Fix python3 byte decoding for non-windows platforms

py65/utils/console.py

@@ -24,10 +24,7 @@ if sys.platform[:3] == "win":
         is available.  Does not echo the character.  The stdin argument is
         for function signature compatibility and is ignored.
         """
-        c = msvcrt.getch()
-        if isinstance(c, bytes): # Python 3
-            c = c.decode('latin-1')
-        return c
+        return maybedecode(msvcrt.getch())
 
     def getch_noblock(stdin):
         """ Read one character from the Windows console without blocking.
@@ -142,38 +139,8 @@ else:
             # Quietly ignore termios errors, such as stdin not being a tty.
             pass
 
-    def getch(stdin):
-        """ Read one character from stdin, blocking until one is available.
-        Does not echo the character.
-        """
-        # Try to get a character with a non-blocking read.
+    def _getchnb(stdin):
         char = ''
-        noncanonical_mode(stdin)
-        # If we didn't get a character, ask again.
-        while char == '':
-            try:
-                # On OSX, calling read when no data is available causes the
-                # file handle to never return any future data, so we need to
-                # use select to make sure there is at least one char to read.
-                rd,wr,er = select([stdin], [], [], 0.01)
-                if rd != []:
-                    char = stdin.read(1)
-            except KeyboardInterrupt:
-                # Pass along a CTRL-C interrupt.
-                raise
-            except:
-                pass
-        return char
-
-    def getch_noblock(stdin):
-        """ Read one character from stdin without blocking.  Does not echo the
-        character.  If no character is available, an empty string is returned.
-        """
-        char = ''
-
-        # Using non-blocking read
-        noncanonical_mode(stdin)
-
         try:
             # On OSX, calling read when no data is available causes the
             # file handle to never return any future data, so we need to
@@ -186,6 +153,30 @@ else:
             raise
         except:
             pass
+        return maybedecode(char)
+
+    def getch(stdin):
+        """ Read one character from stdin, blocking until one is available.
+        Does not echo the character.
+        """
+        # Try to get a character with a non-blocking read.
+        noncanonical_mode(stdin)
+        # If we didn't get a character, ask again.
+        while True:
+            char = _getchnb(stdin)
+            if len(char):
+                break
+
+        return char
+
+    def getch_noblock(stdin):
+        """ Read one character from stdin without blocking.  Does not echo the
+        character.  If no character is available, an empty string is returned.
+        """
+        # Using non-blocking read
+        noncanonical_mode(stdin)
+
+        char = _getchnb(stdin)
 
         # Convert linefeeds to carriage returns.
         if len(char) and ord(char) == 10:
@@ -193,6 +184,12 @@ else:
         return char
 
 
+def maybedecode(c):
+    if len(c) and isinstance(c, bytes): # Python 3
+        c = c.decode('latin-1')
+    return c
+
+
 def line_input(prompt='', stdin=sys.stdin, stdout=sys.stdout):
     """ Read a line from stdin, printing each character as it is typed.
     Does not echo a newline at the end.  This allows the calling program