//------------------------------------------------------------------
// This is a backup utility that will copy a file to the backup dir
// and timestamp it.
// It was designed to exist in each subdirectory of NACHOS and to
// copy files to a directory entitled: backup
// This way, any backups will be outside (one level down) from the
// scope of the submit program.
//
// Theoretical usage: <from inside userprog>
// 1) setup the directory backup: mkdir backup
// 2) run "save" from this userprog directory (have a copy in it)
//
// Sample:
//	save addrspace.cc
//	save addrspace.h	now both files are in <dir>/backup
//				with a timestamp at the end
//
// To compile: gcc save.cc -o save
//
// Designed by Will Page and Ryan Cunningham for CSCI402 (c) 2003
// University of Southern California
// Updated: 25.Feb.03
//------------------------------------------------------------------

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

int main(int argc, char **argv)
{
 char comline[200]; 
 char stamp[11];
 time_t clk = time(NULL);
 tm *curtime = localtime( &clk );

 // prepare arg* for looking at first passed param
 argc--;
 argv++;
	
 printf("File to backup: %s\n",*argv);

 strcpy(comline, "cp ");	
 strcat(comline, *argv);
 strcat(comline, " backup/");
 strcat(comline, *argv);
 strcat(comline, ".");

 //int   tm_min;    /* minutes after the hour - [0, 59] */
 //int   tm_hour;   /* hour since midnight - [0, 23] */
 //int   tm_mday;   /* day of the month - [1, 31] */
 //int   tm_mon;	   /* mons since jan - [0-11] */		
 printf("Seed: %ld\n",time(NULL));
 printf("Mon: %d Day: %d Hour: %d Min: %d\n",curtime->tm_mon,curtime->tm_mday,curtime->tm_hour,curtime->tm_min);
 stamp[0] = (curtime->tm_mon + 1) / 10 + '0';
 stamp[1] = (curtime->tm_mon + 1) % 10 + '0';
 stamp[2] = curtime->tm_mday / 10 + '0';
 stamp[3] = curtime->tm_mday % 10 + '0';
 stamp[4] = '-';
 stamp[5] = curtime->tm_hour / 10 + '0';
 stamp[6] = curtime->tm_hour % 10 + '0';
 stamp[7] = ':';
 stamp[8] = curtime->tm_min / 10 + '0';
 stamp[9] = curtime->tm_min % 10 + '0';
 stamp[10] = '\0';
 printf("Stamp: %s\n", stamp);

 strcat(comline, stamp);

 printf("%s -> %s\n",*argv,comline);

 system(comline);
	
 printf("%c",7); //ding that we are done.
 return 0;
}