 26 Jun 2004 09:38:39 +0000 Subject: [PATCH] Usable but ugly! --- sql-edition/servers/VendServer.py | 98 ++++++++++++++++++++++----- sql-edition/servers/VendingMachine.py | 8 ++- 2 files changed, 85 insertions(+), 21 deletions(-) diff --git a/sql-edition/servers/VendServer.py b/sql-edition/servers/VendServer.py index 25a24b6..9d8e0ae 100755 --- a/sql-edition/servers/VendServer.py +++ b/sql-edition/servers/VendServer.py @@ -1,4 +1,5 @@ #!/usr/bin/python +# vim:ts=4 import sys, os, string, time, re, pwd import pg @@ -8,6 +9,10 @@ from VendingMachine import VendingMachine GREETING = 'UCC SNACKS' PIN_LENGTH = 4 +DOOR = 1 +SWITCH = 2 +KEY = 3 + class DispenseDatabase: def __init__(self, vending_machine): self.vending_machine = vending_machine @@ -48,7 +53,7 @@ def get_pin(uid): try: s = os.stat(pinfile) except OSError: - return False + return None if s.st_mode & 077: return None try: @@ -62,7 +67,7 @@ def get_pin(uid): return int(pinstr) def has_good_pin(uid): - return get_pin != None + return get_pin(uid) != None def verify_user_pin(uid, pin): if get_pin(uid) == pin: @@ -111,8 +116,8 @@ if __name__ == '__main__': last_tick = time.time() while True: - if timeout != None and timeout > 0 and time.time() > last_tick+1: - timeout -= 1 + if time.time() > last_tick+1: + if timeout != None and timeout > 0: timeout -= 1 if len(scrolling_message) > 0: need_repaint = True if need_repaint and len(scrolling_message) > 0: @@ -121,12 +126,22 @@ if __name__ == '__main__': scrolling_message.append(scrolling_message[0]) del scrolling_message[0] need_repaint = False + if timeout == 0: + timeout = None + cur_user = '' + cur_pin = '' + cur_selection = '' + scrolling_message = [GREETING] + scrolling_wraps = False + need_repaint = True + continue v.wait_for_events(1) while True: e = v.next_event() if e == None: break (event, params) = e + print e if event == DOOR: if params == 0: door_open_mode(v); @@ -149,14 +164,20 @@ if __name__ == '__main__': need_repaint = True continue cur_user += chr(key + ord('0')) + scrolling_message = [] v.display('UID: '+cur_user) if len(cur_user) == 5: uid = int(cur_user) if not has_good_pin(uid): - v.display('PIN NO GOOD') - time.sleep(1) + scrolling_message = [' INVALID ', ' PIN', ' `SETUP', GREETING] + scrolling_wraps = False + need_repaint = True + cur_user = '' + cur_pin = '' continue + cur_pin = '' v.display('PIN: ') + scrolling_message = [] continue elif len(cur_pin) < PIN_LENGTH: if key == 11: @@ -168,21 +189,24 @@ if __name__ == '__main__': continue cur_pin = '' v.display('PIN: ') + scrolling_message = [] continue cur_pin += chr(key + ord('0')) v.display('PIN: '+'X'*len(cur_pin)) + scrolling_message = [] if len(cur_pin) == PIN_LENGTH: - name = verify_user_pin(int(cur_user), int(cur_pin)) - if name: + username = verify_user_pin(int(cur_user), int(cur_pin)) + if username: v.beep(0, False) cur_selection = '' - scrolling_message = [' WELCOME ', name] + scrolling_message = [' WELCOME ', username] scrolling_message.append('OR A SNACK') scrolling_wraps = True need_repaint = True + continue else: - v.beep(255, False) + v.beep(40, False) scrolling_message = [' BAD PIN ', ' SORRY ', GREETING] scrolling_wraps = False need_repaint = True @@ -190,16 +214,54 @@ if __name__ == '__main__': cur_user = '' cur_pin = '' continue - elif len(cur_selection) < 2: + elif len(cur_selection) == 0: if key == 11: - if cur_selection == '': - cur_pin = '' - cur_user = '' - v.display(GREETING) - continue + cur_pin = '' + cur_user = '' + cur_selection = '' + v.display('BYE!') + time.sleep(0.5) + scrolling_message = [GREETING] + scrolling_wraps = False + need_repaint = True + continue + cur_selection += chr(key + ord('0')) + scrolling_message = [] + v.display('SELECT: '+cur_selection) + elif len(cur_selection) == 1: + if key == 11: + cur_selection = '' + scrolling_message = [] + v.display('SELECT: ') + continue + else: cur_selection += chr(key + ord('0')) - if len(cur_selection) == 2: - make_selection(cur_selection) + #make_selection(cur_selection) + # XXX this should move somewhere else: + if cur_selection == '55': + v.display('GOT DOOR?') + os.system('su - "%s" -c "dispense door"'%username) + elif cur_selection[1] == '8': + v.display('GOT COKE?') + os.system('su - "%s" -c "dispense %s"'%(username, cur_selection[0])) + else: + v.display('HERES A '+cur_selection) + v.vend(cur_selection) + time.sleep(0.5) + v.display('THANK YOU') + time.sleep(0.5) + cur_selection = '' + scrolling_message = [ + 'LOGOUT: 5', + 'LOGOUT: 4', + 'LOGOUT: 3', + 'LOGOUT: 2', + 'LOGOUT: 1', + 'BYE BYE!'] + timeout = 7 + scrolling_wraps = True + need_repaint = True + v.wait_for_events(0) db.handle_events() diff --git a/sql-edition/servers/VendingMachine.py b/sql-edition/servers/VendingMachine.py index 2574c6d..18f3067 100644 --- a/sql-edition/servers/VendingMachine.py +++ b/sql-edition/servers/VendingMachine.py @@ -36,7 +36,7 @@ class VendingMachine: s = '' while True: s = self.rfh.read(1) - if s == '': raise Exception + if s == '': raise Exception('nothing read!') if s == '\n' or s == '\r': state = 1 prefix = '' @@ -49,7 +49,7 @@ class VendingMachine: self.challenge = int(prefix, 16) return - def get_response(self): + def get_response(self, async = False): self.wfh.flush() while True: s = '' @@ -61,6 +61,7 @@ class VendingMachine: text = s[4:] if code in asynchronous_responses: self.handle_event(code, text) + if async: return None else: self.await_prompt() return (code, text) @@ -147,10 +148,11 @@ class VendingMachine: return None def wait_for_events(self, timeout = None): + if self.events: return True (r, _, _) = select([self.rfh], [], [], timeout) if not r: return False event_added = False while True: - r.get_response() + self.get_response(async = True) (r, _, _) = select([self.rfh], [], [], 0) if not r: return event_added -- 2.20.1