Class: Win32::Console::ANSI::IO

Inherits:
IO
  • Object
show all
Includes:
Constants
Defined in:
lib/Win32/Console/ANSI.rb

Constant Summary collapse

VERSION = 
'0.05'
DEBUG = 
nil
FD_STD_MAP = 
{
  :stdout => [1, STD_OUTPUT_HANDLE],
  :stderr => [2, STD_ERROR_HANDLE]
}
EncodeOk =

@todo: encode is another perl module

false
OEM = 
Win32::Console::OutputCP()
@@cp = 
cpANSI + cpOEM
@@color =

black foreground

{ 30 => 0,                                               # black foreground

      31 => FOREGROUND_RED,                                  # red foreground

      32 => FOREGROUND_GREEN,                                # green foreground

      33 => FOREGROUND_RED|FOREGROUND_GREEN,                 # yellow foreground

      34 => FOREGROUND_BLUE,                                 # blue foreground

      35 => FOREGROUND_BLUE|FOREGROUND_RED,                  # magenta foreground

      36 => FOREGROUND_BLUE|FOREGROUND_GREEN,                # cyan foreground

      37 => FOREGROUND_RED|FOREGROUND_GREEN|FOREGROUND_BLUE, # white foreground

      40 => 0,                                               # black background

      41 => BACKGROUND_RED,                                  # red background

      42 => BACKGROUND_GREEN,                                # green background

      43 => BACKGROUND_RED|BACKGROUND_GREEN,                 # yellow background

      44 => BACKGROUND_BLUE,                                 # blue background

      45 => BACKGROUND_BLUE|BACKGROUND_RED,                  # magenta background

      46 => BACKGROUND_BLUE|BACKGROUND_GREEN,                # cyan background

      47 => BACKGROUND_RED|BACKGROUND_GREEN|BACKGROUND_BLUE, # white background

}

Constants included from Constants

Constants::BACKGROUND_BLUE, Constants::BACKGROUND_GREEN, Constants::BACKGROUND_INTENSITY, Constants::BACKGROUND_RED, Constants::CAPSLOCK_ON, Constants::CONSOLE_TEXTMODE_BUFFER, Constants::CTRL_BREAK_EVENT, Constants::CTRL_CLOSE_EVENT, Constants::CTRL_C_EVENT, Constants::CTRL_LOGOFF_EVENT, Constants::CTRL_SHUTDOWN_EVENT, Constants::DOUBLE_CLICK, Constants::ENABLE_ECHO_INPUT, Constants::ENABLE_LINE_INPUT, Constants::ENABLE_MOUSE_INPUT, Constants::ENABLE_PROCESSED_INPUT, Constants::ENABLE_PROCESSED_OUTPUT, Constants::ENABLE_WINDOW_INPUT, Constants::ENABLE_WRAP_AT_EOL_OUTPUT, Constants::ENHANCED_KEY, Constants::FILE_SHARE_READ, Constants::FILE_SHARE_WRITE, Constants::FOCUS_EVENT, Constants::FOREGROUND_BLUE, Constants::FOREGROUND_GREEN, Constants::FOREGROUND_INTENSITY, Constants::FOREGROUND_RED, Constants::FROM_LEFT_1ST_BUTTON_PRESSED, Constants::FROM_LEFT_2ND_BUTTON_PRESSED, Constants::FROM_LEFT_3RD_BUTTON_PRESSED, Constants::FROM_LEFT_4TH_BUTTON_PRESSED, Constants::GENERIC_READ, Constants::GENERIC_WRITE, Constants::INVALID_HANDLE_VALUE, Constants::KEY_EVENT, Constants::LEFT_ALT_PRESSED, Constants::LEFT_CTRL_PRESSED, Constants::MENU_EVENT, Constants::MOUSE_EVENT, Constants::MOUSE_MOVED, Constants::MOUSE_WHEELED, Constants::NUMLOCK_ON, Constants::RIGHTMOST_BUTTON_PRESSED, Constants::RIGHT_ALT_PRESSED, Constants::RIGHT_CTRL_PRESSED, Constants::SCROLLLOCK_ON, Constants::SHIFT_PRESSED, Constants::STD_ERROR_HANDLE, Constants::STD_INPUT_HANDLE, Constants::STD_OUTPUT_HANDLE, Constants::WINDOW_BUFFER_SIZE_EVENT

Instance Method Summary collapse

Constructor Details

#initialize(fd_std = :stdout) ⇒ IO

Returns a new instance of IO.



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# File 'lib/Win32/Console/ANSI.rb', line 85

def initialize(fd_std = :stdout)
  fd, handle = FD_STD_MAP[fd_std]
  super(fd, 'w')
  @Out = Win32::Console.new(handle)
  @x = @y = 0           # to save cursor position


  # None of these calls will work, when we are redirected

  unless redirected?
    @default_foreground = @Out.DefaultForeground
    @default_background = @Out.DefaultBackground
    @default_bold       = @Out.DefaultBold
    @default_underline  = @Out.DefaultUnderline
  end

  @foreground = @default_foreground
  @background = @default_background
  @bold       = @default_bold
  @underline  = @default_underline
  @revideo =
  @concealed = nil
  @conv = 1        # char conversion by default

  @buffer = []
  STDERR.puts "Console Mode=#{@Out.Mode}" if DEBUG
end

Instance Method Details

#putc(int) ⇒ Object

this redefined #putc buffers escape sequences but passes other values to #write as normal.



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# File 'lib/Win32/Console/ANSI.rb', line 112

def putc(int)
  int = int.ord if RUBY_VERSION >= "1.9"
  if @buffer.empty?
    # match \e

    unless int == 27
      write(int.chr)
    else
      @buffer << int
    end
  else
    @buffer << int
    case int
    # match m, J, L, M, @, P, A, B, C, D, E, F, G, H, f, s, u, U, K, X

    when 109, 74, 76, 77, 64, 80, 65, 66, 67, 68, 
          69, 70, 71, 72, 102, 115, 117, 85, 75, 88
      write(@buffer.pack("c*"))
      @buffer.clear
    end
  end
end

#redirected? ⇒ Boolean

Returns true if output is being redirected to something other then a terminal.

For now just checks the status of Win32::Console#redirected?

Returns:

  • (Boolean) 


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# File 'lib/Win32/Console/ANSI.rb', line 154

def redirected?
  @Out.redirected?
end

#write(*s) ⇒ Object

#write checks if $stdout is going to the console or if it’s being redirected. When to the console, it passes the string to _PrintString to be parsed for escape codes.

When redirected, it passes to WriteFile to allow escape codes and all to be output. The application that is handling the redirected IO should handle coloring. For Ruby applications, this means requiring Win32Conole again.



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# File 'lib/Win32/Console/ANSI.rb', line 142

def write(*s)
  if redirected?
    s.each{ |x| @Out.WriteFile(x.dup.to_s) }
  else
    s.each{ |x| _PrintString(x) }
  end
end