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# Unlike other backends, require REXML if it's not already loaded
require 'rexml/document' unless defined?(REXML)
module OEmbed
module Formatter
module XML
module Backends
# Use the REXML library, part of the standard library, to parse XML values.
module REXML
extend self
# Parses an XML string or IO and convert it into an object
def decode(xml)
if !xml.respond_to?(:read)
xml = StringIO.new(xml)
end
obj = {}
doc = ::REXML::Document.new(xml)
doc.elements[1].elements.each do |el|
obj[el.name] = el.text
end
obj
rescue
case $!
when parse_error
raise $!
else
raise parse_error, "Couldn't parse the given document."
end
end
def decode_fail_msg
"The version of the REXML library you have installed isn't parsing XML like ruby-oembed expected."
end
def parse_error
::REXML::ParseException
end
end
end
end
end
end
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