\ argument expansion
\ Copyright (C) 1995,1996,1997,1998,2000 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., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
: cstring>sstring ( cstring -- addr n ) \ gforth cstring-to-sstring
-1 0 scan 0 swap 1+ /string ;
: arg ( n -- addr count ) \ gforth
\g Return the string for the @i{n}th command-line argument.
cells argv @ + @ cstring>sstring ;
: #! ( -- ) \ gforth hash-bang
\g An alias for @code{\}
postpone \ ; immediate
Create pathstring 2 cells allot \ string
Create pathdirs 2 cells allot \ dir string array, pointer and count
Variable argv ( -- addr ) \ gforth
\g @code{Variable} -- a pointer to a vector of pointers to the command-line
\g arguments (including the command-name). Each argument is
\g represented as a C-style string.
Variable argc ( -- addr ) \ gforth
\g @code{Variable} -- the number of command-line arguments (including the command name).
0 Value script? ( -- flag )
: do-option ( addr1 len1 addr2 len2 -- n )
2swap
2dup s" -e" str= >r
2dup s" --evaluate" str= r> or
IF 2drop ( dup >r ) evaluate
( r> >tib +! ) 2 EXIT THEN
2dup s" -h" str= >r
2dup s" --help" str= r> or
IF ." Image Options:" cr
." FILE load FILE (with `require')" cr
." -e STRING, --evaluate STRING interpret STRING (with `EVALUATE')" cr
." Report bugs on <https://savannah.gnu.org/bugs/?func=addbug&group=gforth>" cr
bye
THEN
." Unknown option: " type cr 2drop 1 ;
: (process-args) ( -- )
true to script?
\ >tib @ >r #tib @ >r >in @ >r
argc @ 1
?DO
I arg over c@ [char] - <>
IF
\ 2dup dup #tib ! >in ! >tib !
required 1
ELSE
I 1+ argc @ = IF s" " ELSE I 1+ arg THEN
do-option
THEN
+LOOP
\ r> >in ! r> #tib ! r> >tib !
false to script?
;
: os-boot ( path n **argv argc -- )
stdout TO outfile-id
stdin TO infile-id
argc ! argv ! pathstring 2! ;
' (process-args) IS process-args
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