Class: PictureTag::Cache

Inherits:
Object
  • Object
show all
Defined in:
lib/jekyll_picture_tag/cache.rb

Overview

Store expensive bits of information between text files. Originally cached width & heights of images in addition to digests, now just image digests.

Instance Method Summary collapse

Constructor Details

#initialize(base_name) ⇒ Cache

Returns a new instance of Cache.



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# File 'lib/jekyll_picture_tag/cache.rb', line 7

def initialize(base_name)
  @base_name = base_name
end

Instance Method Details

#[](key) ⇒ Object 



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# File 'lib/jekyll_picture_tag/cache.rb', line 11

def [](key)
  data[key]
end

#[]=(key, value) ⇒ Object

Raises:

  • (ArgumentError) 


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# File 'lib/jekyll_picture_tag/cache.rb', line 15

def []=(key, value)
  raise ArgumentError unless template.keys.include? key

  data[key] = value
end

#write ⇒ Object

Call after updating data.



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# File 'lib/jekyll_picture_tag/cache.rb', line 22

def write
  return if PictureTag.config['disable_disk_cache']

  FileUtils.mkdir_p(File.join(base_directory, sub_directory))

  File.open(filename, 'w+') do |f|
    f.write JSON.generate(data)
  end
end