Class: Yuzu::Command::Generate

Inherits:
ConfiglessCommand show all
Defined in:
lib/yuzu/commands/generate.rb

Overview

Generate handles some cross-media production (e.g. pdf) and handling of the creation of files (e.g. thumbnails).

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from ConfiglessCommand

#initialize, requires_config?

Constructor Details

This class inherits a constructor from Yuzu::Command::ConfiglessCommand

Class Method Details

.help(method) ⇒ Object 



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# File 'lib/yuzu/commands/generate.rb', line 82

def self.help method
  case method
  when :thumbnails
    %Q{Generates small, medium, and large thumbnail images from a given path.
Uses the Mac 'sips' command-line tool.}

  else
    "No help available for #{method}."

  end
end

Instance Method Details

#config ⇒ Object 



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# File 'lib/yuzu/commands/generate.rb', line 65

def config
  if not File.exists?("yuzu.yml") and not File.exists?("config/yuzu.yml")
    # TODO Update to use Path objects.
    FileUtils.copy(
      "#{File.dirname(__FILE__)}/../templates/yuzu.yml",
      "#{Dir.pwd}/config/yuzu.yml"
    )

    $stderr.puts %Q{Copied a sample config file into the current folder. \
Update it with your remote server information.}

  else
    $stderr.puts %Q{Config file yuzu.yml already exists. Please rename or \
erase it to generate a new one.}
  end
end

#index ⇒ Object 



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# File 'lib/yuzu/commands/generate.rb', line 8

def index
end

#thumbnails ⇒ Object

TODO: Put this in its own class, update it, and integrate with the rest of the app.



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# File 'lib/yuzu/commands/generate.rb', line 24

def thumbnails
  path = args.first
  web_image_types = [".png", ".jpg", ".gif"]
  thumbnail_types = @config.thumbnails.keys

  thumbnail_endings = []
  thumbnail_types.each do |type|
    web_image_types.each do |ext|
      thumbnail_endings += ["-#{type}#{ext}"]
    end
  end

  if File.directory?(path)
    # Get all the original images requested.
    all_files = Dir[File.join(path, "**/*")]

    images = all_files.select { |f|
                web_image_types.include?(File.extname(f))
              }.reject { |f|
                f[0].chr == "_" or 
                f.include?("#{File::SEPARATOR}_") or
                f.includes_one_of?(thumbnail_endings)
              }
  else
    # A single image.
    images = [path]
  end

  images.each do |image_path|
    ext = File.extname(image_path)

    # Loop through the configured thumbnail types ("small", "medium", etc.)
    thumbnail_types.each do |thumbnail_type|
      thumbnail_path = image_path.gsub(ext, "-#{thumbnail_type}#{ext}")
      thumbnail_size = @config.thumbnails[thumbnail_type]

      $stderr.puts `cp #{image_path} #{thumbnail_path}; sips --resampleWidth #{thumbnail_size} #{thumbnail_path}`
    end
  end
end