🚀 go-pugleaf

14 Oct 2004 09:34:00 -0400, Jeff Kish <jeff.kish@mro.com> wrote:

> Hi.
>
> If I wanted to write an app that accepted output from another program,
> say, stdou and was able to read the input stream, how would I go about
> that?
>
>
> For example, say I frequently do this at the command line:
>
> grep -di "<tag" *.xml
>
> and wanted to pipe all the matches to an app that would be able then
> to parse the input, what would be the general approach, and if
> possible the call's I'd need to make to either the VCL or API to have
> this occur?
>
> Thanks
>
> Jeff Kish
>


Simple basic instructions in a console application would do the work.

Upper.c
-------
#include <stdio.h>
#include <string.h>
void main(void)  {
   char LineRead[255];
   while (fgets(LineRead, sizeof(LineRead), stdin))
     fputs(strupr(LineRead), stdout);
}

followed by:   grep -di "<tag" *.xml | Upper.exe

In a non-console application you can use dedicated API among:

GetStdHandle
CreateFile
CreateConsoleScreenBuffer
ReadFile
WriteFile
DuplicateHandle
CloseHandle


JF Jolin
[Montreal, Canada]