method

bin_path

v1_9_3_392 - Show latest stable - Class: Gem

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.

# File lib/rubygems.rb, line 297
  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?

    specs = Gem::Dependency.new(name, requirements).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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