Re: redirecting standard I/O of console app from Parameters

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#97

From: Bruce Roberts
Date: Tue, 30 Mar 2004 19:01

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"Hmmm" <forums@mail.bg> wrote in message
news:aaa4810e.0403300938.68846eca@posting.google.com...
> i wrote a console app with delphi 7
> in prompt i coul write this
>
> myapp.exe < data.in > result.out
>
> so where there is readln in the code, this will be read from "data.in"
> file, and where there is writeln, it will be write to "result.out"
> file.
>
> is there way to do this redirection without using prompt (When in
> delphi IDE i press F9, standard input to come from data.in and so on).
> In Run->Parameters... in Parameters text box i type this: < data.in >
> result.out, but it doesnt work

It really depends on how the program is being run, since the runner is the
one that does the mapping. If you are running it from another program you
can use CreateProcess. A goggle search will turn up several examples of i/o
redirection using CreateProcess. As a general solution, you could have the
app parse the command line and do its own redirection.

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From: "Bruce Roberts" <ber@bounceitattcanada.xnet>
Newsgroups: comp.lang.pascal.delphi.misc,borland.public.delphi.ide
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Subject: Re: redirecting standard I/O of console app from Parameters
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