class ActiveStorage::Analyzer::ImageAnalyzer::ImageMagick
This analyzer relies on the third-party MiniMagick gem. MiniMagick requires the ImageMagick system library.
Public Class Methods
accept?(blob)
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Calls superclass method
ActiveStorage::Analyzer::ImageAnalyzer::accept?
# File lib/active_storage/analyzer/image_analyzer/image_magick.rb, line 7 def self.accept?(blob) super && ActiveStorage.variant_processor == :mini_magick end
Private Instance Methods
read_image() { |image| ... }
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# File lib/active_storage/analyzer/image_analyzer/image_magick.rb, line 12 def read_image begin require "mini_magick" rescue LoadError logger.info "Skipping image analysis because the mini_magick gem isn't installed" return {} end download_blob_to_tempfile do |file| image = instrument("mini_magick") do MiniMagick::Image.new(file.path) end if image.valid? yield image else logger.info "Skipping image analysis because ImageMagick doesn't support the file" {} end rescue MiniMagick::Error => error logger.error "Skipping image analysis due to an ImageMagick error: #{error.message}" {} end end
rotated_image?(image)
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# File lib/active_storage/analyzer/image_analyzer/image_magick.rb, line 37 def rotated_image?(image) %w[ RightTop LeftBottom TopRight BottomLeft ].include?(image["%[orientation]"]) end