Class: Inkscape::Merge::Processor

Inherits:
Object
  • Object
show all
Defined in:
lib/inkscape_merge/processor.rb

Overview

Main class to initialize processing

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Processor

Initialize the processor, setting files and options



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# File 'lib/inkscape_merge/processor.rb', line 14

def initialize
  @options = OpenStruct.new
  # Default options
  @options.format = "pdf"
  @options.csv_options = {:headers => true, :col_sep => ',', :encoding => 'utf-8'}
  @options.limit = 0
  @options.dpi = 300
  @options.inkscape = %x(which inkscape).chomp
  # If no Inkscape in PATH, try to guess from platform
  if options.inkscape.empty?
    options.inkscape = case RUBY_PLATFORM
      when /darwin/
        "/Applications/Inkscape.app/Contents/Resources/bin/inkscape"
      end
  end

end

Instance Attribute Details

#options ⇒ Object (readonly)

Returns the value of attribute options.



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# File 'lib/inkscape_merge/processor.rb', line 11

def options
  @options
end

Instance Method Details

#run ⇒ Object

Iterate over all data rows and generate output files Optionally stop when LIMIT is reached



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# File 'lib/inkscape_merge/processor.rb', line 34

def run
  validate_options

  # Open the files
  @svg = File.read options.svg_file
  @data_file = DataParser.detect(options)

  count = 0
  headers = @data_file.headers
  pattern = /%VAR_(#{headers.map(&:to_s).join("|")})%/
  @data_file.each{|row|
    break if @options.limit > 0 && count >= @options.limit
    count += 1
    puts "Row: #{count}"
    tmp_file = Tempfile.new('inkscape_merge')
    begin
      (outfile,merged_svg) = [@options.output,@svg].map{|s|
          s.gsub(pattern){|m|
            puts $1 if @options.verbose
            # return corresponding value from current row
            row[$1]
        }
      }

      # Write merged SVG out
      tmp_file.puts merged_svg
      tmp_file.close

      # Sprintf outfile with current row number
      outfile %= count

      # Generate output path
      FileUtils.mkdir_p(File.dirname outfile)

      # Generate the file itself
      ink_generate tmp_file.path, Shellwords.escape(outfile), @options.format, @options.dpi
    rescue => e
      $stderr.puts "ERROR: #{e}"
      $stderr.puts e.backtrace if @options.verbose
    ensure
      tmp_file.unlink
    end
  }
end