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require 'rexml/child'
require 'rexml/source'
module REXML
# This class needs:
# * Documentation
# * Work! Not all types of attlists are intelligently parsed, so we just
# spew back out what we get in. This works, but it would be better if
# we formatted the output ourselves.
#
# AttlistDecls provide *just* enough support to allow namespace
# declarations. If you need some sort of generalized support, or have an
# interesting idea about how to map the hideous, terrible design of DTD
# AttlistDecls onto an intuitive Ruby interface, let me know. I'm desperate
# for anything to make DTDs more palateable.
class AttlistDecl < Child
include Enumerable
# What is this? Got me.
attr_reader :element_name
# Create an AttlistDecl, pulling the information from a Source. Notice
# that this isn't very convenient; to create an AttlistDecl, you basically
# have to format it yourself, and then have the initializer parse it.
# Sorry, but for the forseeable future, DTD support in REXML is pretty
# weak on convenience. Have I mentioned how much I hate DTDs?
def initialize(source)
super()
if (source.kind_of? Array)
@element_name, @pairs, @contents = *source
end
end
# Access the attlist attribute/value pairs.
# value = attlist_decl[ attribute_name ]
def [](key)
@pairs[key]
end
# Whether an attlist declaration includes the given attribute definition
# if attlist_decl.include? "xmlns:foobar"
def include?(key)
@pairs.keys.include? key
end
# Iterate over the key/value pairs:
# attlist_decl.each { |attribute_name, attribute_value| ... }
def each(&block)
@pairs.each(&block)
end
# Write out exactly what we got in.
def write out, indent=-1
out << @contents
end
def node_type
:attlistdecl
end
end
end
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