redirection operator compatible console application

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muquaddim@gmail.com - 05 Apr 2008 16:53 GMT

Hi,
I have a program prog.exe. which takes IP as input its owner
information as output.
if input.txt contains,
xx.xx.xx.xx
yy.yy.yy.yy
zz.zz.zz.zz

now see how it works.

c:\> prog.exe xx.xx.xx.xx yy.yy.yy.yy > output.txt

it generates output.txt with contact info for each ip.

if I don't pass any command line argument it takes input from stdin.
c:\> prog.exe
xx.xx.xx.xx // my input
xx@abc.com // contact info
yy.yy.yy.yy // my input
yy@efg.net // contact info

to break the program I have to press Ctrl+C

Now if I use input redirection operator
c:\> prog.exe < input.txt
xx@abc.com
yy@efg.net
zz@hij.org

In this point my program waits for standard input too.
I want my program should process all the input and output the data
then exit. no wait.

For this problem I can not run the following command,

C:\> prog.exe < input.txt > output.txt

I never know whether the program has ended.

The simple Code can be found in http://nopaste.info/31b391011b.html

Please give me a solution.

Thanks in Advance.

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Lasse Vågsæther Karlsen - 05 Apr 2008 17:08 GMT

> Hi,
> I have a program prog.exe. which takes IP as input its owner
> information as output.
> if input.txt contains,

<snip>

> Now if I use input redirection operator
> c:\> prog.exe < input.txt
[quoted text clipped - 5 lines]
> I want my program should process all the input and output the data
> then exit. no wait.

The way your program is built, it should exit out of the loop when it
hits the end of the data.

The correct way to end the program is to hit Ctrl+Z when you're giving
it text from the console.

When you give it text from a file, or from a different program, it
should terminate by its own.

However, you haven't shown what "startProcess" does, so there could be
other things that holds your program up.

Try the following simple program and see if it behaves as you expect:

using System;

namespace ConsoleApplication1
{
class Program
{
static void Main(String[] args)
{
while (true)
{
String s = Console.In.ReadLine();
if (s == null)
break;
Console.Out.WriteLine(s);
}
}
}
}

Signature

Lasse Vågsæther Karlsen
mailto:lasse@vkarlsen.no
http://presentationmode.blogspot.com/
PGP KeyID: 0xBCDEA2E3

Reply to this Message

muquaddim@gmail.com - 05 Apr 2008 18:36 GMT

> muquad...@gmail.com wrote:
> > Hi,
[quoted text clipped - 50 lines]
> mailto:la...@vkarlsen.nohttp://presentationmode.blogspot.com/
> PGP KeyID: 0xBCDEA2E3

Thanks Lasse.
I didnt see your solution as I didn't refresh the page.
Whatever thanks again

Reply to this Message

muquaddim@gmail.com - 05 Apr 2008 17:32 GMT

On Apr 5, 10:53 am, "muquad...@gmail.com" <muquad...@gmail.com> wrote:

> Hi,
> I have a program prog.exe. which takes IP as input its owner
[quoted text clipped - 40 lines]
>
> Thanks in Advance.

its solved

while((ip=Console.ReadLine())!=null){
process(ip);
}

so easy

Reply to this Message

redirection operator compatible console application

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