1 files changed, 34 insertions, 0 deletions
diff --git a/sample/cbreak.rb b/sample/cbreak.rb
new file mode 100644
index 0000000000..4b4cb1d3e6
--- /dev/null
+++ b/sample/cbreak.rb
@@ -0,0 +1,34 @@
+%CBREAK = 0x00000002
+%ECHO = 0x00000008
+%TIOCGETP = 0x40067408
+%TIOCSETP = 0x80067409
+
+def cbreak ()
+  set_cbreak(%TRUE)
+end
+
+def cooked ()
+  set_cbreak(%FALSE)
+end
+
+def set_cbreak (on)
+  tty = "\0" * 256
+  $stdin.ioctl(%TIOCGETP, tty)
+  ttys = tty.unpack("C4 S")
+  if on
+    ttys[4] |= %CBREAK
+    ttys[4] &= ~%ECHO
+  else
+    ttys[4] &= ~%CBREAK
+    ttys[4] |= %ECHO
+  end
+  tty = ttys.pack("C4 S")
+  $stdin.ioctl(%TIOCSETP, tty)
+end
+cbreak();
+
+print("this is echo line: ");
+readline().print
+cooked();
+print("this is non echo line: ");
+readline().print