Class: Tootsie::CommandRunner

Inherits:
Object
  • Object
show all
Defined in:
lib/tootsie/command_runner.rb

Instance Method Summary collapse

Constructor Details

#initialize(command_line, options = {}) ⇒ CommandRunner

Returns a new instance of CommandRunner.



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# File 'lib/tootsie/command_runner.rb', line 7

def initialize(command_line, options = {})
  @options = options.symbolize_keys
  @options.assert_valid_keys(:ignore_exit_code, :output_encoding)
  @command_line = command_line
  @logger = Application.get.logger
end

Instance Method Details

#run(params = {}, &block) ⇒ Object 



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# File 'lib/tootsie/command_runner.rb', line 14

def run(params = {}, &block)
  command_line = @command_line
  if params.any?
    params = params.with_indifferent_access
    command_line = command_line.gsub(/(^|\s):(\w+)/) do
      pre, key, all = $1, $2, $~[0]
      if params.include?(key)
        value = params[key]
        value = "'#{value}'" if value =~ /\s/
        "#{pre}#{value}"
      else
        all
      end
    end
  end
  command_line = "#{command_line} 2>&1"

  @logger.info("Running command: #{command_line}") if @logger.info?
  IO.popen(command_line, "r:#{@options[:output_encoding] || 'utf-8'}") do |output|
    output.each_line do |line|
      @logger.info("[Command output] #{line.strip}") if @logger.info?
      yield line if block_given?
    end
  end
  status = $?
  if status.exited?
    if status.exitstatus != 0
      if @options[:ignore_exit_code]
        return false
      else
        raise CommandExecutionFailed, "Command failed with exit code #{status.exitstatus}: #{command_line}"
      end
    end
  elsif status.stopped?
    raise CommandExecutionFailed, "Command stopped unexpectedly with signal #{status.stopsig}: #{command_line}"
  elsif status.signaled?
    raise CommandExecutionFailed, "Command died unexpectedly by signal #{status.termsig}: #{command_line}"
  else
    raise CommandExecutionFailed, "Command died unexpectedly: #{command_line}"
  end
  true
end