Class: CaptureIO

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

Constant Summary collapse

VERSION = 
'0.1.1'

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ CaptureIO

Returns a new instance of CaptureIO.



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# File 'lib/capture_io.rb', line 8

def initialize
   unless File.directory?('io_redirect')
     FileUtils.mkdir 'io_redirect'
   end

   base = "#{__FILE__}".gsub("#{File.dirname(__FILE__)}/", "")
   
   @stdout_file = "io_redirect/#{Time.to_md5}_#{base}_stdout"
   @stderr_file = "io_redirect/#{Time.to_md5}_#{base}_stderr"
   @stdout_fd = File.open(@stdout_file, 'w+')
   @stderr_fd = File.open(@stderr_file, 'w+')
end

Instance Attribute Details

#stderr_file ⇒ Object (readonly)

Returns the value of attribute stderr_file.



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# File 'lib/capture_io.rb', line 7

def stderr_file
  @stderr_file
end

#stdout_file ⇒ Object (readonly)

Returns the value of attribute stdout_file.



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# File 'lib/capture_io.rb', line 7

def stdout_file
  @stdout_file
end

Instance Method Details

#start ⇒ Object 



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# File 'lib/capture_io.rb', line 21

def start
  begin
    @orig_stdout = $stdout
    @orig_stderr = $stderr
    
    @new_stdout = IO.new(@stdout_fd.fileno, 'w+')
    @new_stderr = IO.new(@stderr_fd.fileno, 'w+')
    
    $stdout = @new_stdout
    $stderr = @new_stderr
  rescue => e
    p e
  end
end

#stop(delete_tmp = true) ⇒ Object 



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# File 'lib/capture_io.rb', line 35

def stop(delete_tmp=true)
  stdout_content, stderr_content = ''
  begin
    @new_stdout.flush
  rescue => e
  end
  begin
    @new_stderr.flush
  rescue => e
  end
  begin 
    $stdout = @orig_stdout   
  rescue => e
  end
  begin 
    $stderr = @orig_stderr
  rescue => e
  end
    
  begin 
    stdout_content = File.readlines(@stdout_file)
    stderr_content = File.readlines(@stderr_file)     
   @new_stdout.close
   @new_stderr.close
   FileUtils.rm_rf 'io_redirect' if delete_tmp
  rescue => e
  end
  
  {:stdout => stdout_content, :stderr => stderr_content }       
end