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: { 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: { context: nil },
  method: :<<,
  row_type: :array,
  **deprecated_options
)
  if deprecated_options.key?(:header_omitted)
    header_omitted = deprecated_options[:header_omitted]
    warn "[TableStructure] `header_omitted: #{!!header_omitted}` option has been deprecated. Use `header: #{!header_omitted}` option instead."
    header = !header_omitted
  end

  if deprecated_options.key?(:header_context)
    header_context = deprecated_options[:header_context]
    warn '[TableStructure] `:header_context` option has been deprecated. Use `header: { context: ... }` option instead.'
    header = { context: header_context }
  end

  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: header,
    method: method,
    row_type: row_type
  }
end

Instance Method Details

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



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# File 'lib/table_structure/writer.rb', line 37

def write(
  items,
  to:,
  method: @options[:method],
  **deprecated_options,
  &block
)
  header = @options[:header]
  row_type = @options[:row_type]

  if deprecated_options.key?(:header)
    header = deprecated_options[:header]
    warn '[TableStructure] Specify :header option as an argument for initialize method.'
  end

  if deprecated_options.key?(:header_omitted)
    header_omitted = deprecated_options[:header_omitted]
    warn "[TableStructure] `header_omitted: #{!!header_omitted}` option has been deprecated. Use `header: #{!header_omitted}` option instead."
    header = !header_omitted
  end

  if deprecated_options.key?(:header_context)
    header_context = deprecated_options[:header_context]
    warn '[TableStructure] `:header_context` option has been deprecated. Use `header: { context: ... }` option instead.'
    header = { context: header_context }
  end

  if deprecated_options.key?(:row_type)
    row_type = deprecated_options[:row_type]
    warn '[TableStructure] Specify :row_type option as an argument for initialize method.'
  end

  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)

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

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

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

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