#include "units.h"
  #include <inttypes.h>

  #include <limits.h>
  #include <stdlib.h>
  #include <string.h>

  #include <linux/kernel.h>
  #include <linux/time64.h>

  unsigned long parse_tag_value(const char *str, struct parse_tag *tags)
  {
  	struct parse_tag *i = tags;
  
  	while (i->tag) {
  		char *s = strchr(str, i->tag);
  
  		if (s) {
  			unsigned long int value;
  			char *endptr;
  
  			value = strtoul(str, &endptr, 10);
  			if (s != endptr)
  				break;
  
  			if (value > ULONG_MAX / i->mult)
  				break;
  			value *= i->mult;
  			return value;
  		}
  		i++;
  	}
  
  	return (unsigned long) -1;
  }

  unsigned long convert_unit(unsigned long value, char *unit)
  {
  	*unit = ' ';
  
  	if (value > 1000) {
  		value /= 1000;
  		*unit = 'K';
  	}
  
  	if (value > 1000) {
  		value /= 1000;
  		*unit = 'M';
  	}
  
  	if (value > 1000) {
  		value /= 1000;
  		*unit = 'G';
  	}
  
  	return value;
  }
  
  int unit_number__scnprintf(char *buf, size_t size, u64 n)
  {
  	char unit[4] = "BKMG";
  	int i = 0;
  
  	while (((n / 1024) > 1) && (i < 3)) {
  		n /= 1024;
  		i++;
  	}
  
  	return scnprintf(buf, size, "%" PRIu64 "%c", n, unit[i]);
  }