Module: Reline::Terminfo

Extended by:
Fiddle::Importer
Defined in:
lib/reline/terminfo.rb,
lib/reline/terminfo.rb,
lib/reline/terminfo.rb

Defined Under Namespace

Classes: StringWithTiparm, TerminfoError

Class Method Summary collapse

Class Method Details

.curses_dl ⇒ Object 



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# File 'lib/reline/terminfo.rb', line 32

def self.curses_dl
  return @curses_dl unless @curses_dl == false
  if Fiddle.const_defined?(:TYPE_VARIADIC)
    curses_dl_files.each do |curses_name|
      result = Fiddle::Handle.new(curses_name)
    rescue Fiddle::DLError
      next
    else
      @curses_dl = result
      break
    end
  end
  @curses_dl = nil if @curses_dl == false
  @curses_dl
end

.curses_dl_files ⇒ Object 



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# File 'lib/reline/terminfo.rb', line 17

def self.curses_dl_files
  case RUBY_PLATFORM
  when /mingw/, /mswin/
    # aren't supported
    []
  when /cygwin/
    %w[cygncursesw-10.dll cygncurses-10.dll]
  when /darwin/
    %w[libncursesw.dylib libcursesw.dylib libncurses.dylib libcurses.dylib]
  else
    %w[libncursesw.so libcursesw.so libncurses.so libcurses.so]
  end
end

.enabled? ⇒ Boolean

NOTE: This means Fiddle and curses are enabled.

Returns:

  • (Boolean) 


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# File 'lib/reline/terminfo.rb', line 140

def self.enabled?
  true
end

.setupterm(term, fildes) ⇒ Object 



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# File 'lib/reline/terminfo.rb', line 80

def self.setupterm(term, fildes)
  errret_int = Fiddle::Pointer.malloc(Fiddle::SIZEOF_INT)
  ret = @setupterm.(term, fildes, errret_int)
  case ret
  when 0 # OK
    @term_supported = true
  when -1 # ERR
    @term_supported = false
  end
end

.term_supported? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/reline/terminfo.rb', line 144

def self.term_supported?
  @term_supported
end

.tigetflag(capname) ⇒ Object

Raises:



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# File 'lib/reline/terminfo.rb', line 115

def self.tigetflag(capname)
  raise TerminfoError, "capname is not String: #{capname.inspect}" unless capname.is_a?(String)
  flag = @tigetflag.(capname).to_i
  case flag
  when -1
    raise TerminfoError, "not boolean capability: #{capname}"
  when 0
    raise TerminfoError, "can't find capability: #{capname}"
  end
  flag
end

.tigetnum(capname) ⇒ Object

Raises:



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# File 'lib/reline/terminfo.rb', line 127

def self.tigetnum(capname)
  raise TerminfoError, "capname is not String: #{capname.inspect}" unless capname.is_a?(String)
  num = @tigetnum.(capname).to_i
  case num
  when -2
    raise TerminfoError, "not numeric capability: #{capname}"
  when -1
    raise TerminfoError, "can't find capability: #{capname}"
  end
  num
end

.tigetstr(capname) ⇒ Object

Raises:



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# File 'lib/reline/terminfo.rb', line 97

def self.tigetstr(capname)
  raise TerminfoError, "capname is not String: #{capname.inspect}" unless capname.is_a?(String)
  capability = @tigetstr.(capname)
  case capability.to_i
  when 0, -1
    raise TerminfoError, "can't find capability: #{capname}"
  end
  StringWithTiparm.new(capability.to_s)
end

.tiparm(str, *args) ⇒ Object 



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# File 'lib/reline/terminfo.rb', line 107

def self.tiparm(str, *args)
  new_args = []
  args.each do |a|
    new_args << Fiddle::TYPE_INT << a
  end
  @tiparm.(str, *new_args).to_s
end