lib/gepub/bindings.rb
require 'rubygems'
require 'nokogiri'
module GEPUB
class Bindings
include XMLUtil
include InspectMixin
class MediaType
attr_accessor :handler, :media_type
def initialize(handler, media_type)
@handler = handler
@media_type = media_type
end
def to_xml(builder)
builder.mediaType({'handler' => @handler, 'media-type' => @media_type})
end
end
def initialize
@media_types = []
@handler_by_media_type = {}
yield self if block_given?
end
def self.parse(bindings_xml)
Bindings.new {
|bindings|
bindings.instance_eval {
if !bindings_xml.nil?
@xml = bindings_xml
@namespaces = @xml.namespaces
@attributes = attr_to_hash(@xml.attributes)
@xml.xpath("//#{ns_prefix(OPF_NS)}:bindings/#{ns_prefix(OPF_NS)}:mediaType", @namespaces).map {
|mediaType|
@media_types << MediaType.new(mediaType['handler'], mediaType['media-type'])
@handler_by_media_type[mediaType['media-type']] = mediaType['handler']
}
end
}
}
end
def media_types
return @media_types.dup
end
def handler_by_media_type
return @handler_by_media_type.dup
end
def add(id, media_type)
@media_types << MediaType.new(id, media_type)
@handler_by_media_type[media_type] = id
end
def to_xml(builder)
if (media_types.size > 0)
builder.bindings {
@media_types.each {
|mediaType|
mediaType.to_xml(builder)
}
}
end
end
end
end