57 lines
1.4 KiB
Ruby
57 lines
1.4 KiB
Ruby
require 'rexml/parsers/streamparser'
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require 'rexml/parsers/baseparser'
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module REXML
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module Parsers
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class UltraLightParser
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def initialize stream
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@stream = stream
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@parser = REXML::Parsers::BaseParser.new( stream )
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end
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def add_listener( listener )
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@parser.add_listener( listener )
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end
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def rewind
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@stream.rewind
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@parser.stream = @stream
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end
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def parse
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root = context = []
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while true
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event = @parser.pull
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case event[0]
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when :end_document
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break
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when :end_doctype
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context = context[1]
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when :start_element, :doctype
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context << event
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event[1,0] = [context]
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context = event
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when :end_element
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context = context[1]
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else
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context << event
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end
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end
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root
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end
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end
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# An element is an array. The array contains:
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# 0 The parent element
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# 1 The tag name
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# 2 A hash of attributes
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# 3..-1 The child elements
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# An element is an array of size > 3
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# Text is a String
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# PIs are [ :processing_instruction, target, data ]
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# Comments are [ :comment, data ]
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# DocTypes are DocType structs
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# The root is an array with XMLDecls, Text, DocType, Array, Text
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end
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end
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