コピペ: get-termsize.rb

形式

Ruby

投稿日時

2017-08-08 21:14

公開期間

無期限

 #!/usr/bin/ruby
 #encoding: ascii-8bit
 
 require 'io/console'
 
 resp = ""
 
 STDIN.raw do |stdin|
   STDERR.print "\e[18t" # query terminal size
 
   resp = ""
   while (c = stdin.getc)
     resp << c.chr
     break unless /[\[\x1b\x9c;0-9]/ =~ c
   end
 end
 
 if /(?:\x9c|\x1b\[)8;(\d+);(\d+)t/ =~ resp # check response of cursor position query
   rows = $1.to_i
   cols = $2.to_i
   puts "COLUMNS=#{cols}"
   puts "ROWS=#{rows}"
 else
   STDERR.puts "Invalid response"
 end