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87 lines (77 loc) · 2.04 KB
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require 'tempfile'
require 'subexec'
require 'stringio'
require 'pathname'
require 'shellwords'
require 'mini_magick/command_builder'
require 'mini_magick/errors'
require 'mini_magick/image'
require 'mini_magick/utilities'
module MiniMagick
@validate_on_create = true
@validate_on_write = true
class << self
attr_accessor :processor
attr_accessor :processor_path
attr_accessor :timeout
attr_accessor :validate_on_create
attr_accessor :validate_on_write
##
# Tries to detect the current processor based if any of the processors exist.
# Mogrify have precedence over gm by default.
#
# === Returns
# * [String] The detected procesor
def choose_processor
self.processor = if MiniMagick::Utilities.which('mogrify')
"mogrify"
elsif MiniMagick::Utilities.which('gm')
"gm"
else
nil
end
end
##
# Discovers the imagemagick version based on mogrify's output.
#
# === Returns
# * The imagemagick version
def image_magick_version
@@version ||= Gem::Version.create(`mogrify --version`.split(" ")[2].split("-").first)
end
##
# The minimum allowed imagemagick version
#
# === Returns
# * The minimum imagemagick version
def minimum_image_magick_version
@@minimum_version ||= Gem::Version.create("6.6.3")
end
##
# Checks whether the imagemagick's version is valid
#
# === Returns
# * [Boolean]
def valid_version_installed?
image_magick_version >= minimum_image_magick_version
end
##
# Picks the right processor if it isn't set and returns whether it's mogrify or not.
#
# === Returns
# * [Boolean]
def mogrify?
self.choose_processor if self.processor.nil?
self.processor == 'mogrify'
end
##
# Picks the right processor if it isn't set and returns whether it's graphicsmagick or not.
#
# === Returns
# * [Boolean]
def gm?
self.choose_processor if self.processor.nil?
self.processor == 'gm'
end
end
end