class PDF::Reader::Filter::Ascii85
implementation of the Ascii85 filter
Public Class Methods
new(options = {})
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# File lib/pdf/reader/filter/ascii85.rb, line 9 def initialize(options = {}) @options = options end
Public Instance Methods
filter(data)
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Decode the specified data using the Ascii85 algorithm. Relies on the AScii85 rubygem.
# File lib/pdf/reader/filter/ascii85.rb, line 17 def filter(data) data = "<~#{data}" unless data.to_s[0,2] == "<~" ::Ascii85::decode(data) rescue Exception => e # Oops, there was a problem decoding the stream raise MalformedPDFError, "Error occured while decoding an ASCII85 stream (#{e.class.to_s}: #{e.to_s})" end