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|
module Hbc
module CaskLoader
class FromContentLoader
def initialize(content)
@content = content
end
def load
instance_eval(@content.force_encoding("UTF-8"), __FILE__, __LINE__)
end
private
def cask(header_token, &block)
Cask.new(header_token, &block)
end
end
class FromPathLoader < FromContentLoader
def self.can_load?(ref)
path = Pathname.new(ref)
path.extname == ".rb" && path.expand_path.exist?
end
attr_reader :token, :path
def initialize(path)
path = Pathname.new(path).expand_path
@token = path.basename(".rb").to_s
@path = path
end
def load
raise CaskError, "'#{@path}' does not exist." unless @path.exist?
raise CaskError, "'#{@path}' is not readable." unless @path.readable?
raise CaskError, "'#{@path}' is not a file." unless @path.file?
@content = IO.read(@path)
super
end
private
def cask(header_token, &block)
if @token != header_token
raise CaskTokenDoesNotMatchError.new(@token, header_token)
end
Cask.new(header_token, sourcefile_path: @path, &block)
end
end
class FromURILoader < FromPathLoader
def self.can_load?(ref)
!(ref.to_s !~ ::URI.regexp)
end
def initialize(url)
@url = url
uri = URI(url)
super Hbc.cache/File.basename(uri.path)
end
def load
Hbc.cache.mkpath
FileUtils.rm_f @path
begin
ohai "Downloading #{@url}."
curl @url, "-o", @path
rescue ErrorDuringExecution
raise CaskUnavailableError, @url
end
super
end
end
class FromTapLoader < FromPathLoader
def self.can_load?(ref)
!(ref.to_s !~ HOMEBREW_TAP_CASK_REGEX)
end
def initialize(tapped_name)
user, repo, token = tapped_name.split("/", 3).map(&:downcase)
@tap = Tap.fetch(user, repo)
super @tap.cask_dir/"#{token}.rb"
end
def load
@tap.install unless @tap.installed?
super
end
end
class NullLoader < FromPathLoader
def self.can_load?(*)
true
end
def initialize(ref)
@token = File.basename(ref, ".rb")
super CaskLoader.default_path(@token)
end
def load
raise CaskUnavailableError, @token
end
end
def self.load_from_file(path)
FromPathLoader.new(path).load
end
def self.load_from_string(content)
FromContentLoader.new(content).load
end
def self.path(ref)
self.for(ref).path
end
def self.load(ref)
self.for(ref).load
end
def self.for(ref)
[
FromURILoader,
FromTapLoader,
FromPathLoader,
].each do |loader_class|
return loader_class.new(ref) if loader_class.can_load?(ref)
end
if FromPathLoader.can_load?(default_path(ref))
return FromPathLoader.new(default_path(ref))
end
possible_tap_casks = tap_paths(ref)
if possible_tap_casks.count == 1
possible_tap_cask = possible_tap_casks.first
return FromPathLoader.new(possible_tap_cask)
end
possible_installed_cask = Cask.new(ref)
if possible_installed_cask.installed?
return FromPathLoader.new(possible_installed_cask.installed_caskfile)
end
NullLoader.new(ref)
end
def self.default_path(token)
Hbc.default_tap.cask_dir/"#{token.to_s.downcase}.rb"
end
def self.tap_paths(token)
Tap.map { |t| t.cask_dir/"#{token.to_s.downcase}.rb" }
.select(&:exist?)
end
end
end
|
