method

bin_path

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bin_path(name, exec_name = nil, *requirements) public

Find the full path to the executable for gem name. If the exec_name is not given, the gem’s default_executable is chosen, otherwise the specified executable’s path is returned. requirements allows you to specify specific gem versions.

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# File lib/rubygems.rb, line 226
  def self.bin_path(name, exec_name = nil, *requirements)
    # TODO: fails test_self_bin_path_bin_file_gone_in_latest
    # Gem::Specification.find_by_name(name, *requirements).bin_file exec_name

    raise ArgumentError, "you must supply exec_name" unless exec_name

    requirements = Gem::Requirement.default if
      requirements.empty?

    dep = Gem::Dependency.new name, requirements

    loaded = Gem.loaded_specs[name]

    return loaded.bin_file exec_name if loaded && dep.matches_spec?(loaded)

    specs = dep.matching_specs(true)

    raise Gem::GemNotFoundException,
          "can't find gem #{name} (#{requirements})" if specs.empty?

    specs = specs.find_all { |spec|
      spec.executables.include? exec_name
    } if exec_name

    unless spec = specs.last
      msg = "can't find gem #{name} (#{requirements}) with executable #{exec_name}"
      raise Gem::GemNotFoundException, msg
    end

    spec.bin_file exec_name
  end

bin_path

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