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Contents
class Shrine
module Plugins
# Custom kithe logic for determining mime type, using the shrine mime_type plugin.
#
# We start out using the `marcel` analyzer.
# Marcel analyzer is pure-ruby and fast. It's from Basecamp and is what
# ActiveStorage uses. It is very similar to :mimemagic (and uses mimemagic
# under the hood), but mimemagic seems not to be maintained with up to date
# magic db? https://github.com/minad/mimemagic/pull/66
#
# But marcel is not able to catch some of our MP3s as audio/mpeg. The
# `mediainfo` CLI is, and is one of the tools Harvard FITS uses.
# If marcel came up blank, AND we are configured to use mediainfo CLI
# (which by default we will be if it's available), we will try
# shelling out to mediainfo command line.
#
# https://github.com/MediaArea/MediaInfo
#
# Ensure that if mime-type can't be otherwise determined, it is assigned
# "application/octet-stream", basically the type for generic binary.
class KitheDetermineMimeType
# marcel version 1.0 says audio/x-flac, whereas previous versions
# said audio/flac, which we prefer. Let's fix it.
RPELACE_CONTENT_TYPES = {
"audio/x-flac" => "audio/flac"
}
def self.load_dependencies(uploader, *)
uploader.plugin :determine_mime_type, analyzer: -> (io, analyzers) do
mime_type = analyzers[:marcel].call(io)
if Kithe.use_mediainfo && mime_type == "application/octet-stream" || mime_type.blank?
mime_type = Kithe::MediainfoAnalyzer.new.call(io)
end
mime_type = "application/octet-stream" if mime_type.blank?
# Are there any we prefer an alternate spelling of?
mime_type = RPELACE_CONTENT_TYPES.fetch(mime_type, mime_type)
mime_type
end
end
end
register_plugin(:kithe_determine_mime_type, KitheDetermineMimeType)
end
end
Version data entries
20 entries across 20 versions & 1 rubygems