57 lines
1.6 KiB
Ruby
57 lines
1.6 KiB
Ruby
require "rexml/child"
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module REXML
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module DTD
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class EntityDecl < Child
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START = "<!ENTITY"
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START_RE = /^\s*#{START}/um
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PUBLIC = /^\s*#{START}\s+(?:%\s+)?(\w+)\s+PUBLIC\s+((["']).*?\3)\s+((["']).*?\5)\s*>/um
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SYSTEM = /^\s*#{START}\s+(?:%\s+)?(\w+)\s+SYSTEM\s+((["']).*?\3)(?:\s+NDATA\s+\w+)?\s*>/um
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PLAIN = /^\s*#{START}\s+(\w+)\s+((["']).*?\3)\s*>/um
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PERCENT = /^\s*#{START}\s+%\s+(\w+)\s+((["']).*?\3)\s*>/um
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# <!ENTITY name SYSTEM "...">
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# <!ENTITY name "...">
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def initialize src
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super()
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md = nil
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if src.match( PUBLIC )
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md = src.match( PUBLIC, true )
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@middle = "PUBLIC"
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@content = "#{md[2]} #{md[4]}"
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elsif src.match( SYSTEM )
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md = src.match( SYSTEM, true )
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@middle = "SYSTEM"
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@content = md[2]
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elsif src.match( PLAIN )
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md = src.match( PLAIN, true )
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@middle = ""
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@content = md[2]
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elsif src.match( PERCENT )
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md = src.match( PERCENT, true )
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@middle = ""
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@content = md[2]
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end
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raise ParseException.new("failed Entity match", src) if md.nil?
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@name = md[1]
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end
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def to_s
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rv = "<!ENTITY #@name "
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rv << "#@middle " if @middle.size > 0
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rv << @content
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rv
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end
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def write( output, indent )
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indent( output, indent )
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output << to_s
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end
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def EntityDecl.parse_source source, listener
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md = source.match( PATTERN_RE, true )
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thing = md[0].squeeze(" \t\n\r")
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listener.send inspect.downcase, thing
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end
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end
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end
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end
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