Simple Question about timestamps

[willz99ta]

Howdy,

What is the easiest way to put a time stamp onto a string?

Thanks,
Willz99ta

 

[columb]

I'm not sure it's a simple question. Can you be more specific about exactly what how you want to timestamp a string?

Columb Healy

 

[willz99ta]

I have a string I am writing to a text file in UNIX. I would like it to have a timestamp at the end of the string.


<code>
fputs("Error: 'ISA' was not at the beginning of the data\n",LogPtr);
</code>

 

[DaveSinkula]

I know you said the end of the string, but if you want it to be [tt]fputs[/tt]-like with your string containing the newline at the end, it might be easier to do at the beginning. This is a modified version of something I had lying around.

#include <stdio.h>
#include <stdlib.h>
#include <time.h>

int foo(const char *msg, FILE *file)
{
   static const char format[] = "<%x %X> ";
   time_t datetime;
   struct tm *local;
   char buffer [ 80 ];
   /*
    * Get the current date/time.
    */
   if ( time ( &datetime ) == (time_t)(-1) )
   {
      fputs ( "calendar time is not available\n", stderr );
      return 0;
   }
   /*
    * Convert to broken-down time.
    */
   local = localtime ( &datetime );
   if ( !local )
   {
      fputs ( "cannot convert to local time\n", stderr );
      return 0;
   }
   /*
    * Write the string with the requested format.
    */
   if ( !strftime ( buffer, sizeof buffer, format, local ) )
   {
      fputs ( "could not write format string\n", stderr );
      return 0;
   }
   /*
    * Display the results.
    */
   fputs ( buffer, file );
   fputs ( msg, file );
   fflush ( file );
   return 1;
}

int main(void)
{
   const char errmsg[] = "Error: 'ISA' was not at the beginning of the data\n";
   fputs ( errmsg, stdout );
   foo   ( errmsg, stdout );
   return 0;
}

/* my output
Error: 'ISA' was not at the beginning of the data
<02/25/05 11:47:27> Error: 'ISA' was not at the beginning of the data
*/

The basic ingredients are there.

 

[willz99ta]

Thanks Sir this works perfectly

Give this man some points Admin!

Willz99ta

 

[oppcos]

Give this man some points Admin!

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