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I'm trying to redirect the output of a server command to a file, but I'm
having problems.
I've come up with the following code (this code is within a ConCommand that
I have written):
char cmd[2048];
// clear out any pending commands first
engine->ServerExecute();
// save the old stdout
int oldstdout = dup(1);
// redirect stdout to rcon.txt if writable
FILE *fp = fopen("rcon.txt", "w");
if(fp)
{
dup2(fileno(fp), 1);
}
// prepare the command
Q_snprintf(cmd, sizeof(cmd), "%s\n", engine->Cmd_Args());
// just some tests
puts("Test:");
Msg("Cooltest\n");
// queue the command
engine->ServerCommand(msg);
// actually execute the command
engine->ServerExecute();
// more tests
puts("posttest");
Msg("coolposttest\n");
// restore everything if we messed with anything
if(fp)
{
// flush to make sure text gets written to
file, not console
fflush(stdout);
fclose(fp);
// put stdout back
dup2(oldstdout, 1);
// and close the duplicate
close(oldstdout);
flushall();
}
When this code executes a command on the server (cvarlist for example), no
output is written to the console but there is no relevant output in the
rcon.txt file either. The contents of the rcon.txt file are:
Test:
posttest
The tests using Msg() don't write to the file nor does the server command.
Nothing is written to the console either, so it looks like the output gets
lost somewhere. Why doesn't this work to redirect output of Msg()? I'm
testing this in Windows. I'd be surprised if it didn't work in Linux as well
since Linux seems to be more compliant with these sorts of things.
Does anybody have any ideas or recommendations?
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