• Emil (10/10) Jan 31 2017 is it possible to intercept the STDOUT or STDERR and capture the
• angel (9/19) Feb 01 2017 No.
• Emil (3/15) Feb 02 2017 Thank you.
• sarn (5/15) Feb 02 2017 If you *had* to, you should be able to hack it by reopening the

Emil <emilper gmail.com> writes:

is it possible to intercept the  STDOUT or STDERR and capture the 
output into a variable ?


some pseudocode to explain what I mean

string[] output_buffer;
stdout.capture_to(output_buffer);




stdout.release(output_buffer);

angel <andrey.gelman gmail.com> writes:

On Wednesday, 1 February 2017 at 01:08:19 UTC, Emil wrote:
 is it possible to intercept the  STDOUT or STDERR and capture 
 the output into a variable ?


 some pseudocode to explain what I mean

 string[] output_buffer;
 stdout.capture_to(output_buffer);




 stdout.release(output_buffer);




No.
Please keep in mind, that in Linux, for example, stdout is a file 
...
writeln() interacts with OS API, which, of course, has nothing to 
do with internal data structures of your application.
What you could probably do is replace writeln() with a custom 
logger. In your logger implementation you can add such 
functionality.

Emil <emilper gmail.com> writes:

On Wednesday, 1 February 2017 at 14:38:18 UTC, angel wrote:
 On Wednesday, 1 February 2017 at 01:08:19 UTC, Emil wrote:
 is it possible to intercept the  STDOUT or STDERR and capture 
 the output into a variable ?


.....


 No.
 Please keep in mind, that in Linux, for example, stdout is a 
 file ...
 writeln() interacts with OS API, which, of course, has nothing 
 to do with internal data structures of your application.
 What you could probably do is replace writeln() with a custom 
 logger. In your logger implementation you can add such 
 functionality.

Thank you.

sarn <sarn theartofmachinery.com> writes:

On Wednesday, 1 February 2017 at 01:08:19 UTC, Emil wrote:
 is it possible to intercept the  STDOUT or STDERR and capture 
 the output into a variable ?


 some pseudocode to explain what I mean

 string[] output_buffer;
 stdout.capture_to(output_buffer);




 stdout.release(output_buffer);




If you *had* to, you should be able to hack it by reopening the 
file descriptors for standard output or error (at least on *nix), 
but is there a specific reason you want to do this, or do you 
just want formatted output to a variable?