Module: Yerba::Formatting

Defined in:
lib/yerba/formatting.rb

Class Method Summary collapse

Class Method Details

.quote(value, style) ⇒ Object 



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# File 'lib/yerba/formatting.rb', line 5

def self.quote(value, style)
  Yerba.quote_scalar(value.to_s, style)
end

.to_block_yaml_value(value, indent = 0) ⇒ Object 



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# File 'lib/yerba/formatting.rb', line 30

def self.to_block_yaml_value(value, indent = 0)
  prefix = "  " * indent

  case value
  when Array
    return "[]" if value.empty?

    value.map { |item|
      if item.is_a?(Hash)
        inner = to_block_yaml_value(item, indent + 1)
        "#{prefix}- #{inner.lstrip}"
      else
        "#{prefix}- #{to_scalar_value(item)}"
      end
    }.join("\n")
  when Hash
    return "{}" if value.empty?

    value.map { |key, value|
      case value
      when Array, Hash
        if value.empty?
          "#{prefix}#{key}: #{to_yaml_value(value)}"
        else
          "#{prefix}#{key}:\n#{to_block_yaml_value(value, indent + 1)}"
        end
      else
        "#{prefix}#{key}: #{to_scalar_value(value)}"
      end
    }.join("\n")
  else
    to_scalar_value(value)
  end
end

.to_scalar_value(value) ⇒ Object 



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# File 'lib/yerba/formatting.rb', line 65

def self.to_scalar_value(value)
  case value
  when true then "true"
  when false then "false"
  when nil then "null"
  when String then Yerba.quote_scalar(value)
  else value.to_s
  end
end

.to_yaml_document(value) ⇒ Object 



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# File 'lib/yerba/formatting.rb', line 75

def self.to_yaml_document(value)
  case value
  when Array
    value.empty? ? "---\n[]\n" : "---\n#{to_block_yaml_value(value)}\n"
  when Hash
    value.empty? ? "---\n{}\n" : "---\n#{to_block_yaml_value(value)}\n"
  else
    raise ArgumentError, "expected Array or Hash, got #{value.class}"
  end
end

.to_yaml_value(value) ⇒ Object 



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# File 'lib/yerba/formatting.rb', line 9

def self.to_yaml_value(value)
  case value
  when Array
    return "[]" if value.empty?

    items = value.map { |item| to_yaml_value(item) }

    "[#{items.join(", ")}]"
  when Hash
    return "{}" if value.empty?

    pairs = value.map { |key, value| "#{key}: #{to_yaml_value(value)}" }

    "{#{pairs.join(", ")}}"
  when true then "true"
  when false then "false"
  when nil then "null"
  else value.to_s
  end
end