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module Paperclip
# Paperclip processors allow you to modify attached files when they are
# attached in any way you are able. Paperclip itself uses command-line
# programs for its included Thumbnail processor, but custom processors
# are not required to follow suit.
#
# Processors are required to be defined inside the Paperclip module and
# are also required to be a subclass of Paperclip::Processor. There is
# only one method you *must* implement to properly be a subclass:
# #make, but #initialize may also be of use. Both methods accept 3
# arguments: the file that will be operated on (which is an instance of
# File), a hash of options that were defined in has_attached_file's
# style hash, and the Paperclip::Attachment itself.
#
# All #make needs to return is an instance of File (Tempfile is
# acceptable) which contains the results of the processing.
#
# See Paperclip.run for more information about using command-line
# utilities from within Processors.
class Processor
attr_accessor :file, :options, :attachment
def initialize file, options = {}, attachment = nil
@file = file
@options = options
@attachment = attachment
end
def make
end
def self.make file, options = {}, attachment = nil
new(file, options, attachment).make
end
end
# Due to how ImageMagick handles its image format conversion and how Tempfile
# handles its naming scheme, it is necessary to override how Tempfile makes
# its names so as to allow for file extensions. Idea taken from the comments
# on this blog post:
# http://marsorange.com/archives/of-mogrify-ruby-tempfile-dynamic-class-definitions
class Tempfile < ::Tempfile
# Replaces Tempfile's +make_tmpname+ with one that honors file extensions.
def make_tmpname(basename, n)
extension = File.extname(basename)
sprintf("%s,%d,%d%s", File.basename(basename, extension), $$, n, extension)
end
end
end
Version data entries
13 entries across 13 versions & 4 rubygems