Class: PDF::Reader::CMap

Inherits:

Object

• Object
• PDF::Reader::CMap

show all

Defined in:

lib/pdf/reader/cmap.rb

Overview

Instance Attribute Summary (collapse)

• - (Object) map readonly

  Returns the value of attribute map.

Instance Method Summary (collapse)

• - (Object) decode(c)
• - (CMap) initialize(data) constructor

  A new instance of CMap.

• - (Object) process_data(data)
• - (Object) size

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# File 'lib/pdf/reader/cmap.rb', line 31

def initialize(data)
  @map = {}
  process_data(data)
end

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# File 'lib/pdf/reader/cmap.rb', line 29

def map
  @map
end

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# File 'lib/pdf/reader/cmap.rb', line 63

def decode(c)
  # TODO: implement the conversion
  return c unless c.class == Fixnum
  @map[c]
end

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# File 'lib/pdf/reader/cmap.rb', line 36

def process_data(data)
  mode = nil
  instructions = ""

  data.each_line do |l|
    if l.include?("beginbfchar")
      mode = :char
    elsif l.include?("endbfchar")
      process_bfchar_instructions(instructions)
      instructions = ""
      mode = nil
    elsif l.include?("beginbfrange")
      mode = :range
    elsif l.include?("endbfrange")
      process_bfrange_instructions(instructions)
      instructions = ""
      mode = nil
    elsif mode == :char || mode == :range
      instructions << l
    end
  end
end

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# File 'lib/pdf/reader/cmap.rb', line 59

def size
  @map.size
end