1 \ *****************************************************************************
2 \ * Copyright (c) 2004, 2008 IBM Corporation
3 \ * All rights reserved.
4 \ * This program and the accompanying materials
5 \ * are made available under the terms of the BSD License
6 \ * which accompanies this distribution, and is available at
7 \ * http://www.opensource.org/licenses/bsd-license.php
10 \ * IBM Corporation - initial implementation
11 \ ****************************************************************************/
14 : input ( dev-str dev-len -- )
17 s" stdin" get-chosen IF
18 decode-int nip nip ?dup IF close-dev THEN
20 \ Now set the new stdin:
21 encode-int s" stdin" set-chosen
25 : output ( dev-str dev-len -- )
28 s" stdout" get-chosen IF
29 decode-int nip nip ?dup IF close-dev THEN
31 \ Now set the new stdout:
32 encode-int s" stdout" set-chosen
36 : io ( dev-str dev-len -- )
41 1 BUFFER: (term-io-char-buf)
43 : term-io-key ( -- char )
44 s" stdin" get-chosen IF
45 decode-int nip nip dup 0= IF 0 EXIT THEN
47 (term-io-char-buf) 1 s" read" r@ $call-method
53 [ ' key behavior compile, ]
59 \ this word will check what the current chosen input device is:
60 \ - if it is a serial device, it will use serial-key? to check for available input
61 \ - if it is a keyboard, it will check if the "key-available?" method is implemented (i.e. for usb-keyboard) and use that
62 \ - if it's an hv console, use hvterm-key?
63 \ otherwise it will always return false
64 : term-io-key? ( -- true|false )
65 s" stdin" get-chosen IF
66 decode-int nip nip dup 0= IF drop 0 EXIT THEN \ return false and exit if no stdin set
67 >r \ store ihandle on return stack
68 s" device_type" r@ ihandle>phandle ( propstr len phandle )
69 get-property ( true | data dlen false )
71 \ device_type not found, return false and exit
74 1 - \ remove 1 from length to ignore null-termination char
75 \ device_type found, check wether it is serial or keyboard
76 2dup s" serial" str= IF
77 2drop serial-key? r> drop EXIT
78 THEN \ call serial-key, cleanup return-stack, exit
79 2dup s" keyboard" str= IF
81 \ keyboard found, check for key-available? method, execute it or return false
82 s" key-available?" r@ ihandle>phandle find-method IF
83 drop s" key-available?" r@ $call-method
87 r> drop EXIT \ cleanup return-stack, exit
89 2drop r> drop false EXIT \ unknown device_type cleanup return-stack, return false
92 \ stdin not set, return false
97 ' term-io-key? to key?