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|
require 'forwardable'
require 'resource'
require 'checksum'
require 'version'
require 'build_options'
require 'dependency_collector'
class SoftwareSpec
extend Forwardable
attr_reader :name
attr_reader :build, :resources, :owner
attr_reader :dependency_collector
def_delegators :@resource, :stage, :fetch
def_delegators :@resource, :download_strategy, :verify_download_integrity
def_delegators :@resource, :checksum, :mirrors, :specs, :using, :downloader
def_delegators :@resource, :version, :mirror, *Checksum::TYPES
def initialize
@resource = Resource.new
@resources = {}
@build = BuildOptions.new(ARGV.options_only)
@dependency_collector = DependencyCollector.new
end
def owner= owner
@name = owner.name
@resource.owner = self
resources.each_value { |r| r.owner = self }
end
def url val=nil, specs={}
return @resource.url if val.nil?
@resource.url(val, specs)
dependency_collector.add(@resource)
end
def resource? name
resources.has_key?(name)
end
def resource name, &block
if block_given?
raise DuplicateResourceError.new(name) if resource?(name)
resources[name] = Resource.new(name, &block)
else
resources.fetch(name) { raise ResourceMissingError.new(owner, name) }
end
end
def option name, description=nil
name = name.to_s if Symbol === name
raise "Option name is required." if name.empty?
raise "Options should not start with dashes." if name[0, 1] == "-"
build.add(name, description)
end
def depends_on spec
dep = dependency_collector.add(spec)
build.add_dep_option(dep) if dep
end
def deps
dependency_collector.deps
end
def requirements
dependency_collector.requirements
end
end
class HeadSoftwareSpec < SoftwareSpec
def initialize
super
@resource.version = Version.new('HEAD')
end
def verify_download_integrity fn
return
end
end
class Bottle < SoftwareSpec
attr_rw :root_url, :prefix, :cellar, :revision
def_delegators :@resource, :version=, :url=
def initialize
super
@revision = 0
@prefix = '/usr/local'
@cellar = '/usr/local/Cellar'
end
# Checksum methods in the DSL's bottle block optionally take
# a Hash, which indicates the platform the checksum applies on.
Checksum::TYPES.each do |cksum|
class_eval <<-EOS, __FILE__, __LINE__ + 1
def #{cksum}(val=nil)
return @#{cksum} if val.nil?
@#{cksum} ||= Hash.new
case val
when Hash
key, value = val.shift
@#{cksum}[value] = Checksum.new(:#{cksum}, key)
end
if @#{cksum}.has_key? bottle_tag
@resource.checksum = @#{cksum}[bottle_tag]
end
end
EOS
end
def checksums
checksums = {}
Checksum::TYPES.each do |checksum_type|
checksum_os_versions = send checksum_type
next unless checksum_os_versions
os_versions = checksum_os_versions.keys
os_versions.map! {|osx| MacOS::Version.from_symbol osx }
os_versions.sort.reverse.each do |os_version|
osx = os_version.to_sym
checksum = checksum_os_versions[osx]
checksums[checksum_type] ||= []
checksums[checksum_type] << { checksum => osx }
end
end
checksums
end
end
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