Class: Opus

Inherits:
Object
  • Object
show all
Defined in:
lib/opus.rb,
lib/opus/version.rb

Constant Summary collapse

VERSION = 
"0.1.0"

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Opus

Creates a new opus instance.



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# File 'lib/opus.rb', line 8

def initialize()
  self.page_layout = :landscape
  self.column_count = 5
  self.font_family = "Courier"
  self.font_size = 4
end

Instance Attribute Details

#column_count ⇒ Object

The number of columns per page.



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# File 'lib/opus.rb', line 16

def column_count
  @column_count
end

#font_family ⇒ Object

The font family to use.



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# File 'lib/opus.rb', line 19

def font_family
  @font_family
end

#font_size ⇒ Object

The font size to use.



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# File 'lib/opus.rb', line 22

def font_size
  @font_size
end

#page_layout ⇒ Object

The page layout to use (portrait, landscape).



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# File 'lib/opus.rb', line 25

def page_layout
  @page_layout
end

Instance Method Details

#generate(filenames, output) ⇒ Object

Generates a PDF from a list of source files.

Parameters:

  • filenames (Array) —

    a list of input files.

  • output (IO) —

    the destination for the PDF output.



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# File 'lib/opus.rb', line 31

def generate(filenames, output)
  column_count = self.column_count
  font_family = self.font_family
  font_size = self.font_size

  # Columnize lines in PDF.
  Prawn::Document.generate(output, page_layout: page_layout) do
    font(font_family, :size => font_size) do
      column_box([0, cursor], :columns => column_count, :width => bounds.width) do
        filenames.each do |filename|
          content = IO.read(filename).gsub(/^/, ". ")
          text("<b>#{filename}</b>", inline_format: true)
          text(content)
          text("\n\n")
        end
      end
    end
  end
end