Class: Cocaine::CommandLine

Inherits:

Object

• Object
• Cocaine::CommandLine

show all

Defined in:

lib/cocaine/command_line.rb

Class Attribute Summary (collapse)

• + (Object) path

  Returns the value of attribute path.

Instance Method Summary (collapse)

• - (Object) command
• - (CommandLine) initialize(binary, params = "", options = {}) constructor

  A new instance of CommandLine.

• - (Object) run

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# File 'lib/cocaine/command_line.rb', line 7

def initialize(binary, params = "", options = {})
  @binary            = binary.dup
  @params            = params.dup
  @options           = options.dup
  @swallow_stderr    = @options.delete(:swallow_stderr)
  @expected_outcodes = @options.delete(:expected_outcodes)
  @expected_outcodes ||= [0]
end

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# File 'lib/cocaine/command_line.rb', line 4

def path
  @path
end

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# File 'lib/cocaine/command_line.rb', line 16

def command
  cmd = []
  cmd << @binary
  cmd << interpolate(@params, @options)
  cmd << bit_bucket if @swallow_stderr
  cmd.join(" ").strip
end

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# File 'lib/cocaine/command_line.rb', line 24

def run
  output = ''
  begin
    with_modified_path do
      output = self.class.send(:`', command)
    end
  rescue Errno::ENOENT
    raise Cocaine::CommandNotFoundError
  end
  if $?.exitstatus == 127
    raise Cocaine::CommandNotFoundError
  end
  unless @expected_outcodes.include?($?.exitstatus)
    raise Cocaine::ExitStatusError, "Command '#{command}' returned #{$?.exitstatus}. Expected #{@expected_outcodes.join(", ")}"
  end
  output
end