Class: GeoRuby::SimpleFeatures::EWKBParser

Inherits:
Object
  • Object
show all
Defined in:
lib/geo_ruby/simple_features/ewkb_parser.rb

Overview

Parses EWKB strings and notifies of events (such as the beginning of the definition of geometry, the value of the SRID...) the factory passed as argument to the constructor.

=Example factory = GeometryFactory::new ewkb_parser = EWKBParser::new(factory) ewkb_parser.parse() geometry = @factory.geometry

You can also use directly the static method Geometry.from_ewkb

Direct Known Subclasses

HexEWKBParser

Instance Method Summary collapse

Constructor Details

#initialize(factory) ⇒ EWKBParser 



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# File 'lib/geo_ruby/simple_features/ewkb_parser.rb', line 28

def initialize(factory)
  @factory = factory
  @parse_options ={
    1 => method(:parse_point),
    2 => method(:parse_line_string),
    3 => method(:parse_polygon),
    4 => method(:parse_multi_point),
    5 => method(:parse_multi_line_string),
    6 => method(:parse_multi_polygon),
    7 => method(:parse_geometry_collection)
  }
end

Instance Method Details

#parse(ewkb) ⇒ Object

Parses the ewkb string passed as argument and notifies the factory of events



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# File 'lib/geo_ruby/simple_features/ewkb_parser.rb', line 42

def parse(ewkb)
  @factory.reset
  @unpack_structure=UnpackStructure::new(ewkb)
  @with_z = false
  @with_m = false
  parse_geometry
  @unpack_structure.done
  @srid=nil
end