ShortFormatter.py

   1 #
   2 # vi: set softtabstop=4 shiftwidth=4 tabstop=8 expandtab:
   3
   4 """Formats an Itinerary for terse display."""
   5
   6 import sre
   7
   8 import Itinerary
   9
  10 class ShortFormatter:
  11     def __init__(self, itinentries):
  12         self.entries = itinentries
  13
  14         # A list of text strings to display.
  15         self.lines = []
  16
  17         self.format()
  18
  19     def format(self):
  20         for ie in self.entries:
  21             if ie.type == Itinerary.TYPE_WALK_TO_STOP:
  22                 self.formatWalkToStop(ie)
  23             elif ie.type == Itinerary.TYPE_TAKE_BUS:
  24                 self.formatTakeBus(ie)
  25             elif ie.type == Itinerary.TYPE_WALK_TO_TRANSFER:
  26                 self.formatWalkToTransfer(ie)
  27             elif ie.type == Itinerary.TYPE_WALK_TO_DEST:
  28                 self.formatWalkToDest(ie)
  29
  30     def formatWalkToStop(self, ie):
  31         line = "-%s walk %s (%s)"                \
  32                 % (self.canonTime(ie.startTime),
  33                    self.canonDest(ie.destination), ie.busStop)
  34         self.lines.append(line)
  35
  36     def formatTakeBus(self, ie):
  37         line = "-%s %s %s to %s at %s"              \
  38                 % (self.canonTime(ie.startTime), ie.route,
  39                    self.canonDirection(ie.direction),
  40                    self.canonDest(ie.destination),
  41                    self.canonTime(ie.endTime))
  42         self.lines.append(line)
  43
  44     def formatWalkToTransfer(self, ie):
  45         line = "-walk %s (%s)" % (self.canonDest(ie.destination), ie.busStop)
  46         self.lines.append(line)
  47
  48     def formatWalkToDest(self, ie):
  49         line = "-walk %s %s"                            \
  50                 % (self.canonDest(ie.destination), self.canonTime(ie.endTime))
  51         self.lines.append(line)
  52
  53     def canonDest(self, d):
  54         """MERIVALE / COLONNADE  ->  Merivale/Colonnade"""
  55         match = _canon_dest_rx.match(d)
  56         if match:
  57             d = "/".join((match.group(1), match.group(2)))
  58         return d.title()
  59
  60     def canonTime(self, t):
  61         """11:05 AM  ->   11:05"""
  62         return t.split()[0]
  63
  64     def canonDirection(self, d):
  65         """St Laurent   ->   St Lau. Take the first 3 letters of all words
  66            after the first."""
  67         words = d.split()
  68         canonwords = [words[0]]
  69         for w in words[1:]:
  70             canonwords.append(w[0:3])   # ok even if only 2 letters in w
  71         return " ".join(canonwords)
  72
  73     def __str__(self):
  74         return "\n".join(self.lines)
  75
  76     def __repr__(self):
  77         print self.__str__()
  78
  79 _canon_dest_re = "^(.*)\s/\s+(.*)$"
  80 _canon_dest_rx = sre.compile(_canon_dest_re)