Class: Printer

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

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(stdout = STDOUT, stderr = STDERR, stdin = STDIN) ⇒ Printer

Returns a new instance of Printer.



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# File 'lib/printer.rb', line 6

def initialize(stdout=STDOUT, stderr=STDERR, stdin=STDIN)
  @stdout, @stderr, @stdin = stdout, stderr, stdin
end

Instance Attribute Details

#stderr ⇒ Object (readonly)

Returns the value of attribute stderr.



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# File 'lib/printer.rb', line 3

def stderr
  @stderr
end

#stdin ⇒ Object (readonly)

Returns the value of attribute stdin.



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# File 'lib/printer.rb', line 4

def stdin
  @stdin
end

#stdout ⇒ Object (readonly)

Returns the value of attribute stdout.



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# File 'lib/printer.rb', line 2

def stdout
  @stdout
end

Instance Method Details

#color(string, *colors) ⇒ Object 



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# File 'lib/printer.rb', line 41

def color(string, *colors)
  if color?
    highline.color(string, *colors)
  else
    string
  end
end

#color? ⇒ Boolean

Should colored output be used? Only on TTY

Returns:

  • (Boolean) 


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# File 'lib/printer.rb', line 50

def color?
  true
end

#error(message) ⇒ Object

Print an error message



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# File 'lib/printer.rb', line 32

def error(message)
  msg("#{color('ERROR:', :red, :bold)} #{message}")
end

#fatal(message) ⇒ Object

Print a message describing a fatal error.



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# File 'lib/printer.rb', line 37

def fatal(message)
  msg("#{color('FATAL:', :red, :bold)} #{message}")
end

#highline ⇒ Object 



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# File 'lib/printer.rb', line 10

def highline
  @highline ||= begin
    require 'highline'
    HighLine.new
  end
end

#msg(message) ⇒ Object Also known as: info

Prints a message to stdout. Aliased as info for compatibility with the logger API.



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# File 'lib/printer.rb', line 19

def msg(message)
  stdout.puts message
  stdout.flush
end

#warn(message) ⇒ Object

Print a warning message



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# File 'lib/printer.rb', line 27

def warn(message)
  msg("#{color('WARNING:', :yellow, :bold)} #{message}")
end