[41] | 1 | # Interface towards the websites used
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| 2 |
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| 3 | #------------------------------------------------------------------------------
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| 4 |
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| 5 | import const
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| 6 |
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| 7 | import threading
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| 8 | import sys
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[51] | 9 | import urllib
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[41] | 10 | import urllib2
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| 11 | import hashlib
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| 12 | import datetime
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| 13 | import codecs
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[63] | 14 | import xml.sax
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[41] | 15 |
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| 16 | #---------------------------------------------------------------------------------------
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| 17 |
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| 18 | def readline(f):
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| 19 | """Read a line from the given file.
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| 20 |
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| 21 | The line is stripped and empty lines are discarded."""
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| 22 | while True:
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| 23 | line = f.readline()
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| 24 | if not line: return ""
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| 25 | line = line.strip()
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| 26 | if line:
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| 27 | return line
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| 28 |
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| 29 | #---------------------------------------------------------------------------------------
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| 30 |
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| 31 | class BookedFlight(object):
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| 32 | """A flight that was booked."""
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| 33 | TYPECODE2TYPE = { "736" : const.AIRCRAFT_B736,
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| 34 | "73G" : const.AIRCRAFT_B737,
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| 35 | "738" : const.AIRCRAFT_B738,
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| 36 | "733" : const.AIRCRAFT_B733,
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| 37 | "734" : const.AIRCRAFT_B734,
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| 38 | "735" : const.AIRCRAFT_B735,
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| 39 | "DH4" : const.AIRCRAFT_DH8D,
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| 40 | "762" : const.AIRCRAFT_B762,
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| 41 | "763" : const.AIRCRAFT_B763,
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| 42 | "CR2" : const.AIRCRAFT_CRJ2,
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| 43 | "F70" : const.AIRCRAFT_F70,
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| 44 | "LI2" : const.AIRCRAFT_DC3,
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| 45 | "TU3" : const.AIRCRAFT_T134,
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| 46 | "TU5" : const.AIRCRAFT_T154,
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| 47 | "YK4" : const.AIRCRAFT_YK40 }
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| 48 |
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| 49 | def __init__(self, id, f):
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| 50 | """Construct a booked flight with the given ID.
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| 51 |
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| 52 | The rest of the data is read from the given file."""
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| 53 |
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| 54 | self.id = id
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| 55 | self.callsign = readline(f)
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| 56 |
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| 57 | date = readline(f)
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| 58 |
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| 59 | self.departureICAO = readline(f)
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| 60 | self.arrivalICAO = readline(f)
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| 61 |
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| 62 | self._readAircraftType(f)
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| 63 | self.tailNumber = readline(f)
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| 64 | self.numPassengers = int(readline(f))
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| 65 | self.numCrew = int(readline(f))
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| 66 | self.bagWeight = int(readline(f))
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| 67 | self.cargoWeight = int(readline(f))
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| 68 | self.mailWeight = int(readline(f))
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| 69 | self.route = readline(f)
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| 70 |
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| 71 | departureTime = readline(f)
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| 72 | self.departureTime = datetime.datetime.strptime(date + " " + departureTime,
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| 73 | "%Y-%m-%d %H:%M:%S")
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| 74 |
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| 75 | arrivalTime = readline(f)
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| 76 | self.arrivalTime = datetime.datetime.strptime(date + " " + arrivalTime,
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| 77 | "%Y-%m-%d %H:%M:%S")
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| 78 |
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| 79 | if not readline(f)==".NEXT.":
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| 80 | raise Exception("Invalid line in flight data")
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| 81 |
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| 82 | def _readAircraftType(self, f):
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| 83 | """Read the aircraft type from the given file."""
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| 84 | line = readline(f)
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| 85 | typeCode = line[:3]
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| 86 | if typeCode in self.TYPECODE2TYPE:
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| 87 | self.aircraftType = self.TYPECODE2TYPE[typeCode]
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| 88 | else:
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| 89 | raise Exception("Invalid aircraft type code: '" + typeCode + "'")
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| 90 |
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| 91 | def __repr__(self):
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| 92 | """Get a representation of the flight."""
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| 93 | s = "<Flight: %s-%s, %s, %s-%s," % (self.departureICAO,
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| 94 | self.arrivalICAO,
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| 95 | self.route,
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| 96 | self.departureTime, self.arrivalTime)
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| 97 | s += " %d %s," % (self.aircraftType, self.tailNumber)
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| 98 | s += " pax=%d, crew=%d, bag=%d, cargo=%d, mail=%d" % \
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| 99 | (self.numPassengers, self.numCrew,
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| 100 | self.bagWeight, self.cargoWeight, self.mailWeight)
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| 101 | s += ">"
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| 102 | return s
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| 103 |
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| 104 | #------------------------------------------------------------------------------
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| 105 |
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[51] | 106 | class Plane(object):
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| 107 | """Information about an airplane in the fleet."""
