Annotation of gforth/kernel/args.fs, revision 1.5
1.1 anton 1: \ argument expansion
2:
1.4 anton 3: \ Copyright (C) 1995,1996,1997,1998 Free Software Foundation, Inc.
1.1 anton 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
1.5 ! crook 24: \g Return the string for the @var{n}th command-line argument.
1.1 anton 25: cells argv @ + @ cstring>sstring ;
26: : #! ( -- ) \ gforth hash-bang
1.5 ! crook 27: \g An alias for @code{\}
1.1 anton 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
1.5 ! crook 33: \g VARIABLE: A pointer to a vector of pointers to the command-line
1.1 anton 34: \g arguments (including the command-name). Each argument is
35: \g represented as a C-style string.
36: Variable argc ( -- addr ) \ gforth
1.5 ! crook 37: \g VARIABLE: The number of command-line arguments (including the command name).
1.1 anton 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
1.3 pazsan 45: IF 2drop dup >r evaluate
1.1 anton 46: r> >tib +! 2 EXIT THEN
1.3 pazsan 47: 2dup s" -h" compare 0= >r
48: 2dup s" --help" compare 0= r> or
49: IF ." Image Options:" cr
50: ." FILE load FILE (with `require')" cr
51: ." -e STRING, --evaluate STRING interpret STRING (with `EVALUATE')" cr
52: ." Report bugs to <bug-gforth@gnu.ai.mit.edu>" cr
53: bye
54: THEN
1.1 anton 55: ." Unknown option: " type cr 2drop 1 ;
56:
1.2 jwilke 57: : (process-args) ( -- )
1.1 anton 58: true to script?
1.3 pazsan 59: >tib @ >r #tib @ >r >in @ >r
1.1 anton 60: argc @ 1
61: ?DO
62: I arg over c@ [char] - <>
63: IF
1.3 pazsan 64: 2dup dup #tib ! >in ! >tib !
1.1 anton 65: required 1
66: ELSE
67: I 1+ argc @ = IF s" " ELSE I 1+ arg THEN
68: do-option
69: THEN
70: +LOOP
1.3 pazsan 71: r> >in ! r> #tib ! r> >tib !
1.1 anton 72: false to script?
73: ;
74:
1.2 jwilke 75: ' (process-args) IS process-args
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