Contents

# frozen_string_literal: true

require 'rmagick'

# This StaticFile subclass adds additional functionality for images in the
# gallery
class CheesyGallery::BaseImageFile < Jekyll::StaticFile
  @@render_cache = Jekyll::Cache.new('CheesyGallery::Render') # don't need to worry about inheritance here # rubocop:disable Style/ClassVars

  def initialize(site, collection, file, dest_path = nil)
    @source_file = file
    super(site, site.source, File.dirname(file.relative_path), dest_path || file.name, collection)
  end

  # use the source file's path for this, as this value is used all over the
  # place for mtime checking
  def path
    @source_file.path
  end

  # overwrite this method to add additional processing
  def process_and_write(img, path)
    img.write(path) {}
  end

  # Inject cache here to override default delete-before-copy behaviour
  # See jekyll:lib/jekyll/static_file.rb for source
  def write(dest)
    dest_path = destination(dest)
    return false if File.exist?(dest_path) && !modified?

    self.class.mtimes[path] = mtime

    return if @@render_cache.key?("#{dest_path}-rendered") && File.exist?(dest_path)

    FileUtils.mkdir_p(File.dirname(dest_path))
    FileUtils.rm(dest_path) if File.exist?(dest_path)
    copy_file(dest_path)

    @@render_cache["#{dest_path}-rendered"] = true

    true
  end

  private

  # instead of copying, allow rmagick processing
  # this is only called if the mtime doesn't match
  def copy_file(dest_path)
    source = Magick::ImageList.new(path)
    begin
      Jekyll.logger.debug 'Rendering:', dest_path
      process_and_write(source, dest_path)
    ensure
      # clean up cache
      source.destroy!
    end

    unless File.symlink?(dest_path) # rubocop:disable Style/GuardClause
      File.utime(self.class.mtimes[@source_file.path], self.class.mtimes[@source_file.path], dest_path)
    end
  end
end

Version data entries

1 entries across 1 versions & 1 rubygems

Version	Path
cheesy-gallery-1.1.1	lib/cheesy-gallery/base_image_file.rb