printf to char string...

[rtnMichael]

hey guys,
I have a printf statement that I want to transfer to a char string, so I can mail it out to the admin if there's a problem. How do I do the copy to the string?

Thanks
M

 

[newmangj]

You haven't supplied much information but you could use sprintf() instead of printf(), this returns a string variable. Alternatively you could use fprintf to put the output into a file which could be used as an attachment. If you give a bit more information about how you currently use the printf I migt be able to elaborate.

Cheers - Gavin

 

[rtnMichael]

ok, here's what I'm doing:

// call to subroutine //
LogIt(2,NOFLAGIT,"Exiting Program"
MailIt(mail_text);


// sub //
static int LogIt(level, flagit, f, p1,p2,p3,p4,p5,p6,p7,p8,p9)
char *f;
{
int printit;

if(log_level == 0)
printit = 0;
else if( (log_level < 0) && abs(log_level) == level)
printit = 1;
else if(level <= log_level)
printit = 1;
else printit = 0;

if(printit)
{
if(printf(&quot;%c%s - &quot;,flagit? '+':' ',fmt_time()) == -1)
goto err;

if(printf(f,p1,p2,p3,p4,p5,p6,p7,p8,p9) == -1 ||
putchar('\n') == EOF || fflush(stdout) == EOF)
{
err: (void) fprintf(stderr,&quot;%s: error %d - %s.\n&quot;,
process_name,errno, strerror(errno));

(void) fprintf(stderr,&quot;%s: Can't produce log messages.\n&quot;,
process_name);
(void) fprintf(stderr,&quot;%s: Terminating.&quot;, process_name);
exit(2);
}
}

return(0);
}

************************************

I need to get the printf to copy over to a string var so I can do this function:

static int MailIt(str)
char *str;
{
FILE *pipe;

if( pipe = popen(&quot;/usr/lib/sendmail -fmds1 mbarr@ray.com&quot;,&quot;w&quot)
{
fputs(str,pipe);
(void) pclose(pipe);
}
}

 

[rtnMichael]

also, the printf does go to the screen, too. I need it to run a log, plus if something goes wrong, send the last couple (if possible) LogIt calls in the email.

 

[newmangj]

well where you have printf(&quot;%s %d&quot;,var, var); you could replace this with sprintf(target,&quot;%s %d&quot;,var, var) and the formatted string ends up in target.

 

[rtnMichael]

what about this one:

if(printf(f,p1,p2,p3,p4,p5,p6,p7,p8,p9) == -1 || putchar('\n') == EOF || fflush(stdout) == EOF)


How would I do that?