Method: Gerber::Parser#parse

Defined in:
lib/gerber/parser.rb

#parse(input) ⇒ Object

Parse the given IO stream

Parameters:

  • input (IO) —

    An IO-like object to parse



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# File 'lib/gerber/parser.rb', line 80

def parse(input)
    input.each('*') do |block|
	block.strip!
	next if !block || block.empty?
	raise ParseError, "Found blocks after M02" if self.eof
	case block
	    when /^%AM/ # Special handling for aperture macros
		parse_parameter((block + input.gets('%')).gsub(/[\n%]/,''))
	    when /^%[A-Z]{2}/
		(block + input.gets('%')).gsub(/[\n%]/,'').gsub(/\* /,'').lines('*') {|b| parse_parameter(b)}
	    when /^D(\d{2,3})/
		current_layer.parse_dcode(block)
	    when /^M0(0|1|2)/
		mcode = $1
		raise ParseError, "Invalid M code: #{m}" unless mcode
		@eof = true if mcode.to_i == 2
	    when /^G54D(\d{2,3})/	# Deprecated G54 function code
		current_layer.parse_gcode(54, nil, nil, nil, nil, $1)
	    when /^G70/
		set_inches
	    when /^G71/
		set_millimeters
	    when /^(G(\d{2}))?(X([\d\+-]+))?(Y([\d\+-]+))?(I([\d\+-]+))?(J([\d\+-]+))?(D0(1|2|3))?/
		gcode, dcode = $2, $12
		x, y, i, j = [$4, $6, $8, $10].map {|a| parse_coordinate(a) }
		current_layer.parse_gcode(gcode, x, y, i, j, dcode)
	    else
		raise ParseError,"Unrecognized block: \"#{block}\""
	end
    end

    # FIXME apply any @rotation

    @layers = @layer_parsers.map {|parser| parser.layer }.select {|layer| !layer.empty? }

    gerber = Gerber.new
    gerber.apertures.replace @apertures
    gerber.coordinate_format = self.integer_places, self.decimal_places
    gerber.layers.replace @layers
    gerber.zero_omission = self.zero_omission
    gerber
end