Class: PictureTag::Instructions::TagParser

Inherits:
Object
  • Object
show all
Defined in:
lib/jekyll-4-picture-tag/instructions/tag_parser.rb

Overview

This class takes the string given to the jekyll tag, and extracts useful information from it.

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(raw_params) ⇒ TagParser

Returns a new instance of TagParser.



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# File 'lib/jekyll-4-picture-tag/instructions/tag_parser.rb', line 7

def initialize(raw_params)
  @params = PictureTag::Utils.liquid_lookup(raw_params).split

  @preset_name = grab_preset_name

  # source_image keys are media queries, values are source images. The
  # first param specified will be our base image, so it has no associated
  # media query. Yes, nil can be a hash key.
  source_image_names = { nil => @params.shift }

  # Store source keys which fit a pattern in a hash.
  while @params.first =~ /[\w\-]+:/
    media_query = @params.shift[0..-2]
    source_image_names[media_query] = @params.shift
  end

  @source_images = build_sources(source_image_names)

  # Anything left will be html attributes
  @html_attributes_raw = @params.join(' ')
end

Instance Attribute Details

#html_attributes_raw ⇒ Object (readonly)

Returns the value of attribute html_attributes_raw.



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# File 'lib/jekyll-4-picture-tag/instructions/tag_parser.rb', line 6

def html_attributes_raw
  @html_attributes_raw
end

#preset_name ⇒ Object (readonly)

Returns the value of attribute preset_name.



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# File 'lib/jekyll-4-picture-tag/instructions/tag_parser.rb', line 6

def preset_name
  @preset_name
end

#source_images ⇒ Object (readonly)

Returns the value of attribute source_images.



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# File 'lib/jekyll-4-picture-tag/instructions/tag_parser.rb', line 6

def source_images
  @source_images
end