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util.py
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util.py
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import wx
import os
import re
import time
import base64
import calendar
import urllib2
import urlparse
import threading
import feedparser
from htmlentitydefs import name2codepoint
from settings import settings
def set_icon(window):
bundle = wx.IconBundle()
bundle.AddIcon(wx.Icon('icons/16.png', wx.BITMAP_TYPE_PNG))
bundle.AddIcon(wx.Icon('icons/24.png', wx.BITMAP_TYPE_PNG))
bundle.AddIcon(wx.Icon('icons/32.png', wx.BITMAP_TYPE_PNG))
bundle.AddIcon(wx.Icon('icons/48.png', wx.BITMAP_TYPE_PNG))
bundle.AddIcon(wx.Icon('icons/256.png', wx.BITMAP_TYPE_PNG))
window.SetIcons(bundle)
def start_thread(func, *args):
thread = threading.Thread(target=func, args=args)
thread.setDaemon(True)
thread.start()
return thread
def scale_bitmap(bitmap, width, height, color):
bw, bh = bitmap.GetWidth(), bitmap.GetHeight()
if bw == width and bh == height:
return bitmap
if width < 0:
width = bw
if height < 0:
height = bh
buffer = wx.EmptyBitmap(bw, bh)
dc = wx.MemoryDC(buffer)
dc.SetBackground(wx.Brush(color))
dc.Clear()
dc.DrawBitmap(bitmap, 0, 0, True)
image = wx.ImageFromBitmap(buffer)
image = image.Scale(width, height, wx.IMAGE_QUALITY_HIGH)
result = wx.BitmapFromImage(image)
return result
def menu_item(menu, label, func, icon=None, kind=wx.ITEM_NORMAL):
item = wx.MenuItem(menu, -1, label, kind=kind)
if func:
menu.Bind(wx.EVT_MENU, func, id=item.GetId())
if icon:
item.SetBitmap(wx.Bitmap(icon))
menu.AppendItem(item)
return item
def select_choice(choice, data):
for index in range(choice.GetCount()):
if choice.GetClientData(index) == data:
choice.Select(index)
return
choice.Select(wx.NOT_FOUND)
def get_top_window(window):
result = None
while window:
result = window
window = window.GetParent()
return result
def get(obj, key, default):
value = obj.get(key, None)
return value or default
def abspath(path):
path = os.path.abspath(path)
path = 'file:///%s' % path.replace('\\', '/')
return path
def parse(url, username=None, password=None, etag=None, modified=None):
agent = settings.USER_AGENT
handlers = [get_proxy()]
if username and password:
url = insert_credentials(url, username, password)
return feedparser.parse(url, etag=etag, modified=modified, agent=agent, handlers=handlers)
def is_valid_feed(data):
entries = get(data, 'entries', [])
title = get(data.feed, 'title', '')
link = get(data.feed, 'link', '')
return entries or title or link
def insert_credentials(url, username, password):
parts = urlparse.urlsplit(url)
netloc = parts.netloc
if '@' in netloc:
netloc = netloc[netloc.index('@')+1:]
netloc = '%s:%s@%s' % (username, password, netloc)
parts = list(parts)
parts[1] = netloc
return urlparse.urlunsplit(tuple(parts))
def encode_password(password):
return base64.b64encode(password) if password else None
def decode_password(password):
try:
return base64.b64decode(password) if password else None
except Exception:
return None
def get_proxy():
if settings.USE_PROXY:
url = decode_password(settings.PROXY_URL)
if url:
# User-configured Proxy
map = {
'http': url,
'https': url,
}
proxy = urllib2.ProxyHandler(map)
else:
# Windows-configured Proxy
proxy = urllib2.ProxyHandler()
else:
# No Proxy
proxy = urllib2.ProxyHandler({})
return proxy
def find_themes():
return ['default'] # TODO: more themes!
result = []
names = os.listdir('themes')
for name in names:
if name.startswith('.'):
continue
path = os.path.join('themes', name)
if os.path.isdir(path):
result.append(name)
return result
def guess_polling_interval(entries):
if len(entries) < 2:
return settings.DEFAULT_POLLING_INTERVAL
timestamps = []
for entry in entries:
timestamp = calendar.timegm(get(entry, 'date_parsed', time.gmtime()))
timestamps.append(timestamp)
timestamps.sort()
durations = [b - a for a, b in zip(timestamps, timestamps[1:])]
mean = sum(durations) / len(durations)
choices = [
60,
60*5,
60*10,
60*15,
60*30,
60*60,
60*60*2,
60*60*4,
60*60*8,
60*60*12,
60*60*24,
]
desired = mean / 2
if desired == 0:
interval = settings.DEFAULT_POLLING_INTERVAL
elif desired < choices[0]:
interval = choices[0]
else:
interval = max(choice for choice in choices if choice <= desired)
return interval
def time_since(t):
t = int(t)
now = int(time.time())
seconds = max(now - t, 0)
if seconds == 1:
return '1 second'
if seconds < 60:
return '%d seconds' % seconds
minutes = seconds / 60
if minutes == 1:
return '1 minute'
if minutes < 60:
return '%d minutes' % minutes
hours = minutes / 60
if hours == 1:
return '1 hour'
if hours < 24:
return '%d hours' % hours
days = hours / 24
if days == 1:
return '1 day'
return '%d days' % days
def split_time(seconds):
if seconds < 60:
return seconds, 0
minutes = seconds / 60
if minutes < 60:
return minutes, 1
hours = minutes / 60
days = hours / 24
if days and hours % 24 == 0:
return days, 3
return hours, 2
def split_time_str(seconds):
interval, units = split_time(seconds)
strings = ['second', 'minute', 'hour', 'day']
string = strings[units]
if interval != 1:
string += 's'
return '%d %s' % (interval, string)
def pretty_name(name):
name = ' '.join(s.title() for s in name.split('_'))
last = '0'
result = ''
for c in name:
if c.isdigit() and not last.isdigit():
result += ' '
result += c
last = c
return result
def replace_entities1(text):
entity = re.compile(r'&#(\d+);')
def func(match):
try:
return unichr(int(match.group(1)))
except Exception:
return match.group(0)
return entity.sub(func, text)
def replace_entities2(text):
entity = re.compile(r'&([a-zA-Z]+);')
def func(match):
try:
return unichr(name2codepoint[match.group(1)])
except Exception:
return match.group(0)
return entity.sub(func, text)
def remove_markup(text):
html = re.compile(r'<[^>]+>')
return html.sub(' ', text)
def format(text, max_length=400):
previous = ''
while text != previous:
previous = text
text = replace_entities1(text)
text = replace_entities2(text)
text = remove_markup(text)
text = ' '.join(text.split())
if len(text) > max_length:
text = text[:max_length].strip()
text = text.split()[:-1]
text.append('[...]')
text = ' '.join(text)
return text