Module: HexaPDF::CLI::Usage::ParserExtension

Defined in:
lib/hexapdf/cli/usage.rb

Overview

Modifies HexaPDF::Parser to retrieve space used by indirect objects.

Instance Method Summary collapse

Instance Method Details

#initialize ⇒ Object

:nodoc:



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# File 'lib/hexapdf/cli/usage.rb', line 60

def initialize(*)
  super
  @last_size = nil
end

#load_compressed_object(xref_entry) ⇒ Object

:nodoc:



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# File 'lib/hexapdf/cli/usage.rb', line 86

def load_compressed_object(xref_entry)
  result = super
  offsets = @object_stream_data[xref_entry.objstm].instance_variable_get(:@offsets)
  @last_size = if xref_entry.pos == offsets.size - 1
                 @object_stream_data[xref_entry.objstm].instance_variable_get(:@tokenizer).
                   io.size - offsets[xref_entry.pos]
               else
                 offsets[xref_entry.pos + 1] - offsets[xref_entry.pos]
               end
  result
end

#load_object(xref_entry) ⇒ Object

:nodoc:



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# File 'lib/hexapdf/cli/usage.rb', line 66

def load_object(xref_entry)
  super.tap do |obj|
    if xref_entry.type == :compressed
      obj.data.size_in_object_stream = @last_size
    elsif xref_entry.type == :in_use
      obj.data.size = @last_size
    end
    @last_size = nil
  end
end

#parse_indirect_object(offset = nil) ⇒ Object

:nodoc:



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# File 'lib/hexapdf/cli/usage.rb', line 78

def parse_indirect_object(offset = nil)
  real_offset = (offset ? @header_offset + offset : @tokenizer.pos)
  result = super
  @last_size = @tokenizer.pos - real_offset
  result
end