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: cells argv @ + @ cstring>sstring ;
25: : #! postpone \ ; immediate
26:
27: Create pathstring 2 cells allot \ string
28: Create pathdirs 2 cells allot \ dir string array, pointer and count
29: Variable argv
30: Variable argc
31:
32: 0 Value script? ( -- flag )
33:
34: : process-path ( addr1 u1 -- addr2 u2 )
35: \ addr1 u1 is a path string, addr2 u2 is an array of dir strings
36: align here >r
37: BEGIN
38: over >r 0 scan
39: over r> tuck - ( rest-str this-str )
40: dup
41: IF
42: 2dup 1- chars + c@ [char] / <>
43: IF
44: 2dup chars + [char] / swap c!
45: 1+
46: THEN
47: 2,
48: ELSE
49: 2drop
50: THEN
51: dup
52: WHILE
53: 1 /string
54: REPEAT
55: 2drop
56: here r> tuck - 2 cells / ;
57:
58: : do-option ( addr1 len1 addr2 len2 -- n )
59: 2swap
60: 2dup s" -e" compare 0= >r
61: 2dup s" --evaluate" compare 0= r> or
62: IF 2drop dup >r ['] evaluate catch
63: ?dup IF dup >r DoError r> negate (bye) THEN
64: r> >tib +! 2 EXIT THEN
65: ." Unknown option: " type cr 2drop 1 ;
66:
67: : process-args ( -- )
68: true to script?
69: >tib @ >r
70: argc @ 1
71: ?DO
72: I arg over c@ [char] - <>
73: IF
74: required 1
75: ELSE
76: I 1+ argc @ = IF s" " ELSE I 1+ arg THEN
77: do-option
78: THEN
79: +LOOP
80: r> >tib !
81: false to script?
82: ;
83:
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