Add echo, noecho, cbreak and nocbreak

To make more like curses for familiarity

1 files changed, 25 insertions, 4 deletions

diff --git a/keyboardpython/__init__.py b/keyboardpython/__init__.py
index c50708a..f97283a 100644
--- a/keyboardpython/__init__.py
+++ b/keyboardpython/__init__.py
@@ -1,22 +1,43 @@
 from key import *
 
+def echo(on=True):
+    import sys,termios
+    fd = sys.stdin.fileno()
+    t = termios.tcgetattr(fd)
+    if on: t[3] = t[3] & termios.ECHO
+    else: t[3] = t[3] & ~termios.ECHO
+    termios.tcsetattr(fd, termios.TCSANOW, t)
+
+def noecho():
+    echo(False)
+
+def cbreak(on=True):
+    import sys,termios
+    fd = sys.stdin.fileno()
+    t = termios.tcgetattr(fd)
+    if on: t[3] = t[3] & ~termios.ICANON
+    else: t[3] = t[3] & termios.ICANON
+    termios.tcsetattr(fd, termios.TCSANOW, t)
+
+def nocbreak():
+    cbreak(False)
+
 def set_to_read_key(fd='default'):
     ''' Set tty so that os.read gets one keypress at a time '''
     import sys,termios
     # VMIN min bytes read before returning from os.read()
-    VMIN = 0
+    VMIN = 0 # 0 for pure timed read
     # VTIME tenths of a second elapses between bytes read
     VTIME = 1
     if fd == 'default': fd = sys.stdin.fileno()
     global before_t
     before_t = termios.tcgetattr(fd)
     t = termios.tcgetattr(fd)
-    # turn echo and needing to press enter off
-    t[3] = t[3] & ~termios.ICANON & ~termios.ECHO
+    noecho()
+    cbreak()
     cc = t[-1]
     cc[termios.VMIN] = VMIN
     cc[termios.VTIME] = VTIME
-    termios.tcsetattr(fd, termios.TCSANOW, t)
 
 def reset_tty(fd='default'):
     ''' set tty to how it was before set_to_read_key '''