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Make CRLF handling in accept more robust.

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This commit is contained in:
Brad Nelson
2022-06-07 20:32:01 -07:00
parent 30707ee7d8
commit d97a6915a5
4 changed files with 19 additions and 6 deletions
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14
common/boot.fs
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@ -158,12 +158,16 @@ variable hld
( Input )
: raw.s depth 0 max for aft sp@ r@ cells - @ . then next ;
variable echo -1 echo ! variable arrow -1 arrow !
: ?echo ( n -- ) echo @ if emit else drop then ;
variable echo -1 echo ! variable arrow -1 arrow ! variable wascr
: *emit ( n -- ) dup emit 13 = if cr then ;
: ?echo ( n -- ) echo @ if *emit else drop then ;
: ?arrow. arrow @ if >r >r raw.s r> r> ." --> " then ;
: *key ( -- n )
begin key dup nl = wascr @ 0= and if drop 13 exit then dup until
dup 13 = wascr ! ;
: accept ( a n -- n ) ?arrow. 0 swap begin 2dup < while
key
dup nl = over 13 = or if ?echo drop nip exit then
*key
dup 13 = if ?echo drop nip exit then
dup 8 = over 127 = or if
drop over if rot 1- rot 1- rot 8 ?echo bl ?echo 8 ?echo then
else
@ -172,7 +176,7 @@ variable echo -1 echo ! variable arrow -1 arrow !
then
repeat drop nip
( Eat rest of the line if buffer too small )
begin key dup nl = over 13 = or if ?echo exit else drop then again
begin *key dup 13 = if ?echo exit else drop then again
;
200 constant input-limit
: tib ( -- a ) 'tib @ ;