97 lines
2.3 KiB
Ruby
97 lines
2.3 KiB
Ruby
# typed: true
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# frozen_string_literal: true
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# Represention of a `*PATH` environment variable.
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#
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# @api private
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class PATH
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extend T::Sig
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include Enumerable
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extend Forwardable
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delegate each: :@paths
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# FIXME: Enable cop again when https://github.com/sorbet/sorbet/issues/3532 is fixed.
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# rubocop:disable Style/MutableConstant
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Element = T.type_alias { T.nilable(T.any(Pathname, String, PATH)) }
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private_constant :Element
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Elements = T.type_alias { T.any(Element, T::Array[Element]) }
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private_constant :Elements
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# rubocop:enable Style/MutableConstant
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sig { params(paths: Elements).void }
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def initialize(*paths)
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@paths = parse(paths)
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end
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sig { params(paths: Elements).returns(T.self_type) }
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def prepend(*paths)
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@paths = parse(paths + @paths)
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self
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end
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sig { params(paths: Elements).returns(T.self_type) }
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def append(*paths)
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@paths = parse(@paths + paths)
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self
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end
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sig { params(index: Integer, paths: Elements).returns(T.self_type) }
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def insert(index, *paths)
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@paths = parse(@paths.insert(index, *paths))
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self
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end
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sig { params(block: T.proc.params(arg0: String).returns(T::Boolean)).returns(T.self_type) }
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def select(&block)
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self.class.new(@paths.select(&block))
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end
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sig { params(block: T.proc.params(arg0: String).returns(T::Boolean)).returns(T.self_type) }
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def reject(&block)
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self.class.new(@paths.reject(&block))
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end
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sig { returns(T::Array[String]) }
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def to_ary
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@paths.dup.to_ary
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end
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alias to_a to_ary
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sig { returns(String) }
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def to_str
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@paths.join(File::PATH_SEPARATOR)
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end
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alias to_s to_str
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sig { params(other: T.untyped).returns(T::Boolean) }
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def ==(other)
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(other.respond_to?(:to_ary) && to_ary == other.to_ary) ||
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(other.respond_to?(:to_str) && to_str == other.to_str) ||
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false
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end
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sig { returns(T::Boolean) }
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def empty?
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@paths.empty?
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end
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sig { returns(T.nilable(T.self_type)) }
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def existing
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existing_path = select(&File.method(:directory?))
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# return nil instead of empty PATH, to unset environment variables
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existing_path unless existing_path.empty?
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end
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private
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sig { params(paths: T::Array[Elements]).returns(T::Array[String]) }
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def parse(paths)
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paths.flatten
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.compact
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.flat_map { |p| Pathname(p).to_path.split(File::PATH_SEPARATOR) }
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.uniq
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end
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end
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