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symlinked.rb
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symlinked.rb
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# typed: false
# frozen_string_literal: true
require "cask/artifact/relocated"
module Cask
module Artifact
# Superclass for all artifacts which are installed by symlinking them to the target location.
#
# @api private
class Symlinked < Relocated
def self.link_type_english_name
"Symlink"
end
def self.english_description
"#{english_name} #{link_type_english_name}s"
end
def install_phase(**options)
link(**options)
end
def uninstall_phase(**options)
unlink(**options)
end
def summarize_installed
if target.symlink? && target.exist? && target.readlink.exist?
"#{printable_target} -> #{target.readlink} (#{target.readlink.abv})"
else
string = if target.symlink?
"#{printable_target} -> #{target.readlink}"
else
printable_target
end
Formatter.error(string, label: "Broken Link")
end
end
private
def link(force: false, **options)
unless source.exist?
raise CaskError,
"It seems the #{self.class.link_type_english_name.downcase} " \
"source '#{source}' is not there."
end
if target.exist?
message = "It seems there is already #{self.class.english_article} " \
"#{self.class.english_name} at '#{target}'"
if force && target.symlink? && \
(target.realpath == source.realpath || target.realpath.to_s.start_with?("#{cask.caskroom_path}/"))
opoo "#{message}; overwriting."
target.delete
else
raise CaskError, "#{message}."
end
end
ohai "Linking #{self.class.english_name} '#{source.basename}' to '#{target}'."
create_filesystem_link(**options)
end
def unlink(**)
return unless target.symlink?
ohai "Unlinking #{self.class.english_name} '#{target}'."
target.delete
end
def create_filesystem_link(command: nil, **_)
target.dirname.mkpath
command.run!("/bin/ln", args: ["-h", "-f", "-s", "--", source, target])
add_altname_metadata(source, target.basename, command: command)
end
end
end
end