diff options
Diffstat (limited to 'lib/tasks/pngquant.rake')
| -rw-r--r-- | lib/tasks/pngquant.rake | 50 |
1 files changed, 3 insertions, 47 deletions
diff --git a/lib/tasks/pngquant.rake b/lib/tasks/pngquant.rake index ceb4de55373..63bc1c7c16e 100644 --- a/lib/tasks/pngquant.rake +++ b/lib/tasks/pngquant.rake @@ -2,10 +2,10 @@ return if Rails.env.production? require 'png_quantizator' require 'parallel' +require_relative '../../tooling/lib/tooling/images' # The amount of variance (in bytes) allowed in # file size when testing for compression size -TOLERANCE = 10000 namespace :pngquant do # Returns an array of all images eligible for compression @@ -13,55 +13,13 @@ namespace :pngquant do Dir.glob('doc/**/*.png', File::FNM_CASEFOLD) end - # Runs pngquant on an image and optionally - # writes the result to disk - def compress_image(file, overwrite_original) - compressed_file = "#{file}.compressed" - FileUtils.copy(file, compressed_file) - - pngquant_file = PngQuantizator::Image.new(compressed_file) - - # Run the image repeatedly through pngquant until - # the change in file size is within TOLERANCE - loop do - before = File.size(compressed_file) - pngquant_file.quantize! - after = File.size(compressed_file) - break if before - after <= TOLERANCE - end - - savings = File.size(file) - File.size(compressed_file) - is_uncompressed = savings > TOLERANCE - - if is_uncompressed && overwrite_original - FileUtils.copy(compressed_file, file) - end - - FileUtils.remove(compressed_file) - - [is_uncompressed, savings] - end - - # Ensures pngquant is available and prints an error if not - def check_executable - unless system('pngquant --version', out: File::NULL) - warn( - 'Error: pngquant executable was not detected in the system.'.color(:red), - 'Download pngquant at https://pngquant.org/ and place the executable in /usr/local/bin'.color(:green) - ) - abort - end - end - desc 'GitLab | Pngquant | Compress all documentation PNG images using pngquant' task :compress do - check_executable - files = doc_images puts "Compressing #{files.size} PNG files in doc/**" Parallel.each(files) do |file| - was_uncompressed, savings = compress_image(file, true) + was_uncompressed, savings = Tooling::Image.compress_image(file) if was_uncompressed puts "#{file} was reduced by #{savings} bytes" @@ -71,13 +29,11 @@ namespace :pngquant do desc 'GitLab | Pngquant | Checks that all documentation PNG images have been compressed with pngquant' task :lint do - check_executable - files = doc_images puts "Checking #{files.size} PNG files in doc/**" uncompressed_files = Parallel.map(files) do |file| - is_uncompressed, _ = compress_image(file, false) + is_uncompressed, _ = Tooling::Image.compress_image(file, true) if is_uncompressed puts "Uncompressed file detected: ".color(:red) + file file |