Contents

module GDAL
  module DriverExtensions
    
    # The things that this driver can do, as reported by its metadata.
    # Possibilities include:
    #   * :open
    #   * :create
    #   * :copy
    #   * :virtual_io
    #   * :rasters
    #   * :vectors
    #
    # @return [Array<Symbol>]
    def capabilities
      caps = []
      caps << :open if can_open_datasets?
      caps << :create if can_create_datasets?
      caps << :copy if can_copy_datasets?
      caps << :virtual_io if can_do_virtual_io?
      caps << :rasters if can_do_rasters?
      caps << :vectors if can_do_vectors?

      caps
    end

    # @return [Boolean]
    def can_open_datasets?
      metadata_item('DCAP_OPEN') == 'YES'
    end

    # @return [Boolean]
    def can_create_datasets?
      metadata_item('DCAP_CREATE') == 'YES'
    end

    # @return [Boolean]
    def can_copy_datasets?
      metadata_item('DCAP_CREATECOPY') == 'YES'
    end

    # @return [Boolean]
    def can_do_virtual_io?
      metadata_item('DCAP_VIRTUALIO') == 'YES'
    end

    # @return [Boolean]
    def can_do_rasters?
      metadata_item('DCAP_RASTER') == 'YES'
    end

    # @return [Boolean]
    def can_do_vectors?
      metadata_item('DCAP_VECTOR') == 'YES'
    end
  end
end

Version data entries

2 entries across 2 versions & 1 rubygems

Version	Path
ffi-gdal-1.0.0.beta3	lib/gdal/driver_extensions.rb
ffi-gdal-1.0.0.beta1	lib/gdal/driver_extensions.rb