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#!/usr/bin/env ruby
# frozen_string_literal: true
require 'rails'
require 'png_quantizator'
require 'parallel'
require 'rainbow/ext/string'
require_relative '../tooling/lib/tooling/image'
return if Rails.env.production?
def usage
puts <<~EOF
Usage: #{$0} [compress|lint] [PATH..]
compress Compress all documentation PNG images using pngquant.
lint Checks that all documentation PNG images have been compressed with pngquant.
PATH One or more files or directories. If empty, `doc/**/*.png` is used.
EOF
end
command = ARGV.shift
paths = ARGV.presence || ['doc']
files = paths.flat_map do |path|
File.directory?(path) ? Dir.glob(File.join(path, '/**/*.png')) : path
end
case command
when 'compress'
puts "Compressing #{files.size} PNG files"
Parallel.each(files) do |file|
was_uncompressed, savings = Tooling::Image.compress_image(file)
if was_uncompressed
puts "#{file} was reduced by #{savings} bytes"
end
end
when 'lint'
puts "Checking #{files.size} PNG files"
uncompressed_files = Parallel.map(files) do |file|
is_uncompressed, _ = Tooling::Image.compress_image(file, true)
if is_uncompressed
puts "Uncompressed file detected: ".color(:red) + file
file
end
end.compact
if uncompressed_files.empty?
puts "All documentation images are optimally compressed!".color(:green)
else
warn(
"The #{uncompressed_files.size} image(s) above have not been optimally compressed using pngquant.".color(:red),
'Please run "bin/pngquant compress" and commit the result.'
)
abort
end
else
usage
end
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