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magick.rb
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magick.rb
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# Frozen-string-literal: true
# Copyright: 2012 - 2020 - ISC License
# Author: Jordon Bedwell
# Encoding: utf-8
module Jekyll
module Assets
module Plugins
class MiniMagick < Proxy
content_types %r@^image/(?!x-icon$)[a-zA-Z0-9\-_+]+$@
arg_keys :magick
class SameType < StandardError
def initialize(type)
"Trying to convert #{type} to #{type} won't work."
end
end
def process
img = ::MiniMagick::Image.new(@file)
magick_format(img) if args[:magick][:format]
img.combine_options do |c|
args[:magick].keys.reject { |k| k == :format }.each do |k|
m = "magick_#{k}"
if respond_to?(m, true)
method(m).arity == 2 ? send(m, img, c) : send(m, c)
end
end
end
@file
ensure
img&.destroy!
end
def runners
private_methods(true).select do |v|
v =~ %r!^magick_! && v != :magick_format
end
end
private
def magick_format(img)
format = ".#{args[:magick][:format].sub(%r!^\.!, '')}"
ext = env.mime_exts.find { |k, v| k == format || v == format }
return unless ext
ext, type = ext
raise SameType, type if type == asset.content_type
img.format(ext.sub(".", ""))
end
private
def magick_transparency(cmd)
if args[:magick][:transparency]
cmd.transparency args[:magick][:transparency]
end
end
private
def magick_background(cmd)
if args[:magick].key?(:background)
cmd.background args[:magick][
:background
]
end
end
private
def magick_compress(cmd)
if args[:magick].key?(:compress)
cmd.compress args[:magick][:compress]
end
end
private
def magick_quality(cmd)
if args[:magick].key?(:quality)
cmd.quality args[:magick][:quality]
end
end
private
def magick_resize(cmd)
if args[:magick].key?(:resize)
cmd.resize args[:magick][:resize]
end
end
private
def magick_rotate(cmd)
if args[:magick].key?(:rotate)
cmd.rotate args[:magick][:rotate]
end
end
private
def magick_flip(cmd)
if args[:magick].key?(:flip)
cmd.flip args[:magick][:flip]
end
end
private
def magick_crop(cmd)
if args[:magick].key?(:crop)
cmd.crop args[:magick][:crop]
end
end
private
def magick_extent(cmd)
if args[:magick].key?(:extent)
cmd.extent args[:magick][:extent]
end
end
private
def magick_gravity(cmd)
if args[:magick].key?(:gravity)
cmd.gravity args[:magick][:gravity]
end
end
private
def magick_strip(cmd)
cmd.strip
end
private
def magick_preset_resize(img, cmd)
width, height = img.width * 2, img.height * 2 if args[:magick].key?(:double)
width, height = img.width / 2, img.height / 2 if args[:magick].key?(:half)
cmd.resize "#{width}x#{height}" if width && height
end
alias magick_double magick_preset_resize
alias magick_quarter magick_preset_resize
alias magick_half magick_preset_resize
end
end
end
end