Sha256: d7d6bf3f27ea34f5ab9b1b68be5271b601c248c1b5baa8d83f2ed6b89646b2f4
Contents?: true
Size: 943 Bytes
Versions: 7
Compression:
Stored size: 943 Bytes
Contents
# coding: utf-8
# typed: strict
# frozen_string_literal: true
#
class PDF::Reader
module Filter # :nodoc:
# implementation of the AsciiHex stream filter
class AsciiHex
def initialize(options = {})
@options = options
end
################################################################################
# Decode the specified data using the AsciiHex algorithm.
#
def filter(data)
data.chop! if data[-1,1] == ">"
data = data[1,data.size] if data[0,1] == "<"
return "" if data.nil?
data.gsub!(/[^A-Fa-f0-9]/,"")
data << "0" if data.size % 2 == 1
data.scan(/.{2}/).flatten.map { |s| s.hex.chr }.join("")
rescue Exception => e
# Oops, there was a problem decoding the stream
raise MalformedPDFError,
"Error occured while decoding an ASCIIHex stream (#{e.class.to_s}: #{e.to_s})"
end
end
end
end
Version data entries
7 entries across 7 versions & 1 rubygems