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# frozen_string_literal: true
class Pry
class Output
# @return [Array<Integer>] default terminal screen size [rows, cols]
DEFAULT_SIZE = [27, 80].freeze
attr_reader :pry_instance
def initialize(pry_instance)
@output = pry_instance.config.output
@color = pry_instance.config.color
end
def puts(*objs)
return print "\n" if objs.empty?
objs.each do |obj|
if (ary = Array.try_convert(obj))
puts(*ary)
else
print "#{obj.to_s.chomp}\n"
end
end
nil
end
def print(*objs)
objs.each do |obj|
@output.print decolorize_maybe(obj.to_s)
end
nil
end
alias << print
alias write print
def tty?
@output.respond_to?(:tty?) && @output.tty?
end
def method_missing(method_name, *args, &block)
if @output.respond_to?(method_name)
@output.__send__(method_name, *args, &block)
else
super
end
end
def respond_to_missing?(method_name, include_private = false)
@output.respond_to?(method_name, include_private)
end
def decolorize_maybe(str)
return str if @color
Pry::Helpers::Text.strip_color(str)
end
# @return [Array<Integer>] a pair of [rows, columns] which gives the size of
# the window. If the window size cannot be determined, the default value.
def size
rows, cols = actual_screen_size
return [rows.to_i, cols.to_i] if rows.to_i != 0 && cols.to_i != 0
DEFAULT_SIZE
end
# Return a screen width or the default if that fails.
def width
size.last
end
# Return a screen height or the default if that fails.
def height
size.first
end
private
def actual_screen_size
# The best way, if possible (requires non-jruby >=1.9 or io-console gem).
io_console_size ||
# Fall back to the old standby, though it might be stale.
env_size ||
# Fall further back, though this one is also out of date without
# something calling Readline.set_screen_size.
readline_size ||
# Windows users can otherwise run ansicon and get a decent answer.
ansicon_env_size
end
def io_console_size
return if Pry::Helpers::Platform.jruby?
begin
require 'io/console'
begin
@output.winsize if tty? && @output.respond_to?(:winsize)
rescue Errno::EOPNOTSUPP # rubocop:disable Lint/HandleExceptions
# Output is probably a socket, which doesn't support #winsize.
end
rescue LoadError # rubocop:disable Lint/HandleExceptions
# They probably don't have the io/console stdlib or the io-console gem.
# We'll keep trying.
end
end
def env_size
size = [Pry::Env['LINES'] || Pry::Env['ROWS'], Pry::Env['COLUMNS']]
size if nonzero_column?(size)
end
def readline_size
return unless defined?(Readline) && Readline.respond_to?(:get_screen_size)
size = Readline.get_screen_size
size if nonzero_column?(size)
rescue Java::JavaLang::NullPointerException
# This rescue won't happen on jrubies later than:
# https://github.com/jruby/jruby/pull/436
nil
end
def ansicon_env_size
return unless Pry::Env['ANSICON'] =~ /\((.*)x(.*)\)/
size = [Regexp.last_match(2), Regexp.last_match(1)]
size if nonzero_column?(size)
end
def nonzero_column?(size)
size[1].to_i > 0
end
end
end
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