class PDF::Core::Stream
Attributes
filters[R]
Public Class Methods
new(io = nil)
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# File lib/pdf/core/stream.rb, line 14 def initialize(io = nil) @filtered_stream = '' @stream = io @filters = FilterList.new end
Public Instance Methods
<<(io)
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# File lib/pdf/core/stream.rb, line 20 def <<(io) (@stream ||= +'') << io @filtered_stream = nil self end
compress!()
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# File lib/pdf/core/stream.rb, line 26 def compress! unless @filters.names.include? :FlateDecode @filtered_stream = nil @filters << :FlateDecode end end
compressed?()
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# File lib/pdf/core/stream.rb, line 33 def compressed? @filters.names.include? :FlateDecode end
data()
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# File lib/pdf/core/stream.rb, line 71 def data if @stream filter_names = @filters.names filter_params = @filters.decode_params d = { Length: filtered_stream.length } if filter_names.any? d[:Filter] = filter_names end if filter_params.any? { |f| !f.nil? } d[:DecodeParms] = filter_params end d else {} end end
empty?()
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# File lib/pdf/core/stream.rb, line 37 def empty? @stream.nil? end
filtered_stream()
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# File lib/pdf/core/stream.rb, line 41 def filtered_stream if @stream if @filtered_stream.nil? @filtered_stream = @stream.dup @filters.each do |(filter_name, params)| filter = PDF::Core::Filters.const_get(filter_name) if filter @filtered_stream = filter.encode @filtered_stream, params end end end @filtered_stream # XXX Fillter stream end end
inspect()
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# File lib/pdf/core/stream.rb, line 92 def inspect format( '#<%<class>s:0x%<object_id>014x '\ '@stream=%<stream>s, @filters=%<filters>s>', class: self.class.name, object_id: object_id, stream: @stream.inspect, filters: @filters.inspect ) end
length()
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# File lib/pdf/core/stream.rb, line 59 def length @stream.length end
object()
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# File lib/pdf/core/stream.rb, line 63 def object if filtered_stream "stream\n#{filtered_stream}\nendstream\n" else '' end end