Annotation of gforth/kernel/args.fs, revision 1.2
1.1 anton 1: \ argument expansion
2:
3: \ Copyright (C) 1995-1997 Free Software Foundation, Inc.
4:
5: \ This file is part of Gforth.
6:
7: \ Gforth is free software; you can redistribute it and/or
8: \ modify it under the terms of the GNU General Public License
9: \ as published by the Free Software Foundation; either version 2
10: \ of the License, or (at your option) any later version.
11:
12: \ This program is distributed in the hope that it will be useful,
13: \ but WITHOUT ANY WARRANTY; without even the implied warranty of
14: \ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15: \ GNU General Public License for more details.
16:
17: \ You should have received a copy of the GNU General Public License
18: \ along with this program; if not, write to the Free Software
19: \ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20:
21: : cstring>sstring ( cstring -- addr n ) \ gforth cstring-to-sstring
22: -1 0 scan 0 swap 1+ /string ;
23: : arg ( n -- addr count ) \ gforth
24: \g returns the string for the @var{n}th command-line argument.
25: cells argv @ + @ cstring>sstring ;
26: : #! ( -- ) \ gforth hash-bang
27: \g an alias for @code{\}
28: postpone \ ; immediate
29:
30: Create pathstring 2 cells allot \ string
31: Create pathdirs 2 cells allot \ dir string array, pointer and count
32: Variable argv ( -- addr ) \ gforth
33: \g contains a pointer to a vector of pointers to the command-line
34: \g arguments (including the command-name). Each argument is
35: \g represented as a C-style string.
36: Variable argc ( -- addr ) \ gforth
37: \g contains the number of command-line arguments (including the command name)
38:
39: 0 Value script? ( -- flag )
40:
41: : do-option ( addr1 len1 addr2 len2 -- n )
42: 2swap
43: 2dup s" -e" compare 0= >r
44: 2dup s" --evaluate" compare 0= r> or
45: IF 2drop dup >r ['] evaluate catch
46: ?dup IF dup >r DoError r> negate (bye) THEN
47: r> >tib +! 2 EXIT THEN
48: ." Unknown option: " type cr 2drop 1 ;
49:
1.2 ! jwilke 50: : (process-args) ( -- )
1.1 anton 51: true to script?
52: >tib @ >r
53: argc @ 1
54: ?DO
55: I arg over c@ [char] - <>
56: IF
57: required 1
58: ELSE
59: I 1+ argc @ = IF s" " ELSE I 1+ arg THEN
60: do-option
61: THEN
62: +LOOP
63: r> >tib !
64: false to script?
65: ;
66:
1.2 ! jwilke 67: ' (process-args) IS process-args
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