Module: Which

Included in:
LaunchAgentManagementInstanceMethods
Defined in:
lib/kanseishitsu/which.rb

Overview

Define module Which

Instance Method Summary collapse

Instance Method Details

#executable?(exe) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/kanseishitsu/which.rb', line 22

def executable?(exe)
  !exe.empty? && File.executable?(exe) && !File.directory?(exe)
end

#explicit_which(cmd) ⇒ Object 



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# File 'lib/kanseishitsu/which.rb', line 26

def explicit_which(cmd)
  exe = `which #{cmd}`.chomp
  executable?(exe) ? exe : nil
rescue Errno::ENOENT => _e
  nil
end

#find_executable_in_path(cmd) ⇒ Object

Find the full path to a given executable in the PATH system environment variable



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# File 'lib/kanseishitsu/which.rb', line 13

def find_executable_in_path(cmd)
  return if cmd.nil?

  directory = ENV['PATH'].split(File::PATH_SEPARATOR).find do |dir|
    File.executable?(File.join(dir, cmd))
  end
  directory.nil? ? nil : File.join(directory, cmd)
end

#portable_which(cmd) ⇒ Object Also known as: which 



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# File 'lib/kanseishitsu/which.rb', line 33

def portable_which(cmd)
  explicit_which(cmd) || find_executable_in_path(cmd)
end