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module ANSI
module Terminal
require "termios" # Unix, first choice.
module_function
#CHARACTER_MODE = "termios" # For Debugging purposes only.
#
# Unix savvy getc(). (First choice.)
#
# *WARNING*: This method requires the "termios" library!
#
def get_character( input = STDIN )
old_settings = Termios.getattr(input)
new_settings = old_settings.dup
new_settings.c_lflag &= ~(Termios::ECHO | Termios::ICANON)
new_settings.c_cc[Termios::VMIN] = 1
begin
Termios.setattr(input, Termios::TCSANOW, new_settings)
input.getc
ensure
Termios.setattr(input, Termios::TCSANOW, old_settings)
end
end
# A Unix savvy method to fetch the console columns, and rows.
def terminal_size
if /solaris/ =~ RUBY_PLATFORM and
`stty` =~ /\brows = (\d+).*\bcolumns = (\d+)/
[$2, $1].map { |c| x.to_i }
else
`stty size`.split.map { |x| x.to_i }.reverse
end
end
# Console screen width (taken from progress bar)
#
# NOTE: Don't know how portable #screen_width is.
# TODO: How to fit in to system?
#
def screen_width(out=STDERR)
default_width = ENV['COLUMNS'] || 76
begin
tiocgwinsz = 0x5413
data = [0, 0, 0, 0].pack("SSSS")
if out.ioctl(tiocgwinsz, data) >= 0 then
rows, cols, xpixels, ypixels = data.unpack("SSSS")
if cols >= 0 then cols else default_width end
else
default_width
end
rescue Exception
default_width
end
end
end
end
Version data entries
12 entries across 12 versions & 1 rubygems