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###############################################################################
#
# file: rssfeed.py
#
# Purpose: refer to module documentation for details
#
# Note: This file is part of Termsaver application, and should not be used
# or executed separately.
#
###############################################################################
#
# Copyright 2012 Termsaver
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
#
###############################################################################
"""
Simple screensaver that displays data from a RSS feed.
See additional information in the class itself.
The screen class available here is:
* `RSSFeedScreen`
"""
#
# Internal modules
#
from termsaverlib.screen.base.rssfeed import RSSFeedScreenBase
from termsaverlib import constants
from termsaverlib.i18n import _
class RSSFeedScreen(RSSFeedScreenBase):
"""
Simple screensaver that displays data from a RSS feed.
RSS Feed Screen configuration:
* sleep between items: 3 seconds
* clean up each cycle: True
this will force the screen to be cleaned (cleared) before each joke
is displayed
* character display delay: 0.015
a bit faster than traditional speeds, because users are not
interested in the char print animation as much.
* clean up each item: False
* display format:
'%(title)s (%(pubDate)s)\n%(description)s\n%(link)s\n.\n'
"""
def __init__(self):
"""
Creates a new instance of this class.
"""
RSSFeedScreenBase.__init__(self,
"rssfeed",
_("displays rss feed information"),
None,
["pubDate", "title", "link", "description"],
'%(title)s (%(pubDate)s)\n%(description)s\n%(link)s\n.\n',
)
# set defaults for this screen
self.cleanup_per_cycle = True
self.cleanup_per_item = False
self.sleep_between_items = 3
self.delay = 0.015
def _message_no_url(self):
"""
Defines a method to be overriden by inheriting classes, with the
purpose to display extra help information for specific errors.
"""
return _("""
You just need to provide the URL of the RSS feed from where %(app_title)s will
read and display on screen.
If you do not have any idea which RSS to use, check out some examples here:
CNN
Top Stories - http://rss.cnn.com/rss/edition.rss
World - http://rss.cnn.com/rss/edition_world.rss
Technology - http://rss.cnn.com/rss/edition_technology.rss
See CNN's complete list of RSS syndication here:
http://edition.cnn.com/services/rss/
Lifehacker - http://www.lifehacker.com/index.xml
Note: Lifehacker uses HTML to deliver "description" contents in the RSS,
so you might need to change the format to something like:
--format "%%(title)s (%%(pubDate)s)\\n"
""") % {
'app_title': constants.App.TITLE,
}
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