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| 108 | def __init__(self, s):
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| 109 | """Build a plane info based on the given string.
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| 110 |
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| 111 | The string consists of three, space-separated fields.
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| 112 | The first field is the tail number, the second field is the gate
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| 113 | number, the third field is the plane's status as a character."""
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| 114 | try:
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| 115 | words = s.split(" ")
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| 116 | tailNumber = words[0]
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| 117 | self.tailNumber = tailNumber
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| 118 |
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| 119 | status = words[2] if len(words)>2 else None
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| 120 | self.status = const.PLANE_HOME if status=="H" else \
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| 121 | const.PLANE_AWAY if status=="A" else \
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| 122 | const.PLANE_PARKING if status=="P" else \
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| 123 | const.PLANE_UNKNOWN
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| 124 |
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| 125 | gateNumber = words[1] if len(words)>1 else ""
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| 126 | self.gateNumber = gateNumber if gateNumber else None
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| 127 |
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| 128 | except:
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| 129 | print >> sys.stderr, "Plane string is invalid: '" + s + "'"
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| 130 | self.tailNumber = None
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| 131 |
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| 132 | def __repr__(self):
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| 133 | """Get the representation of the plane object."""
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| 134 | s = "<Plane: %s %s" % (self.tailNumber,
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| 135 | "home" if self.status==const.PLANE_HOME else \
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| 136 | "away" if self.status==const.PLANE_AWAY else \
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| 137 | "parking" if self.status==const.PLANE_PARKING \
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| 138 | else "unknown")
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| 139 | if self.gateNumber is not None:
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| 140 | s += " (gate " + self.gateNumber + ")"
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| 141 | s += ">"
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| 142 | return s
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| 143 |
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| 144 |
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| 145 | #------------------------------------------------------------------------------
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| 146 |
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| 147 | class Fleet(object):
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| 148 | """Information about the whole fleet."""
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| 149 | def __init__(self, f):
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| 150 | """Construct the fleet information by reading the given file object."""
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| 151 | self._planes = {}
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| 152 | while True:
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| 153 | line = readline(f)
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| 154 | if not line or line == "#END": break
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| 155 |
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| 156 | plane = Plane(line)
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| 157 | if plane.tailNumber is not None:
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| 158 | self._planes[plane.tailNumber] = plane
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| 159 |
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| 160 | def isGateConflicting(self, plane):
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| 161 | """Check if the gate of the given plane conflicts with another plane's
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| 162 | position."""
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| 163 | for p in self._planes.itervalues():
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| 164 | if p.tailNumber!=plane.tailNumber and \
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| 165 | p.status==const.PLANE_HOME and \
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| 166 | p.gateNumber==plane.gateNumber:
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| 167 | return True
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| 168 |
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| 169 | return False
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| 170 |
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| 171 | def getOccupiedGateNumbers(self):
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| 172 | """Get a set containing the numbers of the gates occupied by planes."""
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| 173 | gateNumbers = set()
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| 174 | for p in self._planes.itervalues():
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| 175 | if p.status==const.PLANE_HOME and p.gateNumber:
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| 176 | gateNumbers.add(p.gateNumber)
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| 177 | return gateNumbers
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| 178 |
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| 179 | def __getitem__(self, tailNumber):
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| 180 | """Get the plane with the given tail number.
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| 181 |
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| 182 | If the plane is not in the fleet, None is returned."""
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| 183 | return self._planes[tailNumber] if tailNumber in self._planes else None
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| 184 |
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| 185 | def __repr__(self):
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| 186 | """Get the representation of the fleet object."""
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| 187 | return self._planes.__repr__()
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| 188 |
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| 189 | #------------------------------------------------------------------------------
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| 190 |
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[63] | 191 | class NOTAM(object):
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| 192 | """A NOTAM for an airport."""
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| 193 | def __init__(self, begin, notice, end = None, permanent = False,
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| 194 | repeatCycle = None):
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| 195 | """Construct the NOTAM."""
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| 196 | self.begin = begin
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| 197 | self.notice = notice
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| 198 | self.end = end
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| 199 | self.permanent = permanent
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| 200 | self.repeatCycle = None
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| 201 |
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| 202 | def __repr__(self):
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| 203 | """Get the representation of the NOTAM."""
