Module: SpatialFeatures::Download

Defined in:
lib/spatial_features/download.rb

Class Method Summary collapse

Class Method Details

.find_in_zip(file, unzip) ⇒ Object 



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# File 'lib/spatial_features/download.rb', line 27

def self.find_in_zip(file, unzip)
  raise "Must specify an :unzip option if opening a zip file. e.g. open(file, :find => '.shp')" unless unzip
  return File.open(Unzip.paths(file, :find => unzip))
end

.normalize_file(file) ⇒ Object 



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# File 'lib/spatial_features/download.rb', line 19

def self.normalize_file(file)
  Tempfile.new.tap do |temp|
    temp.binmode
    temp.write(file.read)
    temp.rewind
  end
end

.open(file, unzip: nil) ⇒ Object 



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# File 'lib/spatial_features/download.rb', line 12

def self.open(file, unzip: nil)
  file = Kernel.open(file)
  file = normalize_file(file) if file.is_a?(StringIO)
  file = find_in_zip(file, unzip) if Unzip.is_zip?(file)
  return file
end

.read(file, unzip: nil) ⇒ Object

file can be a url, path, or file, any of which can return be a zipped archive



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# File 'lib/spatial_features/download.rb', line 6

def self.read(file, unzip: nil)
  file = open(file, unzip: unzip)
  path = ::File.path(file)
  return ::File.read(path)
end