Class: Nanoc::Extra::SrcsetParser Private

Inherits:
Object
  • Object
show all
Defined in:
lib/nanoc/extra/srcset_parser.rb

This class is part of a private API. You should avoid using this class if possible, as it may be removed or be changed in the future.

Defined Under Namespace

Classes: InvalidFormat

Constant Summary collapse

REGEX_REST =

This constant is part of a private API. You should avoid using this constant if possible, as it may be removed or be changed in the future. 

/
  (               # Zero or one of the following:
    (             #   A width descriptor, consisting of:
      \s+         #     ASCII whitespace
      \d+         #     a valid non-negative integer
      w           #     a U+0077 LATIN SMALL LETTER W character
    )
    |
    (             #   A pixel density descriptor, consisting of
      \s+         #     ASCII whitespace
      (\d*\.)?\d+ #     a valid floating-point number
      x           #     and a U+0078 LATIN SMALL LETTER X character.
    )
  )*
/x

Instance Method Summary collapse

Constructor Details

#initialize(value) ⇒ SrcsetParser

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Returns a new instance of SrcsetParser.



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# File 'lib/nanoc/extra/srcset_parser.rb', line 30

def initialize(value)
  @value = value
end

Instance Method Details

#call ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/nanoc/extra/srcset_parser.rb', line 34

def call
  matches = []

  loop do
    match = {}

    scan(/\s*/)
    match[:url] = scan(/[^, ]+/)
    match[:rest] = scan(REGEX_REST)
    scan(/\s*/)

    matches << match

    next if try_scan(/,/)
    break if eos?

    raise(InvalidFormat)
  end

  matches
rescue InvalidFormat
  @value
end