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| 204 | s = "<NOTAM " + str(self.begin)
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| 205 | if self.end:
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| 206 | s += " - " + str(self.end)
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| 207 | elif self.permanent:
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| 208 | s += " - PERMANENT"
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| 209 | if self.repeatCycle:
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| 210 | s += " (" + self.repeatCycle + ")"
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| 211 | s += ": " + self.notice
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| 212 | s += ">"
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| 213 | return s
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| 214 |
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| 215 | #------------------------------------------------------------------------------
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| 216 |
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| 217 | class NOTAMHandler(xml.sax.handler.ContentHandler):
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| 218 | """A handler for the NOTAM database."""
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| 219 | def __init__(self, airportICAOs):
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| 220 | """Construct the handler for the airports with the given ICAO code."""
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| 221 | self._notams = {}
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| 222 | for icao in airportICAOs:
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| 223 | self._notams[icao] = []
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| 224 |
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| 225 | def startElement(self, name, attrs):
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| 226 | """Start an element."""
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| 227 | if name!="notam" or \
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| 228 | "A" not in attrs or not attrs["A"] or \
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| 229 | "B" not in attrs or not attrs["B"] or \
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| 230 | "E" not in attrs or not attrs["E"]:
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| 231 | return
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| 232 |
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| 233 | icao = attrs["A"]
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| 234 | if icao not in self._notams:
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| 235 | return
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| 236 |
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| 237 | begin = datetime.datetime.strptime(attrs["B"], "%Y-%m-%d %H:%M:%S")
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| 238 |
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| 239 | c = attrs["C"] if "C" in attrs else None
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| 240 | end = datetime.datetime.strptime(c, "%Y-%m-%d %H:%M:%S") if c else None
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| 241 |
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| 242 | permanent = attrs["C_flag"]=="PERM" if "C_flag" in attrs else False
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| 243 |
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| 244 | repeatCycle = attrs["D"] if "D" in attrs else None
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| 245 |
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| 246 | self._notams[icao].append(NOTAM(begin, attrs["E"], end = end,
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| 247 | permanent = permanent,
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| 248 | repeatCycle = repeatCycle))
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| 249 |
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| 250 | def get(self, icao):
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| 251 | """Get the NOTAMs for the given ICAO code."""
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| 252 | return self._notams[icao] if icao in self._notams else []
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| 253 |
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| 254 | #------------------------------------------------------------------------------
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| 255 |
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[41] | 256 | class Result(object):
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| 257 | """A result object.
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| 258 |
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| 259 | An instance of this filled with the appropriate data is passed to the
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| 260 | callback function on each request."""
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| 261 |
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| 262 | def __repr__(self):
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| 263 | """Get a representation of the result."""
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| 264 | s = "<Result:"
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| 265 | for (key, value) in self.__dict__.iteritems():
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| 266 | s += " " + key + "=" + unicode(value)
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| 267 | s += ">"
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| 268 | return s
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| 269 |
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| 270 | #------------------------------------------------------------------------------
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| 271 |
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| 272 | class Request(object):
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| 273 | """Base class for requests.
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| 274 |
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| 275 | It handles any exceptions and the calling of the callback.
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| 276 |
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| 277 | If an exception occurs during processing, the callback is called with
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| 278 | the two parameters: a boolean value of False, and the exception object.
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| 279 |
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| 280 | If no exception occurs, the callback is called with True and the return
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| 281 | value of the run() function.
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| 282 |
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| 283 | If the callback function throws an exception, that is caught and logged
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| 284 | to the debug log."""
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| 285 | def __init__(self, callback):
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| 286 | """Construct the request."""
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| 287 | self._callback = callback
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| 288 |
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| 289 | def perform(self):
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| 290 | """Perform the request.
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| 291 |
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| 292 | The object's run() function is called. If it throws an exception,
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| 293 | the callback is called with False, and the exception. Otherwise the
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| 294 | callback is called with True and the return value of the run()
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| 295 | function. Any exceptions thrown by the callback are caught and
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| 296 | reported."""
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| 297 | try:
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| 298 | result = self.run()
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| 299 | returned = True
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| 300 | except Exception, e:
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| 301 | result = e
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| 302 | returned = False
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| 303 |
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| 304 | try:
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| 305 | self._callback(returned, result)
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| 306 | except Exception, e:
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| 307 | print >> sys.stderr, "web.Handler.Request.perform: callback throwed an exception: " + str(e)
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| 308 |
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| 309 | #------------------------------------------------------------------------------
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| 310 |
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| 311 | class Login(Request):
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| 312 | """A login request."""
