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|
# frozen_string_literal: true
require_relative "color/mode"
require_relative "color/support"
require_relative "color/version"
module TTY
# Responsible for checking terminal color support
#
# @api public
module Color
extend self
NoValue = Module.new
@verbose = false
@output = $stderr
attr_accessor :output, :verbose
# Check if terminal supports colors
#
# @return [Boolean]
#
# @api public
def support?
Support.new(ENV, verbose: verbose).support?
end
alias supports? support?
alias color? support?
alias supports_color? support?
# Detect if color support has been disabled with NO_COLOR ENV var.
#
# @return [Boolean]
# true when terminal color support has been disabled, false otherwise
#
# @api public
def disabled?
Support.new(ENV, verbose: verbose).disabled?
end
# Check how many colors this terminal supports
#
# @return [Integer]
#
# @api public
def mode
Mode.new(ENV).mode
end
# Check if output is linked with terminal
#
# @return [Boolean]
#
# @api public
def tty?
output.respond_to?(:tty?) && output.tty?
end
# Check if command can be run
#
# @return [Boolean]
#
# @api public
def command?(cmd)
!!system(cmd, out: ::File::NULL, err: ::File::NULL)
end
# Check if Windowz
#
# @return [Boolean]
#
# @api public
def windows?
::File::ALT_SEPARATOR == "\\"
end
end # Color
end # TTY
|
