src/utils/string_utils.c

   1 /*
   2  * string_utils.c
   3  */
   4 #include <stdio.h>
   5
   6 char *substrncpy(char *dest, const char *start, const char *end, size_t n)
   7 {
   8         size_t i;
   9         const char *src;
  10
  11         if ((!dest) || (!start) || (!end) || (n == 0))
  12                 return NULL;
  13
  14         if (start > end)
  15                 return NULL;
  16
  17         src = start;
  18         for (i = 0 ; i < n && src <= end; i++, src++) {
  19                 dest[i] = *src;
  20         }
  21         for ( ; i < n ; i++) {
  22                 dest[i] = '\0';
  23         }
  24
  25         return dest;
  26 }