Module: Nanoc::Helpers::Capturing

Included in:
SetContent, Filtering, HTMLEscape, Rendering
Defined in:
lib/nanoc/helpers/capturing.rb

Overview

See Also:

Defined Under Namespace

Classes: GetContent, SetContent

Instance Method Summary collapse

Instance Method Details

#capture(&block) ⇒ String

Returns:

  • (String) 


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# File 'lib/nanoc/helpers/capturing.rb', line 167

def capture(&block)
  # Get erbout so far
  erbout = eval('_erbout', block.binding)
  erbout_length = erbout.length

  # Execute block
  yield

  # Get new piece of erbout
  erbout_addition = erbout[erbout_length..]

  # Remove addition
  erbout[erbout_length..-1] = +''

  # Depending on how the filter outputs, the result might be a
  # single string or an array of strings (slim outputs the latter).
  erbout_addition = erbout_addition.join('') if erbout_addition.is_a? Array

  # Done.
  erbout_addition
end

#content_for(name, &block) ⇒ void #content_for(name, params, &block) ⇒ void #content_for(name, content) ⇒ void #content_for(name, params, content) ⇒ void #content_for(item, name) ⇒ String

Overloads:

  • #content_for(name, &block) ⇒ void

    This method returns an undefined value.

    Parameters:

    • name (Symbol, String)
  • #content_for(name, params, &block) ⇒ void

    This method returns an undefined value.

    Parameters:

    • name (Symbol, String)

    Options Hash (params):

    • existing (Symbol)
  • #content_for(name, content) ⇒ void

    This method returns an undefined value.

    Parameters:

    • name (Symbol, String)
    • content (String)
  • #content_for(name, params, content) ⇒ void

    This method returns an undefined value.

    Parameters:

    • name (Symbol, String)
    • content (String)

    Options Hash (params):

    • existing (Symbol)
  • #content_for(item, name) ⇒ String

    Parameters:

    • name (Symbol, String)

    Returns:

    • (String) 


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# File 'lib/nanoc/helpers/capturing.rb', line 114

def content_for(*args, &)
  if block_given? # Set content
    name = args[0]
    params =
      case args.size
      when 1
        {}
      when 2
        args[1]
      else
        raise(
          ArgumentError,
          'expected 1 or 2 argument (the name ' \
          "of the capture, and optionally params) but got #{args.size} instead",
        )
      end

    SetContent.new(name, params, @item).run(&)
  elsif args.size > 1 && (args.first.is_a?(Symbol) || args.first.is_a?(String)) # Set content
    name = args[0]
    content = args.last
    params =
      case args.size
      when 2
        {}
      when 3
        args[1]
      else
        raise(
          ArgumentError,
          'expected 2 or 3 arguments (the name ' \
          "of the capture, optionally params, and the content) but got #{args.size} instead",
        )
      end

    _erbout = +'' # rubocop:disable Lint/UnderscorePrefixedVariableName
    SetContent.new(name, params, @item).run { _erbout << content }
  else # Get content
    if args.size != 2
      raise(
        ArgumentError,
        'expected 2 arguments (the item ' \
        "and the name of the capture) but got #{args.size} instead",
      )
    end
    requested_item = args[0]
    name = args[1]

    GetContent.new(requested_item, name, @item, @config).run
  end
end