Class: DxfIO::Reader

Inherits:
Object
  • Object
show all
Defined in:
lib/dxf_io/reader.rb

Overview

based on DXF AutoCAD 2008 documentation (images.autodesk.com/adsk/files/acad_dxf0.pdf)

Constant Summary collapse

SECTIONS_LIST = 
DxfIO::Constants::SECTIONS_LIST
HEADER_NAME = 
DxfIO::Constants::HEADER_NAME

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(options) ⇒ Reader

Returns a new instance of Reader.



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# File 'lib/dxf_io/reader.rb', line 8

def initialize(options)
  if options.is_a? String
    @filename = options
  elsif options.is_a? Hash
    if options[:path].present?
      @filename = options[:path]
    else
      raise ArgumentError, 'options must contain a :path key'
    end
    @encoding = options[:encoding] || 'Windows-1251'
  end
end

Class Method Details

.open(options) ⇒ Object 



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# File 'lib/dxf_io/reader.rb', line 22

def open(options)
  self.new(options).tap do |reader_instance|
    if block_given?
      yield reader_instance
    end
  end
end

Instance Method Details

#parse(filename = @filename, encoding = @encoding) ⇒ Object 



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# File 'lib/dxf_io/reader.rb', line 50

def parse(filename = @filename, encoding = @encoding)
  read_flag = "r:#{encoding}:UTF-8"
  fp = File.open(filename, read_flag)
  dxf = {HEADER_NAME => {}}
  SECTIONS_LIST.each do |section_name|
    dxf[section_name] = []
  end
  #
  # main loop
  #
  begin
    while true
      c, v = read_codes(fp)
      break if v == 'EOF'
      if v == 'SECTION'
        c, v = read_codes(fp)
        if v == HEADER_NAME
          hdr = dxf[HEADER_NAME]
          while true
            c, v = read_codes(fp)
            break if v == 'ENDSEC' # or v == "BLOCKS" or v == "ENTITIES" or v == "EOF"
            if c == 9
              key = v
              hdr[key] = {}
            else
              add_att(hdr[key], c, v)
            end
          end # while
        elsif SECTIONS_LIST.include?(v)
          section = dxf[v]
          parse_entities(section, fp)
        end
      end # if in SECTION
    end # main loop
  ensure
    fp.close unless fp.nil?
  end

  dxf
end

#rerun ⇒ Object 



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# File 'lib/dxf_io/reader.rb', line 46

def rerun
  @result_hash = parse
end

#run ⇒ Object Also known as: to_hash, to_h 



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# File 'lib/dxf_io/reader.rb', line 39

def run
  @result_hash ||= parse
end