Sha256: c9d81a4b3764055f006b4b62ebd13a2644998f5ddc0a2a698ea84456ccde5526
Contents?: true
Size: 1015 Bytes
Versions: 16
Compression:
Stored size: 1015 Bytes
Contents
require 'singleton'
module BibTeX
class Filter
include Singleton
class << self
# Hook called by Ruby if Filter is subclassed
def inherited(base)
base.class_eval { include Singleton }
subclasses << base
end
# Returns a list of all current Filters
def subclasses
@subclasses ||= []
end
end
def apply(value)
value
end
alias convert apply
alias << apply
end
module Filters
LOAD_PATH = [File.expand_path('..', __FILE__), 'filters'].join('/').freeze
Dir.glob("#{LOAD_PATH}/*.rb").each do |filter|
require filter
end
def self.resolve(filter)
case
when filter.respond_to?(:apply)
filter
when filter.respond_to?(:to_s)
klass = Filter.subclasses.detect do |c|
c.name == filter.to_s || c.name.split(/::/)[-1] =~ /^#{filter}$/i
end
klass && klass.instance
else
nil
end
end
end
end
Version data entries
16 entries across 16 versions & 1 rubygems