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#--
# Copyright (c) 2005 Robert Aman
#
# Contributors: Jens Kraemer
#
# Permission is hereby granted, free of charge, to any person obtaining
# a copy of this software and associated documentation files (the
# "Software"), to deal in the Software without restriction, including
# without limitation the rights to use, copy, modify, merge, publish,
# distribute, sublicense, and/or sell copies of the Software, and to
# permit persons to whom the Software is furnished to do so, subject to
# the following conditions:
#
# The above copyright notice and this permission notice shall be
# included in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
#
#++
require 'feed_tools'
require 'feed_tools/helpers/generic_helper'
# This module provides helper methods for simplifying normal interactions with
# the FeedTools library.
module FeedTools
module FeedToolsHelper
@@default_local_path = File.expand_path('.')
# Returns the default path to load local files from
def self.default_local_path
@@default_local_path
end
# Sets the default path to load local files from
def self.default_local_path=(new_default_local_path)
@@default_local_path = new_default_local_path
end
protected
# Loads a feed within a block for more consistent syntax and control
# over the FeedTools environment.
def with_feed(options={})
FeedTools::GenericHelper.validate_options([ :from_file,
:from_url,
:from_data,
:feed_cache ],
options.keys)
options = { :feed_cache =>
FeedTools.configurations[:feed_cache] }.merge(options)
if options[:from_file]
file_path = File.expand_path(@@default_local_path + '/' +
options[:from_file])
if !File.exists?(file_path)
file_path = File.expand_path(options[:from_file])
end
if !File.exists?(file_path)
raise "No such file - #{file_path}"
end
feed = FeedTools::Feed.open("file://#{file_path}")
elsif options[:from_url]
feed = FeedTools::Feed.open(options[:from_url])
elsif options[:from_data]
feed = FeedTools::Feed.new
feed.feed_data = options[:from_data]
else
raise "No data source specified"
end
@@save_cache = FeedTools.configurations[:feed_cache].to_s
FeedTools.configurations[:feed_cache] = options[:feed_cache].to_s
yield feed
FeedTools.configurations[:feed_cache] = @@save_cache
feed = nil
end
end
end
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