Added getch() for blocking character input.

src/py65/utils/console.py

@@ -3,11 +3,17 @@ import sys
 if sys.platform[:3] == "win":
     import msvcrt
 
+    def getch(stdin):
+      """ Read one character from the Windows console, blocking until one
+      is available.  Does not echo the character.  The stdin argument is 
+      for function signature compatibility and is ignored.
+      """
+      return msvcrt.getch()
+
     def getch_noblock(stdin):
-        """ Performs a nonblocking read of one character from the Windows
-        console and returns it.  The stdin argument is for function 
-        signature compatibility and is ignored.  If no character is 
-        available, an empty string is returned.
+        """ Read one character from the Windows console without blocking.
+        Does not echo the character.  If no character is available, an
+        emptry string is returned.
         """
         if msvcrt.kbhit():
             return msvcrt.getch()
@@ -19,10 +25,24 @@ else:
     import termios
     import fcntl
 
+    def getch(stdin):
+      """ Read one character from stdin, blocking until one is available.
+      Does not echo the character. 
+      """
+      fd = stdin.fileno()
+      oldattr = termios.tcgetattr(fd)
+      newattr = oldattr[:]
+      newattr[3] &= ~termios.ICANON & ~termios.ECHO
+      try:
+          termios.tcsetattr(fd, termios.TCSANOW, newattr)
+          char = stdin.read(1)
+      finally:
+          termios.tcsetattr(fd, termios.TCSAFLUSH, oldattr)
+      return char
+
     def getch_noblock(stdin):
-        """ Performs a nonblocking read of one character from stdin  
-        returns it.  If no character is available, an empty string 
-        is returned.
+        """ Read one character from stdin without blocking.  Does not echo the 
+        character.  If no character is available, an empty string is returned.
         """
     
         fd = stdin.fileno()