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\ argument expansion
\ Copyright (C) 1995-1997 Free Software Foundation, Inc.
\ This file is part of Gforth.
\ Gforth is free software; you can redistribute it and/or
\ modify it under the terms of the GNU General Public License
\ as published by the Free Software Foundation; either version 2
\ of the License, or (at your option) any later version.
\ This program is distributed in the hope that it will be useful,
\ but WITHOUT ANY WARRANTY; without even the implied warranty of
\ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
\ GNU General Public License for more details.
\ You should have received a copy of the GNU General Public License
\ along with this program; if not, write to the Free Software
\ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
: cstring>sstring ( cstring -- addr n ) \ gforth cstring-to-sstring
-1 0 scan 0 swap 1+ /string ;
: arg ( n -- addr count ) \ gforth
cells argv @ + @ cstring>sstring ;
: #! postpone \ ; immediate
Create pathstring 2 cells allot \ string
Create pathdirs 2 cells allot \ dir string array, pointer and count
Variable argv
Variable argc
0 Value script? ( -- flag )
: process-path ( addr1 u1 -- addr2 u2 )
\ addr1 u1 is a path string, addr2 u2 is an array of dir strings
align here >r
BEGIN
over >r 0 scan
over r> tuck - ( rest-str this-str )
dup
IF
2dup 1- chars + c@ [char] / <>
IF
2dup chars + [char] / swap c!
1+
THEN
2,
ELSE
2drop
THEN
dup
WHILE
1 /string
REPEAT
2drop
here r> tuck - 2 cells / ;
: do-option ( addr1 len1 addr2 len2 -- n )
2swap
2dup s" -e" compare 0= >r
2dup s" --evaluate" compare 0= r> or
IF 2drop dup >r ['] evaluate catch
?dup IF dup >r DoError r> negate (bye) THEN
r> >tib +! 2 EXIT THEN
." Unknown option: " type cr 2drop 1 ;
: process-args ( -- )
true to script?
>tib @ >r
argc @ 1
?DO
I arg over c@ [char] - <>
IF
required 1
ELSE
I 1+ argc @ = IF s" " ELSE I 1+ arg THEN
do-option
THEN
+LOOP
r> >tib !
false to script?
;
|
