Re: Need a bit of help with reading in characters.

From: Advocated (......_at_......com)
Date: 12/23/03 

Date: Tue, 23 Dec 2003 02:25:30 -0000

"Leo Custodio" <lcustoc611@rogers.com> wrote in message
news:8bGFb.52187$2We1.22327@news04.bloor.is.net.cable.rogers.com...
> I still don't understand what you're trying to do, but let's see if with a
> few more examples we all get it.
> Are you trying to create a program that, when running, would accept
> arguments and would pass them to the shell?
> Because you've mentioned something earlier about your program being able
to
> accept external arguments as well (ie. myprogram -a -x -kill) but it does
> not do that so far.
>
> If your program will take external parameters, you might wanna have a look
> at the main function and change it to something like ~ int main(int argc,
> char * argv[]) ~ and analyze all the parameters from it and pass them back
> to the shell.
>
> If what you're trying to do is simply get parameters at runtime (ie. your
> software prompts for user imput and you will then analyze them), you have
to
> change that scanf input type ~ scanf("%s", string); ~ as i've said before
> and make it accept the whole line. Afterwards, you separate them and check
> any arguments, enabling flags for each parameter and then running your
> program according to the flags.
>
>
>
> Leo
> aliensprite@hotmail.com
>
>
>
> "Advocated" <......@......com> escreveu na mensagem
> news:7RyFb.8385$FN.6250@newsfep4-winn.server.ntli.net...
> > > > Hey all, thanks for taking the time to read this in the first place.
> > > >
> > > > Anyway, ill try and keep it simple. In my program, if i type $ man >
> > something
> > > > it should read in the 2 words, man and something
> > > > it should look up man - find that its a function, run the man >
> > function, and
> > > > then, with that second word "something" it should then execute that
as
> >
> > its
> > > > parameters, if that make sense.
> > >
> > > at first i thought you were confusing command-line parameters (argv[])
> > > with function parameters. after looking at the code, it looks more
> > > like a proto-shell of sorts. if that is the case, then look into
> > > strtok(3) to "tokenize" the contents of string.
> > >
> > > after that, you should declare main() as type int, lose the infinite
> > > loop, return from main(), and ditch the c++ style comments.
> > >
> > > --
> > > donLouis
> >
> > Well i think i get what you mean, this is the original code i was
looking
> > at:
> > http://tinyurl.com/39nfe
> >
> > I think this uses a kind of tokeniser, but the problem is, the input is
> > predifined if that makes any sense, i.e
> > strcpy(InputString," Test\t \t of the parser \t with its
problems....
> > a");
> > is already the user input, instead of getting the actual user input.
> >
> > The idea is, it will actually be a kind of shell, if i can get this
first
> > part to function. Any more ideas?
> >
> > Thanks
> >
> >
>
>

Thanks for all this help guys. Ive made the changes stated
http://tinyurl.com/2hkpx
and also added something to get the commands, this is working ok at the
moment, in the means that, if i type: dir *.exe it will print token 0 is
dir, token 1 is *.exe so i think im kind of getting the idea?

Im having a silly problem with it though, in the LeftTrim function it uses:
while ((*Input == ' ') || (*Input == '\t')) This is supposed to remove all
spaces and tabs from the input, but its only semi working and i cannot see
why. If i type hello<space>world it works fine, if i do
hello<space><space>world etc, it works fine, and both times prints token 0 =
hello token 1 = world.
The problem is with the tabs. If i type: <tab>hello world it prints token 0
= hello token 1 = world. but if i type: hello<tab>world it prints: token 0
= hello world.

Not sure why its not working, but in my previous examples where i wasnt
waiting for user input(using a predefined string: strcpy(InputString,"
Test\t \t of the parser \t with its problems.... a"); ) it worked
perfectly, Can anyone see where im going wrong? Ive tried running in Visual
Studio debugger, but for some reason its not working 100%, i.e i run the
debugger, it gets to say a printf statement and asks me where printf.c is
located :s

Cheers though all!

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