2 # -*- coding: UTF-8 -*-
4 from BeautifulSoup import BeautifulSoup, NavigableString
5 from urllib2 import urlopen
6 from urllib import urlencode
8 from datetime import datetime, time
9 from textwrap import wrap
14 POSITION_TYPES = ('stop', 'address', 'poi')
16 DEBUGLOG = os.path.expanduser('~/gotoVienna.debug')
18 class ParserError(Exception):
20 def __init__(self, msg='Parser error'):
24 UNKNOWN, CORRECTION, RESULT = range(3)
27 def search(origin_tuple, destination_tuple, dtime=None):
28 """ build route request
29 returns html result (as urllib response)
32 dtime = datetime.now()
34 origin, origin_type = origin_tuple
35 destination, destination_type = destination_tuple
36 if not origin_type in POSITION_TYPES or\
37 not destination_type in POSITION_TYPES:
38 raise ParserError('Invalid position type')
40 post = settings.search_post
41 post['name_origin'] = origin
42 post['type_origin'] = origin_type
43 post['name_destination'] = destination
44 post['type_destination'] = destination_type
45 post['itdDateDayMonthYear'] = dtime.strftime('%d.%m.%Y')
46 post['itdTime'] = dtime.strftime('%H:%M')
47 params = urlencode(post)
48 url = '%s?%s' % (settings.action, params)
51 f = open(DEBUGLOG, 'a')
55 print 'Unable to write to DEBUGLOG: %s' % DEBUGLOG
61 """ Parser for search response
64 def __init__(self, html):
65 self.soup = BeautifulSoup(html)
68 if self.soup.find('form', {'id': 'form_efaresults'}):
69 return PageType.RESULT
71 if self.soup.find('div', {'class':'form_error'}):
72 return PageType.CORRECTION
74 return PageType.UNKNOWN
76 def get_correction(self):
77 nlo = self.soup.find('select', {'id': 'nameList_origin'})
78 nld = self.soup.find('select', {'id': 'nameList_destination'})
80 if not nlo and not nld:
81 raise ParserError('Unable to parse html')
84 origin = map(lambda x: x.text, nlo.findAll('option'))
88 destination = map(lambda x: x.text, nld.findAll('option'))
92 return (origin, destination)
95 return rParser(str(self.soup))
100 """ Parser for routing results
103 def __init__(self, html):
104 self.soup = BeautifulSoup(html)
105 self._overview = None
109 def get_tdtext(cls, x, cl):
110 return x.find('td', {'class': cl}).text
113 def get_change(cls, x):
114 y = rParser.get_tdtext(x, 'col_change')
121 def get_price(cls, x):
122 y = rParser.get_tdtext(x, 'col_price')
126 return float(y.replace(',', '.'))
131 def get_date(cls, x):
132 y = rParser.get_tdtext(x, 'col_date')
134 return datetime.strptime(y, '%d.%m.%Y').date()
139 def get_time(cls, x):
140 y = rParser.get_tdtext(x, 'col_time')
142 if (y.find("-") > 0):
143 return map(lambda z: time(*map(int, z.split(':'))), y.split('-'))
145 return map(lambda z: time(*map(int, z.split(':'))), wrap(y, 5))
150 def get_duration(cls, x):
151 y = rParser.get_tdtext(x, 'col_duration')
153 return time(*map(int, y.split(":")))
158 for detail in self.details():
161 def _parse_details(self):
162 tours = self.soup.findAll('div', {'class': 'data_table tourdetail'})
164 trips = map(lambda x: map(lambda y: {
165 'time': rParser.get_time(y),
166 'station': map(lambda z: z[2:].strip(),
167 filter(lambda x: type(x) == NavigableString, y.find('td', {'class': 'col_station'}).contents)), # filter non NaviStrings
168 'info': map(lambda x: x.strip(),
169 filter(lambda z: type(z) == NavigableString, y.find('td', {'class': 'col_info'}).contents)),
170 }, x.find('tbody').findAll('tr')),
176 """returns list of trip details
177 [ [ { 'time': [datetime.time, datetime.time] if time else [],
178 'station': [u'start', u'end'] if station else [],
179 'info': [u'start station' if station else u'details for walking', u'end station' if station else u'walking duration']
180 }, ... # next trip step
181 ], ... # next trip possibility
184 if not self._details:
185 self._details = self._parse_details()
189 def _parse_overview(self):
192 table = self.soup.find('table', {'id': 'tbl_fahrten'})
194 # check if there is an overview table
195 if table and table.findAll('tr'):
197 rows = table.findAll('tr')[1:] # cut off headline
199 overview = map(lambda x: {
200 'date': rParser.get_date(x),
201 'time': rParser.get_time(x),
202 'duration': rParser.get_duration(x), # grab duration
203 'change': rParser.get_change(x),
204 'price': rParser.get_price(x),
208 raise ParserError('Unable to parse overview')
221 if not self._overview:
223 self._overview = self._parse_overview()
224 except AttributeError:
225 f = open(DEBUGLOG, 'w')
226 f.write(str(self.soup))
229 return self._overview