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Contents
module CodeRay
module Encoders
# = XML Encoder
#
# Uses REXML. Very slow.
class XML < Encoder
register_for :xml
FILE_EXTENSION = 'xml'
autoload :REXML, 'rexml/document'
DEFAULT_OPTIONS = {
:tab_width => 8,
:pretty => -1,
:transitive => false,
}
protected
def setup options
super
@doc = REXML::Document.new
@doc << REXML::XMLDecl.new
@tab_width = options[:tab_width]
@root = @node = @doc.add_element('coderay-tokens')
end
def finish options
@doc.write @out, options[:pretty], options[:transitive], true
super
end
public
def text_token text, kind
if kind == :space
token = @node
else
token = @node.add_element kind.to_s
end
text.scan(/(\x20+)|(\t+)|(\n)|[^\x20\t\n]+/) do |space, tab, nl|
case
when space
token << REXML::Text.new(space, true)
when tab
token << REXML::Text.new(tab, true)
when nl
token << REXML::Text.new(nl, true)
else
token << REXML::Text.new($&)
end
end
end
def begin_group kind
@node = @node.add_element kind.to_s
end
def end_group kind
if @node == @root
raise 'no token to close!'
end
@node = @node.parent
end
end
end
end
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