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| 313 | iso88592decoder = codecs.getdecoder("iso-8859-2")
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| 314 |
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[51] | 315 | def __init__(self, callback, pilotID, password):
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[41] | 316 | """Construct the login request with the given pilot ID and
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| 317 | password."""
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| 318 | super(Login, self).__init__(callback)
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| 319 |
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| 320 | self._pilotID = pilotID
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| 321 | self._password = password
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| 322 |
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| 323 | def run(self):
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| 324 | """Perform the login request."""
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| 325 | md5 = hashlib.md5()
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| 326 | md5.update(self._pilotID)
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| 327 | pilotID = md5.hexdigest()
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| 328 |
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| 329 | md5 = hashlib.md5()
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| 330 | md5.update(self._password)
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| 331 | password = md5.hexdigest()
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| 332 |
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| 333 | url = "http://www.virtualairlines.hu/leker2.php?pid=%s&psw=%s" % \
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| 334 | (pilotID, password)
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| 335 |
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| 336 | result = Result()
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| 337 |
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| 338 | f = urllib2.urlopen(url)
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| 339 |
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| 340 | status = readline(f)
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| 341 | result.loggedIn = status == ".OK."
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| 342 |
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| 343 | if result.loggedIn:
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| 344 | result.pilotName = self.iso88592decoder(readline(f))[0]
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| 345 | result.exams = readline(f)
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| 346 | result.flights = []
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| 347 |
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| 348 | while True:
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| 349 | line = readline(f)
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| 350 | if not line or line == "#ENDPIREP": break
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| 351 |
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| 352 | flight = BookedFlight(line, f)
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| 353 | result.flights.append(flight)
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| 354 |
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[48] | 355 | result.flights.sort(cmp = lambda flight1, flight2:
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| 356 | cmp(flight1.departureTime,
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| 357 | flight2.departureTime))
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| 358 |
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[51] | 359 | f.close()
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| 360 |
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[41] | 361 | return result
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| 362 |
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| 363 | #------------------------------------------------------------------------------
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| 364 |
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[51] | 365 | class GetFleet(Request):
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| 366 | """Request to get the fleet from the website."""
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| 367 |
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| 368 | def __init__(self, callback):
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| 369 | """Construct the fleet request."""
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| 370 | super(GetFleet, self).__init__(callback)
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| 371 |
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| 372 | def run(self):
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| 373 | """Perform the login request."""
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| 374 | url = "http://www.virtualairlines.hu/onlinegates_get.php"
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| 375 |
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| 376 | f = urllib2.urlopen(url)
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| 377 | result = Result()
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| 378 | result.fleet = Fleet(f)
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| 379 | f.close()
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| 380 |
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| 381 | return result
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| 382 |
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| 383 | #------------------------------------------------------------------------------
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| 384 |
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| 385 | class UpdatePlane(Request):
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| 386 | """Update the status of one of the planes in the fleet."""
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| 387 | def __init__(self, callback, tailNumber, status, gateNumber = None):
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| 388 | """Construct the request."""
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| 389 | super(UpdatePlane, self).__init__(callback)
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| 390 | self._tailNumber = tailNumber
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| 391 | self._status = status
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| 392 | self._gateNumber = gateNumber
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| 393 |
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| 394 | def run(self):
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| 395 | """Perform the plane update."""
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| 396 | url = "http://www.virtualairlines.hu/onlinegates_set.php"
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| 397 |
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| 398 | status = "H" if self._status==const.PLANE_HOME else \
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| 399 | "A" if self._status==const.PLANE_AWAY else \
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| 400 | "P" if self._status==const.PLANE_PARKING else ""
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| 401 |
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| 402 | gateNumber = self._gateNumber if self._gateNumber else ""
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| 403 |
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| 404 | data = urllib.urlencode([("lajstrom", self._tailNumber),
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| 405 | ("status", status),
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| 406 | ("kapu", gateNumber)])
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| 407 |
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| 408 | f = urllib2.urlopen(url, data)
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| 409 | line = readline(f)
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| 410 |
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| 411 | result = Result()
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| 412 | result.success = line == "OK"
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| 413 |
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| 414 | return result
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| 415 |
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| 416 | #------------------------------------------------------------------------------
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| 417 |
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[63] | 418 | class GetNOTAMs(Request):
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| 419 | """Get the NOTAMs from EURoutePro and select the ones we are interested
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| 420 | in."""
