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require "set"
class Option
attr_reader :name, :description, :flag
def initialize(name, description = "")
@name = name
@flag = "--#{name}"
@description = description
end
def to_s
flag
end
def <=>(other)
return unless other.is_a?(Option)
name <=> other.name
end
def ==(other)
instance_of?(other.class) && name == other.name
end
alias_method :eql?, :==
def hash
name.hash
end
def inspect
"#<#{self.class.name}: #{flag.inspect}>"
end
end
class DeprecatedOption
attr_reader :old, :current
def initialize(old, current)
@old = old
@current = current
end
def old_flag
"--#{old}"
end
def current_flag
"--#{current}"
end
def ==(other)
instance_of?(other.class) && old == other.old && current == other.current
end
alias_method :eql?, :==
end
class Options
include Enumerable
def self.create(array)
new array.map { |e| Option.new(e[/^--([^=]+=?)(.+)?$/, 1] || e) }
end
def initialize(*args)
@options = Set.new(*args)
end
def each(*args, &block)
@options.each(*args, &block)
end
def <<(o)
@options << o
self
end
def +(o)
self.class.new(@options + o)
end
def -(o)
self.class.new(@options - o)
end
def &(o)
self.class.new(@options & o)
end
def |(o)
self.class.new(@options | o)
end
def *(arg)
@options.to_a * arg
end
def empty?
@options.empty?
end
def as_flags
map(&:flag)
end
def include?(o)
any? { |opt| opt == o || opt.name == o || opt.flag == o }
end
alias_method :to_ary, :to_a
def inspect
"#<#{self.class.name}: #{to_a.inspect}>"
end
end
module Homebrew
def dump_options_for_formula(f)
f.options.sort_by(&:flag).each do |opt|
puts "#{opt.flag}\n\t#{opt.description}"
end
puts "--devel\n\tInstall development version #{f.devel.version}" if f.devel
puts "--HEAD\n\tInstall HEAD version" if f.head
end
end
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