How can I write a program supports pipe in command line

[sinbao]

As we know, the following command will print all the .txt files in current directory.

echo /b | findstr "\.txt$"

I want write a program called "my_findstr.exe" just do the same thing as above using command:

echo /b | my_findstr "\.txt$"

Is it possible?

[sinbao]

Sorry, I made a mistake where "echo /b" should be "dir /b" :(

[kenobewan]

Which language are you working with? More info please. Thanks.

[sinbao]

Which language are you working with? More info please. Thanks.

C# for example, I will write code like this:

namespace my_findstr
{
    class Program
    {
        static void Main(string[] args)
        {
            if(args.Length > 0)
            {
                string matchStr = args[0];
                string input = "here is the input string, but where can I get it from the pipe operation?";
                Match m = Regex.Match(input, matchStr);
                if(m.Success)
                {
                    Console.WriteLine(input);
                }
            }
        }
    }

[Plater]

Pipe redirection is not related to program specifically.
All pipe "|" (and also "<" ">") do is change the streams of StandardInput and StandardOutput.
If your program uses Console.Read()/Write() then the pipe and redirections will have an effect on your program.

So doing this:

dir/s > myprog.exe
 

Would fill up the StandardIn stream of you program with the output of "dir/s"
(Use Console.ReadLine() to get it line by line)

[sinbao]

Pipe redirection is not related to program specifically.
All pipe "|" (and also "<" ">") do is change the streams of StandardInput and StandardOutput.
If your program uses Console.Read()/Write() then the pipe and redirections will have an effect on your program.

So doing this:

dir/s > myprog.exe
 

Would fill up the StandardIn stream of you program with the output of "dir/s"
(Use Console.ReadLine() to get it line by line)

thanks, that's what I want!