Sha256: d9fc22661e888191df3a6bec8dc3c103dcac37bff37b971b28aa8030e08bec81
Contents?: true
Size: 1.52 KB
Versions: 8
Compression:
Stored size: 1.52 KB
Contents
class Pry::TerminalInfo
# Return a pair of [rows, columns] which gives the size of the window.
#
# If the window size cannot be determined, return nil.
def self.screen_size
rows, cols = actual_screen_size
if rows && cols
[rows.to_i, cols.to_i]
else
nil
end
end
# Return a screen width or a default if it fails.
def self.width! default = 80
(screen_size || [nil, default])[1]
end
def self.actual_screen_size
[
# Some readlines also provides get_screen_size.
# Readline comes before IO#winsize because jruby sometimes defaults winsize to [25, 80]
readline_screen_size,
# io/console adds a winsize method to IO streams.
# rescue nil for jruby 1.7.0 [jruby/jruby#354]
$stdout.tty? && $stdout.respond_to?(:winsize) && ($stdout.winsize rescue nil),
# Otherwise try to use the environment (this may be out of date due
# to window resizing, but it's better than nothing).
[ENV["LINES"] || ENV["ROWS"], ENV["COLUMNS"]],
# If the user is running within ansicon, then use the screen size
# that it reports (same caveats apply as with ROWS and COLUMNS)
ENV['ANSICON'] =~ /\((.*)x(.*)\)/ && [$2, $1],
].detect do |(_, cols)|
cols.to_i > 0
end
end
def self.readline_screen_size
Readline.get_screen_size if Readline.respond_to?(:get_screen_size)
rescue Java::JavaLang::NullPointerException
# This rescue won't happen on jrubies later than:
# https://github.com/jruby/jruby/pull/436
nil
end
end
Version data entries
8 entries across 8 versions & 1 rubygems