* ext/io/console/lib/console/size.rb (IO#console_size): new

  method.  (EXPERIMENTAL)

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@31628 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 20 insertions, 0 deletions

diff --git a/ext/io/console/lib/console/size.rb b/ext/io/console/lib/console/size.rb
new file mode 100644
index 0000000000..e9d8a1fbb6
--- /dev/null
+++ b/ext/io/console/lib/console/size.rb
@@ -0,0 +1,20 @@
+def IO.default_console_size
+  [
+    ENV["LINES"].to_i.nonzero? || 25,
+    ENV["COLUMNS"].to_i.nonzero? || 80,
+  ]
+end
+
+begin
+  require 'io/console'
+rescue LoadError
+  class IO
+    alias console_size default_console_size
+  end
+else
+  def IO.console_size
+    console.winsize
+  rescue NoMethodError
+    default_console_size
+  end
+end