Class: TableStructure::Writer

Inherits:
Object
  • Object
show all
Defined in:
lib/table_structure/writer.rb

Defined Under Namespace

Classes: Output

Instance Method Summary collapse

Constructor Details

#initialize(schema, header_omitted: false, header_context: nil, method: :<<, row_type: :array, **deprecated_options) ⇒ Writer

Returns a new instance of Writer.



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# File 'lib/table_structure/writer.rb', line 5

def initialize(
  schema,
  header_omitted: false,
  header_context: nil,
  method: :<<,
  row_type: :array,
  **deprecated_options
)
  if deprecated_options.key?(:result_type)
    warn '[TableStructure] `:result_type` option has been deprecated. Use `:row_type` option instead.'
    row_type = deprecated_options[:result_type]
  end

  @schema = schema
  @options = {
    header_omitted: header_omitted,
    header_context: header_context,
    method: method,
    row_type: row_type
  }
end

Instance Method Details

#write(items, to:, method: @options[:method], header_omitted: @options[:header_omitted], header_context: @options[:header_context], row_type: @options[:row_type], **deprecated_options, &block) ⇒ Object 



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# File 'lib/table_structure/writer.rb', line 27

def write(
  items,
  to:,
  method: @options[:method],
  header_omitted: @options[:header_omitted],
  header_context: @options[:header_context],
  row_type: @options[:row_type],
  **deprecated_options,
  &block
)
  if deprecated_options.key?(:result_type)
    warn '[TableStructure] `:result_type` option has been deprecated. Use `:row_type` option instead.'
    row_type = deprecated_options[:result_type]
  end

  items = enumerize(items)

  header_options =
    if header_omitted
      false
    else
      { context: header_context }
    end

  @schema.create_table(row_type: row_type) do |table|
    output = Output.new(to, method: method)

    enum =
      Table::Iterator
      .new(
        table,
        header: header_options
      )
      .iterate(items)

    if block_given?
      enum =
        enum
        .lazy
        .map { |row| block.call(row) }
    end

    enum.each { |row| output.write(row) }
  end
  nil
end