47 lines
1.1 KiB
Ruby
Executable file
47 lines
1.1 KiB
Ruby
Executable file
require 'digest/md5'
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require 'uri/common'
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# A chunk is a pattern of text that can be protected
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# and interrogated by a renderer. Each Chunk class has a
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# +pattern+ that states what sort of text it matches.
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# Chunks are initalized by passing in the result of a
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# match by its pattern.
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module Chunk
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class Abstract
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attr_reader :text
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def initialize(match_data) @text = match_data[0] end
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# Find all the chunks of the given type in content
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# Each time the pattern is matched, create a new
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# chunk for it, and replace the occurance of the chunk
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# in this content with its mask.
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def self.apply_to(content)
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content.gsub!( self.pattern ) do |match|
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content.chunks << self.new($~)
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content.chunks.last.mask(content)
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end
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end
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def pre_mask()
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"chunk#{self.object_id}start "
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end
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def post_mask()
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" chunk#{self.object_id}end"
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end
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def mask(content)
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"chunk#{self.object_id}chunk"
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end
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def revert(content)
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content.sub!( Regexp.new(mask(content)), text )
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end
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def unmask(content)
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self if revert(content)
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end
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end
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end
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