Re: stdout redirect

[Rikki Cattermole via Digitalmars-d-learn]

On 13/04/2015 1:12 a.m., FreeSlave wrote:

On Sunday, 12 April 2015 at 04:39:06 UTC, Philip Stuckey wrote:

why not:
import std.stdio;
stdout = File(args[4], w+);
stderr = File(args[4], w+);


It just replaces the object, not redirects output. E.g. if you use
printf somewhere it will use stdout, not file.


You will need to use writefln instead of printf. As printf uses the 
processes stdout. Changing this would be tricky and OS based.

Re: stdout redirect

[FreeSlave via Digitalmars-d-learn]

On Sunday, 12 April 2015 at 04:39:06 UTC, Philip Stuckey wrote:

why not:
import std.stdio;
stdout = File(args[4], w+);
stderr = File(args[4], w+);


It just replaces the object, not redirects output. E.g. if you 
use printf somewhere it will use stdout, not file.

Re: stdout redirect

[Philip Stuckey via Digitalmars-d-learn]

On Thursday, 12 April 2012 at 08:11:58 UTC, Andrea Fontana wrote:

On Wednesday, 11 April 2012 at 15:25:56 UTC, Stefan wrote:
On Wednesday, 11 April 2012 at 13:00:45 UTC, Andrea Fontana 
wrote:
On Wednesday, 11 April 2012 at 12:46:30 UTC, Andrea Fontana 
wrote:
How can I redirect stdout / stderr to file (from D not 
shell)?


Self-reply:

It works using std.c way:

import std.cstream;
std.c.stdio.freopen(args[4].ptr, w+, dout.file);
std.c.stdio.freopen(args[4].ptr, w+, derr.file);


Careful: D strings are not zero-terminated. 
args[4].toStringz() is the safer choice.


Cheers,
Stefan


Good point Stefan!


why not:
import std.stdio;
stdout = File(args[4], w+);
stderr = File(args[4], w+);

Re: stdout redirect

[Andrea Fontana]

On Wednesday, 11 April 2012 at 15:25:56 UTC, Stefan wrote:
On Wednesday, 11 April 2012 at 13:00:45 UTC, Andrea Fontana 
wrote:
On Wednesday, 11 April 2012 at 12:46:30 UTC, Andrea Fontana 
wrote:

How can I redirect stdout / stderr to file (from D not shell)?


Self-reply:

It works using std.c way:

import std.cstream;
std.c.stdio.freopen(args[4].ptr, w+, dout.file);
std.c.stdio.freopen(args[4].ptr, w+, derr.file);


Careful: D strings are not zero-terminated. args[4].toStringz() 
is the safer choice.


Cheers,
Stefan


Good point Stefan!

stdout redirect

[Andrea Fontana]

How can I redirect stdout / stderr to file (from D not shell)?

Re: stdout redirect

[Andrea Fontana]

On Wednesday, 11 April 2012 at 12:46:30 UTC, Andrea Fontana wrote:

How can I redirect stdout / stderr to file (from D not shell)?


Self-reply:

It works using std.c way:

import std.cstream;
std.c.stdio.freopen(args[4].ptr, w+, dout.file);
std.c.stdio.freopen(args[4].ptr, w+, derr.file);

Re: stdout redirect

[Stefan]

On Wednesday, 11 April 2012 at 13:00:45 UTC, Andrea Fontana wrote:
On Wednesday, 11 April 2012 at 12:46:30 UTC, Andrea Fontana 
wrote:

How can I redirect stdout / stderr to file (from D not shell)?


Self-reply:

It works using std.c way:

import std.cstream;
std.c.stdio.freopen(args[4].ptr, w+, dout.file);
std.c.stdio.freopen(args[4].ptr, w+, derr.file);


Careful: D strings are not zero-terminated. args[4].toStringz() 
is the safer choice.


Cheers,
Stefan