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# -*- coding: utf-8-*-
import re
import datetime
import struct
import urllib
import feedparser
import requests
import bs4
from app_utils import getTimezone
from semantic.dates import DateService
WORDS = ["WEATHER", "TODAY", "TOMORROW"]
def replaceAcronyms(text):
"""
Replaces some commonly-used acronyms for an improved verbal weather report.
"""
def parseDirections(text):
words = {
'N': 'north',
'S': 'south',
'E': 'east',
'W': 'west',
}
output = [words[w] for w in list(text)]
return ' '.join(output)
acronyms = re.findall(r'\b([NESW]+)\b', text)
for w in acronyms:
text = text.replace(w, parseDirections(w))
text = re.sub(r'(\b\d+)F(\b)', '\g<1> Fahrenheit\g<2>', text)
text = re.sub(r'(\b)mph(\b)', '\g<1>miles per hour\g<2>', text)
text = re.sub(r'(\b)in\.', '\g<1>inches', text)
return text
def get_locations():
r = requests.get('http://www.wunderground.com/about/faq/' +
'international_cities.asp')
soup = bs4.BeautifulSoup(r.text)
data = soup.find(id="inner-content").find('pre').string
# Data Stucture:
# 00 25 location
# 01 1
# 02 2 region
# 03 1
# 04 2 country
# 05 2
# 06 4 ID
# 07 5
# 08 7 latitude
# 09 1
# 10 7 logitude
# 11 1
# 12 5 elevation
# 13 5 wmo_id
s = struct.Struct("25s1s2s1s2s2s4s5s7s1s7s1s5s5s")
for line in data.splitlines()[3:]:
row = s.unpack_from(line)
info = {'name': row[0].strip(),
'region': row[2].strip(),
'country': row[4].strip(),
'latitude': float(row[8].strip()),
'logitude': float(row[10].strip()),
'elevation': int(row[12].strip()),
'id': row[6].strip(),
'wmo_id': row[13].strip()}
yield info
def get_forecast_by_name(location_name):
entries = feedparser.parse("http://rss.wunderground.com/auto/rss_full/%s"
% urllib.quote(location_name))['entries']
if entries:
# We found weather data the easy way
return entries
else:
# We try to get weather data via the list of stations
for location in get_locations():
if location['name'] == location_name:
return get_forecast_by_wmo_id(location['wmo_id'])
def get_forecast_by_wmo_id(wmo_id):
return feedparser.parse("http://rss.wunderground.com/auto/" +
"rss_full/global/stations/%s.xml"
% wmo_id)['entries']
def handle(text, mic, profile):
"""
Responds to user-input, typically speech text, with a summary of
the relevant weather for the requested date (typically, weather
information will not be available for days beyond tomorrow).
Arguments:
text -- user-input, typically transcribed speech
mic -- used to interact with the user (for both input and output)
profile -- contains information related to the user (e.g., phone
number)
"""
forecast = None
if 'wmo_id' in profile:
forecast = get_forecast_by_wmo_id(str(profile['wmo_id']))
elif 'location' in profile:
forecast = get_forecast_by_name(str(profile['location']))
if not forecast:
mic.say("I'm sorry, I can't seem to access that information. Please " +
"make sure that you've set your location on the dashboard.")
return
tz = getTimezone(profile)
service = DateService(tz=tz)
date = service.extractDay(text)
if not date:
date = datetime.datetime.now(tz=tz)
weekday = service.__daysOfWeek__[date.weekday()]
if date.weekday() == datetime.datetime.now(tz=tz).weekday():
date_keyword = "Today"
elif date.weekday() == (
datetime.datetime.now(tz=tz).weekday() + 1) % 7:
date_keyword = "Tomorrow"
else:
date_keyword = "On " + weekday
output = None
for entry in forecast:
try:
date_desc = entry['title'].split()[0].strip().lower()
if date_desc == 'forecast':
# For global forecasts
date_desc = entry['title'].split()[2].strip().lower()
weather_desc = entry['summary']
elif date_desc == 'current':
# For first item of global forecasts
continue
else:
# US forecasts
weather_desc = entry['summary'].split('-')[1]
if weekday == date_desc:
output = date_keyword + \
", the weather will be " + weather_desc + "."
break
except:
continue
if output:
output = replaceAcronyms(output)
mic.say(output)
else:
mic.say(
"I'm sorry. I can't see that far ahead.")
def isValid(text):
"""
Returns True if the text is related to the weather.
Arguments:
text -- user-input, typically transcribed speech
"""
return bool(re.search(r'\b(weathers?|temperature|forecast|outside|hot|' +
r'cold|jacket|coat|rain)\b', text, re.IGNORECASE))
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