Module: OGR::InternalHelpers::ClassMethods

Defined in:
lib/ogr/internal_helpers.rb

Instance Method Summary collapse

Instance Method Details

#_boolean_access_flag(flag) ⇒ Object

Makes the interface consistent with the access flags for GDAL.

Parameters:

  • flag (String) —

    ‘w’ for writing, ‘r’ for reading.



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# File 'lib/ogr/internal_helpers.rb', line 16

def _boolean_access_flag(flag)
  case flag
  when "w" then true
  when "r" then false
  else raise "Invalid access_flag '#{flag}'.  Use 'r' or 'w'."
  end
end

#_format_time_zone_for_ogr(time_zone) ⇒ Object

OGR’s time zone rules:

* 0 = unknown
* 1 = local time
* 100 = GMT

This converts Ruby’s DateTime time zone info into OGR’s integer.

Parameters:



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# File 'lib/ogr/internal_helpers.rb', line 49

def _format_time_zone_for_ogr(time_zone)
  if /(00:00|GMT)\z/.match?(time_zone)
    100
  elsif time_zone
    1
  else
    0
  end
end

#_format_time_zone_for_ruby(time_zone) ⇒ Object

OGR’s time zone rules:

* 0 = unknown
* 1 = local time
* 100 = GMT

This converts the OGR integer into something usable by Ruby’s DateTime.

Parameters:



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# File 'lib/ogr/internal_helpers.rb', line 32

def _format_time_zone_for_ruby(time_zone)
  case time_zone
  when 0 then nil
  when 1 then (Time.now.getlocal.utc_offset / 3600).to_s
  when 100 then "+0"
  else raise "Unable to process time zone: #{time_zone}"
  end
end