module Commandline

Public Instance Methods

capture_output(io, silent: true) click to toggle source

# File lib/utils/commandline.rb, line 8
def capture_output(io, silent: true)
  StringIO.new.tap do |store|
    Thread.new do
      while (line = io.getc)
        store.write(line.dup)
        print line unless silent || ENV['SILENT']
      end
    end
  end
end

execute(*commands, fail_message:, pass_message:) click to toggle source

TODO: - think about how to bring the run and execute methods together or give more differentiating names

# File lib/utils/commandline.rb, line 34
def execute(*commands, fail_message:, pass_message:)
  fail = false
  commands.each do |command|
    result = run command
    say result.stdout
    next unless result.error?

    fail = true
    say result.stderr
    say error fail_message
  end
  say ok pass_message unless fail
end

run(command, dir: nil, silent: true) click to toggle source

# File lib/utils/commandline.rb, line 19
def run(command, dir: nil, silent: true)
  options = {}
  options[:chdir] = dir if dir
  stdin, stdout, stderr, thread = Open3.popen3("bash -lc '#{command}'", options)
  stderr_output = capture_output(stderr, silent: silent)
  stdout_output = capture_output(stdout, silent: silent)

  wait_for_thread(thread)

  [stdin, stdout, stderr].each(&:close)

  Return.new(stdout: stdout_output.string, stderr: stderr_output.string, exit_code: thread.value.exitstatus)
end

Private Instance Methods

wait_for_thread(thread) click to toggle source

# File lib/utils/commandline.rb, line 50
def wait_for_thread(thread)
  sleep 1 while thread.alive?
end