dragonfly_libvips.rb

# frozen_string_literal: true

require "dragonfly"
require "dragonfly_libvips/dimensions"
require "dragonfly_libvips/plugin"
require "dragonfly_libvips/version"
require "vips"

module DragonflyLibvips
  class UnsupportedFormat < RuntimeError; end
  class UnsupportedOutputFormat < RuntimeError; end

  CMYK_PROFILE_PATH = File.expand_path("../vendor/cmyk.icm", __dir__)
  EPROFILE_PATH = File.expand_path("../vendor/sRGB_v4_ICC_preference.icc", __dir__)

  SUPPORTED_FORMATS = begin
    output = `vips -l | grep -i ForeignLoad`
    output.scan(/\.(\w{1,4})/).flatten.compact.sort.map(&:downcase).uniq
  end

  SUPPORTED_OUTPUT_FORMATS = begin
    output = `vips -l | grep -i ForeignSave`
    output.scan(/\.(\w{1,4})/).flatten.compact.sort.map(&:downcase).uniq
  end - %w[
    csv
    fit
    fits
    fts
    mat
    pbm
    pfm
    pgm
    ppm
    raw
    v
    vips
  ]

  FORMATS_WITHOUT_PROFILE_SUPPORT = %w[
    avif
    bmp
    dz
    gif
    hdr
    heic
    heif
    j2c
    j2k
    jp2
    jpc
    jpt
    jxl
    szi
    webp
  ]

  private
    def self.stringify_keys(hash = {})
      hash.transform_keys { |k| k.to_s }
    end

    def self.symbolize_keys(hash = {})
      hash.transform_keys { |k| k.to_sym }
    end
end