/* converts timestamps in logfiles to a more human-readable format */
/* usage : cnvlog <logfile> */
#include <stdio.h>
#include <unistd.h> 
#include <sys/types.h>            /* gettimeofday */
#include <sys/time.h>

void main(int argc, char **argv)
{
 struct tm *tmp;
 FILE *fp;
 int column;
 long time;
 char event[20];
 struct timeval tv;
 
 if (argc!=2)
 {
   printf("usage : %s filename\n",argv[0]);
   exit(-1);
 }

 fp = fopen(argv[1],"r");

 if (fp==NULL)
 {
   printf("can't open file\n");
   exit(-1);
 }

 tv.tv_usec=0;

 while(fscanf(fp,"%d%s%ld\n",&column,event,&time) != EOF)
 {
   tv.tv_sec=time;
   tmp=localtime(&tv.tv_sec);

   printf("%d %s %s",column,event,asctime(tmp));
 }

 fclose(fp);
}