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| 421 | def __init__(self, callback, departureICAO, arrivalICAO):
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| 422 | """Construct the request for the given airports."""
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| 423 | super(GetNOTAMs, self).__init__(callback)
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| 424 | self._departureICAO = departureICAO
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| 425 | self._arrivalICAO = arrivalICAO
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| 426 |
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| 427 | def run(self):
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| 428 | """Perform the plane update."""
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| 429 | xmlParser = xml.sax.make_parser()
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| 430 | notamHandler = NOTAMHandler([self._departureICAO, self._arrivalICAO])
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| 431 | xmlParser.setContentHandler(notamHandler)
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| 432 |
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| 433 | url = "http://notams.euroutepro.com/notams.xml"
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| 434 |
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| 435 | f = urllib2.urlopen(url)
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| 436 | try:
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| 437 | xmlParser.parse(f)
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| 438 | finally:
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| 439 | f.close()
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| 440 |
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| 441 | result = Result()
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| 442 | result.departureNOTAMs = notamHandler.get(self._departureICAO)
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| 443 | result.arrivalNOTAMs = notamHandler.get(self._arrivalICAO)
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| 444 |
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| 445 | return result
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| 446 |
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| 447 | #------------------------------------------------------------------------------
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| 448 |
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[41] | 449 | class Handler(threading.Thread):
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| 450 | """The handler for the web services.
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| 451 |
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| 452 | It can process one request at a time. The results are passed to a callback
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| 453 | function."""
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| 454 | def __init__(self):
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| 455 | """Construct the handler."""
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| 456 | super(Handler, self).__init__()
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| 457 |
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| 458 | self._requests = []
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| 459 | self._requestCondition = threading.Condition()
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| 460 |
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| 461 | self.daemon = True
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| 462 |
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[51] | 463 | def login(self, callback, pilotID, password):
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[41] | 464 | """Enqueue a login request."""
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[51] | 465 | self._addRequest(Login(callback, pilotID, password))
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[41] | 466 |
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[51] | 467 | def getFleet(self, callback):
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| 468 | """Enqueue a fleet retrieval request."""
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| 469 | self._addRequest(GetFleet(callback))
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| 470 |
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| 471 | def updatePlane(self, callback, tailNumber, status, gateNumber = None):
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| 472 | """Update the status of the given plane."""
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| 473 | self._addRequest(UpdatePlane(callback, tailNumber, status, gateNumber))
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[63] | 474 |
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| 475 | def getNOTAMs(self, callback, departureICAO, arrivalICAO):
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| 476 | """Get the NOTAMs for the given two airports."""
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| 477 | self._addRequest(GetNOTAMs(callback, departureICAO, arrivalICAO))
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[51] | 478 |
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[41] | 479 | def run(self):
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| 480 | """Process the requests."""
|
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| 481 | while True:
|
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| 482 | with self._requestCondition:
|
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| 483 | while not self._requests:
|
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| 484 | self._requestCondition.wait()
|
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| 485 | request = self._requests[0]
|
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| 486 | del self._requests[0]
|
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| 487 |
|
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| 488 | request.perform()
|
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| 489 |
|
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| 490 | def _addRequest(self, request):
|
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| 491 | """Add the given request to the queue."""
|
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| 492 | with self._requestCondition:
|
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| 493 | self._requests.append(request)
|
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| 494 | self._requestCondition.notify()
|
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| 495 |
|
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| 496 | #------------------------------------------------------------------------------
|
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| 497 |
|
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| 498 | if __name__ == "__main__":
|
---|
| 499 | import time
|
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| 500 |
|
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| 501 | def callback(returned, result):
|
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| 502 | print returned, unicode(result)
|
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| 503 |
|
---|
| 504 | handler = Handler()
|
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| 505 | handler.start()
|
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| 506 |
|
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[51] | 507 | #handler.login(callback, "P096", "V5fwj")
|
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| 508 | #handler.getFleet(callback)
|
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| 509 | # Plane: HA-LEG home (gate 67)
|
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[63] | 510 | #handler.updatePlane(callback, "HA-LQC", const.PLANE_AWAY, "72")
|
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| 511 | #time.sleep(3)
|
---|
| 512 | #handler.getFleet(callback)
|
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| 513 | #time.sleep(3)
|
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| 514 |
|
---|
| 515 | handler.getNOTAMs(callback, "LHBP", "EPWA")
|
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| 516 | time.sleep(3)
|
---|
| 517 |
|
---|
[41] | 518 |
|
---|
| 519 | #------------------------------------------------------------------------------
|
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