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(Comp.sys.handhelds)
Item: 3694 by Simone.Rapisarda at wolf.sublink.org
Author: [Simone Rapisarda]
Subj: Re: CUT Program [see CUT on this disk. -jkh]
Date: Tue Jul 16 1991
Some time ago I wrote a similar program, I called it STRIP.
I never posted it because I thought it was not so useful (and I
didn't like it very much) but maybe I was wrong so here it is.
I'm posting it because I think that it's more complete then CUT,
it cuts off more things, it works also on lists and doesn't need the
HACKIT library.
All the operations are stack based so I think it's also faster.
You can also run STRIP on programs containing 'Externals' without any
problem. In fact before exploding a program it checks if it's a 'real'
program or just an internal routine.
I suggest you to use STRIP after PACK. [PACK is on Goodies Disk #2. -jkh-]
STRIP is a recursive program so don't change its name.
It removes from PROGRAMS and LISTS the following things:
- The instructions IF and UNTIL
- The user program delimiters ( \<< and \>> ) and if the program contains
only one object it cuts off all program delimiters.
- All the \>> (the two types) and the END (the ones of the IF THEN [ ELSE ]
END construct) that are at the end of the programs.
I have tried STRIP with a lot of programs and everything worked fine
but I guarantee nothing so always backup your program before using
STRIP and test the STRIPped version before normal use.
Simple Example:
before after
15 \<<
14 { \<< DUP \>> }
13 (2349C: XLIB 1792 15)
12 \<< SWAP \>>
11 \->
10 'a' 10 { DUP } ("47A2078BF1B2130")
9 \<< 9 (2349C: XLIB 1792 15)
8 IF 8 SWAP (type 19)
7 THEN 7 \->
6 (null program) 6 'a'
5 ELSE 5 \<<
4 (null program) 4 THEN
3 END 3 (null program)
2 \>> 2 ELSE
1 \>> 1 (null program)
I hope everything is clear.
RAP
----------
Resp: 1 of 1 by bson at rice-chex.ai.mit.edu
Author: [Jan Brittenson]
Date: Tue Jul 16 1991
In a posting of [14 Jul 91 01:59:48 GMT]
Simone.Rapisarda@wolf.sublink.org (Simone Rapisarda) writes:
> STRIP is a recursive program so don't change its name.
> [Removes:]
>
> - The user program delimiters ( \<< and \>> ) and if the program contains
> only one object it cuts off all program delimiters.
This is potentially dangerous. The sequence:
<< X >> 'Y' STO
Is quite different from the sequence:
X 'Y' STO
-- Jan Brittenson
bson@ai.mit.edu