1
0
mirror of https://github.com/hsoft/collapseos.git synced 2024-12-25 16:38:06 +11:00
collapseos/blk/366
Virgil Dupras 2d17b4e8ec Make string length-prefixed instead of null-terminated
I'm not sure why I chose null-terminated initially. Probably because
the z80asm version had null-terminated strings.

Length-prefixes strings are the traditional form of strings in Forth
and it's a bit easier to work with them with traditional forth words
when they're under this form.
2020-05-25 20:34:52 -04:00

14 lines
356 B
Plaintext

( Read word from C<, copy to WORDBUF, null-terminate, and
return WORDBUF. )
: _wb 0x0e RAM+ ;
: _eot 0x0401 _wb ! _wb ;
: WORD
_wb 1+ TOWORD ( a c )
DUP EOT? IF 2DROP _eot EXIT THEN
BEGIN
OVER C! 1+ C< ( a c )
OVER 0x2e RAM+ = OVER WS? OR
UNTIL ( a c )
SWAP _wb - 1- ( ws len ) _wb C!
EOT? IF _eot ELSE _wb THEN ;