Annotation of gforth/string.fs, revision 1.5
1.1 pazsan 1: \ dynamic string handling 10aug99py
2:
1.3 anton 3: \ Copyright (C) 2000 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
1.4 anton 19: \ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
1.3 anton 20:
1.1 pazsan 21: : delete ( buffer size count -- )
22: over min >r r@ - ( left over ) dup 0>
23: IF 2dup swap dup r@ + -rot swap move THEN + r> bl fill ;
24:
1.5 ! pazsan 25: [IFUNDEF] insert
1.1 pazsan 26: : insert ( string length buffer size -- )
27: rot over min >r r@ - ( left over )
28: over dup r@ + rot move r> move ;
1.5 ! pazsan 29: [THEN]
1.1 pazsan 30:
31: : $padding ( n -- n' )
32: [ 6 cells ] Literal + [ -4 cells ] Literal and ;
33: : $! ( addr1 u addr2 -- )
34: dup @ IF dup @ free throw THEN
35: over $padding allocate throw over ! @
36: over >r rot over cell+ r> move 2dup ! + cell+ bl swap c! ;
37: : $@len ( addr -- u ) @ @ ;
38: : $@ ( addr1 -- addr2 u ) @ dup cell+ swap @ ;
39: : $!len ( u addr -- )
40: over $padding over @ swap resize throw over ! @ ! ;
41: : $del ( addr off u -- ) >r >r dup $@ r> /string r@ delete
42: dup $@len r> - swap $!len ;
43: : $ins ( addr1 u addr2 off -- ) >r
44: 2dup dup $@len rot + swap $!len $@ 1+ r> /string insert ;
45: : $+! ( addr1 u addr2 -- ) dup $@len $ins ;
46: : $off ( addr -- ) dup @ free throw off ;
47:
48: \ dynamic string handling 12dec99py
49:
50: : $split ( addr u char -- addr1 u1 addr2 u2 )
1.2 pazsan 51: >r 2dup r> scan dup >r dup IF 1 /string THEN
52: 2swap r> - 2swap ;
1.1 pazsan 53:
54: : $iter ( .. $addr char xt -- .. ) { char xt }
55: $@ BEGIN dup WHILE char $split >r >r xt execute r> r>
56: REPEAT 2drop ;
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